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miss using of technology
தொழில்நுட்பத்தை பயன்படுத்தி மிஸ்
最后更新： 2018-12-16
使用频率： 1
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disadvantages of technology
தொழில்நுட்பத்தின் தீமைகள்
最后更新： 2020-08-10
使用频率： 2
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use of technology essay
தொழில்நுட்ப கட்டுரையின் பயன்பாடு
最后更新： 2020-03-09
使用频率： 1
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advantages of technology in tami
நன்மைகள் மற்றும் தொழில்நுட்பம், தீமைகள்
最后更新： 2017-10-26
使用频率： 2
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advantages and disadvantages of technology
நன்மைகள் மற்றும் தொழில்நுட்பம், தீமைகள்
最后更新： 2018-03-21
使用频率： 3
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bachelor of technology tamil meaning
tamil
最后更新： 2024-10-01
使用频率： 1
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advantage and disadvantage of technology development
தொழில்நுட்ப வளர்ச்சியின் நன்மையும் தீமையும்
最后更新： 2018-08-04
使用频率： 3
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fthe hassia redatron packaging machines are built according to the present level of technology and comply with the safety trends currently in use.
தமிழ் மொழிபெயர்ப்பு சேவை இலவச ஆன்லைன் ஆங்கிலம்
最后更新： 2014-11-07
使用频率： 1
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introduction to air pollution air pollution is the presence of foreign substances in the atmosphere, emitted by industries and motor vehicles that cause damage to living organisms. air pollution characteristics air pollution characteristics in a particular region are influenced by: o the type and amount of pollutant and their source of emission. o the topographical and meteorological conditions affecting dispersion, concentration and transboundary transport of pollutants. o the type of technology and various raw materials used in the manufacturing process and the type and quantum of emissions. o the extent of industrialization and population density. air pollutants air pollutants refers to the liquids, solids and gases that are not normal constituents of air that in certain concentration may be hazardous to plant life including human beings. air pollutants include oxides of carbon, nitrogen and sulphur, halogenated and non-halogenated hydrocarbons, suspended inorganic particulate matters, inorganic and organic acids, insecticides, bacteria, viruses etc. sources of air pollutants major sources of air pollution are natural sources and man-made source. a. natural sources: volcanic eruptions, forest fires, deflation of sands and dusts, storms, etc. pollutants from natural sources volcanoes: ashes, smokes, carbon dioxide dust and other gases. land surface: salts spray from seas and ocean, dusts and soil particles from ground-surface. extraterrestrial bodies: cosmic particles and rays, chest produced due to bombardment of asteroid materials, comets etc. with the earth. green plants: pollen grains of plant flowers. fungi: fungal spores, viruses. b. man-made (anthropogenic) sources industries, automobiles, agriculture, power plants, domestic sources, etc. pollutants from manmade sources industries: smokes, fumes, dust, particulate matters. domestic sources: gases from kitchen, domestic heating. automobiles: smoke, fumes, emissions from different vehicles. agriculture: insecticides, pesticides and herbicides. power plants: heat from the power plants, smokes, fly ash. classification of air pollutants air pollutants can also be divided into two categories: primary pollutant and secondary pollutant. 1. primary pollutants primary pollutants are those that art, directly emitted from the sources, e.g. ash, smoke, dust, fumes, spray, mist, inorganic gases such as carbon dioxide, carbon monoxide, hydrogen sulphide, sulphur dioxide, ammonia, nitric oxide and radioactive compounds. 2. secondary pollutants the secondary pollutants are those that are formed in the atmosphere by chemical interactions among primary pollutant and normal atmospheric constituents e.g. sulphur-trioxide, nitrogen-dioxide, ozone, different hydro-carbons, etc.
காற்று மாசுபாடு கட்டுரை
最后更新： 2015-08-13
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