نتایج جستجو برای: water reservoirs

تعداد نتایج: 564589  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - پژوهشکده مهندسی فرایند 1395

abstract: mineral scaling in oil and gas production equipment is one of the most important problem that occurs while water injection and it has been recognized to be a major operational problem. the incompatibility between injected and formation waters may result in inorganic scale precipitation in the equipment and reservoir and then reduction of oil production rate and water injection rate. ...

2011
Maarten S. Krol Pieter R. van Oel José Carlos de Araújo

Semi-arid river basins often rely on reservoirs for water supply. Small reservoirs may impact on large-scale water availability both by enhancing availability in a distributed sense and by subtracting water for large downstream user communities, e.g. served by large reservoirs. Both of these impacts of small reservoirs are subject to climate change. Using a case-study on North-East Brazil, this...

2014
Qing Gu Jinsong Deng Ke Wang Yi Lin Jun Li Muye Gan Ligang Ma Yang Hong

Various reservoirs have been serving as the most important drinking water sources in Zhejiang Province, China, due to the uneven distribution of precipitation and severe river pollution. Unfortunately, rapid urbanization and industrialization have been continuously challenging the water quality of the drinking-water reservoirs. The identification and assessment of potential impacts is indispens...

2003
Javier Paredes

Abstract This paper presents a spill-minimizing operating policy for refill of reservoirs in parallel for water supply considering water quality criteria. First a Linear Programming form of the New York City Rule is developed. Next, this formulation is extended to consider stratified water quality in the reservoirs and a requirement of water quality for the downstream demand. Both approaches ar...

Journal: :environmental health engineering and management 0
mohammad fahiminia environmental health engineering, research center for environmental pollutants, qom university of medical sciences, qom, iran hossein jafari mansoorian environmental health engineering research center, department of environmental health, kerman university of medical sciences, kerman, iran mohsen ansari environmental health engineering, school of public health, qom university of medical sciences, qom, iran ali saifour mofrad environmental health engineering, school of public health, qom university of medical sciences, qom, iran gharib majidi environmental health engineering, school of public health, qom university of medical sciences, qom, iran reza ansari tadi environmental health engineering, urban water & wastewater company of qom province, qom, iran

background: this study aimed to evaluated trends for iron and manganese concentrations in wells, reservoirs, and water distribution networks in qom city during the summer of 2012. methods: this was a cross-sectional study. the studied scopes consisted of groundwater (60 wells), reservoirs (10 tanks), and water distribution network (33 points). one sample was taken from each source monthly. stat...

Hossein Jafari Mansoorian, Ali Saifour Mofrad, Gharib Majidi, Maryam Sadat Tabatabai Majd, Mohammad Fahiminia, Mohsen Ansari, Reza Ansari Tadi,

Background: This study aimed to evaluated trends for iron and manganese concentrations in wells, reservoirs, and water distribution networks in Qom city during the summer of 2012. Methods: This was a cross-sectional study. The studied scopes consisted of groundwater (60 wells), reservoirs (10 tanks), and water distribution network (33 points). One sample was taken from each source monthly. Stat...

2012
Fan Zhang Yue-Hui She Lu-Jun Chai Ibrahim M. Banat Xiao-Tao Zhang Fu-Chang Shu Zheng-Liang Wang Long-Jiang Yu Du-Jie Hou

Water-flooded oil reservoirs have specific ecological environments due to continual water injection and oil production and water recycling. Using 16S rRNA gene clone library analysis, the microbial communities present in injected waters and produced waters from four typical water-flooded oil reservoirs with different in situ temperatures of 25 °C, 40 °C, 55 °C and 70 °C were examined. The resul...

2017
Gang Wen Xuan Li Xiaopeng Qiu Ya Cheng Yuankui Sun Tinglin Huang

Since the 1950s, the pollution of reservoirs has become serious. The water quality in reservoirs is deteriorating due to population growth, industrialization, and urbanization. In order to clarify the characteristics of water quality change in reservoirs, in-situ monitoring of water quality and phytoplankton were conducted in Jinpen Reservoir, Shibianyu Reservoir, Zhoucun Reservoir, and Zhelin ...

Journal: :Environmental science and pollution research international 2012
Jun Yang Xiaoqing Yu Lemian Liu Wenjing Zhang Peiyong Guo

BACKGROUND, AIM, AND SCOPE Fujian reservoirs in southeast China are important water resources for economic and social sustainable development, although few have been studied previously. In recent years, growing population and increasing demands for water shifted the focus of many reservoirs from flood control and irrigation water to drinking water. However, most of them showed a rapid increase ...

Journal: :ecopersia 0
mohammad reza dahmardeh ghaleno ph.d. candidate, department of watershed management, gorgan university of agricultural sciences and natural resources, gorgan, iran amir sadoddin associate professor, department of watershed management, gorgan university of agricultural sciences and natural resources, gorgan, iran vahedberdi sheikh associate professor, department of watershed management, gorgan university of agricultural sciences and natural resources, gorgan, iran mahmood sabouhi sabouni professor, department of agricultural economics, ferdowsi university of mashhad, iran

the optimal allocation of the chahnimeh water resources among different sectors, viz. domestic, agricultural and environmental consumptions, was determined using the goal programming method in gams, based on the present condition in the area. results showed an increase of 15.4, 44.5 and 230% in allocation of water to domestic, agriculture and environment sectors, respectively, in this method as...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید