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Tungsten 2023年第2期5卷 235-246页

作者： Qiu zhang ting-ting zhang Feng-Yan Li Lin Xu Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education Faculty of ChemistryNortheast Normal UniversityChangchun 130024China

To find a novel counter electrode(CE)material for quantum dot-sensitized solar cells(QDSSCs),pompon-like NiCo_(2)O_(4) nanospheres are synthesized by a facile solvothermal and post-calcination method and we attempt to apply it as a CE material for QDS *** catalytic performance of NiCo_(2)O_(4) counter electrode is investigated in detail through electrochemical impedance spectroscopy,Tafel test and cyclic *** catalytic activity of NiCo_(2)O_(4) CE is superior to that of nanoflower-like Cu2S CE and traditional Cu2S/brass CE,which is mainly attributed to the large specific surface area,outstanding electrical conductivity of bimetallic oxides and the synergistic promotion effect of metals with different valence *** standard sunlight(air mass AM 1.5G 100 mW·cm^(-2)),the CdS/CdSe/ZnS-sensitized solar cell assembled with NiCo_(2)O_(4) CE achieved a photoelectric conversion efficiency of 5.55%,with a short current density of 22.49 mA·cm^(-2),an open circuit voltage of 0.574 V,and a fill factor of 0.43,which is slightly higher than the QDSSCs with nanoflower-like Cu_(2)S CE(4.75%)and traditional Cu_(2)S/brass CE(4.69%).This research provides ideas for discovering innovative and efficient CE materials for QDSSCs.

关键词： QDSSCs Counter electrodes NiCo_(2)O_(4) Cu_(2)S

Combined simplified maximum likelihood and sphere decoding algorithm for MIMO system

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The Journal of China Universities of Posts and Telecommunications 2008年第2期15卷 56-59,81页

作者： zhang Lei YUAN ting-ting zhang Xin YANG Da-cheng School of Telecommunication Engineering Beijing University of Posts andTeleconununications Beijing 100876 China

In this article, a new system model for sphere decoding （SD） algorithm is introduced. For the 2 × 2 multipleinput multiple-out （MIMO） system, a simplified maximum likelihood （SML） decoding algorithm is proposed based on the new model. The SML algorithm achieves optimal maximum likelihood （ML） performance, and drastically reduces the complexity as compared to the conventional SD algorithm. The improved algorithm is presented by combining the sphere decoding algorithm based on Schnorr-Euchner strategy （SE-SD） with the SML algorithm when the number of transmit antennas exceeds 2. Compared to conventional SD, the proposed algorithm has low complexity especially at low signal to noise ratio （SNR）. It is shown by simulation that the proposed algorithm has performance very close to conventional SD.

关键词： maximum likelihood decoding sphere decoding,MIMO complexity

A quality requirements model and verification approach for system of systems based on description logic

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Frontiers of Information Technology & Electronic Engineering 2017年第3期18卷 346-361页

作者： Qing-long WANG Zhi-xue WANG ting-ting zhang Wei-xing ZHU College of Command Information Systems PLA University of Science and TechnologyNanjing 210007China Information Management Center PLA University of Science and TechnologyNanjing 210007China

System of systems engineering(So SE) involves the complex procedure of translating capability needs into the high-level requirements for system of systems(So S) and evaluating how the SoS quality requirements meet their capability needs. One of the key issues is to model the So S requirements and automate the verification procedure. To solve the problem of modeling and verification, meta-models are proposed to refine both functional and non-functional characteristics of the So S requirements. A domain-specific modeling language is defined by extending Unified Modeling Language(UML) class and association with fuzzy constructs to model the vague and uncertain concepts of the SoS quality requirements. The efficiency evaluation function of the cloud model is introduced to evaluate the efficiency of the SoS quality requirements. Then a concise algorithm transforms the fuzzy UML models into the description logic(DL) ontology so that the verification can be automated with a DL reasoner. This method implements modeling and verification of high-level So S quality requirements. A crisp case is used to facilitate and demonstrate the correctness and feasibility of this method.

关键词： System of systems(So S) Cloud model Description logic(DL) Requirements verification

Eco-friendly synthesis of 2-substituted-2,3-dihydro-4(1H)-quinazolinones in water

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Chinese Chemical Letters 2011年第4期22卷 427-430页

作者： Min Wang ting ting zhang Zhi Guo Song College of Chemistry and Chemical Engineering Bohai University Jinzhou 121000 China Centerfor Science & Technology Experiment Bohai University Jinzhou 121000 China

2-Substituted-2,3-dihydro-4（1H）-quinazolinones were synthesized in high yield by condensation of 2-anthranilamide with aromatic aldehydes or ketones in refluxing water without *** protocol has advantages of high yie... 详细信息

关键词： 2 3-Dihydro-4(1H)-quinazolinone 2-Anthranilamide Aldehydes Ketones Synthesis in water

Strontium chloride-catalyzed one-pot synthesis of 4(3H)-quinazolinones under solvent-free conditions

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Chinese Chemical Letters 2010年第10期21卷 1167-1170页

