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So it has made the great progress. The method studied in this research from o-Dichlorobenzene is a ideal route to synthesize 2,4- dichlorofluorobenzene, which has temperate condition easy to control,safe process,low cost and good quality of products; The method of Phase transfer catalysis fluorination without solvent is better than present technology in presence of DMSO as solvent in many aspects; In a word,it is worth being promoted by the domestic correlative factories.

本课题所研究的以邻二氯苯为原料的2,4-二氯氟苯合成路线反应条件温和,工艺容易控制,生产安全,而且产品质量好,是比较理想的合成路线;以季胺盐为催化剂的无溶剂相转移催化氟化法与溶剂法相比具有明显的优势;通过实验确定的工艺条件对工业化生产有重要的指导意义,可提高以邻二氯苯为原料的工艺路线的市场竞争力。

Then, this chapter makes a specific analysis of the design of bankruptcy-remote system for SPV, which means that SPV is immune from the bankrupty risk of the originator, of itself, of the incorporator and of other securitization entities.

在资产转移方面,法律主要解决以下两个问题:一是资产转移的方式,即法律上以何种形式确保特殊目的载体为受让资产的唯一权利人;二是确保资产转移能接受真实出售的检验。

The main content of this paper as follows: The acidic strength, reaction temperature, reaction time of Chlorine-aluminate Ionic Liquids with different structure of cation on the activity of transalkylation of MN with TeMB and the selectivity of 2,6-DMN were studied. The optimum reaction condition was obtained: the molar fraction of AlCl_3 is 0.71, molar ratio of 2-MN and TeMB is 1, the amount of ionic liquid is 32wt%, reaction temperature is 20℃and reaction time is 8h using X-xAlCl_3 and X-xAlCl_3 as catalysts; the optimum reaction time is shortened 6h using Et_3NHCl-xAlCl_3 as catalyst.

本文主要研究了以下内容:分别考察了不同阳离子结构的氯铝酸盐类离子液体的酸强度、反应温度、反应时间等因素对MN和TeMB转移烷基化的催化反应活性和2,6-DMN选择性的影响,优化得到适宜的反应条件为:以X-xAlCl_3和X-xAlCl_3为催化剂时,AlCl_3的摩尔分数x=0.71,2-MN和TeMB摩尔比为1∶1,离子液体用量为32wt%,反应温度为20℃,反应时间为8h;以Et_3NHCl-xAlCl_3为催化剂时,反应时间缩短到6h。

Witness the variety of wild landscape and wild life in this exotic land Tour itinerary Day 1 7Am Pick up from your hotel in Cairo, transfer to the bus station, take the bus to Baharia Oasis, 360 kilometers south west of Cairo, 1after noon, transfer from the bus station in Baharia to the hotel there, having lunch and starting jeep tour to the white desert, in your way to their you will see the old white desert, the new white desert, flower stones, salt lack and springs, in the evening you will have your tent in the white desert, enjoying the most magic sunset you can imagine and discover the secrets of the desert at night, at night our Bedouin friends they will do for you food by fire and over night there in tent in the white desert, Day 2 Next day in the morning, you will be driven to see the quartz Crystal mountain, black desert, back to the hotel in Baharia Oasis, having lunch and relax for bit, 2,30 pm transfer to the bus station taking 3pm bus back to Cairo, 8pm transfer from the bus station to your hotel in Cairo.

证人在这异国土地上的野生景观和野生动物品种旅游行程第1天上午7时从酒店选择在开罗,转移到汽车站,乘坐公车到Baharia绿洲,西南360公里的开罗,1after中午,转移从Baharia车站到酒店那里吃午饭,开始吉普车游以白色沙漠您的方式,对他们您将看到老白沙漠,沙漠中的新白,花石,盐缺乏,泉水,晚上,你有你自己在白色沙漠帐篷,享受您最神奇的日落可以想像,并且在夜间沙漠的秘密晚上,我们的贝都因人朋友,他们会为你做火的食品和白色沙漠帐篷里过夜,在那里,第2天在第二天早上,你将被迫看到石英水晶山,黑沙漠,回到了Baharia绿洲酒店,吃午饭,放宽一点,2,30下午转移到汽车站到下午3点走回开罗晚上八时转由汽车站到您在开罗酒店。

We used ITO glass substrate and high purity(99.99%) titanium , put to use sputtering process, add to high purity O2 make it complete the best structure film and the thickness about 1400 . By way of 500℃ anneal could got a better anatase phase, this result could easy reaction with electrolyte to increase electron-transferred. Used as spin casting covering PR on ITO substrate, transferring patterns of array circular shapes on a mask to photography, used optimize temperature and time to hard bake. Finally used HCl to etching underexposed TiO2 area, and acetone to tripper top PR, make it to accomplish pillars shape TiO2 electrode.

