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七年陶造上海当代艺术之魂

商业周刊（中文版） 2019年第23期 62-64,66页

作者： py 不详

2013年,首届上海廿一当代艺术博览会(ART021,以下简称ART021)在外滩中实大厦举行的时候,选择以“小而精”的规模,以支持新锐画廊、青年艺术家的定位,连同29家画廊在2013年11月27日(周三)至12月1日将上海公众对于艺术的理解与认识,从过... 详细信息

2013年,首届上海廿一当代艺术博览会(ART021,以下简称ART021)在外滩中实大厦举行的时候,选择以“小而精”的规模,以支持新锐画廊、青年艺术家的定位,连同29家画廊在2013年11月27日(周三)至12月1日将上海公众对于艺术的理解与认识,从过往行之有年的上海艺术博览会(1997年成立)以及上海艺术博览会国际当代艺术展(ShContemporary,2007年成立,2012年为最后一届)经年阐述“何为当代艺术”的景观中转移,进而聚焦于当下时代环境中正在发生或者关注的艺术生产.

关键词：当代艺术展小而精 ART 理解与认识博览会

New ZnCe catalyst encapsulated in SBA-15 in the production of 1,3-butadiene from ethanol

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Chinese Chemical Letters 2020年第2期31卷 535-538页

作者： Yujun Zhao Sijia Li zheng Wang Shengnian Wang Shengping Wang Xinbin Ma Key Laboratory for Green Chemical Technology of Ministry of Education.Collaborative Innovation Center of Chemical Science and Engineering School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072China Chemical Engineering Institute for MicromanufacturingLouisiana Tech UniversityRustonLA 71272United States

ZnO-CeO2/SBA-15 catalysts were prepared by two kinds of solid-state grinding method and used for the production of 1,3-butadiene(1,3-BD) from ethanol.A mixture of SBA-15(with or without organic template) and metal precursors were ground in *** obtained catalysts were characterized by TG,N2 adsorption-desorption,TEM,XRD,py-FTIR and NH_3-TPD *** dispersion of metal oxides and more exposed acid sites were achieved on the catalyst lOZn_1Ce_5-AS with the presence of organic template in SBA-15 during the solid-state grinding *** catalytic performance was evaluated in a fixed-bed reactor and a 1,3-butadiene selectivity of as high as 45% is *** is attributed to the coupling effect of Zn and Ce species in the mesopores of SBA-15,in which Zn promotes ethanol dehydrogenation and Ce enhances aldol-condensation,***,solvent-free method inspires new catalyst synthesis strategy for the production of 1,3-butadiene from ethanol.

关键词： 1,3-Butadiene Ethanol SBA-15 Dehydrogenation Aldol-condensation

MicroRNA targets the ecdysone signaling pathway E75 gene to control larval-pupal development in Bactrocera dorsalis

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Insect Science 2019年第2期26卷 229-239页

作者： Wei Peng Wei-Wei zheng Kaleem Tariq Shu-Ning Yu Hong-Yu Zhang Key laboratory of Horticultural Plant Biology (MOE) and Institute of Urban and Horticultural Entomology College of Plant Science and Technology Huazhong Agricultural University Wuhan China Department of Agriculture Abdul Wali Khan University Mardan Khyber Pakhtunkhwa Pakistan

MicroRNAs (miRNAs) regulate various biological processes during insect developme nt;however, their role in larval-pupal development in oriental fruit fly, Bactrocera dorsalis (Hendel) remains unknown. In the current study, we address the biological function of a conserved miRNA, Bdo-Let-7 in the regulation of BdE75 gene, which belongs to the ecdysone signaling pathway and participates in the larval-pupal development in B. dorsalis. Using dual luciferase reporter assay in HEK293T cells we show that Bdo-Let-7 miRNA interacts with the 3' untranslated region of BdE75 gene and suppresses its expression. The Bdo-Let?7 and BdE75 are also co-expressed in the larval-pupal stages and in different tissues of B. dorsalis .In in vivo experiments, the injectio n of Bdo-Let-7 agomir and antagomir in third instar larvae down- and up-regulated the expression of BdE75、 respectively. The 20-hydroxyecdysone (20E) injection assay shows that 20E up-regulated the expression of Bdo-Let-7 on the 5th day of the larvae. Moreover, abnormal pupation and eclosion were observed after larval Bdo-Let-7 antagomir injection. Based on these results, we show that Bdo-Let-7 regulates the ecdysone signaling pathway through the exact dose of BdE75 gene, and is indispensable for normal larval-pupal development in B. dorsalis.

