Science
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4,610 Essays on Science. Documents 2,881 - 2,910
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Open Fracture of the Radius
Injury report: Open fracture of the Radius. A triathlon involves swimming, running and then biking a set track. A triathlete fell from his bike during training, due to the wet road. He landed awkwardly on his bike. His Radius was broken because he landed with his arm on the handle bars of the bike. The force at which he landed on the handle bars caused his Radius to break and pierce the skin. A cracked
Rating:Essay Length: 845 Words / 4 PagesSubmitted: November 16, 2009 -
Open Versus Endoscopic Lumbar Pedicle Screw Fixation
Introduction: With improved spinal instrumentation and surgical technique, the non-union rate for spinal fusion has dramatically declined in recent years. However, pseudoarthrosis remains common in certain patient populations such as the elderly, those who smoke and drink, those with metastatic and metabolic disorders, and those who do not comply with post-operative recommendations. In these populations and others, the non-union rate can be as high as 35% (1). In addition to non-union, complications associated with the
Rating:Essay Length: 306 Words / 2 PagesSubmitted: January 25, 2010 -
Operating System
2.1 About Operating System Operating system is the first software that we see when we turn on the computer, and the last time we see when we turn off the computer. Many users don’t know what it is that the operating system does precisely. It has requirement for software to be called an operating system. We will discuss how operating system works to turn a collection of hardware to be a powerful tool. 2.2 How
Rating:Essay Length: 664 Words / 3 PagesSubmitted: November 20, 2009 -
Operation Deep Shield
It was 1998 when I first became aware that the clouds above my home in the San Juan Islands were changing. The formations that I had enjoyed since childhood, often subjects of the looks-like game, were mostly gone. Gone were the giant cotton turtles, faces, mountains and camels. The clouds of my dreams had been replaced by long, thick, ugly white streaks that bore no resemblance to those of my youth. These new clouds
Rating:Essay Length: 1,772 Words / 8 PagesSubmitted: May 11, 2010 -
Operational Amplifiers Lab
Operational Amplifiers Lab Abstract: This lab will demonstrate the different forms of the operational amplifier. By connecting circuits from previous labs to an operational amplifier, we will be able to see the different operations that a Op-amp can perform. The various formulas will be tested for the accurateness in predicting the output of an op amp. Data: Equipment Used: ELVIS workbench DMM protoboard various resistors wire Circuit 1 Calculation: V1 = 15V/20k-ohms * 2k-ohms =
Rating:Essay Length: 547 Words / 3 PagesSubmitted: December 12, 2009 -
Operon Hypothesis
Describe the operon hypothesis and how it explains the control of the messenger RNA production and the regulation of protein synthesis in bacterial cells. The operon is a group of genes coding for proteins with related functions and they are arranged in units. The operon is made up of the promoter, structural genes and the operator. Transcription depends on the regulator, it may be located anywhere on the bacterial chromosome. The regulator codes for the
Rating:Essay Length: 257 Words / 2 PagesSubmitted: April 29, 2010 -
Optic Nerve Hypoplasia in the Fetal Alcohol Syndrome
In the United States of America, one out of every seven hundred and fifty children is born with fetal alcohol syndrome (FAS). Mothers who consume alcohol anytime during pregnancy, puts their children at risk for multiple constellations of abnormalities when they are born. A common condition observed in children affected is optic nerve hypoplasia, which basically is the underdevelopment of the optic nerve during pregnancy. The affected child has abnormal shaped eyes that appear closer
Rating:Essay Length: 1,503 Words / 7 PagesSubmitted: December 18, 2009 -
Optometry
Over half the people in the United States wear glasses or contact lenses. Optometrist, also known as “Eye Doctors” or “O.D.’s, have to provide there services in order to meet the demands. Optometrists have to be well-educated and friendly people. All States and the District of Columbia require that optometrists be licensed, which requires a Doctor of Optometry degree from an accredited optometry school and passing both a written and a clinical State board examination.
