检索结果-南通市图书馆

A novel microRNA miR-MTCO3P38 inhibits malignant progression via STAT3/PTTG1/MYC in hepatocellular carcinoma

在线全文

学校读者我要写书评

暂无评论

Genes & Diseases 2022年第4期9卷 845-848页

作者： Deliang guo Yang gu Dong Ma pengpeng Liu Baiyang Chen Zhisu Liu Ping Wu Quanyan Liu Department of Hepatobiliary and Pancreatic Surgery Zhongnan Hospital of Wuhan UniversityWuhanHubei 430071PR China Department of Hepatobiliary and Pancreatic Surgery The First People's Hospital of JingmenJingmenHubei 448000PR China guangzhou Women and Children's Medical Center Guangzhou Medical UniversityGuangzhouGuangdong 510120PR China Department of Hepatobiliary Surgery Tianjin Medical University General HospitalTianjin 300052PR China

To the Editor,Hepatocellular carcinoma(HCC)is a malignant tumor with the fourth highest incidence and the third highest mortality among all tumor sites in China.1 Finding new diagnostic markers and therapeutic molecul... 详细信息

关键词： malignant STAT3 mortality

Organic single-crystal light-emitting transistors with external quantum efficiency over 20%

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Aggregate

Aggregate 2023年第4期4卷 122-127页

作者： Jian Deng Zejian Zhang pengpeng Sang Shujun Yin Shitong Zhang Yuan Li Bing Yang Cheng gu Yuguang Ma State Key Laboratory of Luminescent Materials and Devices Institute of Polymer Optoelectronic Materials and DevicesSouth China University of TechnologyGuangzhouP.R.China School of Information Science and Engineering Shandong UniversityQingdaoP.R.China State Key Laboratory of Supramolecular Structure and Materials Institute of Theoretical ChemistryCollege of ChemistryJilin UniversityChangchunP.R.China guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates South China University of TechnologyGuangzhouP.R.China

Organic light-emitting transistors(OLETs)have attracted increasing attention because of their potential applications in next-generation displays and high-energy operating ***,the simultaneous achievement of high luminescent efficiency and carrier mobility in organic semiconductors remains challenging because the localized excitons are advantageous for light emission,whereas the delocalized carriers are beneficial for efficient charge ***,we report an organic single crystal of a cyano-substituted styrene derivative with balanced mobility yielding a record-high external quantum efficiency of 20.5%in ***-dependent I–V curves and electronic structure analyses based on firstprinciples calculations were performed to disclose the underlying mechanism as a band transport,which provides an efficient way to achieve high quantum efficiency in OLETs.

关键词： organic electronics organic light-emitting transistors single crystals styrene

Cu_(2)O-SupportedAtomicallyDispersed Pd Catalysts for Semihydrogenation of Terminal Alkynes: Critical Role of Oxide Supports

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

CCS Chemistry 2019年第2期1卷 207-214页

作者： Kunlong Liu Ruixuan Qin Lingyun Zhou Pengxin Liu Qinghua Zhang Wentong Jing pengpeng Ruan Lin gu Gang Fu Nanfeng Zheng Collaborative Innovation Center of Chemistry for Energy Materials State Key Laboratory for Physical Chemistry of Solid Surfacesand Department of ChemistryCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China Institute of Physics Chinese Academy of SciencesBeijing 100190China

Atomically dispersed catalysts have demonstrated superior catalytic performance in many chemical ***,limited success has been achieved in applying oxide-supported atomically dis-persed catalysts to semihydrogenation o... 详细信息

关键词： atomically dispersed catalyst support effect palladium semihydrogenation selective hydrogenation alkynes heterolytic activation of hydrogen galvanic displacement

Effects of different ridge-furrow mulching systems on yield and water use efficiency of summer maize in the Loess Plateau of China

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Arid Land 2021年第9期13卷 947-961页

作者： CHEN pengpeng gu Xiaobo LI Yuannong QIAO Linran LI Yupeng FANG Heng YIN Minhua ZHOU Changming Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas of Ministry of Education Northwest A&F UniversityYangling 712100China College of Art and Science Georgia State UniversityAtlanta 30341USA College of Water Conservancy and Hydropower Engineering Gansu Agricultural UniversityLanzhou 730070China College of Land Resources and Environment Jiangxi Agricultural UniversityNanchang 330045China

