硫醚

Technically, the PPS is a full-automatic only weapon, based on simple blowback principle, and is fired from the open bolt.

从技术上说，聚苯硫醚是一种全自动的唯一武器，基于简单的反作用原则，从开放的螺栓开枪。

This paper studies the synthesis of butyl sulfide under microwave irradiation and discusses the reaction condition.

研究了二丁硫醚的微波合成及其影响因素。

The results reported before showed that phyco-bilins are intermediades in the biosyn thesis of phycobilip-roteins and the thioether formation of phy cobilins are thelast step of the chromoprotein biosynthesis.

实验证明在藻胆蛋白生物合成过程中，藻胆色素是中间体。藻胆色素的硫醚键形成是其过程的最后一步。

Herein, we synthesized six metalloporphyrins linked with stable nitroxyl radials, and evaluated their catalytic activity for the oxidation of glycosyl sulfides to glycosyl sulfoxides.

本论文设计、合成了6个连有稳定氮氧自由基的卟啉及其铁、锰的络合物，考察了它们对糖基硫苷等硫醚类化合物氧化成亚砜的催化性能。

4 Kinds of methylthiazoline multithioether s were synthesized from the nucleophilic substitution of 5-methyl-thiazolidine-2-thione reacting with bromides,respectively.

通过5-甲基-2-噻唑烷硫酮与溴代物的亲核取代反应合成了四种甲基噻唑啉多头硫醚，利用红外光谱、核磁共振(1H NMR)光谱和元素分析对这四种化合物的结构进行了表征。

In addition to the two axial ligations provided by His18 and Met80, the hydrogen bond and hydrophobic interactions between the heme and the protein polypeptide, the heme also covalently linked to the protein matrix through two thioether bonds which are formed between vinyl groups of the heme and cysteine residues of a classic Cys-Xaa-Xaa-Cys-His heme-binding motif of the polypeptide chain.

Cyt c是血红素蛋白中电子传递蛋白的典型代表，其辅基heme与蛋白肽链的结合除了来自heme轴向配体组氨酸(His18)和甲硫氨酸(Met80)的配位作用、氢键和疏水相互作用等非共价键作用方式外，血红辅基heme的两个乙烯基还与蛋白肽链上的结构片段域Cys-Xaa-Xaa-Cys-His中的两个半胱氨酸形成硫醚键以共价键方式相结合。

In this paper, we have initiated the relationship between molecular connectivity index and retention value in TLC for ten amino acids, eleven sulfides, six mercaptans and twenty 2,4-dinitrophenylhydrazones of aldehydes or ketones respectively.

把分子连接性指数法应用到10种氨基酸、11种硫醚、6种硫醇和20种醛、酮的2，4－二硝基苯腙薄层色谱保留值的相关性研究中。

The results show that the TSR reaction occurred at 425℃~525℃ with MgO, C, H2S, CO2, and a series of organic sulfur compounds such as mercaptans, sulfoethers, and thiophenes as the main products.

结果表明，硫酸盐热化学还原反应在425℃~525℃可以进行，主要生成氧化镁、炭、硫化氢、二氧化碳以及硫醇、硫醚和噻吩类等有机硫化物。

A novel topological index derived from eccentric connectivity has been proposed, and correlated with three thermodynamic properties such as standard enthalpy, standard entropy and standard formation free energy of 94 molecules of mercaptans and thioether s.

提出了一个新的拓扑指数，并用此指数和与此有关的偏心连通性指数研究了 71个硫醚分子和 2 3个硫醇的气态标准生成热(-△Hf2 98 )，气态标准熵(S2 98 )，气态标准生成自由能(△Gf2 98 )等三类热力学性质。

Based on the principle of molecular emission in hydrogen flame,sulphur-containing and phosphorus-containing substances in solutions were determined directly using self-made apparatus.

1前言硫化合物如甲硫醚等是造成环境水体中恶臭污染的主要原因之一[1]，同样磷是有机磷农药、磷肥的主要成分，也是环境水质监测中的重要元素。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。