Rating:Essay Length: 886 Words / 4 PagesSubmitted: December 2, 2009 -
Oragnic Food
Many Americans around the United States have already begun to purchase organic food products. According to the Organic Trade Association (2002), thirty nine percent of the U.S. Population uses organic products. Out of this thirty nine percent, they can be separated into three different classes: Integrated, Middle, and Fringe. The organic Integrated Group consumes organic products more than once a day, The organic Middle group consumes organic products at least weekly, and the organic Fringe
Rating:Essay Length: 985 Words / 4 PagesSubmitted: March 6, 2010 -
Oral Glucose Tolerance Test
Experimental Purpose The purpose of the Variables in Glucose Tolerance lab was to examine the changes in blood sugar during glucose tolerance test conducted with test rats. We will be using three rats and perform the Oral Glucose Tolerance Test to measure the glucose levels in the rats blood. The oral glucose tolerance test is a laboratory method to check how the body breaks down (metabolizes) blood sugar. Glucose is the sugar that the body
Rating:Essay Length: 1,107 Words / 5 PagesSubmitted: May 10, 2010 -
Oral Hygiene for People with Dementia
Assignment 1 Evidence based practice “Oral Hygiene for adults with Dementia” -Introduction- The purpose of this essay is to discuss a clinical skill or nursing action by referring to the nursing and allied health literature to explain and support evidence based practice. The skill I wish to examine is the practice of oral hygiene for adults with dementia in residential aged care facilities. In this essay I aim to provide the reader with adequate
Rating:Essay Length: 2,188 Words / 9 PagesSubmitted: January 6, 2010 -
Oral Pathology
4- Black Hairy Tongue -Characterized by the elongation and hyperkeratosis of the filiform papillae, resulting in this hairlike appearance. The elongated papillae usually exhibit brown, yellow, or black pigmentation. Most patients are asymptomatic, but occasionally patients complain of irritation, gagging, or an altered taste. Patients are usually heavy smokers with poor oral hygiene and some have vitamin deficiencies, GI problems, or radiation therapy. Cures range from just brushing the tongue to corticosteroid therapy. 5-
Rating:Essay Length: 2,625 Words / 11 PagesSubmitted: May 19, 2010 -
Org Chem
Microbial spoilage of food causes losses of up to 40% of all food grown for human consumption worldwide. Yeast growth is a major factor in the spoilage of foods and beverages that are characterized by a high sugar content, low pH, and low water activity, and it is a significant economic problem. While growth of spoilage yeasts such as Zygosaccharomyces bailii and Saccharomyces cerevisiae can usually be retarded by weak organic acid preservatives, the inhibition
Rating:Essay Length: 262 Words / 2 PagesSubmitted: March 9, 2010 -
Organ Donation
How do you feel when you have to wait for something you really, really want?.............What if it was something you couldn’t live without?..........My cousin was five years old when he found out he needed a new kidney. He went on the organ waiting list right away. He was called twice during a six month span that they had a kidney wasn’t a good match. He had to wait again. The third time was a charm.
Rating:Essay Length: 1,913 Words / 8 PagesSubmitted: December 30, 2009 -
Organ Donation
How do you feel when you have to wait for something you really, really want?.............What if it was something you couldn’t live without?..........My cousin was five years old when he found out he needed a new kidney. He went on the organ waiting list right away. He was called twice during a six month span that they had a kidney wasn’t a good match. He had to wait again. The third time was a charm.
Rating:Essay Length: 1,913 Words / 8 PagesSubmitted: January 24, 2010 -
Organic Chemistry
Homologous Series: An homologous series is a set of compounds whose components differ by a single repeating functional group. In the case of (straight chain) alkanes, CH2. Their general formula is CnH2n+2. The chemical properties of the individual members of an homologous series are similar and they show a gradual change in physical properties. Hydrocarbons: Compounds containing only hydrogen and carbon. There are three types alkanes, alkenes and alkynes. A saturated molecule contains single covalent
Rating:Essay Length: 262 Words / 2 PagesSubmitted: November 13, 2009 -
Organic Compounds Lab Report
Identifying Organic Compounds Joe Harris 11/12/07 1. Background Organic compounds are, by definition, any chemical compound containing carbon. These compounds include carbohydrates, polysaccharides, lipids, proteins, and nucleic acids. Each one of these compounds has a different purpose. Carbohydrates give energy to cells when consumed. Lipids are basically the fats of a cell. Proteins are the building blocks of muscle in a cell. Nucleic acids are used to transfer genetic information from one cell to the
Rating:Essay Length: 738 Words / 3 PagesSubmitted: May 21, 2010 -
Organic Farming
Organic Farming Soil is the most important thing when it comes to growing crops. Good soil is full of nutrients and living things that are important to the growth of any plant life. There needs to be plenty of insects and bacteria and other microscopic organisms in the soil. With organic farming they can’t pump the soil full of nutrients with chemicals and industrial fertilizers like other farmers can. They have their own compost they
Rating:Essay Length: 386 Words / 2 PagesSubmitted: January 9, 2010 -
Organic Molecules
Organic molecules are compounds formed by more than one element found in, and produced by, Living organisms. Organic molecules can also be defined as molecules with carbon in them associated with organisms. Organic molecules that are found in Living organisms are sub-divided into four different types. Each class of molecule has features that determine its uses in living organisms. The four types of Organic molecules are Carbohydrates, Proteins, Lipids and Nucleic acids. Carbohydrates are sugars,
Rating:Essay Length: 664 Words / 3 PagesSubmitted: June 27, 2017 -
