tolerable exposure time

См. также в других словарях:

• Electron beam lithography — (often abbreviated as e beam lithography) is the practice of scanning a beam of electrons in a patterned fashion across a surface covered with a film (called the resist),cite book |last= McCord |first=M. A. |coauthors=M. J. Rooks |title=… …   Wikipedia

• Depth of field — The area within the depth of field appears sharp, while the areas in front of and beyond the depth of field appear blurry …   Wikipedia

• Health effects from noise — Roadway noise is a major source of exposure, particularly from tires Noise health effects are the health consequences of elevated sound levels. Elevated workplace or other noise can cause hearing impairment, hypertension, ischemic heart disease,… …   Wikipedia

• Collodion process — An old deteriorated wet plate featuring Theodore Roosevelt The collodion process is an early photographic process. It was introduced in the 1850s and by the end of that decade it had almost entirely replaced the first practical photographic… …   Wikipedia

• nutritional disease — Introduction       any of the nutrient related diseases and conditions that cause illness in humans. They may include deficiencies or excesses in the diet, obesity and eating disorders, and chronic diseases such as cardiovascular disease,… …   Universalium

• Vitamin D — is a group of fat soluble prohormones, the two major forms of which are vitamin D2 (or ergocalciferol) and vitamin D3 (or cholecalciferol).cite web|url=http://dietary supplements.info.nih.gov/factsheets/vitamind.asp|title=Dietary Supplement Fact… …   Wikipedia

• Dioxins and dioxin-like compounds — (DLC)[1] are by products of various industrial processes, and are commonly regarded as highly toxic compounds that are environmental pollutants and persistent organic pollutants (POPs).[2] They include:[1][3] Polychlorinated dibenzo p dioxins… …   Wikipedia

• Polychlorinated dibenzodioxins — See also: 2,3,7,8 Tetrachlorodibenzodioxin, Dioxins and dioxin like compounds, and 1,4 Dioxin General structure of PCDDs where n and m can range from 0 to 4 Polychlorinated dibenzodioxins (PCDDs), or simply dioxins, are a group of organic… …   Wikipedia

• Copper in health — Normal absorption and distribution of copper. Cu = copper, CP = ceruloplasmin, green = ATP7B carrying copper. Copper is an essential trace element that is vital to the health of all living things (humans, plants, animals, and microorganisms). In… …   Wikipedia

• Dental fluorosis — Classification and external resources A mild case of dental fluorosis (the white streaks on the subject s upper right central incisor) observed in dental practice ICD 10 K …   Wikipedia

• environment — environmental, adj. environmentally, adv. /en vuy reuhn meuhnt, vuy euhrn /, n. 1. the aggregate of surrounding things, conditions, or influences; surroundings; milieu. 2. Ecol. the air, water, minerals, organisms, and all other external factors… …   Universalium