نتایج جستجو برای: rill construction

تعداد نتایج: 208944  

2001
G. H. Merten

mass. The energy for these processes is provided, basically, by the weight of the mixture of water and sediment According to theory, the rate of detachment of soil particles in and the downslope gradient of the flow. Studies related rills is reduced as a first-order function of the amount of sediment to the mechanics of rill erosion have shown that rates load in the flow. The first objective of...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده علوم 1377

this thesis deals essentially (but not from all aspects) with the extension of the notion of semigroup compactification and the construction of a general theory of semitopological nonaffine (affine) transformation semigroup compactifications. it determines those compactification which are universal with respect to some algebric or topological properties. as an application of the theory, it is i...

Journal: :Water 2022

The main purpose of this article is to give a general idea the scientific activity that was carried out starting from 2000s on basis data collected in plots installed at Sparacia experimental station for soil erosion measurement Sicily, South Italy. paper includes presentation site, description methods and procedures measuring processes both available literature applied (sediment sampling water...

Journal: :Sustainability 2023

The erodibility and erosion resistance of Quaternary sediments play a pivotal role in both the hydrologic processes soil cut slopes. To investigate runoff sediment yield slopes along Pai-Mo road, we performed indoor simulated rainfall experiments under 50° steep slope high intensity (120 mm/h), based on area’s climatic characteristics properties. included various rock fragment contents (30%, 40...

Journal: :Revista Brasileira de Ciência do Solo 2013

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده علوم انسانی 1390

introduction le pronom (complément) est un nom grammatical qui remplace un nom ou une phrase ou bien une locution nominale. les pronoms (compléments) sont de divers genres dont les plus importants sont: les pronoms sujets, d objets, possessifs; réfléchis, dénominatifs, relatifs, et interrogatifs parmi lesquels les pronoms sujets; d objets; possessifs et réfléchis sont considérés les pronoms...

Journal: :desert 2013
m. nasri s. feiznia m. jafari h. ahmadi

the problems of land degradation and soil loss are among the major problems of watersheds in iran. for erosion andsediment estimation one can use statistical and empirical methods. for doing this, land unit map and the map of effectivefactors should be prepared. for erosion and sediment estimation one can use statistical and empirical methods. however,these empirical methods are usually time co...

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