SCIENCE INVESTIGATORY PROJECT GRADE VIII Acknowledgement We want to extend our sincerest appreciation to the following people who helped us to make this Science Investigatory Project. They are the people who contributed much for the success of this project. To God‚ for his gift of wisdom and understanding to us and for answering our prayers on time of needs. To our Science teacher‚ Mrs. Marlyn G. Carandang for teaching us the fundamental of research and investigatory writing and
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177 Air Bottle‚ Air Compressor‚ Refrigeration‚ Air Cond. & Evaporator: Air receiver: » Total capacity of air receivers must be sufficient to give at least 12 starts for reversible engine‚ and at least 6 starts for non-reversible engine‚ without refilling the receivers. » There must be two identical main air receivers and one emergency bottle for every vessel. Mountings: 1. Fusible plug; composition – Bismuth 50%‚ Tin 30%‚ Lead 20%‚ Melting point: 220΄F (104.4΄C). Fitted at the reservoir’s
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treatment processes use aerobic and facultative bacteria to break down the organic compounds found in wastewater into more stable products that will not harm the receiving waters. Wastewater treatment facilities such as lagoons or ponds‚ trickling filters and activated sludge plants depend on these aerobic bacteria to treat sewage. If the amount of DO present in the wastewater process becomes too low‚ the aerobic bacteria that normally treat the sewage will die. The process will not operate efficiently
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Jessica Beckman Bio 351 - General Microbiology Concordia University‚ Irvine February 24‚ 2012 Identifying Salmonella choleraesuis using Several Microbiology Lab Techniques The purpose of this study was to determine what an unknown bacteria was using several different microbiology lab techniques including an API test‚ an oxidase test‚ a gram stain‚ a hanging drop slide‚ and morphology identification. The unknown bacterium‚ which was contaminated with Serratia marcescens‚ was isolated by
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6 drops of sodium hydroxide in the second test tube. Pour test tube into test tube one. Record the results. Dump the contents of the first tube into the filter funnel that has already been set up for you. Rinse both tubes and return to the test tube holder. Leave all items as you found them at your station. The data we recorded was that bubbles formed on pencil led‚ and one of the batteries anodes turned slightly yellow. The reaction was H20- 2H (g) + O2. The next station was at number four. The
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The political opinions of voters in a given social system are an inevitable result of many directive factors that may include the education that a voter receives to the structure of political system they preside in. This political polarization in which voters exhibit distinctly different and extremely opposite political ideologies is especially relevant to modern voting systems such as the two party system in Australia and the United States‚ in which the opinions of more moderate voters are often
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directed into pipes or holding tanks. To avoid adding contaminants to the water‚ this physical infrastructure must be made from appropriate materials and constructed so that accidental contamination does not occur. 2. Screening (see also screen filter) – The first step in purifying surface water is to remove large debris such as sticks‚ leaves‚ trash and other large particles which may interfere with subsequent purification steps. Most deep groundwater does not need screening before other purification
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Experiment One Basic operation Laboratory rules 1) Prepare a lesson carnestly before the experiment. Clarify the related basic principle‚ sequence of the operation‚ and safety measures in the experiment. 2) Put on the working clothes before entering the laboratory. Record the experimental phenomena and data. 3) Keep the floor neat. Don’t throw anything into the water trough so as to avoid stops up. 4) After every experiment‚ the students being on duty shall take responsibility for cleaning
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Lab: Ionic and Covalent Bonds Objectives • Understand the differences between ionic and covalent bonds. • Connect ionic and covalent bonds with physical properties of matter. Introduction Sugar and salt look so similar that most people cannot tell them apart without tasting them. Chemically‚ white refined table sugar‚ sucrose‚ and salt are very different. An ionic bond between a positive sodium ion and a negative chloride ion creates a molecule of sodiumchloride (NaCl). Covalent bonds between
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STROKE(cerebrovascular accident/Disambiguation) A stroke‚ or cerebrovascular accident (CVA)‚ is the rapid loss of brain function(s) due to disturbance in the blood supply to the brain. This can be due to ischemia (lack of blood flow) caused by blockage (thrombosis‚ arterial embolism)‚ or a hemorrhage. As a result‚ the affected area of the brain cannot function‚ which might result: In an inability to move one or more limbs on one side of the body. Inability to understand or formulate
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