研究了重氮烯氢向前手性烯烃单侧的非对映选择性转移。
Diastereoselective transfer of the diazene hydrogen to one face of the prochiral alkene was studied.
本文介绍了用重氮转移法合成具有较大空间位阻的重氮乙酸二环己基甲酯、L- 薄荷酯和叔丁酯。
Synthesis of sterically hindered dicyclohexylmethyl, L menthyl and tert butyl diazoacetate by diazo transfer was described on this paper.
科学家认为过量的重氮来自彗星。
Scientists say the excess heavy nitrogen could have come from a comet.
本文叙述了重氮复印法的原理及优点。
This paper presents the principle and advantage of diazocopy.
研究了重氮母片的特性对重氮复印的影响。
The influence of the characteristics of diazo master on the copy process were studied.
本文对已报道过的重氮氨基类试剂分类进行了综述；
This paper described diazoamino - reagents that were reported by means of classification.
本文对含重氮萘醌化合物的翻转成像体系作了详细的总结。
The article presented the progress of image reversal components composing naphthoquinone diazide compounds.
电子级2.1.5 -重氮萘醌磺酰氯的萃取液及其制备方法。
Extraction liquid of electronic grade 2, 1, 5-diazo naphthoquinones sulfonyl chloride and preparation method thereof.
作者用有机近代分析方法对有争议的重氮树脂的结构进行了探讨。
This paper also discusses the relation between properties and the structure cf diazo resin.
由取代二苯胺重氮树脂制备的阴图PS版热稳定性好，贮存期长。
The negative PS plate prepared from substituted diphenylamine diazoresin possesses good thermostability as well as long storage-life.
文章介绍了用重氮系感光乳剂直接制网版工艺并对技术问题作了分析。
The article introduces direct stencil making process with diazo sensitive emulsion. It also offers technical specifications and some recommendations.
在碱性水溶液中酚醛树脂可视为阴离子聚电解质，可与重氮树脂形成复合物。
Phenolic resin in alkali aqueous solution can be regarded as anionic polyelectrolyte and forms complex with diazo resin.
本文以对氨基苯乙酮和二茂铁为底物，在相转移催化剂存在的条件下发生重氮芳基化反应。
In this paper, we investigated the arylation reaction ofp-amino acetylbenzene with ferrocene catalyzed by phase transfer catalyst.
本文综述了酚醛重氮萘醌正性抗蚀剂的溶解抑制机理，主要包括（1）分子间氢键作用机理；
The mechanisms of dissolution inhibition of positive photoresist based on novolak(NVK)-diazonaphthoquinone(DNQ), including(1) the molecular hydrogen bonding interactions between novolak and DNQ;
首先，通过后重氮偶合方法合成了一系列含咔唑基多功能生色团的光折变聚磷腈P6-P10。
Post-azo-coupling reaction was successfully applied to synthesize a series of photorefractive polyphosphazenes P6-P10 containing carbazole-based multifunctional chromophores.
重氮甲烷与酸性除草剂发生衍生反应，生成易于气相色谱-质谱测定的酯类化合物，反应条件温和，副产物少。
Under mild reaction condition, the derivative reaction of diazomethane with acid herbicides occurred and produced ester compounds with little by-products, which could be easily detected by GC-MS.
科学家认为重氮来自一颗彗星，而重氧则是来自行星形成的自然过程，这一过程把更轻的氧同位素留在了星云中，形成了太阳。
Scientists say the excess heavy nitrogen could have come from a comet. And the heavier oxygen from a natural process that left more of the light isotope in the part of the nebula that made the sun.
二氢-2-甲基-4-苯基-1，5-苯并硫氮杂卓与重氮乙酸乙酯反应，得到非预期的分子内重排的开环产物。
From the reaction of 2,3 dihydro 2 methyl 4 phenyl 1,5 benzothiazepines with diazozcetic ester an unexpected ring open product of the intramolecular rearrangement was obtained.
采用自行设计制造的重氮甲烷发生装置，有效控制了二甲基亚硝基苯磺酰胺的反应用量，减少了有害气体的排放。
By adopting the self-designed diazomethane generating device, the dosage of reaction reagent of diazald was effectively controlled and the harmful gas release was reduced.
论文还探索性地研究了在该催化体系下取代二茂铁的重氮芳基化，对合成取代二茂铁类芳基化产物具有一定的指导作用。
Finally, we also investigated the arylations of substituted ferrocenes under the same conditions and the results may be a useful guidance for the synthesis of these compounds.
研究了2-羟基-5-磺酸苯基重氮氨基偶氮苯（HSDAA）与镉的反应，建立了直接测定铝合金中镉的光度分析方法。
The reaction of 2-hydroxy-5-sulfophenyl-diazoaminoazobenzene (HSDAA) with cadmium was studied to establish the direct photometric determination of cadmium in aluminum alloy.
以Y型分子筛为载体，分别采用吸附法、吸附-戊二醛交联法、偶联法和偶联-重氮法4种方法对氨基酰化酶i进行固定化。
Acylase I was immobilized on Y-type molecular sieve by using 4 kinds of methods, namely, adsorption, adsorption-crosslink, coupling and coupling-diazotization.
本文对苯骈二氮卓类药物的热裂解机制以及其簿层展开后重氮偶合显色的色谱方法测定该类药物及其它含氮药物进行了详细研究。
Study on the pyrolytic mechanism of benzodiazepines and the determination of benzodiazepines and other nitrogen containing drugs by pyrolytic-TLC is discussed in detail in the article.
我们以聚乙烯咔唑为偶合组分，和发色基团对硝基苯重氮盐在相转移催化剂存在下，采用后重氮偶合方法，制备出偶氮化聚乙烯咔唑。
Poly (N-vinyl carbazole) was modified to prepare azo-PVK by post-azo-coupling reaction with diazo salt as raw material using phase-transfer catalysts.
百粒重随着施氮量呈现递增趋势。
The hundred - grain weight increased with the increasing nitrogen content.
羟氯喹加柳氮磺吡啶疗法是只推荐给那些患病时间中等(6 -24个月)，病情重但是没有不良预后特征的患者。
Hydroxychloroquine plus sulfasalazine is recommended only for patients with intermediate disease duration (6-24 months) and high disease activity but without poor prognostic features.
概述了目前高氮钢的主要制备方法，重点讨论了常压和高压电渣重熔高氮钢的特点和存在的问题；
The features and problems of manufacturing high nitrogen steels by the electroslag remelting method at normal atmospheric pressure and high pressure have been discussed in detail.
分析了用电弧渣重熔（ASR）法生产高氮钢的技术优势，认为用ASR法生产高氮钢是目前比较可行的方案。
The arc slag remelting(ASR) process will be a prospective method of manufacturing high nitrogen steels, which has some obvious technical advantages compared with other methods.
该课题的研究对于提高发射场四氧化二氮质量控制水平具有十分重要的意义。
This study is significant for enhancing the quality control of the nitrogen tetroxide on launch site.
该课题的研究对于提高发射场四氧化二氮质量控制水平具有十分重要的意义。
This study is significant for enhancing the quality control of the nitrogen tetroxide on launch site.
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