Importance of Sales Promotion Essay

Sales promotion is one of the seven aspects of the promotional mix, which are advertising personal selling, direct marketing publicity/ public relations, corporate image and exhibitions. Sales promotions are short-term incentives that are done to encourage the purchase or sale of a product or service [P.DALOK 200]. Sales promotion can be used to inform, persuade, and remind target customers about the business and its market mix. Some common types of sale promotion include: Samples, Coupons, Sweepstakes, Contest, In-store display, Tradeshows, Price off deals, Premium and rebates. There are many reasons why companies opt for sales promotions other than advertising. Some of the reasons include increasing competition and products becoming more standardized, build brand awareness, create interest, provide information, stimulate demand and also reinforce the brand. In this essay I have briefly described sales promotion, and comprehensively discussed the reasons for sales promotion. Definit ion of sales promotion Sales promotions are short-term incentives to encourage the purchase or sale of a product or service. C. Mitchell 1999 defines sales promotion as a process of persuading a potential customer to buy the product And it includes several communications activities that attempt to provide added value or incentives to consumers, wholesalers, retailers, or other organizational customers to stimulate immediate sales. These efforts can attempt to stimulate product interest, trial, or purchase. Below are reasons for sales promotion. Reasons for sales promotion 1. Increasing Competition The air of change is gaining momentum after the introduction of economic liberalization. Due to increase in competition, companies are finding it increasingly difficult to compete on quality. They are therefore resorting to more innovative methods of sales promotion (Du Toit and Erasmes 2008:347). 2. Customers Have Become More Price Sensitive This increased price sensitivity is a direct result of existing inflation. Economic recession is likely to fuel this trend further, as consumers and dealers become more sensitive towards prices. If the customers get branded jeans at half the actual price, then they are definitely going to make huge purchases of Spykar Jeans because they want value for their money, as they are price sensitive. 3. Sales Promotions Generally Create an Immediate Positive Impact on Sales Advertising, personal selling and other methods of promotion produce slower sales response compared to sales promotion. Sales promotions are mostly for short duration, for a specified period, leading to a sense of urgency in consumers to buy now. This creates an immediate positive impact on sales. 4. Products have become more standardized In many product categories, there is a proliferation of brands; many of them are line extensions and me-too brands. Most brands are being perceived by consumers to be more or less similar within a given price range because of the inability of manufacturers to develop truly differentiated products. Under these circumstances, advertising messages are unable to strongly influence the consumers’ perceptions and create brand franchise. As a result of these perceptions of similarity among brands, marketers have no way but to compete on the basis of extra benefit offered through sales promotion. Competing companies struggle to capture market share by using every tool likely to bring sales success. There are many unbranded jeans sold at shopping malls and places like Mr Price, bandra which are bought at half the price of actual branded jeans. People who are money conscious buy such jeans. Therefore, Spykar Jeans comes up with such discounts, which helps them in increasing their sales and also in stock clearance. 5. Consumer Acceptance As competition intensifies and promotions proliferate, consumers have learnt to earn the rewards of being smart shoppers. Over a period of time, they have also learnt that brands on promotion are not necessarily of lower quality. 6. Advertising Has Become More Expensive And Less Effective All the advertising media have become quite expensive. Audio-visual medium, which is considered as the most effective for short-duration ads, may cost in excess of K5000 for a 10 second exposure during prime time (Kambwir 2013). In many cases, consumers have reached a point of boredom due to excessive advertising on TV. Some consumers even consider advertising as an intrusion into their privacy, leading to zapping (surfing channels). Firms with small budgets cannot compete with big companies, which spend huge sums of money on advertising. For these small budget firms, sales promotion is a more cost-effective promotion method to produce sales results. 7.Trade Has Become More Powerful Retailers and wholesalers have become powerful and find themselves in a position to demand extra facilities from the companies. They Channel members demand more incentives to get the desired results. Manufacturers do not seem to have any alternatives but to concede to their demands, keeping in view the competitive market conditions. In shopping malls like Globus and Lifestyle, decent margins have to be paid to them in order to have shelf visibility for your brand. 8. Emphasis On Sales Volumes Towards achieving the long-term profit goals, manufacturers try to attain high sales volume. Brand managers and product managers find themselves under pressure to achieve short-term sales results for the sake of their careers. Compared to any other promotional method, sales promotion is a more effective method to generate short-term sales volume. 9. Sales Promotions Maximise Profits A number of economic theories conclude that a company can maximise profits by using sales promotion. Such promotions can permit price discrimination by allowing the brand to compete in 2 or more different market segments. Sales promotion may allow a premium brand to compete with a lower tier brand among price sensitive consumers. For example, a premium brand of toilet soap may be on promotion in some price sensitive markets, while in the remaining markets it is sold at its normal price. 10. Introducing An Element Of Interest: There are a number of promotions, which are often called interest promotions. Some of the more popular interest promotion techniques are samples, contests, and sweepstakes, free premiums and mail-in premiums. These promotions create an element of interest and excitement, and consumers enjoy these and response enthusiastically to such contests and sweepstakes, etc. 11. Build Brand awareness No company can survey without building awareness for itself and its brands. Companies may use all forms of advertising be it on Television, radio, direct marketing and on line to build awareness. The specific promotional objective may be to gain additional market share or to make a roads into a specific market segment. Another objective may be to replace the market leader in top-of-mind. 12. Sales Promotion Specialists Are Available As a result of economic liberalization, the number of management institutions has increased. This has lead to the availability of specialists, who are not only well paid but can handle this specialized work more efficiently in the current market conditions, where sales promotion has become more important. 13. Excess Stocks Because of increasing number of brands, it is difficult for manufacturers and dealers to anticipate future sales. This, at times, leads to excessive inventories, and the quickest way to clear that is to go for sales promotion.

Lab Report Eugenol

Introduction Eugenol is a naturally occurring chemical that has medical applications such as its use as a natural dental anesthetic. It can be extracted from cloves by using the method of steam distillation. The extracted compound will then be separated from the water using methyl chloride, which will then be evaporated using a rotary evaporator leaving only the essential oil, Eugenol. IR spectroscopy will be used to determine the structure of the extracted compound. Results and Discussion Four samples of Eugenol were combined to be analyzed for the final product.A lower percent recovery, as indicated by Table 1 could be due to the fact that much of the weight of the cloves was not actually eugenol. Cloves Used| Eugenol Recovered | Percent Recovery| 10 g| 7. 304 | (7. 304/40) x 100% = 18. 26%| Table 1: Calculations of the percent recovery of Eugenol. Figure 1: The structure of Eugenol. The IR spectroscopy run on the sample gave results as shown in Table 2. The –OH stretch acco unts for the hydroxyl group on the aromatic ring as shown in Figure 1.The C-H peaks are from the mexthoxy group on the aromatic ring. The C=C-H are a result of the hydrogen’s bonded to the carbons of the aromatic ring. The peak from the C=O stretch is not from the compound, but may be a result of product contamination. Absorbance | Shape| Intensity| Group-motion| 3512. 21| Broad| Weak| H2O or –OH stretch| 3072. 52| Sharp| Medium| C=C-H stretch| 2948. 85| Broad| Strong| C-H stretch| 2845. 80| Sharp| Medium| C-H stretch| 1767. 18| Sharp| Weak| C=O stretch| Table 2: IR Table of sample taken.Experimental Extraction of Eugenol began by taking 10 grams of cloves and placing them in a 250mL round bottom flask. This flask was then attached to a steam distillation apparatus and heated to the boiling point of about 100Â °C. The steam was condensed and collected in a graduated cylinder. This collected material consisted of water and the eugenol contained in the cloves. 100mL of the product was collected and placed into a separatory funnel. The eugenol now had to be removed from the water by adding 15mL of CH2Cl2 and shaken.The layers were allowed to separate. The CH2Cl2 layer was more dense than water and sank to the bottom of the funnel. The bottom layer was collected and another 15mL of dichloromethane was added to the funnel to repeat the process. This was repeated yet again to obtain a final amount of 45mL of dichloromethane with eugenol dissolved in it. The 45mL of product was moved to a 100mL Erlenmyer flask. The next step was to dry the mixture with 0. 5g of CaSO4 to remove any excess water in the mixture.The flask was swirled to allow for the CaSO4 to collect any water. The product was then allowed to rest and was put through a filter to remove the CaSO4. Once filtered, four different samples were collected in a single 500mL round bottom flask. This product was then placed onto a rotary evaporator to evaporate away all of the dichloromethane and le ave behind only eugenol. This was achieved because the boiling point of the dichloromethane was much lower than that of eugenol. The final product was then analyzed by IR spectroscopy.

Analyzing Jack Londons White Fang English Literature Essay

Analyzing Jack Londons White Fang English Literature Essay Jack London was an American author who wrote quite a few books. The main focus of this paper will be on White Fang, one of his more popular books. Jack London’s White Fang exhibits his naturalist way of thinking, when discussing how the environment and natural world around him is able to raise society and exhibit the deeper truths. Throughout the book there are many references to naturalism with the use of symbols and metaphors. He also uses survival of the fittest and romanticism as major themes. Jack London uses the theme of Naturalism all through the book of white fang. Naturalists were people who view life strictly from a scientific point of view. In turn this means that Jack London thought that man and other creatures were molded by their genetics and what they were around or where they lived. The environmental theme is indicated at the start of White Fang as London vibrantly describes the landscape, ironically combining a foreboding hostility with an ominous sorrow. Jac k London wrote this book with biological as well as social determination. London insists that although Beauty Smith was â€Å"a monstrosity the blame of it lay elsewhere. He was not responsible (GradeSaver Editors)†. White Fang’s heredity is carefully defined as three fourths wolf and one fourth dog leading up to the fight within him between his sophisticated impulses and his untamed ones. London is also careful to stick to traditional facts of a White Fang’s life cycle in his early years. The nature of life was another major theme in white fang and London seemed inattentive in it. Many 19th-century readers and thinkers had this theme on their minds. In 1859, Charles Darwin pressed on ideas that came to be known as â€Å"survival of the fittest†. About a half-century later, London published this novel, which may be read as a â€Å"taking to task† of such â€Å"social Darwinism.†(Novelguide editors) The change that takes place in White Fang a t Weedon Scott’s start shows that love is the greatest power of all. With Darwin’s ideas in mind, Jack London wrote many books, the one I’m referring to is white fang. Natural selection is embodied by white fang. From the opening he is the strongest, the only one to survive the famine. His strength and intelligence make him alpha dog in the Indian camp. While defending Judge Scott, White Fang takes three bullets but is able to survive(GradeSaver Editors). He learns how to scrap with the other dogs, he learns to befriend new masters, and, finally, he learns what love is and is tamed by Weedon Scott. If White Fang explores the meaning of life, then it must also explore the meaning of civilization. It does so through the character of Beauty Smith. Beauty Smith stands as an quarrel against the distortions of Darwinism, the validation of the weak and powerless utilization at the hands of the strong and powerful; and an attempt to free individuals from the responsibil ity to exercise their own will by an appeal to a fixed destiny. Smith is the product of harsh experiences. Like White Fang, his clay has been roughly shaped. Even so, Smith has had and most probably still has choice about how to respond to his environment with a choice, for instance, whether or not to justify his existence by harming men and beasts less powerful than he. White Fang, in order to survive, does not. This marks the biggest contrast between the two characters. It also elevates the novels overarching likeness on the fight of life, however, for even as Smith is wrongly exercising his power, White Fang is rightly exercising his to continue to live: â€Å"He had too great vitality. His clutch on life was too strong† to continue to resist Smith (GradeSaver Editors). Ironically, he shows power through compliance. Thus, if Smith was a civilized man, he would know that he should treat White Fang better.

