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Open-circuit voltage analysis of p-i-n type amorphous silicon solar cells deposited at low temperature

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Chinese Physics B 2011年第8期20卷 403-407页

作者： Ni Jian Zhang Jian-Jun Cao Yu Wang xian-bao Li Chao chen Xin-Liang Geng Xin-Hua Zhao Ying Institute of Photo-electronics Thin Film Devices and Technique of Nankai University Key Laboratory of Photo-electronics Thin Film Devices and Technique of Tianjin Key Laboratory of Photo-electronicInformation Science and Technology of Ministry of Education (Nankai University) Tianjin 300071 China

This paper identifies the contributions of p-a-SiC：H layers and i-a-Si：H layers to the open circuit voltage of p-i-n type a-Si：H solar cells deposited at a low temperature of 125℃. We find that poor quality p-a-SiC：H films under regular conditions lead to a restriction of open circuit voltage although the band gap of the i-layer varies widely. A significant improvement in open circuit voltage has been obtained by using high quality p-~SiC：H films optimized at the ＂low-power regime＂ under low silane flow rates and high hydrogen dilution conditions.

关键词： amorphous silicon solar cell low temperature open-circuit voltage

Role of iron ore in enhancing gasification of iron coke:Structural evolution,influence mechanism and kinetic analysis

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 58-69页

作者： Jie Wang Wei Wang Xuheng chen Junfang bao Qiuyue Hao Heng Zheng Runsheng Xu School of Chemistry and Materials Science Hubei Engineering UniversityXiaogan 432000China Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education Wuhan University of Science and TechnologyWuhan 430081China Institue of Ironmaking Technology Baosteel Central Research InstituteShanghai 201999China State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China

The utilization of iron coke provides a green pathway for low-carbon *** uncover the influence mechanism of iron ore on the behavior and kinetics of iron coke gasification,the effect of iron ore on the microstructure of iron coke was ***,a comparative study of the gasification reactions between iron coke and coke was conducted through non-isothermal thermogravimetric *** findings indicate that compared to coke,iron coke exhibits an augmentation in micropores and specific surface area,and the micropores further extend and *** provides more adsorption sites for CO_(2) molecules during the gasification process,resulting in a reduction in the initial gasification temperature of iron *** the heating rate in non-isothermal gasification can enhance the reactivity of iron *** metallic iron reduced from iron ore is embedded in the carbon matrix,reducing the orderliness of the carbon structure,which is primarily responsible for the heightened reactivity of the carbon *** kinetic study indicates that the random pore model can effectively represent the gasification process of iron coke due to its rich pore ***,as the proportion of iron ore increases,the activation energy for the carbon gasification gradually decreases,from 246.2 kJ/mol for coke to 192.5 kJ/mol for iron coke 15wt%.

关键词： low-carbon ironmaking iron coke gasification structural evolution kinetic model

Construction of recombinant plasmid and prokaryotic expression in E. Coli and biological activity analysis of human placenta arresten gene

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Hepatobiliary & Pancreatic Diseases International 2006年第1期5卷 74-79页

作者： Jin-Ping Zheng, Hai-Ying Tang, xian-Jiu chen, bao-Feng Yu, Jun Xie and Tang-Chun Wu Department of Toxicology (and Department of Biochemistry and Molecular Biology Shanxi Medical University, Taiyuan 030001, China: Institute of Occupational Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China Department of Toxicology Shanxi Medical Universiy Taiyuan 030001 China. zhengzheng200101@***

BACKGROUND: The proliferation and metastasis of cancers depend on angiogenesis. This property provides the feasibility for the treatment of cancer by inhibition of angiogenesis, and many angiogenic inhibitors have been demonstrated to effectively inhibit angiogenesis and consequently the growth of solid cancer. As for the newly identified angiogenesis inhibitor, arresten, some studies have found its high activity on restrainting tumor vessel. This study was to assess the anti-angiogenic activity of arresten. METHODS: The arresten gene was obtained from a healthy puerpera's placenta tissue by the reverse transcriptase-polymerase chain reaction (RT-PCR) method, and molecular cloning to prokaryotic expression plasmid pBV220 by recombination strategy. The prokaryotic expression plasmid pBV220/arr was identified by restriction enzyme digestion and sequenced. The pBV220/arr was transformed into E. coli JM109, DH5α, BL21 and BL21 (DE3) by the CaCl_2 transformation method. The arresten expression level was detected by SDS-PAGE. The expressed product was purlfled, re-naturalized and detected for its biological activity of inhibiting the angiogenesis of chorioallantoic membrane (CAM). RESULTS: The arresten gene was cloned and pBV220/arr was constructed. The arresten expression level of protein was highly increased after pBV220/arr was transformed into E. coli BL21 (DE3). SDS-PAGE showed that the expressed arresten proteins were mainly inclusion bodies and had a molecular weight of 26 kDa. The expressed arresten protein showed evident biological activities. CONCLUSIONS: The successful construction of recombinant plasmid pBV220/arr and the effective expression in E. coil have laid a foundation for further study of its anti-angiogenic function and may pave the way for future antitumor application.

