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 1,291 - 1,320
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Drug Response in the Elderly
The response to drug treatment seen in the elderly is very different to that seen with younger patients. Altered drug response in the elderly is often associated with changes in the body that result in modification to the pharmacokinetics of the drugs in older people. Absorption changes result from Morphological changes to the gastrointestinal mucosa. GI function changes have an effect on enzymatic breakdown, dissolution, and drug ionization which then leads to alterations in oral
Rating:Essay Length: 304 Words / 2 PagesSubmitted: November 27, 2009 -
Drug Use in Sports
Drug Use in Sports The fierce competitive nature of the modern sports’ world, in combination with society’s demand for excellence, has caused athletes to seek alternative means to enhance their performance. Today's athlete faces an increasingly difficult choice: to use drugs to enhance performance or to accept what could amount to a competitive handicap. It is a choice, which carries significant ethical considerations. Should athletes be permitted to make this choice, or should society, through
Rating:Essay Length: 2,784 Words / 12 PagesSubmitted: February 18, 2010 -
Drugs
Like a plague, drug addiction has swept through much of the world covering the high industrialized countries as well as the least developing countries. It is found that one third of the world population takes drugs or at the risk to take, them later and nineteen per cent of death are caused by drugs. Yet, there is an increase in drug addiction. There are many types of drugs present in many forms and use differently.
Rating:Essay Length: 1,326 Words / 6 PagesSubmitted: April 9, 2010 -
Drugs
These days, drugs can be found everywhere, and it may seem like everyone's doing them. Many teens are tempted by the excitement or escape that drugs seem to offer. But learning the facts about drugs can help you see the risks of chasing this excitement or escape. Read on to learn more. The Deal on Substances Thanks to medical and drug research, there are thousands of drugs that help people. Antibiotics and vaccines have revolutionized
Rating:Essay Length: 532 Words / 3 PagesSubmitted: May 10, 2010 -
Drugs Affecting Uterine Smooth Muscle
INTRODUCTION Smooth muscle fibers in different organs are distinctly different from each other in their physical dimensions, organization into bundles or sheets, response to stimuli, characteristics of innovation, and function. Smooth muscle is responsible for the contractility of hollow organs, such as blood vessels, the gastrointestinal tract, the bladder and the uterus. Specifically in the uterus, regulation of smooth muscle contraction is under the influence of an octapeptide known as oxytocin. Oxytocin is released through
Rating:Essay Length: 392 Words / 2 PagesSubmitted: April 24, 2010 -
Drugs and the Environment
10/30/05 Env. Studies Drugs and the environment There is no question that cocaine and heroin production is a problem for everyone. Many people die every year from these drugs, either from drug use or being killed in some drug related situation. There are many ways to fight this very difficult problem but none will completely destroy the drugs. Along with standard methods of catching these criminals, there has been many unorthodox methods in use. My
Rating:Essay Length: 670 Words / 3 PagesSubmitted: January 3, 2010 -
Ductus Arteriosus
The Ductus Arteriosus (DA) is a temporary blood vessel connecting the main vessel leading to the lungs to the main vessel of the body. If the vessel stays open after birth it is called a Patent Ductus Arteriosus; patent meaning open. What the DA does is before birth the fetus receives oxygen from the placenta. The fetus does not use his/her lungs, so very little blood needs to go to them. So what is does
Rating:Essay Length: 333 Words / 2 PagesSubmitted: April 21, 2010 -
E=mc2
--Exhibit Contents-- Exhibit HOME Formative Years The Great Works - 1905 World Fame Public Concerns Quantum and Cosmos Nuclear Age Science and Philosophy "The World As I See It" - - - - - - - - - - - - - - - - - - - - More About Einstein Site Contents "In light of knowledge attained, the happy achievement seems almost a matter of course, and any intelligent student can grasp
Rating:Essay Length: 490 Words / 2 PagesSubmitted: November 25, 2009 -
Ear
The ear is an organ of the body that is used for hearing and balance. It is connected to the brain by the auditory nerve and is composed of three divisions, the external ear, the middle ear, and the inner ear. The greater part of which is enclosed within the temporal bone. The ear is looked upon as a miniature receiver, amplifier and signal-processing system. The structure of the outer ear catching sound waves as
Rating:Essay Length: 1,464 Words / 6 PagesSubmitted: February 5, 2010 -
Earth
For year’s man have studied the earth and the atmospheres to understand how life only exists on earth. There are many factors that have to work together in order for this to happen. The study of the earth and its structure is called Geology. Earth is the third planet from the sun and the fifth largest. Planet earth is only a tiny part of the universe. Earth is the only planet whose English name
Rating:Essay Length: 1,092 Words / 5 PagesSubmitted: December 15, 2009 -
Earth