Research Design And Analysis Week 5 Assignment 2

Research Design And Analysis Week 5 2 - Assignment Example Qualitative studies also focus on development of meaning on a subject matter as opposed to the scope of quantitative research that focuses on identifying and testing existence of causal relationships. The scope of the article however identifies focus on understanding the role of critical praxis in teamwork. Qualitative research is also subjective, depends on people’s opinion and this identifies with the authors’ approach that express their informed opinion on the subject. Use of words, subjectivity, and focus on development of meaning therefore identifies the article as a qualitative article (Seibold & Kang 2008; Gerrish & Lacey, 2013). The author does not offer a theoretical framework for the study that is exploratory. No discussion therefore exists on a theory or previous application of a theory. The authors also failed to develop research questions for their study. In addition, the authors do not state their study’s dependent and independent variables. The exploratory scope of the study also fails to offer a basis for assuming variables and their relationship (Seibold,

Damas Jewellery Coursework Example | Topics and Well Written Essays - 1500 words

Damas Jewellery - Coursework Example The prime objective behind implementation of the strategies is to amplify the productivity and market share of Damas Jewellery as compared to many other rival players. In addition, by evaluating the upcoming opportunities, the organization might plan its approaches in an efficient way so as to enhance its customer base and position that may restrict the entrance of other new players. Damas Jewellery has positioned itself as one of the reputed international Jewellery and watch retailer, being headquartered in the region of Dubai of United Arab Emirates. The organization came into existence in the year 1907 and within few years, it expanded itself in more than six countries such as UAE, Bahrain, Qatar, Kuwait, Oman, Saudi Arabia and others. It mainly specializes in artistic jewellery of gold, diamond and pearls as well as designed watches. Damas Jewellery includes various brands such as Ananya, Farasha, Hayati, Mira, spring, Farfasha, Fior, Legacy, Navaratna, Rangoli, as well as many international brands like Baraka, Givori, Utopia, Garrard and others. All the above mentioned brands are available in all the 300 stores of Damas Jewellery and it tries to offer them at best prices. Moreover, the organization also tries to design, develop as well as distribute gold and diamond jewelleries to different parts of the world and as the organization desires to sell the jewelleries directly to the customers with the help of jewellery galleries, art fairs, shows as well as online sites so its rate of accessibility is extremely high as compared to many others jewellery retailers. The company also tries to sell its designed goods through B2B retailer, franchises as well as distributors. Therefore, these types of selling strategies provide highest advantage to the organization that amplifies its total sales and profitability as compared to other rival players. Damas Jewellery became successful in amplifying its customer base as it

Obtaining a future career as a Veterinary Technician can open so many Research Paper

Obtaining a future career as a Veterinary Technician can open so many opportunities - Research Paper Example Although many specialize in either small or big animal care, some can work in a mixed environment where they care for small pets and for bigger nondomestic animals (Deobrah, (n.d)). Although this work can be demanding both physically and emotionally, and although working with animals is sometimes dangerous, the future of the Veterinary Technician career is promising. People who love animals happen to derive a great deal of satisfaction from this job. Owing to the fact that the tendency to love and keep pets is generally increasing in the world, employment in Veterinary Technician career is expected to grow at a much higher rate than the average (NAVTA, 2002). With the increase in establishment of Zoos and Aquariums, job opportunities are expected to increase and the demand for Veterinary Technician is expected to rise. All this notwithstanding, engagement in Veterinary Technician career, is set to open so many opportunities in the future. With the growth in technology related to all facets of life, research work has become more and more relevant in the modern society. In the future, Veterinary Technician career is going to venture more and more into research work, working in research facilities, where the technicians prepare samples for laboratory tests, offers medications to animals and record histories of the animals, regarding their health, weight, diet, genealogy and clinical medication history (Veterinary Technician, 2006). Most significant is the role of the Veterinary Technician in contributing not only to animal heath but also to human health. Veterinary Technician works closely with other medical experts in the research fields, to come up with new inventions that can help improve not only the medical conditions of animals but even that of humans (Veterinary Technician, 2006). While working under laboratory test such as

Knowledge and Skills Essay Example | Topics and Well Written Essays - 1500 words

Knowledge and Skills - Essay Example This 'Knowledge and Skills Framework' is designed in the United Kingdom, to understand, and sustain personal and career development. It helps to identify the skills and knowledge individuals should apply to their jobs so that they are provided with equal opportunities of progress throughout their careers. 1. I have served many non profit and for-profit organizations over the past years of my life. These include fulfilling the duties of an administrator, director, operations manager and as a full time social worker at many organizations. This kind of massive exposure to the real world problems related to the management of these associations has led to the development of my psychosocial abilities and I have fully utilized these abilities to the best of my capabilities. I have served as a full time social worker at the Fresenius Medical Care formerly known as Renal Care Group, Inc, Wynnewood. This facility provides dialysis treatments to adults in 3 countries simultaneously. At the DaVita Dialysis also provides dialysis treatments to adults and Delware County and South Philadelphia area. Also, I have demonstrated my skills as a Director at 'Tressler Lutheran Services, West Chester' which provides clinical therapy to adolescents and families in the area. From 1995 to 1996, I was the 'Pro gram Director' to a foster child care and adoption services facility called 'Children's Choice', in Philadelphia. I also have served as a 'Family Preservation Case Manager' at 'Family and Community Services of Delaware County'. A. During my experience as a social worker at Fresenius Medical Care, I managed a caseload of 160-180 patients. This management was in regard to psychosocial issues, insurance coverage and transportation concerns. At DaVita Dialysis facility, where I handled the case load of 140 Upland and 75 Upper Philadelphia from May 2002 to November 2002, similar challenges were faced. The psychosocial needs of the patients admitted in these facilities were tremendous. They ranged from information about their therapies to possible side effects, stress, depression and other mental and emotional conditions. Patients suffering from dialysis undergo extensive treatments and also seek assistance in the normal day routines they can't perform independently. All these issues were successfully taken care of. The psychodynamic theory was greatly applied in these situations where the patient-doctor emotional relationships were encouraged. Successful documentation of psychosocial assessment and needs was do ne at both the facilities, keeping in mind the Medicare guidelines and Federal regulations. Patients were made comfortable with their treatments, by thoroughly informing them about the medical procedures. B. While working at the Children's Choice, my range and scope of experience increased as I was subjected to handle special need groups. These groups call for special attention psychosocially and are to be handled with care and devotion. The application of psychosocial theory has been the basis of my efforts in all these situations. Special attention was given to offer increased level of care both physical and emotional. Also, it was indemnified that the Child Welfare Regulations were being effective followed as required by the Department of Human

Cultural Differences of Brazil, China and Nigeria Essay - 4

Cultural Differences of Brazil, China and Nigeria - Essay Example Like any other company, Stipel Marketing has to prepare itself for this process and this reports highlights some of the factors that need to be considered to enable a smooth transition. Human resource is very important to any organization. This is because it provides the organization with skilled manpower that helps it to achieve its objectives. Our organization provides an open type of communication platform where employees and their supervisors get to interact freely and share their thoughts and ideas. Given that we are a marketing company, communication is core in our business and this must be enhanced at all costs. At the United Kingdom head office, the staff has adapted to this open plan network and it has proved beneficial to the company so far (Green, 2011). As the company seeks to expand and explore other business opportunities around the globe it is important for the company to analyze the communities in these target markets so as to know which approach to use to get the best talent. In some areas around the globe, workers are not allowed to mingle freely with their supervisors and this is what will make them perform optimally. However, in other parts of t he globe, employees are free to interact with their superiors (Gordon-Reed, 2008). This gives them a sense of togetherness and they are able to perform more efficiently. All these factors are to be considered if the organization is to establish sustainable and rewarding working relationships with these colleagues from other countries. The countries that are in focus in this report are Nigeria, China and Brazil, each of which has its own distinct culture. The role of this report is to showcase the opportunities and the challenges that may arise as the organization tries to establish cross cultural operations (Golden, 2005).

Swimming pools Essay Example | Topics and Well Written Essays - 500 words

Swimming pools - Essay Example There are many reasons for beaches being contaminated. "Fecal contamination occurs due to improperly constructed and operated septic systems and sewage treatment plants, manure spills, storm water runoff from lands with wildlife and pet droppings, or direct contamination from waterfowl, livestock, or small children in the water" (Iowa Department of Natural Resources). Other reasons are the presence of pathogens in the intestines of warm-blooded animals including human beings. The best way to identify fecal contamination is to use indicator bacteria. Escherichia coli or E. coli and Enterococcus sp. are the indicators used by the Environmental Protection Agency (EPA) office to identify fecal contamination in seas, lakes, ricers, etc. The indicator bacteria, which are used to identify fecal contamination don't make anyone sick. They are found everywhere in the environment. Presence in high levels of these indicators indicates that has come into contact with fecal material and pathogens or disease causing organisms may be present. Diseases like Diarrhea may be the result when anyone comes in contact with the contaminated water. Illnesses like sore throat, vomiting, sinus infections, stomachache, fever, headache and other skin related diseases might be caused due to the fecal contamination. One of the difficult tasks for every health organization is to monitoring the beaches.

