| carbon |
(Symbol C.) The 12th element in the periodic table, mass 12.000. Carbon is one of the most versatile elements and combines with itself and many other elements to form a huge variety of organic compounds, for example, hydrocarbons and their derivatives, some of which are found in the atmosphere. Elemental carbon occurs in the atmosphere, mostly in the form of soot from incomplete combustion of organic matter. Smoke particles also have a large proportion of carbonaceous material in them. ...
출처: amsglossary.allenpress.com/glossary/browse
|
|---|---|
| carbohydrate |
An organic compound based on the general formula C x (H 2 O) y , performing many vital roles in living organisms. The simplest carbohydrates are the sugars (saccharides), including glucose and sucrose. Polysaccharides are carbohydrates of much greater molecular weight and complexity; examples are starch, which serves as energy store in plant seeds and tubers; cellulose and lignin that form the cell walls and woody tissue of plants of plants; glycogen, etc.
출처: www.fao.org/docrep/003/X3910E/X3910E06.htm
|
| carbohydrate |
Compounds made up of chains of sugar units. Simple carbohydrates include table sugar (sucrose), milk sugar (lactose), and fruit sugar (fructose). Complex carbohydrates are very long chains held together by bonds that may not be digestible in the stomach and intestine of a carnivore. Starch is a digestible complex carbohydrate. Seed hulls such as oat bran are digestible by ruminants and horses, but not carnivores.
출처: www.peteducation.com/dict_alpha_listing.cfm
|
| carbohydrate |
Carbohydrates are organic compounds that consist of carbon, hydrogen and oxygen. They vary from simple sugars containing from three to seven carbon atoms to very complex polymers. Only the hexoses (sugars with six carbon atoms) and pentoses (sugars with five carbon atoms) and their polymers play important roles in nutrition. Carbohydrates in food provide 4 calories per gram.
출처: members.tripod.com/michellejp1/id12.html
|
| carbon tetrachloride |
A manufactured compound, most often found as a colorless gas. Because of its harmful effect on the ozone layer, the production and use of carbon tetrachloride in industrialized nations was banned in 1996 under the Montreal Protocol on Substances that Deplete the Ozone Layer. It is highly persistent and remains at levels of concern in the environment in the United States; it is an important hazardous air pollutant.
출처: www.epa.gov/envirohealth/children/background/gloss...
|