· Veeläbilaskvus sõltub eelkõige pinnase poorsusest (seda mõjutavad ka pinnaseosakeste kuju ja teised välised tegurid). · Hästi laseb vett läbi jämedateraline suurte pooridega pinnas. · Suur poorsus ei tähenda veel suurt veeläbilaskvust. Näiteks savi poorsus on suur (üle 50%), aga vett laseb väga vähe läbi. Graniidi, savi, liivakivi ja moreeni poorsus GRANIIT SAVI porosity poorsus permeability läbilaskevõime low madal hi - kõrge LIIVAKIVI MOREEN Põhjavee kujunemine Põhjavee tase kuival perioodil Kaev Veetase jões Veetase Veetase maapinnas kaevus Põhjavee tase kuival perioodil Kaev Veetase jões Veetase
nsf (24.03.2014) 2. Larry F. Jeffus: ,,Welding: Principles and Application" WORD LIST WORD MEANING IN ESTONIAN electrode elektrood arc spark created by electron kaarleek flow slag protects the weld seam räbu nozzle device designed to control otsik the direction of a flow porosity Void fraction poorsus tungsten a material of which volfram electrodes are made inductance induktiivsus electrical current flow of electric charge elektrivool shielding Protecting something kaitse conductive having the property of elektrit juhtiv conducting something STRUCTURE OF THE TALK
naturally occurring unprocessed crude oils and petroleum products that are made up of refined crude oil. A fossil fuel, it is formed when large quantities of dead organisms, usually zooplankton and algae, are buried underneath sedimentary rock and undergo intense heat and pressure. Petroleum is recovered mostly through oil drilling. This comes after the studies of structural geology (at the reservoir scale), sedimentary basin analysis, reservoir characterization (mainly in terms of porosity and permeable structures). It is refined and separated, most easily by boiling point, into a large number of consumer products, from petrol (or gasoline) and kerosene to asphalt and chemical reagents used to make plastics and pharmaceuticals. Petroleum is used in manufacturing a wide variety of materials, and it is estimated that the world consumes about 88 million barrels each day. The use of fossil fuels such as petroleum can have a negative impact on Earth's
the driving force. appropriate firmness, and sufficient flexibil- The high rate of air circulation decreases ity, are very important. During drying the air-side drying resistance too. The prod- uct-sided resistance depends on the porosity • the initial plasticity comes to an end. of the casing, the mold, and the fat film on • the mentioned attributes increase. the surface. This resistance steadily increases • chewiness and sliceability improve. during the process, lowering the drying rate.
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