نتایج جستجو برای: 2001 to november 22
تعداد نتایج: 10683222 فیلتر نتایج به سال:
an experiment involving erosion simulation was conducted at the soil and water con-servation research center of the university of tehran. a split-factorial plot with four replications was designed. five soil desurfacing treatments of blank, 5, 10, 15, and 20 cm of soil surface removal (e0, e5, e10, e15, and e20) were carried out, respectively. fertilizer treatments were 0, 65, and 130 kg ha-1 o...
The Scientific Committee on Food decided to review its recommendation on the acceptable daily intake of dioxins (and dioxin-like PCB), only half a year after the original recommendation was made in November 2000. In the paper of May 2001 the SCF mentioned: “The Committee is asked to consider whether there is a need to update its opinion on the risk assessment of dioxins and dioxin-like PCBs in ...
Get Smart About Antibiotics Week is November 14-20, 2016. This annual observance is intended to engage health care providers, professional societies, advocacy groups, for-profit companies, state and local health departments, the general public, the media, and others in an effort to improve antibiotic stewardship in outpatient, inpatient, nursing home, and animal health settings. During this wee...
1. KEY ISSUES Transportation noise can be regarded as a major environmental impact, particularly in residential areas. Its cost could represent close to 0.5 % of GDP in the European Union [1]. Considerable amounts of money are spent each year by the community to prevent or limit noise, through both the enforcement of regulations (emission and immission) and the use of economic instruments (char...
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