نتایج جستجو برای: genetic erosion

تعداد نتایج: 644003  

Journal: :مرتع و آبخیزداری 0
محمد اکبریان مربی دانشگاه هرمزگان، ایران سیّد حسن کابلی دانش آموخته دکتری مرتعداری، دانشکده منابع طبیعی، دانشگاه تهران، ایران. نوازاله مرادی مربی دانشگاه هرمزگان، ایران.

determining the relative sensitivity of land to erosion and its factors, could be the basis of soil conservation programs. the aim of this study is to compare water and wind erosion functions in land degradation of dasht-e-jeihoon using psiac and irifr.ea models and the source studying of aeolian sediments in geomorphologic facieses as homogeneous units. the results indicate that in dasht-e-jei...

2012
Masoud Nasri Ali Gholami Ali Najafi

In recent years, most of the regions in the world are exposed to degradation and erosion caused by increasing population and over use of land resources. The understanding of the most important factors on soil erosion and sediment yield are the main keys for decision making and planning. In this study, the sediment yield and soil erosion were estimated and the priority of different soil erosion ...

Journal: :Annals of the rheumatic diseases 1989
J C Buckland-Wright G S Clarke S R Walker

Microfocal radiography has been used to evaluate the relation between erosion number and erosion area in the hands and wrists of 51 patients with early to moderately advanced rheumatoid arthritis. The hands of these patients showed different patterns of erosion progression, in terms of the relation between changes in number and area, and included those showing a decrease in one or both of the e...

2007
P. R. Robichaud

After wildfires, land managers must assess the potential for increased flooding, erosion, and sedimentation, and the increased threat these effects may pose to people, structures, and valued resources. A Web-based Erosion Risk Management Tool (ERMiT) has been developed to predict surface erosion from postfire hillslopes, and to evaluate the potential effectiveness of various erosion mitigation ...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 1993
J A Tamada R Langer

Degradable polymers are beginning to play an increasing role as materials for environmental and medical applications. Understanding factors that control erosion, such as bond cleavage and the dissolution and diffusion of degradation products, will be critical to the future development of these materials. Erosion kinetics, photomicroscopy, and infrared spectroscopy were used to understand the er...

Journal: :مرتع و آبخیزداری 0
جلال زندی دانشجوی دکتری آبخیزداری دانشگاه علوم کشاورزی و منابع طبیعی ساری محمود حبیب نژاد روشن استاد گروه آبخیزداری دانشگاه علوم کشاورزی و منابع طبیعی ساری کریم سلیمانی استاد مرکز rs و gis دانشکدة منابع طبیعی ساری

soil erosion is a serious environmental problem in vazroud watershed, which is located in the centre of the mazandaran province, iran. unfortunately, vazroud watershed like most iran watersheds don’t have recorded data and erosion and sedimentation gages to research, monitor and model soil erosion at large watershed. in order to assess the soil erosion risk, soil erosion modeling at the watersh...

2013
Nie Xiaojun Zhang Jianhui Su Zhengan

Dynamics of soil organic carbon (SOC) are associated with soil erosion, yet there is a shortage of research concerning the relationship between soil erosion, SOC, and especially microbial biomass carbon (MBC). In this paper, we selected two typical slope landscapes including gentle and steep slopes from the Sichuan Basin, China, and used the (137)Cs technique to determine the effects of water e...

2017
Samsuzana Abd Aziz Brian L. Steward Amy L. Kaleita Manoj Karkee

The slope length and steepness (LS) factor is one of the factors in the Revised Universal Soil Loss Equation (RUSLE) needed to estimate average annual erosion rate. The LS factor is often derived from digital elevation models (DEM). DEM errors and uncertainty could affect LS factor estimation and consequently erosion rate estimation. However, DEM uncertainties are not always accounted for, and ...

2017
Nadia Vazirpanah Fleurieke H Verhagen Anna Rothova Tom O A R Missotten Mirjam van Velthoven Anneke I Den Hollander Carel B Hoyng Timothy R D J Radstake Jasper C A Broen Jonas J W Kuiper

PURPOSE Birdshot Uveitis (BU) is an archetypical chronic inflammatory eye disease, with poor visual prognosis, that provides an excellent model for studying chronic inflammation. BU typically affects patients in the fifth decade of life. This suggests that it may represent an age-related chronic inflammatory disease, which has been linked to increased erosion of telomere length of leukocytes. ...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید