Alloy Definition and Examples in Chemistry

Alloy Definition and Examples in Chemistry An alloy is a substance made by melting two or more elements together, at least one of them metal. An alloy crystallizes upon cooling into a solid solution, mixture, or intermetallic compound. The components of alloys cannot be separated using a physical means. An alloy is homogeneous and retains the properties of a metal, even though it may include metalloids or nonmetals in its composition. Alternate Spellings: alloys, alloyed Alloy Examples Examples of alloys include stainless steel, brass, bronze, white gold, 14k gold, and  sterling silver. Although exceptions exist, most alloys are named for their primary or base metal, with an indication of other elements in order of mass percent. Uses of Alloys Over 90% of metal used is in the form of alloys. Alloys are used because their chemical and physical properties are superior for an application than that of the pure element components. Typical improvements include corrosion resistance, improved wear, special electrical or magnetic properties, and heat resistance. Other times, alloys are used because they retain the key properties of component metals, yet are less expensive. Example Alloys Steel: the name given to an alloy of iron with carbon, usually with other elements, such as nickel and cobalt. The other elements add a desired quality to the steel, such as hardness or tensile strength.Stainless Steel: another iron alloy, which typically contains chromium, nickel, and other elements to resist rust or corrosion.18k Gold: this is 75% gold. The other elements typically include copper, nickel, or zinc. This alloy retains the color and luster of pure gold, yet is harder and stronger, making it better suited for jewelry.Pewter: an alloy of tin, with other elements such as copper, lead, or antimony. The alloy is malleable, yet stronger than pure tin, plus it resists the phase change of tin that can make it crumble at low temperatures.Brass: a mixture of copper with zinc and sometimes other elements. Brass is hard and durable, making it suitable for plumbing fixtures and machined parts.Sterling Silver: is 92.5% silver with copper and other metals. Alloying silver makes it h arder and more durable, although the copper tends to lead to greenish-black oxidation (tarnish). Electrum: Some alloys, like electrum, occur naturally. This alloy of silver and gold was highly prized by ancient man.Meteoritic Iron: While meteorites may consist of any number of materials, some are natural alloys of iron and nickel, with extraterrestrial origins. These alloys were used by ancient cultures to make weapons and tools.Amalgams: These are mercury alloys. The mercury makes the alloy much like a paste. Amalgams may be used in  dental fillings, with the mercury intact, although another use is to spread the amalgam and then heat it to vaporize the mercury, leaving a coating of another metal.

Economics Dissertations How to Create a Masterpiece

Economics Dissertations How to Create a Masterpiece Most students who are undertaking the major of economics have got an element of economics dissertations during the final year of receiving the education. Basically, it may be the greatest writing project that a student has to fulfill if compared to the time, efforts, and dedication that are needed to write it. The economics is a young science that has a tremendous impact on the world. It finds and detects the peculiarities and develops personal theories regarding the tendencies in the world of finances and bank affairs. Points to Bring Economics Dissertation to Perfection With an abundance of thesis topics for economics papers, there will always be something interesting to investigate and put into practice. That is why in order to craft a real masterpiece in the science of economics, the author should attend to the following points while writing the assignment. Find a writing niche Before you set out on your investigation path, you should make a decision on where you will start your writing. You need to consider what field of economics you are interested in. It can be either macro- or microeconomic investigation. Conduct the investigation of the tendencies in the world of science and concentrate on finding the topic that will be applicable and practical for the society and experts of the science. You need to understand what contribution you can make to the fund of the world’s knowledge. Decide on the typology of economics writing The world of finances is composed of so many aspects that it is hard to imagine. The writer can formulate a personal economics theory and work on the arguments which will prove its applicability. The investigators of economic theories have got a potential of helping the society. It is possible to study the existing theories and conduct a comparative historical analysis of the background of the science. There is also an opportunity to develop either an empirical investigation or gathering of encyclopedia entries. All these types will be equally helpful, and it depends exclusively on the writer what topic is the most important for working on. Provide a mathematical analysis Economics is tightly connected with numbers as most of the investigation involves financial analysis and statistical data analysis. You should never ignore the necessity to present the calculations in your dissertation. It is usually presented in a practical part of the dissertation or in the appendixes. Prepare all the formulas beforehand so that it is easier to organize the whole paper in the most effective manner. Use modern technologies Sitting with a calculator and counting the statistical data manually will take a lot of your time. There are plenty of software solutions which were developed specifically for the economists. They contain all the basic formulas and can automatically calculate all the data that is inserted into the corresponding fields. Additionally, it is strongly advisable to create some charts and diagrams that will generalize all the ideas that will be described in the text. Moreover, it can become a superb visual aid for writing during the public defense of the dissertation. The information above would be applicable exclusively for writing the economics research project, but you shouldn’t also forget about general writing demands for dissertation writing that are standard for all types of writing as well as some looking facts to make the paper interesting. As a result, you will obtain an investigation paper of the ultimate quality. If you are looking for professional help with dissertation in economics, dont hesitate to contact our service right now.

