نتایج جستجو برای: usually without secure underground and surface water supply

تعداد نتایج: 17100190  

Journal: :The New phytologist 2008
Alexandru M F Tomescu

Nonphotosynthetic cells of higher plants depend on the supply of a carbon substrate, usually sucrose, for cellular metabolism. Typically this sucrose is synthesized in leaves from the products of photosynthesis. Because of the lack of light below ground, roots do not generally photosynthesize (we note the exception of certain mangrove species and members of the Orchidaceae), although many roots...

2015
Harpreet Kaur Gitanjali Sharma

Effluent from the textile industry contains toxic compounds. These compounds contaminate the surface water, thereby making it unfit for irrigation and drinking. Since farmers use water from the rivers for agricultural purposes and the residents of the town, use both the surface and underground water from the same area as potable water, it is quite unsafe to discharge this effluent into water bo...

پرهیزکاری, ابوذر, مظفری, محمدمهدی ,

According to the importance of this issue in present study first using of time series data of years 2006-2012 and RCM-PRECIS simulation model the impacts of greenhouse gases emission on climatic variables temperature and precipitation under different scenarios in watersheds of Qazvin province was investigated. Then, in order to assess the impacts of climatic variables temperature and precipitat...

Journal: :Environmental Health Perspectives 2002
Scott Fields

Genetic exchange by recombination, or reassortment of genomic segments, has been shown to be an important process in RNA virus evolution, resulting often in important phenotypic changes affecting host range and virulence. However, data from numerous systems indicate that reassortant or recombinant genotypes could be selected against in virus populations and suggest that there is coadaptation am...

2005
Vinayak Deshpande Leroy B. Schwarz Mikhail J. Atallah Marina Blanton Keith B. Frikken Jiangtao Li

Although the benefits of information sharing between supply-chain partners are well known, many companies are averse to share their “private” information due to fear of adverse impact of information leakage. This paper uses techniques from Secure Multiparty Computation (SMC) to develop “secure protocols” for the CPFR r © † (Collaborative Planning, Forecasting, and Replenishment) business proces...

The uncontrolled spread of illegal artisanal small-scale gold mining (ASM), popularly termed “galamsey” in Ghana, has, for decades, impacted adversely upon water bodies, soils, wildlife, human health, and safety. A lack of understanding, however, of the types of galamsey, their operational attributes, and their relative impacts has unfortunately hindered an effective policy response despite num...

Journal: :desert 0
i. islami ph.d. student, gorgan university of agricultural sciences and natural resources, gorgan, iran m. ghorbani assistant prof., faculty of natural resources, university of tehran, karaj, iran m. jafari shalamzari ph.d. student, gorgan university of agricultural sciences and natural resources, gorgan, iran

arid and desert lands in terms of specific environmental characteristics such as low annual precipitation,sequential droughts, huge drop in ground water levels or the like, have always faced strict limitations in waterresources. in the shadow of these characteristics and many other factors, water price index (wpi) is significantlyaffected. this study set out with the aim of identifying and dete...

2013
Sun Jichao Wang Guangqian

Studies about sediment erosion were mainly concentrated on the river channel sediment, the terrestrial sediment, and the underground sediment. The transport process of underground sediment is studied in the paper. The concept of the flush potential sediment is founded. The transport equation with stable saturated seepage is set up, and the relations between the flush potential sediment and wate...

بوداغی , هاجر , دهقانی, محمدهادی, محمدی, محمودعلی , محوی, امیرحسین , نظم‌آرا, شاهرخ , یونسیان, مسعود ,

Background and purpose: Fertilizer is one of the sources of heavy metal contamination in soil and underground water. The purpose of this study was to investigate the concentration of cadmium, lead and arsenic in paddy soil and underground water and its relationship with chemical fertilizer in Ghaemshahr City. Materials and methods: During the spring and summer in 2010, samples of soil were ran...

Journal: :The New phytologist 2008
Lisa Wingate

Nonphotosynthetic cells of higher plants depend on the supply of a carbon substrate, usually sucrose, for cellular metabolism. Typically this sucrose is synthesized in leaves from the products of photosynthesis. Because of the lack of light below ground, roots do not generally photosynthesize (we note the exception of certain mangrove species and members of the Orchidaceae), although many roots...

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