Lexikon
Data Quality Objectives (DQO) are qualitative and quantitative statements derived from the DQO process describing the decision rules and the uncertainties of the decision(s) within the context of the problem(s).
DQO process is a quality management tool that enables planners to focus their planning efforts by specifying the use of the data (the decision), the decision criteria (action level) and the decision maker’s acceptable decision error rates. The products of the DQO process are the DQOs.
Double Data Rate Synchronous Dynamic Random Access Memory
German Society for Chemical Engineering and Biotechnology is a non-profit scientific and technical society based in Frankfurt am Main, Germany. It has more than 5,500 private and institutional members, among them scientists, engineers, companies, organisations and institutes.
One aim of DECHEMA is to promote and support research and technological progress in Chemical Technology and Biotechnology DECHEMA regards itself as interface between science, economy, state and public.
a unit used to express relative difference on power, usually between acoustic or electric signals, equal to ten times the common logarithm of the ratio of the two level.
Read more:
http://www.animations.physics.unsw.edu.au/jw/dB.htm
wind-erosion deflation is the detachment and transport of fine solid particles soil, sediment or rock by wind action. Its stages are detachment, abrasion, deposition and accumulation of the transported material. The extent of wind erosion depends on the wind velocity, wind direction, texture and organic matter content of the surface layer, soil moisture and relief. The areas mostly exposed to wind erosion are the arid environments such as deserts.The action of the wind in removing material from a surface can result even in lowering that surface below sea level. Most of the dust carried by dust storms is in the form of silt-size particles forming loess deposits. The Glacial loess having a high content of glacially ground flour-like and clay entrained by the wind and then deposited downwind had an important role in the formation of soils in Hungary.
di(2-ethylhexyl)phthalate
delayed death in toxicity testing means that an animal does not die or appear moribund within 48 hours but dies later during the 14-day observation period.
a disease or an injury that happens as a result of exposures that might have occurred in the past.
for non-threshold effects, the underlying assumption is that a no-effect-level cannot be established and a DMEL therefore expresses an exposure level corresponding to a low, possibly theoretical, risk, which should be seen as a tolerable risk. (Source: REACH Glossary)
is the production of irreversible damage of the skin; namely, visible necrosis through the epidermis and into the dermis, following the application of a test substance for up to four hours. Corrosive reactions are typified by ulcers, bleeding, bloody scabs, and, by the end of observation at 14 days, by discoloration due to blanching of the skin, complete areas of alopecia, and scars. Histopathology should be considered to evaluate questionable lesions.
is the production of reversible damage of the skin following the application of a test substance for up to 4 hours.
desertification means land degradation in arid, semi-arid and dry sub-humid areas resulting from various factors, including climatic variations and human activities;
Combating desertification includes activities which are part of the integrated development of land in arid, semi-arid and dry sub-humid areas for sustainable development which are aimed at:
- prevention and/or reduction of land degradation;
- rehabilitation of partly degraded land;
- reclamation of desertified land.
UNCCD, the United Nations Convention to Combat Desertification in Countries Experiencing Serious Drought and/or Desertification, Particularly in Africa joins forces and actions all over the world.
See also: http://www.unccd.int/convention/text/convention.php
the lowest concentration of a chemical that can reliably be distinguished from a zero concentration.
in analytical chemistry, the detection limit is the lower limit of detection, or LOD (limit of detection), is the lowest quantity of a substance that can be distinguished from the absence of that substance (a blank value) within a stated confidence limit (generally 1%). The detection limit is estimated from the mean of the blank, the standard deviation of the blank and some confidence factor. Another consideration that affects the detection limit is the accuracy of the model used to predict concentration from the raw analytical signal.
There are a number of different "detection limits" that are commonly used. These include the instrument detection limit (IDL), the method detection limit (MDL), the practical quantification limit (PQL), and the limit of quantification (LOQ). Even when the same terminology is used, there can be differences in the LOD according to nuances of what definition is used and what type of noise contributes to the measurement and calibration.
Source: http://en.wikipedia.org/wiki/Detection_limit
Diabetes mellitus - often simply referred to as diabetes - is a condition in which a person has a high blood sugar (glucose) level as a result of the body either not producing enough insulin, or because body cells do not properly respond to the insulin that is produced. Insulin is a hormone produced in the pancreas which enables body cells to absorb glucose, to turn into energy. If the body cells do not absorb the glucose, the glucose accumulates in the blood (hyperglycemia), leading to various potential medical complications.
in geology and oceanography, diagenesis is any chemical, physical, or biological change undergone by a sediment after its initial deposition and during and after its lithification, exclusive of surface alteration (weathering) and metamorphism. These changes happen at relatively low temperatures and pressures and result in changes to the rock's original mineralogy and texture. The boundary between diagenesis and metamorphism, which occurs under conditions of higher temperature and pressure, is gradational.
the aim of dietetics is topromote good health through proper eating. The dietitian supervise the preparation and service of food, develop modified diets, participate in research, and educate individuals and groups on good nutritional habits. In a medical setting, a dietitian may provide specific artificial nutritional needs to patients unable to consume food normally.
digestive enzymes are enzymes that break down polymeric macromolecules into their smaller building blocks, in order to facilitate their absorption by the body. Digestive enzymes are found in the digestive tract of animals (including humans) where they aid in the digestion of food as well as inside the cells, especially in their lysosomes where they function to maintain cellular survival.
Digestive enzymes are diverse and are found in the saliva secreted by the salivary glands, in the stomach secreted by cells lining the stomach, in the pancreatic juice secreted by pancreatic exocrine cells, and in the intestinal (small and large) secretions, or as part of the lining of the gastrointestinal tract.
Digestive enzymes are classified based on their target substrates:
- Proteases and peptidases split proteins into their monomers, the amino acids.
- Lipases split fat into three fatty acids and a glycerol molecule.
- Carbohydrases split carbohydrates such as starch and sugars into simple sugars such as glucose.
- Nucleases split nucleic acids into nucleotides.
In the human digestive system, the main sites of digestion are the oral cavity, the stomach, and the small intestine. Digestive enzymes are secreted by different exocrine glands including:
- Salivary glands
- Secretory cells in the stomach
- Secretory cells in the pancreas
- Secretory glands in the small intestine