نتایج جستجو برای: over exploitation of underground water

تعداد نتایج: 21265553  

Journal: :تحقیقات نظام سلامت 0
قاسم رجایی دانشجوی کارشناسی ارشد، گروه محیط زیست، دانشکده کشاورزی، دانشگاه بیرجند، بیرجند، ایران. محمد هادی مهدی نژاد استادیار، عضو مرکز تحقیقات بهداشت محیط، دانشکده پیراپزشکی و بهداشت، دانشگاه علوم پزشکی گلستان، گرگان، ایران سمانه حصاری مطلق دانشجوی کارشناسی ارشد، گروه محیط زیست، دانشکده کشاورزی، دانشگاه بیرجند، بیرجند، ایران

background: during recent years, overpopulation, increase of wastewater, and drop in water tables has led to high concentration of salts in underground water, which is an important environmental pollutant. if concentration of salt in drinking water exceeds the limits, it will be dangerous for health. the aim of this study was to measure physical and chemical parameters in drinking water of rura...

Journal: :desert 2013
m. a. taleghani f. talabakhshi

the use of temporary runoff and underground dried-up water courses has been implemented by managers in recentyears to compensate for water shortages in arid and semi-arid regions. one way to use this water is to set up anunderground sandy dam in front of such water courses; selecting a suitable water course is the most important issue ofsuch a purpose. in the present research, this matter was i...

Journal: :Remote Sensing 2022

Beijing is a major city suffering from land subsidence due to long-term over-exploitation of groundwater. The South-to-North Water Diversion Project (SNWDP), however, has had significant impact on the structure water consumption since end 2014, and it changing status in Beijing. In this study, we employed Persistent Scatterers Synthetic Aperture Radar Interferometric (PS-InSAR) investigate deca...

Journal: :Computer Physics Communications 2009
V. A. Kudryavtsev

The paper describes two Monte Carlo codes dedicated to muon simulations: MUSIC (MUon SImulation Code) and MUSUN (MUon Simulations UNderground). MUSIC is a package for muon transport through matter. It is particularly useful for propagating muons through large thickness of rock or water, for instance from the surface down to underground/underwater laboratory. MUSUN is designed to use the results...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم پایه 1392

a novel and ultra low cost isfet electrode and measurement system was designed for isfet application and detection of hydronium, hydrazinium and potassium ions. also, a measuring setup containing appropriate circuits, suitable analyzer (advantech board), de noise reduction elements, cooling system and pc was used for controlling the isfet electrode and various characteristic measurements. the t...

Journal: :جغرافیا و توسعه ناحیه ای 0

dashte-mashhad reservoir provides the water supply needed for irrigating 120 acres of agricultural lands and also the soft water for people living in mashhad, chenaran, golbahar and a number of villages in the region. the deep wells of the region have been using the water stored in this reservoir since 1350 in a rate which exceeds that of water being imported to it, hence the decrement of the w...

    The water crisis in arid and semi-arid regions is a limiting factor for human activities and sustainable agricultural development. One of the new solutions in this field is the construction of underground dams. Underground dams compared to conventional dams that store river water in open reservoirs; block the subsurface flow of water in the cross-section of the river and store it under the ...

B Salmanian, R Ebrahimzadeh, S.R. Aghili, Z Yousefi,

Background and purpose: One of the most prominent concerns for the water consumers is pathogenic microorganism contamination. Wells and underground water resources are the main resources of drinking water in Sari city, Iran. The main objectives of the research project were to explore the distribution and frequency of mycoflora in wells and underground water resources of the city and their conta...

2000
M. E. Contadakis G. Asteriadis

The recent results of the research for earthquake precursory phenomena on the underground water level and temperature at the area Pieria of northern Greece are presented. The analysis of our observations in relation to the local microseismicity indicate that underground water level variations may be considered as precursory phenomena connected to the local microseismic activity in the area of P...

2010
Lotfi A. Zadeh

Shaft sinking is one of the main parts in underground mine planning. Shaft has various applications in underground mines e.g. minerals exiting flow, gases entrance or exit way, stope developments for exploitation etc. Considering that this section requires an abundance of expenses, management always following the election is the way that both terms have the technical considerations, economic co...

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