configuration of urban land use arrangement system, how to divide and how to use urban lands are advantages of environmental, economic, social, politic and rightly forces. with extension of urbanization and development of urban and regional planning, this concept is more widely hold a special place in the form of projects such as: land preparation, framework planning, general and comprehensive,...

Background: To assess the toxicity of environmental pollutants in fish, there are different physiological parameters including histology. This study aimed to investigate the effect of prebiotic dietary supplement on fish immune response after exposure to toxicant. Methods: The study was conducted in the Gorgan University of Agricultural and Natural Resources aquaculture Laboratory in 2017. Com...

Tarii structures where charges depend on resource usage allow network operators to fairly recover costs from their customers. The notion of eeective bandwidth is an important mathematical abstraction to the complex problem of quantifying resource usage. We consider usage-based pricing schemes which are based on some bound of the eeective bandwidth and involve two measurements: the duration of a...

Development and usage of online social networking web sites are growing rapidly. Millions members of these web sites publicly articulate mutual "friendship" relations and share user-created contents, such as photos, videos, files, and blogs. The advances in web designing technology and fast growing usage of online resources prompted web designers to improve features and architectures of social ...

results the mean age and work experience of workers were 31.39 ± 5.6 and 4.35 ± 2.5 years, respectively. among the exposed-to-noise personnel, 7.35% used hpds constantly; 75% used hpds for only short periods of time (less than four hours) and 17.65% did not make use of them at all. regarding the sound intensity and the level of noise reduction of hpds, among the 112 workers who used such device...

In oil industries, water injection into oil reservoirs for pressure maintenance, oil displacement, and oil recovery is a common technique. Formation damage during water injection is a major problem in this process. Formation damage from the incompatibility of formation water (FW) and injection water (IW) causes a reduction in the permeability around the injection wells. Therefore, it is necessa...

Dengue virus spreader Aedes mosquitoes are now present globally in tropical and sub-tropical regions, and spread to more temperate areas during the summer. Mosquitoes Aedes albopictus Skuse and Aedes aegypti (Linnaeus) have adapted to breed around human dwellings and prefer to lay eggs in clean water, and since the virus can be passed from adult to egg, the dengue virus is guaranteed to survive...