Science
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4,609 Essays on Science. Documents 2,011 - 2,040
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Heart Diseases
-A- Aneurysm-This term refers to a localized dilation of an artery or chamber of the heart. The behavior and prognosis for aneurysms varies, depending on their size and location. Aneurysms of the heart are usually the result of a prior heart attack. They generally don't require surgical resection. They may result in congestive heart failure and arrhythmias. Aneurysms of the main artery of the body, the aorta, generally require resection once they reach a certain
Rating:Essay Length: 9,855 Words / 40 PagesSubmitted: May 30, 2010 -
Heart Failure
Heart Failure Heart failure occurs when the heart is not pumping as well as it should be, and thus cannot deliver blood to the rest of the body. A human body is dependent on the heart in order to deliver oxygen and nutrient-rich blood to the body’s cells. If the body’s cells are not nourished properly, the body cannot function the way it normally should. When the heart does not supply the body’s cells with
Rating:Essay Length: 1,756 Words / 8 PagesSubmitted: January 3, 2010 -
Heart Lab
Lab Partners: Rose, Christa Hypotheses: 1. Null Hypothesis: Male heart rates will equal female heart rates after climbing the stairs at UWMC. 2. Alternative Hypothesis 1: Male heart rates will be more than females after climbing the stairs at UWMC from the bottom to top. 3. Alternative Hypothesis 2: Female heart rates will be more than male heart rates after climbing the stairs at UWMC from the bottom to top. Prediction: If males and
Rating:Essay Length: 427 Words / 2 PagesSubmitted: March 23, 2010 -
Heart of an Adult
The adult human heat is about 5 inches long and 3.5 inches wide, weighing less than 1 pound. The importance of a healthy heart is to circulate blood throughout the body. When the heart stops beating, life stops as well. The heart is located in the thoracic cavity. This places the heart between the lungs, behind the sternum, in front of the thoracic vertebrae, and above the diaphragm. Although the heart symmetrically located, its axis
Rating:Essay Length: 743 Words / 3 PagesSubmitted: December 26, 2009 -
Heart Rate
It is known to everyone who exercises, that the human body has its own way to measure exercise intensity; in other words, your heart rate. People may not be aware that there are ways for them to know what their maximum heart rate is, in order to be safe while exercising. This can be measured in various different ways; using age, a Cardio Assessment, and a Metabolic Assessment. Heart rate can change by several different
Rating:Essay Length: 781 Words / 4 PagesSubmitted: December 10, 2015 -
Heart Rate Before and After Exercise
Introduction: Heart Rate is defined as the amount of times a person’s heart beats in one minute. A resting heart rate is the person’s heart rate prior to any activity or exercise. As activity increases, the heart rate will increase in speed. An increased heart rate is essential as it replaces oxygen in the muscles that is used during said activity and gets rid of excess carbon dioxide through the blood stream. Blood pressure is
Rating:Essay Length: 442 Words / 2 PagesSubmitted: April 2, 2010 -
Heartbeats
Heart rate is the term used to describe the frequency of the cardiac cycle. It is usually calculated as the number of contractions of the heart in one minute. Heart rate is usually measured in "beats per minute" (bpm). The heart rate can increase as a response to a wide variety of conditions in order to increase the cardiac output, the amount of blood ejected by the heart per unit of time. Resting heart
Rating:Essay Length: 908 Words / 4 PagesSubmitted: January 24, 2010 -
Heat Convection
________________ Abstract A double pipe heat exchanger is examined by experimental methods for single-phase flow. The fluid is water at atmospheric pressure. Temperature measurement is made throughout the set point 9 for H951 and set point 6 for H950 system. Mass flow rate of hot and cold water was control by the nob. Heat is supplied to the inner tube stream by an involvement heater. The heat transfer coefficient was calculated using the stander correlations.
Rating:Essay Length: 1,101 Words / 5 PagesSubmitted: April 25, 2015 -
Heat of Combustion Experiment
Alkanols Heat of Combustion Aim: To determine the molar heat of combustion of methanol, ethanol and 1-propanol Materials: • 3 spirit burners, one containing methanol, one containing ethanol and one containing 1-propanol. • A thermometer • A copper calorimeter • 100 ml measuring cylinder • Retort stand and clamps • Stopwatch • Matches • Electronic balance Safety assessment: • This experiment contains flammable materials remove loose clothing such as ties which could be set alight.
Rating:Essay Length: 664 Words / 3 PagesSubmitted: June 5, 2010 -
Heat of Fusion
Specific heat capacity is the heat needed to raise the temperature of one gram (g) of a substance by one degree Celsius. Specific heat capacity plays a role in the amount of heat absorbed or released by a substance because when there is high specific heat it takes a lot of energy to raise its temperature but when there is, low specific heat it does not take a lot of energy to raise its temperature.
