Science
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4,609 Essays on Science. Documents 991 - 1,020
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Comparison Between Light and Electron Microscope
The introduction of the microscope as a tool for the biologist brought about a complete reappraisal of the micro- composition of biological tissues, organisms and cells. In the infancy of its application to organic materials, it was the implement of anatomists and histologists in particular, where previously unimagined structures in cells were revealed. More recent developments in biological specimen preparation have come from biochemists and physicists who have used the microscope to examine cells and
Rating:Essay Length: 2,180 Words / 9 PagesSubmitted: January 8, 2010 -
Comparison of Three Websites
Comparison of Three Websites 1. American Cancer Society Organization- Overall the American Cancer Societies website has a professional look to it and overall it is well organized website that millions of people travel to all the time in order to find information that was once hidden. Layout In the first row of the website there is a phone number that is there and it is in a green color to get the readers attention. This
Rating:Essay Length: 1,419 Words / 6 PagesSubmitted: March 30, 2010 -
Competition
In order to beat the German Nazis in creating the first atomic bomb, the Manhattan Project was created and funded by the US government. The invasion of Poland had officially sparked the start of WWII. After the invasion, Germany’s leader, Adolf Hitler, had announced to Great Britain that a weapon was going to be created in “which there is no defense.” British intelligence got right onto that statement. After analyzing, they had four conclusions. They
Rating:Essay Length: 275 Words / 2 PagesSubmitted: January 14, 2010 -
Competitive Inhibition
Introduction Enzymes are protein catalysts that promote and regulate chemical reactions within cells. Enzymes are not used up in the reactions that they aid and can be used to catalyze a second set of substrates once it completes the reaction for a first set of substrates. There are many enzymes present in all cells, each with a specific structure and function. The composition of a protein determines its structure and its function are based on
Rating:Essay Length: 1,773 Words / 8 PagesSubmitted: February 11, 2010 -
Components of Healthcare
As the healthcare system has grown and evolved to the entity we know today, it has been developed into a multifaceted being indeed. Though what appears to be our national healthcare system, a unified and aligned system, it really is not. Americans enter and are cared for by various spokes of the wheel that is truly our healthcare system. These Americans hail from all walks of life, Middle-Income America, the unemployed and uninsured, military men
Rating:Essay Length: 853 Words / 4 PagesSubmitted: January 24, 2010 -
Comprehend Decision Making and Problem Solving
COMPREHEND DECISION MAKING and PROBLEM SOLVING I. Define decision making Decision making A complex, cognitive process often defined as choosing a particular course of action. This implies that there was doubt about several courses of action and that a choice was made to eliminate the uncertainty. ( Lancaster) A systematic, sequential process of choosing among alternatives and putting the choice into action. Decision making is a process that involves steps or actions that one might
Rating:Essay Length: 984 Words / 4 PagesSubmitted: April 8, 2010 -
Computer Graphics
Computer Graphics When I think of art I think of great artists of the past. Artists that have spent practically all their lives to produce visually stunning pieces of work. Artists such as Michelangelo, who spent 15 years of his life to finalize a painting on the ceiling of the St. Peter’s Cathedral. When I think of art, I think of the legendary sculptures of the classical era. Artists then envisioned a final work from
Rating:Essay Length: 1,349 Words / 6 PagesSubmitted: June 2, 2010 -
Computer Literacy
"What are the costs of computer literacy? Some people argue that there are no such costs, but I believe there are a few which may be relevant. Does computer literacy affect the way we communicate, and if so, is this necessarily a bad thing? What is our future, as computer literacy becomes a necessity? What are the personal, financial, and social costs, as computer literacy becomes a necessity? According to Webster's New World dictionary, literacy
Rating:Essay Length: 1,171 Words / 5 PagesSubmitted: January 29, 2010 -
