检索结果-南通市图书馆

Synthesis and Characterization of a Novel Compound SnDy2O4

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2002年第6期13卷 587-588页

作者： Yong zhang ke li zhang Man ke JIA Hao TANG Ju Tang SUN liang Jie YUAN College of Chemistry and Molecular science Department of ChemistryWuhan UniversityWuhan 430072

A new phase, the rare earth complex oxide SnDy2O4 was synthesized by the thermal decomposition of its oxalate precursor that was prepared by rheological phase reaction method. TG, IR, XRD and EPS were used to prove the formation of the compound SnDy2O4. The structure of SnDy2O4 was refined by Rietveld analysis. SnDy2O4 is cubic, a = 7.40366 ? V = 405.82 ?, Z = 4.

关键词： Rare earth complex oxide SnDy2O4 rheological phase reaction thermal analysis.

Synthesis and characterization of novel star-shaped pyridine cored compounds with alternating carbazole and triphenylamine moieties

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2008年第6期19卷 647-650页

作者： Ji Bing Yuan Zhi Guo zhang Louis Man Leung ke li zhang College of Chemistry and Molecular Sciences Wuhan University Wuhan 430072 China College of Chemical and Environmental Engineering Hubei University of Technology Wuhan 430068 China Department of Chemistry Hong Kong Baptist University Hongkong China

Amorphous 2,4,6-trissubstituted pyridines containing three peripheral carbazole or two triphenylamine and one carbazole moieties, respectively, have been synthesized and characterized. The properties of the compounds are investigated by UV-vis absorption, photoluminescence spectroscopy, thermal analysis as well as cyclic voltammetry. The results show that the compounds have high thermal stability, emit blue light. Also, the compounds possess the HOMO and LUMO energy levels comparable to those of NPB. The effects of different substituents on the electronic properties of the materials have been discussed.

关键词： Star-shaped Carbazole Tdphenylamine Pyridine

Blind Multiuser Channel Identification Based on Rate Doubling and Modulation-Induced Cyclostationarity

在线全文

学校读者我要写书评

暂无评论

The Journal of China Universities of Posts and Telecommunications 2003年第3期10卷 22-29页

作者： CAO Shi ke, zhang li jun (Nanjing University of Posts and Telecommunications, Nanjing 210003, P.R. China) Nanjing University of Posts and Telecommunications Nanjing 210003

In this paper, a novel approach is put forward to the multiuser channelidentification. The approach makes use of the modulation-induced Cyclostationarity to separate thesecond order cyclic statistics for every user, with the special features of one subspace for oneuser, so as to be able to identify individual channels of different users. In order to form aSingle-Input-Two-Output (SITO) system, the transmission rate is doubled by repeating at thetransmitters. The approach is rather simple, suitable for the multiuser uplink . And the channelidentifiability conditions with its proof are included in the paper, And finally the identificationalgorithm is proposed with simulation results.

关键词： blind channel identification cyclostationarity second-order cyclicstatistics

Cloning and characterization of a novel hepatitis B virus core binding protein C12

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2005年第36期11卷 5666-5671页

作者： Yin-Ying Lu Jun Cheng Yong-Ping Yang Yan liu lin Wang ke li ling-Xia zhang Gene Therapy Research Center Institute of Infectious Diseases The 302 Hospital of PLA 100 Xisihuanzhong Road Beijing 100039 China

AIM： To elucidate the biological function of HBV core antigen （HBcAg） on pathogenesis of hepatitis B, a novel gene C12 coding for protein with unknown function interacting with HBcAg in hepatocytes was identified and characterized. METHODS： HBcAg bait plasmid pGBKT7-HBcAg was constructed and transformed into yeast AH109, then the transformed yeast was mated with yeast Y187 containing liver complementary DNA （cDNA） library plasmid in 2xYPDA medium. Diploid yeast was plated on synthetic dropout nutrient medium （SD/-Trp-Leu-His-Ade） and synthetic dropout nutrient medium （SD/-Trp-Leu-His-Ade） containing X-α-gal for screening twice. After extracting and sequencing of plasmid from blue colonies, we isolated a cDNA clone encoding a novel protein designated as C12 that directly interacted with HBcAg. The interaction between HBcAg and C12 was verified again by re-mating. pEGFP-N1-C12 fluorescent protein fusion gene was transfected in 293 and L02 cell, and observed by fluorescent microscope. M-FI reduction assay was used to study the action of C12 protein effect on metabolism of mammal cell. Yeast two-hybrid and cDNA microarray were performed to search binding protein and differential expression genes regulated by C12 protein. RESULTS： C12 gene was screened and identified by yeast two-hybrid system 3. The interaction between HBcAg and the novel protein coded by the new gene C12 was further confirmed by re-mating. After 48 h, fluorescence of fusion protein could be observed steadily in the 293 and L02 cell plasma. Under MTT assay, we found that the expression of C12 did not influence the growth of liver cells. Seventeen differential expression genes in HepG2 cells transfected with C12 protein expression plasmid by cDNA microarray, of which 16 genes were upregulated and 1 gene was downregulated by C12 protein. Twenty-one colonies containing 16 different genes coding for C12 protein binding proteins were isolated by yeast two-hybrid, there were 2 new genes with unknown function.

