نتایج جستجو برای: slope aspect

تعداد نتایج: 149090  

Journal: :Sustainability 2021

Topography-induced microclimate differences determine the local spatial variation of soil characteristics as topographic factors may play most essential role in changing climatic pattern. The aim this study was to investigate distribution organic carbon (SOC) with respect slope gradient and aspect, quantify their influence on SOC within different land use/cover classes. area is Region Niš Serbi...

Journal: :Journal of hand surgery 1993
J P Van Geertruyden D P Goldschmidt

50 consecutive patients with injuries due to skiing on an artificial ski slope were seen in our emergency department over a 16-month period; 76% of these involved the hand or wrist. 52.5% of hand lesions were fractures and only one-third of the first ray injuries were sprains of the ulnar aspect of the MP joint. These data significantly differ from those known for skiing on snow.

1998
Tetsuhisa Mido Kunihiro Asada

| In this study, we have developed a two dimensional skin e ect simulator by using the split ber model, that can treat the skin e ect as inductive phenomenon of metal wires. Using this simulator, we have calculated propagation delay as a function of wiring aspect ratio with considering the skin e ect. We estimate propagation delay of both step and slope input and we point out the necessity of c...

Journal: :Physical review letters 2009
Masanori Kato Akira Endo Shingo Katsumoto Yasuhiro Iye

The Aharonov-Bohm effect in a small array of antidots with a large aspect ratio is investigated in the quantum Hall regime. The evolution with temperature of the Aharonov-Bohm oscillations in the magnetic field versus gate voltage (B-V_{g}) plane reveals the temperature dependence of the screening. The self-consistently screened potential of the compressible band surrounding an antidot is obser...

Extended abstract 1- Introduction Gully erosion is one of the most important sources of sediment in the watersheds and a common phenomenon in semi-arid climate that affects vast areas with different morphological, soil and climatic conditions. This type of erosion is very dangerous due to the transfer of fertile soil horizons, and the reduction of water holding capacity also is a factor for s...

2017
H. B. Wang J. M. Li B. Zhou Y. Zhou Z. Q. Yuan Y. P. Chen

Background: In the last few decades, the development of Geographical Information Systems (GIS) technology has provided a method for the evaluation of landslide susceptibility and hazard. Slope units were found to be appropriate for the fundamental morphological elements in landslide susceptibility evaluation. Results: Following the DEM construction in a loess area susceptible to landslides, the...

Journal: :مرتع و آبخیزداری 0
حمید رضا مرادی دانشکده منابع طبیعی دانشگاه تربیت مدرس، دکتری جغرافیای طبیعی مریم دشتی مرویلی دانشگاه تربیت مدرس علیرضا ایلدرمی دانشگاه ملایر

abstract aim of this research is landslide hazard zoning in syahdare watershed using logistic regression. therefore, outset landslide points recognized using air photography and extensive field studies. then distribution of landslide map was makes. then each effective element on landslide occurred for example slope, aspect, elevation, litho logy, land use, distance of road, distance of drainage...

Journal: :محیط زیست طبیعی 0
سیدجلیل علوی استادیار دانشکده منابع طبیعی و علوم دریایی دانشگاه تربیت مدرس، ایران قوام الدین زاهدی امیری دانشیار گروه جنگلداری دانشکده منابع طبیعی دانشگاه تهران، ایران رامین رحمانی دانشیار گروه جنگلداری دانشکده منابع طبیعی دانشگاه علوم کشاورزی و منابع طبیعی گرگان، ایران محمدرضا مروی مهاجر استاد گروه جنگلداری دانشکده منابع طبیعی دانشگاه تهران، ایران بارت مویس استاد دانشگاه کاتولیک لوون، بلژیک جعفر فتحی کارشناس مسئول جنگل آموزشی و پژوهشی خیرود، دانشکده منابع طبیعی دانشگاه تهران، ایران

the present research was performed in patom, namkhaneh, gorazbon, chelir and baharbon districts in kheyrud forest. due to existence of forest typology map and extension of study area, this study was confined to beech dominated forests. a stratified sampling method based on landform is used to locate 1000 m2 circular sample plots. the number of fagus orientalis lipsky trees ? 7.5 cm in dbh withi...

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