Science
The scientific world contains a wealth of knowledge that enables mankind to live the way it does. EssaysForStudent.com can help you close the gaps in your knowledge.
4,609 Essays on Science. Documents 1,981 - 2,010
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Harmonic Motion: The Spring
Harmonic Motion: The Spring Objective: The purpose of this experiment to study the simple harmonic motion of an object placed on the spring. Harmonic motion involves the principle of oscillation where the spring force is proportional to the spring?s elongation. This means that the further the spring was stretched, there was increase in the force in order to keep the spring extended. The experiment is divided into two parts. In the first part, I
Rating:Essay Length: 629 Words / 3 PagesSubmitted: December 20, 2009 -
Has Nuclear Fusion Been Observed in a Bubble Tank?
Has Nuclear Fusion Been Observed in a Bubble Tank? A team of scientists has claimed evidence for deuterium-deuterium fusion in a tabletop apparatus at Oak Ridge National Lab (Taleyarkhan et al., Science, 8 March 2002), but other scientists (including a separate group at Oak Ridge) are raising serious concerns about the validity of the result. In their experiment, Taleyarkhan et al. (a collaboration of scientists from Oak Ridge, Rensselaer Polytechnic Institute and the Russian Academy
Rating:Essay Length: 994 Words / 4 PagesSubmitted: March 30, 2010 -
Hashimoto’s Thyroiditis: Circulatory Disease
Hashimoto's Thyroiditis: Circulatory Disease Thyroiditis is the inflammation of the thyroid gland. It has many causes, Hashimoto's thyroiditis being the most common of them. There are also Subacute Thyroiditis and “Silent” thyroiditis, which occur less frequently than Hashimoto’s. Abnormal blood antibodies and white blood cells attacking and damaging thyroid cells cause this Auto Immune disorder. This is normally considered a chronic inflammatory disorder of the thyroid gland. In the end the sufferer ends up with
Rating:Essay Length: 366 Words / 2 PagesSubmitted: December 21, 2009 -
Hawking Radiation
Theoretically speaking, a black hole is a region of space-time from which nothing can escape; including light (according to many respectable astronomers), but in the case of world renowned author and English physicist, Stephen Hawking, it can be possible for a black hole to emit light. This occurs when the particle and anti-particle separate. One of them gets pulled into the black hole, while the other opposite particle shoots out into space causing it to
Rating:Essay Length: 608 Words / 3 PagesSubmitted: January 23, 2010 -
Hawking Radiation
When people think about their life, to them it seems like an eternity when actually the life span of a human being is seventy-five years. When a person hears of a stars life span is millions of years they can not imagine something living that long. When all they need to do is think of a star as a person, going through the same life cycle, they are born, they live and they die.
Rating:Essay Length: 3,282 Words / 14 PagesSubmitted: March 14, 2010 -
Hayfever
Hayfever What is Hayfever? Hayfever is an allergy (a sensitive reaction to basically harmless substances) to pollen from trees, grass or weeds. It is sometimes called allergic rhinitis (inflammation of the lining of the nasal passages). How do you get Hayfever? Allergies are extreme reactions to basically harmless substances. You get hayfever if you are one of a number of people whose body reacts to pollen in a different way to most (you are described
Rating:Essay Length: 444 Words / 2 PagesSubmitted: April 13, 2010 -
Hayfever
Hayfever What is Hayfever? Hayfever is an allergy (a sensitive reaction to basically harmless substances) to pollen from trees, grass or weeds. It is sometimes called allergic rhinitis (inflammation of the lining of the nasal passages). How do you get Hayfever? Allergies are extreme reactions to basically harmless substances. You get hayfever if you are one of a number of people whose body reacts to pollen in a different way to most (you are described
Rating:Essay Length: 444 Words / 2 PagesSubmitted: April 20, 2010 -
Hazard Identification
Hazard identification Malathion is an insecticide that is used primarily on crops to control insects. Malathion brakes down quickly when exposed to the elements like soil, water, and sunlight. Normally people are not exposed to this insecticide unless they are in the vicinity of the area that is being sprayed. Then the risk will be the spray that is in the air, or on surfaces that have been touched. (http://www.atsdr.cdc.gov) Malathion affects how the brain
Rating:Essay Length: 785 Words / 4 PagesSubmitted: May 5, 2010 -
Hazards of offshore Oil Spill and Subsequent Cleanup and Recovery Technologies
1. Introduction An oil spill is accidental petroleum released into the environment. On land, oil spills are usually localized and thus their impact can be eliminated relatively easily. In contrast, offshore oil spills may result in oil pollution over large areas and present serious environmental hazards. The primary source of accidental oil input into seas is associated with oil transportation by tankers and pipelines (about 70%), whereas the contribution of offshore drilling and production activities
Rating:Essay Length: 392 Words / 2 PagesSubmitted: April 20, 2011 -
Hcs - Physics Space Summary
HSC PHYSICS: MOTORS AND GENERATORS 1. "Motors use the effect of forces on current-carrying conductors in magnetic fields." Students learn to "discuss the effect on the magnitude of the force on a current-carrying conductor with several variations of factors." Mass is the amount of matter in a body whereas weight is the force due to gravity acting on a mass. Mass will not change where the acceleration due to gravity is different but
