X-ray diffraction has perhaps been one of the most critical and exigent discoveries of the 20th century. Early X-ray diffraction images for tobacco mosaic virus had been collected before World War II. By 1954‚ Watson had discovered from his X-ray diffraction images that the tobacco mosaic virus had a helical structure‚ and was able to apply this to his famous DNA structure research. It is so valued because it allows the structure of a crystalline material can be determined‚ based on the diffraction
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Triple X Syndrome‚ also known as XXX Syndrome‚ is a genetic disorder affecting the sex chromosomes. Females generally posses two X chromosomes‚ one from each parents‚ but females affected by Triple X syndrome possess three X chromosomes. On average‚ Triple X Syndrome affects 1 in 1000 females. Triple X syndrome generally doesn’t occur due to inheritance‚ but is rather caused by an error in the formation of the gametes known as nondisjunction‚ resulting in the extra X chromosome. Another cause of
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PHYS 3P91 X-ray fluorescence Electron Diffraction Professor: Dr. F. Razavi Lab Demonstrator: J. Korobanik Lab Partner: Adam Kober Author : Jasper D’Agostino SN : 4656534 Contents 1 Introduction 1.1 X-ray fluorescence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2 Electron diffraction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Discussion 2.1 X-ray fluorescence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.2 Electron diffraction . . . .
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Synthesis of 1-Bromobutane from 1-Butanol Reference: Discovering Organic Chemistry in the Laboratory; John R. Ganson Ph. D‚ Revised 2011 by Alfredo Mellace Ph. D www.Aldrich.com Purpose: To synthesize 1-bromobutane from 1-butanol via SN2 reaction. Alcohols are converted into the alkyl halides adding an aqueous solution sodium bromide. The sulfuric acid acts as a catalyst in converting the OH functional group of butanol‚ to a better leaving group. In order for this reaction to synthesis 1-Bromobutane
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doi:10.1038/nature07378 L ETTERS Correlation between nanosecond X-ray flashes and stick–slip friction in peeling tape Carlos G. Camara1*‚ Juan V. Escobar1*‚ Jonathan R. Hird1 & Seth J. Putterman1 Relative motion between two contacting surfaces can produce visible light‚ called triboluminescence1. This concentration of diffuse mechanical energy into electromagnetic radiation has previously been observed to extend even to X-ray energies2. Here we report that peeling common adhesive tape in
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Malcom X Javier Figueroa Lynn University Judaism There are several public figures in this world who are considered to be famous and some who existed a long time ago whose names are still alive and current. Some of them have different ideologies. One famous person who was known for his ideologies was Malcom X‚ an individual who was protesting against the racism of white people against the black population‚ and the unfair inequality that existed as a result of it. Unlike Martin Luther
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Experiment 1: Calorimetry Nadya Patrica E. Sauza‚ Jelica D. Estacio Institute of Chemistry‚ University of the Philippines‚ Diliman‚ Quezon City 1101 Philippines Results and Discussion Eight Styrofoam ball calorimeters were calibrated. Five milliliters of 1M hydrochloric acid (HCl) was reacted with 10 ml of 1M sodium hydroxide (NaOH) in each calorimeter. The temperature before and after the reaction were recorded; the change in temperature (∆T) was calculated by subtracting the initial temperature
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Tracie Emmerich Professor Debbie Seale Biology 101 TR‚ 8:30-11:30 am 3/6/2012 Triple X Syndrome Triple X Syndrome is a sex chromosome abnormality in which there are three X chromosomes instead of the usual two found in most females. Triple X Syndrome is also known as Trisomy X‚ Triplo X Syndrome‚ and XXX Syndrome. The first published report of a woman with a karyotype with a 47‚ XXX was by Patricia A. Jacobs in 1959 at a hospital in Scotland. Most people have 46 chromosomes‚ occurring in
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On February 21‚ 1965‚ Malcolm X was assassinated after delivering a speech to the Organisation (the spelling used by the group) of African-American Unity. Four men were involved in the assassination‚ but only one was convicted: Talmadge Hayer (a.k.a. Thomas Hagan). The theory accepted by most historians is that the government ordered the assassination of Malcolm X. There is significant evidence to support this theory. One key component in the government theory is the New York Bureau of Special
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The Autobiography of Malcolm X 1. What is the meaning of the title? Does it have a surface or deeper meaning? The title “The Autobiography of Malcolm X” is a book of Malcolm X’s life story‚ which is a powerful voice in our black history. During his lifetime he went through several significant changes in his lifestyle and beliefs. Many of these things were influenced by his travels‚ life events and who he came into contact with. 2. Identify the setting’s historical significance During Malcolm
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