3.8.1.2 Leaf area and leaf area index (LAI) Leaf area of five randomly selected plants‚ was measured with the help of leaf area meter (Model LI-3100‚ USA) at 20‚ 40 and 60 DAS by destructive sampling from all leaves of the five sample plants (Sticker et al.‚ 1961). Plants were cut at the soil surface‚ leaves were separated from the plants‚ covered with blotting paper to keep the leaf intact and retain its original shape and were brought to the laboratory. Leaf area was measured immediately after
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ANALYSIS OF MOUTHWASH Background Information: Commercial mouthwashes are mixtures of water‚ alcohol‚ dyes‚ flavorings‚ and other compounds. In this experiment‚ you will use gas chromatography to determine the alcohol content of the mouthwash. Since the volumes of alcohol and water are not additive when mixed‚ a calibration curve must be used. It will provide the correction factor needed for alcohol-water mixtures. The calibration curve will be prepared by placing a known amount of alcohol
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Column and Thin-Layer Chromatography of Capsicum Frutescens L. Pigments John Cyril Abanto*‚ Vernalyn Abarintos and Clarice Gail Abella Department of Chemistry‚ College of Science University of Santo Tomas‚ Espana Street‚ Manila 1050 Date Submitted: September‚ 2010 ____________________________________________________________ _________________________________ Abstract: The experiment was done to separate and analyze the components of chili pepper. Chromatography was used because of its
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Stem and Leaf Plots Examples 1. A stem and leaf plot is a method used to organize statistical data. The greatest common place value of the data is used to form the stem. The next greatest common place value is used to form the leaves. 17 stem leaf 2. EXAMPLE: Make a stem and leaf plot of the algebra test scores given below. Then complete each question. 56‚ 65‚ 98‚ 82‚ 64‚ 71‚ 78‚ 77‚ 86‚ 95‚ 91‚ 59‚ 69‚ 70‚ 80‚ 92‚ 76‚ 82‚ 85‚ 91‚ 92‚ 99‚ 73 1st put the scores in numerical order. 56‚ 59‚ 64
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exchange Chromatography Ion exchange chromatography is a process for separating proteins and other molecules in a solution based on differences in net charge. Ion Exchange Chromatography relies on charge-charge interactions between the proteins in your sample and the charges immobilized on the resin of your choice. Ion exchange chromatography can be subdivided into cation exchange chromatography‚ in which positively charged ions bind to a negatively charged resin; and anion exchange chromatography‚ in
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I picked my own story for The American writer O. Henry The Name of story is: The Last Leaf a brief summary of the story: The short story took place in New York City where two friends - Sue and Johnsy - live‚ work in art in a poor apartment‚ and publish their drawings in magazines‚ and thereby earning their living‚ and like any other artist‚ they hope to draw a masterpiece one day. One day‚ Johnsy fell prey to pneumonia. The doctor visited her and told her friend-Sue- that Johnsy could be cured
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grow larger there leavs get smaller due to the fluid flow within the tree TABLE OF CONTENTS Part A: INTRODUCTION EXPECTAIONS‚ PREDICTIONS AND ASSUMPTIONS PAGE 3 DATA SECONDARY DATA – STEM AND LEAF PLOT PAGE 4 SECONDARY DATA – LINE GRAPH AND OGIVES PAGE 6 SECONDARY DATA – BOX PLOT AND HISTOGRAMS PAGE 7 SECONDARY DATA – MEASURMENTS OF RANGE PAGE 12 SECONDARY DATA – BELL CURVE
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Leaf Cutter Bees Leaf cutter bees‚ play a big part in the world. Not very many people know of their existence or what they actually do. They are very interesting little insects starting from there looks‚ actions‚ and how important their job is as a Leaf Cutter Bee. Leaf Cutter Bees; looks are very distinct. They are not like Honey Bees; they do not look like wasps or hornets. They almost resemble more of a beetle in a way. A beetle has a hard shell on their back and most beetles we think of
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The stylistic analysis of “The Last Leaf” by O’Henry The text under stylistic analysis is the short story “The Last Leaf” by O’Henry. William Sydney Porter was born on 11-th of September in 1862 in North Carolina. His mother died when he was three year old. Porter worked at drug store of his uncle. Then he went to Texas and tried many professions. For example rancher‚ bank teller‚ journalist‚ founding a comic weekly magazine The Rolling Stone. Then was employed by the Houston Post to write a humorous
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problem swept Canada : Ready-to-eat meat products from Maple Leaf were found to be contaminated by a virulent strain of listeria with an unusual high rate‚ leading to s oaring death reports. It was s aid that two thirds of Maple Leaf meat samples collected from Toronto hospitals and nursing homes tested positive for the pathogen (Cribb‚ 2008). The underlying ethical issues behind the whole thing a roused controvers ies broadly. Maple Leaf‚ the active agent in this case‚ used an “industry standard”
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