EARTH Earth is the planet we live on. Earth is a huge sphere, or ball, that goes around the sun in a circle. It is covered with water, rock, and soil and surrounded by air. Animals and plants live almost everywhere on Earth's surface. They can live on Earth because it is just the right distance from the sun. Living things need the sun's warmth and light. But if Earth were closer to the sun,
Rating:Essay Length: 1,584 Words / 7 PagesSubmitted: February 18, 2010 -
Earth Abides
Social Science Research Network (SSRN) is devoted to the rapid worldwide dissemination of social science research and is composed of a number of specialized research networks in each of the social sciences. We have received several excellence awards for our web site. Each of SSRN's networks encourages the early distribution of research results by publishing Submitted abstracts and by soliciting abstracts of top quality research papers around the world. We now have hundreds of journals,
Rating:Essay Length: 257 Words / 2 PagesSubmitted: March 31, 2010 -
Earth and Atmospheric Science
Earth and Atmosphere Science Name: Joshua Maria ID: UNI-1896-2018 Environmental Science Year 1 Coastal erosion processes. Erosion occur when physical material such as rock and sediments are relocated by the impacts of wind, water (wave, current, tides), Ice, or gravity. During a coastal erosion the rough waves action produced be the sea and strong wind are forced against the cliffs causing air compression in the joins of the rocks which cause it to crack and
Rating:Essay Length: 1,489 Words / 6 PagesSubmitted: June 19, 2019 -
Earth and Our Solar System
Earth is the only planet in our solar system that sustains life, and therefore one of the most intriguing planets because of its capabilities. Each of the seven other planets that orbit the same sun as Earth is interesting in its own way. Some planets share similar characteristics to those found on Earth, while other planets are completely different. An analysis of these terrestrial bodies, using comparative planetology, will allow us examine these qualities. However,
Rating:Essay Length: 1,357 Words / 6 PagesSubmitted: January 21, 2010 -
Earth Science - Rocks
Sedimentary and Metamorphic rocks пЃ® Rocks formed when sediments are cemented or compacted once these sediments are deposited. пЃ® Constitutes about 5% of the Earths crust. пЃ® Many of these rocks also contain fossils. пЃ® Many of these rocks are important economically. (Energy resources) Classification of sedimentary rocks пЃ® Can be classified as 1) detrital and 2) chemical пЃ® 1.Detrital: Rocks formed mostly by mechanical weathering пЃ® Grouped based on particle size: -Coarse (Ex .
Rating:Essay Length: 370 Words / 2 PagesSubmitted: November 28, 2009 -
Earth: A Living Planet
Earth: A Living Planet To care for our planet we must understand how it opperates. Ecology is the study of interactions of organisms with one another and with their physical surroundings. Scientists who study ecology are called ecologists. Earts is a biosphere, or a living globe. The biosphere is that part of the Earth in which life exists. Biospheres include all the areas of land, air, and water on the planet. The biosphere goes about
Rating:Essay Length: 1,589 Words / 7 PagesSubmitted: February 15, 2010 -
Earth: Hot or Not?
Earth: Hot or Not? The term “Global Warming” is used by people to refer to the phenomenon of global change caused by human activities, which result in an increase in greenhouse gases, carbon dioxide, in the atmosphere. These greenhouse gases: water vapor, carbon dioxide, methane, and others keep the ground temperatures at an average of approximately fifty-eight degrees Fahrenheit. Without Greenhouse gases the average temperature would drop two degrees Fahrenheit, and all the oceans would
Rating:Essay Length: 1,553 Words / 7 PagesSubmitted: April 16, 2010 -
Earthquake
Earthquake Many people think that an earthquake is just a simple rattle in the earth the destruction from this type of natural disaster can be devastating. Seismologists have been studying earthquakes for many years to help us to figure out where and when they are going to happen. An earthquake is the trembling of the earth’s surface caused by rapid movement of the earth’s rocky outer layer. They occur when energy stored in the earth,
Rating:Essay Length: 636 Words / 3 PagesSubmitted: November 19, 2009 -
Earthquake Loads & Earthquake Resistant Design of Buildings
Earthquake Loads & Earthquake Resistant Design of Buildings 1. 1 2. Summary 2 3. Earthquake Design - A Conceptual Review 2 4. Earthquake Resisting Performance Expectations 3 5. Key Material Parameters for Effective Earthquake Resistant Design 3 6. Earthquake Design Level Ground Motion 4 6.1. Elastic Response Spectra 4 6.2. Relative Seismicity 5 6.3. Soil amplification 6 7. Derivation of Ductile Design Response Spectra 7 8. Analysis and Earthquake Resistant Design Principles 8 8.1. The
Rating:Essay Length: 7,097 Words / 29 PagesSubmitted: February 15, 2010 -
Earthquakes
I chose to do my assignment on earthquakes because I have always wondered about what causes something that can be so destructive to man and nature alike. One of the papers I chose is titled ‘Comparison of Short-Term and Time-Independent Earthquake Forecast Models for Southern California’ by Agnes Helmstetter, Yan Kagan, and David Jackson. They discuss how they initially developed a time-independent forecast for the southern California area. They can reasonably predict magnitude 5 or
Rating:Essay Length: 1,672 Words / 7 PagesSubmitted: November 12, 2009 -
Earthquakes