Toyota and Hilton Hotels Essay Example for Free

Toyota and Hilton Hotels Essay Preliminary Links Toyota and Hilton Hotels are the two companies chosen to answer the questions given for this assignment. The product service divide is more of a continuum in these two companies, with Toyota using large doses of intangibles to enhance its products, and all Hilton hotels offering strong product elements in their superlative service. The Internet sites of the 2 companies, including their web pages for investors have been used for this assignment, with a standard text on Services Marketing, which also covers product elements of the Marketing Mix. The web site of the New York Stock Exchange, where both companies are listed, has also been used. Marketing Comparisons   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Both companies have brands for multiple segments (Payne, 2002). Toyota has automobiles for various purposes, while Hilton has different kinds of hotels for each category of guests. However, individual product brands are subordinate to corporate brands in both cases (About Toyota, 2006 and About Hilton Hotels, 2006). Hilton remains within the premium segment space in its service category, and does not operate any budget hotels, while Toyota offers economy models and commercial vehicles apart from its luxury range. Toyota therefore has a broader product range than Hilton. Distribution channels for automobiles and hotels are distinct. Recruitment and training of front-line staff matter more for Hilton, while Toyota relies on agency and franchise personnel for most of its marketing: the People element of the Marketing Mix is therefore critical for Hilton, but incidental for Toyota.   The Process element of the Marketing Mix (Payne, 2002) also matters for a hotel business, while there is less variability in customer interaction for Toyota. Process is more important for internal efficiencies in Toyota, whereas they impact directly on service levels in the business of Hilton. Promotion is more developed in Hilton with international guest room reservations available in real time on the web site, whereas Toyota prefers to make isolated compartments of its marketing activities in various countries. This difference may be related to greater global uniformity in the decision process for reserving hotel rooms than that for investing in automobile purchases. Overall, each company has to focus on different elements on the Marketing Mix, as relevant for their respective strategies.   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Toyota faces a more intense competition than Hilton, as the latter has locations as advantages for many of its properties, and has significant capacity utilization guaranteed by airlines, travel agents, and similar industry associates. The numbers of brands that can challenge Hilton are fewer than the equally reputed manufacturers with which Toyota must contend. However, Hilton must contend with more brand switching opportunities, while Toyota customers are tied in for much longer periods. Toyota’s financing business ties in customers, which is a resource that Hilton lacks (Listed Company Directory, 2007). Word-of-mouth promotion matter equally for both companies, but Toyota has to make a greater effort for after-sales service. Toyota must provide customer finance amenities through arrangements with financial institutions, something which does not concern Hilton. However, the latter must provide lines of credit for major clients, whereas Toyota enjoys an immediate realization of sale proceeds convention (considering the automobile business in isolation and as distinct from the financing arm).   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Physical Evidence and Preferential Customer elements (Payne, 2002) are vital ingredients of the Hilton Marketing Mix, whereas Toyota can rely more on its distribution chain to provide these values to customers. Maintenance of public areas and exteriors, even during lean season, is an additional cost burden to be borne by Hilton, but this would be significant in the pricing structure of Toyota’s products: Toyota manufacturing plants are not generally in customer views!   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Both companies are free to price their products without regulation, but Hilton must contend with the deep discount norm for its industry, while Toyota is not as dependant on promotions and deals, except for occasionally unsuccessful models.   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Both companies have composite and effective marketing functions as evidenced by the strengths of their brands, though they have to deploy different strategies to suit their respective business lines. Comparison of Operations   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Both companies believe in strong centralization and group control. Both Toyota and Hilton have sound and extensive headquarter organizations (About Toyota, 2006 and About Hilton Hotels, 2006), and exercise invasive degrees of standardization on their operations in various countries. However, Toyota has to contend with more ethnicity, and is more present in the third world, whereas Hilton basically caters to rather uniform business and vacation classes, with a strong focus on the developed world.   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Though Toyota does have manufacturing plants around the world, construction of new properties and maintenance of existing ones presents larger engineering and project management challenges for Hilton. Storage and transport of finished goods, on the other hand, must concern Toyota, whereas they would not figure in agendas at Hilton. Purchasing is more complex for Toyota, with more sophistication involved in sourcing semi-precious metals, steel, and other strategic materials. Toyota has also to implement more transparency in its operations, since it is registered under the ISOI 14001 series (About Toyota, 2006).   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Toyota also has to maintain more tracks of its customers and product locations because of the possibility of recalls, whereas Hilton does not have to contend with such possibilities. Toyota also has more regulations with which to contend, while Hilton has more freedom to set its quality standards.   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Toyota is strongly influenced by technology, with new models, standards, and materials causing regular discontinuities in routine operations, whereas Hilton enjoys a more stable environment in this respect. There have been some improvements in telecommunications and entertainment, which have occasioned guest room upgrades at Hilton, but these are simple and minimal compared to emission standards, engine performance, and design changes with which Toyota must deal all the time.   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   It would appear that Hilton is in a less complex type of enterprise, while Toyota has to deal with more inter-relationships and different business atmospheres. Comparison of Human Resources Management   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   The relative natures of business make people more important for Hilton than for Toyota: this is reflected in the competencies promoted in the respective web sites (About Toyota, 2006 and About Hilton Hotels, 2006). Technology and systems weigh so heavily in Toyota’s success that it can rely on smaller numbers of subject-matter specialists, whereas even one customer upset at the behavior of low-level staff, can dilute the Hilton brand. The Human Resources challenge for Hilton is to inculcate the core brand values in every employee at all its properties. The People and Preferential Customer elements of the Marketing Mix matter more for Hilton than for Toyota.   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Recruitment is highly centralized in Japan for Toyota, while Hilton must retain local expertise for this purpose in all major countries and regions. Searching for quality talent is a more exhaustive task for human resources professionals in Hilton, since the process has to reach in to lower levels of the organization. Production-line jobs at Toyota are easier to specify and for induction training purposes, and the numbers and importance are on the wane in any case, because of the spread of robotics. Artificial intelligence cannot replace the human element at Hilton. Both companies are equally vulnerable to industrial relations in certain countries, which tolerate militant postures by Unions-the U.K. would be a prime example of this common concern. Toyota and Hilton are in similar situations when it comes to negotiating with external leaders for their blue-collar workers.   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Career planning, appraisal, and remuneration matters are probably more international at Hilton, and relatively ethnic in a Japanese sense at Toyota. Senior Executives at Hilton are more eclectic than at Toyota, so their mobility options are also greater. Diversity issue matter more at Hilton, because Toyota conforms to a more conservative and closed pattern as a clearly Japanese entity.   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Human Resources Management at Toyota has an additional function compared to their peers in Hilton, with respect to training of franchisee and distribution chain employees. Hilton follows the business model of strongly branding all the properties which it operates, apart from the ones which it owns, while Toyota is clear-cut in leaving customer service to associates in its distribution chain. However, disgruntled customers at show-rooms will hurt the Toyota brand, so the company has to be able to influence people who are not their own employees. Comparisons of Accounting and Finance   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Both companies are publicly listed on U.S Exchanges (About Toyota, 2006 and About Hilton Hotels, 2006). However, Toyota offers only Advance Depository Receipts, retaining equity ownership exclusively in Japan. We may therefore expect that both companies have to follow similar treasury standards. The accounting, disclosure, and governance standards of the United States, which are amongst the best in the world, would apply to both companies. Both companies have adequate investor information on the web sites, and must follow accounting practices of comparable if not the very same standards.   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   There are however, major differences in corporate finance strategies. Toyota invests capital in entities which it does not own fully, whereas Hilton develops revenue lines from properties which it does own. Both companies are in capital intensive lines of business, and both are vulnerable to seasonal fluctuations in cash inflows.   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Neither company is backward integrated in to ownership of key suppliers. Public statements about future business prospects indicate that both companies have exhaustive planning and budgetary control systems in place, though information on their internal processes is not available.   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Both companies have ambitious capital expenditure plans, and exhibit high credit-worthiness and potential for leverage. The lines of business and investor environments are too different for relevant comparison, but Toyota has greater return and value appreciation potentials.   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Toyota has a finance business apart from its core activity of automobiles (Listed Company Directory, 2007). This tangent is to help customers and sellers pay for the company’s products. Hilton does not require any such service for its clients and associates. One may conclude that the Toyota needs more complex accounting procedures because of the need to keep track of dues from customers. Both companies have adequate representation of the finance function in their top management groupings, and neither is known to have been cited for financial irregularities, or for audit and disclosure lapses. It is possible to conclude that the accounting and finance companies of both companies meet the best international standards. Toyota has been recognized by the New York Stock Exchange for excellence in investor relations, which is an additional and significant feather in the cap of its finance function: Hilton cannot claim any such public recognition of excellence in its finance function as yet. Comparison of Information Management   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   The online reservation amenity and the reward program for loyal customers show, from the respective websites, that Information Management is more fully used by Hilton. The Toyota website lacks multi-media Information Technology use, which could have enhanced browser experiences. It may be that the company uses Information Technology more fully for secret internal processes, but such technology application is lacking in the public space for the company. Hilton also has concrete evidence of using Information Technology to enhance customer value through its express check-out facility, whereas Toyota makes no mention of such conveniences at its show rooms, or for after-sales-service alerts. Toyota has not used opportunities of newsletters and clubs for its customers, which Information Technology offers. The customer response facility on the web site is better and easier to use in the case of Hilton (About Toyota, 2006 and About Hilton Hotels, 2006). Hilton does not allow customers to feel any difference in properties which it operates without owning, whereas Toyota has no perceptible use of Information Technology to standardize customer experiences at all the show rooms and outlets where its products are retailed. Hilton does a better job of enhancing its brand through useful information on related matters, such as places of interest near its properties, whereas Toyota seems to be pre-occupied with hard product features of its models alone. However, both companies use Information Technology to build images of being attractive employers, and devote spaces on their websites for corporate and recruiting issues.   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Overall, Toyota needs a superior accounting and finance function, and encounters more complex operations, while marketing is of equal importance to both companies, and while Hilton excels in Human Resources Management, and Information Technology. Comparison of and Recommendations for Productivity   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   The productivity comparisons for these two companies and my recommendations in this regard, relate primarily to business definition, and to levels of integration and disengagement. Hilton suffers chronic underutilization of its competencies. Enhanced airport services, airline operation, and conducted tours, are the sorts of horizontal integration it should consider to generate more revenue from its base of fixed costs. It may be justified in staying away from actual travel work such as airline operation because it would call for large influxes of fresh commitments, but by improving retail services at airports, and by conducting packaged events for premium customers groups, it can certainly capture significant new values and high margins, without adding to the present infrastructure.   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Hilton should also move faster out of North America in to emerging markets and popular adventure and eco-tourism destinations, because this would leverage its expertise in constructing and operating hotels, more fully. The company must have accumulated know-how which is used only marginally in the mature markets in which it is focused now.   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Finally, Hilton should copy other chains and build its culinary expertise and resources in to processed food brands, brands of alcoholic beverages, especially wines, and specialty outlets for fine dining.   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Overall, Hilton’s productivity is hampered by a narrow business definition. It has acquired assets and built capabilities to support the corporate brand that have large and profitable applications outside the field of hotels.   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Toyota has gone to the opposite extreme of Hilton, and spreads its resources too thinly for optimal returns. The fixed costs of design, dealer support, and after-sales-service imply that it should exit from economy-priced product and customer segments. The expansion of premium-priced segments in major markets justifies exclusive focus on them, in productivity terms. It is significant that Toyota has experienced losses through recalls of one of its cheaper models in the recent past (Listed Company Directory, 2007). Developing pressures on the environmental conservation front demand that it concentrate more on new technologies for its engines, at the cost of resources presently tied up in low value segments, even if they contribute high volumes. The company is still in the process of creating new manufacturing capacities (Listed Company Directory, 2007), so this is an opportune time for it to consider restricting its involvement in segments with relatively low returns.   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Rising customer expectations and the spread of some of its hitherto proprietary technologies to competitors, also point to the need to try and serve fewer customer groups, albeit to do this with greater effectiveness for the segments in which it decides to remain. Such an approach may require that it move away from shared dealerships to owned-showrooms in star markets, while withdrawing support activities for other markets that do not yield top returns. Business contraction will improve productivity for Toyota: the company is better off than Hilton in this parameter, but needs to review some of its operations in order to sustain the edge. Comparison of and Recommendations for Quality   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Toyota is a step ahead of Hilton in terms of quality, primarily because of its ISO 14001 registrations (About Toyota, 2006). It is one of the first companies in the automotive sector to seek ISO registration. The company has reduced the amount of land it needs for manufacturing, and the quantity of paint it consumes, because of ISO procedures. The registrations have also resulted in important productivity gains in areas such as recycling and waste management. The ISO system leads to continuing improvement, so by maintaining its ISO status, Toyota can look forward to continuing quality gains. Though the company continues to suffer from occasions for model recalls (Listed Company Directory, 2007), the probabilities of such events are low.   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   The decentralization of Toyota’s operations is also responsible for its strong ratings in terms of quality. The company brands similar models very differently in each country, and is sensitive to ethnic needs and perceptions. The company is able to meet top quality standards by considering the views and needs of local customer groups with care. Though the ownership and top management of Toyota is centralized in Japan, the company is sensitive to the peculiarities of all customers and geographical groups which it tries to serve. It is a mark of Toyota’s excellence in quality that it has been able to garner market shares from established manufacturers of luxury automobiles, and has brands with top ranks in premium segments.   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Though Hilton is a quality brand in general terms, it does not follow the ISO system, and suffers set-backs as a consequence. One of its hotels has recently been forced to suspend operations because of a virus outbreak (Listed Company Directory, 2007). The company also faces litigation from the family of a person killed inside a room-sized air-conditioning unit in one of its properties (Listed Company Directory, 2007). These are recent examples, and the company is vulnerable to more incidents of this nature at any time.   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Overall, company is not a matter to be left to chance, or something which can be limited to certain compartments of the business alone. Hilton will need to adopt a system which makes quality more assured in all aspects of its operations. The recent incidents reported indicate that while the company may be well versed in such quality aspects as house-keeping of its rooms, it lacks appropriate standards in other technical areas related to security and public hygiene. Every enterprise will have limits and gaps in its areas of expertise, and only a system such as ISO can raise quality standards uniformly. However, the recent incidents are exceptions and Hilton is generally associated with high quality standards. The popularity of its reward system for regular guests, and the premium rates it charges are indicators in this respect. Overall, Toyota has a more reliable quality system in place, compared to Hilton, and the latter can catch up through a systematic and concerted effort. References About Toyota, 2006, Company Website accessed January 2007 from:   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   http://www.toyota.com/about/shareholder/ About Hilton Hotels, 2006, Company Website accessed January 2007 from http://www.hilton.com/en/hi/brand/about.jhtml Listed Company Directory, 2007, New York Stock Exchange Web Site, accessed January 2007 from http://www.nyse.com/about/listed/listed.html    Payne, A. 2002 The Essence of Services Marketing, Prentice-Hall

