Science Essays
Mans Effect on the Environment
Mans Effect on the Environment Man�s Effect on the Environment 1) SOURCES OF POLLUTION Freshwater Environments : Man pollutes freshwater all over the world in many ways there is much waste and pollution that ends up in rivers. One of the main hazards is called eutrophication, this process becomes enriched with artificial nutrients from fertilisers which run off into the rivers and upset the natural nutrient cycle of the river, lake or pond. The water turns green because of ...
Mans discovery of fossil fuels could be his downfall
Mans discovery of fossil fuels could be his downfall. discus Throughout the entire history of mankind, the technological advancements that civilisations have made have always been tied in with the development of energy sources. The first human energy technology was fire, along with human labour as the major energy source. This has bee supplemented by animals for agriculture and transportation since at least the dawn of agriculture some 10,000 years ago. Wind and waterpower for milling grain ...
MPD
MPD Multiple Personality Disorder (MPD) Dissociative Identity Disorder (DID) Multiple Personality Disorder (MPD), which is now called Dissociative Identity Disorder (DID), is a Dissociative Disorder. This disorder is when a person has two or more distinct personalities that often control the person�s behavior. This disorder has many controversies because of the fact that it is not scientifically proven. One personality is usually restrained and rather dull while another one...
Magic and Science
Magic and Science Many events were unexplainable and maybe even seemed to be magical before science evolved to what it is today. All questions relating to the origin of life can be answered scientifically. One may question their beliefs based on scientific theory. Human life can be broken down to fundamental theory. Not only geological or biological, but also all events can be answered scientifically. Magic and magicians have certain function in society. The impossible becomes unexplai...
Male pattern baldness
Male pattern baldness Male Pattern Baldness Androgenic alopecia or male pattern baldness is a typical pattern of hair loss in men, which is for the most part caused by a single dominant autosomal gene. Other factors include the male hormone androgen, age, and genetic predisposition. Each month the scalp hair grows at an average rate of half an inch. Every hair has an approximate lifetime of four to seven years, which after this it falls out and is replaced by a new hair. For...
Mammals
Mammals Mammal, common name applied to any warm-blooded animal belonging to the class that includes humans and all other animals that nourish their young with milk, that are covered with varying amounts of hair, and that possess a muscular diaphragm. Mammals have the most highly developed nervous systems of all animals. Most members of the group have four appendages, usually legs. These may be adapted for use as swimming appendages, as in seals, or as wings, as in bats. Some Ty...
Lyme disease
Lyme disease In the early 1970s, a mysterious clustering of arthritis occurred among children in Lyme, Connecticut, and surrounding towns. Medical researchers soon recognized the illness as a distinct disease, which they called Lyme disease. They subsequently described the clinical features of Lyme disease, established the usefulness of antibiotic therapy in its treatment, identified the deer tick as the key to its spread, and isolated the bacterium that caused it. Lyme disease is still m...
Lymphoma
Lymphoma Lymphoma Lymphoma or lymphatic cancer is a very serious and life threatening disease. In this country there is an estimated 63,900 new cases, 7,100 of which are Hodgkin’s lymphoma as opposed to non-Hodgkin’s lymphoma. Since around the 70’s the occurrence of non-Hodgkin’s lymphoma has almost doubled while the occurrence of Hodgkin’s disease has declined. (Steen, 1993) Lymphoma is the name given to a cancer that infects the lymphatic system. I...
Lyra the star
Lyra-the star LYRA A pale blue light in the lower part of Lyra shines the Th brightest star in the sky, Vega. This brightest star of Lyra is moderately above Caster and below Regulas in the Hertzpring-Russell diagram. It is between spectral classes B and A and between 10 and 100 times the real brightness of the sun. Vega ignites it's reign sky with it's intensity and accents the musical constellation it is contained within. The Roman's harp-star of the northern hemisphere shines togeth...
MP3paper
MP3paper The advancements in technology haven�t only improved how we work, it has also improved how we play. There is a whole new aspect of entertainment being developed by this technology. Not only are video games reaching new highs, but there are also new types of entertainment emerging. There are now new ways to listen to music, via MP3s. MP3 is �Shorthand for Moving Picture Experts Group-1, Audio Layer-3�(Isenberg). MP3s are files that are compacted and able to be downloade...
Luggerhead turtle
Luggerhead turtle Luggerhead Turtle I'am writing this paper on the Luggerhead Turtle. The Luggerhead turtle goes through a lot in its lifetime. In this report on the turtle you will learn about what dangers it goes through, so read on. The Luggerhead is born underground in sand near the shore and takes about thirty-six hours to dig itself out of the nest. When it is born it is the about the size of a child's hand. It eats the Portuguese Man of War, a very deadly jellyfish. It ...
Lung cancer 2
Lung cancer 2 Lung Cancer Lung cancer is a carcinoma that develops in the epithelial cells that form the interior lining to the lungs. The airways get the most exposure to inhaled pollutants, thus most people who get lung cancer are smokers. Lung cancer is not just one disease. There are many types of cancer that form in the lungs most of which you can only see through a microscope. The most common cancer of the lungs is epidermoid. It is also known as squamous carcinoma beca...
Lung cancer 3
Lung cancer 3 Cancer Today it seems that their is nothing that won't give you cancer and nothing that cant help save you from it. Almost everyday we find a new way to protect ourselves from it either by modifying are diet to include or disclude something or by changing the products and materials that we use day to day. It seems that every time a new bit of information comes out in the fight to find a cure; a new cancer causing item is found. In the following pages I will discuss what c...
