Comparison between MPN and E coli Petri film: The use of E.coli petrifilm seems more reliable than MPN since the value of MPN is less than E.coli petrifilm in the same group. It showed that MPN method was underestimated the total coliform and E.coli numbers. The Most Probable Number test methods described in this Practical provide guidelines for detection and enumeration of bacteria of food and water origin. Then we can prevent food borne infections and diseases occurring more commonly. Disadvantages
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Running head: Two Rivers Wastewater Treatment Project Wastewater Treatment Project Zoe French Biology 111 Abstract Municipal wastewater treatment plants were suspected to be reservoirs for antibiotic resistant bacteria so a study was conducted. In the study, two samples were collected from a local Wastewater Treatment Plant. The samples were taken at different stages of treatment so one of the samples in the study is untreated, and should contain a greater amount of antibiotic resistant
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glass. Use the scalpel to make your cut for experimental planaria #1. Measure and record the length of the anterior and the posterior pieces. Gently place the separated or cut planaria back in the Petri dish that is labeled according to them. Make sure there is water in the Petri dish. Cover the petri dish and place it in a shady area at room temperature. Clean up your lab area and return all materials. Bumrungkul 12.Measure and record the growth of the Planaria every two - three
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to study the impact of Aspergillus flavus on groundnut seeds was conducted in the laboratory using the blotter method. Groundnut seeds sample from Mutsamba were provided and four petri dishes were prepared containing each ten seeds placed on two to three sheets of wet (but not dripping with water) blotter papers. The petri dishes were incubated in the laboratory for two weeks. The results had shown that Aspergillus flavus was the seed borne fungi detected affecting the germination of seeds with 23
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the ants on ice for a minute until they stopped moving. Then, we added the larvae and the workers to a dental stone nest. This dental stone nest consists of a petri dish filled with dental stone. Also, the dental stone nest had an embedded water reservoir containing a small hole that can be filled with water. For behavioral assays, the petri dish nest was covered with a solid lid to keep
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the slaters and their responses Equipment: * 3 Petri Dishes * Craft Knife * Masking Tape * Blu-Tac * Silica Gel Packets * Cotton Wool * 15 Slaters * Stopwatch/Timing Device * Pen & Paper Final Method: (Experiment conducted in a room with constant light source and temperature) 1. Get 3 Petri Dishes, cut 2 holes in one and 1 hole in the others, make the hole about 1cm wide 2. 3 2 1 Tape Petri dishes together, aligning the holes so that you end
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We had one Petri dish that was our control, which was streaked with E.coli and was kept at normal room temperature and normal lighting. The second Petri dish was also streaked with E.coli and kept at room temperature and normal lighting, but six piles of salt were added to the Petri dish. The third Petri dish was also kept at room temperature and normal lighting, but a thin layer of coffee (contains caffeine)
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EURIDIS Research Monograph SCHEMATIC EVALUATION OF INTERNAL ACCOUNTING CONTROL SYSTEMS Kuo-Tay Chen* and Ronald M. Lee# * Department of Management Purdue University at Calumet Hammond, IN 46323 U.S.A. chenk@pucal.bitnet # Erasmus University Research Institute for Decision and Information Systems (EURIDIS) Erasmus University Rotterdam The Netherlands rlee@fac.fbk.eur.nl ERASMUS UNIVERSITY RESEARCH INSTITUTE FOR DECISION AND INFORMATION SYSTEMS Schematic Evaluation of Internal Accounting
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Growth of Microorganisms Culturing is the growing of micro-organisms in prepared media in the laboratory. The prepared medium is called the ‘culture medium’. Bacteria, fungi and algae grow easily in test-tubes, flasks or Petri dishes of culture media. Virus on the other hand, can only grow and multiply inside living cells, so they cannot be grown in a culture medium. Micro-organisms are able to increase in size and multiply in number of cells. The growth of micro-organisms is measured based on
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Introduction to the Chemical Analysis of Water Samples Each group will collect a fresh water sample from campus according to directions provided form your instructor or TA. You will learn how to use several pieces of equipment and several chemical kits in order to analyze the water sample. Each group may split up the tasks however it sees fit- however, each person in the group is expected to be able to complete any and all of the tests performed, with directions of course! Make sure that
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