Science
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4,609 Essays on Science. Documents 3,901 - 3,930
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The Cobra Event by Richard Preston
“The Cobra Event”, by Richard Preston was incredibly intimidating book that left me in awe till the very last page. It starts off with what appears to be a part of biological experiment in secluded area which hints of immense power of biological weapon. Then we get a piece of history, in which President Richard Nixon confirms the power/danger of these weapons and ends the manufacturing of biological weapons. Then the main story folds out.
Rating:Essay Length: 785 Words / 4 PagesSubmitted: June 11, 2010 -
The Coca Plant
The Coca plant is in the Kingdom Plantae, the Phylum Magnoliophyta, the Class Magnoliopsida, the order Mapighiales, the Family Erythroxylacae, the Genus Erythroxylum, and the Species Erythroxylum Coca. The Coca plant originates in Northwestern South America particularly Columbia, but it can also be found in Peru, Venezuela, and Bolivia. The Coca plant can grows to a height of 7–10 ft, the branches are straight, and the leaves are green tinted ovals. The plant also has
Rating:Essay Length: 301 Words / 2 PagesSubmitted: March 23, 2010 -
The Competition Between the Two Green Algae:
Abstract This experiment tested the hypothesis that the pure algae populations of Ankistrodesmus and Chorella will show growth in the number of organisms, and the mixed population will establish a dominant species. Each population should also reach its carrying capacity. All of the populations had the same resources available. The sampling of 0.5ml of each population was used to count the number of organisms. A Neubauer slide and microscope will be needed to do
Rating:Essay Length: 1,514 Words / 7 PagesSubmitted: December 24, 2009 -
The Concept Analysis of Self-Efficacy
The Concept Analysis of Self-Efficacy Lori Lincoln, RN, BSN Theoretical Foundations of Practice NUR/513 Dr. Sharon Pontious University of Phoenix May 19, 2005 The Concept of Self-Efficacy Self-efficacy, for the purpose of this study, may be defined as a person’s optimistic self-belief. This is the belief that a person can develop the skills to perform new or difficult tasks to cope with changes in health and functioning. When a person perceives self-efficacy, it will facilitate
Rating:Essay Length: 1,885 Words / 8 PagesSubmitted: November 27, 2009 -
The Concept of Death
speech The Concept of Death To begin, it is necessary to pause for a moment and reflect on one's own attitude in relation to death and dying. Undoubtedly, we are programmed to accept the 'passing' of others as natural. Yet, even then, when death 'threatens' us personally, or anyone for whom we hold great affection, the emotional component comes into play and the objective 'death' becomes a very real and intense experience. This presentation is
Rating:Essay Length: 920 Words / 4 PagesSubmitted: March 16, 2010 -
The Conservation Effect
Animals are facing the first steps of their apocalypse every day. Humans destroying their habitats are the leading factor to why animals are becoming extinct. Three quarters of all the extinctions which have occurred in the last three hundred years were caused by humans. Rates indicate that we are likely to cause the eradication of a quarter of all the known species within the next 20 years if nothing further is done to protect theses
Rating:Essay Length: 1,973 Words / 8 PagesSubmitted: January 18, 2010 -
The Contribution of Instrumental and Imaging Technologies to the Diagnosis And/or Treatment of Clinical Problems Associated with the Knee.