Rating:Essay Length: 423 Words / 2 PagesSubmitted: May 10, 2011 -
Heath's Experiment Lab
Miss Tomlinson EXPERIMENT 18B Feb. 17, 2017 Kaede Kawano The Iodine Clock Reaction Block C Objectives: 1. To observe and record the effect of changing the concentration of a reactant on the rate of a reaction 2. To observe and record the effect of changing the temperature of a system on the rate of a reaction 3. To observe and record the effect of the nature of the reactants on the rate of a reaction
Rating:Essay Length: 2,502 Words / 11 PagesSubmitted: May 8, 2017 -
Heath's Lab 18b
Miss Tomlinson EXPERIMENT 18B Feb. 17, 2017 Kaede Kawano The Iodine Clock Reaction Block C Objectives: 1. To observe and record the effect of changing the concentration of a reactant on the rate of a reaction 2. To observe and record the effect of changing the temperature of a system on the rate of a reaction 3. To observe and record the effect of the nature of the reactants on the rate of a reaction
Rating:Essay Length: 2,502 Words / 11 PagesSubmitted: May 10, 2017 -
Helena Carter
Born May 26, 1966, in London, England. The great-granddaughter of British Prime Minister Herbert Henry Asquith, Bonham Carter enjoyed a privileged childhood.During her teenage years, she modeled for Yardley products and appeared in a number of television commercials, making her acting debut in the British TV movie A Pattern of Roses (1983). In 1985, Bonham Carter landed the lead role in Trevor Nunn�s Lady Jane, a historical film about Lady Jane Grey and her
Rating:Essay Length: 424 Words / 2 PagesSubmitted: January 18, 2010 -
Hemophilia
Hemophilia is the oldest known hereditary bleeding disorder. There are two types of hemophilia, A and B (Christmas Disease). Low levels or complete absence of a blood protein essential for clotting causes both. Patients with hemophilia A lack the blood clotting protein, factor VIII, and those with hemophilia B lack factor IX. A person with severe hemophilia has less than 1% of the normal amount of a clotting factor - either Factor VIII (8) or
Rating:Essay Length: 2,657 Words / 11 PagesSubmitted: November 14, 2009 -
Hemophilia
Hemophilia is a genetic bleeding disorder. People who have hemophilia have a deficiency or an absence of a coagulation protein. A blood clotting factor is deficient or absent. Bleeding is most often into joints, such as the knee, elbow, or ankle, but bleeding can occur anywhere in the body. People with hemophilia bleed longer, not faster. The severity of hemophilia varies greatly. Hemophilia A and Hemophilia B are the most common genetic bleeding disorders.
Rating:Essay Length: 2,160 Words / 9 PagesSubmitted: December 13, 2009 -
Hemophilia
According to the dictionary Hemophilia is a hereditary disorder in which the blood fails to clot normally, causing prolonged bleeding from even minor injuries. This is only the very basis of this disorder. First of all there are two kinds of Hemophilia. Hemophilia A and Hemophilia B. Hemophilia A is caused by lack of protein factor VIII and is found in 80% of hemophiliacs. Other names for this are classical hemophilia, factor VIII deficiency hemophilia.
Rating:Essay Length: 873 Words / 4 PagesSubmitted: January 15, 2010 -
Hemophillia
Hemophilia By Chelsea Stevenson Biology 30 Mr Friesen May 18, 2005 Hemophilia is a hereditary bleeding disorder. (1, 36)(2, 759)(3, 529)(5, ____) (6) (7) (8) (10) (12) (13) (14) Hemophilia is a disease where the blood does not clot normally. (1, 36)(3, 529)(2, 759)(5,____)(6)(10)(13) “Hemo” means blood and “philla” means a tendency towards.(6)(7) In most people when they get a cut the platelets plug the hole and release chemicals which attract proteins and activate
Rating:Essay Length: 1,317 Words / 6 PagesSubmitted: December 24, 2009 -
Hepatitis
INTRODUCTION It is estimated that about three Percent of the world’s population carries the hepatitis virus. Viruses reproduce with the help of the host cell, they don’t contain ribosomes, cytoplasm and membrane-surrounded organelles. Hepatitis is caused by infected blood, similar to the HIV virus. There are at least six different hepatitis viruses: A, B, C, D, E, F. However, I am going to focus mainly on the most common types (A, B and C). Type
Rating:Essay Length: 1,482 Words / 6 PagesSubmitted: March 9, 2010 -
Hepatitis B
Hepatitis B Hepatitis B can be prevented with a highly effective vaccine, but this year ten to thirty million people will become infected with the hepatitis B virus. I feel that because this disease is preventable, only knowledge can help reduce the number of people infected. Hepatitis B is a serious liver disease caused by the hepatitis B virus. This virus is a blood-borne pathogen. It is one hundred times more infectious than HIV. “Hepatitis
Rating:Essay Length: 428 Words / 2 PagesSubmitted: January 25, 2010 -
Hepatitis C
Hepatitis C : The Silent Epidemic Introduction Did you know that over two hundred million people are infected with the Hepatitis C Virus (HCV)? Unfortunately it is true, and twenty five thousand more are infected each year. Out of these victims, three are acquaintances of mine. They are why I chose to research this Silent Epidemic. In this paper you will not only learn about the virus itself, but also ways to recognize and prevent