Lung cancer
Lung cancer “Lung cancer is an uncontrolled, extremely deadly division of cells in the lung” (World Book, “Lung Cancer”). The two major types of lung cancer include small and non-small cell. Many different risk factors contribute to lung cancer. There are numerous symptoms that are difficult to detect in the early stages of lung cancer. Doctors use special machines to detect the severity of each stage. Treatments and cures differ in each individual case. Lung ca...
Longitude
Longitude Longitude: The True Story of a Lone Genius Who Solved the Greatest Scientific Problem of His Time is written by Dava Sobel. The book is called Longitude because it is about a clock maker who was able to determine longitude. Determining longitude was the superlative scientific question in the eighteenth century that Galileo and Newton were not able to resolve. The principal inspiration behind the invention completed in this book is that many sailors were lost at seas as a resu...
Lsd 2
Lsd 2 The use of drugs among Americans is rapidly rising. They can be bought and sold almost anywhere, from the streets to hallways of schools. A drug on the rapid rise from the 70's is LSD. Some people attribute this to the fact it is extremely inexpensive, $2-4 a hit, the wrong belief by users that it is a safer drug than marijuana because it isn't physically addicting. However, LSD is a hallucinogenic drug that is very dangerous, despite popular belief. LSD stands for Lyser...
Lsd 3
Lsd 3 On October 27, 1906, a child by the name of Albert Hofmann was born(Albert, 1). This child would grow up to change the world forever. His research would create of subcultures of both the 1970’s and 1990’s. His discoveries would cause both grief and delight. His work in pharmacology brought the world one of the most terrifying discoveries of the 20th century, LSD It was a prosaic day in July, 1938 when Swiss chemist, Albert Hofmann, first discovered Lysergic Acid Die...
Lsd
Lsd Table of Contents Introduction Table 1:Effects of LSD A Brief Foray Into Philosophy and the Cognitive Sciences The Suspects Figure 1: Structure of LSD Overview of Synaptic Transmission Theory: LSD Pre-synaptically Inhibits 5-HT Neurons Theory: LSD Post-synaptically Antagonizes 5-HT2 Receptors Figure 2: LSD Binding at 5-HT2 Receptor Theory: LSD Post-synaptically Partially Agonizes 5-HT2 Receptors Theory: LSD Post-synaptically Agonizes 5-HT1 Receptors Conclusion ...
Linux against microsoft windows
Linux against microsoft windows Linux Against Microsoft Windows Linux is a free operating system that was developed on the internet.It was formed by Linus Torvalds first,then he put its source code to his web page.After that,the internet hackers and the programmers developed it.It is a Unix-like operating system because it is the main reason to develop the Linux.By the time,it becomes a big organization and now it is a powerful, advanced operating system.It has an important featur...
Linux vs nt
Linux vs nt Comparing any network operating system is really like comparing an apple to an orange. To judge between the underlying functionality of each operating system geared towards different networking environments is too broad of a subject to come to a reasonable conclusion. However, one could argue about the advantages and disadvantages pertaining to the Unix based Linux operating system and the infamous Windows NT operating system. I can compare and contrast these two operating sys...
Lions
Lions Lions Physical Characteristics Lions have relatively short-legged, long, muscular bodies and large heads. The male grows on average to 1.7 to 2.5 m (5.6 to 8.2 ft) long, not including the tail, which is 90 to 105 cm (36 to 41 in) in length. It stands 1.23 m (4 ft) high at the shoulder, and it weighs 150 to 250 kg (330 to 550 lb). The mane, which covers the head and neck, sometimes extends to the shoulders and belly. The mane will vary in color and length; well-fed, healthy li...
Local area network bridges
Local area network bridges Local Area Network Bridges Both the physical distance that Local Area Network (LAN) can cover and the number of hosts that can be attached to it are limited. To overcome this limitation, bridges are introduced as devices which connect LANs at the MAC layer. The purpose of bridges is to allow hosts attached to different LANs to communicate as if they were located on the same LAN. In contrast to repeaters, that act at the physical layer and allow all traffic to ...
Long term affects of fas
Long term affects of fas Research Paper After seeing a man like that I considered myself very lucky. Physically you could call him a man, but mentally he was a young boy. I don't remember his name, but we'll call him Joe. Joe's mother drank while he was in utero. As a result he suffered from fetal alcohol syndrome. Too many women don't realize the developmental effects of using drugs and alcohol during pregnancy. As a result of this many cases of fetal alcohol syndrome go unn...
Lighting advancments
Lighting advancments Have you wondered why streetlights are yellow, or why the year 2000 cars have brighter headlights and they are a different color? Have you ever wondered how the indiglo light on your watch works, or why it glows green and not white? And did you know that same indiglo light can be used while frozen, dipped in water, bent in half, stepped on, or in hazardous environments. Lighting has changed over the last few years; there are advantages and disadvantages of different kind...
Lightning
Lightning Lightning, the thunderbolt from mythology, has long been feared as an atmospheric flash of supernatural origins. In the East, early statues of Buddha show him carrying a thunderbolt with arrows at each end. Indian tribes in North America believed that lightning was due to the flashing feathers of a mystical whose flapping wings produced the sound of thunder. Today, scientific rather than mystical techniques are used to explain lightning with experimental procedures replaci...