The Pump Condition Monitoring Engineering Essay

The Pump Condition Monitoring Engineering Essay To avoid unplanned downtime, realize energy savings or other considerations, pump users require a method or tool to determine the appropriate time for overhaul of a pump. This method or tool is used by engineers in managing assets to provide capacity for production and energy efficiency to save operating expenses or even to minimize greenhouse impact.   This optimization method can be applied to all items where deterioration results in equipment breakdowns or loss of efficiency. Pumps like any rotating machine tend to rotate in response to excitation forces like residual rotor unbalance, turbulence in liquid flow, pressure pulses, cavitations and wear of pump. If vibration frequencies and natural frequencies match, resonance occurs, amplifying the vibrations. This is a sufficient cause to damage pump components Why Pump Condition Monitoring is important: (Source http://www.pumpmonitor.com) Pumps are used at about 20% of the worlds most electrical power generating companies. about 7% of the worlds green houses gas productions. power and preservation usually covers more than 50% of Life sequence expenses. Statistics show that 20% or more of the energy devoted by pumping systems could be saved throughout equipment and control alters. Pumps are frequently considered critical mechanism of a process. Plant reliability is best possible when they are maintained on a regular basis or nonstop state monitoring. Performance based maintenance costs are considerably lesser than a schedule based costs. Hence it becomes very important to Condition Monitor the pumps. Chapter -2: Aim Objectives The object of this research study is to critically study Condition Monitoring of both, Centrifugal and axial pumps. That will include most important aspects like: Condition Monitoring and its Part in Maintenance Pump Performance and the Effect of Wear Performance Analysis and Testing of Pumps for Condition Monitoring Performance Analysis and its Application to Optimise Time for Overhaul Other Methods of Performance Analysis for Pump Condition Monitoring Vibration Analysis of Pumps Other Uses of Condition Monitoring Other Condition Monitoring Methods Positive Displacement Pumps Case Studies Chapter -3: Project plan Attached with this report Chapter -4: Introduction About Pumps Pumps are used to add energy to fluids. Generally it is done by using a rotating blade to force a fluid in a given direction. Classification of pumps: PUMPS Centrifugal Pumps Positive Displacement Pumps Radial Flow Pumps Axial Flow Pumps Reciprocating Pumps Rotary Pumps Gear Pumps Piston Pumps Progressive Cavity Pumps Plunger Pumps Screw Pumps Diaphragm Pumps Lobe Pumps [Figure-1: Different types of Pumps] a) Positive Displacement pumps: A positive displacement pump, as the name suggests, pushes a fluid by containing a fixed amount of it and then displacing the entire contained volume into the pipe. Positive displacement pumps produce a constant flow at any given speed and hence are called Constant Flow Machines. These are used for pumping fluids other than water. Following types of mechanism are used to displace the fluid: a1) Reciprocating Type: Reciprocating pumps are plunger pumps or diaphragm pumps. Diaphragm  valves. Recently used for slurries treatment in plants, and are used to force dangerous, toxic materials. a2) Rotary Type: These pumps use rotation principle. These are mostly used in, oil burners, soaps, cosmetics, sugars, syrup, and molasses, as well in dyes, ink, bleaches, vegetable and mineral oils. Gear pump: Two gears rotates in a closely fitted casing. A common application of the gear pump is the engine oil pump in car engines. 3655-004-DFDC07E0 [Figure-2: Gear Pump] Progressing cavity type pump: These are applied for pumping sewage sludge contaminated with large particles. Helical shaped rotor is used. [Figure-3: Progressive Cavity Pump], (Image Source: http://www.highflowpumps.com/) Lobe Pumps: Fluid is passed between the rotors teeth and the volute chamber. lobethe [Figure-4: Lobe Pump] Screw Pumps: Screw pump transmits fluid into the spaces between the screw gears. screw23muthÄ ±s [Figure-5: Screw Pump] b) Centrifugal pump: They are widely used in general piping systems. These are used for pumping water in industry and constitute 75% of pumps installed b1) Radial Flow Pump In a Radial Flow pump, fluid is discharged in a direction perpendicular to the direction of intake or suction. The fluid flowing into the pump first makes contact with a spinning impeller. This deflects the fluid away from it. The fluid is pushed out through a circular casing around the impeller. In this case fluid pressure increased not the speed. Fluid is sucked into the pump along the axis of rotation of the impeller. It is accelerated in a perpendicular direction into a diffuser chamber. From here it is discharged into the outlet pipe. Centrifugal pumps are applied where there is small head and large discharge is required. These have high hydraulic efficiency. These are used in waste treatment plants. Screw type centrifugal pumps are very effective in sludge handling , comprising of fibrous elements and for handling sludge with up to 10% dry matter . centrifugalpumps11 [Figure-6: Centrifugal Pump] (Image source : http://www.thomasnet.com/articles/image/centrifugal-pump.jpg) b2) Axial flow pumps: In an axial pump, the discharge and suction are both in the same direction. Flow is along the axis of the blade. Axial pumps are used to increase of speed of fluid flow without increase of pressure. They have high flow rates and can operate at very low pressure. QZ-Axial-Flow-Pump [Figure-7:Axial Flow Pump] http://www.made-in-china.com/image/2f0j00vBjTwGKSSIbeM/QZ-Axial-Flow-Pump.jpg Chapter -5: Maintenance and Condition Monitoring: About Maintenance: The intention of performing maintenance is to provide optimum capacity of production at the lower cost. Maintenance should be preferred for reliability and not as repair. There are 4 Types of Maintenance, which are given below: (a) Preventive Maintenance: This type of maintenance prevents failure from occurring. It comprises of scheduled periodic maintenance checks. Such maintenance prevents breakdowns and ensures delay free functioning. The advantages of preventive maintenance include: Enhanced systems dependability. reduces cost of substitute. cuts system downtime. Better standby account management. (b) Corrective Maintenance: Maintenance performed to correct an error after a failure has occurred is corrective maintenance. The failed component may require restoration , repair or replacement. (c) Breakdown Maintenance: If a machine breaks down or malfunctions , breakdown maintenance is performed to return it to normal functioning. This is done by replacing or repairing parts. (d) Predictive Maintenance: This type of maintenance consists of methods of observing the condition of in service machines and thus predicting when maintenance is required to be performed. This method reduces costs as compared to preventive maintenance as tasks are only performed when necessary. Condition monitoring is a type of predictive maintenance. It involves prediction of condition of a machine by on monitoring its performance, statistical process control or equipment behaviour to detect defects at an early stage and rectify them, which could otherwise result in delays leading to unnecessary expenditure. Maintenance is performed while the machine/ equipment is in operating regularly , with little or no interruption in its functioning. The methods for detection of errors include infrared thermographs, circuit analysis, analysis of vibrations etc. Predictive Maintenance or Condition monitoring a smart way to reduce downtime and reduce cost. The fundamental purpose of maintenance is to contribute for profit objectives, by maximizing the production and safety of people and plant. This report will explore how maintenance should be used as a tool to keep pumps working to its optimum level. Condition based maintenance: Definition of Condition Monitoring: Condition monitoring is part of maintenance, not something done by experts from outside (Beebe, 2001) Signs of degradation are detected in operational equipment by monitoring the equipment through continuous inspection. Data collected is analysed , and a prediction is made for the duration in which a machine can run safely without failure. Condition Monitoring is the art of monitoring of the equipments health by taking simple measurements of the machine performance. It works the same as a Doctor checks (measure) the health by checking pulse, temperature, blood pressure etc of a person. If we measure the current draw and the outlet flow of a pump and find out that that the current draw was increasing while the outlet flow was decreasing, as compared to the previous months measurements, there are very good chances that the condition is deteriorating and that some maintenance was due for the pump, The scheduling of the monitoring is decided by the size of plan, ease of data collection etc. This may be done everyday, once a month or on an annual basis. Advanced technology may be used for condition monitoring. It may not be limited to Vibration sensors Infrared Thermographs Oil sensors Ultrasonic equipment Motor Current Analysis Pump life cycle costs Pump life cycle cost is defined as the sum of the commissioning cost, maintenance cost, running cost and decommissioning cost for the period of a pumps service life. Complete understanding of the pumps lifecycle cost helps us to radically reduce the energy consumed , thus greatly reducing the pumps environmental impact PLCC = Cin + Cins + Cpo + Cop + Cm + Cd + Cen + Cdc PLCC = life cycle cost Cin = initial costs, purchase price (pump, system, pipe, other services) Cins = installation and commissioning cost (including training) Cpo = power consumed costs Cop = operation costs Cm = maintenance and repair costs (routine and predicted repairs) Cd = delay costs (loss of production). Cen = environmental costs (contamination from pumped liquid ) Cdc = decommissioning (counting renovation of the home Environment) Maintenance Cost of a Pump in its Life Cycle: [Figure-8: Maintenance Cost] (Image Source: http://www.waterworld.com) The costs for maintenance are dependent on the actual equipment involved , records can be consulted to make cost estimates. The annual cost has to include the following: Value of spare parts used. Charge for any third party work. plant employment. workplace charges. Normally Maintenance cost of a Pump within its life cycle is estimated 20%. Pump selection reliability factors Reliability of machines, has been increasingly debated in recent years . Low reliability of commonly used centrifugal pumps has been a focal point of this debate. Pump selection is very important its reliability. But it is not the only factor for reliable pump operation. Other critical installation parameters are also important. The main factor for enhanced reliability is selecting the right pump. Pump Selection The first step in pump selection is deciding the pump parameters. The head and capacity required have to be calculated. There are three major conditions related to reliability which affect selection; operating speed (FR), impeller diameter (FD) and flow rate (FQ). Operating Speed RPM (FR) Wear based on operating speed caused due to friction in rubbing contact surfaces like mechanical seals and shaft seals affects the reliability. Life of bearings and heat generated in bearings is another cause for lack of reliability. For all the above mentioned conditions wear has a linear relationship with the operating speed of the pump. Impeller Diameter (FD) The impeller exerts a significant load on the shaft and bearings . This directly affects the reliability of the pump. Two types of loads are produced; one is due to the non uniform pressure distribution in the casing, the second is due to the interaction between the blades of the impeller and the discharge. This second effect is extremely hazardous as it forces the seal faces to move away from each other repeatedly during each revolution. The intensity of this movement may be greater than steady deflection. There is a cubic proportionality between these loads and the impeller diameter. Flow Rate (FQ) The flow rate of a centrifugal pump is the best efficiency point or BEP. Pumps are designed in such a way that they are most reliable only at a given flow rate for a specific operating speed and impeller diameter. The loads exerted on impeller at this flow rate are minimised. If the flow rate is more or less than the BEP than the load intensity increases and there is turbulence in the rotation of the impeller. Such unpredictable loads share the same effects on reliability as the impeller/discharge loads discussed above. Pumps are examined to check the ability to withstand the effects of these impacts. The main parameters of the tests are: R.P.M. Impeller dimensions. Flow velocity. Pump shaft to motor alignment. N.P.S.H. Margin. Reliability Index (RI) The Reliability directory is shaped as a product of three factors: RI = FR x FD x FQ Values vary from zero to one; the higher the value the better the dependability is. Techniques of Condition Monitoring Vibration Monitoring Analysis: is commonly used as a Monitoring analysis. It helps to determine the structural stability in a system. It is best suitable for rotating machines like pumps. Vibration measuring instruments are used for measurement. The frequency of the vibrations are mapped. If a defect is present a particular frequency will be detected. Analysis made previously on existing equipment can be compared to analysis on new equipment. This data will give the condition of the equipment. vibration [Figure-9:Vibration Chart] (Source: http://www.pemms.co.uk/Condition_Monitoring.html) Visual Inspection: Devices like mirrors, TV Camers are used for Visual inspection. Visual inspection in its most basic form may also be done by experienced inspectors and maintenance technicians. Causes of failure like cracks, leaks and corrosion can be detected and prevented. This is the cheapest form of condition monitoring. It also adds a sense of attachment between the equipment and the people who work on it. Only visual inspection technique is not enough. It should be augmented by other techniques. Performance Monitoring and Analysis: Analysis is done on usage of energy, as more energy usage means deteriorating condition of the machine. Performace can bne measured