Pyrite

Pyrite is a very interesting mineral for many reasons. The name Pyrite comes from the Greek word â€Å"pyr† which means â€Å"fire,† and was named because  it was  found that sparks would fly from it if struck against another minerals like steel. In early times, this sparking ability gave people a way of creating fire, and in later times, this  ability made it popular for  use  in early firearms devices  like the wheel lock. Today Pyrite  is called  Ã¢â‚¬Å"Fools Gold†Ã‚  because throughout  history people  have mistaken it for Gold  because of  its similar visible structure, metallic surface  and brassy yellow color.The funny thing is Gold is often found  with to  Pyrite deposits. Pyrite can easily be distinguished from Gold. Pyrite  is much lighter in color and  much harder. Even though Pyrite is a fairly hard mineral, its crystals are known to  break and crumble, because it is brittle. Pyrite is common in the Earth's crust and found in almost  every possible geological environment like sedimentary, metamorphic, magmatic and hydrothermal deposits. Pyrite's usual crystal forms are cubic, octahedron and pyritohedron.When a cube and pyritohedron crystal combine, the  face of the cube  appear to be grooved with lines. Many times Pyrite will be found  in combinations of all these forms, but also can occur in masses, globular, radiating  or reniform. Pyrite is also commonly found  as small nodules. A mixture of this nodular  form, and are called â€Å"Pyrite Suns† or â€Å"Pyrite Dollars†,  are popular for collectors. Pyrite has the same chemical makeup as Marcasite but has a different structure, and shape. Pyrite is a polymorph of  Marcasite and it can be extremely  difficult to tell apart.The name Marcasite came from the Arabic word for Pyrite. The confusion between the two minerals is common because the jewelry  trade uses the name  Marcasite, when they are actually  s elling Pyrite. Actual Marcasite can’t be used in jewelry because it is even more likely than Pyrite  to crumble into a  powder. Another mineral named Bravoite is very closely related to Pyrite,  but contains 20% more nickel. Even though Pyrite contains a high percentage of Iron and is common, it is not used as a source for Iron today. It was mined as a source for Sulfur during WWII to produce sulfuric acid.The Sulfur  component of  Pyrite was in high demand as a strategic chemical, and was found in parts of Tennessee. The Pyrite supplied them with enough sulfuric acid to get the job done. Pyrite can be used to make marcasite jewelry and it usually set in silver. Pyrite is always in the process of being created or destroyed. It is mostly a good mineral but does have its down sides. Sulfate released from decomposing pyrite combines with water producing sulfuric acid, which leads to acid rock drainage and potentially acid rain.Pyrite also has caused problems for miners . The main issue is dust explosions brought from Pyrite. To prevent these explosions the miners spray limestone on the exposed coal surfaces. Pyrite has also been known to cause some structural damage, and did so in the U. S. , Canada, and Ireland. In 2009 problems with Chinese drywall imported into the U. S. after Katrina were results of oxidation of pyrite. Stone buildings containing pyrite have been known to turn brown. Other than a few problems, Pyrite is a beneficial mineral.

The Effects of Long and Short Term Stress

The Effects of Long and Short Term Stress Teresa Mcilwain PS2150-3 Emry Somnarain October 21, 2012 What does the term Stress mean? Stress is a term used in many different ways. Stress also can refer to events and circumstances, also examinations that can cause unease; to the specific body responses to such events, like Rapid heartbeat; or the mind's and body's try to deal with in order to recapture a sense of wellness.Stoklos defines stress as  a state of imbalance within a person, drawing out by actual or bought on different enviromental demands and the person's capacity to cope the demands†   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   What is the Effect of Short Term Stress? Short-term stress or acute stress is your reaction to an immediate threat. Divorce or sometime as simple as a deadline is a threat . This is kno wn as â€Å"fight or flight† response. The body is effected by stress is sleep disturbances.Insomnia is one form of sleep disorder. Short- term stress can be back pain, shoulder, or neck pain, Stress can even cause tension or migraine headaches. Depending on the nature of stress, you could experience rashes and hives or even hair loss. Your feet and hands may get cold as your blood flow is redirected from your skin to your heart. Shortness of breath may occur, if you have a touch of asthma and can cause asthma attacks. There are many more ways that stress can effects the body.What are the Long Term effects of Stress? Long-Term stress is the same as chronic stress has been defined by Pearlin as â€Å"the relatively enduring Problems and, conflicts and threats that people face in their daily lives. † The most known bases for this type of stress are family problems with spouse, parents, or children; love or sex problems; job related or s can  break down your immune syst em and make you very vulnerable to infection, including cold and flu symptoms.Prolonged stress can cause then you can suffer from Digestive problems, like constipation and diarrhea. Most people that have lots of stress turn to eating that end up being obese problems; and any other competitive involvement. Long-stress GREGORY L. WEISS, LYNNE E. LONNQUIST,. The Sociology of Health, Healing, and Illness BYESTRESS,htt://www. byestress. com/byestress-articles/effects-0f-stress-on-the-body. htm

