Science Essays
Depression 6
Depression 6 One of the scariest emotional experiences a person can ever suffer during their lifetime is to experience a form of depression. Over one in five Americans can expect to get some form of depression in their lifetime. Over one in twenty Americans have a depressive disorder every year. Depression is one of the most common and most serious mental health problems facing people today. However, depression is often not taken seriously because of the large use of antidepressant drugs ...
Data warehousing
Data warehousing Contents 1. Introduction 2. What is a data warehouse 3. Past, Present and Future 4. Data Warehouses and Business Organisations 5. Conclusion 6. Bibliography 1.0 Introduction In recent years, data warehousing has emerged as the primary method of analysing sales and marketing data for a competitive advantage. As the number of knowledge workers using the data warehouse/data mart grows and the amount of data increases daily, performanc...
Deep ocean trenches
Deep ocean trenches Deep Ocean Trench A trench is any long, narrow, steep-sided depression in the ocean bottom. The deepest known depression of this kind is the Mariana Trench, which lies east of the Mariana Islands in the western North Pacific Ocean . Of the Earth's 20 major trenches, 17 are found in the Pacific. The only Atlantic trenches are the Puerto Rico Trench north of the Caribbean islands and the South Sandwich Trench east of Drake Passage between South America and Antarctica. T...
Deficiencies in development of cocaine children
Deficiencies in development of cocaine children It has been estimated by the National Institute on Drug Abuse that every year 40,000 babies are born to mothers who have used cocaine during their pregnancy. Unfortunately, the outcome is unfair for these children, because the mothers do not take into consideration that they are responsible for another person�s life. These children have various levels of deficiencies in the learning process and in the way that they behave. The levels of defic...
Dementia
Dementia What is Dementia? Dementia is an organic brain syndrome which results in global cognitive impairments. Dementia can occur as a result of a variety of neurological diseases. Some of the more well known dementing diseases include Alzheimer's disease (AD), multi-infarct dementia (MID), and Huntington's disease (HD). Throughout this essay the emphasis will be placed on AD (also known as dementia of the Alzheimer's type, and primary degenerative dementia), because statistically ...
Dangers of computers
Dangers of computers In the last ten years, computers have become a necessity in our lives. We use them to program cars, buy grocery stores, run factories and in almost any area of technology imaginable. We use them on a daily basis in our homes and offices to do tasks such as word processing to ordering clothes over the internet. With all the conveniences that computers have to offer, not many stop to consider the dangers of such a powerful instrument. As the use of computers increases...
Dangers of steriods
Dangers of steriods Dangers of Anabolic Steroids In the past three decades, steroids has been becoming a serious problem more than ever in the athletic field. Steroids are anabolic drug "to build" growth hormones that include the androgens (male sex hormones) principally testosterone and estrogen and progestogens (female sex hormones). Steroids were first developed for medical purposes. They're used in controlling inflammation, strengthening weakened hearts, p...
Darwin and the victrian era
Darwin and the victrian era ...
Darwinism 2
Darwinism 2 Darwinism Darwinism, a scientific theory that supported the belief of evolution, was manipulated and applied to different areas of life, and thus it became the shaping force in European thought in the last half of the nineteenth century. Darwin, through observation of organisms, determined that a system of natural selection controlled the evolution of species. He found that the organisms that were most fit and assimilated to the environment would survive. They would also...
Darwinism
Darwinism The question of how man evolved has been pondered since man first stepped foot on this planet. Many great philosophers and explorers have made attempts to try to answer this question. Charles Darwin was one of these people. Darwin led a full life of exploration, and during these adventures, he accumulated much information about evolution. He met many explorers that had various ideas of their own about how man evolved. In discussion with these people, he figured out if what the...
Cyclones
Cyclones And their effect on the built environment They are known as Hurricanes in the Caribbean, Typhoons in the China Sea, Cyclones in the Indian Ocean and most commonly called Tropical Cyclones. You can call them what you want but they all have one thing in common: they are extremely destructive when they hit cities and towns. A cyclone is a huge mass of air moving in a spiral with winds that can reach up to 250 km/h. A cyclone starts off in the sea where the winds are calm and...
Cystic fibrosis
Cystic fibrosis CYSTIC FIBROSIS I am the doctor for your hospital and have prepared the following paper for you to look at and possibly use. It includes information on what cystic fibrosis really is, what treatments there are, what you two can do for your child, and how it is inherited. I hope this document is useful to you in your incoming struggle against this horrible disease. It is good to know that you are not alone. Every day four children in the United States are diagnosed...
Daltons atomic theory
Daltons atomic theory John Dalton developed the first useful atomic theory of matter around 1803. In the course of his studies on meteorology, Dalton concluded that evaporated water exists in air as an independent gas. Solid bodies can't occupy the same space at the same time, but water and air could. If the water and air were made of discrete particles, evaporation might be viewed as a mixing of water particles with air particles. He performed a series of experiments on mixtures of gases to...
