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The existence form and synergistic effect of P in improving the structural stability and electrochemical performance of Li_(2)Mn_(0.5)Fe_(0.5)SiO_(4)/C cathode materials

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Journal of Materiomics 2018年第3期4卷 179-186页

作者： Lei Wei Shi-Xi zhao Xia Wu shu-Jin zhao Ce-Wen Nan Graduate School at Shenzhen Tsinghua UniversityShenzhen518055China School of Materials Science and Engineering Tsinghua UniversityBeijing100084China School of Materials Science and Engineering Jiamusi UniversityJiamusi154007China

Nano-Li_(2)Mn_(0.5)Fe_(0.5)SiO_(4)/C cathode material is synthesized by a hydrothermal route and phosphorus substitution is applied to improve structural stability and electrochemical *** low substitution content,P element completely enters into the lattice,forms[PO_(4)]tetrahedrons and partially replaces[SiO_(4)]tetrahedrons,which is confirmed by X-ray diffraction and X-ray photoelectron spectroscope *** substitution helps to suppress the change of coordination number of Mn and stabilize the material structure to some extent,obtaining better electrochemical performance in the early *** the increase of P content,parts of P element exist in Li_(3)PO_(4)which distributes uniformly and co-exists with active *** tests prove that existing Li_(3)PO_(4)has positive impacts on cycle and rate performance,and the lithium ion diffusion coefficient increases by about 14 times than pristine *** the synergistic effects of phosphate substation and proper Li_(3)PO_(4),Li_(2)Mn_(0.5)Fe_(0.5)SiO_(4)/C shows enhanced electrochemical performances.

关键词： Lithium-ion batteries Cathode material Li_(2)Mn_(0.5)Fe_(0.5)SiO_(4)/C P-doping Synergistic effect Structural stability

Enhancements of dimethyl carbonate synthesis from methanol and carbon dioxide:The in situ hydrolysis of 2-cyanopyridine and crystal face effect of ceria

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Chinese Chemical Letters 2015年第9期26卷 1096-1100页

作者： Sheng-Ping Wang Jing-Jie Zhou shu-Yang zhao Yu-Jun zhao Xin-Bin Ma Key Laboratory for Green Chemical Technology School of Chemical Engineering and TechnologyCollaborative Innovation Center of Chemical Science and EngineeringTianjin University

This paper describes the effect of the in situ hydrolysis of 2-cyanopyridine and its derivatives on the synthesis of dimethyl carbonate（DMC） from CO2 and methanol over *** the highest electronic charge number of the carbon in the cyanogroup,is the most effective agent to accelerate the desired reaction by a decrease of ***2（110） planes are active for the hydrolysis of 2-cyanopyridine,further enhancing the DMC formation by in situ removal of water *** DMC yield is improved drastically up to 378.5 mmol g cat^-1 from 12.8 mmol g cat^-1 with the in situ hydrolysis of 2-cyanopyridine over rod-CeO2（1 1 0） catalyst.

关键词： Dimethyl carbonate CeO2 Hydrolysis 2-Cyanopyridine Crystal face

Effect of multiple coulomb scattering on the beam tests of silicon pixel detectors

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Nuclear Science and Techniques 2024年第4期35卷 200-207页

作者： Lan-Kun Li Ming-Yi Dong Ze Gao Liang-Cheng-Long Jin shu-Jun zhao School of Physics and Microelectronics Zhengzhou UniversityZhengzhou 450001China State Key Laboratory of Particle Detection and Electronics(Institute of High Energy Physics CAS)Beijing 100049China University of Chinese Academy of Science Beijing 100049China University of South China Hengyang 421001China

In the research and development of new silicon pixel detectors,a collimated monoenergetic charged-particle test beam equipped with a high-resolution pixel-beam telescope is crucial for prototype verification and performance *** the beam energy is low,the effect of multiple Coulomb scattering on the measured resolution of the Device Under Test(DUT)must be considered to accurately evaluate the performance of the pixel chips and *** study aimed to investigate the effect of multiple Coulomb scattering on the measured resolution,particularly at low beam *** were conducted using Allpix^(2) to study the effects of multiple Coulomb scattering under different beam energies,material budgets,and telescope *** simulations also provided the minimum energy at which the effect of multiple Coulomb scattering could be *** with the results of a five-layer detector system tested with an electron beam at DESY,the simulation results were consistent with the beam test results,confirming the reliability of the simulations.

关键词： Silicon Pixel Detectors Beam Telescope Multiple Coulomb Scattering Spatial Resolution

Gastric motility functional study based on electrical bioimpedance measurements and simultaneous electrogastrography

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2011年第12期12卷 983-989页

作者： Zhang-yong LI Chao-shi REN shu zhao Hong SHA Juan DENG College of Bioinformation Chongqing University of Posts and Telecommunications Chongqing 400065 China nstitute of Biomedical Engineering Chinese Academy of Medical Sciences ＆ Peking Union Medical College Tianjin 300192 China

For some time now,the research on gastric motility and function has fallen behind in the amount of research on gastric endocrine,exocrine secretion,and gastric *** this paper,a noninvasive method to study gastric motility was developed,taking bioimpedance measurements over the gastric area simultaneously with the electrogastrography(EGG).This is based on the concept of observing and analyzing simultaneously the intrinsic electrical gastric activity(basic electric rhythm) and the mechanical gastric ***,preliminary clinical studies of healthy subjects and subjects with functional dyspepsia(FD) and gastritis were carried *** impedance gastric motility(IGM) measurements of the healthy and FD subjects were compared,along with the studies of the FD subjects before treatment and after one week and three weeks of *** also compared IGM measurements of healthy subjects and subjects with erosive gastritis,along with the studies of the subjects with erosive gastritis before treatment and after one week of *** show that FD subjects have poor gastric motility(P0.05),These results suggest the possibility of clinic application of the proposed method.

