نتایج جستجو برای: 60 cm depths total n

تعداد نتایج: 2004638  

Journal: :Asian journal of forestry 2022

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...

Journal: :محیط شناسی 0
فریدا ایرجی آسیابادی دکتری علوم محیط زیست، دانشکدۀ کشاورزی و منابع طبیعی، دانشگاه آزاد اسلامی واحد اصفهان (خوراسگان)، اصفهان، ایران سید احمد میرباقری استاد، دانشکدۀ مهندسی عمران، دانشگاه صنعتی خواجه نصیر طوسی، تهران، ایران علی اصغر بسالت پور استادیار، دانشکده کشاورزی، دانشگاه ولی عصر (عج) رفسنجان، رفسنجان، ایران

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...

Journal: :iranian journal of medical physics 0
m. j. tahmasebi birgani associate professor, medical physics dept., ahwaz university of medical sciences, ahwaz, iran. m. ghorbani ph.d. student in medical physics, mashhad university of medical sciences, mashhad, iran.

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 ...

M Sobhani Shahmirzadi

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...

Journal: :Agriculture 2023

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...

Journal: :Journal of the American Mosquito Control Association 1996
L L Fry-O'Brien M S Mulla

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...

2011
Ali Fares Farhat Abbas Domingos Maria Alan Mair

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...

Journal: :Frontiers in Environmental Science 2021

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...

2018
Aung Zaw Oo Shigeto Sudo Khin Thuzar Win Akira Shibata Takeru Gonai

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...

Journal: :Journal of environmental quality 2005
Girisha K Ganjegunte George F Vance Lyle A King

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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