Zinc iodide, ZnI2, is a while (hydrated) or yellow (dry), granular, odorless, hygroscopic (absorbs water in the atmosphere) solid compound that is soluble in water (1g:0.3 mL water). It turns to brown when exposed to heat or sunlight, showing decomposition with release of iodine gas (DeMeo, 1995, p. 836). It is extensively used in the laboratory to illustrate the Law of Definite Proportions and Law of Conservation of Mass, two of which are the foundations of chemical reactions and basis of stoichiometry.read more
Yuri Gagarin was the first man in space. He was born in the Soviet Union. I choose this man for my research because I am interested in the history of the space exploration. I am going to research the story of the first cosmonaut's life, what background he had and what contributed to his achievement, what difficulties he had to face and how he coped with the burden of fame.read more
As the chairman of the Department of Anatomy, University of Chicago, Shubin insists for us to trust that his discoveries are credible. In the third chapter of Your Inner Fish, he claims to have found genetic evidence for similarities between humankind and the animal kingdom. He links his archaeological discoveries with the development of limbs in human beings, and subsequently with DNA and genes, the work of the retinoic fluid and ZPA. Indeed, it is believable. Even the believers of God who have blatantly rejected the theory of evolution may refuse to reject the fact that all living beings on earth are related, somehow or the other. After all, we also consume animals in our daily diets. What is more, the discoveries of Shubin related in the third chapter of Your Inner Fish open for scientists a new world as far as medical science and the science of genetics are concerned. Perhaps human beings would be able to treat their deformed limbs with the genes of creatures from the animal world in the near future. Everything is possible in the mind of a scientist, just as God does not deny the fact that everything is possible if we believe Him.read more
A developed country takes anchor on the fact that its citizenry is well informed and highly educated people. Education breeds well informed individuals. Democracy and development stands at par with information since democracy stands under the premise that its citizens are intelligent enough to make their own decisions and are capable of leading the country towards development (Study in the USA, 2008).. As shown by the increasing influx of immigrants here in the United States taking a shot at the American dream, it is evident that they find our country a land of opportunity (CBS News, 2008). Plus the fact that more and more students choose to study here, we assume that we take pride in the quality of education that we have.read more
For years, brain imaging techniques had been developed since the time when human organs and skeletons were seen using X-ray, many doctors understood the need to identify and see inside the body without any surgical procedure done. X-rays were launched to display either two dimensional or three dimensional views of any part of the body. The tool known as “Computerized Tomography” or CT was the most popular imaging technique not until “Magnetic Resonance Imaging” or MRI came into the scene. It seemed that nothing could bit CT procedure and only those who believed in the potential of MRI had foreseen the possibilities of it being powerful than any other diagnostic techniques used to display pictures inside the body. It is capable of giving information about the condition of the tissues and organs of the body. It has more benefits than other methods, providing the details regarding the form and present status of the part being monitored. MRI figures out the defect in every detail that cannot be detected by CT scans. It shows that it is the best imaging method for distinguishing tumors in the brain and is also used to examine the role of the human brain by monitoring mental processes. It is used for detecting fractures in the spinal cord too. This method is installed and used in almost all hospitals all over the world and a trusted method by surgeons and doctors. For the past years now with the fast improvements done, MRI has come to be the preference for many applications.read more
Technology has come up with a lot of advances and further development in the lives of humans. Continued efforts of scientists, engineers and other professionals to design and develop tools to address the specific needs of people brought numerous recognitions from those who benefitted on their study. Though research and development, they came up with the realization of ideas and made what was impossible a few years ago. As a result many problems were resolved because of these inventions and ingenuities that humans established.read more
X-Rays are the rays of short wavelength. X-Radiation is a form of electromagnetic radiation composed of X-rays. X-Rays poses greater wavelength than gamma rays but shorter than Ultra Violet rays. X-Rays are also known as Roentgen Radiation (Peter, 1995). X-Rays are being used in number of fields; they are widely used for Radiography & Crystallography. X-Rays are form of ionizing radiation & can be dangerous in some cases. Patients usually wear metal sheet while facing X-Rays to weaken the harmful effects.read more
In the technology industry, operation and financial aspect is definitely are major concern of the web corporations. In this industry, the actual business practice is widely influence by various forces in able survive its competition. Nevertheless, the technology is one of the most influential industries on its stakeholders.read more
The geometry or shape of a molecule has a signifcant effect on the physical properties of the molecule. The chirality of carbon can determine its optical activity. Even if two compounds are of the same formula, one compound could be transparent the other opaque just because of a slight difference in geometry. The cis and trans configurations of fatty acids affect the melting point even if the fatty acids have similar formulas. The trans-fatty acids have a relatively high melting point and are likely to acculmulate and clog arteries as they stay in solid form (McMurry, 2003).read more
Most of the world`s industries are run by fuel. One of the popular sources of fuel is the fossil fuels which is a form of non-renewable energy. Fossil fuels are carbon-based fuels formed from the plants and animals that lived over 300 million years ago and deposited underneath the earth 's surface. The fuels are burned in order to release the stored chemical energy. Energy is important in the contemporary society as it enables us to perform the functions of the industries.read more
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