Aspects of Medical Engineering The Contribution of instrumental and imaging technologies to the diagnosis and/or treatment of clinical problems associated with the knee. Abstract: Clinical problems of the knee can be diagnosed using instrumentation and imaging technologies. This is an important aspect as it identifies the specific disease and enables the application of the correct treatment. Imaging techniques include: X-ray, which illustrates abnormalities in bones. MRI scan, which create 3-dimensional pictures of blood vessels. And
Rating:Essay Length: 1,498 Words / 6 PagesSubmitted: February 4, 2010 -
The Coral Ecosystem and How It Is Changing
Coral reefs are one of nature’s most magnificent creations, filled with thousands of unique and valuable plants and animals. More than one quarter of all marine animals is dependent on coral reefs. Coral reefs are also a source of food and income for millions of people too. The coral reef ecosystems benefit humans commercially, recreationally and environmentally. Because of the complex interconnections between coral reefs, mangrove forests, sea grass beds, and many other different plants
Rating:Essay Length: 1,603 Words / 7 PagesSubmitted: April 12, 2010 -
The Correlation Between Cage Stereotypies and Basal Ganglia Dysfunction
Katie Harrell Dr. Whittaker AGR 101H 23 September 2006 The Correlation Between Cage Stereotypies and Basal Ganglia Dysfunction 1. Introduction and Problem Statement Since the first mouse was used in a lab, scientists have been curious why laboratory animals exhibit stereotypies. Stereotypies are the repeated, seemingly useless, motor behaviors many animals in captivity display. Although researchers could define the causation of a certain cage stereotypy on a physical level more fundamental, neurophysiological understanding of the
Rating:Essay Length: 1,330 Words / 6 PagesSubmitted: November 30, 2009 -
The Cystic Fibrosis Gene
Introduction: Cystic fibrosis is an inherited autosomal recessive disease that exerts its main effects on the digestive system and the lungs. This disease is the most common genetic disorder amongst Caucasians. Cystic fibrosis affects about one in 2,500 people, with one in twenty five being a heterozygote. With the use of antibiotics, the life span of a person afflicted with CF can be extended up to thirty years however, most die before the age of
Rating:Essay Length: 2,443 Words / 10 PagesSubmitted: January 12, 2010 -
The Cystic Fibrosis Gene
Erik Irre BIO 111 Jul 29, 1998 The Cystic Fibrosis Gene Cystic fibrosis is an inherited autosomal recessive disease that exerts its main effects on the digestive system and the lungs. This disease is the most common lethal genetic disorder in Caucasians, affecting one out of 2,500. On the bioethical front, CF was the first human genetic disease to be cloned by geneticists. The intent of this paper is to describe how the cystic fibrosis
Rating:Essay Length: 1,303 Words / 6 PagesSubmitted: February 6, 2010 -
The Cystic Fibrosis Gene
The Cystic Fibrosis Gene Introduction Cystic fibrosis is an inherited autosomal recessive disease that exerts its main effects on the digestive system and the lungs. This disease is the most common genetic disorder amongst Caucasians. Cystic fibrosis affects about one in 2,500 people, with one in twenty five being a heterozygote. With the use of antibiotics, the life span of a person afflicted with CF can be extended up to thirty years however, most die
Rating:Essay Length: 2,162 Words / 9 PagesSubmitted: May 30, 2010 -
The Dandelion
The Dandelion, of the genus Taraxacum and the class Magnoliopsida is a close relative of the Sunflower. The name, Dandelion comes from the French phrase for ЎҐTeeth of LionЎ¦, dent de lion, due to the likeness of the shape of the plantЎ¦s leaves and a lionЎ¦s canine teeth, whilst its generic name, Taraxacum Officinale was influenced by the plantЎ¦s many medical properties. Taraxacum meaning ЎҐdisorder-remedyЎ¦ and Officinale, stating that the plant has medicinal attributes. Other
Rating:Essay Length: 1,213 Words / 5 PagesSubmitted: January 13, 2010 -
The Dangerous Effects of Ozone
Triatomic oxygen, O3, is most commonly known as ozone. It has a resonance structure, and can be drawn in two different ways: O=O- O-O=O It is a bluish, explosive gas at room temperature, and has a boiling point of -119?C. It has a melting point of -193?C, and is a blue liquid. It's critical temperature and pressure are -12.1?C and 53.8 atm, respectively. It has a pleasant odor in concentrations of less than 2 ppm,
