萘并
- 与 萘并 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Through experiment, we have found that the combination of naphthol/sodium naphtholate is a high efficient bifunctional catalyst for direct aldol reaction.
通过实验,我们发现并筛选出了一组活性较高的β-萘酚和其钠盐双功能催化剂,该方法不需要预先活化Aldol反应的底物就能直接反应,且反应可在室温进行,条件温和,速度快,收率高达98%。
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In order to study the struture activity relationship of these naphthazarin compounds and to search for more effective anti-tumor agents. We synthesized dl-shikonin and shikonin, alkannin respectively.
为了对这类萘醌类化合物作进一步的抗肿瘤活性试验,我们合成了消旋紫草素,紫草素,异紫草素及环紫草素和环异紫草素,并探讨其可能的作用机制,和作用区域。
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Chapter 4 comprises two part. Part reports on the manufacture and characterization of glucose oxidase -silver sol-polyvinyl butyral modified platinum electrodes with naphthol green B as an electron transfer mediator in the glucose solution.
将纳米Ag溶胶与聚乙烯醇缩丁醛构成复合固酶膜基质,采用溶胶-凝胶法固定GOD修饰铂丝电极,并以葡萄糖溶液中的萘酚绿B为电子媒介体组成葡萄糖生物传感器。
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A nonaquous capi l l ary e l ecbophoretic chira l separation of l , l '-bi-2-naphtho l with a new chira l se l ector N-benzy l cinchonine ch l oride is described in this paper.
利用新的手性选择剂苄基氯化辛可宁,在非水相中成功地分离了联萘酚对映体,并对分离的机理作了初步地探讨。
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In view of their theoretical and practical significant importance in the investigation of sophisticated biological topics, and in the development of novel drugs and new biochemical tools, DNA intercalators and cleavers have received much current interest This dissertation focuses on synthesis of hetrocycles containing naphthalene moiety and on the mechanism of their interactions with DNA.
DNA嵌入、切断剂的研究,对探索生命科学中的复杂问题,发展新药、新型生化工具具有非常重要的理论和实际意义,成为当前多学科的研究热点。本文从我国国情出发,以国内资源丰富的萘类化合物为基点,设计、合成了一系列多杂环平面刚性分子,并对某些化合物与DNA相互作用的分子机理进行了研究。
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Leaves of field wheat in florescence were sprayed and the cutting leaves of hollyhock were soaked at base with aqueous solutions of N-(1-Naphthaleneacetyl)-N′-(4-Aminopyryl) Thiourea of 10, 20, 50 mg .
以新合成的N-(1-萘乙酰基)-N′-(4-氨替吡啉基)硫脲配制成不同浓度(10、20、50 mg 。 L-1)的水溶液,对大田扬花期小麦进行叶面喷洒和蜀葵叶片扦插基部的浸泡处理,并在分别含有0.1 mg 。
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When the protoplast-derived calli were transferred into the MS solid medium added with 2.0mg/L benzylamino-purine and 0.4mg/L naphthaleneacetic acid and cultivated in the codition of low illumination, after which the adventitious shoots were induced, then we could obtain numerous plantlets and could transplant them survival to pots in the greenhouse.
当将原生质体分裂形成的愈伤组织转移到附加2.0mg/L6-苄氨基嘌呤和0.4mg/L萘乙酸的MS固体培养基上,并在低光照条件下培养后,从愈伤组织上分化出了不定芽,进而发展成小植株,并移栽成活。
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But the yields decreased to 71~37% in n-propanol, i-propanol and i-butanol, with another trimeric byproduct 1-oxo-13c-(2-naphthyloxy)-1, 13c-dihydro-dibenzo xanthenes (29) increasing up to 30% yield.
而在正丙醇、异丙醇和异丁醇中二苯并咕吨4~6的产率下降至71~37%,另一个二聚体副产物1-氧代-13c-(2-萘氧基)-1,13c-二氢-二苯并-咕吨(29)的含量增加,产率可达30%。
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Based on the changes in the spectrum characters of guest molecules producedthrough inclusion complex formation with cyclodextrins, we have carried out two aspects of investigation:First, the mechanisms for the host-guest recognition reactions have been studied, such as the interactions between 3-CD and curcumin, the main constituent of the rhizomes of the plant Curcuma longa, the recognition of p-CD towards rubidate, the effective component of the Chinese traditional medicine madder, and the reactions of p-CD towards the antileprotic drug dapsone and the antiinflammatory drug nabumetone: The formation of supramolecular complex between P-CD and guest molecule has been discussed and verified in virtue of multitudinous means such asultraviolet-visible absorption, fluorescence emission, infrared spectrogram and so on. The influence of addition of linear alcohols on the supramolecular system has been studied and the reason why the noncovalent interactions in the three-component system could result in a decrease in the apparent association constant of the inclusion complex has been revealed.
本论文基于环糊精对被包结客体光谱性质的改变,开展了两大方面的研究:β-环糊精对姜黄属植物根茎主要成分—姜黄素、中药茜草有效成分—茜草双酯、抗麻风药物氨苯砜及抗炎药物萘丁美酮的主-客体识别反应机制研究:借助超分子包合物的紫外吸收光谱、荧光光谱或红外吸收光谱等手段,通过多种方法探讨并验证了超分子包合物的形成;研究了直链醇的加入对超分子体系的影响,揭示了三元体系中非共价相互作用导致超分子包合物表观结合常数降低的原因:对超分子包结反应进行了热动力学研究,探讨了各热动力学参数的变化趋势并从熵焓互补的角度考察了超分子包结过程;通过荧光猝灭实验进一步揭示了水相中β-环糊精增敏客体荧光的本质原因,从而为超分子化学提供新的理论和研究方法。
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Enynes with an aryl ring at the alkyne give 2,3,9,9a-tetrahydro-1H-cyclopentanaphthalenes by a 5-exo-dig cyclization followed by a Friedel-Crafts-type ring expansion.
带有芳环的1,6-二烯体和炔作用,并通过5-exo-dig路径环化,再紧接着Friedel-Crafts扩环,可以得到2,3,9,9a-四羟基-1H-环戊二烯并萘。6-endo-dig途径的环化在一些例子中作为副反应被观察到,尽管,这在一些具体的反应中,是作为主反应出现的。
- 推荐网络例句
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The split between the two groups can hardly be papered over.
这两个团体间的分歧难以掩饰。
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This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.
这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。
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The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.
聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力