منابع مشابه
Developments in Solar Water Heating
Solar water heating system technology is described and the scale of the International solar water heater market is surveyed. New product developments for both direct solar water heating and solar boosted heat pump water heating are outlined. Procedures adopted by the International Standards Organisation for assessing solar water heater performance and quality are discussed.
متن کاملSolar Chimney Power Plants – Developments and Advancements
A wide range of existing power technologies can make use of the solar energy reaching Earth. Basically, all those ways can be divided into two basic categories: transformed for use elsewhere or utilized directly – direct – and involving more than one transformation to reach a usable form – indirect. The Solar Chimney Power Plant (SCPP) is part of the solar thermal group of indirect solar conver...
متن کاملNew Developments in Water Quality and IWRPM
The past thirty (30) to forty (40) years has been a period when emphasis was placed on the development of available water resources all over the world. Despite the benefits, the environmental, social and cultural impacts have had a mixture of desirable and undesirable effects. These considerations must therefore be integrated into the development process so as to make water resource use sustain...
متن کاملWater fluoridation, osteoporosis, fractures--recent developments.
BACKGROUND Optimal (1ppm) water fluoridation is seen as the most socially equitable way to prevent dental caries, however concerns about the safety of fluoridation are periodically raised. METHODS Research on effects on bone published since the 1991 National Health and Medical Research Council report on water fluoridation was reviewed. RESULTS Thirty-three studies were identified. Adverse e...
متن کاملDevelopments of power system protection and control
Synchronized wide area communication has become a mature technology, which makes the real-time interaction between the substations and the wide area protection and control system possible. However, the present protection and control system to handle this real-time data has been recognized to be deficient. This paper begins by reviewing the development history of power system protection, with sp...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nature
سال: 1919
ISSN: 0028-0836,1476-4687
DOI: 10.1038/103246a0