the problems of shortages and quality deterioration of water, have led to an increased interest in the reuse of treated grey water in many parts of the world. this study examined the suitability of locally available materials (beach sand, oyster shells, and charcoal) to treat grey water samples collected weekly from three halls of residence (unity hall, africa hall, and independence hall) on kw...

used to be previously. At the present time cholera is a problem of the villages. Our present methods of dealing with cholera are of the suppressive rather than preventive type. Any organization for the control of the disease is put into action after an epidemic of cholera has already started; this can never be successful. On the other hand if we can ensure the safety of drinking water in the vi...

Plant aquaporins play an important role in water uptake and movement-an aquaporin that opens and closes a gate that regulates water movement in and out of cells. Some plant aquaporins also play an important role in response to water stress. Since their discovery, advancing knowledge of their structures and properties led to an understanding of the basic features of the water transport mechanism...

Application generators have been demonstrated as a successful approach to achieving software reuse and typically yields higher productivity gains than methods such as component-based reuse. Despite their advantages, industrial software developers are reluctant to adopt these methods due to the lack of tools for constructing generators. This paper presents a framework for the development of appl...

in order to improve irrigation water productivity (wp) at rice production, a field experiment was conducted at shahid fozveh research station (esfahan region) during 2001-2003. experiment was arranged in a split plot design (rcbd) with three replications. the treatments were: three levels of irrigation managements including i1: permanent flooding under 3.5cm water during growth period, i2:perma...

background and aims. as a result of poor quality of public water supply in many countries, people have recently turned to bottled water consumption, the fluoride content of which is not generally consistent among different brands. this study sought to measure the fluoride concentration of public water supply in comparison with commercial brands of mineral bottled water available in tehran, iran...

the formation of renal and urinary calculi is not due to a single cause but occurs as a multifactor entity, by which some of them still are unknown. three theories of stones formation including nucleation, stone matrix and inhibition of crystallization do not accuse water hardness as a main cause of the formation of urinary calculi 120 patients suffering from renal and urinary calculi and the s...

background: nitrate and nitrite compounds are considered as groundwater’s contamination factors, which in recent years, their densities have been growing in these resources. this study was conducted aiming to measure nitrate and nitrite density in drinking water wells in villages around the industrial estate, city of orumieh, and to compare them to the approved standards. methods: this was a de...

conclusions the results of this study show that it is possible to remove nitrate, and its intermediates from waste water. regarding the desirability of the process, the field scale study is proposed. results the results showed that by applying electric current of 0.14 a for 120 minutes, the nitrate content would reduce down to 97%. the obtained r2 for the nitrate removal model was higher than 0...

abstract in present study, it has been studied to oprimize culture pattern in water consumption reduction and increase in income by use of collected data from kazeroon agriculture organization and forign commercial statistical annals and use of linear planning model due to simplicity and lts application, and to apply in water resources management. the purpose of this study had been to edit one ...