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Effects of Metal Oxide Modifications on Photoelectrochemical Properties of Mesoporous TiO2 Nanoparticles Electrodes for Dye-Sensitized Solar Cells

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Chinese Journal of Chemical Physics 2012年第5期25卷 609-616,I0004页

作者： Tian-you Peng Ke Fan De Zhao li-juan Yu ren-jie li College of Chemistry and Molecular Science Wuhan UniversityWuhan 430072China

Mesoporous TiO2 （m-TiO2） nanoparticles were used to prepare the porous film electrodes for dye-sensitized solar cells, and a second metal oxide （MgO, ZnO, A1203, or NiO） modifi- cation was carried out by dipping the m-TiO2 electrode into their respective nitrate solution followed by annealing at 500 ℃. Experimental results indicated that the above second metal oxide modifications on m-TiO2 electrode are shown in all cases to act as barrier layer for the interracial charge transfer processes, but film electron transport and interfacial charge recombination characteristics under applied bias voltage were dependent significantly on the existing states and kinds of these second metal oxides. Those changes based on sec- ond metal oxide modifications showed good correlation with the current-voltage analyses of dye-sensitized solar cell, and all modifications were found to increase the open-circuit photo- voltage in various degrees, while the MgO, ZnO, and NiO modifications result in 23%, 13%, and 6% improvement in cell conversion efficiency, respectively. The above observations indi- cate that controlling the charge transport and recombination is very important to improve the photovoltaic performance of TiO2-based solar cell.

关键词： Dye-sensitized solar cell Metal oxide modification Photoelectrochemical prop-erty Mesoporous TiO2 nanoparticle

Solitary bone plasmacytoma of the upper cervical spine: A case report

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World Journal of Clinical Cases 2021年第10期9卷 2380-2385页

作者： ren-jie li Xue-Feng li Wei-Min Jiang Department of Orthopaedic Surgery The First Affiliated Hospital of Soochow UniversitySuzhou 215000Jiangsu ProvinceChina

BACKGROUND Solitary bone plasmacytoma(SBP)of the upper cervical spine is a rare *** exact role of surgery for SBP remains *** SUMMARY We present the first case of SBP of the C2.A 69-year-old Chinese woman presented with severe neck pain and limitation of rotative activity for 2 *** underwent anterior one-stage debridement combined with cement augmentation in the C2 to reconstruct stability of the *** patient did not receive postoperative *** now remains disease free with no neck pain or neurological deficit after follow-up of 3 *** Anterior one-stage debridement combined with cement augmentation of the upper cervical spine may be an alternative treatment for SBP.

关键词： Solitary bone plasmacytoma Multiple myeloma Cervical spine Surgical treatment Mini-invasive surgery Case report

Effects of direct ultrasonic treatment on microstructure and elongation of semi-solid Sn-62Bi alloy

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China Foundry 2015年第3期12卷 163-168页

作者： Hui-ting Zheng Yong-jun Hu ren-jie li Hong-huan Yang Xiao-yan Sun Zhi-hao li School of Materials and Energy Guangdong University of Technology

A new direct ultrasonic treatment(DUT) setup with the ultrasonic horn placed in the horizontal direction was developed and used in the preparation of semi-solid Sn-62 Bi slurry. The influence of DUT temperature on microstructure and properties of Sn-62 Bi alloy were studied. The test results of XRD showed that the semi-solid Sn-62 Bi alloy obtained by the DUT process exhibits pronounced preferential orientation of Bi(2 0 2), Bi(-1 1 1), Bi(-2 0 1), Sn(1 1 0) and Sn(2 2 0) planes. Compared to the conventional liquid casting Sn-62 Bi alloy without DUT, it was discovered that the primary Bi blocks of semi-solid Sn-62 Bi alloy prepared with the DUT process distribute more homogeneously and are smaller. With the treatment by ultrasonic vibration in the semi-solid state for 120 s, the higher the primary Bi phase fraction in the slurry, the smaller the size of primary semi-solid Bi blocks formed after solidification. The average side length of the primary Bi blocks was from 30 μm to 80 μm. The elongation of Sn-62 Bi alloy treated by DUT for 120 s at 145 °C is 43.21%, reflecting a distinctly improvement by 129.10%, as compared to the conventional liquid casting Sn-62 Bi alloy without DUT. This indicates that DUT process could improve dramatically the ductility of Sn-62 Bi alloys content. The microstructure evolution mechanism of semi-solid Sn-62 Bi alloy slurry was also analyzed.

