芳烃

Amino-sulfonic acid single aromatic ring typehigh range water reducer was synthesized form aminobenzene sulfonic acid,phenol and formaldehyde. The influence of monomers ratio,reaction temperature,reaction time,pH value,the concentration of monomer on the performance of AS high range water reducer was analyzed.

以对氨基苯磺酸钠、苯酚和甲醛等为原料合成出了氨基磺酸单环芳烃型高效减水剂，研究了反应单体的摩尔比以及工艺参数对AS高效减水剂对水泥颗粒分散效果的影响。

Pot experiment was conducted with a series of treatments of soils in a greenhouse to investigate the effects of arbuscular mycorrhiza on the residual forms of PAHs in soils.

采用盆栽试验方法，以危为多环芳烃代表物，研究了丛枝菌根作用下土壤中PAHs的残留及形态。

The complexation of SCnA also results in a bathochromic shift and a decrease in optic intensity of the absorption spectrum of DS.

在水溶液中磺化杯芳烃可与二苯胺重氮盐形成包结物，导致DS的化学位移向高场移动，同时使其吸收光谱红移，强度下降。

BACKGROUND: Benzo pyrene is kind of polyaromatic hydrocarbon which is a chemical pollutant extensively existing in living and productive environments. It is found overseas that it has neurotoxic effects under certain conditions.

背景：苯并芘代表的多环芳烃是一种广泛存在于生产和生活环境中的化学污染物，国外发现苯并芘在一定条件下具有体外神经毒性。

In order to develop a new method to study the desorption and bioavailability of hydrophobic organic chemicals in soils, a method using semi-permeable membrane device to study desorption of HOCs in soils has been set up, and assisted desorption of polycyclic aromatic hydrocarbons, phenanthrene, pyrene, and benzo［a］pyrenein three different kinds of soils was studied using SPMD.

为了开发一种表征土壤中憎水性有机污染物解吸及生物有效性的新方法，建立了半透膜被动采样装置研究土壤中有机污染物解吸行为的方法，利用SPMD分析了多环芳烃菲、芘和苯并［a］芘在3种不同性质土壤中的辅助解吸行为。

If each -SO〓 group of arenedisulfonate could coordinate in monodentate or bidentate fashion, there will be six possible coordination modes.

如果每个芳烃二磺酸根离子的-SO〓基团都可以单齿或二齿形式配位，则有六种可能的配位模式。

The yield of biphenyl in a Triton X10 ME system was found higher than that in the biphase system. The reactivities in different ME were also studied.

结果表明，微乳体系中联苯收率高于两相体系；比较了在离子、非离子表面活性剂构成的不同微乳体系中的反应活性；研究了卤代芳烃在Tx10 ME中的甲酸钠、碱类型、Pd/C用量、温度等对反应的影响。

The prospect of chiral calix[4]arena is also discussed.

最后对手性[4]芳烃的发展前景作了展望。

The prospect of chiral calix[4]arene is also discussed.

最后对手性杯[4]芳烃的发展前景作了展望。

The researche on calix[4]arene went mature, and they were widely used now.

到现在，杯[4]芳烃的研究已趋于成熟，其应用范围也日益广泛。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