Alpha-HCH and beta-HCH are constituents of technical HCH, which is regulated by at least two international agreements.
来自世界卫生组织目前的数据(WHO)的建议,甲型流感(猪流感)大流行是不可避免和不可阻挡的。
Current data from World Health Organization(WHO) suggests that the influenza A/H1N1(swine flu) pandemic is now inevitable and unstoppable.
减少和取消甲型六氯环己烷和乙型六氯环己烷与那些旨在减少有毒化学品排放的可持续发展计划是一致的。
Reduction and elimination of alpha-HCH and beta-HCH are consistent with sustainable development plans that seek to reduce emissions of toxic chemicals.
In 2005, SARS and Avian Influenza A were included as notifiable occupational diseases under Schedule 2 to the Occupational Safety and Health Ordinance(Cap. 509).
Hoekstra et al.(2002)found that bowhead whales exhibit a reversal in their blubber alpha-/beta-HCH ratios on their migration route between the Bering to the Beaufort Sea.
A local source of alpha-HCH was the usage of technical HCH by indigenous human populations in the Russian North against nuisance insects parasitizing domesticated reindeer(Li et al., 2004).
Taking into account the half-life of alpha and beta endosulfan, which is followed by the halflife of endosulfan sulfate, together these values exceed the criterion of six months' persistence in soil.
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