Science Essays
Cfc
Cfc The beginning of the CFC(chlorofluorocarbons) era started in 1928, when CFC' were invented by a Du Pont chemist. CFC' were best known as "freons" and became famous as a safe, nonflammable refrigerant. It's invention became a great triumph when Freon took the place of sulfur dioxide or ammonia which was used as the working liquid in refrigerators. It eventually became widely used in automobile air conditioners and nontoxic propellants in aerosol cans. It's insulating properties also was u...
Chacma baboon
Chacma baboon The chacma baboon, like all living things, has a scientific classification. It is in the family Cercopithecidae. It�s scientific name is Papio ursinus, which means that Papio is it�s genus and ursinus is the species. The chacma baboon is in the Chordata phylum. The kingdom of it is Animal. The chacma baboon is also a Mammal for the class. The order of the chacma baboon is carnivore because it eats other animals. The chacma baboon also has a structure to it. ...
Changing world
Changing world The world is changing rapidly. A single technological development can lead to an infinite number of consequential developments each of which having varying impacts on humanity. These impacts, or indicators, display the results of technological development. Climactic, global economic, social, and energy related indicators are important in showing humanity's use of technoscience, and demonstrate that certain political and economic changes are needed so that technoscientists can ...
Chaparral
Chaparral The chaparral is a major ecosystem and vegetation type composed of woody shrubs that form a dense thicket about 3 to 13 ft high. The species that live in the chaparral are adapted to very dry summers and mild rainy winters. The plants grow in extensive, but discontinuous stands on hillsides and mountain slopes from south-central Oregon southward through the coast ranges of California and the foothills of the Sierra Nevada. The chaparral is at its fullest in development at southe...
Cells
Cells Cells Cells are some of the smallest organisms around. All living things consist of cells, and yet they are invisible to the naked eye. How and why are they so small? Well, cells are the basic structural and functional units of life. As life on earth has evolved into organisms of different species and living things, two basic laws of nature have dictated why cells have remained so small. One is simply, shorter is faster. This is true as far as diffusion is concerned and also in ter...
Cellular metabolism and fermentation
Cellular metabolism and fermentation CELLULAR METABOLISM AND FERMENTATION Glycolysis, the Universal Process | Anaerobic Pathways | Aerobic Respiration Glycolysis, the Universal Process | Nine reactions, each catalyzed by a specific enzyme, makeup the process we call glycolysis. ALL organisms have glycolysis occurring in their cytoplasm. At steps 1 and 3 ATP is converted into ADP, inputting energy into the reaction as well as attaching a phosphate to the glucose. At steps 6 and 9 ...
Cellular radio, isdn networks and satellite communications
Cellular radio, isdn networks and satellite communications Introduction In describing Cellular Radio, ISDN (Integrated Services Digital Network) and Satellite Communications we must first have a general understanding of the meaning of these forms of Telecommunications. After a brief explanation of the different forms, they will be described in more detail. Then the present and future roles in Irish Telecommunications will be looked at and some examples given. This will then lead to t...
Censorship
Censorship Censorship, making the world a better place. Censorship affects our society in many different ways, it affects the music we listen to, the movies we watch, the books we read, and many other aspects of our everyday lives. Even though many might argue that censorship doesn�t really have a place in a society that emphases freedom of speech and the freedom to express oneself, but censorship is an essential and needed part of our growing society, it�s needed in the television ...
Causes of schizophreniz
Causes of schizophreniz Schizophrenia is one of our most important public health problems. It is a common, tragic, and devastating mental illness that typically strikes young people just when they are maturing into adulthood. Once it strikes, morbidity is high (60 percent of patients are receiving disability benefits within the first year after onset), (1) as is mortality (the suicide rate is 10 percent). (2) Despite the fact that people with schizophrenia are all around us (the lifetime pre...
Cd roms
Cd roms CD:ROM drives are the thing of the future. CD:ROMs are used in almost every computer around the world. CD:ROM stands for COMPACT DISK READ ONLY MEMORY. That means that you can only read information off the disk. Three and a half disks are disks that you can read and wriye infromation from. Five and a quarter can do the same thing , but do not hold as much information. Five and a quarter disketts are very old. they stopped making those a while ago. In the ninteen ninty's they are t...
Cdr
Cdr CDR Recordable Compact Disk (CD-R) is a blank CD with the ability to be recorded onto. The unit that is used to write data to these blank CD�s is called a CD Writer or �Burner.� This unit is not unlike a normal CD drive, the difference being that it has two lasers one invisible, one visible. The invisible, is used for writing data onto the surface of the blank CD. The visible, is for reading information off the CD. The unit itself is currently for use in a computer system only...
Celiac sprue disease
Celiac sprue disease What if your doctor told you that eating a certain food say pizza would be devastating to your health? You might not like it, but you'd learn to live with it. But what if it was more than just pizza? What if you were told to avoid all bread, breadcrumbs, and pasta? And dozens of breakfast cereals, canned soups, luncheon meats, and salad dressings? And a wide variety of ice creams, ice cream cones, cookies, cakes, puddings, and pies? And most chewing gum, beer, canned tun...
Cardiovascular conditioning
Cardiovascular conditioning Conditioning Assignment: Cardiovascular Conditioning Cardiovascular conditioning can be defined as the efficient transport and utilization of necessary oxygen and nutrients to the tissues of the body. The cardiovascular system needs to be well conditioned to enable the body to deliver adequate oxygenated blood and nutrients to the working muscles, in addition to improving the muscles� capacity to use extra oxygen. Cardiovascular training is the most import...