Narrative Critical Analysis Essay Example | Topics and Well Written Essays - 750 words

Narrative Critical Analysis - Essay Example Patricia Hampl has done a brilliant job in explaining how memoir is a picture of reality and imagination and hence, an attempt by a writer to find his hidden ‘self’. Through her essay, Hampl proves that a memoir is not just a life story but also a medium of self discovery as it helps the writer not only in understanding the hidden self, but also in harmonizing the images and emotions stored in the memory, and in attaining the most desired inner peace. Analysis From my experience of writing a memory narrative, I have learnt that the event in the past reveals a lot more than what I have thought it to be. It has made me realize that events that leave an emotional impact on us are the ones that leave more impact on the memory. It has shown me that most of the times, it is not the event but the interpretations we make about them that makes it more or less important. Also, one single event can be seen differently by different people as they see it through their own personal an gle. This fact has been explored in a clear manner in the essay ‘Memory and Imagination,’ by Patricia Hampl. Memoir is an account of true events in life and hence, it is not fiction. Fiction is completely imaginative while memoir is real life story told by people. However, according to Hampl, memoir also has touch of imagination to it. Hence, it has shades of fiction. This is the reason Hampl also says that the first draft of the memoir is important. Hampl says that the first draft is like a fresh look and revelation of the truth. It is written without the barriers of the conscious mind and hence, has a deep meaning to it. The first draft is the real thing as it is not written with careful observation or restrain. When the writing flows without any carefulness, then it brings the hidden feelings, interpretations and emotions of the writer. This brings the deep hidden emotions and thoughts to the surface. This helps the writer in discovering his own self which is usually hidden in the unconscious mind. Hence, Hampl also says that if the first draft is written with careful attitude, then it is a failure. By this she means that carefully written first draft does not bring the hidden feelings in the unconscious and fails to help the writer discover his own self. Hence, Hampl also says that heart is the boss of writing. According to Hampl, the conscious and rational mind takes a back seat while writing. Memoir is written with the aid of memories of past. However, memory is not static or frozen aspects of life. They are molded into shapes and colors which are added to it through person’s eyes and mental opinion. When a person writes, his intuition, his wishes and his dreams are fulfilled. The memoir is written without the pressure of being completely truthful. Hence, a writer tries to fulfill his unfulfilled wishes and desires in the past by showing them as fulfilled in his memoir. Moreover, when a person writes a memoir, his rational mind is ove rpowered by his irrational and imaginative mind. Moreover, the fears, disappointments, weaknesses and sadness, which is guarded by the rational mind, are given an outlet through the memoir. This shows that the mind loses its grip on a writer when he is writing and his heart takes the control. Hence, Hampl says that heart is the boss when writing. Hampl is right when she says that heart is the boss of writing. I have experienced that when I am writing about my life, I tend to be more open, unburdened and relaxed about my experiences and descriptions.

