Background: The phenomenon of dust is a serious environmental problem in dry and semi dry regions. It has a destructive effect for the residents of such regions. Over two-thirds of Iran is in areas of dry and semi-dry climate conditions. Methods: In this research, dust fall measurements were taken in 41 stations across Yazd city using a marble dust collector (MDCO) located in diffe...

while the application of optical and photonic technologies in the communications, computing, medicine and industrial manufacturing has been growing rapidly, the miniaturization of these technologies has been slow due to the limitation on the diffraction. however, the developments of nanoscale components and guiding methods are continuing with a rapid pace. since waveguiding is a fundamental iss...

banberz, banbor, and sabziabad neighborhoods are three residential districts on the peripheryof ilam city, and are facing a lot of problems namely social, economic, and physical, particularly in housing sectorincluding low quality, poor housing, limited-quantity housing. in order to assess the sustainability of housing, 75indicators and to rank districts, spss software (exploratory factor analy...

confront to natural disasters and its managing by using of the most efficient means have always been subjected to deliberation, investigation and examine from various aspect. but all the time; a comprehensive and locative analysis on the spur of the moment and place is essential act that must be taken to do.in this field geographic information system is capable through integrating information i...

the relationship between initial population density of rice white tip nematode (aphelenchoides besseyi) and yield was examined on oryzae sativa cv. alikazemi. experiments were conducted in greenhouse, micro-plot and field conditions. seinhorst’s model was used to describe the relationship between nematode population density and crop yield. the parameters of the model, minimum yield (m), constan...

This paper describes the work of the International Research Institute for Climate and Society (IRI) and its partners towards the development of climate services for the health sector in Africa; integrating research, operational applications and capacity building alongside policy development and advocacy. It follows the evolution of IRI’s health work from an initial focus on the use of seasonal ...

the objective of this study was to evaluate the potential gain in accuracy of predictions by imputing genotypes from a low-density marker panel (6640 marker with 10 replicates) to a medium-density marker panel in a simulated population of jersey cattle using fimpute software and also to evaluate the reliability of genomic estimate of breeding values (gebv) for milk yield (h2=0.40) and fertility...

While previous empirical analysis of deforestation focused on population, this paper builds from a model of land use which suggests many determinants of deforestation in the Brazilian Amazon. I derive a deforestation equation from this model and test a number of those factors using county-level data for the period 1978]1988. The data include a satellite deforestation measure which allows improv...