resources biologists should be involved in planning control measures whenever delicate ecosystems could be impacted by mosquito control practices. the underlying philosophy of mosquito control is based on the fact that the greatest control impact on mosquito populations will occur when they are concentrated...
different cycles between the solar field and the heat energy conversion,directly or via high capacity heat storage, making it possible to ensure a continuous supply of heat even when there is no sunlight. focus on... jarysol® jarysol® is a synthetic heat transfer fluid perfectly suited for use in concentrated...
natural gas and petroleum. refining operations of natural gas and petroleum crude produce hydrogen sulfide, which also may occur naturally. hydrogen sulfide is separated from hydrocarbon gases by absorption in an aqueous solution of alkaline solvent such as monoethanol amine. hydrogen sulfide is concentrated...