President as global leader Essay Example | Topics and Well Written Essays - 500 words

President as global leader - Essay Example Prior to the onset of the Second World War presidents had only been interested in being leaders in the Western hemisphere, with the Monroe Doctrine asserted that America had the right as well as the duty to interfere with, or lead the countries of Central and Latin America.2 The only time that an American president tried to be a global leader was when Woodrow Wilson attempted to be one at the end of the First World War. Congress, who vetoed American membership of the League of Nations and returned to a policy of strict neutrality, overturned his efforts.3 In many respects the American president acting as a global leader was a consequence of American involvement in the Second World War, and also the Cold War, which followed on from it. President Roosevelt was able to portray himself as a global leader during the Second World War until his own death. The American use of the atomic bombs against Japan meant that President Truman could boast of being the most important global leader due to the Americans been the only nuclear power. The onset of the Cold War also ensured that America could not resort to a neutral foreign policy ever again. American presidents were in affect global leaders of the capitalist Western World, containing the spread of communism.4 Certainly in the Cold War period the majority of American presidents successfully presented themselves as being global leaders. Truman, Eisenhower, Kennedy, Johnson, Nixon, and Reagan all made viable claims about their status as global leaders. Presidents Carter and Ford were arguably less successful in that regard. The ability of these presidents to portray themselves as global leaders was shaped by internal and external factors as well as their own personalities. To a large extent all post-war American presidents have had the same constitutional powers as each other.5 In constitutional terms every American president has operated with actual as well as potential blocks to his or her