关键词： Bactrocera dorsalis BdE75 Bdo-Let-7 ecdysone signaling pathway

Self-cross-linked arrays enabled flexible mechanical sensors for monitoring the body tremor

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npj Flexible Electronics 2020年第1期4卷 73-81页

作者： Xuewen Wang Wei Fu Guanhui Gao Mandeep Singh Mehay Lu zheng Hong Wang Wu Zhao Kian Ping Loh Ting Zhang Wei Huang zheng Liu Frontiers Science Center for Flexible Electronics(FSCFE)&Shaanxi Institute of Flexible Electronics(SIFE) Northwestern Polytechnical University127 West Youyi RoadXi’an 710072China MIIT Key Laboratory of Flexible Electronics(KLoFE) Northwestern Polytechnical University127 West Youyi RoadXi’an 710072China Department of Chemistry and Centre for Advanced 2D Materials National University of Singapore3 Science Drive 3117543 SingaporeSingapore Paul-Drude-Institut für Festkörperelektronik LeibnizInstitut im Forschungsverbund BerlinHausvogteiplatz 5-7Berlin 10117Germany School of Materials Science and Engineering Nanyang Technological University50 Nanyang AvenueSingapore 640260Singapore Institute of Biomedical Materials and Engineering(IBME) Northwestern Polytechnical University127 West Youyi RoadXi’an 710072China School of Information Science and Technology Northwest UniversityXi’an 710069China i-Lab Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China Centre for Micro-/Nano-electronics(NOVITAS) School of Electrical and Electronic EngineeringNanyang Technological UniversitySingapore 639798Singapore

Thin-film electronics played an important role in flexible healthcare sensor *** common status of their constituent blocks are solid film and network ***,the solid film could only sustain bend in a narrow range due to cracks,and the network structure decreased the sensitivity of flexion sensors due to the strong interactions between *** materials and technologies are urgently required for flexible sensing electronics,to produce the reliable data for assessment of the human ***,we report on a novel three-dimensional(3D)carbon nanorods array(CNA)that is characterized as vertically aligned nanorods and self-cross-linked *** also demonstrate the CNA-based flexible healthcare sensors in monitoring the Parkinsonian *** with two-dimensional(2D)carbon nanotube networks and solid thin films,such self-cross-linked geometries are highly resistant to crack and fragmentation under *** the meantime,it shows high sensitivity and good stability(~10,000 times)to detect the *** CNA-based flexible devices are capable of recording low-frequency vibrations(<6 Hz)and make it excellent to monitor the rest tremor of the human body,which is an initial symptom of Parkinson’s *** 3D self-cross-linked CNA film shows great potential in the fabrication of cost-effective and durable flexible sensors for early diagnosis of disease by monitoring the health-related rest tremors.

关键词： nanowires film network

Pedestrian attribute classification with multi-scale and multi-label convolutional neural networks

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High Technology Letters 2018年第1期24卷 53-61页

作者：朱建清 Zeng Huanqiang Zhang Yuzhao zheng Lixin Cai Canhui Fujian Academic Engineering Research Centre in Industrial Intellectual Techniques and Systems College of Engineering Huaqiao University Quanzhou 362021 P. R. China School of Information Science and Engineering Huaqiao University Xiamen 361021 P. R. China

Pedestrian attribute classification from a pedestrian image captured in surveillance scenarios is challenging due to diverse clothing appearances,varied poses and different camera views. A multiscale and multi-label convolutional neural network( MSMLCNN) is proposed to predict multiple pedestrian attributes simultaneously. The pedestrian attribute classification problem is firstly transformed into a multi-label problem including multiple binary attributes needed to be classified. Then,the multi-label problem is solved by fully connecting all binary attributes to multi-scale features with logistic regression functions. Moreover,the multi-scale features are obtained by concatenating those featured maps produced from multiple pooling layers of the MSMLCNN at different scales. Extensive experiment results show that the proposed MSMLCNN outperforms state-of-the-art pedestrian attribute classification methods with a large margin.

