نتایج جستجو برای: wells and subterranean

تعداد نتایج: 16831525  

Background & aims: All around the world, underground water resources are a major part of supplying drinking water due to high quality, easy access, low cost and no need for complicated treatment. On the other hand, lack of proper management can transfer chemical pollutants through industrial and agricultural effluents. In this study, the chemical quality of rural drinking water supplies in Neys...

Journal: :Zootaxa 2015
Michel Perreau Arnaud Faille

Ptomaphaminus granophilus n. sp. from Vietnam is described and illustrated. The special subterranean biotope of this species, deep interstices in a granitic blockfield, is emphasized.

Journal: :journal of petroleum science and technology 0
liu jun school of civil engineering and architecture, southwest petroleum university, chengdu 610500, china wang wei school of civil engineering and architecture, southwest petroleum university, chengdu 610500, china zhang jian zhong drilling technology research institute of jidong oil field company, hebei, 063000, china xiao guo hua drilling technology research institute of jidong oil field company, hebei, 063000, china

according to the temperature distribution of water injection well-bore in highly deviated wells under different conditions and unstable temperature field heat conduction principles, a true three-dimensional model was established to analyze the law of variation on temperature of highly deviated wells during the water injection process, and to analyze the factors that influence the water injectio...

Journal: :اقتصاد و توسعه کشاورزی 0
غزالی غزالی اسماعیلی اسماعیلی

abstract irregular extraction from agricultural wells around parishan lake, moreover fall of groundwater surface and water salty, would affect the level of lake water and move lake water into wells. in this study we have evaluated the externalities of extraction from agricultural wells around the lake. therefore feedback effect is considered between agricultural activity around the lake and lev...

ژورنال: سلامت و محیط زیست 2019

Background and Objective: Scaling and corrosion both are destructive to materials (usually metals) in water supply systems. A dataset (from 2002 to 2013) of groundwater resources (including springs, qanats, deep wells and semi-deep wells) were examined for water tendency to corrosion or scaling in rural regions of Kashan, a city in Isfahan, central Iran. Materials and Methods: Water quality pa...

Journal: :journal of crop protection 2012
alireza rahimzadeh marziyeh rashid aziz sheikhi garjan bahram naseri

subterranean termites are one of the most important pests of buildings, historic monuments and agricultural crops in some parts of iran. using entomopathogenic fungi as microbial insecticides is usually a part of biological control and insect pest management. the pathogenicity of entomopathogenic fungus, metarhizium anisopliae (metschnikoff) sorokin (demi 001) isolated from rhynchophorus ferrug...

2007
Aaron Christopher Morris Scott Thayer James Kuffner M. Bernardine Dias Steven LaValle

This thesis identifies operational uncertainty as a significant problem affecting reliable robot performance in real environments. Operational uncertainty represents ambiguity in a robot’s self-perceived state during the execution of a task. This ambiguity is introduced into a robotic system through events such as unanticipated environmental disturbances, failing hardware and software built upo...

2002
Frédéric Hervant David Renault

of fasting are experienced by numerous subterranean (i.e. hypogean) aquatic organisms, as many groundwater ecosystems are characterized yearly by severely limited food supplies due to lack of autotrophic production and sporadic allochthonous input (Poulson, 1964; Hüppop, 1985; Hervant et al., 1997). Even in highly productive hypogean biotopes, food resources may be extremely patchy (Malard and ...

Journal: :Geobiology 2017
J T Lennon D Nguyễn-Thùy T M Phạm A Drobniak P H Tạ N Ð Phạm T Streil K D Webster A Schimmelmann

Sources and sinks of methane (CH4 ) are critical for understanding global biogeochemical cycles and their role in climate change. A growing number of studies have reported that CH4 concentrations in cave ecosystems are depleted, leading to the notion that these subterranean environments may act as sinks for atmospheric CH4 . Recently, it was hypothesized that this CH4 depletion may be caused by...

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