Rating:Essay Length: 778 Words / 4 PagesSubmitted: February 11, 2010 -
The Dark Ages - Were They Darker Than We Imagined
As we approach the end of the Second Millennium, a review of ancient history is not what you would normally expect to read in the pages of Universe. Indeed, except for reflecting on the AD 837 apparition of Halley's Comet (when it should have been as bright as Venus and would have moved through 60 degrees of sky in one day as it passed just 0.03 AU from Earth - three times closer than Hyakutake
Rating:Essay Length: 3,438 Words / 14 PagesSubmitted: January 8, 2010 -
The Debate over the Definition of Danger, and How It Effects Global Warming
The Debate Over the Definition of Danger, and How it Effects Global Warming” In the February 1st edition of the New York Times, journalist Andrew C. Revkin discusses rising threat of global warming, and more importantly, the disagreement between various nations and institutions upon the definition of “dangerously high global warming.” Revkin’s article, titled “Deciding How Much Global Warming Is Too Much,” brings to light the various failed attempts at creating a barrier at which
Rating:Essay Length: 517 Words / 3 PagesSubmitted: December 11, 2009 -
The Decaffeination of Coffee
Every day, millions of people around the world drink coffee. While most enjoy it in its natural state, as a mixture used without separation, many prefer ‘decaf’, as it does not provide them with unnecessary energy, and some cannot have excess amounts of the stimulant as it causes adverse effects. Therefore, the process of decaffeination is very important in today’s society. There are various ways in which coffee can be decaffeinated. The solubility of caffeine
Rating:Essay Length: 731 Words / 3 PagesSubmitted: April 5, 2010 -
The Decision Making Process
When reviewing the decision making process, I think the initial step is the most important of them all. Setting clear goals and objectives is a critical foundation for any successful planning effort. The planning process requires developing strategies for managing, operating and maintaining, in such a way in order to advance the long-term goals. It is important to establish goals and objectives with careful thinking about how they will be used as a foundation for
Rating:Essay Length: 285 Words / 2 PagesSubmitted: June 27, 2014 -
The Decriminalization of Medicinal Marijuana
The Decriminalization of Medicinal Marijuana For the past fifty years, heated debates over the topic of the decriminalization of marijuana have been a great controversy among politicians. Some politicians believe that marijuana for the use of medicine should be outlawed. As Congressman Bob Barr in his debate with radio talk show host Neil Boortz on May 14, 2002, stated, "There is no legitimate medical use whatsoever for marijuana. This [marijuana] is not medicine. This is
Rating:Essay Length: 884 Words / 4 PagesSubmitted: April 29, 2010 -
The Dehydration of a Bluestone
The Dehydration of a Bluestone February.28.2008 Purpose • To determine the value of X in CuSO4 • xH2O. Materials • Crucible • Blue Stone • Bunsen Burner • Bunsen Lighter • Test Tube • Water • Rheostat • Clay Triangle • Electronic Balance Procedure A clean crucible was taken and weighed on an electronic balance. The mass was then written down. 2g of bluestone was placed in the crucible and weighed. The mass of the
Rating:Essay Length: 667 Words / 3 PagesSubmitted: April 8, 2010 -
The Demonstration Report
The Demonstration Report Apparatus: The demonstration showed the Photovoltaic (PV) panels, the fuel cell and the wind power turbine. Procedure and principle behind: (1) Solar cell (solar cell car / touch ) For the solar cell, Photovoltaic (PV) panels convert light energy to the electrical energy by photovoltaic effect, then it change to different form of energy. Under the photovoltaic effect, the energy of the photon is transferred to an electron in an atom of
Rating:Essay Length: 364 Words / 2 PagesSubmitted: October 29, 2013 -
The Destruction of Our Environment
One of the greatest arguments of philosophy and the scholastic disciplines of the sort has been the debate on the degree of influence that nature has on the growth and development of human beings and the civilizations that define them. By examining the interactions of the environment and the living creations that reside within, one is able to examine and define the type of relationship in place between nature and the creatures of the world.
