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An Efficient Palladium-catalyzed Coupling Reaction for the Preparation of Biaryls and Polyaryls

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Chinese Chemical Letters 2003年第1期14卷 13-16页

作者： Zhi Yong WANG zheng gen zha Jia Hai zhaNG Ji Hui WU Department of Chemistry University of Science and Technology of ChinaHefei 230026

In the case of Pd(PPh3)4 as catalyst and toluene as reaction solvent, the desired biaryls and polyaryls were synthesized in excellent yield and on a large scale.

关键词： Palladium-catalyst coupling reaction preparation biaryl polyaryl.

Decarboxylative bromination of α,β-unsaturated carboxylic acids via an anodic oxidation

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Chinese Chemical Letters 2017年第6期28卷 1159-1162页

作者： Mei-Xiang Bi Peng Qian Yu-Kang Wang zheng-gen zha Zhi-Yong Wang Hefei National Laboratory for Physical Sciences at Microscale CAS Key Laboratory of Soft Matter Chemistry and Department of Chemistry & Collaborative Innovation Center of Suzhou Nano Science and TechnologyUniversity of Science and Technology of ChinaHefei 230026 China

A novel bromination of α,β-unsaturated carboxylic acids was developed via a decarboxylation by virtue of a direct anodic *** this method,ammonium bromide was employed as a bromine source and the reaction features tr... 详细信息

关键词： Decarboxylative bromination α β-Unsaturated carboxylic acids Ammonium bromide Anodic oxidation Electro-oxidation

Electrosynthesis of oxadiazoles from benzoylhydrazines

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Chinese Chemical Letters 2013年第9期24卷 780-782页

作者： Huan-Yue Ma zheng-gen zha Zhen-Lei zhang Li Meng Zhi-Yong Wang Hefei National Laboratory for Physical Sciences at Microscale CAS Key Laboratory of Soft Matter Chemistry and Department of Chemistry Hefei National Laboratory for Physical Sciences at Microscale and Department of Modern Physics University of Science and Technology of China

A highly efficient conformation from facile benzoylhydrazines was developed under electrochemical condition. A variety of oxadiazoles were obtained with good yields by virtue of this new method.

关键词： Oxadiazoles Electrochemical reactions Steric effect

A review of artificial intelligence applications in high-speed railway systems

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High-Speed Railway 2024年第1期2卷 11-16页

作者： Xuehan Li Minghao Zhu Boyang zhang Xiaoxuan Wang zha Liu Liang Han School of Electronic and Information Engineering Beijing Jiaotong UniversityBeijing 100044China School of Economics and Management Beijing Jiaotong UniversityBeijing 100044China Business School of Hunan University Changsha 410082China

In recent years,the global surge of High-speed Railway(HSR)revolutionized ground transportation,providing secure,comfortable,and punctual *** next-gen HSR,fueled by emerging services like video surveillance,emergency communication,and real-time scheduling,demands advanced capabilities in real-time perception,automated driving,and digitized services,which accelerate the integration and application of Artificial Intelligence(AI)in the HSR *** paper first provides a brief overview of AI,covering its origin,evolution,and breakthrough applications.A comprehensive review is then given regarding the most advanced AI technologies and applications in three macro application domains of the HSR system:mechanical manufacturing and electrical control,communication and signal control,and transportation *** literature is categorized and compared across nine application directions labeled as intelligent manufacturing of trains and key components,forecast of railroad maintenance,optimization of energy consumption in railroads and trains,communication security,communication dependability,channel modeling and estimation,passenger scheduling,traffic flow forecasting,high-speed railway smart ***,challenges associated with the application of AI are discussed,offering insights for future research directions.

关键词： High-speed railway Artificial intelligence Intelligent distribution Intelligent control Intelligent scheduling

Cathepsin B protease is required for metamorphism in silkworm, Bombyx moil

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Insect Science 2008年第3期15卷 201-208页

作者： gen-Hong Wang Chun Liu Qing-You Xia Xing-Fu zha Jie Chen Liang Jiang Key Sericultural Laboratory of the Agricultural Ministry College of Biotechnology Southwest University Chongqing China

Cathepsin B belongs to lysosomal cysteine protease of the papain family. Temporal and spatial expression analysis of cathepsin B of Bombyx mori （BmCtB） was carried out based on Expression Sequence Tags （ESTs） data, oligonucleotide microarray, reverse transcription polymerase chain reaction （RT-PCR） and quantitative real-time PCR. Expression of BmCtB was observed in all of the tissues and stages. Among the 10 tested tissues, the fat body and posterior silk gland are the two most enriched tissues with BmCtB. During Bombyx development, there was an expression fastigium of BmCtB during metamorphosis. RNA interference was used to suppress the expression of cathepsin B during metamorphosis. Significant developmental defective phenotypes were obtained in the RNAi treated group. The dramatically reduced expression of BmCtB was con^rmed by Northern blot and quantitative real-time PCR. These evidences strongly suggest cathepsin B proteinase was predominantly involved in the metabolism process of fat body and the posterior silk gland and was critical for metamorphism and development of silkworm, Bombyx mori.

关键词： cathepsin B RNA interference quantitative real-time PCR Bombyx mori

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全膝关节置换术多用途挡板设计与应用

中国矫形外科杂志 2024年第6期32卷 557-560页

作者：袁札根卿勇孙淑梅李治敏苏展影李泽晖陈瑞娟曹学伟广东省中医院广东广州510120

[目的]介绍全膝关节置换术(total knee arthroplasty,TKA)多用途挡板设计与应用技术和初步临床结果。[方法]本多用途挡板结构包括相互连接的挡板、手柄与负压吸气器。挡板上设有圆形通透窗口、圆形通透窗口通道、矩形通透窗口。矩形通... 详细信息

[目的]介绍全膝关节置换术(total knee arthroplasty,TKA)多用途挡板设计与应用技术和初步临床结果。[方法]本多用途挡板结构包括相互连接的挡板、手柄与负压吸气器。挡板上设有圆形通透窗口、圆形通透窗口通道、矩形通透窗口。矩形通透窗口设置在挡板顶边的中部,圆形通透窗口设置在挡板的几何中心位置的一侧。手柄与挡板的下部连接;负压吸气器与手柄连接在挡板的下部,其前端开口延伸到挡板的中部形成吸气口,其后端开口连接外部负压抽气管道,将靠近挡板或附着在挡板表面上的血液、碎屑吸出。[结果]86例TKA患者术中应用多用途挡板,高效遮挡了飞溅的血液和碎骨渣,大大降低手术感染率,有效保护医护人员从而预防血源性职业暴露。86例患者均顺利完成手术,术后手术切口愈合良好。膝关节功能恢复良好,随访过程中未出现感染等严重并发症。[结论]本多用途挡板遮挡并吸附TKA手术过程中飞溅的血液和碎骨渣等污染物,降低了感染率,减少对医务人员的污染和伤害。

关键词：多用途挡板全膝关节置换术感染率职业暴露

若干1,1,2,2-四乙酰基乙烷阴离子(TAE^(2-))桥联的联吡啶双核铜配合物的合成,结构和磁性

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无机化学学报 1999年第5期15卷 641-647页

作者：沈小平邹建忠查正根徐正 YipBoonChuan FunHoongKunc 南京大学配位化学研究所东南大学化学化工系南京210096 cSchoolofPhysics

合成了２个以１，１，２，２四乙酰基乙烷阴离子（ＴＡＥ２－）为桥联的双核铜配合物［（ｂｉｐｙＣｕ）（ｂｉｐｙ ＣｕＨ２Ｏ）ＴＡＥ］（ＣｌＯ４）２ ·２Ｈ２Ｏ（ Ⅰ）和（ｂｉｐｙＣｕ）２ＴＡＥ（ ... 详细信息

