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2-(苯并咪唑)-6-[1-(芳基亚胺)乙基]吡啶基二氯化钴催化异戊二烯的聚合(英文)

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合成橡胶工业 2014年第6期37卷 485-485页

作者：温兴龙姜秀波孙文华贺爱华青岛科技大学高分子科学与工程学院橡塑材料与工程教育部重点实验室/山东省橡塑材料与工程重点实验室山东青岛266042 中国科学院化学研究所工程塑料重点实验室/北京分子科学国家实验室北京100190

以含不同取代基的2-（苯并咪唑）-6-[1-（芳基亚胺）乙基]吡啶基二氯化钴配合物催化异戊二烯聚合,考察了不同取代基对钴配合物催化异戊二烯聚合活性的影响,通过核磁共振氢谱和凝胶渗透色谱表征了聚合物的微观结构和相对分子质量及其分... 详细信息

以含不同取代基的2-（苯并咪唑）-6-[1-（芳基亚胺）乙基]吡啶基二氯化钴配合物催化异戊二烯聚合,考察了不同取代基对钴配合物催化异戊二烯聚合活性的影响,通过核磁共振氢谱和凝胶渗透色谱表征了聚合物的微观结构和相对分子质量及其分布。结果表明,催化聚合活性（1 mol Co）可达1.32×106g/h,3,4-结构摩尔分数为27%~30%,顺式-1,4-结构摩尔分数为70%~73%。

关键词：钴催化剂定向聚合异戊二烯催化活性顺式-1,4-结构 3,4-结构相对分子质量

细胞外基质蛋白1基因及蛋白在乳腺癌组织中的表达及其意义

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中华临床医师杂志（电子版） 2010年第8期4卷 45-48页

作者：侯彦强李梅彭亮曹辉王宏孙文化上海交通大学附属第一人民医院松江分院检验科 201600 山东省宁阳县妇幼保健院检验科

目的在基因和蛋白水平探讨细胞外基质蛋白1(ECM1)在乳腺癌中的表达及意义,并比较两种检测方法的应用价值。方法应用实时荧光定量PCR基因检测方法和免疫组织化学法分别检测乳腺组织(正常组织和癌组织)中ECM1基因(mRNA)和蛋白的表达,并比... 详细信息

目的在基因和蛋白水平探讨细胞外基质蛋白1(ECM1)在乳腺癌中的表达及意义,并比较两种检测方法的应用价值。方法应用实时荧光定量PCR基因检测方法和免疫组织化学法分别检测乳腺组织(正常组织和癌组织)中ECM1基因(mRNA)和蛋白的表达,并比较正常乳腺组织和乳腺癌组织之间的ECM1表达差异。采用受试者工作特征(ROC)曲线分析评估应用价值。结果乳腺癌组织中ECM1在基因和蛋白水平表达均明显高于正常组织(P<0.01),两者均有较好的诊断价值[实时荧光定量PCR基因检测曲线下面积(AUC)为0.834±0.038,免疫组织化学检测AUC为0.773±0.048]。结论 ECM1在乳腺癌组织中过表达,具有潜在的作为乳腺癌肿瘤标记物的应用价值。

关键词：乳腺肿瘤细胞外基质蛋白质类聚合酶链反应免疫组织化学

胃癌腹腔灌洗液中免疫球蛋白黏蛋白1mRNA对预测腹膜转移的意义

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中华普外科手术学杂志（电子版） 2011年第4期5卷 21-24,34页

作者：王秋爽孙华文吴冲谭海燕武汉大学人民医院胃肠外科 430060

目的研究T细胞免疫球蛋白黏蛋白1(Tim-1)mRNA在胃癌患者腹腔灌洗液中的表达与其临床意义,探讨预测胃癌腹膜转移的方法。方法收集128例胃癌患者及12例良性病变患者的腹腔冲洗液作为对照组。采用实时定量RT-PCR法检测128例胃癌患者腹腔灌... 详细信息

