نتایج جستجو برای: high slope

تعداد نتایج: 2098877  

1999

B. A. DEHORITY. 1960. Effect of starch on the digestion of cellulose in vitro and in vivo by rumen microorganisms. Jour. Animal Sci. 19 (4) : 1268-1269. KAMSTRA, L. D., A. L. MOXON AND 0. G. BENTLEY. 1958. The effect of stage of maturity and lignification on the digestion of cellulose in forage plants by rumen microorganisms in vitro. Jour. Animal Sci. 17 (1) : 199-208. LE FEVRE, C. F. AND L. D...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده منابع طبیعی و علوم دریایی 1388

this research was conducted in two protect and destroy region in the middle zagros, in illam province. in order to identification of ecological species group and evaluate density of regeneration, effect of many factors such as protection, vegetation, physiographic factors, physical and chemical properties of soil in study locations were studied. to achieve these purpose number of 54 plots using...

Journal: :تحقیقات آب و خاک ایران 0
الهام درویشی دانشجوی دکتری سازه های آبی، گروه مهندسی آبیاری و آبادانی، دانشکدة مهندسی و فناوری کشاورزی، دانشگاه تهران صلاح کوچک زاده استاد گروه مهندسی آبیاری و آبادانی، دانشکدة مهندسی و فناوری کشاورزی، دانشگاه تهران جان فنتون استاد دانشگاه فنی وین، اتریش عبدالحسین هورفر استاد گروه مهندسی آبیاری و آبادانی پردیس کشاورزی و منابع طبیعی دانشگاه تهران

the assumptions considered in developing the saint-venant equations limit their application in many practical situations. the modified boussinesq equation was presented to overcome the limitation imposed by saint-venant equation due to the presence of non-hydrostatic pressure distribution and steep slope. in this paper a computational model was developed for solving the modified and the traditi...

2008
Dmitri Panov Julius Ross

We study slope stability of smooth surfaces and its connection with exceptional divisors. We show that a surface containing an exceptional divisor with arithmetic genus at least two is slope unstable for some polarisation. In the converse direction we show that slope stability of surfaces can be tested with divisors, and prove that for surfaces with non-negative Kodaira dimension any destabilis...

2008
Jordan Webster

High field Q-slope is a loss mechanism frequently encountered by superconducting radio frequency (SRF) cavities. The goal of this experiment was to identify correlations between cavity surface impurities, caused by either nitrogen gas or a thin layer of oxidized niobium, and high field Q-slope. Unfortunately, due to an unpredictable series of complications, cavity test results were not obtained...

2004
S. D. Warren M. G. Hohmann K. Auerswald H. Mitasova

Variation in the computation of slope from digital elevation data can result in significantly different slope values and can, in turn, lead to widely varying estimates of environmental phenomena such as soil erosion that are highly dependent on slope. Ten methods of computing slope from distributed elevation data, utilizing capabilities inherent in five different geographic information systems ...

نادری, حمدا... , نظمی, لیلا ,

The present study was conducted in Mollaahmad watershed of Ardabil city in 1390 to evaluate the canonical correlation between tillage erosion [slope gradient and position], and grain yield and barley yield components (Sahand cultivar) in order to determine the covariability between the two sets of variables to (1) detect simultaneously occurring patterns in the interdependencies sets of canonic...

Journal: :اکو هیدرولوژی 0
مازیار محمدی دانشجوی دکتری، گروه علوم و مهندسی آبخیزداری، دانشکدۀ منابع طبیعی، دانشگاه تربیت مدرس مقدسه فلاح کارشناس ارشد آبخیزداری، گروه مهندسی آبخیزداری، دانشکدۀ منابع طبیعی، دانشگاه علوم کشاورزی و منابع طبیعی عطااله کاویان دانشیار، گروه مهندسی آبخیزداری، دانشکدۀ منابع طبیعی، دانشگاه علوم کشاورزی و منابع طبیعی ساری لیلا غلامی استادیار، گروه مهندسی آبخیزداری، دانشکدۀ منابع طبیعی، دانشگاه علوم کشاورزی و منابع طبیعی ساری ابراهیم امیدوار استادیار، گروه مهندسی مرتع و آبخیزداری، دانشکدۀ منابع طبیعی و علوم زمین، دانشگاه کاشان

the modeling can provide a quantitative approach and consistency in the estimationsoil erosion and sediment yield by a wide range of conditions. in this study, the integration method of revised universal soil loss equation model, geographic information system and remote sensing techniques were used in order to identify the spatial distribution of soil erosion and sediment yield in the talar wat...

2010
Zhongyi Xie Daniel M. Tracy

Accurate terrain representation with appropriate preservation of important terrain characteristics, especially slope steepness is becoming more crucial and fundamental as the geographical models are getting more complex and commonly used. Based on our earlier success in Overdetermined Laplacian Partial Differential Equation (ODETLAP), which allows for compact yet accurate compression of the Dig...

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