منابع مشابه
Analysis and Design of a Simple Surge Tank (RESEARCH NOTE)
In a hydroelectric power plant or in a pumping station in order to avoid sudden large increase of pressure due to instantaneous valve closure sometimes a surge tank is installed. The height of surge tank is designed by the highest possible water level during the operation. The theoretical treatment of oscillation in a surge tank is difficult because of the non-linearity of friction term in the ...
متن کاملMicrowave Pretreatment of Fresh Water Hyacinth (Eichhornia Crassipes) in Batch Anaerobic Digestion Tank (RESEARCH NOTE)
The purpose of the research was to study the effect of microwave power inpretreatment of fresh waterhyacinth on biogas production. The variations of microwave power levels are 240; 400; 560 and 800 W. The variations of microwave heating time are 5; 7 and 9 min. The unpretreated fresh water hyacinth are used as control. The result of research showed that the microwave pretreatment of fresh water...
متن کاملA note on "Re-examining the law of iterated expectations for Choquet decision makers"
This note completes the main result of [Zimper A., (2010) Re-examining the law of iterated expectations for Choquet decision makers. Theory and decision, DOI 10.1007/s11238-010-9221-8], by showing that additional conditions are needed in order the law of iterated expectations to hold true for Choquet decision makers. Due to the comonotonic additivity of Choquet expectations, the equation E[f, ν...
متن کاملA note to researchers: Communicating science to policy makers and practitioners.
This paper provides commentary from a policy maker's perspective to researchers seeking to inform public policy and practice. It points to a number of issues that limit the usefulness of researchers' work. These issues are grouped into the two broad areas: format and forum. Format issues include the manner in which research reports are presented, their often equivocal nature, and their failure ...
متن کاملField note phytovolatilization of oxygenated gasoline-impacted groundwater at an underground storage tank site via conifers.
A stand of five conifers (Pinus sp.) bordering a gasoline service station was studied to estimate the methyl tert-butyl ether (MTBE) emission rate from gasoline-impacted groundwater. Groundwater was impacted with gasoline oxygenates MTBE and tert-butyl alcohol (TBA) at combined concentrations exceeding 200,000 microg/L. Condensate from trees was collected in sealed environmental chambers and an...
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ژورنال
عنوان ژورنال: Nature
سال: 1983
ISSN: 0028-0836,1476-4687
DOI: 10.1038/302206c0