Assessment of the hazards of polybrominated biphenyls.

Assessment of the hazards of polybrominated biphenyls.

During their peak use period, PBBs represented under 1% of the total sales of fire retardant chemicals, and very probably would have escaped intensive study if they had not been mixed accidentally with animal feed preparations. Instead, international attention was drawn to PBBs by the state-supervised killing of over 35,000 cattle which had been contaminated with PBBs. Interestingly, low doses ...

Polybrominated biphenyls 74 Hazard assessment of Polybrominated biphenyls

assessment of the efficiency of s.p.g.c refineries using network dea

data envelopment analysis (dea) is a powerful tool for measuring relative efficiency of organizational units referred to as decision making units (dmus). in most cases dmus have network structures with internal linking activities. traditional dea models, however, consider dmus as black boxes with no regard to their linking activities and therefore do not provide decision makers with the reasons...

Carcinogenicity of polychlorinated biphenyls and polybrominated biphenyls.

Monograph Working Group Members V J Cogliano (USA)–Chair; K Aronson, H Tryphonas (Canada); Y L Guo (Taiwan, China); M Machala (Czech Republic); E C Bonefeld-Jørgensen, K Vorkamp (Denmark) J P Cravedi, B Le Bizec, J F Narbonne (France); H Esch (Germany); P Cocco, F Merletti (Italy); R Vermeulen (unable to attend; Netherlands); A Agudo (Spain); N Johansson (Sweden); H Fiedler, N Hopf (Switzerland...

the impact of training on second language writing assessment: a case of raters’ biasedness

چکیده هدف اول این تحقیق بررسی تأثیر آموزش مصحح بر آموزش گیرندگان براساس پایایی نمره های آنها در پنج بخش شامل محتوا ، سازمان ، لغت ، زبان و مکانیک بود. هدف دوم این بود که بدانیم آیا تفاوتهای بین آموزشی گیرندگان زن و مرد در پایایی نمرات آنها وجود دارد. برای بررسی این موارد ، ما 90 دانشجو در سطح میانه (متوسط) که از طریق تست تعیین سطح شده بودند انتخاب شدند. بعد از آنها خواستیم که درباره دو موضوع ا...