Computer Science (history)
The early foundations of what would become computer science predate the invention of the modern digital computer. Machines for calculating fixed numerical tasks, such as the abacus, have existed since antiquity. Wilhelm Schickard built the first mechanical calculator in 1623.[4] Charles Babbage designed a difference engine in Victorian times (between 1837 and 1901)[5] helped by Ada Lovelace.[6] Around 1900, the IBM corporation sold punch-card machines.[7] However, all of these machines were constrained to perform a
Rating:Essay Length: 424 Words / 2 PagesSubmitted: January 28, 2010 -
Computer Systems and Their Shortcomings
Computer Systems and their Shortcomings Well Psychotic wrote one of the most helpful unix text files in cyberspace but with the mail that we received after the release of our famous 36 page Unix Bible we realised that unix isn't for everybody so we decided that we should write on another aspect of hacking..... Virtual Circuit and Psychotic is proud to release, "Hacking Webpages With a few Other Techniques." We will discuss a few various
Rating:Essay Length: 1,676 Words / 7 PagesSubmitted: January 9, 2010 -
Computer-Aided Design of Heavily Saturated Dc Motors
COMPUTER-AIDED DESIGN OF HEAVILY SATURATED DC MOTORS Antonio Savini and Giancarlo Fasola Abstract - The paper deals with problems of computeraided design of a DC motor used as starter on vehicles. A two-dimensional finite element analysis of the magnetic field in the presence of heavy saturation is shown to be the fundamental tool for design considerations, enabling very useful suggestions for optimizing the motor performance to be drawn. The results, in particular, show the influence,
Rating:Essay Length: 1,924 Words / 8 PagesSubmitted: May 12, 2010 -
Computers and Thoughts
Computers and Thoughts For decades mankind has been privileged to witness its ascension to levels of civility and progress far above any thing we have yet seen. Medicine is far more advanced than any record we have of previous civilizations, and with concerted world-wide economic plans, this advancement is proliferating in as many places as possible. But not only is medicine advanced, so is the technology it employs - thinking machines, super-computers, lasers, all manner
Rating:Essay Length: 446 Words / 2 PagesSubmitted: January 28, 2010 -
Computing Protocol
Report Plan A protocol can also be described as a set of rules or instructions. Protocols may be implemented by hardware, software, or a combination of the two. At the lowest level, a protocol defines the behavior of a hardware connection. The Advanced Research Projects Agency Network (ARPANET) developed by ARPA of the United States Department of Defense was the world's first operational packet switching network, and the predecessor of the global Internet. Packet switching,
Rating:Essay Length: 1,389 Words / 6 PagesSubmitted: May 10, 2010 -
Concentration Affects the Rate of Oxygen Production When Raw Liver (catalyse), and Hydrogen Peroxide Is Mixed
Preliminary Experiment (4% yeast concentration) Hydrogen peroxide volume – 5 cm3 Water Volume -0 cm3 Concentration Volume- 20 vols Time in Seconds Volume of O2 (cm3) Experiment 1 Experiment 2 Average 30 95 94 94.5 60 100 100 100 90 100 100 100 120 100 100 100 150 100 100 100 180 100 100 100 Modifications The results from my preliminary experiment show that 100 cm3 of oxygen has been produced in the first 30
Rating:Essay Length: 1,055 Words / 5 PagesSubmitted: January 12, 2010 -
Concentrations of Bile Salts on Lipase Enzyme
AIM The aim of this investigation is to explore the effect of different concentrations of bile salts on the time taken for the lipase enzyme to break down fat. BILE Bile is a brownish bitter alkaline fluid produced by the liver and made by the hepatocytes from water, bile salts, bile pigments cholesterol and phospholipids and stored in the gall bladder. Bile is directly connected with digestion. It is released sporadically into the small intestine
Rating:Essay Length: 845 Words / 4 PagesSubmitted: March 25, 2010 -
Concept Comparison and Analysis Across Theories
Concept Comparison and Analysis across Theories The process of choosing a nursing model or theory to guide one's clinical practice, curriculum development or theoretical framework for research can be facilitated by analysis of and comparison of existing theories. The concept of care is a core concept common to many nursing theories. Caring is considered by many as one central feature within the metaparadigm concept of nursing knowledge and practices (Watson & Smith, 2002, p. 456).
