Science Essays
4,476 Science Free Papers: 1,141 - 1,170
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Direct Current Machine: Generalities
Direct Current Machine: Generalities A direct current rotating machine can operate indifferently as a generator or as a motor. In the first case it is called dyinamo, in the second one direct current motor. Its prevalent application is as a motor: there are applications of a medium-big power, with rated
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Dirty Dozen Case
From this report, I learnt that human error is the main contributing factor for most aircraft disasters, and that it is due to the Dirty Dozen, such as complacency, lack of knowledge and lack of awareness, that such incidents occur. The fact that the cracks on the fuselage were unable
Rating:Essay Length: 327 Words / 2 Pages -
Disadvantages of Cosmetic Surgery
Disadvantages of Cosmetic Surgery Warren St. John wrote an article about the death of a 42-year old Irish woman, Kathleen Kelly Cregan; her cause of death was having a face-lift in New York City. Mrs. Cregan told her husband that she was leaving only for business course in Dublin. Her
Rating:Essay Length: 647 Words / 3 Pages -
Disadvantages of Human Cloning
1. Health risks from mutation of genes - an abnormal baby would be a nightmare come true. The technique is extremely risky right now. A particular worry is the possibility that the genetic material used from the adult will continue to age so that the genes in a newborn baby
Rating:Essay Length: 700 Words / 3 Pages -
Discover and Gain Knowledge of the Effects of Osmosis on Cells
Objective: The purpose of this experiment was to discover and gain knowledge of the effects of osmosis on cells. In addition, this lab was also done to see how plasmolysis would affect the cells as well. The objectives were to note any observations of the appearance in the Elodea leaf
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Discovering the Origin of Cosmic Radiation
The Earth's atmosphere is being steadily bombarded with thousands of radioactive particles from the depths of space. Scientists have until recently been puzzled with the origin of these particles, but recent studies have found a likely source. With all the advances in technology since the discovery of these particles, we
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Discriminant Analysis of Metabolomics Data
1.1 Aims Metabolomics is a post genomic technology that seeks to provide a comprehensive profile of all metabolites present in a biological sample, the aim of which is to provide information about the organism or tissue under investigation. Characteristics in the 1H NMR spectra can be used for classification and
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Discuss the Way Gould Uses His Own Experiences to Make His Points.
1.) Discuss the way Gould uses his own experiences to make his points. Writing about one's own experiences is an effective method in conveying a point because it illustrates real life events which readers can relate to. Additionally, the intended audience is able to enter into the mindset of the
Rating:Essay Length: 515 Words / 3 Pages -
Discuss Your Medical Career Expectations as a Future Physician
As a potential medical student, I will strive to be a tremendous asset to St. Christopher's College of Medicine by devoting all my time and life to becoming an excellent physician. I believe that I am obligated to use my talents in a constructive manner, in a manner that benefits
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Discussion and Practical Application of Interpersonal Relations in Nursing Theory
Discussion and Practical Application of Interpersonal Relations in Nursing Theory Hildegard Peplau’s Interpersonal Relations in Nursing, published in 1952, emerged before the thrust of nursing theory development. Educationally, nursing students were discouraged from theoretical learning. Nursing was not considered a profession in 1952. Rather, nurses were viewed as physician helpers,
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Disease Related to Nutrition: Type 1 Diabetes
Disease Related to Nutrition: Type 1 Diabetes Type 1 Diabetes is most likely to be diagnosed among children and young adults. It occurs when the body does not produce insulin to help turn glucose into energy. Since sugar is the basic fuel for the cells to be energized, the body
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Disease's of the World
In today's world there are many dangerous disease's many people know about the disease's can talked about on a daily basis such as HIV, due to the fact that almost every person will either hear from the media or they will be thought about it in school when they are
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Diseases
Chronic Neuroimmune Diseases The Painful Dilemma Introduction Millions of Americans suffer from pain. Among the most tragic victims are those whose lives are consumed by chronic, intractable pain. Although narcotics can frequently help, they are typically avoided or given at inadequate levels. A number of factors are involved, including
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Diseases of the Nervous System Caused by Bacteria
Microbiology Diseases of the Nervous System Caused by Bacteria Jennifer and Jamie 4/18/2012 Nervous System Diseases Caused by Bacteria: Microbial diseases affecting the nervous system tend to be severe because of the vital tasks performed by the brain, spinal cord, and peripheral and cranial nerves. Infections can occur in the
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Dissection of a Cow's Eye
Introduction: In this laboratory, we set out to dissect a cow's eye and identify the different parts of eyes and their function. We were given the procedure to open the eye, as well as a sheet that told us what the components of the eye looked like. Procedure: We started
