melting point; for annealing 800 degrees are needed. Iron‚ by comparison‚ has a melting point of 1538 degrees Celsius. Its low melting point makes copper easy to smelt‚ cast‚ and remelt without special furnaces or a heavy investment of fuel. Another advantage of copper is that it can be recycled without any loss of quality. As pure copper is too soft for structural elements or most practical appliances‚ it needs to be hardened and strengthened. It is therefore combined with
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Causes of Air Pollution. The combination of external physical conditions that affect and influence the growth and survival of life is the environment. The social and cultural conditions affect the nature of an individual or community. Having good environment condition in which people live and work is important‚ but sometimes the society and people attempt against harm the environment. In fact‚ several main causes of pollution can be attributed to human activity man. For example air pollution
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Space research has many advantages and disadvantages. Some of the advantages are that many discoveries have been made due to space research. This knowledge can help us become a more developed society and it helps the economy. Space research can benefit us by discovering technology that will help us with our lives. Technologies have been discovered thanks to the space program such as Teflon which is a non- stick cook wear will continue to improve our lives. Space research and exploration may help
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This essay is related to the process of Fracking and its implications on the Karoo. It will provide a background on exactly what Fracking is and how the process is carried out and also how and to what extent the process will affect the Karoo. Knowledge gained from the environmental economics course will be used and various factors and arguments will be weighed and taken into consideration with the goal aimed at reaching an evidence based decision as to whether Fracking should or should not be allowed
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The creation of an identical copy of something is the process of cloning. It is simply a form of asexual reproduction. Cloning is a big issue in todays world of science because of the potential benefits‚ the risks involved‚ and medical‚ ethical and religious conflicts. Plants and animals have already been cloned and stem cell research is already going ahead‚ and maybe one day science will be able to clone a human. The division of opinion on cloning will require many forums of discussion to cover
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I think that living abroad has a lot of advantages‚ because sometimes living in other country is better than living in our native country. When person is abroad he has more chance to find well-paid job‚ he could learn some foreign language and he will make new friends. However‚ when we go to foreign country we must take some risks as the traffic of people‚ financial problems. Also‚ our family and friends will be missed us. Today very few people could find well-paid and good job and they prefer
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In regard to dahi‚ several factors make it a good carrier for probiotics. Dahi possesses a positive health image‚ has a long history of safe use and is liked by people belonging to all age groups and in different regions. Hence‚ administration of probiotic organisms becomes easy through this product. Moreover‚ the technological reasons also exist for the use of dairy products as carriers for probiotics. The technologies involved in the making of dahi like fermented products are optimized to some
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Handphone also known as mobile phone or cell phone or smart phone‚ and is an electronic device used for mobile telecommunications (mobile telephony‚ text messaging or data transmission) over a cellular network of specialized base stations known as cell sites. Martin Cooper invented the handphone. He is a Motorola researcher and executive. Martin made the first call on a handheld mobile phone on April 3‚ 1973. Cells for handphone base stations were invented in 1947 by Bell Labs engineers. Handphones
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move away work from their private lives because when they finish their job and get home‚ most of the times‚ they continue working‚ they never disconnect! In conclusion‚ I would say that we have to learn how to manage computers‚ we have to take advantage of the facilities that they provide us‚ avoiding becoming their slaves‚ which means being able to live without them‚ not being dependents.
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What is telehealth ? telehealth is a collection of means or methods for enhancing health care‚ public health and health education delivery and support using telecommunications technologies . It also ecompasses a broad variety of technologies and tactics to deliver virtual medical ‚ health ‚ and education services. While on the other hand telemedicine is the remote diagnosis and treatment of patients by means of telecommunications technology. Telehealth uses computer assisted telecommunications
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