Rating:Essay Length: 2,487 Words / 10 PagesSubmitted: September 11, 2011 -
Concept Comparison and Analysis Across Theories
Concept Comparison and Analysis across Theories The process of choosing a nursing model or theory to guide one's clinical practice, curriculum development or theoretical framework for research can be facilitated by analysis of and comparison of existing theories. The concept of care is a core concept common to many nursing theories. Caring is considered by many as one central feature within the metaparadigm concept of nursing knowledge and practices (Watson & Smith, 2002, p. 456).
Rating:Essay Length: 1,898 Words / 8 PagesSubmitted: October 15, 2012 -
Concept Comparison and Analysis Across Theories Paper
Concept Comparison and Analysis across Theories The process of choosing a nursing model or theory to guide one's clinical practice, curriculum development or theoretical framework for research can be facilitated by analysis of and comparison of existing theories. The concept of care is a core concept common to many nursing theories. Caring is considered by many as one central feature within the metaparadigm concept of nursing knowledge and practices (Watson & Smith, 2002, p. 456).
Rating:Essay Length: 1,966 Words / 8 PagesSubmitted: May 1, 2011 -
Concepto De Educación Física: Evolución Y Desarrollo De Las Distintas Concepciones.
TEMA 1.- CONCEPTO DE EDUCACIÓN FÍSICA: EVOLUCIÓN Y DESARROLLO DE LAS DISTINTAS CONCEPCIONES. INTRODUCCIÓN. I.- CONCEPTO DE EDUCACIÓN FÍSICA. A.- CONCEPTO ACTUAL FRENTE AL CONCEPTO TRADICIONAL. B.- LA EDUCACIÓN FÍSICA COMO CIENCIA. 1.- La educación física como tecnología pedagógica. 2.- Origen de los conocimientos científicos. II.- EVOLUCIÓN Y DESARROLLO DE LAS DISTINTAS CONCEPCIONES. A.- ANTECEDENTES PREVIOS A LA GIMNASIA ANTIGUA. B.- GIMNÁSTICA ANTIGUA. 1.- Grecia. 2.- Roma. C.- EDAD MEDIA. D.- EDAD MODERNA (XV-XVIII) E.-
Rating:Essay Length: 4,488 Words / 18 PagesSubmitted: July 27, 2014 -
Conclusion
Conclusion This lab was intended to model cell size and discover why cells divide. It was proposed that cells divide because of combustion. This is not the case as it is not what was looked at in the experiment. Surface area of an object was compared to its volume and weight in this experiment. It was discovered that as volume increased the surface area to volume ratio decreased as did the surface area to weight
Rating:Essay Length: 278 Words / 2 PagesSubmitted: May 14, 2010 -
Conclusion
Conclusion I reduced 9-florenone through reduction with the metal hydride reagent sodium borohydride (NaBH4). we used the organic solvent methanol to suspend the 9-flouronone and added NaBH4, a weak reducing agent , to reduce the bond by attacking the carbonyl carbon atom base of the ketone group with a hydride ion. Due to the negative charge left on the oxygen (alkoxide) due to the due to reduction, the Boron (BH3) acting as a Lewis acid
Rating:Essay Length: 649 Words / 3 PagesSubmitted: April 25, 2011 -
Concorde
Abstract Concorde was big technological achievement, aircraft made beyond its time, triumph of engineering craft. Success desired by all nations achieved thru European collaboration of Britain and France. However, economical failure not because of its huge development difficulties and costs as because of the staggering high cost of fuel, environmental opposition and inability to obtain permission to fly supersonically over land. Concluding that its withdrawal was a big step backward in an age of progress
Rating:Essay Length: 1,730 Words / 7 PagesSubmitted: February 23, 2010 -
Conformational Analysis
CHEM 222 FALL SEMESTER 2015 CONFORMATIONAL ANALYSIS Students would understand the conformations of alkanes & cycloalkanes by the study of conformational analysis. {WADE: Chapter 3-7→3-15}. There are two teaching videos uploaded onto the SGU Mediasite somewhere up in the “cloud” (address given @ the end of handout.) There are also videos on YouTube, Khan Academy etc. that you can access. Recall that a carbon-carbon single (σ) bond is formed by the overlap of cylindrically symmetrical