本研究使用ITO玻璃基板为底材在以高纯度钛(99.99%)为靶材,利用溅镀方式通入纯氧使其行成高纯度TiO2镀於ITO基板上行成厚度约1400的薄膜,且经500℃高温烧结使其行成最强的锐钛矿结晶相,此晶相有利於与电解液反应进而增加电子的转移,提升太阳能电池最佳的效率,在以旋转涂布方式铺上光阻,以矩阵排列的圆孔光罩曝光、最佳的温度及时间来烘烤、显影后;使用盐酸以等向性湿蚀刻方式蚀刻未曝光之TiO2区域,最后利用鈵铜将最上层光阻去除,使其行成柱状TiO2的电极。

In this thesis,the AM1,MNDO,MINDO/3(mainly AM1)and INDO/S-CI semiempirical MO methods were used toinvestigate the excited-state intramolecular protontransfer reactions of salicylic acid derivatives—salicylic acid,methyl salicylate,salicylaldehyde,o-hydroxyaceto-phenone,salicylamide and 3-hydroxy-picolinamide (6 conformers and 2-3 anion species);2-(2'-hydroxy-5' methylphenyl) benzotriazole(4 conformers),2-(2' hydroxyphenyl) benzimidazole (3 conformers and 3anion species),Bis-2,5-(2-benzoxazolyl)hydroquinone(3 conformers),2-(2'-hydroxyphenyl)benzothiazole(2conformers) and 7-azaindole dimer (2 conformers).Theinvestigations were described as follows.Geometry optimization,relative stability andhydrogen bonding energy First,for sylicylic acid derivative molecules,the AM1,MNDO and MINDO/3 methods were used toinvestigate ground-state geometry optimization,energies,relative stabilities and hydrogen-bondingenergies on the five kinds of the molecules(designing 6 conformers and 2-3 anion species).Comparing with experimental data,the optimizedgeometry,the order of stability,the hydrogen-bonding energies and the distances between O-O in O-H..O hydrogen bonds by AM1 method were in agreementwith the experimental data,however,the C-C bondlengths optimized by MNDO and MINDO/3 were longer,C-O and O-H bond lengths were shorter;for C-N bondlengths,the results opitimized by MNDO method werethe same as those by AM1 method,nevertheless the C-Nbond lengths given by MINDO/3 method were muchshorter.For some sylicylic acid derivatives(e.g.methyl salicylate,salicylamide),the order ofstabilities on the conformers given by MNDO andMINDO/3 methods were not in agreement with theexisting conformers deduced by experimental methods,and the hydrogen bonding energies calculated by MNDO.and MINDO/3 methods were smaller.Second,the studyon the other systems found that the optimizedgeometry of the proton-transfered product with INDOmethod could not be obtained,only could theoptimized geometry of reactant be obtained,and thecalculated hydrogen bonding energies were greater.Many results of calculation indicated that the studyon the excited-state intramolecular proton transferreaction system using AM1 method was suitable andreliable.

本论文用AM1、MNDO、MINDO/3(主要是AM1)和INDO/S-CI半经验分子轨道方法对水杨酸衍生物系列——水杨酸、水杨酸甲酯、水杨醛、O-羟基乙酰苯酮、水杨酰胺和3-羟基吡啶酰胺(6种异构体和2-3种阴离子);2-(2'-羟基-5'-甲基苯基)苯并三〓唑(4种异构体);2-(2'-羟基苯基)苯并咪唑(3种异构体和3种阴离子);2,5-二间氮杂氧茚氢醌(3种异构体);2-(2'-羟基苯基)间〓杂硫茚(2种异构体)和7-〓吲哚二体(2种异构体)的激发态分子内质子转移反应在以下几个方面进行了较系统的理论研究:几何构型优化和相对稳定性及氢键能首先以水杨酸衍生物系列分子为例,用AM1、MNDO和MINDO/3方法考察了5种分子(每种分子设计6种异构体和2-3种阴离子)的基态几何构型优化,能量、相对稳定性和氢键能计算,通过和实验数据进行比较,AM1方法给出的优化几何构型、稳定性次序、氢键能和O—H。。。O氢键的0—0距离与实验数据吻合最好,MNDO和MINDO/3方法优化的C-C键长偏长,C-O键和O-H键长偏短;对于C-N键长,MNDO和AM1优化结果差别不大,而MINDO/3给出了过短的C-N键长,MNDO和MINDO/3方法给出的有些水杨酸衍生物分子(如水杨酸甲酯和水杨酰胺)异构体的稳定性次序和实验上推测的可存在异构体结果不一致,MNDO和MINDO/3方法给出的氢键能偏低,对其他体系的研究发现INDO方法常常不能得到质子转移产物的优化几何构型,只能得到反应物的优化构型,并且估算的氢键能偏高,大量的计算结果表明AM1方法对本论文研究的激发态分子内质子转移反应体系是适宜和可靠的。

