Science
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4,610 Essays on Science. Documents 2,941 - 2,970
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Osteoporosis
Special Assignment NutritionDefine Type 1 and Type 2 osteoporosis, and explain habits that increase a person’s risk of developing osteoporosis.Type 1 osteoporosis is characterized as post menopausal. Women who are approaching the age of menopause should seriously consider consulting a physician to prepare for the changes her body is about to go through. As estrogen levels taper off, the kidneys start to draw calcium the body needs for normal maintenance of the skeletal frame
Rating:Essay Length: 441 Words / 2 PagesSubmitted: February 14, 2010 -
Osteoporosis
Osteoporosis Osteoporosis is a bone disease that causes the bones to become so thin that they can break during normal daily activities such as lifting a heavy object or rolling over in bed. Whether someone will develop osteoporosis or loss of bone, known as osteopenia, depends on the thickness of the bones early in life, as well as health, diet, and physical activity later in life. The exact cause of osteoporosis is not known.
Rating:Essay Length: 1,424 Words / 6 PagesSubmitted: February 19, 2010 -
Osteoporosis
Bone Case Study 1. A bone mineral density (BMD) test measures the amount of mineral concentration in a specific region of the bones in order to determine a persons bone strength or density and their risk for fractures. 2. The physician uses the BMD test in conjunction with a patient’s history to determine the patient’s risk of Osteoporosis. Osteoporosis is a disease that is characterized by thinning, weak bones. Bone loss is actually a normal
Rating:Essay Length: 575 Words / 3 PagesSubmitted: March 24, 2010 -
Other Life Forms
Other Life Forms (J.Hussey) The Sphinx and the pyramids could represent a good example of more advanced cultures visiting us for so long, however, there is a lot of speculation surrounding the possibility of life in outer space. It is stupid to think that in this immense universe the unique planet with life is Earth, but on the other hand all the concepts we handle about the Universe have been only proven to us, under
Rating:Essay Length: 293 Words / 2 PagesSubmitted: April 10, 2010 -
Our Little Thesis
Chapter 1 I. Introduction Adhesive is a substance that holds two materials together by natural adhesion. Glue is a form of adhesive and an impure form of gelatin. It is also the oldest adhesives known to man, it also makes very strong joint but it is not water proof. Glue was by far the most important adhesive until the latter part of 19th century. Thee glue is made from animal bones (Encarta 97 Encyclopedia,
Rating:Essay Length: 1,978 Words / 8 PagesSubmitted: December 29, 2009 -
Our Neighborhood Drawbacks
My family and I live in a private zone in Visalia which has neat streets and attractive sidewalks decorating our neighborhood. In addition, we count with a secure playground area for our kids funny. It is surrounded by a high fence and has a soft carpet under the playground to protect our kids against fall downs. Many of our residents declare that is a pleasure to take a walk around our area. Laura, a woman
Rating:Essay Length: 948 Words / 4 PagesSubmitted: December 29, 2009 -
Our Plastic Prisons (13 Pages)
Parker 1 Our Plastic Prisons In the creation of our beings, we are blessed, and sometimes cursed with features we, as freethinkers, might not otherwise have chosen for ourselves. Certain circumstances however, may arise on the journey known as life, forcing us to reconstruct these features; in an effort to construct normal, healthy, lives. Often, we are compelled to reconstruct these features in an effort to enhance an otherwise normal, healthy life. For the individual
Rating:Essay Length: 3,704 Words / 15 PagesSubmitted: January 28, 2010 -
Our Radiant Planet: Depletion of the Ozone Layer
Our Radiant Planet: Depletion of the Ozone Layer Ozone is a relatively unstable form of molecular oxygen containing three oxygen atoms produced when upper-atmosphere oxygen molecules are split by ultra violet light. Stratospheric ozone is found in a broad band, extending generally from 15 to 35km above the earth. Although the ozone layer is surprisingly thin, it acts as a protective shield to the earth, as it filters out most of the harmful solar ultraviolet
Rating:Essay Length: 973 Words / 4 PagesSubmitted: February 22, 2010 -
Our Radiant Planet: Depletion of the Ozone Layer
Our Radiant Planet: Depletion of the Ozone Layer Ozone is a relatively unstable form of molecular oxygen containing three oxygen atoms produced when upper-atmosphere oxygen molecules are split by ultra violet light. Stratospheric ozone is found in a broad band, extending generally from 15 to 35km above the earth. Although the ozone layer is surprisingly thin, it acts as a protective shield to the earth, as it filters out most of the harmful solar ultraviolet
Rating:Essay Length: 308 Words / 2 PagesSubmitted: May 19, 2010 -
Our Skeletal Bones - Caring for Your Bones
We all have bones. Our skeletal bones give us the shape of our boy and posture. If we did not have bones then we would moving like jelly fishes. Our spine and leg bones allow us to stand erect. Our bones serve as shields and helmets of our soft body parts. The skull protects the brain, the spine supports the spinal column and the ribs cover our heart and lungs. Our bones also work with
Rating:Essay Length: 256 Words / 2 PagesSubmitted: August 14, 2018 -
Our Universe
Our Universe Our universe was created billions of years ago and no one is exactly sure of how. What will come of it in the future? Religions, beliefs, and scientists all have different perspectives of what will happen in the future to our earth and universe and they all have different views of how it all started. Once we know definitely how the earth was created, then we will find out most of the mysteries
Rating:Essay Length: 1,250 Words / 5 PagesSubmitted: February 3, 2010 -
Our Universe as a Laboratory for Understanding Physical Laws
Cosmology is the study of the origin, current state, and future of our Universe. With recent technological advances, we have been able to probe deeper and deeper into the large scale structure of the vast universe and the small scale structure of matter. Our basis of understanding and determining fundamental physical laws in assumed to be correct when measured locally in laboratory experiments. These laws are verified over and over again so that they can