Rating:Essay Length: 1,690 Words / 7 PagesSubmitted: February 13, 2016 -
Congenital Heart Disease
Congenital Heart Disease Congenital heart diseases are lesions, caused by abnormal development of the structures of the heart. This happens in the embryonic life due to environmental or unknown factors. The cause of congenital disease is usually unknown, but there are multifactor reasons that are incriminated. They are said to be sporadic. This meaning that it is not secluded to one geographic location. However this incidence is increased in those with a positive family history
Rating:Essay Length: 1,319 Words / 6 PagesSubmitted: May 9, 2010 -
Congenital Insensitivity to Pain with Anhidrosis
Congenital Insensitivity to Pain with Anhidrosis Congenital Insensitivity to Pain is a very amazing disease. I chose to report on the specific section of it dealing with Anhidrosis because this also leaves the infected individual with the inability to sweat. This causes problems such as fevers and overheating from over exertion or external heat which in turn can cause brain damage. Many people affected by this disease die before the age of twenty-five from infections
Rating:Essay Length: 1,242 Words / 5 PagesSubmitted: March 30, 2010 -
Congestive Heart Failure
Betty Louidor Critical Appraisal exercise 1) The study vulnerable of potential benefits of the treatment outweigh the potential risk of the infant at birth. Preventing and diminished deformation make infant vulnerable to skull deformation to limitation in their mobility. 1b) Correcting mild positional head shape deformities in healthy infants with the cranial cup and the new revised standardized cranial cup model support. Randomized single blind study measure the safety and the feasibility and efficacity of
Rating:Essay Length: 332 Words / 2 PagesSubmitted: July 15, 2017 -
Conjoined Twins
Out of approximately every 400,000 births, four are conjoined. Of the four, three will die within twenty-four hours. Of the remaining set of twins, 70% of them will either die (one or both) or they will live out their lives handicapped. The overall survival rate for conjoined twins is between 5% and 25%. Considerably more males conjoin in the womb than females; however females are three times as likely as males to be born alive.
Rating:Essay Length: 802 Words / 4 PagesSubmitted: April 18, 2010 -
Consciousness in a Cockroach
Consciousness in a Cockroach This article was written by Douglas Fox and was taken from the December 2006 issue of the Discover Magazine. This article is about a how a neurobiologist at the University of Arizona at Tucson, by the name of Nicholas Strausfeld, has probed the brains structures of cockroaches, water bugs, worms, and shrimp using microscopes, tweezers, and other hand built electronics. Strausfeld and his graduate students conclude that the insects possess “the
Rating:Essay Length: 648 Words / 3 PagesSubmitted: December 10, 2009 -
Conservation
I believe that conservation means that humans would have regulate the use of the nature. Preservation on the other hand means to keep the way nature has left it and not in the hands of humans. I do not feel that humans can harvest forest resources in an environmental way. By harvesting forest resources humans will be disturbing their natural state. An example of this would be if they wanted to drill for oil that
Rating:Essay Length: 288 Words / 2 PagesSubmitted: March 17, 2010 -
Conservation and Perservation
Conservation and Preservation Conservation is the environmentally safe way to obtain the resources. Preservation is to leave the land in its natural state. Ii believe that both sides of this issue have a valid point. We need to become less dependant on foreign resources but, we also need to be more aware of our environment. I believe that the environment should be preserving and not allowed to be disturbed. We need to find an alternative
Rating:Essay Length: 412 Words / 2 PagesSubmitted: December 20, 2009