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Shampoo, lotion, toner, face cream and fluoride toothpaste - just a few of the many products which we use daily, and which may have been tested on animals. Thousands of services flood the cosmetics aisle every year. For most of these products, animal testing was used at some point in its research and development. Though animal testing in research and drug development still remains common practice, even scientists now agree that alternatives to animal testing can and may help the non-public care and cosmetics industry. Wondering the other ways exist to test products as opposed to animal testing? Alternative methods have been cheaper, safer and supply faster results. It has been discovered that those with more weight and fat often die earlier that runners who're slim and healthy. Most obese people live a mediocre life. They cannot remain active throughout the day, develop fatness related diseases, become burdens to themselves as well as others, and therefore are less successful in everyday life. The social lives with the obese may also be inconsequential. All this makes it imperative that people remain slim and retain our overall health in order to life our everyday life to its fullness. The EGR system routes a number of the exhaust gases (6 ? 10%) from the EGR valve, last on the Intake System, and ultimately within the combustion chamber. The exhaust gases are inert i.e. they cannot burn in the combustion chamber; also, the exhaust gases take up a number of the space which would preferably be taken with the intake air. This reduces the volume of intake air readily available for the combustion process during each Power Stroke; which in turn decreases the peak combustion temperatures. This brings about lower NOx emissions. There are more uses of air cooled heat exchangers, like the upstream production, refineries and petro-chemical facilities. It can also be employed on situations rich in temperature, high pressure, corrosive fluids and environments. Moreover, air coolers could possibly be equipped and found in oil and coal refineries; compressor stations for gas pipelines; subsurface gas storage facilities; plants producing polychlorvinyl, polyethylene, glass fiber, biplastic; caustic soda plants; by-product coke plants and ammonia transportation and handling plants.