Rating:Essay Length: 2,161 Words / 9 PagesSubmitted: December 3, 2009 -
Overfishing
The water resource problem in the video is overfishing. Overfishing is a problem that occurs when fishermen catch fish at a rate faster than they can reproduce. I think overfishing originated when fishermen began using bigger and better fishing nets and techniques. Better fishing equipment resulted in overfishing, which is a major water resource problem. Depletion of the fish population is a problem that could be managed. Even though, it is difficult for the depleted
Rating:Essay Length: 842 Words / 4 PagesSubmitted: April 29, 2010 -
Overfishing Research Paper
Muizenberg Beach, located about 25 kilometers south of Cape Town, South Africa, is an expansive, white beach with bright blue water and mountains in the background. The shore is gently sloping, with flat, hard sand and moderate waves. Muizenberg Beach is one of the most breathtaking places in all of South Africa. However, here, paradise is not always guaranteed and can disappear in a moment. Recently, a young lifeguard was violently attacked a great white
Rating:Essay Length: 2,267 Words / 10 PagesSubmitted: December 21, 2009 -
Overfishing, Shifting Baselines, and Marine Protected Areas
Historical overfishing is the predecessor and the cause of pollution, eutrophication, hypoxia, physical destruction, climate changes, and the collapse of entire oceanic ecosystems. Along with the dramatic increase in human populations, the perpetual migration toward coastlines, and the advancement of technology, the rate at which fish are caught has exceeded that in which they are produced, resulting in the depletion or collapse of many fisheries. Retrospectively analyzing paleoecological, archaeological, and historical data, Professor Jeremy Jackson,
Rating:Essay Length: 611 Words / 3 PagesSubmitted: March 2, 2010 -
Overgrazing - Public Grassland
500,000 acres of public grassland have been severely degraded due to overgrazing of the acres over the past several decades. Overgrazing has made the soil erode leaving large gullies. Invasive weeds have invaded the area by replacing native grasses and the shrubs have been encroaching on the grassland area because of the fire that had been suppressed. In order to restore the 500,000 acres we must begin by assessing the land’s condition. Once we have
Rating:Essay Length: 626 Words / 3 PagesSubmitted: October 6, 2016 -
Overpopulation
Overpopulation The Book of Genesis tells the story of creation of man. God said to man, "be fruitful and increase in numbers; fill the earth and subdue it." Prior to the nineteenth century, it was believed that God would provide for those who came into the world (Day 101). But, in 1798, this view was shaken by Thomas Malthus' An Essay on the Principle of Population, in which he concluded that while population increases geometrically,
Rating:Essay Length: 1,348 Words / 6 PagesSubmitted: December 1, 2009 -
Overpopulation Is Not the Problem
Overpopulation is Not the Problem As we sailed into the new millennium, humans crossed a threshold never before witnessed in our species. We flew past the 6 billion mark in number. This is an impressive figure, but not one that we can easily appreciate, unless we are Bill Gates or ExxonMobil. Let's try to understand how incredibly large this number is. Consider that this article has ~9000 letters. Thus, it would take more than 650,000
Rating:Essay Length: 1,829 Words / 8 PagesSubmitted: December 20, 2009 -
Overview of Acupuncture
ACUPUNCTURE Sheila Hnida History Acupuncture is thought to have originated in China. It is mentioned in documents dating from the Common Era.[1] The earliest written account is found in the Nei Ging (The Yellow Emperor’s Classic of Internal Medicine). The document is believed to be from around 200 B.C., and is one of the oldest medical text books.[2] Acupuncture has been a major part of primary healthcare in China for the last 5,000 years
Rating:Essay Length: 533 Words / 3 PagesSubmitted: March 12, 2010 -
Overview of Great White Sharks
Marsida Barjamaj BIO 132 Prof: Mark Frageau Overview of Great White Sharks The planet Earth needs to change the name. I don’t understand why we have to call the planet Earth instead of planet Water or Ocean where 70% of this planet it is covered from water. I have always been interested to know more about the ocean and the species which intrigues me. There are people who won’t even step foot in the ocean
Rating:Essay Length: 1,820 Words / 8 PagesSubmitted: April 30, 2017 -
Overview of Kindney
Kidneys consist of excretory tubules called nephrons. Kidneys play a vital role of processing waste products of metabolism. Blood is continuously being cycled through the kidneys in order to remove nitrogenous wastes. The removal of these wastes plays an integral role in maintaining homeostasis. The urinary system consists of kidneys, blood vessels and the various passageways that dump the wastes out of the body. The "dirty blood" that needs to be "cleaned" goes into the
Rating:Essay Length: 259 Words / 2 PagesSubmitted: December 31, 2009 -
Overview of Stem Cell Research
Background and Significant Medical research has brought the world many great improvements: cures for numerous types of illnesses, pain medication, and an infinite number of things that have changed the way people look at the scientific side of medical research. Along with remarkable breakthroughs of medical research come the cons that have derived from the practice. This includes the various usages of animals to further our scientific understanding. Medical research has the potential to be
Rating:Essay Length: 1,539 Words / 7 PagesSubmitted: November 11, 2009 -
Owls
Cronin, Todd Vinklarek 4/11/05 The Great Horned Owl 1. The Great Horned Owl 2. Bubo virginianus 3. Wingspan: 30 - 60": Length: 18 - 25": Weight: 3 pounds 4. Yellow eyes and dark bill; Upper parts mottled brown, gray, and black; Pale under parts with fine brown bars; Reddish-brown facial disks bordered by black with a lower border of white; White throat patch 5. Great Horned Owls have adapted to many different places and climates.
Rating:Essay Length: 257 Words / 2 PagesSubmitted: January 30, 2010 -
Oxidation with Sodium Hypochlorite
final weight percent yield 2,4-DNP Tollen's test pathway .42g 67% positive negative oxidation of secondary OH Good Things My experiment went well. I began my experiment with .64g of 2-ethyl-1,3-hexanediol. The molecular weight of this compound is 146.2g/mol. It is converted into 2-ethyl-1-hydroxyhexan-3-one. This compounds molecular weight is 144.2g/mol. This gives a theoretical yield of .63 grams. My actual yield was .42 grams. Therefore, my percent yield was 67%. This was one of my
Rating:Essay Length: 1,039 Words / 5 PagesSubmitted: November 8, 2009 -
Oxides Research
Oxides Research 1. Assess evidence, which indicates increases in atmospheric concentration of oxides of sulfur and nitrogen. Thorough collection of data, surveys, and tests from the 1950’s indicate a rising trend in atmospheric concentrations of oxides of sulfur and nitrogen. An enhancement in funding, technological and information resources, has led to wider and more detailed analyses of oxides of sulfur and nitrogen concentrations, and as the diagrams indicate (see diagrams) there is a clear rise
Rating:Essay Length: 2,792 Words / 12 PagesSubmitted: February 9, 2010 -
Oxycotin
OxyContin, street named Oxycotton, is used by people looking for a fast and powerful high. Usually found in form of a pill, it is used to help cancer patients deal with pain. Now most commonly used for a high, crushed and snored up the nose, users become very dependent on it. The active ingredient in the drug, a morphine derivative is what gives the power drive. This narcotic has a growing bad reputation for people
Rating:Essay Length: 293 Words / 2 PagesSubmitted: December 15, 2009 -
Oxygen
Oxygen There are 117 known elements in the periodic table. Out of all of these, the single most important (in my opinion), is oxygen. Why? The answer is simple. Without oxygen, human beings would not be able to live. Oxygen is the main component in the air we breathe, making it essential to the respiration of all animals. It is also found in the compound, H2O (water), which is essential to the life of most
Rating:Essay Length: 779 Words / 4 PagesSubmitted: December 7, 2009 -
Oxygen Deprived Brains Repaired and Saved
Oxygen Deprived Brains Repaired and Saved. Melbourne’s Howard Florey Institute Scientists have found special proteins that help protect the brain after it has been damaged by lack of oxygen, which take place in situations such as stroke, near-drowning and traumatic brain injury. Dr. Nicole Jones and her team of scientists discovered that during oxygen deficiency, or ‘hypoxia’, the proteins (HIF1б and PHD2) increase. These proteins control processes like the production of red blood cells, new
Rating:Essay Length: 293 Words / 2 PagesSubmitted: December 30, 2009 -
Ozone
Ozone derives from the greek word ozein which means to smell. It was first discovered in 1839 by Christian Friedrick Schonbein who noticed it because of its distinctive acrid smell. He discovered this at the University of Basel in Switzerland. Ozone is merely oxygen, but not the type we breath. Ozone, O3 has three compounds while oxygen has only two. Ozone is reac- tive, meaning it does not stay still, and wants to go back
Rating:Essay Length: 1,212 Words / 5 PagesSubmitted: December 12, 2008 -
Ozone Depletion
Ozone Depletion A Case for “Ignoring the Facts” Ozone forms a layer of the earth’s atmosphere that protects us from the sun’s deadly ultraviolet rays. During the last decade there has been a scare set forth by environmental enthusiasts that Chlorofluorocarbons (CFCs) destroy the ozone layer. Although there has been no evidence of any CFC destruction of the ozone layer there is an international stoppage on using CFCs, as well as an executive order set
Rating:Essay Length: 1,222 Words / 5 PagesSubmitted: December 13, 2009