关键词： arresten prokaryotic expression vector gene cloning and expression biological activity

A surface engineering strategy for the stabilization of zinc metal anodes with montmorillonite layers toward long-life rechargeable aqueous zinc ion batteries

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Journal of Energy Chemistry 2025年第1期100卷 94-105页

作者： Wenbo Wang Ruifeng Xu Xu Zhang Peiyu Wang bao Yang Bingjun Yang Juan Yang Kailimai Su Pengjun Ma Yanan Deng xianfeng Fan Wanjun chen Key Laboratory for Electronic Materials College of Electrical Engineering Northwest Minzu University Resource Chemistry and Energy Materials Research Center State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical Physics Chinese Academy of Sciences University of Chinese Academy of Sciences Institute for Materials and Processes School of Engineering University of Edinburgh

Rechargeable aqueous zinc-ion batteries （AZIBs） exhibit appreciable potential in the domain of electrochemical energy ***,there are serious challenges for AZIBs,for instance zinc dendrite growth,hydrogen evolution reaction （HER）,and corrosion side ***,we propose a surface engineering modification strategy for coating the montmorillonite （MMT） layer onto the surface of the Zn anode to tackle these issues,thereby achieving high cycling stability for rechargeable *** results reveal that the MMT layer on the surface of the Zn anode is able to provide ordered zincophilic channels for zinc ions migration,facilitating the reaction kinetics of zinc *** functional theory（DFT） calculations and water contact angle （CA） tests prove that MMT@Zn anode exhibits superior adsorption capacity for Zn2+and better hydrophobicity than the bare Zn anode,thereby achieving excellent cycling ***,the MMT@Zn||MMT@Zn symmetric cell holds the stable cycling over 5600 h at 0.5 mA cm-2and 0.125 m A h cm-2,even exceeding 1800 h long cycling under harsh conditions of 5 m A cm-2and 1.25 m A h *** MMT@Zn||V2O5full cell reaches over 3000 cycles at 2 A g-1with excellent rate ***,this surface engineering modification strategy for enhancing the electrochemical performance of AZIBs represents a promising application.

关键词： Surface engineering strategy Montmorillonite layer Protection mechanism of Zn anode Cycling stability Aqueous zinc ion batteries

The research of cooperative routing algorithm in mobile Ad hoc networks

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The Journal of China Universities of Posts and Telecommunications 2006年第3期13卷 5-10页

作者： chen Chao ZHENG bao-yu ZHAO xian-jing Institute of Signal and Information Processing Nanjing University of Posts and Telecommunications Nanjing 210003 China

Cooperative routing technology can efficiently improve the performance of the network by initiatively selecting cooperative nodes to forward the data. In this article, cooperative routing algorithms are proposed and implemented based on three different criteria： optimal channel state, maximal remaining energy, and the shortest path. The simulation based on network simulation （NS） compares the performance of the proposed algorithms with non-cooperative destination-sequenced distancevector （DSDV） protocol. The results reveal that cooperative algorithms outperform DSDV routing protocol with distinctive gains at the cost of sacrificing acceptable normalized network load.

关键词： cooperative routing crosslayer DSDV routing protocol Ad hoc networks

Weighted cooperative routing for wireless mobile Ad-hoc network

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The Journal of China Universities of Posts and Telecommunications 2007年第1期14卷 16-21页

作者： ZHAO xian-jing ZHENG bao-yu chen Chao Institute of Signal and Information Processing Nanjing University of Posts and Telecommunications Nanjing 210003 China

A novel weighted cooperative routing algorithm （WCRA） is proposed in this article, which was on the basis of a weighted metric with maximal remaining energy （MRE） of the relays and the maximal received SNR （MRS） of the nodes. Moreover, a cooperative routing protocol was implemented on the basis of WCRA. Then simulation is done on network simulation （NS-2） platform to compare the performances of MRS, MRE and WCRA with that of noncooperative destination-sequenced destination-sequenced distance-vector （DSDV） protocol. The simulative results show that WCRA obtains a performance tradeoff between MRE and MRS in terms of delivery ratio and network lifetime, which can effectively improve the network lifetime at an acceptable loss of delivery ratio.

关键词： weighted cooperative routing Ad-hoc networks,quality of service DSDV routing protocol

Permeability measurement of the fracture-matrix system with 3D embedded discrete fracture model

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Petroleum Science 2022年第4期19卷 1757-1765页

作者： bao Jia cheng-Gang xian State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum(Bejing)Beijing 102249China Unconventional Petroleum Research Institute China University of Petroleum(Bejing)Bejing 102249China

In this work, we performed the pulse-decay experiment on a fractured shale core and applied the 3 D embedded discrete fracture model(EDFM) to simulate the experiment process. The irregularly rough fracture surface was depicted in detail using a 3 D scanner. Then the fracture surface profile was imported in the discrete fracture network model to simulate the flow process in the fracture-matrix system realistically. History matching was efficiently performed to simultaneously obtain porosity and permeability for the matrix and fracture. Gas properties after applying nanopore confinement were obtained by modifying Sutton's viscosity correlation with sensitivity analysis on the pore diameter ranging from 2 to50 nm. Nanopore confinement results in low matched permeability due to viscosity reduction in the matrix-only porous media. The fracture-matrix system complicates the interpretation of nanopore confinement impact on flow behavior in shale reservoirs. Different scenarios of the highly fractured and matrix-dominated systems were discussed in detail by constructing the digital twin model.

关键词： Permeability Fracture Pulse-decay Shale Viscosity

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中国煤层气资源分布及勘探前景

天然气工业 2004年第5期24卷 8-10页

作者：李五忠王一兵孙斌鲜保安陈彩红王宪花中国石油勘探开发研究院廊坊分院

中国煤层气资源潜力巨大 ,埋深 15 0 0m以浅的资源总量约为 2 7× 10 12 m3 ,广泛分布于五大聚煤区六大含煤层系 ,但其分布具有很大的差异性。本文在分析中国煤层气资源分布特征的基础上 ,根据煤层气地质选区条件 ,通过优选 ,提出了沁... 详细信息

中国煤层气资源潜力巨大 ,埋深 15 0 0m以浅的资源总量约为 2 7× 10 12 m3 ,广泛分布于五大聚煤区六大含煤层系 ,但其分布具有很大的差异性。本文在分析中国煤层气资源分布特征的基础上 ,根据煤层气地质选区条件 ,通过优选 ,提出了沁水、鄂尔多斯、宁武、沙尔湖等煤层气有利勘探方向 ,并对中国煤层气勘探开发前景进行了展望。

关键词：中国勘探技术煤层气资源分布特征资源量甲烷浓度含气饱和度

Theoretical Study on the Stable Structures and Aromaticities for Pnictogen Dianionic Sb4^2-, Bi4^2-, and （SbBi）2^2- Clusters

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Chinese Journal of Chemical Physics 2009年第1期22卷 75-81页

作者： Xing-bao Wang xian-xing Chi School of Physics and Electronic Information Wenzhou University Wenzhou 325027 China

Through the theoretical calculation of structural optimization, vibrational frequencies and atomization energies with one method of density functional theory （B3LYP） and two post- Hartree-Fock approaches （MP2, CCSD（T））, several stable isomers for new three pnictogen dianionic Sb4^2-, Bi4^2-, and （SbBi）2^2- species were determined. For two homoatomic Sb4^2- and Bi4^2- species, there are three stable isomers： square （D4h）, roof-shaped （C2v-1）, and C2v-2 structure with the square isomer being the ground state. For the heteroatomic dian- ionic （SbBi）2^2- species, there are also three stable isomers： rhombus （D2h）, roof-shaped （C1）, and C2v structures with the rhombic isomer being the ground state. The calculated NICS values show that nucleus-independent chemical shifts （NICS） values of roof-shaped isomers for Sb4^2-, Bi4^2-, and （SbBi）2^2- species are all negative, consequently indicating that these roof-shaped isomers possess aromaticities. NICS values for the planar ring isomers are all positive, suggesting that these three planar ring isomers have antiaromatic characters. The aromaticity for the two stable roof-shaped and square isomers are preliminarily explained and discussed with MO analysis.

关键词： Pnictogen cluster Ab initio Aromaticity Nucleus-independent chemical shift