目的研究T细胞免疫球蛋白黏蛋白1(Tim-1)mRNA在胃癌患者腹腔灌洗液中的表达与其临床意义,探讨预测胃癌腹膜转移的方法。方法收集128例胃癌患者及12例良性病变患者的腹腔冲洗液作为对照组。采用实时定量RT-PCR法检测128例胃癌患者腹腔灌洗液中Tim-1mRNA的表达情况,术后随访半年至3年,根据超声,CT,MRI,或术中的诊断,明确腹膜转移的发生及时间。分析Tim-1mRNA与临床各病理参数关系及出现胃癌腹膜转移时间的关系,统计学分析。结果 128例患者中,57例(44.5%)术后出现腹膜转移,分为4组分析:术后半年出现腹膜转移23例(术后半年组),术后2～3年出现腹膜转移34例(术后2～3年组),术后无腹膜转移组71例及对照组12例。术后半年组Tim-1mRNA表达明显高于术后2～3年组,差异有统计学意义(P0.05)。在肿瘤直径≥4cm、低分化、有淋巴结转移、浸润深度T3+T4期、TNM分期Ⅲ+Ⅳ期Tim-1mRNA为高表达,组间差异均有统计学意义(P<0.05)。结论 Tim-1mRNA在胃癌患者腹腔灌洗液中的表达与肿瘤的侵袭转移密切相关,可以作为预测胃癌腹膜转移的方法,Tim-1mRNA表达的高低对胃癌术后腹膜转移的早期和晚期预测有一定的临床意义,优于腹腔灌洗液脱落细胞学的检查。

关键词：逆转录聚合酶链反应胃肿瘤腹腔灌洗肿瘤转移 T细胞免疫球蛋白黏蛋白1

Dinuclear Nickel(Ⅱ) Chlorides Bearing N,N′-bis(5,6,7-trihydroquinolin-8-ylidene)-[1,1′-biphenyl]-4,4′-diamines: Synthesis and Ethylene Polymerization

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Chinese Journal of Polymer Science 2018年第2期36卷 207-213页

作者： Yan-Ning Zeng Qi-Feng Xing Yan-Ping Ma wen-hua sun Laboratory of Engineering Plastics Beijing National Laboratory for Molecular Sciences Institute of Chemistry Chinese Academy of Sciences

5,6,7-Trihydroquinolin-8-one was condensed with the corresponding benzidine to give N,N′-bis（5,6,7-trihydroquinolin-8-ylidene）-[1,1′-biphenyl]-4,4′-diamine derivatives（L1–L3）. The ligands were reacted with two equivalents of Ni Cl2·6H2O in a mixture of Et OH and CH2Cl2 to afford the corresponding dinickel（II） chloride complexes（Ni1-Ni3）. The organic compounds were completely characterized, whilst the bi-metallic complexes were characterized by FTIR spectra and elemental analysis. These nickel complexes exhibited high activities towards ethylene polymerization in the presence of either MAO or Me2AlCl, maintaining a high activity over a prolonged period. The obtained polyethylenes were confirmed as having low molecular weights by GPC analysis.

关键词： Dinuclear nickel complexes Ethylene polymerization Molecular weight Molecular weight distribution

Synthesis of Tetrahydrofuran and Tetrahydropyran Derivatives Catalyzed by Tungstophosphoric Acid in Ionic Liquid

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Chinese Chemical Letters 2005年第9期16卷 1155-1157页

作者： wen PEI Li sun Chun hua XIONG Chen SHEN College of Chemical Engineering and Materials Zhejiang University of Technology Hangzhou 310014 College of Food Science Biotechnolegy and Environmental Engingeering Zhejiang Gongshang University Hangzhou 310035

Synthesis of tetrahydrofuran and tetrahydropyran derivatives catalyzed by tungstophosphoric acid （H3PW12040） were conveniently performed with high yield from the corresponding unsaturated alcohols in ionic liquid. Sufuric acid （H2SO4）, trifluoromathanesulfonic acid （TfOH） and p-toluenesulfonic acid （TsOH） were also explored for preparing these products in ionic liquid. The catalysts and ionic liquid can be easily recovered and reused.

关键词： Tetrahydrofuran and tetrahydropyran derivatives tungstophosphoric acid ionic liquid catalyst synthesis

Investigation of Work Hardening Behavior of Inconel X-750 Alloy

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Acta Metallurgica Sinica(English Letters) 2017年第9期30卷 869-877页

作者： Pei-Tao hua Wei-Hong Zhang Lin-Jie huan wen-Ru sun Superalloys Division Institute of Metal Research ChineseAcademy of Sciences 110016 Shenyang China University of Chinese Academy of Sciences 100049 BeijingChina

The constant strain rate uniaxial compression tests were conducted in this paper for studying the work hardening behavior and revealing the underlying microstructure evolution involved in the plastic response of the nickel-based Inconel X-750 alloy. The work hardening rate versus true strain plots of Inconel X-750 alloy resembled that of low-stacking-fault energy （SFE） alloys with distinct four stages. The dislocations were found in the planar arrangements at a strain of 0.1 located at the onset of stage II, and the dislocation density was increased and the planar arrangement configuration was partially destroyed at a strain of 0.36 located in stage III. It was unexpected that deformation twins were observed at a strain of 0.69 located in stage IV although the alloy has been classified into materials with a higher SFE value. The result is different with a similar study, in which the deformation twins were absent in Ni-Cr-based alloy Inconel 625 even when the strain was as high as 0.65. It was deemed that the low level of solution strengthening favored the deformation of matrix and the activation of slip system for twining in Inconel X-750 alloy. Unlike the low-SFE alloys that the twins were always formed at the end of stage Ⅰ, the higher SFE delayed the twin formation to stage IV for Inconel X-750 alloy. The well- developed planar dislocation configuration gave rise to the stage Ⅱ with a slightly decreasing rate, the collapse of planar dislocation arrangements caused the occurrence of stage Ⅲ with an accelerated decreasing rate, and the twin formation led to the stage IV with a nearly constant work hardening rate.

关键词： Inconei X-750 alloy Work hardening behavior Planar dislocation arrangement Deformationtwins

Improved certificateless multi-proxy signature

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The Journal of China Universities of Posts and Telecommunications 2012年第4期19卷 94-105,116页

作者： XU Jie sun Hong-xiang wen Qiao-yan ZHANG hua School of Science Beijing University of Posts and Telecommunications Beijing 100876 China State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications Beijing 100876 China

Multi-proxy signature is a scheme that an original signer delegates his or her signing capability to a proxy group. In the scheme, only the cooperation of all proxy signers in the proxy group can create a signature on behalf of the original signer. Jin and wen firstly defined the formal security model of certificateless multi-proxy signature （CLMPS） and proposed a concrete CLMPS scheme. However, their construction model is inaccurate, the concrete signature scheme has has three problems： the definition of the strengthened security a security flaw, and the proof of the security is imperfect. With further consideration, a remedial strengthened security model is redefined, and an improved scheme is also proposed, which is existentially unforgeable against adaptively chosen-warrant, chosen-message and chosen-identity attacks in the random oracles. In this condition, the computational Diffie-Hellman （CDH） assumption is used to prove full security for our CLMPS scheme.

关键词： certificateless multi-proxy signature provable security bilinear map

Triphenylphosphine as Reducing Agent for Copper(II)-catalyzed AGET ATRP

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Chinese Journal of Polymer Science 2015年第9期33卷 1260-1270页

作者：柏良久 wen-xiang Wang Ming-hua Wang Jin-ming sun 陈厚 School of Chemistry and Materials Science Ludong University

Triphenylphosphine （TPP） was used as reducing agent to continuously generate the Cu（I） activator in copper（II）- catalyzed activators generated by electron transfer atom transfer radical polymerization （AGET ATRP）. For example, the polymers prepared with a molar ratio of [MMA]0/[EBiB]0/[CuC12]o/[PMDETA]0/[TPP]o = 500/1/0.1/0.5/0.5 had controlled molecular weights and low molecular weight distribution （Mw/Mn） values （-1.2）. TPP as a commercial reducing agent provides a convenient copper-catalyzed AGET ATRP procedure for the preparation of well-defined polymers.

关键词： ATRP AGET ATRP Reducing agent Triphenylphosphine (TPP).

Optoelectronic platform and technology

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Frontiers of Information Technology & Electronic Engineering 2019年第4期20卷 439-457页

作者： wen-hua SHI Wei-ming LV Tian-yu sun Bao-shun ZHANG Suzhou Institute of Nano-Tech and Nano-Bionics Chinese Academy of Sciences

Optoelectronic technology is a new technology formed by the combination of photon technology and electronic technology. Photon technology can cause an industrial revolution that supersedes electronic technology, because it will have a deeper impact on industry and society. We review the development of optoelectronic devices and integration technologies. We compare and analyze the development and characteristics of optoelectronic technology platforms, summarize the key manufacturing technologies, introduce several representative optoelectronic devices including flexible devices, and focus on the key breakthrough technologies that need to be achieved. Through a comprehensive review of the development of optoelectronic technology, China should seize the opportunity for a transformation of the optoelectronic technology industry. By drawing on the experiences with advanced optoelectronic platforms and technologies in foreign countries, we should speed up the accumulation and reserves of Chinese industrial talents, pay attention to the accumulation of basic technology, and establish a national optoelectronic technology platform, to greatly enhance domestic levels in these regards and to achieve independent innovations with these devices.

关键词： Optoelectronic technology Optoelectronic platform Process technology Development and challenges