Rating:Essay Length: 1,660 Words / 7 PagesSubmitted: January 3, 2010 -
Hepatitis C
Hepatitis C has been referred to as a "Silent Epidemic," since it usually progresses slowly over many years. Most people who are infected with hepatitis C are not aware of any noticeable symptoms for as long as one to two decades after they are infected. In fact, by the time symptoms appear, the virus has probably already begun to damage the liver. If the liver is injured and stops functioning, death will always be the
Rating:Essay Length: 1,013 Words / 5 PagesSubmitted: April 13, 2010 -
Hepititis
Hepatitis In modern society when a person gets sick with the flu or a cold they will usually go about their normal routine with the exception of a sneeze or a cough throughout the day. Sometimes things can be more than what they appear to be. The symptoms start out like the flu with coughing, fever, aches, and vomiting. However, the disease gradually worsens with symptoms of extreme weakness and excrushatating abdominal pain. By then
Rating:Essay Length: 1,663 Words / 7 PagesSubmitted: November 15, 2009 -
Hera
Although, Hera is a loved goddess by many mortals and other gods and goddesses, if she found out her husband Zeus was sleeping with another woman, she would punish his lovers and their children until death. She was a very jealous wife and would do anything to protect marriage. Hera was the daughter of Cronos and Reah, sister of Poseidon, Hestia, Hades, Demeter, and Zeus (brown.edu). Hera’s worship is known to go back farther than
Rating:Essay Length: 595 Words / 3 PagesSubmitted: June 1, 2010 -
Herbal Medicine
Herbal medicine is the extraction of herbs or plants which have a medicinal value in treating illnesses and diseases (Brody 1). A herb is known as a plant that does not have a woody stem and usually dies back at the end of each growing season. It is also known as a "natural" drug because they are derived from nature. This is unlike pharmaceutical drugs, which are synthesized from chemicals. Herbal medicine dates back
Rating:Essay Length: 1,319 Words / 6 PagesSubmitted: January 22, 2010 -
Hereditary
Hereditary Introduction: My topic is "hereditary." I have always been interested in genetics, and this is a large branch of genetics. In this report I also plan to speak about evolution. I would like to learn more about what causes specific traits and what the future might bring. Body: A person gets his or her traits from their parents. These traits include everything from the person's sex to their mental abilities or problems. These traits
Rating:Essay Length: 982 Words / 4 PagesSubmitted: December 12, 2008 -
Hereditary Methemoglobinemia
Hereditary methemoglobinemia is most commonly referred to as “the blue people disease” or “met-h”. It is believed that this disease started in Kentucky with the blue Fugates of troublesome creek. It was started about six generations ago with a man named Martin Fugate. He was a French orphan. Martin came here with his red-headed American bride (Elizabeth Smith). Her skin was as pale as pale could get. They had seven children, four of them are
Rating:Essay Length: 785 Words / 4 PagesSubmitted: December 11, 2009 -
Heredity Vs Environment
The age old debate Nature vs. Nurture. Are we the way we are because of how we are raised or are the actions and choices we make in life already hard-wired into our DNA when we are born? It is hard to be able to choose just one answer and go with it 100%. Scientist have been performing experiments for both sides of this debate for years now and the results seem to blend together
Rating:Essay Length: 574 Words / 3 PagesSubmitted: January 24, 2010 -
Herfindal Hirschman Index
Herfindal Hirschman Index • It is a measure of size of firms in relation to industry. • It is the indication of amount of competition among the firms • It is used in competition laws and anti-trust laws • It is the sum of squares of market shares of 50 largest firms within the industry, where market shares are expressed as percentage • It ranges from 0-10,000 moving from huge number of very small firms
Rating:Essay Length: 562 Words / 3 PagesSubmitted: April 26, 2011 -
Heroes
April 2008 There are some topics I save up because they'll be so much fun to write about. This is one of them: a list of my heroes. I'm not claiming this is a list of the n most admirable people. Who could make such a list, even if they wanted to? Einstein isn't on the list, for example, even though he probably deserves to be on any shortlist of admirable people. I once asked
Rating:Essay Length: 2,632 Words / 11 PagesSubmitted: February 12, 2010 -
Heroin
Heroin is a drug of extremes. For many people it is the most feared drug, while for others its powerful “high” offers the most dramatic way of escaping the cares and boredom of everyday life. It is the drug that immediately springs to mind when people talk about dependence and it forms the backbone of drug-treatment programmes in Britain and many other countries. Just why do people take a drug like heroin, if is has
Rating:Essay Length: 403 Words / 2 PagesSubmitted: December 19, 2009