with parameters like Pressure, flow rate or temperature etc. Analysis of wear particles in lubricants or contamination of process fluid: This process gives advance warning than many other predictive maintenance methods. oilanalysis [Figure-10: Contamination of Process Fluid] (Source: http://www.pemms.co.uk/Condition_Monitoring.html) Spectrographic oil analysis may be used to test the chemical composition of the oil. Chemical analysis of oil is carried out for appearance, density, viscosity, moisture content, mechanical impurities. High silicon content points to a presence of contamination of grit.. etc, and high iron levels indicate to tiring components. Independently, elements give reasonable indications, but when used together they can accurately determine the failure modes, e.g. for internal combustion engines, the presence of iron/alloy, and carbon would indicate damaged piston rings. (Source: http://en.wikipedia.org/wiki/Condition_monitoring) Ferrous and non ferrous particles in the lubricant may be detected by wear debris detection sensors which can give a warning if the condition of the equipment deteriorates. This system prevents failure in machines like gearboxes , turbines, pumps etc. Ultrasonic Analysis: Time and frequency data from ultrasonic tests can reveal a lot on the health of a machine. Portable ultrasonic testing equipment is now a common tool for noticing leaks, testing steam traps, finding cavitations, bearing condition testing and toughness testing. What are Ultrasound Signals? Ultrasound refers to noise of frequency beyond the range of the human ear. For detecting airborne leaks, the frequency at which the most sound is produced by an unstable leak is 38.4 kHz. There are instruments, which listens to this frequency to detect leaks. Electronics processing is required to make ultrasound audible. This is done filtering of frequencies. Why Record Ultrasound Signals? Judgment, Trending, verification of analysis. Guidance of Maintenance observers. Examination of low speed bearings. Investigation of electrical defects. Inspecting of steam traps. Analysis of reciprocating compressors. How to Record Ultrasound Signals? Regulates rise of detector. Corrects level of recording device. Spins Auto Gain Control . Records the signal and transfer to PC. Opens signals in computer for laboratory analysis. The classic time signal for a bearing defect gives a goldfish envelope like this:. (Thomas J. Murphy) ultrasound_analysis_07 [Figure-11:Ultra sound signals] Infrared Thermography Temperature is the best indicator of the state of a machine. One can check the temperature of any surface and determine the condition of a machine.. Infrared Thermography is an inspection technique which gives accurate, reliable and correct temperature outline of any material exterior without getting in touch with the surface. The essential perceptive of thermography is that every object produces certain amount of Infrared energy and the intensity of this radiation is a task of temperature, hence by measuring infrared radiation, temperature of surface can be calculated. (Garnaik) Infrared thermography is a fast and secure way of detecting imperfections in different conditions. Infrared cameras can be used to detect increases in temperature that indicate latent problems. These may increase the temperature of electrical contacts or insulators. IR thermography can easily be carried out during normal operation of equipment as it is non contact. This reduces downtime. Advantages Disadvantages of IR Thermography Following are advantages and disadvantages of this technique. Advantages : à ¢Ã¢â€š ¬Ã‚ ¢ It is a non-contact type technique, and modern Infrared camera can be used . à ¢Ã¢â€š ¬Ã‚ ¢ It is Fast, reliable accurate output. à ¢Ã¢â€š ¬Ã‚ ¢ Time required to measure large surface area is very less. à ¢Ã¢â€š ¬Ã‚ ¢ The output can be presented in visual digital form. à ¢Ã¢â€š ¬Ã‚ ¢ Since the output can be presented in visual form, there is little skill required for monitoring. Disadvantages : à ¢Ã¢â€š ¬Ã‚ ¢ Instrument cost is very high. à ¢Ã¢â€š ¬Ã‚ ¢ This technique is used to work out the temperature of surface. It is unable to detect the inside temperature Noise monitoring Noise level are taken every month at designated locations. Steps for implementation of Condition Monitoring Technique for Pumps Selection of equipment Selection of parameters / probe Selection of monitoring frequency Preparation of schedule Preparation of database. Actual monitoring and analysis Selection of monitoring frequency Daily (for critical equipments) Fortnightly (for sub critical equipments).) [Figure-12: Condition Monitoring Steps] Benefits of Condition monitoring Condition monitoring has become a proven method and has become essential part of industries as companies has proven its cost benefits. Condition monitoring gives early detection of wear out/damage. Condition Monitoring people tour the plant and picks up developing faults Deterioration is detected in time and repairs are scheduled. It minimises unnecessary shutdown and opening up of plant Cost of labour, material and loss of production is saved More satisfying work of maintenance, less effect of errors because of direct feedback of quality work. Judicious use of Condition monitoring can yield 10 to 20 times the initial outlay within first year (IK Dept trade Industry report, maintenance to late 1990s) Condition monitoring reassurance of safe continued operation(and vary effective when nursing on plant to a suitable maintenance opportunity) Condition Monitoring saves cost reduce spare usage and lower insurance. Cost Savings from Condition Monitoring A Quick cost saving estimate is made to calculate the cost saving easily. Quick cost saving estimate at each inspection saves delays. For example, a coupling is found broken and approximate to cause about 2 hours of delay leads to an unplanned maintenance job. The calculation: Cost A: If the coupling broke down without warning: Delay * Cost of Delay/hr + Direct maintenance cost (unplanned Unscheduled) + Potential damages Cost B: Maintenance during scheduled shutdown. Actual cost of maintenance: Delay (if any should be fixed in scheduled shutdown) * Cost of Delay/hr + direct maintenance cost (planned scheduled) + Damages(= 0) . A- B = Cost saving, which may be as high as thousands of Dollars Following is a Case study of Qatar Petroleum, which shows a huge saving of costs because of Condition Monitoring: Case Study: 141. K0302 FLUE GAS FAN Current Drawn before balancing the Fan: 83 Ampere Current drawn post balancing the fan : 76 Ampere Net Current reduction: 7 Amps (Hourly Average) Power Saving = à ¢Ã‹â€ Ã… ¡3 x V x I x Cos  ¢ à ¢Ã‹â€ Ã… ¡3 x 11 x 7 x 0.85 KWh Annual Cost Savings = 113.3X0.081X24X365 (Power Cost = 0.081QR/Kwh) = 80393 QR/Year Last Six Months Predicted Failures at Qatar Petroleum Standards used for condition monitoring (Source: http://www.iso.org) ISO 13381-1:2004 provides guidance. The basic purpose is to: Let the clients, manufacturers of condition monitoring and diagnostics systems to share general thoughts in the fields of machinery error analysis. Allow users to determine the essential information, characteristics and behaviour necessary for accurate estimate. Outlines an appropriate approach to predict development. Introduces predictions concepts in order to ease the development of future systems and training. ISO 18436-6:2008: Condition monitoring and diagnostics of machines Prognostics Part 1: General guidelines ISO 18436-6:2008 states the needs for qualification and evaluation of personnel who perform machinery condition monitoring and diagnostics using acoustic production. A certificate or declaration of conformity to ISO 18436-6:2008 will provide credit of the qualifications and ability of individuals to perform acoustic production measurements and analysis machinery condition monitoring using acoustic emission equipment. This procedure may not apply to particular equipment or other explicit situations. ISO 18436-6:2008 specifies a three class classification programme. ISO 18434-1:2008 provides an introduction to the application of infrared thermography (IRT) to machinery condition monitoring and diagnostics, where machinery includes machine auxiliaries such as valves, fluid and electrically powered machines, and machinery-related heat exchanger equipment. In addition, IR applications pertaining to machinery performance assessment are addressed. ISO 18434-1:2008: introduces the terminology of IRT as it pertains to state checking and diagnostics of machines; explains the types of IRT procedures and their qualities; provides leadership on establishing cruelty appraisal criteria for anomalies identified by IRT; outlines methods and requirements for carrying out IRT of machines, including safety suggestions; provides information on data understanding, and appraisal criteria and reporting requests; provides measures for determining and compensating for reflected obvious temperature, emissivity, and attenuating media. ISO 18434-1:2008 also includes testing procedures for determining and recompense a reflected obvious temperature, emissivity, and attenuating media when measuring the exterior temperature of an aim with a quantitative IRT camera. ISO 18436-3:2008: Condition monitoring and diagnostics of machines Requirements for qualification and assessment of personnel Part 3: Requirements for training bodies and the training process ISO 18436-3:2008 defines the requirements for operating training programmes for personnel who carry out machinery condition monitoring, recognize machine faults, and propose corrective action. Procedures for training of condition monitoring and diagnostic personnel are specified. ISO 18436-7:2008  : Condition monitoring and diagnostics of machines Requirements for qualification and assessment of personnel Part 7: Thermography ISO 18436-7:2008 specifies the requirements for qualification and assessment of personnel who perform machinery condition monitoring and diagnostics using infrared thermography. An official document or declaration of conventionality to ISO 18436-7:2008 will provide recognition of the qualifications and competence of individuals to do thermal measurements and investigate machinery condition monitoring using moveable thermal imaging equipment. This procedure may not apply to particular equipment or other precise situations. ISO 18436-7:2008 specifies a three category classification programme. ISO 13373-1:2002  : Condition monitoring and diagnostics of machines Vibration condition monitoring Part 1: General procedures ISO 13373-2:2005  : Condition monitoring and diagnostics of machines Vibration condition monitoring Part 2: Processing, analysis and presentation of vibration data ISO 13373-2:2005 recommends actions for dealing out and presenting vibration data and analysing vibration signatures for the reason of monitoring the vibration state of rotating machinery, and performing diagnostics as suitable. Different methods are described for different applications. Signal improvement techniques and analysis methods used for the investigation of exacting machine dynamic phenomena are included. Many of these techniques can be applied to other machine types, as well as reciprocating machines. Example formats for the parameters that are commonly plotted for valuation and diagnostic purposes are as well given. ISO 13373-2:2005 is divided basically into two essential approaches when analysing vibration signals; the time domain and the frequency domain. Some approaches to the modification of diagnostic results, by changing the operational circumstances, are also covered. Pump Performance and the Effect of Wear Pumps wear as they are used but their efficiency can be maintained by Condition monitoring and accordingly refurbishment: [Figure-13: Effect of wear on pump characteristics] Source: http://re.jrc.ec.europa.eu/solarec/index.htm (European commission Joint Research Center) [Figure-14: Average wear trends for maintained and unmaintained pumps] Source: http://re.jrc.ec.europa.eu/solarec/index.htm (European commission Joint Research Center) Effect of internal wear on pump performance The effect of Internal wear on pump is dependent on type of Pump . Slurry pumps are Designed to cope with erosive liquids. Total operating cost can be reduced by improving wear life. Wear is increased by High Velocity, large solid size and high concentration. Chapter -6: Performance Analysis and Testing of Pumps for Condition Monitoring The aims of testing a systems pump performance are to: Record system pumps performance. Verifying the impeller size at present installed in the pump. Launch the system curve for the pumping system. Establish the operating point of the pump; i.e. the point where the pumps impeller curve intersects the system curve with the discharge valve throttled and with the discharge valve fully open. Measures the match between full flow flow delivered by the pump with the discharge valve fully open and the real plan flow requirement. Considers the implications of throttled discharge valves and opportunities to open discharge valves and adjust pump performance by means of trimming the impeller, changing the motor to get an incremental motor/pump speed change or installing a VFD to change the motor/pump speed to a non-incremental value. The objective of all of these modification techniques is to provide design flow without the head forced by the throttled valve. As a consequence, the system will advantage from reduced pump energy use and operating costs. Considers the flow variations produced in the system as different active elements are repositioned by their control processes. becomes aware of and make a diagnosis of other control or performance problems. Performance analysis needs performing data Temperature Pressure Flow Speed Power Efficiency Calculation [Figure-15: Pumps in System and relationship to Condition Monitoring] Chapter -7: Performance Analysis and its Application to Optimize Time for Overhaul The head test at Duty Point Like it is known that condition monitoring is used as a tool for Predicting maintenance requirements of pumps. The Head Flow examination is the essential way can be used to inspect assumed poor performance. (http://www.engineeringnet.be) Head flow measurement is a useful type of condition monitoring because it checks pump deterioration and also shows flaws in system resistance.. (Heinz P. Bloch) It is easier to determine the head. alter in volume according to the time can be easily measured if an appropriate vessel i

