نتایج جستجو برای: water supply networks

تعداد نتایج: 1102651  

2015
Jillian M. Deines Xiao Liu Jianguo Liu

Urban centres increasingly have difficulties meeting water needs within their hydrologic basins. To sustain urban water supply, cities and water source regions have increased telecouplings (socio-economic and environmental interactions over distances). To analyse these complex interactions, we apply the new telecoupling framework to the water-stressed megacity of Beijing’s imported water supply...

2009
Patrick A. Ray Paul H. Kirshen Richard M. Vogel

When addressing urban water problems, it is no longer adequate to consider issues of water supply, demand, disposal, and reuse independently. Innovative water management strategies and opportunities for water reuse can only be properly evaluated in the context of their interactions with the broader water system. An integrated linear deterministic optimization model is applied to Beirut, Lebanon...

Journal: :Australian and New Zealand journal of public health 2007
W Kerry Mummery Mitchell Duncan Ryan Kift

OBJECTIVE To describe public opinion relating to the fluoridation of drinking water in a sample of the Queensland population. METHOD Data were collected by means of a computer-assisted telephone interview survey from a sample of the Queensland population. Descriptive statistics and logistical regression were used to examine associations between variables. RESULTS Seventy per cent of the tot...

Journal: :The Journal of tropical medicine and hygiene 1989
B A Hoque S R Huttly K M Aziz M Y Patwary R G Feachem

As part of the evaluation of a water supply, sanitation and hygiene education project in rural Bangladesh, the consumption of water from the improved supplies was estimated from an observational study. Women volunteers observed and recorded all water collection activities of each group of households using a handpump over a 2-day period. Data from questionnaire surveys on household characteristi...

2008

Access to services and infrastructure is generally available nationwide in Germany (drinking water supply, sewage treatment, mail, telecommunications, transport). The quality of these services, however, differs from region to region. One field which needs improvement is sewage treatment where, for economic reasons, the number of decentralised systems is growing. The call for nationwide access t...

Journal: :چغندرقند 0
علی سلیمانی دانشیارگروه زراعت و اصلاح نباتات- دانشگاه آزاد اسلامی، واحد خوراسگان

hargraves-samani method is one of the methods for calculating plant evapotranspiration that needs minimum meteorological data. in order to evaluate et-hs model in determining sugar beet crop water demand in isfahan, an experiment was conducted at research field of department of agriculture, khorasgan branch, islamic azad university, isfahan, iranin 2005. the study was based a randomized complet...

Journal: :civil engineering infrastructures journal 0
rajesh gupta b.e. (civil), m. tech. (env.), ph.d. mohd abbas haider abdy sayyed b.e. (civil), m. tech (env.)

a water distribution network is subjected to various abnormal conditions such as pipe breaks, pump failures, excessive demands etc. in the design period. under such conditions, the network may not be able to meet required demands at desired pressures, and becomes deficient. traditional network analysis assumes nodal demands to be satisfied and available nodal pressures are calculated. however, ...

Journal: :Water Research 2021

• Using regional brackish water resources to create supply networks. Variations in groundwater salinity over time were modeled at a high spatial resolution. The lowest cost network is determined while mixing of with different salinities considered. Small variations demand cause large differences the optimal costs. WaterROUTE model links modeling long term planning. Water users can reduce their ...

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