合成了２个以１，１，２，２四乙酰基乙烷阴离子（ＴＡＥ２－）为桥联的双核铜配合物［（ｂｉｐｙＣｕ）（ｂｉｐｙ ＣｕＨ２Ｏ）ＴＡＥ］（ＣｌＯ４）２ ·２Ｈ２Ｏ（ Ⅰ）和（ｂｉｐｙＣｕ）２ＴＡＥ（ＰＦ６）２ ·３Ｈ２Ｏ（ Ⅱ）及１个多核铜配合物［ＣｕＴＡＥ·２Ｈ２Ｏ］ｎ（ Ⅲ），并进行了表征。对配合物（ Ⅰ）进行了Ｘ射线晶体结构分析，该配合物属于单斜晶系，空间群为Ｐ２１／ｎ，晶胞参数为ａ＝７．９２３（１）．４６５（５）〓，ｂ＝１６．０６８（３）〓，ｃ＝３０．１８２（７）〓， β＝９３．１８（２）°，晶胞体积Ｖ＝３８３６．５（１２）〓３，Ｚ＝４，最终偏离因子Ｒ１＝０．１１３５，ｗＲ２＝０．３１２１。磁性质研究表明在这两个双核铜配合物中两个金属铜之间存在弱的反铁磁性相互作用。

关键词： TAE^2- 磁相互作用铜配合物结构磁性双核

1,1,2,2-四乙酰基乙烷阴离子(TAE^(2-))桥联的邻菲咯啉双核铜配合物的合成结构和磁性

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无机化学学报 1999年第6期15卷 793-797页

作者：沈小平邹建忠查正根段春迎徐正南京大学配位化学研究所东南大学化学化工系南京210096

合成了两个以１，１，２，２－四乙酰基乙烷阴离子（ＴＡＥ２－）为桥联的双核铜配合物（Ｃｕｐｈｅｎ）２ＴＡＥ（ＣｌＯ４）２·４Ｈ２Ｏ（Ⅰ）和［（ｐｈｅｎＣｕ）（ｐｈｅｎＣｕＣｌ）ＴＡＥ］（ＣｌＯ４）·４Ｈ２Ｏ（Ⅱ），并... 详细信息

合成了两个以１，１，２，２－四乙酰基乙烷阴离子（ＴＡＥ２－）为桥联的双核铜配合物（Ｃｕｐｈｅｎ）２ＴＡＥ（ＣｌＯ４）２·４Ｈ２Ｏ（Ⅰ）和［（ｐｈｅｎＣｕ）（ｐｈｅｎＣｕＣｌ）ＴＡＥ］（ＣｌＯ４）·４Ｈ２Ｏ（Ⅱ），并进行表征。对配合物（Ⅱ）进行了Ｘ－射线晶体结构分析，该配合物属于单斜晶系，空间群为Ｃ２／ｃ（Ｎｏ．１５），晶胞参数为ａ＝２５．４６５（５），ｂ＝１３．０６４（３），ｃ＝１２．１２５（２），β＝１１０．７２（３）°，晶胞体积Ｖ＝３７７３（２）３，Ｚ＝４，最终偏离因子Ｒ＝０．０７０，Ｒｗ＝０．０７４。

关键词： TAE^2- 邻菲咯啉铜配合物双核磁性质磁交换

综合型有机化学实验:4,4-二苯基-3-丁烯-2-酮的合成、纯化及表征

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化学教育（中英文） 2018年第12期39卷 42-44页

作者：郑媛兰泉查正根中国科学技术大学化学国家级实验教学示范中心

以乙酰乙酸乙酯为原料,利用酮羰基选择性保护及去保护的方法,制备4,4-二苯基-3-丁烯-2-酮。实验涉及无水无氧、减压蒸馏和柱色谱层析等操作。该实验合成路线成熟,产物易于纯化且产率高,结合了分子结构的波谱解析,对于学生有机合成实验... 详细信息

以乙酰乙酸乙酯为原料,利用酮羰基选择性保护及去保护的方法,制备4,4-二苯基-3-丁烯-2-酮。实验涉及无水无氧、减压蒸馏和柱色谱层析等操作。该实验合成路线成熟,产物易于纯化且产率高,结合了分子结构的波谱解析,对于学生有机合成实验能力的培养和加深对波谱理论知识的理解和应用,具有很好的教学效果。

关键词：乙酰乙酸乙酯格氏试剂 4,4-二苯基-3-丁烯-2-酮综合型有机化学实验