关键词： direct ultrasonic treatment semi-solid Sn-Bi microstructure elongation

Biosynthesis of organic molecules via artificial cascade reactions based on cytochrome P450 monooxygenases

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Green Synthesis and Catalysis 2020年第1期1卷 52-59页

作者： ren-jie li Zhongwei Zhang Carlos G.Acevedo-Rocha Jing Zhao Aitao li State Key Laboratory of Biocatalysis and Enzyme Engineering Hubei Collaborative Innovation Center for Green Transformation of Bio-ResourcesHubei Key Laboratory of Industrial BiotechnologySchool of Life SciencesHubei UniversityWuhan 430062China Biosyntia ApS Copenhagen 2100Denmark

Cytochrome P450 monooxygenases(P450s)play crucial roles in the oxyfunctionalization of non-activated hydrocarbons,thus bridging the gap between simple molecules and high value-added fine *** introduction of P450s into artificially designed cascade reactions provides an exciting opportunity to accomplish challenging reactions and access organic compounds that cannot be achieved by traditional chemical catalysts or by natural metabolic *** main objective of this review is to provide an overview of different types of artificially designed multi-step cascades in which P450s are involved as key catalysts in the biosynthesis of various organic *** different efforts include in vitro multi-enzymatic biocatalytic cascades,in vivo biocatalytic cascades as well as chemo-enzymatic hybrid ***,this work provides an overview of cascade reactions involving P450s with various potential applications for the industrial production of food,cosmetics,polymers and pharmaceuticals.

关键词： Cascade reaction P450 monooxygenase Oxyfunctionalization Biocatalysis Artificial pathway

Effects of recombinant human growth hormone on enterocutaneous fistula patients

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World Journal of Gastroenterology 2008年第44期14卷 6858-6862页

作者： Guo-Sheng Gu Jian-An ren Ning li jie-Shou li The Research Institute of General Surgery Clinical School (Jinling Hospital) School of Medicine Nanjing University Nanjing 210002 Jiangsu Province China

AIM： To explore the effects of recombinant human growth hormone （rhGH） on intestinal mucosal epithelial cell proliferation and nutritional status in patients with enterocutaneous fistula. METHODS： Eight patients with enterocutaneous fistulas received recombinant human growth hormone （10 ug/d） for 7 d. Image analysis and immunohistochemical techniques were used to analyse the expression of proliferating cell nuclear antigen （PCNA） in intestinal mucosal epithelial cells in biopsy samples from the patients who had undergone an endoscopic biopsy through the fistula at day 0, 4 and 7. Body weights, nitrogen excretion, serum levels of total proteins, albumin, prealbumin, transferrin and fibronectin were measured at day 0, 4 and 7. RESULTS： Significant improvements occurred in the expression of PCNA in the intestinal mucosal epithelial cells at day 4 and 7 compared to day 0 （24.93 ± 3.41%, 30.46 ± 5.24% vs 12.92 ± 4.20%, p 〈 0.01）. These changes were accompanied by the significant improvement of villus height （500.54 ± 53.79 um, 459.03 ± 88.98um vs 210.94 ± 49.16 um, P 〈 0.01）, serum levels of total proteins （70.52 ± 5.13 g/L, 74.89 ± 5.16 g/L vs 63.51 ± 2.47 g/L, P 〈 0.01）, albumin （39.44 ± 1.18 g/L, 42.39 ± 1.68 g/L vs 35.74 ± 1.75 g/L, P 〈 0.01） and fibronectin （236.3 4- 16.5 mg/L, 275.8± 16.9 mg/L vs 172.5 ± 21.4 mg/L, P 〈 0.01） at day 4 and 7, and prealbumin （286.38 ± 65.61 mg/L vs 180.88 ± 48.28 mg/L, P 〈 0.05）, transferrin （2.61 ± 0.12 g/L vs 2.41 ±0.14 g/L, P 〈 0.05） at day 7. Nitrogen excretion was significantly decreased at day 7 （3.40 ± 1.65 g/d vs 7.25 ± 3.92 g/d, P 〈 0.05）. No change was observed in the body weight. CONCLUSION： Recombinant human growth hormone could promote intestinal mucosal epithelial cell proliferation and protein synthesis in patients with enterocutaneous fistula.

关键词： Recombinant human growth hormone Enterocutaneous fistula Intestinal Epithelial cell Proliferating cell nuclear antigen

Identification of anomalous fast bulk events in a p-type point-contact germanium detector

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Nuclear Science and Techniques 2022年第5期33卷 53-67页

作者： ren-Ming-jie li Shu-Kui liu Shin-Ted lin li-Tao Yang Qian Yue Chang-Hao Fang Hai-Tao Jia Xi Jiang Qian-Yun li Yu liu Yu-Lu Yan Kang-Kang Zhao Lei Zhang Chang-Jian Tang Hao-Yang Xing Jing-Jun Zhu College of Physics Sichuan UniversityChengdu 610065China Key Laboratory of Particle and Radiation Imaging(Ministry of Education)and Department of Engineering Physics Tsinghua UniversityBeijing 100084China

The ultralow detection threshold,ultralow intrinsic background,and excellent energy resolution of ptype point-contact germanium detectors are important for rare-event searches,in particular for the detection of direct dark matter interactions,coherent elastic neutrino-nucleus scattering,and neutrinoless double beta *** bulk events with an extremely fast rise time are observed in the CDEX-1B *** report a method of extracting fast bulk events from bulk events using a pulse shape simulation and reconstructed source experiment *** data and the distribution of X-rays generated by intrinsic radioactivity verified that the fast bulk experienced a single hit near the passivation *** performance of this germanium detector indicates that it is capable of single-hit bulk spatial resolution and thus provides a background removal technique.