Future Shocks Future Shocks showed how scientists can better predict where earthquakes will occur by studying the past. Researchers are now able to pinpoint the date, hour and size of an earthquake from the past, by studying ghost forests. The researchers compare the rings of the trees of known age that have survived earthquakes, with the rings of the ghost forest trees. The study of the past is very important because scientists still cannot predict
Rating:Essay Length: 262 Words / 2 PagesSubmitted: December 20, 2009 -
Earthquakes
Earthquakes Earthquakes occur almost everyday all over the world. Most of the time earthquakes are not strong enough to be felt by people, but the shaking caused by an earthquake can be recorded by a seismometer. These machines are located all over the world to ensure detection of earthquakes of all strengths. Only occasionally will a larger magnitude earthquake strike and cause damage to the region. There are many faults around the world and depending
Rating:Essay Length: 1,387 Words / 6 PagesSubmitted: February 28, 2010 -
Earthquakes
Earthquakes, one of mother natures most powerful forces. What are they and were do they occur from? Most of the famous mountains known today are a result of earthquakes. Well to be factual, they actually are formed from what’s causing the earthquake to happen. To understand that though you need to understand the composition of our earth and what really is going on inside it. Knowing how we study Earthquake activity is what really puts
Rating:Essay Length: 1,019 Words / 5 PagesSubmitted: April 9, 2010 -
Earthquakes
An earthquake is a natural disaster that can have incredibly destructive results on the earths crust and endanger many living organisms that dwell on that crust. An earthquake occurs when massive amounts of stored energy are released from the earth. This release of energy can be caused by the slipping of tectonic plates or sometimes even be influenced by humans. Earth is a stratified planet. This means that it is made up of multiple layers.
Rating:Essay Length: 619 Words / 3 PagesSubmitted: April 11, 2010 -
Earthquakes
Most naturally occurring earthquakes are related to the tectonic nature of the Earth. Such earthquakes are called tectonic earthquakes. The Earth's lithosphere is a patchwork of plates in slow but constant motion caused by the release to space of the heat in the Earth's mantle and core. The heat causes the rock in the Earth to flow on geological timescales, so that the plates move slowly but surely. Plate boundaries lock as the plates move
Rating:Essay Length: 1,303 Words / 6 PagesSubmitted: April 21, 2010 -
Earthquakes
I have learned a lot about earthquakes these past few weeks. For instance, I had no clue that earthquakes and volcanoes were related. Among the many things I learned, here are a few of the most important things. What is an Earthquake? - An earthquake is a shaking of the ground caused by the sudden shifting of large sections of the earth's crust. Earthquakes are one of the most powerful events on earth, and
Rating:Essay Length: 336 Words / 2 PagesSubmitted: May 2, 2010 -
Earth’s Ecosystem in Danger
The study, by 1,360 experts in 95 nations, said a rising human population had polluted or over-exploited two thirds of the ecological systems on which life depends, ranging from clean air to fresh water, in the past 50 years. "At the heart of this assessment is a stark warning," said the 45-member board of the Millennium Ecosystem Assessment. "Human activity is putting such strain on the natural functions of Earth that the ability of the
Rating:Essay Length: 561 Words / 3 PagesSubmitted: January 25, 2010 -
![Earth’s Em Field [day After Tomorrow]](/previews/00754/35bdbd05a886be923ff2a446926005ed.jpg "Earth’s Em Field [day After Tomorrow]")
Earth’s Em Field [day After Tomorrow]
Earth’s EM Field Where does earth get it’s electromagnetic field? What does earth’s EM field do? Does it protect us from solar winds, if it does, what would happen if it failed? Questions from the movie The Core answered. Where does earth get it’s electromagnetic field? Well, in my research I have found that earth’s outer core does in fact spin, the motion of spinning metallic liquid of nickel, and iron create an electromagnetic current
Rating:Essay Length: 300 Words / 2 PagesSubmitted: April 14, 2010 -
Easily Made Silicon-Based Chemicals from Sand
Word Count 504 Easily Made Silicon-based Chemicals from Sand I believe this new process of creating silicon-based chemicals from sand will revolutionize the industry by decreasing costs and increasing productivity. University of Michigan Professor and materials scientist, Richard Laine, discovered a relatively non-toxic and inexpensive way of producing a many different kinds of silicon-based chemicals. This Process uses sand or rice hull ash and antifreeze to create needed chemicals while helping to decrease costs
Rating:Essay Length: 628 Words / 3 PagesSubmitted: December 1, 2009 -
Eastern Grey Squirrels Environmental Impact in Europe
Eastern Grey Squirrels Environmental Impact in Europe The Eastern Grey Squirrel is the largest tree squirrel in the world. It’s predominately found in North America and its favorable habitat includes large forests with vast amounts of hickory and oak trees, which provides a habit of plentiful food supply and agility from predators. The Eastern Grey squirrel’s increasing population throughout Europe has produced a growing concern for the environment because the invasive specie has dominated the
Rating:Essay Length: 663 Words / 3 PagesSubmitted: November 18, 2009