نتایج جستجو برای: water networks

تعداد نتایج: 970103  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده مدیریت و اقتصاد 1391

abstract nowadays, industries cannot play a crucial role in national and international competitions. the tourism industry is no exception. tourism industry development as the most important economic sector and income generation is one of the key challenges of economic development in the world. therefore, countries were successful that take advantage of the capabilities of tourism sector using ...

Journal: :International Journal of Molecular Sciences 2020

Journal: :محیط شناسی 0
محمدرضا جلیلی قاضی زاده استادیار دانشکده عمران، آب و محیط زیست، دانشگاه شهید بهشتی ضیاالدین ایدی دانشجوی دکتری سازه های هیدرولیکی، دانشگاه رازی

extended abstract abstract pressure management is an effective method for water demand management. for evaluation of the effects of pressure changes on leakage level of water networks, the favad equation is usually used. however, in this equation, exponent of pressure parameter (n) needs to be determined. for estimation of n, either some information about the leak opening is necessary or networ...

Journal: :آب و خاک 0
سید نادر شتاب بوشهری سید فرهاد موسوی سید بهزاد شتاب بوشهری

abstract one of the problems in design of irrigation structures is sedimentation control in the inlet to the irrigation networks. water quality for agriculture requires that the sediments be controlled and reduced to the permissible limit at their entrance point to the turnouts and irrigation networks. this is possible by constructing a sedimentation basin. the bigger the basin, the best the re...

Journal: :Journal of Complex Networks 2022

Abstract Liquid water, besides being fundamental for life on Earth, has long fascinated scientists due to several anomalies. Different hypotheses have been put forward explain these peculiarities. The most accredited one foresees the presence in supercooled region of two phases at different densities: low-density liquid phase and high-density phase. In our previous work [Faccio et al. (2022), J...

ژورنال: مهندسی دریا 2012
نعمتی, مریم, کرمی خانیکی, علی,

Prediction of wave height is of great importance in marine and coastal engineering. In this study, the performances of artificial neural networks (feed forward with back propagation algorithm) for online significant wave heights prediction, in Persian Gulf, were investigated. The data set used in this study comprises wave and wind data gathered from shallow water location in Persian Gulf. Curre...

Journal: :تحقیقات اقتصاد و توسعه کشاورزی ایران 0
علی اصغر شاهرودی محمد چیذری

the purpose of this study was to investigate and analyze factors influencing farmers’ participation in irrigation networks management, with an approach to compare two groups of farmers (one in irrigation networks with wua (water users' association), and the other in networks lacking wua). the methodological approach was a descriptive-correlational and causal-comparative study of the survey...

Journal: :Public health 2006
Maged Mohammed Yassin Salem S Abu Amr Husam M Al-Najar

OBJECTIVE To assess the contamination level of total and faecal coliforms in water wells and distribution networks, and their association with human health in Gaza Governorate, Gaza Strip. METHODS Data were obtained from the Palestinian Ministry of Health on contamination of total and faecal coliforms in water wells and distribution networks, and on the incidence of water-related diseases in ...

Journal: :Water Resources Research 2017

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