作者： Min Wang Zhi Guo Song ting ting zhang College of Chemistry and Chemical Engineering Bohai University Jinzhou 121000 China Center for Science & Technology Experiment Bohai University Jinzhou 121000 China

Strontium chloride was used as an efficient and recyclable catalyst in one-pot condensation of anthranilic acid, ortho esters and amines leading to the formation of 4（3H）-quinazolinone derivatives in good yields at ... 详细信息

关键词： 4(3H)-Quinazolinones One-pot synthesis Solvent-free conditions Strontium chloride

Supported bimetallic catalyst Pt-Pb/SiO2 for selective conversion of nitrobenzene to p-aminophenol in pressurized CO2/H2O system

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Chinese Chemical Letters 2017年第2期28卷 307-311页

作者： ting-ting zhang Jing-Yang Jiang Yan-Hua Wang State Key Laboratory of Fine Chemicals Faculty of Chemical Environmental and Biological Sdence and Technology Dalian University of Technology Dalian 116024 China

Various supported Pt-Pb bimetallic catalysts were prepared and applied for the catalytic conversion of nitrobenzene to p-aminophenol in the environmentally benign pressurized CO2/H2O *** the bimetallic catalysts prepared,Pt-Pb/SiO2 is the best and nitrobenzene could be converted to paminophenol with a selectivity as high as 82% when the reaction was carried out using this catalyst at110 ℃ under 5 MPa CO2 and 0.2 MPa H2.

关键词： Nitrobenzene p-Aminophenol Pt-Pb bimetallic catalysts CO2/H2O system Environmentally benign

Three-component synthesis of amidoalkyl naphthols catalyzed by bismuth(Ⅲ) nitrate pentahydrate

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Chinese Chemical Letters 2012年第1期23卷 65-68页

作者： Min Wang Yan Liang ting ting zhang Jing Jing Gao College of Chemistry Chemical Engineering and Food SafetyBohai UniversityJinzhou 121000China

Bismuth（Ⅲ） nitrate pentahydrate catalyzed the three-component condensation ofβ-naphthol,aldehydes and amines/urea under solvent-free conditions to afford the corresponding amidoalkyl naphthols in excellent yields.

关键词： Amidoalkyl naphthols Bismuth(Ⅲ) nitrate One-pot synthesis Solvent-free conditions

A new spirostanol saponin from the rhizomes of Paris mairei

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Chinese Chemical Letters 2009年第7期20卷 820-822页

作者： Xiao Xiao Liu Lei Wang ting ting zhang Qiang Wang Department of Chinese Materia Medica Analysis China Pharmaceutical University Nanjing 210038 China Department of Phytochemistry China Pharmaceutical University Nanjing 210038. China

A new spirostanol steroidal saponin, named maireioside A （1）, together with three known steroidal saponins, hypoglaucin G （2）, parisaponin I （3）, and diosgenin-3-O-α-L-rhamnopyranosyl （1→4）-[α-L-rhamnopyranosyl （1→2）]-β-D-glucopyranoside （4）, were isolated from the rhizomes of Paris mairei. The structure elucidation was accomplished by 1D and 2D NMR methods, HR-ESI-MS, and hydrolysis. C 2009 Qiang Wang. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.

关键词： Spirostanol saponin Paris mairei Maireioside A

Strontium chloride-catalyzed one-pot synthesis of 2,3-dihydroquinazolin-4(1H)-ones in protic media

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Chinese Chemical Letters 2011年第12期22卷 1423-1426页

作者： Min Wang ting ting zhang Yan Liang Jing Jing Gao College of Chemistry and Chemical Engineering Bohai University Jinzhou 121000 China

A wide range of mono-and disubstituted 2,3-dihydroquinazolin-4（1H）-ones were obtained in high yields by condensation of isatoic anhydride,aldehydes with ammonium salts or primary amines in the presence of strontium ... 详细信息

关键词： 2 3-Dihydroquinazolin-4(1H)-ones One-pot synthesis Strontium chloride Isatoic anhydride

A review on graphite surface modification methods towards low carbon-containing refractories

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Journal of Iron and Steel Research International 2024年第6期31卷 1291-1303页

作者： ting-ting zhang Jun Ding Bei-yue Ma Zheng-long Liu Chao Yu Cheng-ji Deng The State Key Laboratory of Refractories and Metallurgy Wuhan University of Science and TechnologyWuhan 430081HubeiChina School of Metallurgy Northeastern UniversityShenyang 110819LiaoningChina

The rapid development of iron and steel metallurgy technology has promoted the continuous innovation and iteration of carbon-containing refractories for clean steel *** meet the high-quality requirements for clean steel production and full exploit the performance advantages of carbon-containing refractories in dynamic smelting environment,it is necessary to explore the role of graphite and modified graphite in carbon-containing *** on this,graphite surface modification methods,including surfactants,surface oxidation,and surface coating,and their applications in carbon-containing refractories are *** advantages and disadvantages of each method are analyzed for practical ***,combined with the existing problems,the application prospect of improved graphite in carbon-containing refractories is discussed.

关键词： Graphite Carbon-containing refractory Clean steel Surface modification Service performance