Fatima Jamil
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In a world where you can be anyone, be yourself.
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Teflon
History Teflon was an accidental creation in 1983, by a former resident of New Carlisle, a young boy name Roy J. Plunkett, who took a new job in DuPont. He had done PhD from Ohio State University in 1936. In DuPont Company Plunkett area was refrigerants. In 1930s most of the chemicals that are used for refrigerants are hazardously explosives. They use chemicals like ammonia and oxides of sulfur as refrigerants. These are pretty toxic compounds and been leaking out of the refrigerants and cause harm to the nearby environment. So, the Company DuPont and General Motors comes up with an idea to produce non-flammable refrigerants, a kind of Freons named as Refrigerants 114. He was given a task detect non-toxic and non-combustible coolants, that can easily be used in refrigerants. One day he opened the fresh tank of containing TFE gas which he wants to deliver for experimentation. When he weighed out these tanks he found some material of white powder appearance. After a large number of attempts, he found a slippery powder, today it is known as Teflon. This is a fun kind of accidental experiment for scientist, which keeps scientist to work for long hours for further experiments to find out the compound structure and its properties.
By Fatima Jamil3 years ago in Education
Kyoto Protocol: Success or Failure?
INTRODUCTION Kyoto Protocol was adopted by UNFCCC and signed in Kyoto, Japan on 11 December 1997. It is a legal binding target for developed countries to reduce Greenhouse Gases emission. After a long delay, it finally comes under force in 2005, following Russia’s ratification s[6]. Presently 192 countries work under this treaty. United State America is the only country which never ratifies this treaty. In 2012, an amendment occurred in Doha called the “Doha Amendment”. During this amendment, Canada withdraws itself from this legally binding treaty. It is the only global treaty with binding measures to control Greenhouse gases .
By Fatima Jamil3 years ago in Education
Fatty Acids: A blessing to living body
Lipids are macromolecules comprises about 15-2-% of human body weight. Triglycerides are considered as the most important lipids share 85-90% of lipid mass. Triglycerides are stored in human adipose tissue and provide energy to the body. Triglycerides are known as highly concentrated energy stores. This energy can be anhydrous and reduced. We yield a 9kcal g-1 of energy from the complete oxidation of the fatty acids. This energy is much higher than the energy produced from oxidation of carbohydrates and proteins. The large difference in energy is due to the fact that fatty acids are much reduced than other biological compounds. Other major reason is that, fatty acids are non-polar and are present in anhydrous form. On the other hand, proteins and carbohydrates are polar compounds and found in hydrous form. We say that, 1g of glucose molecules binds with the 2g of water. Simultaneously, one gram of anhydrous fat is used to store energy that is six times higher than one gram of hydrated glycogen. Due to this universal fact, we consider triglyceride not glycogen as the major energy survival in evolution.
By Fatima Jamil3 years ago in Education
Which is better SI or CI engine?
Introduction of the internal combustion engine “Internal combustion engines are those types of engines in which combustion takes place with the help of an oxidizer like air, in the combustion chamber that is an integral part of the engine”.
By Fatima Jamil3 years ago in Education
