Toxicology testing

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    Aroclor 1242 Case

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    chemicals that did not even exist until 1976, the process that led to the 1983 NAS risk assessment paradigm. The fact that NCR had phased out Aroclor 1242 from its entire product line well before this timeframe demonstrates corporate responsibility during a period of rapidly expanding awareness concerning multifaceted hazards posed by environmental chemical pollution. 2. Hill Top Research Institute, Inc. (Hill Top) conducted dozens of toxicity studies for NCR to assess the potential toxicity of NCR’s CCP, its components, and a replacement for its Aroclor 1242 solvent. These tests, when considered collectively, demonstrated that CCP and its components had low to negligible toxicity. However, to show that NCR should have known from the testing program that PCBs were toxic to animals, Dr. Rodricks selectively discusses only the two studies that report liver effects. In fact, according to the pathologists reviewing the test results, the liver toxicity could not be attributed to the test material because of the lack of a dose-response relationship and the presence of a parasitic infection in the animals that confounded the results. Thus, contrary to Dr. Rodricks’s assertions, NCR had no scientifically credible reason to conclude that the potential toxicity of CCP and its components would likely result in risks at environmental levels of exposure. 3. Dr. Rodricks opines that NCR should have known of the risks from PCBs to human health and the environment from the time it…

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    Poison Control, Seizures and Tourniquets After taking this course in first aid, has proven to be very useful to people from all walks of life, like the busy parent and working professionals, that I am. There was many thing that I learned from taking this class, but the three things that I found interesting and or could be useful to have up to date knowledge about are, poison control, seizure and tourniquets. If you took a first aid class prior to 2010, like I did then, there’s a reasonable…

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    Lead Lingers Case Study

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    Hello Dr. Julian, Thank you for reading my discussion post case study # 2, and perspective question. Lead poisonousness is a global problem, while arrays of research information indicated a deterioration in the predominance of upsurge blood lead echelons in children from the developed world, lead lingers as a widespread avoidable ecological health hazard. The CBC analysis has an enormous effect on lead poisoning, the CBC laboratory appraisal answers arrays of question-related to quantity of…

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    Skin Peeling: A Case Study

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    (Office of Environmental Health Hazzard Assessment, 2015). Effects of Animal Exposure As previously stated animals and humans are both affected by phenol exposure. Animals have exhibited the same types of side effects as humans. Animals are exposed to phenol the same way as human exposure; via inhalation, oral, and direct contact. Through inhalation exposure animals have experienced the following: • pulmonary damage • myocardial injury • liver damage • renal damage • neurological effects…

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    Pesticides In Society

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    The use pesticides are widely used in our society today. People today use it to exterminate unwanted pests, such as rodents, insects and molds. There are initially three categories of pesticide substances: insecticides, herbicides, and fungicides—all of which specializes in the way it destroys certain pests. Insecticide fights against insects that “feed on crops, leaves, roots, and other parts of plants” (Naveen et al 125). This is the type of pesticide that may be used in most parks, gardens,…

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    is not my case. For instance, I have become aware that this sensation in my nose is not always present. But on the contrary, it is usually more sensitive when I am in an area that holds a large amount of automobiles traveling around. This realization has shown me that the reason for my, so called problem, is caused by the excessive amount of emission being released by vehicles into the open air, thus explaining why my nose burns. In addition to this, I would like to make it clear that I am…

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    Lead Poisoning Essay

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    Lead. Why should we care? Lead, it surrounds and penetrates, it binds in water pipes and the walls of homes. With lead having been outlawed for several years now it still seems to be a real big problem in America. despite being aware of the problem many Americans and lawmakers seemed to have simply ignore the problem and pretend it wasn’t there. It wasn’t until early 2016 that the public took interest when the water in Flint, Michigan was laced with lead and soon there were reports…

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    Subject Organisms For this experiment, I used Daphnia magna and Daphnia pulex that was cultured from stocks from Aquatic Bio Systems Inc. (Fort Collins, CO). Each species was cultured individually in 900 mL glass jars filled with moderately hard water. I created moderately hard water using the recipe as follows: 0.473 g CaSO4 , 0.959 g NaHCO3 , 1.223 g MgSO4 • 7H2O , and 0.039 g KCl per 10 L of deionized water. All references to water for the remainder of the paper refers to moderately hard…

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    Lipstick and Lead Poisoning Throughout history many unhealthy substances, including lead, have been used as ingredients during the various times in the history of makeup. Modern day cosmetics are more controlled, regulated and their ingredients and the potential side effects are more fully understood. However, recent research by the Campaign for Safe Cosmetics and the Food and Drug Administration (FDA) indicate that there are approximately 400+ best-selling lipsticks on the market today that…

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    This was caused from lead based paint, and it led to the banning of lead-based paint in many nations, although not in the US. (Landrigan, Philip). While we don’t know what the reasoning of the epidemic was, we can assume it was in younger children that explore their world with their hands and mouth. As a parent, we watch our children put this toy in their mouth, or pick something off the floor and put it in their mouth. We try and correct it but sometimes we don’t notice little Jane just…

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