نتایج جستجو برای: decreasing changes of climatic elements such as daily precipitation

تعداد نتایج: 21546894  

Journal: :جغرافیا و مخاطرات محیطی 0
زهرا حجازی زاده دکتر سید محمد حسینی علی رضا کربلایی درئی

1. introduction climatic change is one of the most important challenges human beings have confronted with in recent centuries due to its severe effects on water resources, agriculture, energy, tourism and even human bioclimatic. developing strategies, making decisions with awareness about water consumption in different parts in the future, and available water resources management require climat...

Journal: :پژوهش های جغرافیای طبیعی 0
فیروز مجرد دانشیار گروه جغرافیا، دانشگاه رازی کرمانشاه، ایران بهمن فرهادی استادیار گروه مهندسی آب، دانشگاه رازی کرمانشاه، ایران راضیه خیری کارشناسی ارشد اقلیم شناسی، گروه جغرافیا، دانشگاه رازی کرمانشاه، ایران

introductionthe use of climatic and natural variables in the regulation of agricultural activities has a particular importance. of the important characteristics of climate are the onset and retreat dates of main rainy season which have a determining role in the agricultural activities such as seeding time, cultivation period and other agricultural programs and strategies like irrigation. iran r...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده علوم اجتماعی و اقتصادی 1389

abstract nowadays, the science of decision making has been paid to more attention due to the complexity of the problems of suppliers selection. as known, one of the efficient tools in economic and human resources development is the extension of communication networks in developing countries. so, the proper selection of suppliers of tc equipments is of concern very much. in this study, a ...

Abstract In the history of humanity, human always has suffered all difficulties with effort to reach to comfort and well-being until the human provides a way to achieve the comfort. In the viewpoint of climate four elements have significant role in formation of human comfort and discomfort conditions that according to the climatic conditions in different areas, the type and effect of these el...

Rainfall prediction plays an important role in flood management and flood alert. With rainfall information, it is possible to predict the occurrence of floods in a given area and take the necessary measures. Due to the fact that the three months of January, February and March are most floods and most precipitation is occurring this quarter, this study aimed to investigate the factors affecting ...

ژورنال: سلامت و محیط زیست 2020

Background and Objective: This study aimed to evaluate the correlation between climatic parameters and air pollution with cardiovascular disease and its associated death during 2014 in Mashhad by time series model. Materials and Methods: Patient data (including outpatient and hospitalization) and cardiovascular mortality were obtained from the emergency medical center and Ferdowsi organization...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه مازندران - دانشکده علوم انسانی 1390

iv abstract this study examined the linguistic behaviors of two iranian efl teachers each of them teaching learners of two similar proficiency levels, a beginner level and an intermediate level, to investigate the relationship between the learners proficiency levels and the amounts and purposes for l1 use by the two teachers. the study was carried out to investigate whether there were differe...

Journal: :desert 2015
fatemeh rabbani hossein mohammadi ghasem azizi daruosh mazaheri

climate change has direct and indirect consequences on crop production and food security. agriculture and cropproduction is one of the factors which depend on the weather conditions and it provides the human requirements inmany aspects. the objective of this study is to assess the impacts of future climatic change on irrigated rice yieldusing the ceres-rice model in the southern coast of caspia...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه گیلان - دانشکده فنی 1392

due to lack of knowledge management system in the organization of technical and vocational university of iran (tvuni) and losing good employees because of retirement and substitution causes huge amount of costs to replace the similar expertise. there is no any suitable system in the tvuni to store, to document, and to distribute knowledge. based on the university’s features such as it has diffe...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1388

abstract sensitive and precise voltammetric methods for the determination of trace amounts of furaldehydes, mainly as furfural (f) and 5-hydroxymethyl-2-furaldehyde (hmf), in waste waters and other matrices is described. determination of total furaldehyde at < ?g g-1 levels in alkaline buffered aqueous media was individually investigated. by the use of ordinary swv and adsorptive square wave ...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید