Metal powder bed additive manufacturing (AM) methods Essay

Metal powder bed additive manufacturing (AM) methods - Essay Example The paper tells that the method of selective laser sintering was carried out first by use of nylon combined with polymers when a need arose to have assistance of audio-visual prototypes and the fit-to-form research tests that were previously conducted. This process received considerable research and as a result, it was further expanded to incorporate metals and subsequently got into alloys that were used in the production of functional prototypes and also in the process of developing rapid tooling procedures. The past practices have seen the status of SLS reconsidered based on rapid prototyping approaches, SLM with the use of phosphorous during the binding mechanism, post-processing that involved parts that were laser-sintered, metals that have undergone direct selective laser sintering, rapid tooling application, and consideration of materials that have been put to use. Substantial research has thus been done in this area and many publications made. This could be attributed to the u sefulness of the technology, its commercial viability, and the kind of broad application that it has found. The technology also has evolved to include the Electron Beam Melting, which is a technology that incorporates building parts laying layer-by-layer by use of metal powder through application of powerful beams of electron. Initially, powder-based AM manufacturing processes did construct various layers made up of plastic and metallic materials that dispersed powders on a given set substrate. These were liquid based processes. AM is also based on the same principle but curing is done by the UV light. The advancements in these technologies have made the AM be of greater use in many industries including fabrications, biomedical, and repairs of metallic forms of components since they have the capacity to deposit metal matter on set substrates (Kruth, et al., 2003, pp.357–371). 2.0 Introduction There has been a considerable increment in new and sophisticated technologies in onl y a span of 20 years. These sophisticated technologies and the innovations have been able to produce some complex and freeform solids (Shiomi, et al., 1999, pp.237–252). Besides, the different additive or subtractive techniques are evolving quite fast into rapid manufacturing processes in the cases of mass-customized goods, which have taken a deviation from the rapid prototyping processes (Mercelis & Kruth, 2006, pp.254–265). The intermitted measurements of those components that have been fabricated through the process of additive manufacturing (AM) have the capacity to boost the in-process improvement as well as change the characterization related to the internal geometrics of materials. These AM processes do take into account the planar layer. The layer-upon-layer aspect of various processes involving AM techniques has the ability to incorporate very simple measurements of two-dimensional nature (Mercelis & Kruth, 2006, pp.254–265). This is attributed to the f act that the current layer of the parts used is focused on a continuous basis when it comes

Report and Accounts for Tesco PLC Essay Example | Topics and Well Written Essays - 1000 words

Report and Accounts for Tesco PLC - Essay Example The report provided shows an insight of supermarket sector, the emphasis majorly being on the analysis of its finances, competence, resources and culture. There are two options on future strategies that are suggested regarding financial strategies.This company is amongst the biggest in the globe, vested in operations in approximately 2,318 outlets and has employed over 320,000 employees. It also offers services only via its subsidiaries. The United Kingdom is its largest market, in which it runs in four ways superstore, extra, express and metro. The firm’s own labels of products are categorized under three levels inclusive of normal, finest and value. The firm makes sales of approximately 40,000 products of food inclusive of clothing and some other lines that do not deal in food stuff. Apart from convenient products, many stores contain gas stations, making them amongst the largest independent retailers of petrol in Britain. Other services offered by Tesco include personal fin ance. The main reason for the success of Tesco is the various products they deal in, popular products and the brand preferences. Furthermore, Tesco operate online sales of product which has seen them expand internationally and get customers all over the world. There are reasons as to why Tesco is customers’ favorite store in the UK. Tesco have got a well analyzed capital structure which supports the growth of business plan with consideration of their expertise in financial system and cash management. Financial Analysis In Britain, Tesco services offered by this firm are via Tesco bank. The main products offered are inclusive of mortgages, credit cards, savings accounts, and loans. They also offer insurance services like insurance on cars, travel and life. The awareness of these services is boosted by their website and leaflets given out in their stores. Tesco generated a profit worth 130 M pounds in 2007 which rated the value of shares at 66 M pounds. The impact that this mov e created towards the sector of finance brought diversification to the brand of Tesco. It also provided for growth opportunities in the external retail sector.In 2008, announcement was made on of purchase of 50% of its shares. In the year 2009, Tesco Finance changed to a bank. Other financial service was the intent to buy Dobbies Garden. This enterprise owns 28 gardens, almost half in the UK. In 2007, the deal had been sealed by BODs of Tesco on receivership of 53% of shares meeting the conditions that were set. This led to Tesco’s shares rising to 65% and in 2008, the acquisition was fully met. Tesco commenced selling of petrol in the year 1974.The main sources of finance for Tesco plc is long term debts, retained profits, commercial paper, leases, issues and bank borrowings.By the year 2006, Tesco was rated fourth biggest retailer after Carrefour, Wal-Mart, and Home Depot. In 2007, this firm managed to jump Home Depotdue to the sale of division of Depot’s professiona l supply and fall in value of US dollar on Britain pound. Immediately behind was Metro which may also make its way ahead in case the euro becomes stronger against pound. Though, Metro has its sales inclusive of wholesale turnover in terms of billions and its turnover in regard of retail is less than that of Tesco’s.Instead of Tesco increasing its revenue by way of increasing its leverage, they take