Essay --

Zach Dulac Professor Ady Media Analysis 2 December 2013 Legal Monopolies’: Go Directly to Jail, Do Not Pass Go, and Give me back my 200$ The Trans-Pacific Partnership is a secretive bill instituted by the U.S. Government in order to allow transnational corporations the control over not only our wallets, but also our health. The TPP’s intent is a proposed trade agreement, which would create the largest regional free trade agreement established in the world today. The twelve countries currently included are the U.S., Japan, Australia, Peru, Malaysia, Vietnam, New Zealand, Chile, Singapore, Canada, Mexico, and Brunei Darussalam. Together they are estimated to account for about 40% of the world’s GDP. Free trade is a system in which removes restrictive barriers such as tariffs in order to create open markets between the countries involved. The concept of free trade is appealing to most American’s considering the state of our economy over the past five years. However, the United States has been quite secretive in releasing the contents of this agreement. Shortly before a negotiation in Salt Lake City , WikiLeaks released the contents of the agreement over its website⎠¯ revealing the reason behind the secrecy. Out of twenty-nine chapters, trade is only discussed in five of them. The TPP is an agreement, in which is intended to allow transnational corporations the ability to globally control our food, our medicine, and the Internet in order to increase their companies profit maximization. International trade has always been a pivotal part of the prosperity of the United States economy over the last fifty years. Free trade is simply international trade without tariffs, quotas, or other restrictions. It builds onto the platform of our... ...at copied and sent to the patent â€Å"enforcers†. If caught doing this three times, ones Internet access would simply be cut off. The TPP is an agreement, in which is intended to allow transnational corporations the ability to globally control our food, our medicine, and the Internet in order to increase their companies profit maximization. The U.S. government is pushing to increase patents not only in the U.S., but also around the globe. These patents vastly negatively impact our food industry, our health industry, and our Internet freedom. The outrageous mislabeling of Trans-Pacific Partnership is not about trades; it’s about stacking the wallets of the wealthy for years to come, at the expense of our global society. They should have added a subtitle underneath⎠¯ The Trans-Pacific Partnership: where your human necessities are moneymaking recipes for CEO executivE’s.

Night :: essays research papers

In 1944, in the village of Sighet, Romania, twelve-year-old Elie Wiesel spends much time and emotion on the Talmud and on Jewish mysticism. His instructor, Moshe the Beadle, returns from a near-death experience and warns that Nazi aggressors will soon threaten the serenity of their lives. However, even when anti-Semitic measures force the Sighet Jews into supervised ghettos, Elie's family remains calm and compliant. In spring, authorities begin shipping trainloads of Jews to the Auschwitz-Birkenau complex. Elie's family is part of the final convoy. In a cattle car, eighty villagers can scarcely move and have to survive on minimal food and water. One of the deportees, Madame Schà ¤chter, becomes hysterical with visions of flames and furnaces. At midnight on the third day of their deportation, the group looks in horror at flames rising above huge ovens and gags at the stench of burning flesh. Guards wielding billy clubs force Elie's group through a selection of those fit to work and those who face a grim and improbable future. Elie and his father Chlomo lie about their ages and depart with other hardy men to Auschwitz, a concentration camp. Elie's mother and three sisters disappear into Birkenau, the death camp. After viewing infants being tossed in a burning pit, Elie rebels against God, who remains silent. Every day, Elie and Chiomo struggle to keep their health so they can remain in the work force. Sadistic guards and trustees exact capricious punishments. After three weeks, Elie and his father are forced to march to Buna, a factory in the Auschwitz complex, where they sort electrical parts in an electronics warehouse. The savagery reaches its height when the guards hang a childlike thirteen year old, who dies slowly before Elie's eyes. Despairing, Elie grows morose during Rosh Hashanah services. At the next selection, the doctor culls Chlomo from abler men. Chlomo, however, passes a second physical exam and is given another chance to live. Elie undergoes surgery on his foot. Because Russian liberation forces are moving ever closer to the Nazi camp, SS troops evacuate Buna in January 1945. The Wiesels and their fellow prisoners are forced to run through a snowy night in bitter cold over a forty-two mile route to Gleiwitz. Elie binds his bleeding foot in strips of blanket. Inmates who falter are shot. Elie prays for strength to save his father from death. At a makeshift barracks, survivors pile together.