关键词： pedestrian attribute classification multi-scale features multi-label classification convolutional neural network (CNN)

Early embryonic transcriptomes of Zeugodacus tau provide insight into sex determination and differentiation genes

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Insect Science 2022年第3期29卷 915-931页

作者： Peipei Liu Wenping zheng Jiao Qiao Ziniu Li Zhurong Deng Yimin Yuan Hongyu Zhang Key Laboratory of Horticultural Plant Biology(MOE) Hubei Hongshan LaboratoryChina-Australia Joint Research Center for Horticultural and Urban PestsInstitute of Urban and Horticultural EntomologyCollege of Plant Science and TechnologyHuazhong Agricultural UniversityWuhanChina College of Environmental Design Wuhan Institute of Design and SciencesWuhanChina

Zeugodacus tau(Walker)is an invasive *** sterile insect technique is an environment-friendly method for pest *** the mechanism of sex determination will contribute to improving efficiency of this *** this study,we identified the transformer(tra)gene in *** female-specific and two male-specific isoforms of tra were found in ***,and the male-specific splicing pattern of tra was found to occur 5 h after egg *** performed transcriptome sequencing at 1 h(E1),5 h(E5),and 9 h(E9)after egg laying and obtained high-quality transcriptome libraries of early embryo *** identified 13297 and 11713 differentially expressed genes(DEGs)from E5 versus E1 and E9 versus E1 comparisons,*** explore the potential functions of the DEGs during embryonic development,Gene Ontology,Clusters of Orthologous Groups of proteins,and Kyoto Encyclopedia of Genes and Genomes analyses were ***-six genes potentially involved in sex determination or differentiation,including Maleness-on-the-Y(MoY),were identified in *** verify the transcriptome results,15 genes were selected for quantitative real-time PCR *** results were consistent with the transcriptome sequencing ***,U2 small nuclear riboprotein auxiliary factor(U2AF-50),female lethal d(fl(2)d),and virilizer(vir)were highly expressed at E5,indicating that they may be related to the sex-specific splicing of *** functional analysis is needed to confirm this *** data provide an insight into the mechanism underlying sex determination and differentiation in tephritid species.

关键词： RNA-Seq sex determination sex differentiation transformer Zeugodacus tau

PTEN and PDCD4 are Bona Fide Targets of microRNA-21 in Human Cholangiocarcinoma

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Chinese Medical Sciences Journal 2012年第2期27卷 65-72页

作者： Chang-zheng Liu Wei Liu Yi zheng Jin-mei Su Jing--jing Li Lan Yu Xiao-dong He Song-sen Chen Department of Biochemistry National Laboratory of Medical Molecular Biology Institute of Basic Medical Sciences Chinese Academy of Medical Sciences & Peking Union Medical College Beijing 100005 China Department of General Surgery Department of Rheumatology Peking Union Medical College Hospital Chinese Academy of Medical Sciences & Peking Union Medical College Beijing 100730 China

Objective To investigate the expression profile of microRNA-21 in human cholangiocarcinoma tis- sues and to validate its bona fide targets in human cholangiocarcinoma cells. Methods The expression profile of microRNA-21 in human cholangiocarcinoma tissues and cholan- giocarcinoma cell line, QBC939, was evaluated by using real-time PCR analysis. The bona fide targets of microRNA-21 were analyzed and confirmed by dual luciferase reporter gene assay and western blot, respec- tively. The expressional correlation of microRNA-21 and its targets was probed in human cholangiocarci- noma tissues by using real-time PCR, locked nucleic acid in situ hybridization （LNA-ISH）, and immunohis- tochemistry analysis. Results Real-time PCR analysis revealed that microRNA-21 expression depicted a significant up-regulation in human cholangiocarcinoma tissues about 5.6-fold as compared to the matched normal bileduct tissues （P〈0.05）. The dual luciferase reporter gene assay revealed endogenous microRNA-21 in cholan- giocarcinoma cell line, QBC939, inhibited the luciferase reporter activities of wild-type PTEN （P〈0.01） and PDCD4 （P〈0.05） and had no this effect on mutated PTEN and PDCD4. Moreover, loss of microRNA-21 function led to a significant increase of PTEN and PDCD4 protein levels in QBC939 cells. Elevated microRNA-21 levels were accompanied by marked reductions of PTEN and PDCD4 expression in the same cholangiocarcinoma tissue. Conclusion microRNA-21 expression is up PDCD4 are direct effectors of microRNA-21. regulated in human cholangiocarcinoma and PTEN,