Problem gambling Essay Example for Free

Problem gambling Essay Gambling is something that people are capable of enjoying once in a while, but for others it can turn into an activity that is hard to control. Gambling is the act of risking money, property, or something of value on an activity that has an uncertain outcome. This can include, lotteries and bingos, card games, going to casinos, buying multiple kinds of tickets, making bets, and games such as pool, golf, or arm wrestling. Gambling can be legal as well as illegal, any sort of gambling managed by the government or by regulations set by the government is legal, and any sort of gambling that is not managed by regulations is illegal. Gambling doesn’t have one specific cause, and the cause can be different for everyone. People who have bipolar disorder, Parkinson’s disease and restless leg syndrome have been observed to develop an addiction to gambling. Bipolar disorder because exorbitant spending is known to be a symptom and can take form in gambling. Parkinson’s and restless leg syndrome, because of the theory that the medications can increase the activity of dopamine in the brain as a culprit. Other causes can include, emotional conditions, schizophrenia, mood problems, antisocial personality disorder, and alcohol or drug addictions. People who have problems with gambling usually spend a lot of time doing so and don’t leave much time for family, friends, and important events. Bigger bets begin to get placed and they happen more often, which can lead to growing debts causing the person to borrow money from friends or family. Those with problems can’t fully stop gambling but would rather â€Å"cut back,† and can also become bad-tempered, depressed, withdrawn, or restless if they aren’t able to gamble. Gambling can have some very serious effects on the gambler, as well as those around him/her. Debt, bankruptcy, poverty, theft, prostitution, and suicide issues can all be side effects of gambling. Families with people those who have an addiction to gambling are more at risk of experiencing domestic violence and child abuse. And children of compulsive gamblers have a higher chance of developing depression, behavior problems, and substance abuse. There are many reasons for gambling and usually it is for fun or excitement, to escape or forget problems, to win money, or to feel challenged. In Canada, gaming is the largest  entertainment industry being the same size as movies, TV, recorded music, and professional sports combined. During 2007, 70.7% of adults gamble, and the most common gaming activities among Canadian adults are lotteries and instant-win tickets. About 3.2 of adults, and 2.2% of youth, are affected by moderate to severe problem gambling. A survey conducted in 2001-2006 suggests that the provinces, which have the highest rates of gambling, are Saskatchewan and Manitoba, and Quebec and New Brunswick have the lowest. Gambling can be overcome, as there are multiple ways to fix your problem. Many participate in gamblers anonymous or go to psychotherapy. Medications have been discovered which help reduce the urge to gamble, or thrill that comes with it. Financial counseling and self-help interventions are also ways to go about fixing your addiction. 70% of people who have gambling problems most likely also have another psychiatric issue; therefore they may need more than one type of treatment for their best chance to overcome their problem(s). My personal viewpoint on gambling is that, it’s not always a bad thing if you can keep it under control, and if it is legal. I think it’s a good way to have fun if you know your limits. If you have gambling problems it can become quite serious, which in that case you need to get some sort of help and realize it is not the best lifestyle. After doing this report I realize that it is an important issue that I was not fully aware of, and that it can be harmful to ones present and future just as much as alcohol and drug addictions. Bibliography http://www.onhealth.com/gambling_addiction/article.htm https://dl.cssd.ab.ca/d2l/lms/content/viewer/view.d2l?tId=2157962ou=1868624 http://www.problemgambling.ca/EN/Documents/FA_GamblingProblemGamblinginCanada.pdf

Robert Brownings Childe Roland to the Dark Tower Came Essay -- Childe

Robert Browning's Childe Roland to the Dark Tower Came   Robert Browning's "Childe Roland to the Dark Tower Came" is a poem about torture. Whether Roland is actually in Hell or just trapped in the madness of his mind, his own failure and the way in which he wasted his life will continue to torment him for all eternity. The imagery throughout the poem displays a completely despairing attitude, and several bitter ironies which he cannot escape plague him during his quest. The title "Childe" implies an untested knight, but Roland is already jaded at the beginning of the poem. Reliving his failure, Roland has no reason to have any positive thoughts. Everything he sees is negative and ugly. The grass "[grows] as scant as hair in leprosy," and the oak tree is "gaping at death." The way in which he views Nature is almost Puritanical. It speaks to him peevishly, saying that it is waiting for Judgment Day. To him, the land is sparse and dead because it is being punished, just as he is. Even the river seems to have a life of its own when he describes it. First he ascertains that the...