Dams and resources
Dams and resources The Environmental Impacts of Large Dams Land and water are ecologically linked in a natural system called a watershed. From the smallest droplet to the mightiest river, water works to shape the land, taking with it sediment and dissolved materials that drain to watercourses and, in most cases, eventually to the sea. So is the river a product of the land it inhabits--the type of rock and soil, the shape of the land, and the amount of vegetation are some of the ...
Crude operatons oil and the environment
Crude operatons - oil and the environment Crude Operations: Oil and the Environment The environmental impacts of offshore oil drilling greatly outweigh the economic benefits provided. Although it has been a continuous activity for more than a decade, One can not help but wonder why offshore drilling continues when considering the pollution caused, how it eliminates the supply of natural resources, murders innocent sea creatures, and actually damages the national economy. There ar...
Cryogenic
Cryogenic Cryogenics is an entire field of physical science. It is the study of matter at temperatures much colder than those that occur naturally on Earth. Cryogenic temperatures are considerably lower than those encountered in ordinary physical processes. There is another field of interest associated with very cold temperature-cryonics. Cryonics is the practice of freezing of people, or just their heads, in liquid nitrogen after death in hopes that one day they can be thawed to the out ...
Cryogenics and the future
Cryogenics and the future Cryogenics and the Future Cryogenics is a study that is of great importance to the human race and has been a major project for engineers for the last 100 years. Cryogenics, which is derived from the Greek word kryos meaning "Icy Cold," is the study of matter at low temperatures. However low is not even the right word for the temperatures involved in cryogenics, seeing as the highest temperature dealt with in cryogenics is 100 (C (-148 (F) and the lowest tem...
Crystals
Crystals Melt Suspension Crystallization (MSC) is a technique, that can be used for large scale separation and ultrapurification of organic compounds. Because of the high selectivity of crystallization, the moderate operating conditions, and the relatively low latent heat of fusion, the energy consumption of these kind of processes is low. Furthermore, the use and regeneration of toxic or explosive solvents can be avoided. Thus, MSC can be regarded as an environmentally and economically prom...
Cyclohexanone
Cyclohexanone OXIDATION OF CYCLOHEXANOL TO CYCLOHEXANONE The oxidation of cyclohexanol to cyclohexanone involves the removal of hydrogen from the OH group. After separation and purification, an Infrared Spectrum will be run to determine the composition of the recovered material. Infrared Spectroscopy is a very powerful technique used in the determination of molecular structure and the identification of unknown organic materials. The infrared spec...
Creatine in sports
Creatine in sports Creatine Athletes today will do almost anything to get an edge. One of the primary things an athlete will do is put supplements into their body. These supplements range from protein shakes to illegal anabolic steroids. Some sports supplements are incredibly safe and effective, yet others work for a while and then fizzle out, while others still work well but do more damage than good in the long run. In the past athletes had to turn to such things as anabolic steroid...
Creatine
Creatine CREATINE Creatine, Beneficial or Waste of money? Having finally resolved to work out at the gym, you sweat and toil for weeks on end only to look in the mirror and see little to show for it. It's the paradox of the New Year's resolution exerciser. Seeing physical results can help exercisers stay true to their fitness programs, yet for many it takes months to achieve noticeable muscle changes. Creatine Monohydrate has become the most popular supplement in the world among individua...
Creation VS
Creation VS. Evolution Ever since the publication of Charles Darwin's The Origin of Species was published, there has been an ongoing debate between science and religion. Scientists have formulated many theories as to the origins of man and to the creation of the earth, whereas religious groups have one main creation theory, based on the "Genesis" story of The Bible. These theories, however, are not the cause of the debate because the different theories are simply myths meant to explain the u...
Creation of the beach
Creation of the beach PHYSICAL GEOGRAPHY Beach Formation in California coast Beaches are dynamic landforms altered by wind and waves in a continual process of creation and erosion. Seasonal cycles of sand deposition and loss dramatically affect the appearance of beaches from summer to winter. Wide and gently sloping in summer, they become steep-fronted and narrow in winter, and cam vanish overnight, stripped of sand by violent storm waves. Most of the sand removed from winter beaches ...
Coral
Coral Coral Reefs Coral reefs are arguably the world's most beautiful habitats. Coral reefs have been called the rainforests of the oceans, because of the rich diversity of life they support. Scientists have not yet finished counting the thousands of different species of plants and animals that use or live in the coral reef. There are three types of coral reefs: fringing reefs, barrier reefs, and atolls. Fringing reefs are located close to shore, separated from land by only shallow...
Coyote
Coyote The coyote is considered to be one of the last species of primitive dogs. It is called the master adapter and the ultimate survivor. Based on these titles alone, one can conclude that the coyote has thrived despite the habitat change implemented by human development and expansion. The coyote has always been a native of North America. However, it used to only populate the western part of the continent, whereas presently, coyotes can be found throughout the United States and Canada. ...