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Using MA as raw material, Xuzhou Chemical and Medicine Industrial Corporation is to produce 20,000-tonne 1-4 butanediol and 4,000-tonne tetrahydro furan per year.

1.4二醇联产四氢呋喃工程1-4 Butanediol and Tetrahydro Furan Production 徐州市化学医药工业公司拟以顺酐为原料,采用顺酐法低压加氢工艺,建设年产2万吨1.4二醇,联产4000吨四氢呋喃生产线。

But the electrochemical results show that complexes exhibitcompletely irreversible redox behaviour which is different from thatfound in diiron proteins. 1.3 To obtain the diiron species which are stable to elec-trochemical reduction, a series of new tetranuclear cage ironspecies containing two 〓 cores, with using hexadentatepolybenzimidazole ligands, were synthesized and characterized by vari-ous spectroscopic methods. Their physical properties have been investi-gated. The crystal structures of 〓〓tetrakis (benzimidazol-2-ylmethyl)-1, 4-diaminobutane and 〓,〓-tetrakis ( N-ethylbenzimidazol-2-ylmethyl )-1, 4-diaminobutane were determined. They contain two 〓 cores which arelinked to each other by -〓-chain in the ligands.

1.3为了获得电化学还原稳定双核氧桥联Fe化合物,使用六齿配体合成了一系列含有两个〓单元四核笼状化合物,并用各种谱学手段表征了它们,还研究了它们的物理化学性质确定了〓L=N,N,N',N'-四(苯骈咪唑基-1,4-二胺和〓,〓四-1,4-二胺化合物的晶体结构,它们含有两个〓单元,其中两个〓单元是通过配体的〓链桥联成四核笼状结构。

She worked with Esther Martinez for many years recording her stories and developing CDs for the Tewa Language Project. She says stories serve both a religious and everyday purpose in the pueblo.

合作已经有许多年了,她录制马太太讲的故事,并为特瓦语项目刻成光盘,她说这些故事既能为普韦布洛印第安人的宗教服务,也能为他们的日常生活提供帮助。

For the edicts of the emperor Constantine, commanding the public to maintain the children of those who were unable to provide for them, in order to prevent the murder and exposure of infants, and institution founded on the same principle as our foundling hospitals, though comprised in the Theodosian code23 were rejected in Justinian's collection.

的法令——指示社会成员合力抚养那些父母无力抚养的孩子,以阻止谋杀和丢弃婴孩,这种社会制度基于和我们弃婴医院同样的原则,虽然包含在《狄奥多西法典》之中(狄奥多西,东罗马帝国皇帝和整个罗马帝国的皇帝,347~395)却被《查士尼法典》所拒绝(查士尼,东罗马帝国皇帝,483~565)。

It is implied that research on thermostable chitinase is of importance in industrial exploitation.

但市场应用的几质酶主要来源于常温菌,因产品成本高,热稳定性差,货架寿命短,酶活力和产率低而制约几质酶在农业、工业上的应用。

In order to improve the accuracy and sensitivity in detecting of chitinase isozymes from Trichoderma. spp, a rapid sensitive method is established.

为提高木霉几质酶检测方法的准确性和灵敏度,建立一种快速检测几质酶同工酶的方法。

In this dissertation, two series of rare earth initiators: rare earth tri (2, 6-di-tert-butyl4-methylphenolate) and rare earth calixarene complex have been developed to ring-opening polymerize 2, 2-dimethyltrimethylene carbonate, trimethylene carbonate and ε-caprolactone at mild conditions. Both the polymerization features and mechanisms are discussed in details.

本论文为环碳酸酯、内酯的开环聚合开发了两类新型低毒性稀土催化剂:三(2,6-二叔基-4-甲基苯氧基)稀土配合物和对叔基杯芳烃稀土配合物,都可以在温和的反应条件下单组分引发2,2-二甲基三亚甲基环碳酸酯、三亚甲基环碳酸酯和ε-己内酯聚合,合成各种分子量的均聚和共聚材料,考察了催化剂结构、聚合条件等对聚合的影响,深入研究了聚合机理。

In this work,the non\|aqueous carbonyl nickel slips were prepared by ball\|milling using Cyclohexanone\|butyl alcohol,Glycerol trioleate,Poly\|vinyl\|butyl and polyethylene glycol as the solvent,dispersant,binder and plasticizer,respectively.

本文以环己酮醇为溶剂,三油酸甘油酯为分散剂,以聚乙烯醇缩醛为粘结剂,聚乙烯乙二醇为增塑剂,通过球磨工艺制备了非水基羰基镍粉浆料。

It was shown that the purity of the aim product was higher than 99% and its yield was 60%~70%. The intermediate product p-tertbutoxycarbonyloxybenzaldehyde could be synthesized conveniently and quantitatively. The main byproduct was triphenylphosphine oxide.

结果表明,所得目标产物对特氧酰氧基苯乙烯纯度达99%以上,产率为60%~70%,中间产物对特氧酰氧基苯甲醛可以定量合成,反应的副产物主要是三苯基氧化膦。

A series of lanthanide complexes (Ln = Er, Nd, Yb) with infrared emission properties were designed and synthesized by using different anionic ligands [1 -phenyl-3-methyl-4-(4-tertbutylbenzoyl)-5-pyrazolone and l-phenyl-3-methyl-4--5-pyrazolone and 2-naphtoyl trifluoroacetone] and netural ligands (2,2-dipyridine, phenanthroline, triphenylphosphine oxide and water). Three crystal structures of these complexes were obtained and structure studied, and the properties of photoluminescence and fluorescent lifetime were studied in detail.

我们通过选用不同的第一配体[1-苯基-3-甲基-4-(4-异酰基)-5-吡唑酮,1-苯基-3-甲基-4-(4-叔基苯甲酰基)-5-吡唑酮和2-萘基三氟乙酰丙酮]和第二配体(2,2-联吡啶,邻菲啰啉,三苯基氧膦)合成了16个稀土红外配合物(Ln=Er,Nd,Yb),获得了其中三个配合物的单晶结构,研究了这些稀土红外配合物的光致发光和荧光寿命等性质。

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推荐网络例句

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候,里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色,卵在发育96h后卵基本全部孵化。

There was a conflict between plebs and patricians in ancient Rome in 494BC.

在公元前494年,罗马发生了一次平民反对贵族的斗争。