Ridge-furrow film mulching has been proven to be an effective water-saving and yield-improving planting pattern in arid and semi-arid *** is the main factor limiting the local agricultural production in the Loess Plateau of *** this study,we tried to select a suitable ridge-furrow mulching system to improve this situation.A two-year field experiment of summer maize(Zea mays L.)during the growing seasons of 2017 and 2018 was conducted to systematically analyze the effects of flat planting with no film mulching(CK),ridge-furrow with ridges mulching and furrows bare(RFM),and double ridges and furrows full mulching(DRFFM)on soil temperature,soil water storage(SWS),root growth,aboveground dry matter,water use efficiency(WUE),and grain *** RFM and DRFFM significantly increased soil temperature in ridges,while soil temperature in furrows for RFM and DRFFM was similar to that for *** largest SWS was observed in DRFFM,followed by RFM and CK,with significant differences among *** was lower in ridges than in furrows for *** treatment kept soil water in ridges,resulting in higher SWS in ridges than in furrows after a period of no water *** the two growing seasons,compared with CK,RFM increased root mass by 10.2%and 19.3%at the jointing and filling stages,respectively,and DRFFM increased root mass by 7.9%at the jointing stage but decreased root mass by 6.0%at the filling *** the two growing seasons,root length at the jointing and filling stages was respectively increased by 75.4%and 58.7%in DRFFM,and 20.6%and 30.2%in *** to the jointing stage,the increased proportions of root mass and length at the filling stage were respectively 42.8%and 94.9%in DRFFM,63.2%and 115.1%in CK,and 76.7%and 132.1%in RFM,over the two growing seasons,showing that DRFFM slowed down root growth while RFM promoted root growth at the later growth *** treatment increased root mass and root length in ridges and decreased them in 0-30 cm

关键词： ridge-furrow mulching summer maize soil water storage soil temperature root mass root length

Self-organization of unimolecular micelles in beam stream for functional mesoporous metal oxide nanofibers

在线全文

学校读者我要写书评

暂无评论

Fundamental Research 2022年第5期2卷 776-782页

作者： Chongfei gu Xiaoshan Fan guihua Zhu Yuchi Fan Haifeng Wang Tao Zhao Qi Xiao Yuan Fang Xiaopeng Li Wan Jiang Lianjun Wang pengpeng Qiu Wei Luo State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringInstitute of Functional MaterialsDonghua UniversityShanghai 201620China

The use of linear amphiphilic block copolymers as templates is an important method for the preparation of mesoporous ***,the obtained assemblies are usually sensitive to synthetic conditions,which impedes the preparation of such mesoporous materials in certain ***,we report a universal strategy applying an amphiphilic multiarm triblock copolymer in the preparation of mesoporous metal oxide nanofibers(NFs)using one metal oxide(TiO_(2),ZrO_(2),WO_(3),CeO_(2)),or two(TiO_(2)/WO 3,TiO_(2)/ZrO_(2),TiO_(2)/CeO_(2))and three(TiO_(2)/WO_(3)/CuO)metal oxides as *** template consists of modified β-cyclodextrin as the center of the macromolecule which is attached sequentially to a block of polystyrene,poly(acrylic acid),and poly(ethylene oxide).Under electrospinning conditions,stable unimolecular micelles are formed and effectively co-assemble with metal ions to form fibrous *** indicated by various characterization methods,the synthesized TiO_(2) and its derived composite NFs maintain a straight and continuous fibrous structure after calcination,and TiO_(2) NFs exhibit uniform mesopores of 10.8 nm in diameter and a large Brunauer-Emmett-Teller surface area of 143.3 m^(2)g^(−1).Benefiting from the characteristic structure,still present after modification,Pt-decorated mesoporous TiO_(2) NFs display excellent ability in the visible-light photocatalytic degradation of tetracycline,which is superior to the commercial P25 *** study reveals a promising strategy for the preparation of fibrous mesoporous metal oxides.

关键词： Unimolecular micelles Self-assembly Electrospinning Mesoporous metal oxides Nanofibers

5-28 Interlock of Vacuum Devices in SSC-Linac

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

IMP & HIRFL Annual Report 2014年第1期 238-239页

作者： Liu Xiaojun Zhang Wei gu Kewei An Shi Chang Jianjun Wang pengpeng 不详

The architecture of SSC-Linac vacuum control system is based on EPICS. The interlock of vacuum devices inSSC-Linac was introduced. We use C-RIO as an EPICS IOC to acquire data from vacuum gauges and controlvacuum valves. The software is programmed by *** interlock of vacuum devices is very important for the whole system. If the pressure of the vacuum gauge islarger than the value we preset, the vacuum valve will be pushed in automatically and it can't be operated. If thepressure is smaller than the present value, we can operate the vacuum valve to be in or to be out[1].