Organic Solvent Stress on Membrane
Beet Cell Lab Purpose: The purpose of this Lab was to see how much pressure or stress the beet tissue would hold. Hypothesis: I hypothesize that the higher % of the solvent that the higher the colour intensity will be shown on the ph colour scale. The lower the solvent then the less colour shown. Materials: *Test Tubes (4) *Cork Borer *Beets *Water *1% Acetone *50% Acetone *1% Methanol *50% Methanol Procedure: *Cut 4
Rating:Essay Length: 428 Words / 2 PagesSubmitted: December 19, 2009 -
Organic Vs. Inorganic Foods
Introduction Our world today is infested and becoming way more dangerous with all these chemicals. In an effort to increase productivity and confine bigger market shares, the use of fertilizers, pesticides, food additives such as dyes and additives has become so common that artificial ingredients are now outnumbering natural ingredients on many food content labels, and it is the opinion of many experts that this forever increasing use of artificial fertilizers, pesticides, and chemical additives
Rating:Essay Length: 1,757 Words / 8 PagesSubmitted: June 6, 2010 -
Organisms Depend upon Photosynthesis
Organisms Depend Upon Photosynthesis A. Organisms Depend Upon Photosynthesis 1. Photosynthetic organisms (algae, plants and a few other organisms) serve as ultimate source of food for most life. 2. Photosynthesis transforms solar energy into chemical bond energy of carbohydrates. 3. Most food chains start with photosynthesizers. Solar Radiation Key Discoveries of Photosynthetic Process Structure of Chloroplasts Function of Chloroplasts A. Solar Radiation 1. Solar radiation is described in terms of its energy content and its
Rating:Essay Length: 1,795 Words / 8 PagesSubmitted: November 15, 2009 -
Organizational Behavior Trends
Organizational Behavior Trends Introduction Ethics, defined as the study of right and wrong, is an important domain that must be studied by future leaders/managers of organizations practicing their profession in the business industry. The study of ethics is important for managers, since professional responsibility should be given to managers. As a professional, the manager is engaged in activities that are always coupled with public interest. And because of this public interest, the manager should ensure
Rating:Essay Length: 594 Words / 3 PagesSubmitted: February 21, 2010 -
Origin of Life
Over the past few centuries scientists have been trying to answer the question: what was the origin of life? There have been a number of scientists who have produces a number of plausible theories. The currently most excepted theory is Oparin’s theory, which states that the “origin of life on Earth was in nonliving chemical substances which spontaneously formed in Earth’s early atmosphere and combined to make more complex chemicals until living cells were formed.
Rating:Essay Length: 1,337 Words / 6 PagesSubmitted: December 15, 2009 -
Origin of Life
Have you ever wondered how the universe we live in today was made. One of the theory’s about how the universe was made is The Big Bang Theory. According to it, the universe was created between 10 billion and 20 billion years ago. It was a comic explosion that hurled matter in all directions across space. It is the dominate scientific theory about how the universe was created. In the year of 1927, a
Rating:Essay Length: 524 Words / 3 PagesSubmitted: January 13, 2010 -
Origin of the Moon
The origin of the moon is not absolutely known like most astronomical issues. Throughout the recorded history of mankind many theories have evolved trying to explain this phenomenon but even today there is not an absolute accepted answer. There are even conspiracy theorists who question the idea that we landed on the moon, citing that it could have been fabricated. By and large though, most believe that man did land on the moon in 1969,
Rating:Essay Length: 427 Words / 2 PagesSubmitted: January 30, 2010 -
Origin of the Universe
Big Bang Theory, currently accepted explanation of the beginning of the universe. The big bang theory proposes that the universe was once extremely compact, dense, and hot. Some original event, a cosmic explosion called the big bang, occurred about 10 billion to 20 billion years ago, and the universe has since been expanding and cooling. The theory is based on the mathematical equations, known as the field equations, of the general theory of relativity set
Rating:Essay Length: 259 Words / 2 PagesSubmitted: November 8, 2009 -
Origin of the Universe
The Origin of the universe… The Origin of the Universe by Bilal Qureshi Since the dawn of intelligent man, humanity has speculated about the origins of the universe. There is evidence, which indicates that the universe started around 15 billion years ago. This is probably the greatest discovery imaginable; however, the universe still seems to be a very controversial subject. Most scientists agree that there was a beginning but there is a lot of
Rating:Essay Length: 4,532 Words / 19 PagesSubmitted: December 12, 2009 -
Orion
Today, at the Kennedy Space Center in Florida, a huge team of engineers and technicians is working diligently around the clock to creating what is going to be a very long anticipated project. This team of scientists and technologists is working on completing the final stages of the Orion crew capsule, a capsule designed to take astronauts farther than any other manned space flight. The goal of the Orion capsule is to take astronauts beyond
Rating:Essay Length: 817 Words / 4 PagesSubmitted: March 17, 2015 -
Osmosis
Osmosis Osmosis is just a special case of diffusion - where water diffuses through a membrane which has different concentrations on either side. Permeable means "allows anything to pass through". Membranes in cells allow small molecules (water) to pass through, but prevent bigger ones from passing. This is called "selectively permeable". Take a look at the following animation; If a selectively permeable membrane separates the two solutions, water moves through it in both directions at
Rating:Essay Length: 330 Words / 2 PagesSubmitted: November 9, 2009