关键词： p-type point-contact germanium detector Dark matter Pulse shape analysis Anomalous fast bulk events

Sequential changes of body composition in patients with enterocutaneous fistula during the 10 days after admission

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World Journal of Gastroenterology 2002年第6期8卷 1149-1152页

作者： Xin-Bo Wang Jian-An ren jie-Shou li,Clinical School of Medical College,Nanjing University,Research Institute of General Surgery,Nanjing General Hospital,People’s liberation Army,Nanjing 210002,Jiangsu Province,China Nanjing University Research Institute of General Surgery Naning General Hospital People's Liberation Army Jiangsu Province China. wang_xb@***

AIM:To investigate the sequential changes of body composition in the metablic response that occurred in a group of patients with entercutaneous fistula after admission to the hospital.

关键词：入院后肠皮肤瘘管患者体况代谢变化

High‑accuracy measurement of Compton scattering in germanium for dark matter searches

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Nuclear Science and Techniques 2022年第12期33卷 75-87页

作者： Hai‑Tao Jia Shin‑Ted lin Shu‑Kui liu Hsin‑Chang Chi Muhammed Deniz Chang‑Hao Fang Peng Gu Xi Jiang Yi‑Ke Shu Qian‑Yun li Yu liu ren‑Ming‑jie li Chen‑Kai Qiao Chang‑Jian Tang Henry Tsz‑King Wong Hao‑Yang Xing li‑Tao Yang Qian Yue Yu‑Lu Yan Kang‑Kang Zhao Jing‑Jun Zhu College of Physics Sichuan University610065 ChengduChina Department of Physics National Dong Hwa University97401 ShoufengHualienChina Department of Physics Dokuz Eylül University35160 BucaİzmirTurkey Institute of Physics Academia Sinica11529 TaipeiChina Key Laboratory of Particle and Radiation Imaging(Ministry of Education)and Department of Engineering Physics Tsinghua University100084 BeijingChina Institute of Nuclear Science and Technology Sichuan University610065 ChengduChina

Compton scattering with bound electrons contributes to a significant atomic effect in low-momentum transfer,yielding background structures in direct light dark matter searches as well as low-energy rare event *** report the measurement of Compton scattering in low-momentum transfer by implementing a 10-g germanium detector bombarded by a^(137)Cs source with a radioactivity of 8.7 mCi and a scatter photon captured by a cylindrical NaI(Tl)detector.A fully relativistic impulse approximation combined with multi-configuration Dirac–Fock wavefunctions was evaluated,and the scattering function of Geant4 software was replaced by our calculation *** measurements show that the livermore model with the modified scattering function in Geant4 is in good agreement with the experimental *** is also revealed that atomic many-body effects significantly influence Compton scattering for low-momentum transfer(sub-keV energy transfer).

关键词： Compton scattering experiment Germanium detector Atomic many-body effects Geant4 Dark matter

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双重结构扭曲下的经济失衡:理论与经验证据

南开经济研究 2016年第5期 89-109页

作者：魏婕任保平李勇西北大学经济管理学院

以高投资和低消费为特征的结构失衡成为困扰中国经济的一大顽疾,其造成的资源错配和经济增长质量问题被广泛诟病。通过横、纵向数据比较分析,本文发现中国投资率和消费率均不在两者的合意区间,投资消费结构失衡状况明显。基于双重的结... 详细信息

以高投资和低消费为特征的结构失衡成为困扰中国经济的一大顽疾,其造成的资源错配和经济增长质量问题被广泛诟病。通过横、纵向数据比较分析,本文发现中国投资率和消费率均不在两者的合意区间,投资消费结构失衡状况明显。基于双重的结构视角,我们采用中国1998—2011年的省际面板数据对其失衡原因进行计量检验和分析,发现中国投资消费结构失衡的基本逻辑在于需求与供给层面双重经济结构扭曲:需求层面收入分配结构扭曲(收入分配畸形所产生的总量效应)和供给层面技术结构扭曲(低水平技术供给所产生的结构效应)的共同作用是导致失衡的重要原因。未来对于中国经济失衡的纠偏,其关键是在保增长的前提下进行结构调整和战略转型,特别是对双重结构扭曲的治理和矫正。

关键词：投资消费结构经济失衡双重扭曲