Science Essays
4,476 Science Free Papers: 841 - 870
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Chlamydia - a Sexually Transmitted Infection
CHLAMYDIA What is Chlamydia? Chlamydia is a sexually transmitted infection caused by bacteria. It is estimated that chlamydia is the most common STD with 3 - 4 million new cases each year. Rates of chlamydia are highest in the West and Midwest, part of the contry. How is it Spread?
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Chomium
One of the most controversial supplements on the market is chromium. In the body, its natural functions consist of potentiating the activity of insulin and influencing lipid and protein metabolism. It may also be involved in the formation of glycogen in muscle tissue and facilitate the transport of amino acids
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Chorid Plexuscysts
I have just reached the 30th anniversary of the first obstetrical sonogram I performed. Even having witnessed each of the technological advancements in sonography over those three decades, it is still difficult to comprehend the enormous improvements in image quality that have occurred. These improvements have brought sonography from a
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Christmas Tree Fires
The Holiday season is typically viewed as extending from late November to early January and it includes Hanukkah, Christmas, Kwanzaa, and New Year's Day. Using the latest 3 years of data, the yearly estimated fire loss for December 24, 25, and 26 is estimated at over $80 million. Each year,
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Chromatography Case
Introduction/Background The purpose of the experiment was to become familiar with the different methods and techniques of chromatography. Chromatography is "a method of finding out which components a gaseous or liquid mixture contains that involves passing it through or over something that absorbs the different components at different rates" (Bing
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Chromatography Lab
Problem How can you tell pigment separation by using Chromatography? Objective To prepare a chromatogram, separate pigments in a leaf and interpret the chromatogram. Hypothesis If I am to put a chromatography paper into a solvent, then it would separate the pigments depending on their Rf value. I think the
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Chromatography Lab Report Exercise 4
Exercise 4 Chromatography Glister Diadem A. Dollera – 201808525 Chem 31.1—Section EF BS Biology 1 Abstract Chromatography is one of the techniques on separating various substance from a mixture of compound. It involves two different immiscible phases in contact with each other—the mobile phase and the stationery phase. The major
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Chromatography of Dyes
ABSTRACT Separation and identification of components of a mixture was determined by using Chromatography. The components of a mixture have different affinities for a stationary phase as well as different affinities for a mobile phase. INTRODUCTION An extremely common technique by using two chemicals and filter paper can give you
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Chromatography of Pigments
Introduction Paper chromatography is a method using a chromatography paper to identify the many mixtures of one simple color. The word chromatography comes from the Greek words, "chroma," meaning color, and "grafein," meaning to write. The process of this experiment is to place a colored dot, such as marker ink,
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Chromosome Replication
Precise chromosomal DNA replication during S phase of the cell cycle is a crucial factor in the proper maintenance of the genome from generation to generation. The current "once-per-cell-cycle" model of eukaryotic chromosome duplication describes a highly coordinated process by which temporally regulated replicon clusters are sequentially activated and subsequently
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Chromosomes
The behavior of chromosomes during the cell cycle is similar in animal and plant cells. However, differences in cell division do exist. Plant cells have no centrioles, yet they have bundles of microtubules that converge toward the poles at the ends of a spindle. Cell walls in plant cells dictate
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Chronic & Acute Disease - Diabetes
Chronic & Acute Disease Paper SCI 100 Chronic & Acute Disease - Diabetes "In the last 15 years, the number of people in the United States with diagnosed diabetes has more than doubled, reaching 14.6 million in 2005. Although more than 20.8 million Americans have diabetes, 6.2 million do
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Chronic Disease
Diabetes: An incredibly scary word that causes most people to cringe when heard; especially if it happens to be prevalent in an individual’s family history. If faced with the possibility of having diabetes the best thing to do is to become informed about the chronic disease by talking to a
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Chronic Disease Paper
Chronic Disease Paper A chronic disease is one that has symptoms that recur over and over, and can become better or worse over time. These types of diseases, “…cannot generally be cured, but an individual can often minimize the negative effects of a chronic disease through sane, healthy living and
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Cincinnati Water and Air Pollution Plan
Cincinnati Water and Air Pollution Plan April 1, 2007 Air and water pollution has long been a concern in the major cities of the United States but our concern should not end there. Other cities and even small towns are suffering from the effects of pollution. Cincinnati, Ohio is
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Circuits 1 Lab Formal Project
UNIVERSITY CIRCUIT I LAB EEL 3111L FORMAL REPORT #2 Based On: EXPERIMENT #5 INSTRUCTOR: XXXXXXX I. ABSTRACT The following experiment confirms the validity of the Superposition Theorem. In the experiment in order to acquire the results by means of mathematically deriving them, one must use not only the Superposition Theorem
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Circular Motion Labs
Hypothesis: I can calculate a believable μ for an incline plane ride. Introduction: Fll is not a real force, but merely the sum of the normal force and weight. Normal force is the force of the object parallel to the surface, and the weight is mass multiplied by gravity on
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Circulatory Structures Lab Report
Circulatory Structures The body's circulation has two parts, with the heart acting as a double pump. Blood from the right side pump is dark red (bluish) and low in oxygen. It travels along pulmonary arteries to the lungs where it receives fresh supplies of oxygen and becomes bright red. It
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Circulatory Syatem
Circulatory System A simple definition for the circulatory system would be that it is the main transportation and cooling system for the body. Red Blood Cells have an important job in this system in that they carry all sorts of packages that are needed by all the cells in the
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Circutory System
Brenton Stevens Global Part B-Mexican Immigration Imagine if you were in a place where political siege and a lot of working opportunities were not available .In this situation many Mexican immigrants came to the United States of America. Today many Mexican Immigrants occupy a unique place in America's framework because
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Cirrhosis of the Liver
Cirrhosis is the 11th leading cause of death by disease in the United States. Almost one half of these are alcohol related. About 25,000 people die from cirrhosis each year. Description/Definition Cirrhosis is a consequence of chronic liver disease characterized by replacement of normal, healthy liver tissue by fibrotic scar
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Civil Engineering
Civil Engineering Name: Institutional Affiliation: Instructor's Name: Date Due: Purpose of the Report The aim of this task is to determine how much a loaded pin-jointed structure deflects experimentally, while comparing it with the deflection calculated theoretically, using virtual work. Background (introduction) Various forms of the plane trusses collectively are
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Civil Liberties and Civil Rights
Civil Liberties (And how they differ from civil rights) "If the fires of freedom and civil liberties burn low in other lands, they must be made brighter in our own. If in other lands the press and books and literature of all kinds are censored, we must redouble our
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Civilization and the Importance of Iron and Oxygen
Steel is used everywhere in our daily lives, but we are not quite sure where it came from. Even though we know it is extracted from an iron ore, most of us may not know how an iron ore looks like, much less how it has been generated. This time,
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Clasification of Galaxies
http://www.astro.princeton.edu/~frei/Gcat_htm/cat_ims.htm Princeton runs the site. We had to do a series of modules that had us by shape and number of stars, identify the classification of a galaxy. In 1926, an astronomer named Edwin Hubble decided to classify the galaxies, grouping them according to some logical scheme. He could have
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Classes of Chemical Reactions
Classes of Chemical Reactions Whenever a reaction takes place, energy is changed as well when the substances react chemically. Scientists have taken these changes in energy and generalized them. Scientists can take these generalizations and discover more about the nature and tendencies of matter. In this lab, the purpose was
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Clean Air
People are mostly unaware of the air that is surrounding us because it is usually invisible, odorless and tasteless when in its unpolluted state. One becomes aware of the air when the wind blows, when the temperature changes, or when visibility is reduced (Palomba, 1979). Polluted air, normally, reduces the
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Climate Change
Global climate change has positive and negative effects on marine and terrestrial ecosystems. The cause of global climate change is said to be because carbon dioxide is being emitted through the large scale burning of oil, coal and gas, with an additional contribution coming from clearing of tropical forests and
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Climate Change
The government of Tuvalu, a Pacific Island nation, made a plea last summer for countries to take in Tuvalu evacuees, fearing a rising sea level will ultimately sink the country. New Zealand is considering the request. Lowland flooding and salt-water intrusion into drinking water are already happening. Researchers at Iowa
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Climate Change
Burning has been important to people ever since early humans learnt how to generate fire. Wood turns to ashes when it burns and some metals become soft powders when they are heated. To the 17th century scientists Johann Becher (1625-1682) and Georg Stahl (1660-1734) there was a clear explanation for
Rating:Essay Length: 569 Words / 3 Pages