نتایج جستجو برای: 60 cm depths total n
تعداد نتایج: 2004638 فیلتر نتایج به سال:
Abstract. Lamichhane U, Ghimire P. 2022. Vertical distribution of soil properties and organic carbon in community managed forest Siwalik Hill, Nepal. Asian J For 6: 91-96. Nepal's Community Forestry (CF) approach is globally recognized as an innovative successful to resource management. Shorea robusta Gaertn. the dominant tree species which covers 19.28% total stem volume country's area. Soil r...
1. introduction isfahan oil refinery (isfahan, iran) is responsible for the production of huge amounts of oil waste. as the released organic compounds are highly toxic, carcinogenic, and mutagenic, they can potentially contaminate the soil and groundwater resources of the adjacent area. this is particularly important in isfahan where arid/semi-arid climate has limited the access to adequate sur...
introduction: on the basis of percent depth dose (pdd) calculation, the application of dosimetry in radiotherapy has an important role to play in reducing the chance of tumor recurrence. the aim of this study is to introduce a new formula for calculating the centeral axis percent depth doses of cobalt-60 beam. materials and methods: in the present study, based on ...
H. pylori infection is usually acquired in early childhood. Its role in gastrointestinal and extra intestinal complaints and serious consequences in adulthood make it as challenging issues. Despite different clinical presentations, in most children, the presence of H. pylori infection does not lead to clinically apparent disease, even when it causes chronic active gastritis. Some of most import...
A long-term high-saline soil environment will limit the improvement of quality and cotton yield. Modified tillage management measures can improve quality, establishment a evaluation system facilitate land production potential in southern Xinjiang. The objective this study was to determine effects different methods on saline fields three-year experiment conducted Tumushuke, Xinjiang, with deep v...
Laboratory bioassays using Culex quinquefasciatus larvae evaluated the effect of tadpole shrimp on the persistence of Bacillus thuringiensis var. israelensis (B.t.i.) in water collected from the surface of field microcosms. Time elapsed since B.t.i. treatment, as well as presence or absence of soil and tadpole shrimp, affected B.t.i. persistence at the water surface in 15- and 30-cm total depth...
Single capacitance sensors are sensitive to soil property variability. The objectives of this study were to: (i) establish site-specific laboratory calibration equations of three single capacitance sensors (EC-20, EC-10, and ML2x) for tropical soils, and (ii) evaluate the accuracy and precision of these sensors. Intact soil cores and bulk samples, collected from the top 20 and 80 cm soil depths...
Land use patterns and vegetation coverage in semi-arid areas of the Loess Plateau have undergone great changes due to implementation “Grain for Green” project. The introduction legume pasture species, such as alfalfa ( Medicago sativa L.) sweet clover Melilotus officinalis L.), is one most efficient methods restoration reconstruction this region. However, there a need an effective assessment ro...
Two incubation experiments were conducted under controlled moisture and temperature conditions to determine the effects of soil amendment treatments based on pruning waste biochar and oyster shell, on N2O and CO2 emissions from an orchard soil. In experiment 1, four treatments were tested including, control (CK), pruning waste biochar at 2% (B2%), at 10% (B10%), and oyster shell (OS), mixed wit...
Land application of coalbed natural gas (CBNG) co-produced water is a popular management option within northwestern Powder River Basin (PRB) of Wyoming. This study evaluated the impacts of land application of CBNG waters on soil chemical properties at five sites. Soil samples were collected from different depths (0-5, 5-15, 15-30, 30-60, 60-90, and 90-120 cm) from sites that were irrigated with...
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