关键词： cholangiocarcinoma microRNA-21 phosphatase and tensin homolog programmed cell death 4

Synthesis and Crystal Structure of a New One-dimensional Zn(II) Nitronyl Nitroxide Complex Bridged by pyridine-2,4-dicarboxylate Anion

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Chinese Journal of Structural Chemistry 2006年第6期25卷 735-739页

作者： GAO Dong-Zhao LI Li-Cun LIAO Dai-zheng JIANG Zong-Hui YAN Shi-Ping Department of Chemistry Nankai University Tianjin 300071 China State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter The Chinese Academy of Sciences Fuzhou 350002 China

A new one-dimensional （1-D） Zn（Ⅱ） nitronyl nitroxide complex bridged by pyridine-2,4-dicarboxylate anion, [Zn（NIT4py）（2,4-PDA）（H2O）2], （NIT4py = 2-（4′-pyridyl）-4,4,5,5- tetramethylimidazoline-1-oxyl-3-oxide and 2,4-PDA = pyridine-2,4-dicarboxylate anion）, has been synthesized and structurally characterized by X-ray diffraction. It crystallizes in monoclinic, space group P21/c with a = 16.834（2）, b = 7.4376（10）, c = 18.295（3） A, β = 102.848（2）°, V = 2233.2（5） A^3, C19H23N4O3Zn, Mr = 500.78, Dc = 1.489 g/cm^3,μ（MoKa） = 1.152 mm^-1, F（000） = 1036, Z = 4, the final R = 0.0390 and wR = 0.0915 for 3234 observed reflections. In the complex, each zinc（Ⅱ） ion is six-coordinated by one nitrogen atom of the radical ligand （NIT4py）, one nitrogen atom and two oxygen atoms of two 2,4-PDA anions and two oxygen atoms of two water molecules. Each 2,4-PDA anion bridges two Zn（Ⅱ） ions via a tridentate mode into a 1-D chain, and these 1-D chains are further linked into a 2-D network via hydrogen-bonding interactions.

关键词： zinc(Ⅱ) complex nitronyl nitroxide radical crystal structure pyridine-2,4-dicarboxylic acid

MCM-22 zeolite-based system to produce jet fuel from the 1-hexene oligomerization

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Carbon Resources Conversion 2024年第1期7卷 71-78页

作者： Hao Yang Qi Zuo Xin Ning Jiajun zheng Wenlin Li Ruifeng Li College of Chemical Engineering and Technology Taiyuan University of TechnologyTaiyuanShanxi 030024China

The oligomerization of light olefins is an alternative for generating clean liquid *** this study,the MCM-22 zeolite featuring a partially disordered layered structure with framework combined 10 membered ring(10 MR)was discussed for 1-hexene ***-22 and Y zeolite were compared to investigate the influences of the framework and acidity strength on the activity and yield in the 1-hexene *** results indicated that the MCM-22 zeolite was an efficient catalyst for oligomerization compared to Y *** MCM-22 zeolite was characterized in detail by NMR,py-FTIR,and TG *** catalytic performance and deactivation properties of MCM-22 zeolite in the oligomerization reaction of 1-hexene were ***-activity relationships were established through the kinetic *** the density of strong acid sites was essential for the oligomerization of 1-hexene,the presence of low pressure was also necessary for the formation of ***,MCM-22 zeolite demonstrates a substantial improvement in initial conversion and catalyst lifespan for 1-hexene oligomerization.

关键词： Jet fuels Oligomerization Zeolites MCM-22 Reaction order