关键词： Hepatitis B virus core antigen Yeast two-hybrid cDNA microarray MTT assay

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

斜视手术后屈光状态的变化

国际眼科杂志 2018年第10期18卷 1819-1821页

作者：周文轲张黎重庆医科大学附属第一医院眼科眼科学重庆市重点实验室重庆市眼科研究所中国重庆市400016

斜视是指任何一眼视轴偏离的临床现象,可因双眼单视异常或控制眼球运动的神经肌肉异常或各类机械性限制引起。手术治疗是斜视矫正的重要方法,最初人们的关注点只在眼位,但随着对手术患者逐渐深入地观察及随访,有研究发现斜视手术可能改... 详细信息

斜视是指任何一眼视轴偏离的临床现象,可因双眼单视异常或控制眼球运动的神经肌肉异常或各类机械性限制引起。手术治疗是斜视矫正的重要方法,最初人们的关注点只在眼位,但随着对手术患者逐渐深入地观察及随访,有研究发现斜视手术可能改变眼球原本的屈光状态。本文从斜视手术后受术者屈光状态、眼球参数的改变、其可能的发生机制以及影响因素等作一综述,希望能对斜视手术有更为全面的认识,同时为确定术后验光配镜的理想时间提供依据。

关键词：斜视手术屈光散光

在线全文

学校读者我要写书评

暂无评论

中国石化成品油销售物流问题与对策研究

特区经济 2009年第10期 235-236页

作者：李柯张路武汉理工大学管理学院湖北武汉430070

对中国石化成品油销售物流现状及存在的问题进行了剖析,提出了销售体制改革的思路。结合中国石化成品油物流特点,通过SWOT分析和战略矩阵分析,提出了中国石化成品油销售物流的发展战略以及分阶段实施步骤。

关键词：石化企业成品油销售物流

Stability and Stabilization of Sampled-Data Based LFC for Power Systems:A Data-Driven Method

在线全文

学校读者我要写书评

暂无评论

IEEE/CAA Journal of Automatica Sinica 2025年第1期 291-293页

作者： Yu-Long Fan Chuan-ke zhang Yong He the School of Automation China University of Geosciences the Hubei key Laboratory of Advanced Control and Intelligent Automation for Complex Systems the Engineering Research Center of Intelligent Technology for Geo-Exploration Ministry of Education IEEE

Dear Editor,This letter is concerned with stability analysis and stabilization design for sampled-data based load frequency control(LFC) systems via a data-driven method. By describing the dynamic behavior of LFC systems based on a data-based representation, a stability criterion is derived to obtain the admissible maximum sampling interval(MSI) for a given controller and a design condition of the PI-type controller is further developed to meet the required MSI. Finally, the effectiveness of the proposed methods is verified by a case study.

关键词：

An Unprecedented Efficiency with Approaching 21%Enabled by Additive‑Assisted Layer‑by‑Layer Processing in Organic Solar Cells

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Nano-Micro Letters 2025年第2期17卷 372-375页

作者： Shuai Xu Youdi zhang Yanna Sun Pei Cheng Zhaoyang Yao Ning li Long Ye lijian Zuo ke Gao key Laboratory of Advanced Green Functional Materials College of ChemistryChangchun Normal UniversityChangchun 130032People’s Republic of China Shandong Provincial key Laboratory for Science of Material Creation and Energy Conversion School of Chemistry and Chemical EngineeringShandong UniversityQingdao 266237People’s Republic of China College of Polymer Science and Engineering Sichuan UniversityChengdu 610065People’s Republic of China State key Laboratory and Institute of Elemento‑Organic Chemistry Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer MaterialsRenewable Energy Conversion and Storage Center(RECAST)College of ChemistryNankai UniversityTianjin 300071People’s Republic of China Institute of Polymer Optoelectronic Materials and Devices State key Laboratory of Luminescent Materials and Devices South China University of TechnologyGuangzhou 510640People’s Republic of China Tianjin key Laboratory of Molecular Optoelectronic Sciences School of Materials Science and EngineeringTianjin UniversityTianjin 300350People’s Republic of China State key Laboratory of Silicon Materials MOE Key Laboratory of Macromolecular Synthesis and FunctionalizationDepartment of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China

Recently published in Joule,Feng liu and colleagues from Shanghai Jiaotong University reported a record-breaking 20.8%power conversion efficiency in organic solar cells(OSCs)with an interpenetrating fibril network active layer morphology,featuring a bulk p-in structure and proper vertical segregation achieved through additive-assisted layer-by-layer *** optimized hierarchical gradient fibrillar morphology and optical management synergistically facilitates exciton diffusion,reduces recombination losses,and enhances light capture *** approach not only offers a solution to achieving high-efficiency devices but also demonstrates the potential for commercial applications of OSCs.

关键词： Organic solar cells Additive-assisted layer-by-layer processing Three-dimensional fibril morphology Bulk p-i-n structure Optical management

SINGLE-CHANNEL BliND IDENTIFICATION AND EQUAliZATION 0WITH INTERFERENCE-REJECTION CAPABIliTIES

在线全文

学校读者我要写书评

暂无评论

SINGLE-CHANNEL BLIND IDENTIFICATION AND EQUALIZATION 0WITH I...