نتایج جستجو برای: depletion of water resources

تعداد نتایج: 21232585  

2010
Laurent Masson Bryce S. Richards Andrea I. Schäfer

In some areas limited water resources combined with the fast growing population are leading to a crucial situation because of the increase in water demand. Besides, an estimated one billion people are living both without access to clean drinking water or electricity. Therefore, a stand alone photovoltaic-power based hybrid membrane desalination prototype has been designed to meet this challenge...

2008
Sheetal Sekhri Jillian Berk Kaivan Munshi David Weil Nicholas Wilson Andrew Foster

The development of markets for natural resources can help to ensure that individual users appropriately internalize the opportunity cost of these resources and thus can decrease resource use. However, expansion of markets also makes it possible to sell these resources, which may lead to more rapid extraction. A simple model of markets for groundwater suggests that the latter effect dominates an...

1996
Robert L. Smathers Bradley A. King E. Patterson

Irrigated agriculture in Idaho faces a decline in the availability of water and increasing costs for that available water. The demand for recreational and environmental urban water use continues to grow. Adopting improved irrigation technology is one of the few remaining alternatives that agriculture can use to address this problem. Development of large-scale water projects to enhance water sup...

Journal: :پژوهشنامه پردازش و مدیریت اطلاعات 0
مهرخ ملکیان mahrokh malekian عضو هیئت علمی مرکز اطلاعات و مدارک علمی ایران

this project aims at collecting and cataloging the information pertaining to the research projects and documents concerning water resource. the data collected along with abstracts were entered into worksheets in compliance with us- marc bibliographic format. they were fed into the computer following the necessary validation process. so far more than 5000 documents (proceedings, research report,...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده ادبیات و زبانهای خارجی 1392

abstract i the purpose of this study was to launch a thorough investigation concerning the possibility of differing orientations to the writing proficiency construct by native and non-native english speaking teacher raters. it mainly revolved around the international english language testing system (ielts) that is widely administered and employed as a measure of general proficiency in englis...

Journal: :The Science of the total environment 2012
I Juwana N Muttil B J C Perera

In the past few decades, there have been extensive efforts on measuring sustainability. One example is the development of assessment tools based on sustainability indicators. Several individuals and organisations have suggested various indices for assessing sustainability. This paper focuses on the review of water sustainability assessment using the indicator-based approach. It discusses major ...

2016
Rodolfo Metulini Stefania Tamea Francesco Laio Massimo Riccaboni

Disentangling the relations between human migrations and water resources is relevant for food security and trade policy in water-scarce countries. It is commonly believed that human migrations are beneficial to the water endowments of origin countries for reducing the pressure on local resources. We show here that such belief is over-simplistic. We reframe the problem by considering the interna...

Journal: :Journal of environmental quality 2006
David J Lewis Michael J Singer Randy A Dahlgren Kenneth W Tate

Long-term water quality records for assessing natural variability, impact of management, and that guide regulatory processes to safeguard water resources are rare for California oak woodland rangelands. This study presents a 20-yr record (1981-2000) of nitrate-nitrogen (NO(3)-N) and suspended sediment export from a typical, grazed oak woodland watershed (103 ha) in the northern Sierra Nevada fo...

2006
B. Nilsson

Uncertainty in conceptual model structure and in environmental data is of essential interest when dealing with uncertainty in water resources management. To make quantification of uncertainty possible is it necessary to identify and characterise the uncertainty in geological and hydrogeological data. This paper discusses a range of available techniques to describe the uncertainty related to geo...

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