Rating:Essay Length: 1,847 Words / 8 PagesSubmitted: February 7, 2010 -
The Development of Cloning
The development of cloning Bioethics, which is the study of value judgments pertaining to human conduct in the area of biology and includes those related to the practice of medicine, has been an important aspect of all areas in the scientific field (Bernstein, Maurice, M.D.). It is one of the factors that says whether or not certain scientific research can go on, and if it can, under which rules and regulations it must abide by.
Rating:Essay Length: 821 Words / 4 PagesSubmitted: January 16, 2010 -
The Development of the Quantum Theory of the Atom
The Development of the Quantum Theory of the Atom The early beginnings of the quantum theory of the atom start with Niels Bohr, a German physicist. Many problems existed with the theories of the atom at his time, but many resources also existed for deriving more improved models. History previous to this needs to be covered in order to show how the Bohr model began and led to better models J.J. Thomson proposed that an
Rating:Essay Length: 359 Words / 2 PagesSubmitted: December 5, 2009 -
The Diagnosis and Management of Diabetic Coma
The Laboratory Diagnosis and management of Diabetic Coma Diabetes is any disorder of the metabolism which causes excessive thirst and the production of large volumes of urine. A coma is a state of unrousable unconsciousness. (Martin (2002)) There are two types of diabetes: Diabetes Insipidus (DI) is a rare metabolic disorder, the symptoms of which are the production of large quantities of dilute urine and an increased thirst. It is caused by a deficiency of
Rating:Essay Length: 1,650 Words / 7 PagesSubmitted: March 24, 2010 -
The Difficulties in Defining Whether a Person Can Be Mentally
In this essay an historical look at the perception of mental illness will be reviewed in conjunction with how society acuity towards mental illness has changed though time, it will then discuss the society current concept of mental health. A consideration of the current classification and diagnosis systems followed by a critical evaluation of the theoretical models used to understand and treat mental disorders, a study on how the stigma of mental health issues effect
Rating:Essay Length: 3,660 Words / 15 PagesSubmitted: January 27, 2010 -
The Dinosauria
The Dinosauria Dinosaurs, one of the most successful groups of animals (in terms of longevity) that have ever lived, evolved into many diverse sizes and shapes, with many equally diverse modes of living. The term "Dinosauria" was invented by Sir Richard Owen in 1842 to describe these "fearfully great reptiles," specifically Megalosaurus, Iguanodon, and Hylaeosaurus, the only three dinosaurs known at the time. The creatures that we normally think of as dinosaurs lived during the
Rating:Essay Length: 301 Words / 2 PagesSubmitted: November 14, 2009 -
The Discovery of Fluorine
The isolation of fluorine had challenged chemist for many years, taking the lives of at least two scientists in the process. Fluorine receives its name from the Latin, fluo, meaning flow. The first real attempt to free fluorine, was done by a chemist by the name of Humphyry Davy, between the years of (1811-1813). He first tried to liberate the element by using the chemical methods, but this failed. He then went on to try
Rating:Essay Length: 333 Words / 2 PagesSubmitted: November 13, 2009 -
The Disease - Malaria
The Disease…………… That lead everyone in for a great awaking. Malaria in humans is caused by a protozoon of the genus Plasmodium and the four subspecies, falciparum, vivax, malariae, and ovale. The species that causes the greatest illness and death in Africa is P. falciparum. The disease is transmitted by the bites of mosquitoes of the genus Anopheles, of which the Anopheles gambiae complex (the most efficient) is responsible for the transmission of disease in
Rating:Essay Length: 1,683 Words / 7 PagesSubmitted: November 30, 2009 -
The Disproval of Spontaneous Generation
From the beginning of time it was believed that living things could come from nonliving things. This process was known as spontaneous generation. However, in the middle of the 17th century and then through the next 100 years, this idea was disproved by three important experiments. We now know that a nonliving object or group of objects can not turn into a living organism. Spontaneous generation is impossible in the atmosphere that we have today.
Rating:Essay Length: 567 Words / 3 PagesSubmitted: January 16, 2010