نتایج جستجو برای: erosion gurpi formation
تعداد نتایج: 555514 فیلتر نتایج به سال:
The intramontane basins of the southern Rocky Mountains, USA, have undergone up to 1.5 km of erosion from the middle Miocene to the present. Here I explore the hypothesis that this erosion could have been caused primarily by an increase in the intensity of snowmelt fl ooding. In the middle Miocene, snowmelt runoff was limited to the highest elevations (>3 km) and hence impacted only a small fra...
The so-called lattice Boltzmann method is used to implement a numerical model for erosion, transport and deposition of sediment due to the action of a streaming uid. This approach is applied to describe the formation of a scour under a submarine pipe. Both static and dynamic properties of the process are well reproduced by our computer simulations.
Cholecystogastric fistula is a rare complication of chronic cholecystitis or long-standing cholelithiasis. It results from the gradual erosion of the approximated, chronically inflamed wall of the gall bladder and stomach with fistulous tract formation. The present case describes the direct visualization of a cholecystogastric fistula by computed tomography in a patient without prior biliary sy...
generally, the evaluation and assessment critical condition of rill formation are useful for a better understanding of soil erosion processes. the inherence characteristics of soils, which have much dynamic variations on the hill-slopes and are affected by rill formation, are the soil critical shear stress and soil erodibility factors. this study aims to assess experimental rill incision thresh...
Prior studies have proposed tectonic and climatic mechanisms to explain surface uplift throughout the Bhutan Himalaya. While the resulting enigmatic, low-relief landscapes, elevated above deeply incised canyons, are a popular setting to test ideas of interacting tectonic and climatic forces, when and why these landscapes formed is still debated. We test the idea that these landscapes were creat...
PURPOSE The aim of this study was to investigate the effects of gastroeophageal reflux disease (GERD) on: (1) erosion; (2) caries formation; (3) salivary function; and (4) salivary microbiological counts. METHODS Thirty-eight GERD patients with a mean age of 6 1/2 years and 42 healthy children of the same age and gender and social background comprised the study group. All subjects answered a ...
A flume study was conducted using a soil, yard waste compost, and an erosion control compost to investigate the response to concentrated flow and determine if the shear stress model could be used to describe the response. Yard waste compost (YWC) and the bare Cecil soil (CS) control responded to concentrated laboratory runoff similarly in rill formation, and the shear stress model was useful in...
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