ZEBRA COMPANY Essay Example | Topics and Well Written Essays - 1500 words

ZEBRA COMPANY - Essay Example which they need to arrange ticketing, network members of the company are now regarding purchasing wristband printers in order to make their own wristbands. The underlying objectives behind such a decision are to save costs on ticketing, provide a source of employment and hence, income for network members, offer a community or for-profit service for individual network members involved in organising additional events. In addition to that, the organization also plans to extend their operations to other communities who are engaged in similar activities. With such an underlying objective in their mind, the organization has approached us with an enquiry to purchase wristband printers in order to make their own wristbands and henceforth, bring down the costs of ticketing. Thus, this internal document will serve as a proposal highlighting the outlines of CNL as well as prospects of our company with regards to doing business with CNL. CNL is a small and local event management organization. They are yet to achieve a solid establishment and recognition. Considering that they are a newbie in this particular field, there are various problems associated with the organization. First and foremost, for a company who is not substantially established, pooling financial resources externally becomes a bit of a problem. This puts a limitation to the extent to which they can conduct their operations flexibly. Staff recruitment is another problem that they frequently face. More often than not, personnel work on a temporary basis in such companies and leave without a notice in search of better opportunities. This disrupts the company’s flow of operations and also, deteriorates the quality of service that they provide. The key to organize a successful event is to allocate the right resources with the appropriate skills. Companies like, CNL, do not possess a precise knowhow of efficient resource allocation. This often leads the company to incur much more costs than that is anticipated.

Bench mark assignment Essay Example | Topics and Well Written Essays - 1250 words

Bench mark assignment - Essay Example However, the bacteria spreads faster and affects the internal systems such as the lungs. The major symptoms of the disease include tiredness, weight loss, stubborn and chronic coughs, night sweats and loss of appetite (Harvard University, 2010). Also, people with tuberculosis may have heavy sputum. An infection of the lungs makes breathing difficult, and a patient produces amphoric sounds when breathing. Tuberculosis is a highly infectious disease. It is spread through air. Individuals near an infected person are at a high risk of being infected. Normally, the bacteria are suspended in body fluid droplets suspended in the air when an infected person coughs, spit or sneezes. As such, any person who breathes that contaminated air is at a high risk of getting the disease. People at high risk include friends, family members, and health workers. Tuberculosis bacteria are highly resistant to medication. As such, it is important to detect the virus at early stages of infection. The treatment is done after a successful diagnosis that involves a test on the sputum, skin, and chest x-ray. Treatment depends on whether a person has only an infection or has active TB bacteria. Infected person may be treated using simple preventative drugs such as Isoniazid. However, advanced TB requires complex treatment. According to WHO, active cases of TB requires specialized drugs like Ethambutol, Pyrazinamide, Isoniazid and Rifampicin (2009). Tuberculosis medications are supposed to be taken accurately lest the bacteria becomes resistant to treatment. Tuberculosis is among the most deadly illnesses in the world and affects 2.3 billion people in the world (CDC). According to the American lung association, the threat of tuberculosis has been falling steadily from the 1990s (lung.org). In America, total deaths arising from the sickness has tumbled. In addition, most of the fresh infections are arising from immigrants. In fact, immigrant infections comprise 62% of total infections in the

Using examples, explain the extent to which local planning authorities Essay

Using examples, explain the extent to which local planning authorities can and do meet the requirements for producing locally distinct plans, that satisfy both - Essay Example Market forces determined the use of land and what if anything was built upon it rather than the wishes of local communities and the central government. If landowners found that their land was most profitably used for agricultural purposes then it would remain as agricultural land, if it made the more money being used for residential or retail properties it would serve such purposes.1 The forerunners of local planning authorities began to emerge with the Town and Country Planning Act of 1925, despite the majority of planning decisions usually being left to individual local authorities to be enforced. The usefulness of the early local planning authorities was restricted by the harsher economic conditions that dominated much of the inter-war period. The active use of town and country planning by the equivalent of local planning authorities was thus limited in use except by local authority building council houses.2 Local planning authorities began to come into their own with the expansion of council house construction, local communities wanted more housing and central government decided it also wanted greater levels of social housing nationally. Council housing schemes were not a post-war innovation, as they had originally began in the 1920s. However council house construction due to a shortage of public funds had been restricted. After 1945 the Atlee government sanctioned and funded the building of millions of council houses as a vital component of post-war reconstruction, that also increased the availability of socially provided affordable housing.3 The era of post-war reconstruction was the raison d’Ã ªtre for the largest programmes of publicly funded construction in Britain, and the extensive use of local planning authorities to complete those projects. Unprecedented levels of public expenditure were needed due to the sheer scale of reconstruction required as a consequence of wartime bomb damage. Town planning and local planning authorities were

Positive Effects of Balancing Government Budget Essay

Positive Effects of Balancing Government Budget - Essay Example This essay outlines the importance of maintaining a balanced government budget to the state of a national economy. Governments should balance their budget to ensure that it operates comfortably on its revenues, within its means. Government obtains revenue from three major sources. These are through direct taxes, borrowing, and printing money. When the government imposes taxes, funds from entrepreneurs, businessmen, personal incomes and capitalists are collected. These funds are channeled to the treasury, where politicians and policy makers control on how to spend in a given particular financial year. Balancing budget enables the government to set and make realist financial judgments, which are not at the expense of the taxpayers. The current global recession has drastically reduced the level of income both at individual and national levels, as a result of job losses and shrinking of major markets. Balancing government budget would be beneficial in a number of ways. It would enable the government to control and critically analyze its spending. This will enable it to prioritize on the most important sectors, for example health, education, housing, security and welfare of workers. This would cushion these key areas from incurring budgetary deficits during periods of financial crises. Balancing government budget just as in personal budgets encourages utilization of resources more wisely. The government owes the taxpayers an obligation to use their money on provision of certain goods and services.

Private interest groups and their role in Washington Essay

Private interest groups and their role in Washington - Essay Example Each law or amendment has a bunch of monetary transactions behind it. While a conventional market place sells commodities and services, the Congress sells legislative favors. It is a pitiable condition, but nevertheless true. Numerous empirical studies have been conducted on understanding the nature of influence of interest groups. As far as studies on interest groups’ ability to influence legislative voting, the results are mixed. It is fairly clear that cultural issues such as gay rights, abortion, school prayer, etc have minimal interference from interest groups. The reason is obvious – they have no overt commercial bearing. For general socio-cultural topics â€Å"legislative voting is driven by partisanship, ideology, religious beliefs, and constituency opinion, with interest group influence occurring at the margins. Interest group influence on culture war issues is conditional, but may be more visible simply because support has been relatively low.† (Haider-Markel, 1999) Amid the generic fear over the influence of interest groups, a particular concern has risen over the notion that Political Action Committees (PACs) are buying the allegiance of politicians. The flow of money into PAC’s reveals a blatant misuse of campaign financing. For example, the PAC leadership has been found to allow special interests and big business to sway key decisions. One can garner this from an analysis of receipts and expenditure incurred by PACs in the last decade. The spirit behind limits to campaign donation is to pre-empt any undue pressure from large donors. But this regulation is easily circumvented â€Å"by giving to a members personal campaign fund and to his or her leadership PAC†. (Public Citizens Congress Watch, 2004) So, legal loopholes such as these have effectively made election campaigns sophisticated quid-pro-quo affairs. To cite an example, during the 1991-92 Congressional elections, the maximum personal campaign fund cap