the main function of rural areas in the third world is the agricultural function which is crucially important because of its great effects on employment, moderating income and poverty, food security and self-efficacy. this article studies the role of agriculture (as an independent variable) in rural development (related variable) of miyankangi district in sistan. the method of the study was des...

hydraulic jump on adverse stilling basin is an unstable phenomenon which causes some complexities in controlling of the   jump. this paper considers the stability of free hydraulic jump on adverse stilling basins from a theoretical point of view. a minimum value of upstream froude number is needed to produce the free hydraulic jump on adverse stilling basins which was presented by a theoretical...

The Weather Research and Forecasting model is used to perform large-eddy simulations of thermally driven cross-basin winds in idealized, closed basins. A spatially and temporally varying heat flux is prescribed at the surface as a function of slope inclination and orientation to produce a horizontal temperature gradient across the basin. The thermal asymmetry leads to the formation of a closed ...

A case study of the Sacramento Basin is undertaken to examine problems of planning for the impacts of climate change on water resources utilizing output from general circulation climate models. This work provides a sensitivity analysis linking climate, stream ̄ow, and planning decisions. Water resource planners want reliable time series of stream ̄ow in the basin. Sacramento basin hydrological mo...

since 1999, many cases of crimean-congo hemorrhagic fever have been reported from different parts of iran. this study intended to define cchf seroprevalence, incidence rates, and the most important risks in sistan- baluchestan province, iran. using cluster sampling with probability proportional to size, 310 subjects were selected from various districts of zahedan and zabol in the northern part ...