Rating:Essay Length: 462 Words / 2 PagesSubmitted: February 28, 2013 -
Health
Health 101 Right now, cancer is one of the most feared diseases in the world. In the early 1990s almost 6 million new cancer cases developed and more than 4 million deaths from cancers occurred. Also more than one-fifth of all deaths were caused by cancer and it has been predicted, by the American Cancer Society, that about 33% of Americans will eventually develop this disease. This is a huge disease that is killing people
Rating:Essay Length: 754 Words / 4 PagesSubmitted: November 25, 2009 -
Health
According to the syllabus, this course is to addresses how an effective oral presentation is developed and delivered and to help students acquire strategies for overcoming speaker's anxiety and gaining confidence. Personally, I was very impressed on the first night of class, as the instructor had a different spin on conducting the class. I found it quite unusual but interesting to start the class off drawing a pictures and putting your dream, goals and visions
Rating:Essay Length: 353 Words / 2 PagesSubmitted: January 2, 2010 -
Health and Safety
Health and Safety. Introduction The quality of health and safety of the environment is greatly affected by the environment itself, never more so than in the health care setting, where patients and clients may be more vulnerable than in there own homes. Florence Nightangale suggested that patients in health care settings may be harmed just by being there. Health and Safety commission (1992) places a general duty on employers to ensure the health and safety
Rating:Essay Length: 542 Words / 3 PagesSubmitted: March 15, 2010 -
Health Care
The historic payment system for reimbursing hospitals both by insurers and by Medicare has been Retrospective Cost Based Reimbursement(RCBR). This system of reimbursement encourages hospitals to over charge in order to cover the costs of the uninsured who utilize the hospital. Charges have continued to rise year after year eventually putting the employers at a point where they could no longer afford the payments. For physician reimbursements, both insurers and Medicare employed the Usual and
Rating:Essay Length: 253 Words / 2 PagesSubmitted: November 29, 2009 -
Health Care Delivery Model
Health Care Delivery Model: Childhood Asthma Sara October 22, 2005 University of Portland School of Nursing Abstract Childhood asthma affected an estimated 5 million children under the age of 15 during the year of 1995. The diagnosis of this disease is on a continual rise in the United States, and it is the responsibility of all health care providers to busy themselves in providing the proper patient education, treatment, and preventative measures available to
Rating:Essay Length: 1,712 Words / 7 PagesSubmitted: February 18, 2010 -
Health Care Services in Other Countries
HEALTH CARE SERVICES IN OTHER COUNTRIES Abstract The challenges facing the Social Security program and the economy as a whole will grow over the coming decades as the Baby Boom generation enters retirement and as improvements in human longevity contribute to an overwhelming concern as regards health care costs and availability. The purpose of this study is to prepare for this future by requiring those interested in shaping future public policy to gain a greater
Rating:Essay Length: 1,500 Words / 6 PagesSubmitted: June 9, 2010 -
Health in Your Own Hands
In response to the question of what I am most thankful for, I said I am most grateful to god for leaving me with great health. Maintaining good health and preventing illness is not an easy task and requires major responsibility. Health is with the individual when they take that first breath and with them when they take the last. In that sense, it is the individual’s responsibility to maintain good health since they are
Rating:Essay Length: 670 Words / 3 PagesSubmitted: February 27, 2010 -
Health Indices
HEALTH INDICIES Health indicies are critically important to epidemiological study of disease and health trends and thus important to the overall understanding of community health and areas of community health in need of help. Crude death rates are affected by many population characteristics, particularly age structure2. Age Adjusted Death Rates (AADR) are thus useful, since they eliminate the confounding variable of age. In Zip Code 11105, the death rates from the years 1997 to 1999
Rating:Essay Length: 1,779 Words / 8 PagesSubmitted: December 17, 2009 -
Health Level 7
Health Level 7 For my presentation I chose the topic HL7. After doing the bit of research on the internet I found what HL7 was? The question that I will address is what does the name HL7 means, and why and how it was organized. What is HL7? Health Level Seven is one of the several American National Standards Institutes (ANSI) to give credit for standards Developing Organizations (SDOS) operating in the healthcare place. Health
Rating:Essay Length: 1,211 Words / 5 PagesSubmitted: March 23, 2010 -
Health of Body, Health of Existence
Never in recorded history has man fully renounced the tradition of including meat in a basic diet (Yount). The practice of vegetarianism has grown in popularity in recent years, causing many to speculate as to whether this is a beneficial choice to make. The arguments are not limited to health problems, but also include moral objections and human anatomical problems. Vegetarianism may seem like an advantageous decision to make, as the arguments for it are