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Dissolution of the Theory of Spontaneous Generation
Spontaneous generation is the belief that some life forms are created from non-living things. It was an accepted theory to explain the creation of living things since the times of the ancient Romans to the early nineteenth century, when people began to become more skeptical of this idea. By the
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Distillation
In this lab, we are testing the two method of simple distillation and fractional distillation with toluene and hexane. We use Dalton's law of partial pressures, which is equal to the equilibrium vapor pressure, to help calculate the total pressure above the liquid in the system. Dalton's law of partial
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Distillation Lab
Distillation Purpose Distillation is a technique used for separating or purifying liquids. Distillation separates two liquids by heating the mixture and causing one of the components to vaporize and leave the mixture while the other is retained in the liquid states. Selecting a distillation technique depends on the boiling points
Rating:Essay Length: 485 Words / 2 Pages -
Distillation of Mixture of Ethyl Acetate and Butyl Acetate
Distillation of Mixture of Ethyl Acetate and Butyl Acetate Purpose: To separate two organic liquids, ethyl acetate and butyl acetate by simple and fractional distillation. With separated organic liquid Gas Chromatography is used to analyze subject. Chemical Equation: Ethyl Acetate Butyl Acetate Procedure: Obtain 10-ml ethyl acetate and 10-ml butyl
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Divergence, Curl, Line Integrals ((c) of M55 Upd)
Mathematics Second Long Exam 55 Exercises I. Divergence and Curl 1. Compute for the curl and divergence of the following vector fields. (a) F(x,y,z) = <x + lnyz,y + xz, z + sinxy> (b) G(x,y,z)=(x - y) ˆ i + (x + z) ˆ j + (y - z) k
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Dna
DNA is a term that has been used in science as well as in many parts of daily life. The general public knows that DNA is a part of our bodies but they may wonder what exactly is DNA? DNA is a term used for deoxyribonucleic acid and it is
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Dna
Presumptive testing is cheap, rapid and often portable, and gives the first indication of whether target substances might be present in a sample. The process can be heavily automated, often using an immunoresponse in combination with fluorescence for detection. It is not legally defensible, but is used to screen out
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Dna
Wednesday, April 4th 2006 By: Jacquelyn Logan Lab Partners: Jessica Amedick Josh Fucinski Jade Gianforte ABSTRACT: Starting with whole onions and then ending with a relatively pure preparation of DNA by isolating it from living plant tissue. By knowing the physical and biochemical characteristics of the genetic material the
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Dna
Joe Redner is known as the father of nude strip clubs. Redner is well known through out Florida for opening his strip club Mons Venus. Redner has lived in Florida for over 52 years. Redner grew up in Hillsborough County, and was married, with his children living in the area.
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Dna Analysis
PV92: DNA Analysis PCR Amplification and Gel Electrophoresis Deoxyribonucleic acid is a very important molecule for supporting genetic variation among species. It is a double-stranded molecule held together by weak bonds between base pairs of nucleotides (adenine, guanine, cytosine and thymine), and it encodes genetic information [1]. A large amount
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Dna and Rna - Deoxyribonucleic Acid and Ribonucleic Acid
Only a small fraction of our total DNA makes us different from gorillas, chimpanzees and other primates. An even smaller fraction makes one person different from the next. DNA Deoxyribonucleic acid and ribonucleic acid are two chemical substances involved in transmitting genetic information from parent to offspring. It was known
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Dna by Diet
Week 2-B Assignment: DNA by diet. SC 100 I002 FALL 06 Instructor: Tricia S Keiter February 10, 2007 I found some interesting research done concerning heredity and disease from two scientists at Duke University. They were examining the agouti mice species whom possess a specific gene different from other mice
Rating:Essay Length: 638 Words / 3 Pages -
Dna Chips and the Pharmaceutical Industry
DNA CHIPS AND THE PHARMACEUTICAL INDUSTRY INTRODUCTION When future historians look back on the greatest scientific advancements of the 20th century, they will without a doubt focus on only three events: the Apollo Moon landing, the invention of the microprocessor, and possibly the greatest scientific endeavor yet, genomics, the science
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Dna Evidence
DNA analysis has played a major role in the criminal justice system over the past few decades. As a matter of fact it has revolutionized the way in which law enforcement officials look at evidence collection and processing. DNA analysis has evolved from being considered a 'mad scientist' approach to
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Dna Extraction
DNA EXTRACTION In extracting chromatin from the cells of wheat germ there are seven steps to follow. The optimal cell to use would be the polyploidal eukaryotic. Eukaryotes have nucleus membrane-bound organelles, while prokaryotic does not. The polyploidal eukaryotic cell has DNA that is held in the nucleus while the
Rating:Essay Length: 589 Words / 3 Pages