The Life of Karl Marx Essay -- Biography Biographies Karl Marx Essays

The Life of Karl Marx Karl Marx was the co-author of The Communist Manifesto, along with Friedrich Engels. The Communist Manifesto is a pamphlet that was written to let the public know how the working class was being treated, and to try to get rid of the class system that existed at the time. Marx believed that many of the workers throughout England were not being treated fairly and that something needed to be done about it. Marx explains, â€Å"The history of all hitherto existing society is the history of class struggles.† 1 He continues on to talk about how while looking at human history you ought to not just look at great individuals or great conflicts, but instead look more at social classes and the struggles in which they go through. Karl Marx led a very long and meaningful life that will always be looked at in great light. The Communist Manifesto and Karl Marx greatly impacted change of society throughout the twentieth century. 2 Karl Marx was born on May 5, 1818 in Trier, Rheinish, Prussia. Marx's father, Heinrich, was a lawyer, and his mother was Henriette Pressburg. He was second of eight children. The family was originally Jewish, which it was reported that he was not practicing Jew. Marx's father eventually changed the families religion to Protestant, so as to avoid anti-Semitism. At the age of seventeen he attended the University of Bonn, where he decided to studied law just like his father. Soon enough his father pulled him out of Bonn because of his poor grades and his injury in a duel. After paying off Marx's debts his parents then made him transfer to The University of Berlin. Here he became a little more interested in his studies and also got to know his professors a little better. One of the mos... ...s outlook, relationships both to other men and to physical nature, with which man is in perpetual physical and technological metabolism.† 8 End Notes 1) Berlin, Isaiah, Karl Marx: His life and Environment (New York: Oxford University Press, 1978). 2) Avineri, Shlomo, The Social and Political Thought of Karl Marx (New York: Cambridge University Press, 1968). 3) "Karl Marx" Education on the Internet and Teaching History Online, <http://www.spartacus.schoolnet.co.uk/TUmarx.htm> (12 February 2002) 4) "The Karl Marx Page" Sociology at Hewett <http://www.hewett.norfolk.sch.uk/curric/soc/MARX/Marx1.htm> (12 February 2002) 5) Blumenberg, Werner, Portrait of Marx (New York: Herder and Herder New York, 1972). 6) Avineri 7) "The Karl Marx Page" (all pictures from this website) 8) Berlin

American Connector Company Essay

American Connector Corporation makes electrical connectors at a plant in Sunnyvale, California. With applications from military, aerospace to consumer electronics and appliances, there is great difference in terms of specifications also. Standard designs were established by International Institute of Connectors and Interconnect Technology, the National Electronics Distributors Association or by the end user. There is rumor of entry of DJC Corporation of Japan which was a dominant supplier of electrical connectors in Japan. DJC had not established itself in the US as it had no plants in the US and but a small sales force. This created problem for ACC who also had problems of their own with regard to Sunnyvale plant where costs were increasing and quality of production was decreasing. Threat of DJC to American Connector Company Due to the operational excellence that DJC has, ACC should be extremely concerned with their entrance to the US. DJC will be willing to operate at smaller margins to capture the market share. The intensity of the market competitiveness can result in compounding of the threat of the lower prices. ACC will have a limited amount of time for the realization of this threat and to evaluate the next course of action. Main threat to ACC from DJC comes from the operational efficiency and static cost difference and hence disregarding the arrival of unnerving competitor like DJC can immediately disrupt ACC’s pricing strategy and long term profitability. Following factors reinforces the threat of DJC to ACC- (1) Lower Material products cost – Following table shows that cost incurred by DJC as compared to ACC is lower in both the years 1986 and 1991. In 1986, DJC had 7% more COGS incurred as compared to ACC while at the end 1991, they were reduced by 40%. If DJC sets up manufacturing base in US Landscape, there will be substantial raw material cost reduction for DJC as compared to ACC. (2) Lower defect rate and greater efficiency- The quality losses for ACC is 1.6% against 0.7% of DJC. The defect rates at Sunnyvale’s are as high  as 26000ppm of production and its quality control is end product inspection as compared to process centric quality control in DJC. (3) Higher Fixed Asset utilization- The effective utilization of fixed assets (in %) for DJC is 75.4% as compared to mere 30.2% of ACC. (4) Lower Work In process inventory- Kawasaki Plant of DJC had processing lead times and work-in-process inventories averaging for only two days against high inventory levels of ACCâ⠂¬â„¢s Sunnyvale Plant. (5) Lower Raw Material Inventories- The raw material inventories of ACC averaged for 10.8 days which is more than double than DJC’s average of only 5 days, which in results in less inventory cost and reduced finished good cost. (6) Higher responsiveness to customer order delivery- Because of highly automated production process at Kawasaki plant of DJC, the speed of order delivery is one day whereas ACC works on batch production process which produces about 4,500 varieties of connectors, hence they have more than one day However, DJC will face a number of challenges in implementing its Kawasaki Factory model in USA which are mentioned below- (1) Customer Contacts- DJC would not be able to leverage its strength to the fullest in USA as it would have to compete in a new market with no major contacts. (2) Flexibility of Production process- Batch production process of ACC renders it great flexibility in terms of customization of products to its customers as compared to DJC. (3) Production and Inventory Control- There are 700 standard connector product lines in North America alone and ACC makes 4500 SKU’s and some product lines were run on almost continuously basis. So it would be very difficult for DJC to be able to maintain such long run times when they need to produce almost 8 times the number of varieties of connectors they produce at Kawasaki. (4) Finished Goods Inventory- DJC carries 56 days of finished goods inventory as compared to 38 days of ACC and given the short life cycles of electronics, DJC faces high risk of being obsolete. (5) Demand Variability- DJC’s product oriented layout operated on high volumes and low variety production, thus reducing costs. However USA does not have a certain demand for such high volume products. How big are the cost differences between DJC’s plant and ACC’s Sunnyvale plant? Consider both DJC’s performance in Kawasaki and its potential in the United States. To study the cost difference between DJC’s Plant and ACC’s  Sunnyvale plant, we need to remember the important fact that the two plants operate in an entirely different scenarios (Countries). Thus in order to bring in a direct comparison between the two the cost indices between United States and Japan in 1991 comes very handy. The various indices that compare Japan with US are given in the foll owing table Cost Indices (Us to Japan)

Saint Columba Altarpiece

The painting depicts the prediction of the birth of Jesus and how it came to pass. This happened after the visitation of angel Gabriel to Mary, who was a simple and humble Jewish woman. The angel broke the news to Mary that she had found favor with God, and she will conceive and give birth to a son, Jesus. He further elaborated that Jesus would be the son of God, the most high. At this point, Mary was totally confused and worried about the abrupt news but she later consoled herself and said since she was God's servant, she will do as he says. Moreover, Mary was betrothed to a man called Joseph, who lived in Nazareth. During this time, a Roman emperor, Caesar Augustus had ordered a census and both Mary and Joseph had to travel to the town of Bethlehem. The journey took them several days and by the time they arrived, the inn was already full and they were compelled to spend their night near the livestock's shed. Coincidentally, Mary gave birth to Jesus and laid him in a manger. In the same night, there were shepherds in the field near Bethlehem and were watching over their flocks. Suddenly, the angel appeared to them and broke the good news to them that savior, the Messiah had been born and is lying in a manger. (Freed, Edwin D 2004). They immediately hurried to the place and found Jesus as they were directed. They later went to spread the news. Later, wise men saw a star in the sky that signified the birth of a new king. They followed it to the place where Jesus was and knelt down to worship him. They brought him gifts of gold, myrrh, and frankincense. According to Mosaic laws, Jesus was taken to the temple where he was named, circumcised and purified. This was conducted by Simeon. During the visitation of Jesus by wise men, the gifts were used as a symbol of honor to the born king. Joseph was a simple village man who lived in Nazareth. He was chosen by God to be the earthly father of Jesus. He was a carpenter and had gathered exceptional skills in craft work. He feared God and he would obey him in face of severe humiliation. He came from a humble background and this subjected him to engage in carpentry. Also, Joseph was a man of strong conviction and lived his beliefs in his actions. He is celebrated for his obedience and patience even after Mary, his fiancà © gave birth to Jesus although she was a virgin. Jesus was regarded as an artist because he used to give verbal, visual and dramatic forms to the complicated situations. He taught the word of God by giving analogies, parables, and creative expressions. According to the gospels, his birth took place on November of 5 B.C at Bethlehem. After he completed his work on earth, he died on A.D 33 at a place called Golgotha. He was known for using parables in his teachings. (John P. Meler 1992). The original location of his artwork was first meant to be viewed in synagogues, where he presented various sermons. Moreover, this artwork was religious and was meant to make his followers think critically so as to understand the word of God fully. Also, they were used as a means of illustrating profound and divine truths. He claimed that such stories were easily remembered and indicated symbolism that was rich in meaning. He further told his disciples that the essence of using parables is because the knowledge of the secrets of the kingdom of heaven has been given to them. According to Michael Grant, the entire artwork can be traced back to Gospel period where absolute chronology of Jesus is explained into details. Further, this historical period is recorded in a number of historical and non-Christian documents like Jewish and Greco-Roman sources. Further information indicated that the baptism and crucifixion of Jesus marked prominent historical events. This period simply means the genesis of the good news and it cut across various groups of people. During this period, Jesus started his ministry, which was later considered as fulfillment of New Testament prophecies. He walked down all cities along with his disciples preaching the gospel and urging the people to repent so as to see the kingdom of God. This took him the whole of his lifetime on earth. During this period, he faced mockery and humiliation from some groups although he had a good number of followers. According to Ben Witherington III, the artwork was made to make the Christians understand that those who humble themselves, God uplifts them. This is portrayed when Virgin Mary, a simple village woman was visited by an angel and informed her of good news. Later, the birth of Jesus in the manger indicated the humble beginning of his life. It also expressed that Jesus was the king since he was visited by various people who came to worship him. Also, Christians should understand the need of recognizing the church as the temple of God. Even the parent of Jesus observed mosaic laws and took him to the temple for various rituals. Therefore, Christians should follow the footsteps of Jesus by obeying the word of God.Works CitedBen Witherington III. (1998). â€Å"Primary Sources†. Christian History, 17(3), 12-20.Freed, Edwin D (2004). â€Å"Stories of Jesus' Birth†. Continuum International: 119. John P. Meler (1992).Bordering Jew on Reconsidering the Historical Jesus. â€Å"A Chronology of Jesus Life,† pp. 375-433. Anchor Bible Reference Library. Michael Grant. (1977). Jesus. An Historian's Review of the Gospels, p.71 Scribner's