Techniques of Establishing Character Essay Example for Free

Techniques of Establishing Character Essay Opening a new business is never an easy task. Various factors count while starting a new venture and much is at stake. However the formalities and the difficulties also depend on the country one wants to do business in. Every country has certain rules and regulations as regards to doing businesses on its land. El Salvador is an open economy in Central America and attracts foreign investors. After Chile El Salvador has become the second most open economy in Latin America. Government is democratic and offers several promotional benefits for the investors. Several factors like â€Å". . . CAFTA (Central American Free Trade Agreement), low inflation, proximity to the US marketplace, competitive operational costs, and tax exemptions in free trade zones. . . † make the country an attractive option for foreign investment (â€Å"Doing Business in El Salvador†, 2007). Even though issues like unemployment and gang activities are bothersome but â€Å". . . sustainability and sound CSR (corporate social responsibility) policies in agribusiness, manufacturing, apparel, electronics, and the development of bio-fuels place El Salvador at the forefront of Latin American trade development† (â€Å"Doing Business in El Salvador†, 2007). The country also gets assistance from the United States to tackle with the negative issues in the society (â€Å"Doing Business in El Salvador†, 2007). Flexible policies of El Salvador make it much easier for the companies to do business in the country. State has free trade agreements with a number of countries like US, Guatemala, Honduras, Nicaragua, and Dominican Republic, Chile, Mexico, Dominican Republic, Panama, Taiwan, Colombia, and Central America and many other countries. It is an open market for US goods with very low tariffs and other trade restrictions. USA is the biggest trade partner of the country followed by Central America and Mexico. The official currency is US dollar. El Salvador has very less corruption. On the other hand there are also some limitations for the foreign companies. Judicial system of the country is time-consuming, lethargic and is partial as far as foreign companies are concerned. Crime rate is high and literacy rate is low leading to unemployment and lack of English proficiency (â€Å"Doing Business In El Salvador: A Country Commercial Guide for U. S. Companies†, 2008). El Salvador offers significant growth in sectors like automotive parts and service equipment, dental equipment, printing and graphics and travel and tourism. Agents are the best way of entering the Salvadorian market and the concentration of trade in the capital city rules out the need for more than one agent. Companies or individuals must verify every agreement and bona fides of partners they are going to be associated with. There is no need of an exclusive territorial contract in the beginning with agents. The Salvadoran Commercial Code is meant to protect both the agents and the companies in default situations. Companies must consult local lawyers to get a hold of the legal system of the country. Several protections, compensations and damages must be considered while entering into an agreement with an agent or a partner (â€Å"Doing Business In El Salvador: A Country Commercial Guide for U. S. Companies†, 2008). The next step is getting a license to open an office in the country. Presence of a lawyer in every step is crucial for hassle free progress from one step to another. â€Å"One stop† window of El Salvador’s National Investment Office provides every assistance for getting a license to open an office, branch, or agency. â€Å". . . it also provides assistance with labor related issues, immigration, and information about the Free Trade Zone Law regime† (â€Å"Doing Business In El Salvador: A Country Commercial Guide for U. S. Companies†, 2008). Different licenses are needed that can be listed as follows: a) Society or Company Registration b) Initial Balance Registration c) 1 st time Establishment Registration d) Income Tax Identification Number (NIT) (Ministry of Finance) e) Value Added Tax Identification Number (IVA) (Ministry of Finance) f) Invoices Correlative Registration (Correlativo de Facturas) (Ministry of Finance) g) First time Employer’s Identification Number (NIP) (Salvadoran Social Security Institute) h) Work Place Registration (Ministry of Labor) (â€Å"Doing Business In El Salvador: A Country Commercial Guide for U. S. Companies†, 2008). All these formalities can be submitted at the â€Å"Integral Services Window† of the Registry of Commerce Office of the National Registry Center (â€Å"Doing Business In El Salvador: A Country Commercial Guide for U. S. Companies†, 2008). $11,428 is the minimum capital needed to start a business. The Commerce Registry also needs the names of the companys board of directors and administrative personnel. All the accounting records of the company must be in Spanish and approved by a certified public accountant. The Commerce Registry issues the license only when the company’s location details are cleared by the municipality and it is registered in the National Industrial and Commercial Establishments Directory at the General Director of Statistics and Census. License is then printed in local newspaper. There is a need of further clearances from specific ministries for specific companies. For instance pharmaceuticals companies must complete all the formalities with the Superior Council for Public Health and so on for other sectors (â€Å"Doing Business In El Salvador: A Country Commercial Guide for U. S. Companies†, 2008). Franchise is another attractive option for starting a new business in El Salvador. US fast food joints are booming in the country. Others include: U. S. franchises operating in El Salvador include hotels and car rental, auditing/accountancy, credit reports, mobile advertising and media marketing, print shop/one hour photo labs, beauty/hair salons, fitness centers, computer learning, child care/learning centers, video rental, exterminator services, and dry cleaning (â€Å"Doing Business In El Salvador: A Country Commercial Guide for U. S. Companies†, 2008). Direct marketing using telemarketing mediums like mobile and internet and cable services is another option for establishing a business. A joint venture of US and Salvadorian company must be incorporated and duly registered in El Salvador (â€Å"Doing Business In El Salvador: A Country Commercial Guide for U. S. Companies†, 2008). Next step is concerned with the distribution and selling of the product. Import of products is handled by the distributors who can launch and utilize the opportunity of their already existing wide networks to market any new product in El Salvador. Small retailers buy some products like used vehicles and auto parts, clothing, jewelry, cosmetics and household goods from US themselves. Free trade zones form major distribution centers of the country. It is very important to market a product with as much efficiency and care as devoted in its production only then can the product reach its consumers. Using prominent newspapers, billboards and other media can be useful for introducing a new product and communication your idea to the end user. Grand launch at premium hotels and among significant personalities of the region can bring a new product in instant limelight: As competition increases, creative sales promotions such as contests, drawings, raffles, etc. , become more relevant. Samples of products are often handed out at supermarkets and department stores. Participation in local exhibits and sponsorship of local events and conferences is a common local practice for brand positioning. Shared budget for promotional campaigns and advertising is highly appreciated by local importer/distributor, and simple things such as the availability of brochures and other promotional materials in Spanish are very helpful for marketing products (â€Å"Doing