Based on the activity level and emission factors, we estimated the provincial mercury emissions from non-coal sources during the period of 1995 ~ 2003 in China.

根据各种非燃煤大气汞排放源的活动水平和排放因子，估算了1995 ~ 2003年中国分省非燃煤大气汞的排放量。

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Field experiments were carried out on Loess Plateau to investigate the effects of cropping on the physical and chemical properties, phosphatase activity, and N2O emission of upland soils.

通过大田试验研究了黄土地区种植作物对旱作农田土壤理化性状、磷酸酶活性以及土壤n2o排放的影响。

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The wheat planting and film mulching all increased the soil phosphatase activity and N2O emission flux, applying fertilizer could enhance the phosphatase activity.

农田种植小麦和覆膜均增加了土壤磷酸酶活性和N2O的排放。

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In one study in 2004 researchers at the University of Toronto used positron emission tomography scanning to track the brain activity of 14 depressed patients who had successfully been treated with CBT, comparing them with 13 patients who got better by taking only Paxil.

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Tuesday's emission came from the same vent as those over the last few days but there was additional activity from a new vent nearby in the now intensely deforming dome.

BBC: Mount St Helens spews out steam and ash on 5 October 2004