Viscosity

Viscosity of Liquids Part I: Low Viscosities Mona Kanj Harakeh 1 Objectives †¢ To measure and analyze the viscosities of ideal (Toluene/p-Xylene) and nonideal (Methanol/Water) binary solutions and their components. †¢ To determine the Activation Energy to viscous flow. †¢ The effect of temperature change on the viscosity will be studied. Method: The viscosities of liquids are determined by measuring the flow time for various liquids in an Ostwald viscometer. 2 Ostwald viscometer 3 Viscosity †¢ The resistance of a liquid to flow is called its viscosity Viscosity is a property of liquids that is important in applications ranging from oil flow in engines to blood flow through arteries and veins. Measuring viscosity †¢ How long a liquid takes to flow out of a pipette under the force of gravity. †¢ How fast an object (steel ball) sinks through the liquid under gravitational force. 4 Molecular properties contributing to viscosity Viscosity arises from the dire cted motion of molecules past each other, it is a measure of the ease with which molecules move past one another. It is affected by many factors such as: †¢ Molecular size. Molecular shape. †¢ Intermolecular interactions (attractive force between the molecules). †¢ Structure of the liquid itself. †¢ Temperature(Viscosity decreases with increasing temperature the increasing kinetic energy overcomes the attractive forces and molecules can more easily move past each other). 5 Viscosity ? The IUPAC symbol of viscosity is the greek symbol eta â€Å"? †. ? Viscosity â€Å"? † of a fluid is its resistance to flow. ? When a Liquid flows, whether through a tube or as the result of pouring from a container. Layers of liquid slide over each other. The force (f) required is directly proportional to the Area (A) and velocity (v) of the layers and inversely proportional to the distance (d) between them. Av Equ. 1 f fd gcms cm ? ? gcm ? 1 s ? 1 ? 1 piose ? 1P Av cm 2 cms ? 2 ?2 d unit of viscosity 6 Viscosity Units The unit of viscosity is the poise named after Poiseuille Jean Louis Marie. It is most commonly expressed in terms of centipoise â€Å"cP†. The centipoise is commonly used because water has a viscosity of 1. 0020 cP at 20oC; the closeness to one is a convenient coincidence. The SI unit of viscosity is Pascal-second (Pa ·s) = N ·s m–2 or Kg m-1 s-1. †¢ In cgs unit 1 Poise â€Å"P† = 1 g. cm-1. s-1 (dyne . s) 10-2 Poise â€Å"P†= 1 centipoise â€Å"cP† 1 Pa. s = 103 cP 10 P = 1 Kg ·m? 1 ·s? 1 = 1 Pa. s 1 cP = 0. 001 Pa. s = 1 mPa. s †¢ The conversion between the units: 1 P = 0. 1 Pa. s For many liquids at room temperature the viscosity is very small 7 (0. 002-0. 04) therefore (10-2 P), centiP is often used. Ostwald Method †¢ Time for fixed volume V of liquid to fall through a capillary into a reservoir Upper Fiducial mark – Depends on density. – Depends on visc osity. Reference liquid is used. †¢ This type can be used for liquids of viscosity up to 100 poise. Lower Fiducial mark 8 Ostwald Method The rate of flow R (cm3/sec) of a liquid through a cylindrical tube of radius r and length l under a pressure head P is given by the Pousille equation. Equ. 2 Measurement of P, r, t, V, and l permits the calculation of the viscosity: Equ. 3 It is easier to measure the viscosity of a liquid by comparing it with another liquid of known viscosity. Since P = ? gh Equ. 4 The viscosity of a solution can be determined relative to a reference liquid (de-ionized H2O). 9Oswald viscometer The Oswald viscometer is a simple device for comparing the flow times of two liquids of known density. If the viscosity of one liquid is known, the other can be calculated. Ostwald viscometer is used to measure the low viscosities’ liquid. After the reservoir is filled with a liquid, it is pulled by suction above the upper mark. The time required for the liquid t o fall from mark 1 to mark 2 is recorded. Then the time required for the same volume of a liquid of known viscosity to flow under identical conditions is recorded, and the viscosity is calculated with Equation ? ? ? k? Equ. 5 ? ? ( r ) ? t ? r tr Where â€Å"r† refers to the viscosity, density and flow time for a reference liquid, usually water. Therefore it is important to do set of measurements of known liquid and at controlled temperature. 10 Fluidity Equ. 6 †¢ The reciprocal of viscosity is fluidity, F ? ? †¢ The concept of fluidity can be used to determine the viscosity of an ideal solution. †¢ One particular advantage for fluidity is that the fluidities of mixed binary solutions of liquids a and b are approximately additive. So if each pure liquid has fluidities Fa and Fb, the fluidity of a mixture is given by: where ? a and ? b is the mole fraction of component a and b respectively, †¢ Fluidity equation is only slightly simpler than the equivalent e quation in terms of viscosity  µ = ? : Equ. 8 †¢ where ? a and ? b is the mole fraction of component a and b respectively, and ? a and ? b are the components of pure viscosities. †¢ The viscosity of the mixture is not linear 11 Kendall proposed another approach for expressing the viscosity of a mixture: ln? ? ? A ln? A ? ? B ln? B Equ. 9 Where xA and xB are the mole fractions of component A and B respectively, and ? A and ?B are the components as pure viscosities. The above equation is valid for the Ideal Solutions such as Toluene/p-Xylene in which the interaction energies between the components are the same as those between the pure components. The failure of component fluidities to be additive in the mixed state arises, then, either from the formation of association complexes between the components or from the destruction of such complexes that may be present in the pure components after the pure components are mixed. Under this circumstance the following equations wou ld not be valid: and ln? ? ? A ln?A ? ? B ln? B 12 Temperature Dependence of Viscosity †¢ Over a reasonably wide temperature range, the viscosity of a pure liquid increases exponentially with inverse absolute temperature. †¢ This relation was first expressed quantitatively by Arrhenius E? (1912). ? ? A exp( †¢ Where A is a constant for a given liquid and E? is the activation energy of viscosity. †¢ The transported molecules should overcome the activation energy in order to overcome intermolecular attractive forces. RT ) Equ. 10 †¢ A plot of ln ? against 1/T (Arrhenius plot) should be linear and have a slope equal to E? R. E ln ? ? ln A ? ? Equ. 9 RT 13 Experimental †¢ To measure the viscosity by Ostwald method, A liquid is allowed to flow through a thin-bore tube (< 1 mm) then the flow rate is determined and the physical dimensions for the tube should be known exactly. †¢ Ostwald viscometer should be calibrated with a reference liquid therefore the radius and Length of the viscometer can be known precisely. †¢ Operationally, the experiment is done by measuring the time required for a given volume of liquid to flow through the viscometer capillary. †¢ The driving force is the gravity. Ostwald viscometer is designed to keep the height of the separation of the upper and lower levels of the flowing liquid as constant as possible. 14 Calibration of the Ostwald Viscometer †¢ Ostwald viscometer is calibrated using 10 mL of purified water. The flow rate, density and known viscosity of purified water are used to calculate k. Measurement of viscosity of different solutions †¢ The viscosity of two mixed solutions with different percentages of liquids will be measured using Ostwald method. Chemicals Molar Mass(g/mol) Molecular Formula Methanol 32. 04 CH O Toluene 92. 4 CH A- Toluene/p-xylene p-Xylene 106. 16 CH Water 18. 02 HO B- Methanol/Water †¢ Measure the viscosity for each pure liquid then measure the viscos ity 20%, 40%, 60% and 80% percentages by volume. 4 7 8 8 10 2 15 Procedure: Suspend the viscometer into a large beaker (2-L) of water that is placed on a hot plate, that is as close to 25 ° C as possible. Make sure the viscometer is fully immersed in the water. 1. Pipette 10 ml of de-ionized water of known density into the Ostwald viscometer and allow time for the liquid to equilibrate to the temperature of the bath.Then use a pipette bulb to push or pull the liquid level up above the upper fiducial mark on the viscometer. Allow the water to run back down and start the timer exactly as the meniscus passes the upper mark. Stop the timer just as the meniscus passes the lower mark. Repeat at least twice. Your flow times should agree to within about 0. 4 seconds. 2. Clean and dry the viscometer by running a few milliliters of acetone through it. Drain the acetone and aspirate for about a minute to evaporate all the acetone. 3. Determine the flow times of each of your methanol/water 16 solutions at 25 ° C. Procedure: cont’d . Complete the series by measuring the flow time for pure Methanol. Repeat each at least twice. Your flow times should agree to within about 0. 4 seconds. 5. Clean and dry the viscometer as before. 6. Determine the flow times of each toluene/p-xylene solution as in step 3. End the determinations with the pure p-xylene. 7. For our temperature work heat the water bath in roughly 5 to 10 degree increments and determine the flow time of the pure pxylene as before at each temperature. Make sure that the temperature is constant. The exact temperature is not important as long as it is known to  ± 0.  °C, and that the viscometer has had time to equilibrate to a new temperature. Stop at about 60 ° C. 17 Table Data 1: The flow times of each of ( methanol/water) and (toluene/p-xylene) solutions at 25oC %by volume 100% water 20% methanol 40% methanol 60% methanol 80% methanol 100% methanol Flow time (1) (s) Flow time (2) (s) Flow time (3) ( s) Average Flow time (s) 100% p-xylene 20% toluene 40% toluene 60% toluene 80% toluene 100% toluene 18 The flow times of methanol at different temperature: Table Data 2: The flow times of p-xylene at different temperature.Temperature Flow time (1) (s) Flow time (2) (s) ( °C) 25 30 35 40 45 50 55 60 65 Flow time (3) (s) Average Flow time (s) 19 Viscosity Table of Results 1: Methanol, volume % 0% Methanol Methanol , weight % The flow times of a series of Water/Methanol solutions that are 0,20,40,60, 80, and 100% by volume. Average Flow time, t (sec) viscosity, ? (cP) ? ? k? t Fluidity F ? Density, ? (g/mL) ? 1 100% Water 20 40 0 density of H2O 0. 99704 0. 971 0. 944 ? of H2O 0. 8904 16. 54 34. 57 60 80 100 54. 33 76. 02 100 0. 909 0. 859 0. 788 20 Density of Methanol/Water Mixtures at 25 0CViscosity Table of Results 1: Cont’d %by volume Densi Mole fraction ln? ? ? ln? ? ? ln? A A B B ty (g/ml ) 0. 997 0. 971 0. 944 0. 909 0. 859 0. 788 Xwater =1 Xwater= Xmethanol= Xwater= Xme thanol= Xwater= Xmethanol= Xwater= Xmethanol= Xmethanol=1 viscosity ? (cP) Fluidity F ? ? A FA ? ? B FB 100% water 20% methanol 40% methanol 60% methanol 80% methanol 100% methanol 21 Viscosity Table of Results 2: The flow times of a series of toluene/p-xylene solutions that are 0,20,40,60, 80, and 100% by volume. Density, ? (g/mL) Average Flow time, t (sec) Viscosity, ? (cP) ? k? t Toluene, volume % Fluidity F ? ? 1 0%Toluene (100% pxylene) 20% Toluene 40 60 80 100 0. 857 0. 858 0. 859 0. 859 0. 960 0. 861 Density of Toluene/p-Xylene Mixtures at 25 °C 22 Viscosity Table of Results 2: Cont’d %by volume 100% pxylene 20% toluene 40% toluene 60% toluene 80% toluene 100% toluene Densit y (g/ml ) 0. 857 0. 858 0. 859 0. 859 0. 960 0. 861 Mole fraction ln? ? ? A ln? A ? ? B ln? B viscosity ? (cP) Fluidity F ? ? A FA ? ? B FB Xp-xylene =1 Xtoluene = Xp-xylene = Xtoluene = Xp-xylene = Xtoluene = Xp-xylene = Xtoluene = Xp-xylene = Xtoluene =1 3 Table of Results 3 : T(oC) 20 25 D (g mL-1) 0. 879 0. 857 ln ? vs. 1/T ln ? T(K) 1/T Average ? Flow time, ? ? k? t t (sec) 30 35 0. 852 0. 848 40 45 0. 943 0. 839 50 55 0. 834 0. 830 60 0. 825 24 1. Determine the viscosity coefficient for the methanol/water solutions and toluene/p-xylene solutions using equation ? ? k?. t Calculate Fluidity using equation ? 2. Calculate viscosity ? for the above solutions using equation ln? ? ? A ln? A ? ? B ln? B Calculate Fluidity using equation for all above solutions using equation F ? ? A FA ? ? B FBData Analysis F ? 1 3. Compare the viscosity of the methanol/water mixtures to the toluene/pxylene mixtures by graphing the value of the viscosity coefficient (? ) versus the volume percentage of each mixture. Comment on the shape of the graphs. Comment on the â€Å"ideality† of the two solutions. 4. Next look at the dependence of viscosity of p-Xylene on temperature. Plot ln ? vs. 1/T and determine the activation energy and the error in the activation energy. (Use Excel to get t he error in the slope and use it in a simple propagated error analysis) 25