Business In El Salvador: A Country Commercial Guide for U. S. Companies†, 2008). Government of El Salvador regulates only the liquefied propane gas rates, public transport rates, and energy rates. Import duty and the 13-percent value-added tax (VAT) is added to the price of imported products. â€Å"Import tariffs for capital goods are zero percent, raw materials range from zero to 5%, intermediate goods range from 5 to 10%, and finished goods are charged a maximum of 15%. Textiles, agricultural products, vehicles, and a few other non-essential products are charged higher tariffs that range from 15 to 30%† (â€Å"Doing Business In El Salvador: A Country Commercial Guide for U. S. Companies†, 2008). Free trade agreements between US and El Salvador reduce the amount of tariffs on the US products to a greater extent. No duty is imposed on 80 percent of the American products. Trade barriers are also minimal. However some services and professionals do face some barriers like architects and notaries must be local only. Rice and pork are the two products that buyers have to buy locally and their further demands follow an import quota system and 40 percent duties. Countries bound by CAFTA-DR do not question each others sanitary inspection methods. In case of imports, there is no need of import licenses and a commercial invoice and bill of lading can only be sufficient to serve the purpose. The National Registry Center (CNR) has one-single-import shop where a company can get import licenses of the following institutions: Customs, Ministry of Finance, Ministry of Agriculture, Ministry of Health, Ministry of National Defense, Ministry of Economy (virtual), Ministry of the Environment, and the National Health of Public Council. Some products like arms and ammunition exported from US need an export license from the US government. There are other products that need a license from the Bureau of Industry and Security (BIS). So the exporters must make sure that they have the required licenses and permissions to export their products to El Salvador. Some products like high-caliber firearms, machines and tools for making coins, counterfeited coins and bills, movies contrary to ethics and good behavior, abortives etc. are prohibited for import in the country (â€Å"Doing Business In El Salvador: A Country Commercial Guide for U. S. Companies†, 2008). Some rules regarding the labeling of the products can be listed below: †¢ Retailers must have the price of the product either on the packaging or in a visible place. †¢ Products that are sold by weight or volume or any other measure must have the weight, volume, or an exact measure of the contents on the label. †¢ For pharmaceuticals, the list of ingredients, expiration date, dosage, contraindications, risks involved when used, residual toxic effects, etc. as established by the Ministry of Public Health must be printed on the label. †¢ Labels on frozen and canned foods must include an expiration date. †¢ Labeling must be in Spanish language (â€Å"Doing Business In El Salvador: A Country Commercial Guide for U. S. Companies†, 2008). Customs procedures are relaxed and simple in the country. Use of modern technology, internet and â€Å"Teledespacho† system in particular has reduced the time the formalities used to take. Teledespacho system rules out the need of a custom broker and provides a direct link between the importer/exporter and the Central Customs Service. Mandatory Salvadoran Standards (NSO) and Recommended Salvadoran Standards (NSR) are two types of standards used in the country: NSOs include the standards regulating the International System of Units; standards relating to materials, procedures, products and services that may affect human life, safety and integrity and the safety and integrity of other live organisms; environmental protection standards; and standards considered by the government to be relevant to the economy or in the public interest. NSRs are concerned with materials; procedures, products and services not covered by an NSO (â€Å"Doing Business In El Salvador: A Country Commercial Guide for U. S. Companies†, 2008). El Salvador is an attractive option for doing businesses and the regulations of the government are flexible enough for the companies to open up and explore new opportunities in the country. It is a mutually beneficial relationship. Both the foreign investors and the economy of El Salvador benefit from this flexible system. Growth and development of El Salvador depends largely on the foreign investment, in particular from US which is its biggest trade partner (â€Å"Doing Business In El Salvador: A Country Commercial Guide for U. S. Companies†, 2008). There are several similarities and differences in regulations and conditions with regards to opening a business in the US and El Salvador. Like El Salvador USA has several free trade agreements with numerous nations around the globe making it an attractive option for foreign investment. US is also a free, democratic and open economy. El Salvador has most of its business concentrated in its capital city while it is not the case in US. Laws and regulations are same in the entire nation of Salvador while in US every state has its own business regulations. Licenses and permits are required for doing only specific jobs in USA. Need of a license depends on the state and exact location of the business since every state has different local regulations. The owner also has to pay business taxes depending upon the location of business. Following business need licensing: †¢ for those businesses or professionals that go through extensive training before practicing, such as lawyers, physicians, nurses, accountants, dentists, teachers, or †¢ before carrying on a particular trade or business, in order to protect the environment and consumers from fraudulent activities and unsafe products or services. Real estate agents, restaurants, bars, insurance agents, pawnbrokers, peddlers, cosmologists, private investigators, and mechanics are representative of this group, to name a tiny fraction (â€Å"State licenses†). Like El Salvador every business needs an EIN (employer identification number). It is always a good step to hire a local lawyer and an accountant to aid in the initial legal proceedings of the country. Also since in US every state has different laws and statutes regarding a business so it is very important to seek local help. Major difference in doing business in US and in El Salvador is that †¢ US is a much bigger economy †¢ Offering much bigger opportunities †¢ There is no lack of help government offers to foreign companies and investors †¢ Laws are rigid to protect both domestic and foreign companies †¢ Literacy rate is much higher †¢ English proficiency is much higher among locals †¢ Multilingual and multicultural diversity of US allows everyone fulfill their dreams and reach their specific consumers. Translators and interpreters are available everywhere for every kind of help and bridging gaps among people of different language backgrounds. †¢ Crime and unemployment rates are much lower †¢ Infrastructure is well developed †¢ Every tool for direct marketing like internet, telemarketing, cable services, postal delivery systems, courier systems are very well developed and provide expanded prospects for different businesses. †¢ There is no shortage of resources and financial aids from government institutions and private banks.†¢ With proper planning any dream can turn into a wealthy and booming business. References â€Å"Doing Business in El Salvador† (2007). Retrieved August 12, 2008 from http://www. gatewayelsalvador. com/gateway_el_salvador_doing_business_in_el_salvador. html â€Å"Doing Business In El Salvador: A Country Commercial Guide for U. S. Companies† (2008). Retrieved August 12, 2008 from http://www. buyusa. gov/elsalvador/en/ccg. html â€Å"State licenses. † Retrieved August 12, 2008 from http://business-law. freeadvice. com/starting_a_business/state_licenses. htm

