such as 0.2% Offset Proof Stress‚ Ultimate Tensile Stress and Young’s Modulus of cold-rolled steel. This material will be used by Ace Flying Fox Ltd for the purpose of building a prototype supporting gantry which has to sustain a maximum stress of 670MPa. 2 METHODS Five samples of cold-rolled steel of 50mm gauge length‚ 3mm thickness and 12.5mm width are tested to AS 1931-2007 Metallic Materials – Tensile Testing at Ambient Temperature with SHIMADZU Tensile Strength Tester Machine. Fig 1. SHIMADZU
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Biology 10 Vinegar Eel Lab Adam Dorner 1) The most toxic metals were silver‚ lead and iron‚ all killing the eels in under four minutes‚ with silver taking only 1 minute and 40 seconds to kill the eels‚ and only 13 seconds to make the eels stop forward motion. Strontium wasn’t effective as after 5 minutes of exposure to it‚ the eels hadn’t died or stopped forward motion. 2) a) The accepted toxicity varies from metal to metal. The accepted toxic level of lead is 0.0012 parts per million‚ however
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Bio Lab Report Title: Gram-Negative and Gram-Positive contamination in yogurt. Introduction: There is bacteria that is beneficial and harmful in the human. Yogurt was choosed to be the best example that contains this bacteria. What happens to be the difference between these two types of bacteria‚ and how are they harmful? The bacteria is considered “Gram-Negative‚” and the substance is considered contaminated when there is more negative bacteria than positive bacteria. This will prove or disapprove
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TimeLine of Genetics 1750 B.C.E. The Sumerians brew beer. 500 B.C.E. The Chinese use moldy soybean curds as an antibiotic to treat boils. C.E. 100 Powdered chrysanthemum is used in China as an insecticide. 1590 The microscope is invented by Zacharias Janssen. 1663 Cells are first described by Robert Hooke. 1675 Antonie van Leeuwenhoek discovers bacteria. 1797 Edward Jenner inoculates a child with a viral vaccine to protect him from smallpox. 1830 Proteins are
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a) Round Yellow (RRYY) and wrinkled green (rryy) The cross between them RY RY RY RY ry RrYy RrYy RrYy RrYy ry RrYy RrYy RrYy RrYy ry RrYy RrYy RrYy RrYy ry RrYy RrYy RrYy RrYy So all the progeny are Round‚ Yellow with the genotype RrYy (F1 plants) Now for the F2 generation‚ RrYy is mated with itself (RrYy) RY Ry rY ry RY RRYY RRYy RrYY RrYy Ry RRYy RRyy RrYy Rryy rY RrYY RrYy rrYY rrYy ry RrYy Rryy rrYy rryy Therefore‚ the genotypic
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Genetics of Drosophila First‚ Drosophila is the common fruit fly. The common fruit fly is some of the best organisms to study for genetic research and experimentation. This is true for a few reasons‚ the first of which is the small number of chromosomes which is 4‚ and that we have identified the genome. This means all traits are known and we can figure out where mutations take place. The second reason is the fly’s ability to reproduce quickly. A new generation is produced every week‚ allowing
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technological advancements to society and these have also contributed to the current genetic revolution‚ which promises to do for life what computers did for information. This increasing power and accessibility may one day give parents the option of genetically engineering the "designer baby". This may be used to spare the unborn from disease or‚ possibly‚ make them tall‚ intelligent and blessed with any desirable traits. Genetic engineering has given humans the power to alter the very basis of life on earth
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but isn’t (Ghost‚ nonexistent‚ and astrology) Ad hoc immunizing hypothesis- A loophole that defenders a theory use to protect their theory from falsification ( reading others’ mind or forecasting the future and failed to perform when brought into a lab. Patternicity- Detect meaningful patterns in random stimuli (when eating a certain food and getting sick than relating sickness to food‚ which may have no connection) Terror management Theory- Theory proposing that our awareness of our death us with
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element TPA-25 was tested in the experiment through the examination‚ observation‚ and analysis of population alleles distribution under the Hardy-Weinberg Theory of Genetic Equilibrium. Alu elements affect the genome by causing insertion mutations‚ recombination between elements‚ gene conversion‚ and alterations in gene expression. In the lab PCR was used to amplify a short piece of DNA from human genome which allowed us to look for a DNA sequence called an Alu element. Electrophoresis was used to separate
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AP Bio Essay #1 To address this problem created by the lab tech‚ I would set up an experiment like the one we did in AP biology to identify the molarity of the unknown sucrose solutions. First I would pour an equal volume of each solution into beakers labeled A‚ B‚ C‚ and D. I would also have a beaker of the same amount of distilled water to serve as a control for the experiment. Then I would obtain several baby carrots‚ 4 per beaker. I would mass the groups of 4 potatoes before placing them
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