Physical or mechanical weathering (for example, water gets into cracks in rock and then freezes, pushing against the rock from the inside); Chemical weathering(for example, oxygen interacts with iron in rocks, causing the iron to turn to rust and thus weakening the rock) Organic or biological ...
biologic weathering Biologic width biologic width of periodontal ligament biologic width of periodontal ligament biologic width of periodontal ligament biologic width of periodontal ligament BioLogic-HT system biologic-warfare (BW) agent biologic-warfare BW agent biological Biological & Chemical Biological & ...
in situ weatheringBiological soil crusts (BSCs) monitored over a 25-year period enhance the dissolution of the Ca-silicate plagioclase and the Mg-silicate olivine at Sonoran Desert and Colorado Plateau, USA, study sites. This first measured biological enhancement of weathering (BEW) for plagioclase...
In the pedagogical institutes biological education is, as a rule, complex and assures the training of teachers in two special fields: teachers of biology and chemistry, biology and fundamentals of agricultural production, or biology and geography. Students in pedagogical institutes study general scientif...
Chigira M, Oyama T (2000) Mechanism and effect of chemical weathering of sedimentary rocks. In: Kanaori Y, Tanaka K, Masahiro C (eds) Engineering geological advances in Japan for the new millennium, developments in geotechnical engineering, vol 84. Elsevier, pp 267–278 Google Scholar Chorus...
H., 1981. Reverse weathering and chemical mass balance in a coastal environment. In Martin, J. M., Burton, J. D., and Eisma, D. (eds.), River Inputs to Ocean Systems. Switzerland: UNEP-UNESCO, pp. 152–187. Morse, J. W., and Mackenzie, F. T., 1990. Geochemistry of ...
Topsoils were designed to be collected every 10 days during inoculation process but the site was not accessible on day 10 due to weathering conditions. Thus, they were collected on the 0th, 20th, 30th, 40th and 50th days after inoculation to explore the dynamic changes of physicochemical varia...
Acid mine drainage (AMD) is initiated by the hydro-geochemical weathering of sulfide bearing rocks (marcasite, arsenopyrite and pyrite) which are in contact with oxygen and water. The reaction is catalyzed by sulfur oxidizing microorganisms and Iron (Fe). For instance, coal mine wastes in ...
4.(Physical Geography) the wearing down of the surface of rocks, cliffs, etc, by erosion, weathering, or some other process 5.(Chemistry)chema breakdown of a molecule into atoms or smaller molecules 6.(General Physics)physicsan irreversible process in which the energy available to do work is...
Because of the relationship between altitude and temperature, few vegetation groups are distributed in the alpine cold weathering zone at 4200–4800 m and the alpine ice and snow zone above 4800 m. Summarily, the terrain and landforms in the region are unique and encompass all natural zoning ...