Showing 1 - 10 of 322
This study presents changes in the concentrations of nitrogen and phosphorus in two streams in Western Antarctica ….2% for ammonium-nitrogen. Such inferred declines in N and P concentrations are considered to reflect reduced deposition on …
Persistent link: https://www.econbiz.de/10010534186
<Para ID="Par1">During dry years, such as 2003 and the early summer of 2011, the Netherlands faces water shortages, salt intrusion, navigation limitations and problems with availability of cooling water for power plants. Considering the changing climate, the frequency of these problems is expected to increase....</para>
Persistent link: https://www.econbiz.de/10011151802
Since 2000 six standardised biennial public surveys of the state of the New Zealand environment have been undertaken. A fresh water case study was included in the 2010 postal survey and in an electronic survey. Desirable futures for New Zealand's fresh water resources, sources of damage to...
Persistent link: https://www.econbiz.de/10009324290
Rivers are essential, environmental circulatory systems. They are also polyvalent repositories for religious and cultural meanings. This essay wades into the murky waters of the Jordan River and charts its shape from sociopolitical, environmental, and religious perspectives. Hovering in the...
Persistent link: https://www.econbiz.de/10010846209
The Solar Cyclone has been introduced as a means of extracting fresh water from Earth's atmosphere. The conceptual device operates in the fashion of a Solar Chimney; it is composed of a greenhouse for collecting and storing solar energy as heat, with a central chimney that channels an updraft of...
Persistent link: https://www.econbiz.de/10010807448
Based on the fact that water can be collected from fog under favorable topographical and atmospheric conditions. The small water droplets present in the fog precipitate when they come in contact with solid objects. The frequent fogs that occur in the southwestern region of Kingdom of Saudi...
Persistent link: https://www.econbiz.de/10010998072
Due to increasing oil prices and climate change concerns, biodiesel has gained attention as an alternative energy source. Biodiesel derived from microalgae is a potentially renewable and carbon–neutral alternative to petroleum fuels. One of the most important decisions in obtaining oil from...
Persistent link: https://www.econbiz.de/10011040389
This work reports an innovative design of tubular solar still with a rectangular basin for water desalination with flowing water and air over the cover. The daily distillate output of the system is increased by lowering the temperature of water flowing over it (top cover cooling arrangement)....
Persistent link: https://www.econbiz.de/10011040996
Desalination of water has been one of the most important technological work undertaken in many countries, in particular Middle East. For this purpose, solar energy is the attractive familiar way in producing such fresh water where the cost of other energy is continuously increased. This paper...
Persistent link: https://www.econbiz.de/10011046221
An exergy analysis has been conducted to show the effect of a small fan on the exergy efficiency in a pyramid-shaped solar still. The tests were carried out in Mashhad (36° 36′ N), for two solar still systems. One of them was equipped with a small fan (active system), to enhance the...
Persistent link: https://www.econbiz.de/10011052988