Quantitative structure activity relationships for carp kidney ATPase endpoint

ＩｎｔｒｏｄｕｃｔｉｏｎＭｏｓｔｏｆｎｉｔｒｏａｒｏｍａｔｉｃｓａｒｅｉｍｐｏｒｔａｎｔｅｎｖｉｒｏｎｍｅｎｔａｌｐｏｌｌｕｔａｎｔｓ.ＴｈｅｃａｒｐｉｓｔｈｅｍａｊｏｒｅｃｏｎｏｍｉｃｆｉｓｈｉｎＣｈｉｎａａｎｄｉｓｏｎｅｏｆｔｈｅｆｉｖｅｓｔａｎ?..     

废渣──Al(OH)_3凝胶再利用研究

研究了对处理铝材加工含Al3＋的酸性废液过程中产生的二次污染物Al（OH）3凝胶废渣的应用。含水分约90％、80％左右的Al（OH）3凝胶200g分别与14～16mL、22～24mL95％的工业浓硫酸酸反应，可制得浓度为20％～23％的Al（SO4）3溶液，经稀释可用作造纸原料。     

Origin of raised maternal serum alpha-fetoprotein levels in second-trimester oligohydramnios

Concanavalin A (Con A) subtyping of alpha-fetoprotein (AFP) revealed higher concentrations of AFP non-reactive with Con A in sera of 12 pregnant women with second-trimester oligohydramnios and raised total serum AFP levels than in sera of 42 pregnant women with raised total serum AFP levels and a normal amniotic fluid volume. This suggests that in oligohydramnios the origin of excess AFP in the maternal compartment is amniotic fluid. It is proposed that oligohydramnios and the associated raised maternal serum AFP levels are caused by damage of the fetal membranes prior to 16 weeks of gestation resulting in leakage of amniotic fluid to the decidual tissue and resorption in the maternal circulation.     

Solid phase extraction of methomyl and thiodicarb from environmental water with an activated carbon cartridge and their determination by HPLC

ＩｎｔｒｏｄｕｃｔｉｏｎＢｏｔｈｍｅｔｈｏｍｙｌａｎｄｔｈｉｏｄｉｃａｒｂａｒｅＮｍｅｔｈｙｌｃａｒｂｍａｔｅｐｅｓｔｉｃｉｄｅｓ.Ｍｅｔｈｏｍｙｌｉｓｅｆｆｅｃｔｉｖｅｏｎａｗｉｄｅｒａｎｇｅｏｆｉｎｓｅｃｔｓａｓａｎｏｖｉｃｉｄｅ,ｌａｒｖｉｃｉｄ...     

Conceptual understandings of the ecological engineering issues: in China and abroad

ＩｎｔｒｏｄｕｃｔｉｏｎＡｓａｎｅｗｂｒａｎｃｈｏｆｅｃｏｌｏｇｙａｎｄａｎｉｎｔｅｒｄｉｓｃｉｐｌｉｎａｒｙｆｉｅｌｄ,ｔｈｅｅｃｏｌｏｇｉｃａｌｅｎｇｉｎｅｅｒｉｎｇｗａｓｉｎｉｔｉａｌｌｙｆｏｒｍｕｌａｔｅｄｉｎｔｈｅｅａｒｌｙ1960ｓ.Ｄｕｒｉｎ...     

Serum PAPP-A levels are depressed in women with fetal Down syndrome in early pregnancy

The value of maternal serum pregnancy-associated plasma protein (PAPP)-A in screening for Down syndrome in early pregnancy was assessed using stored samples. Seventeen cases of Down syndrome and 66 unaffected control pregnancies were studied. The median PAPP-A level in the cases was 0.42 multiples of the expected value in controls (p <0.0001). Eleven cases (65 per cent) had levels less than half the expected value compared with only six controls (9 per cent). A commercial assay kit is now needed so that prospective screening with this marker can begin.     

功能区排放负荷污染系数百分比分配法研究

在考虑了总量控制区风频、风速和各功能区位置及污染源“影响范围”等影响因素的条件下，提出了“平均下风距离”的概念，从而建立了一种更为科学、合理的总量控制区内功能区排放负荷分配新方法。通过与 总量控制A值法所提出的面积分配方法相比较，验证了新方法的合理性和有效性。     

物化—生化组合工艺在鱼油工业废水处理中的应用

针对鱼油工业废水排放特点及处理技术难点，结合实例，采用混凝、破乳进行物化预处理；采用A／O生化处理技术，提出合适的工艺流程。     

多级A/O工艺在国内的应用现状

多级A/O工艺目前在国内市政和部分工业污水处理领域应用较多,具有预处理和污泥处理系统简单,污泥负荷低、处理效果好且稳定,投资低,曝气系统效率高、运行成本较低,维护管理简便等特点,但是在实际运行中也发现存在一些问题,如土池结构不适合地下水位高的地区的局限性,沉淀池效果较差、稳定池多余占地且污泥淤积难以清除,关键设备国产质量有待提高,工业污水处理少数水质指标偏高,需要设计人员选择适合其条件的场合应用,并进一步总结、改进和完善.     

Soil and water loss in the Lancang River-Mekong River watershed (in Yunnan section, China) and its control measures

ＭｅｋｏｎｇＲｉｖｅｒｉｓｏｒｉｇｉｎａｔｅｄｉｎｔｈｅｎｏｒｔｈｅｒｎｒａｎｇｅｏｆＴｉｂｅｔＱｉｎｇｈａｉＰｌａｔｅａｕｏｆＣｈｉｎａ,ｆｌｏｗｉｎｇｔｈｒｏｕｇｈｓｉｘｃｏｕｎｔｒｉｅｓ,ｔｈｅｙａｒｅＣｈｉｎａ(ＹｕｎｎａｎＰｒｏｖｉｎｃｅ),Ｍ?..