نتایج جستجو برای: erosion rate
تعداد نتایج: 987131 فیلتر نتایج به سال:
We report erosion rates determined from in situ produced cosmogenic Be across a spectrum of Australian climatic zones, from the soil-mantled SE Australian escarpment through semi-arid bedrock ranges of southern and central Australia, to soil-mantled ridges at a monsoonal tropical site near the Arnhem escarpment. Climate has a major effect on the balance between erosion and transport and also on...
This paper focuses on constraining the erosion rate in the area of the Allchar Sb-As-Tl-Au deposit (Macedonia). It contains the largest known reserves of lorandite (TlAsS2), which is essential for the LORanditeEXperiment (LOREX), aimed at determining the long-term solar neutrino flux. Because the erosion history of the Allchar area is crucial for the success of LOREX, we applied terrestrial in ...
The shape of soil-mantled hillslopes is typically attributed to erosion rate and the transport efficiency various processes that contribute soil creep. While climate generally hypothesized have an important influence on creep rates, a lack uniformity in measurement has been obstacle evaluating controls this landscape parameter. We addressed problem by compiling data set which calculated using s...
If other factors are held constant erosion, soil loss rate is directly proportional to the amount of rain erosion. Various measures have been proposed so far in the world, depending on geographic location, scale, local conditions and the type of measurement are different. A review of studies conducted worldwide and the limited rain gauge equipped, modified Fournier index is calculated based on ...
چکیده مقدمه: اختلالات مفصل گیجگاهی-فکی(tmd) به طور کلاسیک توسط گروهی از علایم کلینیکی شامل درد و صداهای مفصلی و محدودیت یا انحراف هنگام باز کردن دهان مشخص می شوند. هدف از این مطالعه بررسی ارتباط یافته های کلینیکی با تغییرات استخوانی در تصاویر cbct بیماران مبتلا به اختلالات مفصل گیجگاهی فکی (tmd)می باشد. مواد و روش کار: از میان مراجعه کنندگان به بخش پروتز دانشکده دندان پزشکی مشهد ، تعداد 41 ب...
Dental erosion is a prevalent condition that occurs worldwide. It is the result of exposure of the enamel and dentin to nonbacterial acids of extrinsic and intrinsic origin, whereby mineral loss occurs from the surface of the tooth. The most frequently affected areas are the palatal surface of maxillary incisors and the occlusal surface of the mandibular first molars in adolescents. Characteris...
Results of an experimental investigation are reported, conducted to study the stress-strain behavior of a soil having undergone different amounts of internal erosion. The soil used is gap-graded and cohesionless comprising silt, sand and gravel. Internal erosion tests and subsequent triaxial tests are performed in a specially designed apparatus having modified perforated end platens and a drain...
Chemical weathering rates and erosion rates of granitic till in northern Sweden have been estimated. The present-day chemical weathering rate is compared with the long-term average weathering rate since the last deglaciation approximately 8,700 years ago. Also, the present-day release rates of major and trace elements due to chemical weathering are compared with the mobility of these elements i...
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