Rating:Essay Length: 679 Words / 3 PagesSubmitted: November 27, 2009 -
Healthcare and Medical Transcription
Health care today consists of many diverse specialties and subspecialties. One that is rarely known or spoken of in general is Medical Transcription. It is often confused with medical records and general dictation, but Medical Transcription is a specialty in a class of its own. Of all the medical branches that the general public has knowledge of, Medical Transcription shows as a big blank in most of our minds. Most MT departments are located
Rating:Essay Length: 1,438 Words / 6 PagesSubmitted: April 6, 2010 -
Healthcare Law
Introduction Informed consent for medical treatment is much easier to state than to apply. It’s defined as “the voluntary agreement, by a patient, to medical care with full understanding of his or her condition, the nature of the proposed treatment, alternative treatments, risk that may be associated with treatment, and risk of no treatment at all” (Diaz, 2004, p. 181). The attainment of informed consent of minors can be very complicated due to the
Rating:Essay Length: 673 Words / 3 PagesSubmitted: February 19, 2010 -
Healthful Eating
Many of today’s families are constantly on the go. Therefore, finding time for family style meals that are also healthy can be a difficult task. To assure that families, especially children, eat healthy there are some very simple steps that parents can take. Studies have shown that taking these steps to promote healthful eating habits in children can have long lasting benefits. “Some past studies have suggested that when parents and children regularly connect over
Rating:Essay Length: 1,647 Words / 7 PagesSubmitted: March 31, 2010 -
Healthful Eating: Avoiding Trans Fats
What the Girls Scout Cookies, Starbucks, and the Big Apple have in common? The answer is: they are all eliminating trans fats from their products. Apparently this artificial ingredient, also known as partially hydrogenated oil and hydrogenated oil, is contained in all processed foods that include in their ingredients partially hydrogenated oils or shortening, such as margarines, frying fats, crackers, baked goods, chips, cookies, and many more. Trans fats are also considered by many doctors
Rating:Essay Length: 256 Words / 2 PagesSubmitted: December 23, 2009 -
Healthy Eating Plan Comparison
Making the decision to change the lifestyle I was following, 11 weeks ago, was the most excellent decision made throughout my entire life. Losing my father to diabetes was an eye opener. The suffering that they go through is not something desirable. Not eating fast foods continues to be the regimen to follow. Eating every three hours and eating the recommended amounts of food not only is healthy, but it contributes to the well being
Rating:Essay Length: 1,528 Words / 7 PagesSubmitted: June 11, 2010 -
Healthy Forest Initiative: Is It Really Healthy?
As people of the twenty-first century, we are all too familiar with the frequent occurrence of wildfires in our nation’s forests. Each year millions of acres of woodlands are destroyed in brutal scorches. It has been estimated that 190 million acres of rangelands in the United States are highly susceptible to catastrophic fires (www.doi.gov/initiatives/forest.html.). About a third of these high-risk forests are located in California (www.sfgate.com). These uncontrollable blazes not only consume our beautiful forests
Rating:Essay Length: 1,259 Words / 6 PagesSubmitted: May 10, 2010 -
Heart
Bum bum, bum bum, that is the sound of your heart. Your heart is located to the left of your chest. Its purpose is to get blood to your entire body. The heart is a muscle, which many people don’t know. Your heart is about the size of your fist, and is not in the normal heart shape. The heart has four chambers filled with blood. Each side of the heart has 2 chambers.
Rating:Essay Length: 405 Words / 2 PagesSubmitted: December 28, 2009 -
Heart and Breathing Rate M/f Before and After Exercise
Science: Abstract: This investigation is to show the raspatory and circulatory systems in deeper meaning. It also explains the reasons for why breathing and heart rate becomes higher during physical activity, and if there are any differences between female and males. This experiment shows the biological principles, and how to record and produce data of a quality standard. Introduction: Air goes into the alveoli when we breathe in. This lets the veins around the alveoli
Rating:Essay Length: 1,276 Words / 6 PagesSubmitted: November 14, 2009 -
Heart Attack
A heart attack affects thousands of people each year leading to almost half a million deaths a year, in the US, and this does not even include the ones who make it a survive. It is a chronic illness that happens because the arteries, which are the vessels that supply oxygen through the blood to the heart, are more narrowed. Since the have become more normal they are unable to carry a normal amount of
Rating:Essay Length: 369 Words / 2 PagesSubmitted: December 23, 2009 -
Heart Disease Symptoms
Heart Disease Symptoms What is your heart telling you? Heart problems can take you by surprise. Suddenly, you are hunched over with chest pressure, pain or even a heart attack. These are frightening symptoms of coronary artery disease (sometimes called atherosclerosis or hardening of the arteries). This disease means that your heart is not getting enough blood. The good news is that surgery and basic life style change can give your heart another chance. Warning
Rating:Essay Length: 380 Words / 2 PagesSubmitted: November 8, 2009