Simultaneously we prepared benzimidazolines with two methods by the reducton of benzimidazolium salts with NaBH_4 and Grignard addition with benzimidazolium salts. Thus we provided a new biomimic synthetic method for 9 kind of tetrahydro-β-carboline starting from carboxylic aicd and halid. A convenient synthetic method for preparing tetrahydro-β-carboline was provided.

本文以1,3-二甲基苯并咪唑碘盐和2-取代的1,3-二甲基苯并咪唑碘盐为原料,采用了NaBH_4还原和Grignard试剂加成两种方法,制备了9种1,3-二甲基苯并咪唑烷和2-取代的1,3-二甲基苯并咪唑烷作为四氢叶酸辅酶一碳单元转移新模型,在酸性条件下,以色胺作为接受一碳转移的亲核试剂,完成9种四氢-β-咔啉类化合物的新合成方法研究。

Simultaneously we prepared benzimidazolines with two methods by the of reduction benzimidazolium salts with NaBH_4 and Grignard addition with benzimidazolium salts. Thus we provided a new biomimic synthetic method for 13 kind of tetrahydroisoquinoline starting from carboxylic aicd and halid, gave a new idea of the synthesis for new drugs.It can make many kind ofβ-carboline alkaloids which have bioactivity to antibacterium, antivirus and antitumor to start from 1,2,3,4-tetrahydro -β-carboline.

本文以1,3-二甲基苯并咪唑碘盐和2-取代的1,3-二甲基苯并咪唑碘盐为原料,采用了NaBH_4还原和Grignard试剂加成两种方法,制备了13种1,3-二甲基苯并咪唑烷和2-取代的1,3-二甲基苯并咪唑烷作为四氢叶酸辅酶一碳单元转移新模型,在酸性条件下,以2-(3,4-二甲氧基苯基)乙胺作为接收一碳转移的亲核试剂,完成了13种重要的四氢异喹啉类化合物的新合成方法研究。

The mechanism of the construction of the meaning systems of body terms is disinterred detailed as what described below: the similarity and the contiguity act as the cornerstone, the cognitive salience on the potential similarity and the contiguity perform as the promoter, and metaphor and metonymy behave as the two paths by mapping between domains in metaphor or transferring in one domain in metonymy separately via several methods, and finally the new meanings, thereby get constructed.

人体词语语义建构的机制是:以相似性和邻近性为本,以认知主体对潜在的相似性和邻近性进行认知突显为助推器,以隐喻和转喻两种认知模式为途经,通过几种形式的跨域投射或域内转移而实现人体词语新的词义建构。

The2 0 th century was the third high-tlide of researches on paradox in the west following the ancient Greek and Middle Ages studies.Which can be divided into three periods,the first of which was from190 1to the1930 s when Russel discovered it,mainly emphasizing collective paradoxical studies.The second one was from the1940 s to the mid-1970 s,it m ainly stressed the semantic para- doxical studies.

20世纪西方悖论研究是继古希腊和中世纪之后出现的第三次悖论研究的高潮时期,可划分为三个阶段:1 90 1年罗素悖论发现至 30年代末为第一阶段,主要以集合论悖论研究为重点;4 0年代初至 70年代中叶为第二阶段,逐渐转移到以语义悖论研究为重点;70年代中叶至 2 0世纪末为第三阶段,回归到自然语言,在语形、语义、语用的统一中研究悖论问题。

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推荐网络例句

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车,和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特,那个是爱朗。

Articulate the aims, objectives and key aspects of a strategic business plan.

明确的宗旨,目标和重点战略业务计划。