Depth of frost penetration is one of the main indices in agriculture, civil and transportation engineering. Soil temperature is a function of several factors including: topography, solar radiation, air temperature, moisture content and other physical properties of soil such as thermal capacity, coefficient of heat conductivity, and specific heat. The main objective of the present paper is to de...

introduction one of the factors that affect the climate of arid and semi-arid areas is dust storm. numerical models are new methods for evaluation of dust storms which can also be used for forecasting dust storms. weather patterns that lead to dust outbreaks can be simulated using computer models that support a wide range of simulations related to the long-range transport, dispersion, and depos...

[1] A neural network inversion scheme including first guess information has been developed to retrieve surface temperature Ts, along with atmospheric water vapor, cloud liquid water, and surface emissivities over land from a combined analysis of Special Sensor Microwave/Imager (SSM/I) and International Satellite Cloud Climatology Project (ISCCP) data. In the absence of routine in situ surface s...

BACKGROUND Although magnetic resonance imaging (MRI) is an important imaging modality for pre-operative staging and surgical planning of rectal cancer, to date there has been little investigation on the completeness and overall quality of MRI reports. This is important because optimal patient care depends on the quality of the MRI report and clear communication of these reports to treating phys...

Four synoptic regimes were identified as accompanying the widespread dust in central and eastern Saudi Arabia. The widespread cases of dust were classified based on the value and spread of the aerosol index data from the TOMS aerosol index (TOMS AI) satellite over the area of interest. The synoptic regimes of these dust cases were recognized using the Empirical Orthogonal Function (EOF) analysi...

camel is a resistant species to drought and cold weather and produces milk and meat in harshest environmental condition. camel population in iran has been decreasing during last decades, and genetic studies are quite necessary for considering the conservation and productivity of this species. in this study growth hormone gene influencing growth, milk production and reproduction was considered. ...

BACKGROUND Yazd province which is the host of local and foreign immigrants may be faced with contacting malaria. Plasmodium falciparum malaria remains a major cause of mortality throughout in the tropical regions of the world. Pthophysiologic mechanisms of anemia in malaria is such as direct invasion of Red cells, anemia of chronic disease hypersplenism, Hemophagocytic syndrome and erythrophago...

Wind changes, and particularly wind changes that are associated with dry cold fronts, have profound effects on fire behaviour and fire-fighting operations (e.g. Cheney et al. 2001). Huang and Mills (2006b) (hereafter Part 1) have reported on the first stage of a larger scale project that aims to improve the understanding and prediction of wind changes in Australia. In Part 1 a method of objecti...

introduction thunderstorms of the most important, most abundant of the most severe weather hazard that each year, in addition to large quantities of crops and infrastructure development, causing human casualties are also around the globe. between 1953 and 1957 the financial losses caused by the hurricanes in america has over 3.6 million dollars (changnon;2003,1231).storms of varying intensities...