What makes a good teacher? :: essays research papers

There are many things which make a teacher great and they all can`t be defined.However i`ve always considered several of them essential.In my opinion a good teacher is someonewho first of all creates interest in studying,doesn`t underestimate the children,has equal expectations of siccess from everyone and last but not least likes his job. A good teavher always has a sense of purpose.He chooses very carefully the teaching programme and adjusts it to the needs of his students.Children always come first and that`s why the decision he makes are based on how they will affect them.He shares experience with other teachers and thus is always learning new things. It is very important for a teacher to be a good communicator.He doesn`t just stand in front of the class and lecture but tries to establish a dialogue and tofind the best group activities in which every child to be involved.Discussion,peer-to-peer coaching are the things which make the process of teaching more interesting and challenging so that all students attend classes and participate actively. The good teacher works with all students.A friend of mine told me how her maths teacher tolerates only students who are good at mathematics or those who have special interest in the subject.Towards the rest of the class my friend says she`s very exacting.She gives homeworks and tests without bothering to ask about difficulties.She doesn`t try to explain it and as a result many students keep getting bad marks. I firmly believe teachers shouldn`t forget that all students no matter of their colour,race or gender have equal ability to study.Different students have different learning systems.Some can learn things easily while others need to spend more time over a given task.

What Is Mercantilism

What is mercantilism? According to the definition in the America Past and Present history book is an economic theory that shaped imperial policy thought out the colonial period, mercantilism was built on the assumption that the world’s wealth was a fixed supply. In order to increase its wealth, a nation needed to export more goods than it imported. Favorable trade and protective economic policies, as well as new colonial possessions rich in raw materials, were important in achieving this balance.During the reign of Charles II English policy makers assumed they established a well-integrated set of concepts about the nature of international commerce and a carefully planned out set of mercantilist government policies to implement them. However, they only were interested in solving their own problems. Since there wasn’t laws or anything to regulate these groups their needs lead to the rise of the English commercial regulations.The Navigation Act was passed in 1660 which sta ted that no ship could trade in the colonies unless it had been constructed in either England or America and carried a crew that was at least 75% English and that certain enumerated goods of great value that were not produced in England could be transported from the colonies only to an English or another colonial port.Thru out the years more and more regulations were set the last major legislation came in 1696. This statute tightened enforcement procedures putting pressure specifically on the colonial governors to keep England’s competitors out of American ports. American colonials thought they were in unity with England that would later prove false.