diseases can kill many people that are drinking water on the tap water and mostly on the drinking fountain; people might drink on a drinking fountain which is dirty because of the different people that are drinking and spiting their saliva on to it‚ bacteria can easily contaminate the water that is coming out from the drinking fountain. Bacteria’s are also found everywhere in the surroundings; even the sink in our home might have bacteria’s because of the dirty place‚ and in the school also have bacteria’s
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The poster for the first film gives very little away about the plot of the film‚ although it holds enough information to interest viewers. First of all‚ it contains lots of reviews from different newspapers and websites who are well known for reviewing the most popular movies. This in itself will interest followers of the website/newspapers‚ as the reviews positively reinforce the quality of the film. The reviews are enough to interest many film enthusiasts as they will be curious to experience the
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protocols. There identifying and implementing programs that addresses and mitigates the terrorist. The identification and implementation of these protocols provides and the new threat of terrorism has set into motions a new perspective on security‚ by establishing the National Response Framework (NRF)‚ the Threat and Hazard Identification and Risk Assessment (THIRA)‚ and the signs for identification of terrorist activity to provide a common set of standards. First‚ the National Preparedness System
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Experiment: Preparation and Identification of Dibenzylidene Acetone Purpose: Prepare dibenzylidene acetone by the famous Claisen-Schmidt condensation reaction. Learn the experimental skills of organic synthesis‚ separation‚ purification‚ structural characterization by instrumental analysis. Train the ability to solve the practical problems. Principle: Aromatic aldehydes can have aldol reaction with aldehydes or ketones which have α-hydrogen atoms‚ dehydrate to form high yield of α‚β-unsaturated
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Aims The purpose of the two experiments was to determine the fundamental effects that temperature has on the growth and survival of bacteria. During the first experiment five different bacterial broth cultures of Escherichia coli‚ Pseudomonas fluorescens‚ Enterococcus faecalis‚ Bacillus subtilis and Bacillus stearothermophilus were individually incubated at temperatures of 5‚ 25‚ 37‚ 45 and 55°C for one week in an aim to distinguish the effect temperature has on growth and survival of the five different
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-Unknown Mixtures Lab- Purpose: The aim of this experiment was to find out the two substances of the unknown mixture from salt‚ sugar‚ dirt‚ and baking soda by looking at its properties. Hypothesis: Find the unknown substance by testing it out by heating it‚ pouring water‚ vinegar‚ and observing it . Procedure: 1) Materials- * 100ml of water * Vinegar * Bunsen Burner * 2 beakers * 1 spatula 2) First‚ do steps (3-6)to find out the properties of salt‚ sugar
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However‚ the original manufacturer‚ Kaufmann Ltd.‚ has gone out of business‚ and specifications for the part are unavailable. The purpose of this experiment‚ performed by Ryan Nelson‚ Peter Glascor‚ Eric Flowr was to determine the identity of the unknown polymer by comparing its properties to properties of other known polymers. Most likely‚ the part is one of the five following polymers: polyethylene‚ polypropylene‚ polystyrene‚ polycarbonate‚ poly(vinyl chloride). These are all extremely common
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Macromolecules Lab Purpose: to determine a method of testing for macromolecules. Materials: Knowns: Unknown: Test Solutions: Glucose solution Unknown solution Iodine solution Gelatin solution Benedict’s solution Starch solution Biuret solution Oil Brown paper Water Procedure: 1. Create a data table. 2. Label 5 test tubes with known solutions. 3. Add 10-20 drops of each known solution to respective test tubes‚ do not mix pipets! 4. Add 3-5 drops of
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Please write an essay on the AFIS system. This is the Automatic Fingerprint Identification System. This should be in the order of 1500-2‚000 words. Bring out the main points of the system. E.g. History‚ who uses it‚ future developments. Also include technical information on how it works with advantages and disadvantages. Automatic Fingerprint Identification system (AFIS) is the biggest fingerprint and criminal history system in the world which operates 365 days a year. The system responds to requests
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Unit 6 Lab Report 1. Objective: To find the percent composition of water in an unknown hydrate. 2. Materials: Goggles‚ apron‚ evaporating dish‚ hot plate‚ and stirring rod 3. Procedure: get the mass of a evaporating dish‚ put a sample of the hydrate onto the evaporating dish and mass the dish with hydrate. Put the dish with hydrate on the hot plate on high heat. Break up any clumps that form during the heating process. Observe any color
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