نتایج جستجو برای: natural and environmental factors
تعداد نتایج: 17026039 فیلتر نتایج به سال:
The article examines the issues of possibility studying erosion and its control. study proved that development soil is based on forming impact natural anthropogenic factors. degree potential danger prevention, taking into account preservation environmental situation in foothills Upper Shirvan example Shamakhi district Republic Azerbaijan, were studied. main tasks determination amount eroded ero...
Lawsone a natural pigment present in the henna leaves has been used as a skin and hair dye since 1400 BC. The concentration of this natural compound in leaves varies from place to place depending upon many of the environmental factors and the highest quantity reported so far is about 1% of the dry mass. Heretofore, it has been reported that natural colored extracts and isolate from Henna leaves...
ecological destruction in human-dominated landscapes has significant impacts on environment sustainability internationally. landscape planning can play a role in mitigating the effects of human-related activities. one element of landscape planning involves the analysis of the biological, spatial and social arrangement of areas in an urban environment and identifying characteristics that are und...
Cooling is one of the most influential factors to provide thermal comfort. The inactive cooling systems for residential environments can help us consume non-renewable natural resources. The aim of this paper is to investigate the performance of solar windproof and chimney, saving in energy consumption, and reducing environmental problems. This research is implemented with a review of the Rasool...
چکیده رقابت پذیری معیاری کلیدی برای ارزیابی درجه موفقیت کشورها،صنایع و بنگاهها در میدان های رقابتی سیاسی،اقتصادی و نجاری به حساب می آید.بدین معنی که هر کشور،صنعت یا بنگاهی که از توان رقابتی بالایی در بازارهای رقابتی برخوردار باشد،می توان گفت که از رقابت پذیری بالاتری برخوردار می باشد.در تحقیقات مختلف، رقابت پذیری در سه سطح ملی،صنعت و بنگاه مورد توجه قرار گرفته که در این میان سطح بنگاه از د...
to study the effect of some varying treatments including such environmental factors as temperature, moisture, and light as well as plant growth regulators on breaking dormancy of datura stramonium l. seeds, several experiments were conducted. seeds of datura stramonium l. possess full dormancy immediately following harvest. storing the seeds for 3 months (15 dec. 2005 to 15 march 2006) at room ...
The main purpose of this paper has been to discuss the effects of psychological stress and other environmental factors on incidence of diseases. We were specifically concerned with stress that increased susceptibility of uninfected hosts when exposed to infection. If such stresses also reduced resources, fecundity and/or survivorship, there was a reduction in the host carrying capacity. In addi...
Background: After natural disasters the likelihood of outbreak of infectious diseases especially water and foodborne diseases, increases due to population displacement, increasing risk factors, environmental changes, changing living conditions and increasing vulnerability to pathogens. This research was conducted with the aim of designing a model for controlling the outbreak of water and foodbo...
12 In vibration-based structural health monitoring, changes in the natural frequency of a structure 13 are used to identify changes in the structural conditions due to damage and deterioration. 14 However, natural frequency values also vary with changes in environmental factors such as 15 temperature and wind. Therefore, it is important to differentiate between the effects due to 16 environment...
the goal of this research is the evaluation of some of the effective environmental attractions on khorasan razavi’s sports tourism development. the research statistical population include of all in charge expert and professors in field of sport and tourism as 120 persons. this research is past-event descriptive that had been performed based on field method. sampling had been performed as catego...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید