conscious albino rabbits with their eyes held open with clips at the lid. The progressive damage to the rabbit’s eyes is recorded at specific intervals over an average period of 72 hours‚ with the test sometimes lasting 7-18 days. Reactions to the irritants can include swelling of the eyelid‚ inflammation of the iris‚ ulceration‚ hemorrhaging (bleeding)‚ and blindness” (P. K. Nigam). Most of the time the animals are killed once the experiment
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Alyssa Caparelli Organic Chemistry 12A Professor Alston October 28‚ 2014 Isolation of Chlorophyll and Carotenoid Pigments from Spinach Purpose The purpose of this experiment was to isolate ß-carotene‚ chlorophyll-A‚ and chlorophyll-B from spinach using column chromatography. Spinach was dehydrated using ethanol‚ and the pigments were extracted with dichloromethane. The spinach extracts were dried using CaCl2. Then‚ the solid pigments were run through a column using a non-polar solvent‚ hexane
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Competitive Nucleophiles Introduction: The purpose of this experiment was to compare the relative nucleophilicities of chloride ions and bromide ions in two different reactions. One reaction involved n-butyl alcohol and the other involved t-pentyl alcohol. We performed the reactions and compared the percentages of alkyl chloride and alkyl bromide in the product. To perform this experiment‚ we used methods including heating reaction mixture under reflux‚ extraction using a separatory funnel
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SHAMPOO BY MANEESHA .R BSC PHYSICS DEFINTION: Shampoo is a hair care product used for the removal of oils‚
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IPRI Review: Document no: 5 Pakistan-China Relations Pakistan and China’s bilateral relations have stood the test of time. China has always provided political‚ economic‚ humanitarian and diplomatic support to Pakistan. However‚ for the last two years there has been a concerted campaign in the Indian and Western media to malign this relationship by blowing minor issues out of proportion. Chinese aid volume during the 2010 super floods‚ the pulling out of government owned Chinese bank from Iran-Pakistan
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to handle and response appropriately during attacks. (Smith‚ 2013) Common chemical agents used in attacks are usually pulmonary irritants‚ nerve agent and vesicant agent. Respectively‚ they can cause difficulty breathing‚ brain damage and painful blister on skin. Majority of the casualty are presenting with initial coughing symptoms as this indicates pulmonary irritant which can be caused by either nerve or chemical agent. Subsequently casualty further developed symptoms like diarrhoea‚ urination
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trees” (161). This ominous imagery directly portends Gatsby’s murder by Mr. Wilson. Mr. Wilson is described as gliding towards Gatsby in a sort of supernatural way‚ in keeping with Fitzgerald’s way of portraying something on the fringe of reality as a ghost. Wilson is on the fringe here in several ways‚ first through his belief that Gatsby killed Myrtle and second‚ his own mental state of a man so distraught that he is near death himself. Wilson kills Gatsby‚ the ultimate man of what is unreal‚ due to
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of willow tree bark‚ a bitter powder that could be used to reduce fevers. In 1829‚ salicin was isolated from willow bark and used as a pain reliever. Unfortunately‚ salicin was not very popular‚ since it was found to be very acidic and a stomach irritant. In 1897‚ a German chemist named Felix Hoffman was working for the Bayer chemical company. Hoffman was looking for a less acidic pain reliever that his father could take for his arthritis. His research led to the synthesis of acetylsalicylic acid
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Standards of length‚ Airy & Bessel points‚ desirable features of end standards‚ calibration of end standards by interferometry - NPL Gauge length interferometer‚ calibration of line standard by micrometer microscope‚ Photoelectric microscope and moir fringe technique‚ measurement of large displacements using lasers‚ photoelectric autocollimator‚ Types of interchange Module – II (15 hours) Limit Gauges: Taylor’s principles of gauge design‚ limitations of ring & plug gauges‚ position and receiver gauges
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down mutants. For example‚ when David‚ Rosalind and Petra are found out‚ Waknuk organizes a big group of people to go out and look for them. Finally once the mutant is captured and neutered‚ Waknuk exiles them into the Fringes‚ no matter how old they are Waknuk just drops into the Fringes and leaves them to their own devices. In Waknuk only the inspectors and higher forms of government have a say in whether something or someone is a deviant or not. Due to this they can decide that a deviant is normal
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