نتایج جستجو برای: terrestrial ecotoxicity
تعداد نتایج: 36224 فیلتر نتایج به سال:
This study gave a review of some of the existing life cycle assessment (LCA) methods focusing on ecotoxicity, and made assessments of the ecotoxic impact of pesticide use in an example Swedish winter wheat field from a 2005 inventory and an example Brazilian soybean production field. Pesticides are used worldwide within agriculture and are under constant development aiming to increase the contr...
In this paper, we describe the design and implementation of a prototype software video production switcher, vps, that improves the quality of the content of MBone broadcasts. vps is modeled after the broadcast television in-dustry's studio production switcher. It provides special eeects processing to incorporate audience discussions, add titles and other information, and integrate stored videos...
To provide public service broadcasting on digital satellite, digital terrestrial and digital cable the BBC has been working in partnership with other UK broadcasters to develop widescreen digital television services ready for launch on DSAT and DTT in 1998 and subsequently on DCABLE. As the BBC is both a National and a regional broadcaster, the complexity and economics of distributing new servi...
OBJECTIVES Tricalcium phosphate and calcium hydrogenorthophosphate are high production volume chemicals, mainly used as foodstuff additives, pharmaceuticals, lubricants, synthetic resin, and disinfectants. Phosphate has the potential to cause increased algal growth leading to eutrophication in the aquatic environment. However, there is no adequate information available on risk assessment or acu...
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