Health Care in India

Health care is the treatment and prevention of illness. Health care is delivered by professionals in medicine, dentistry, nursing, pharmacy and allied health. The delivery of modern health care depends on an expanding group of trained professionals coming together as an interdisciplinary team. The health care industry incorporates several sectors that are dedicated to providing services and products dedicated to improving the health of individuals.According to industry and market classifications, such as the Global Industry Classification Standard and the Industry Classification Benchmark, the health care industry includes health care equipment and services as well as pharmaceuticals, biotechnology and life sciences. The particular sectors associated with these groups are: biotechnology, diagnostic substances, drug delivery, drug manufacturers, hospitals, medical equipment and instruments, diagnostic laboratories, nursing homes, providers of health care plans and home health care.The rate of growth of the health care industry in India is moving ahead neck to neck with the pharmaceutical industry and the software industry of the country. Much has been said and done in the health care sector for bringing about improvement. Till date, approximately 12% of the scope offered by the health care industry in India has been tapped. The health care industry in India is reckoned to be the engine of the economy in the years to come.Health care industry in India is worth $17 billion and is anticipated to grow by 13% every year. The health care sector encompasses health care instruments, health care in the retail market, hospitals enrolled to the hospital networks etc. India in case of health care facilities still lakes the adequate supply. In health care sector also there is huge gap between demand and supply at all the levels of society. Still there are so many urban areas were you could hardly find any multi specialty hospital.And in case of metros the market sentiments i tself created a need of psychological consultation. Healthcare, which is a US$ 35 billion industry in India, is expected to reach over US$ 75 billion by 2012 and US$ 150 billion by 2017. The healthcare industry is interestingly poised as it strives to emerge as a global hub due to the distinct advantages it enjoys in clinical excellence and low costs. In today’s highly competitive environment, hospitals are increasingly realizing the need to focus on ervice quality as a measure to improve their competitive position. Customer based determinants and perceptions of service quality, therefore, play an important role when choosing a hospital. Today the healthcare industry has emerged as one of the most challenging sectors as well as one of the largest service sector industries in India with estimated revenue of about US $ 30 billion constituting 5% of the GDP. India is one of the second most populous nations of our world with a population of over a billion.The Indian economy over the recent past has started looking up and has now decidedly been acknowledged as likely to contribute to the sustained economic growth. The Indian healthcare Industry though still nascent in size and dynamic compared to other countries has also benefited from this economic boom. The primary driving force for an enhanced demand for quality healthcare standards are the 300 million middle class populations. Their need of quality within acceptable costs is making corporate hospitals see reason in reducing tariffs with a view to attract volumes.

Short Answer Tips for the Common Application

Tibetan Silver

Tibetan Silver is the name given to the metal used in some jewelry available online, such as on eBay or via Amazon. These items typically ship from China. Have you ever wondered how much silver is in Tibetan Silver or about the chemical composition of Tibetan Silver? Would you be surprised to learn that this metal can be dangerous? Tibetan Silver is a silver-colored alloy consisting of copper with tin or nickel. Some items described as Tibetan Silver are cast iron that has been plated with the silver-colored metal. Most Tibetan Silver is copper with tin rather than copper with nickel because nickel causes skin reactions in many people. Health Hazards Ironically, the metal often contains other elements that are much more toxic than nickel. It is inadvisable for pregnant women or children to wear items made with Tibetan Silver because some of the items contain high levels of dangerous metals, including lead and arsenic. eBay issued a buyer warning so that bidders would be aware of the metallurgical testing conducted on Tibetan Silver items and the possible toxicity of these items. In six of seven items that were analyzed using x-ray fluorescence, the primary metals in the Tibetan Silver were actually nickel, copper, and zinc. One item contained 1.3% arsenic and extremely high lead content of 54%. A separate sampling of items revealed comparable compositions, with trace amounts of chromium, aluminum, tin, gold, and lead, although in that study, all of the samples contained acceptable levels of lead. Note that not all items contain toxic levels of heavy metals. The warning for pregnant women and children is intended to prevent accidental poisonings. Other Names Sometimes comparable metallurgical compositions have been called Nepalese silver, white metal, pewter, lead-free pewter, base metal, or simply tin alloy. In the past, there was an alloy called Tibetan Silver that actually did contain the element silver. Some vintage Tibetan silver is sterling silver, which is 92.5% silver. The remaining percent could be any combination of other metals, although usually, it is copper or tin.