Cardiovascular disease
Cardiovascular disease Risks factors for cardiovascular disease that can and can not be changed. The risks factor for cardiovascular disease have been categorize by the American Heart Association (AHA) as the following: (1) Major risks factors that can not be changed (increasing age, male gender, and heredity). (2) Major risk factors that can be changed (cigarette/tobacco smoke, high blood cholesterol, high blood pressure, and physical inactivity).(3) Other factors diabetes, Obes...
Carpal tunnel syndrome
Carpal tunnel syndrome What is Carpal Tunnel Syndrome? Carpal tunnel syndrome is a painful nerve problem that disrupts the use of your hand or hands. At first, you may have numbness, tingling, or burning in your hands. Shooting pain in your wrist or forearm may come after, and your grip may become weak. Cause The cause of carpal tunnel syndrome is when the tissue or bone puts pressure on the nerve of the hand that runs from your neck through your wrist to your fingers. Other cause...
Catscan
Catscan I chose this topic because I a found it as a very interesting thing which I wanted to know more about. I have been CT-scanned when I had concussion after a car accident when I was seven. Also because my father has been under a CT-scanner and a lot of my friends. Anatomists, morphologists and biologists have tried to understand the way living creatures are living, and what they look like inside. Dr. Frourie in 1974 painfully cut organisms into thin slices, to study their internal a...
Causes of schizophrenia
Causes of schizophrenia Causes of schizophrenia, bipolar disorder and related illnesses Illnesses like schizophrenia bring untold misery to sufferers and their families. The suffering is magnified because of the unique stigma attached to these illnesses. Unlike other illnesses, it marks not only afflicted individuals, but also their relatives. For example the concept of the "schizophrenogenic mother" was rife till recently. Such suffering is unnecessary and probab...
Carbohydrates
Carbohydrates There are three principal kinds of carbohydrates and each are classified according to the number of sugar molecules they contain. Monosaccharides, such as ribose, glucose, and fructose, contain only one sugar molecule. Disaccharides consist of two sugar molecules linked covalently. Familiar examples are sucrose (table sugar), maltose (malt sugar), and lactose (milk sugar). Polysaccharides, such as cellulose and starch, contain many sugar molecules linked together. Monosacchar...
Carbon dioxide poisoning
Carbon dioxide poisoning Carbon Monoxide Poisoning Imagine that it is the first really cold night of the winter season. You begin to feel a chill in the house so you decide it's time to turn on the furnace. So you get up out of your chair and adjust the thermometer. After a while you notice that it has not really warmed up much in the house. So you decide to check it again just as soon as you get something for this awful headache that just came on. But, as you get up out of your chai...
Carbon dioxide
Carbon dioxide Carbon Dioxide is an unreactive, colourless, odourless gas that occurs in small quantities in the earth's atmosphere naturally. The earth's ocean, soil, plants and animals release CO2. The formula of Carbon Dioxide is CO2. The CO2 molecule contains 2 oxygen atoms that each share 2 electrons with a carbon atom to form 2 carbon - oxygen double bonds. The atoms are arranged as so (OHT). This is called a 'linear molecule'. Carbon dioxide is commonly found as a gas and is...
Cardiac pacemakers
Cardiac pacemakers Cardiac Pacemakers The heart is bestowed with a specialized system that automatically generates rhythmic control via the sinus node, located in the superior lateral wall of the right atrium near the opening of the superior vena cava. The specialized pacemaker cells dictate control of the rest of the heart through regular electrical impulses that propagate from the right atria to the lower ventricles. The rapid conduction of these impulses cause the muscle cells of t...
Cancer treatments and breakthroughs
Cancer treatments and breakthroughs Cancer is not a single disease. It includes a large group of varied disorders that share major traits. The first sign of cancer is an enlargement of the area. The tumor then infects other cells near it, and if it's really advanced, these cells may break away from the tumor and spread the cancer throughout your body. Although many people believe that your survival rate is low if you're diagnosed with cancer, patients usually have high recovery rates. There ...
Cannabis sativa
Cannabis sativa Cannabis Sativa Marijuana is available anywhere in the world, as the black market is widespread and thriving very well. It has even started to be widespread in local malls where all kinds of hemp (marijuana) products for everyday use are becoming available. Marijuana goes under many names like Pot, Grass, Hash, Reefer, MaryJane, Weed and there are also names that depict the potency and place of origin like Bungo the Egyptian weed, Ganja the Jamaican weed, and Beu the...
Cannabis
Cannabis The effect of drugs can be harmful to the body. They can damage nerves at are use for thinking. According to the "Nation Institutes of Health"(NIH), cannabis is one of the most popular used drugs in America ranking third after tobacco and alcohol. Marijuana (the most common form used in America), is made of the dried leaves and flowers of the cannabis sativa plant, and looks like oregano. It is usually smoked in a pipe or in hand-rolled cigarettes. Hashish (hash) is a dried-caked ...
Capacitors
Capacitors Capacitors A device for storing an electrical charge is called a capacitor or electrical condenser. Capacitors in their simplest form consist of two metal plates, which are separated by a nonconducting layer called the dielectric. As one plate gets charged with a direct- current such as a positive charge, the other plate will be charged with the opposite sign such as a negative charge. The larger the capacitor, the more electrically charge it can absorb. Capacitors are lim...