نتایج جستجو برای: water leakage

تعداد نتایج: 578911  

Journal: :تولید گیاهان زراعی 0
علی چهل گردی دانشجوی کارشناسی ارشد گروه زراعت و اصلاح نباتات دانشگاه شهید باهنرکرمان مهری صفاری دانشیارگروه زراعت و اصلاح نباتات دانشگاه شهید باهنر کرمان روح الله عبدالشاهی استادیارگروه زراعت و اصلاح نباتات دانشگاه شهید باهنر کرمان

drought stress is one of the most important problems of agriculture and an important factor of plant product reduction. application of absorbent materials can help usage of sporadic rain fall and cause more maintenance of water storage. in order to study the effect of super absorbent polymer, potassium sulfate and manure under drought condition and favorable irrigation on some traits of foxtail...

2017
Zi-Wu Guo Jun-Jing Hu Shuang-Lin Chen Ying-Chun Li Qing-Ping Yang Han-Jiang Cai

Water and nitrogen are two of the most important factors for plant growth and development. However, little is known about effects of N on water translocation between connected bamboo ramets. We performed experiment connected Indocalamus decorus ramets in adjacent pots with different soil water contents and three N levels. We determined antioxidase activities, concentration of osmotic adjustment...

2004
J. Donners S. S. Drijfhout A. C. Coward

[1] The leakage of water from three Agulhas rings has been studied in a high resolution global ocean model using a Lagrangian particle following technique. A bowl shaped ring boundary that reaches a radius of 140 km and a depth of 800 m separates regions of fast and slow leakage. The dilution of Agulhas ring water generally increases with depth, but a shallow secondary circulation enhances leak...

2015
Gregory O’Mullan M. Elias Dueker Kale Clauson Qiang Yang Kelsey Umemoto Natalia Zakharova Juerg Matter Martin Stute Taro Takahashi David Goldberg

In addition to efforts aimed at reducing anthropogenic production of greenhouse gases, geological storage of CO2 is being explored as a strategy to reduce atmospheric greenhouse gas emission and mitigate climate change. Previous studies of the deep subsurface in North America have not fully considered the potential negative effects of CO2 leakage into shallow drinking water aquifers, especially...

تهرانی‌فر , علی, نعمتی, سید حسین, امامی , حجت , ولی زاده قلعه بیگ, اکرم ,

Water stress is a global crisis and is considered a serious threat for agriculture. Superabsorbent polymers, through improving soil physical conditions, prevent moisture stress in arid and semi-arid areas. To evaluate the effects of a natural superabsorbent (bentonite) and a synthetic superabsorbent (A200) on growth of lettuce, a factorial experiment in a completely randomized design with four ...

There is a pressure tunnel as the type of structures, which is mainly used in the hydroelectric power industry and in order to design and construct these structures, there are many engineering challenges. One of these problems is the leakage around the tunnel and, consequently, erosion caused by excessive water pressure, and it will lead to instability and the destruction of pressure tunnels. T...

Journal: :International Journal of Engineering & Technology 2018

2002
H Ramos C Reis C Ferreira C Falcão D Covas

Despite the growing concern of water companies throughout the world to have available water resources, which is strongly related to leakage control is not always properly considered within water management companies. Nowadays, the continuous monitoring of water distribution systems is a prerequisite towards the rapid and efficient detection of any abnormal situation. Within European Union prior...

Journal: :health scope 0
hosein kamani health promotion research center, zahedan university of medical sciences, ir iran; department of environmental health engineering, school of public health, tehran university of medical sciences, tehran, ir iran mohammad malakootian environmental health research center and environmental health engineering department, school of public health, kerman university of medical sciences, ir iran mohammad hoseini department of environmental health engineering, school of public health, tehran university of medical sciences, tehran, ir iran; department of environmental health engineering, school of public health, tehran university of medical sciences, tehran, ir iran. tel: +9821-22909114, fax: +9821-88954914 jalil jaafari department of environmental health engineering, school of public health, tehran university of medical sciences, tehran, ir iran

background the non-revenue water refers to a difference between the volume of water entering the system and billed authorized consumption. objectives the main purpose of this study is to determine the volume of non-revenue water in order to recognize the factors influencing water losses so that the information gathered can used in non-revenue water reduction management. materials and methods ka...

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