نتایج جستجو برای: soc storage increased about 176 and 495 p
تعداد نتایج: 17105941 فیلتر نتایج به سال:
3 R. W. Ditchburn, D. H. Fender, and Stella Mayne, "Vision with controlled movements of the retinal image," J. Pliysiol. (London) 145, 98-107 (19.59). U. Tulunay-Keesey and L. A. Riggs, "Visibility of Mach bands with imposed motions of the retinal image," J. Opt. Soc. Am. 52,719-720 (1962). A. L. Yarbus, Eye-movements and Vision (Plenum, New York, 1967), p. 86. R. W. Ditchburn and A. E. Drysdal...
Under 5 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181 5.5 5 to 9 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220 6.7 10 to 14 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234 7.1 15 to 19 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246 7.5 20 to 24 years . . . . . . . . . . . . . . . . . . . . ....
employees always concern about losing their job , or in other word , losing their income resources. for this purpose, every government requires strong system for covering these concerns. the unemployment insurance (ui) program’s can be used for achieving this goal. in this thesis, we price ui based on the insurance history of employee and the duration of being unemployed. we use the weibull dis...
Caragana microphylla, a native perennial leguminous shrub, is widely used for desertification control in China’s Horqin Sandy Land. We investigated the effects of afforestation using C. microphylla in areas with fixed and active dunes on soil carbon (C) and nitrogen (N) storage in the soil total and light-fraction (LF) organic matter. Compared to the values in the control areas, soil organic ca...
Vegetation fires may alter the quantity and quality of organic matter inputs to soil, rates of organic matter decay, and environmental factors that influence those processes. However, few studies have evaluated the impacts of this land management technique on soil organic carbon (SOC) and total N in grasslands and savannas. We evaluated the impact of repeated fires and their season of occurrenc...
with the increasing population and the need for more food, as well as with the development of science and technology, human approach to unnatural and often chemical inputs to increase agricultural production has been a great expansion and problems such as increased cancers, chronic diseases has created environmental pollution. implementation of organic organic is a solution to these problems . ...
abstract there is not much sources about ancient carnival and ceremonies , but some information can be gain from documents . as a matter of fact the ceremonies were a part of zarartiyan principles which zartosht had taken them to his religion . it should be mentioned that the oldest ceremonies are about poster and agriculture principles this seasonal ceremonies were very important for agri...
abstract: mineral scaling in oil and gas production equipment is one of the most important problem that occurs while water injection and it has been recognized to be a major operational problem. the incompatibility between injected and formation waters may result in inorganic scale precipitation in the equipment and reservoir and then reduction of oil production rate and water injection rate. ...
the study reflected in this thesis aims at finding out relationships between critical thinking (ct), and the reading sections of tofel and ielts tests. the study tries to find any relationships between the ct ability of students and their performance on reading tests of tofel and academic ielts. however, no research has ever been conducted to investigate the relationship between ct and the read...
Increased nitrogen (N) deposition is common worldwide. Questions of where, how, and if reactive N-input influences soil carbon (C) sequestration in terrestrial ecosystems are of great concern. To explore the potential for soil C sequestration in steppe region under N and phosphorus (P) addition, we conducted a field experiment between 2006 and 2012 in the temperate grasslands of northern China....
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