نتایج جستجو برای: the linear parameters drainage density

تعداد نتایج: 16217820  

Today, due to climate change, natural hazards and how to deal with them are among the most important concerns of researchers in environmental planning and crisis management. The purpose of this study is the assessment of the potential flood risk in Sarbaz drainage basin. For this purpose, the databases including elevation, slope, geological characteristics, soil characteristics, precipitation, ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم 1392

gol-e-gohar iron ore mine of sirjan in southern part of iran is a large open pit that operates below the groundwater table and during mining operation, dewatering is required to prevent operation processes from flooding. current operation is going on by digging wells in or out of the pit and pumping to prevent flooding. as a result of the former dewatering operation a vast deep cone of depressi...

The present study investigates the performance and relative accuracy of four lattice-hole theory based equations of state in modeling and correlating the liquid density of pure refrigerants. Following the gathering of a database of 5740 experimental liquid density datapoints of 36 pure refrigerants belonging to five different categories including CFCs, HCFCs, PFCs, HFCs and HFEs, ranging from 6...

2007
Wei Luo Tomasz Stepinski Yi Qi

This paper demonstrates a feasibility of automated drainage density mapping on regional scales and in high resolution, using remotely sensed elevation data. Such maps offer affordable means of surveying large regions for variability in spatially extended features, which themselves are difficult to sense remotely, but are expressed by the drainage density. We show that the proposed mapping metho...

Journal: :journal of biomedical physics and engineering 0
s. sina radiation research center, shiraz university, shiraz, iran. r. faghihi radiation research center, shiraz university, shiraz, iran a. s. meigooni nuclear engineering department, school of mechanical engineering, shiraz university, shiraz, iran.

background: the artificial neural networks (anns) are useful in solving nonlinear processes, without the need for mathematical models of the parameters. since the relationship between the ct numbers and material compositions is not linear, ann can be used for obtaining tissue density and composition. objective: the aim of this study is to utilize ann for determination of the composition and mas...

Journal: :iranian journal of oil & gas science and technology 2013
misagh delalat riyaz kharrat

the gas-assisted gravity drainage (gagd) process is designed and practiced based on gravitydrainage idea and uses the advantage of density difference between injected co2 and reservoir oil.in this work, one of iran western oilfields was selected as a case study and a sector model wassimulated based on its rock and fluid properties. the pressure of co2 gas injection was close to themmp of the oi...

Journal: :Journal of Korea Water Resources Association 2008

1998
Gregory E. Tucker Rafael L. Bras

Catchment morphology and drainage density are strongly influenced by hillslope processes. The consequences of several different hillslope process laws are explored in a series of experiments with a numerical model of drainage basin evolution. Five different models are considered , including a simple diffusive-advective process transition, a runoff-generation threshold, an erosion threshold, and...

پایان نامه :دانشگاه تربیت معلم - تهران - دانشکده زبانهای خارجی 1386

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