关键词： Interlock Vacuum Devices

Characterization of integrons and novel cassette arrays in bacteria from clinical isloates in China,2000-2014

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

The Journal of Biomedical Research 2016年第4期30卷 292-303页

作者： Wenying Xia Ting Xu Tingting Qin pengpeng Liu Yun Liu Haiquan Kang Bing gu Ping Ma Department of Laboratory Medicine the First Affiliated Hospital of Nanjing Medical University National Key Clinical Department of Laboratory Medicine Medical Technology Institute of Xuzhou Medical College Department of Laboratory Medicine Affiliated Hospital of Xuzhou Medical College

Rapid dissemination of antibiotic resistance genes among bacterial isolates is an increasing problem in China. Integron, a conserved DNA sequence, which is carried on episomal genetic structures, plays a very important role in development of antibiotic resistance. This systematic analysis was based on MEDLINE and EMBASE databases. We summarized the distribution and proportion of different types of gene cassette arrays ofintegrons （including class 1, 2, 3 and atypical class 1 integron） from clinical bacteria isolates in China. Fifty-six literatures were included in this study. Most of the strains were Gram-negative bacteria （94.1%, 7,364/7,822） while only 5.9% strains were Gram- positive bacteria. Class 1 integrons were detected in 54.2% （3956/7295） Gram-negative strains, aadA2 was the most popular gene cassette array detected from 60 Gram-positive bacteria while dfrA 17-aadA5 were detected in 426 Gram- negative bacteria. This study identified 12 novel gene cassette arrays which have not been previously found in any species. All the novel gene cassette arrays were detected from Gram-negative bacteria. A regional characteristic of distribution of integrons was presented in this study. The results highlight a need for continuous surveillance of integrons and provide a guide for future research on integron-mediated bacteria resistance.

关键词： integron novel cassette arrays clinical bacteria China

在线全文

学校读者我要写书评

暂无评论

大学生学术英语演讲论证能力发展的个案研究

外语界 2019年第5期 39-47页

作者：冯芃芃龙影谷明樾中山大学外国语学院广东广州510275 香港教育大学英语教育学系香港999077

学术英语演讲中,论证能力是决定演讲质量的关键因素之一。本研究以3名大学生为个案分析对象,探讨他们在学术英语演讲课中论证能力的发展状况及其影响因素。研究发现:学生通过课程训练能在演讲中提供更多的概念定义和推理因素,更频繁使... 详细信息

学术英语演讲中,论证能力是决定演讲质量的关键因素之一。本研究以3名大学生为个案分析对象,探讨他们在学术英语演讲课中论证能力的发展状况及其影响因素。研究发现:学生通过课程训练能在演讲中提供更多的概念定义和推理因素,更频繁使用获取受众认同的策略,有效利用多模态资源;学生的论证能力受到学习经验和特定领域内容知识的影响,课堂教学中的学习支架和互动活动能够促进学生论证能力发展。

关键词：论证能力学术英语演讲个案研究

300MW超临界CO_(2)二次再热燃煤锅炉系统设计

在线全文

学校读者我要写书评

暂无评论

动力工程学报 2022年第3期42卷 197-206,228页

作者：汪洋郑志敏李鹏鹏顾明言安徽工业大学能源与环境学院安徽马鞍山243002

采用一次间冷二次再热和回热的超临界二氧化碳(S-CO_(2))布雷顿循环系统,并基于炉膛分区段传热计算方法,对300MW燃煤锅炉系统进行设计,重点分析了炉膛分区布置对气冷壁和炉膛沿程温度分布以及工质压降的影响。结果表明:在设计负荷下,过... 详细信息

采用一次间冷二次再热和回热的超临界二氧化碳(S-CO_(2))布雷顿循环系统,并基于炉膛分区段传热计算方法,对300MW燃煤锅炉系统进行设计,重点分析了炉膛分区布置对气冷壁和炉膛沿程温度分布以及工质压降的影响。结果表明:在设计负荷下,过热气冷壁高度为炉膛高度的0.71时,沿程烟气温度处于合理范围内,炉膛气冷壁壁面温度具有较宽的安全裕度,并且设计成本相对较低;所提出的S-CO_(2)二次再热燃煤锅炉系统的循环热效率达到51.82%,比同级别的S-CO_(2)一次再热燃煤锅炉提高了1.79%,比同级别常规蒸汽机组高出约11%。

关键词：超临界二氧化碳布雷顿循环燃煤锅炉壁面温度分布