关键词： Gastric motility Electrical bioimpedance Electrogastrography Functional dyspepsia Gastritis

Analysis of Infrared Divergence in OZI-Forbidden Decays of Orthoquarkonia

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Communications in Theoretical Physics 2009年第6期51卷 1101-1106页

作者： zhao shu-Min PANG Xue-Xia LIU Li-Quan LI Yong-Hui Department of Physics and Technology Hebei University Baoding 071002 China Basic Department North China Institute of Aerospace Engineering Langfang 065000 China

It is interesting to investigate the OZI-forbidden decays of orthoquarkoknium, J/ψ→γπ^0（γη,γη′）, J/ψ→π^＋π^-（π^0π^0）. At first glance, there is infrared divergence in the above processes. In this work, to clear the mist we use the factorization method with the light cone wavefunction of the final state light meson. We prove straightforwardly that the infrared divergence can be eliminated completely.

关键词： OZI-forbidden infrared divergence factorization

Tolerance Granulation Based Community Detection Algorithm

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Tsinghua Science and Technology 2015年第6期20卷 620-626页

作者： shu zhao Wang Ke Jie Chen Feng Liu Menghan Huang Yanping Zhang Jie Tang Key Laboratory of Intelligent Computing and Signal Processing of Ministry of Education Center of Information Support & Assurance TechnologySchool of Computer Science and TechnologyAnhui University School of Computer Science and Technology Tsinghua University

Community structure is one of the most important features in real networks and reveals the internal organization of the vertices. Uncovering accurate community structure is effective for understanding and exploiting networks. Tolerance Granulation based Community Detection Algorithm(TGCDA) is proposed in this paper, which uses tolerance relation(namely tolerance granulation) to granulate a network hierarchically. Firstly, TGCDA relies on the tolerance relation among vertices to form an initial granule set. Then granules in this set which satisfied granulation coefficient are hierarchically merged by tolerance granulation operation. The process is finished till the granule set includes one granule. Finally, select a granule set with maximum granulation criterion to handle overlapping vertices among some granules. The overlapping vertices are merged into corresponding granules based on their degrees of affiliation to realize the community partition of complex networks. The final granules are regarded as communities so that the granulation for a network is actually the community partition of the *** on several datasets show our algorithm is effective and it can identify the community structure more accurately. On real world networks, TGCDA achieves Normalized Mutual Information(NMI) accuracy 17.55% higher than NFA averagely and on synthetic random networks, the NMI accuracy is also improved. For some networks which have a clear community structure, TGCDA is more effective and can detect more accurate community structure than other algorithms.

关键词： tolerance relation community tolerance granulation

Redundant prepuce increases the odds of chronic prostatitis/chronic pelvic pain syndrome （CP/CPPS）

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Asian Journal of Andrology 2014年第5期16卷 774-777,I0011页

作者： Yu-Yang zhao Dong-Liang Xu Fu-Jun zhao Bang-Min Han Yi Shao Wei zhao shu-Jie Xia Department of Urology Shanghai First People's Hospital Institute of Urology Shanghai Jiao Tong University Shanghai China

Some published evidence has revealed that the dendritic cells can interact with pathogens that exist in the inner foreskin. This information provides a new vision that pathogens could play a role through the redundant prepuce; numerous studies have failed to find pathogens in prostates of patients who had chronic prostatitis/chronic pelvic pain syndrome （CP/CPPS）. However, no studies have reported an association between foreskin length and CP/CPPS. Hence, we conducted a retrospective case-control study of clinical data from 322 CP/CPPS patients （case group） and 341 nonCP/CPPS patients （control group）. Demographic characteristics, lifestyle factors, and foreskin lengths were collected and analyzed. Multivariate logistic regression was adopted to calculate the odds of foreskin length for CP/CPPS. According to the multivariate logistic regression results, when the foreskin length covered up more than half of the glans penis, the odds for CP/CPPS were higher with an increased foreskin （odds ratio （OR）： 1.66, 95% confidence interval （CI）： 1.04-2.66）. In comparison, when the glans penis was completely covered by the foreskin, the OR value increased to 1.86 （95% CI, 1.2-2.88）. The study results showed an association between foreskin length and the odds of CP/CPPS. When the foreskin length covered up more than half of the glans penis, there were greater odds for CP/CPPS. This possible mechanism might result from interaction between pathogens and DCs in the inner foreskin, consequently activating T-cells to mediate allergic inflammation in the prostate and producing the autoimmunizations causing CP/CPPS.

关键词： case control study chronic pelvic pain syndrome chronic prostatitis, prepuce

First‑principles computational insights into lithium battery cathode materials

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Electrochemical Energy Reviews 2022年第1期5卷 1-31页

作者： shu zhao Boya Wang Zihe Zhang Xu Zhang Shiman He Haijun Yu Institute of Advanced Battery Materials and Devices Faculty of Materials and ManufacturingBeijing University of TechnologyBeijing 100124China Key Laboratory of Advanced Functional Materials Ministry of EducationBeijing University of TechnologyBeijing 100124China

Lithium-ion batteries(LIBs)are considered to be indispensable in modern *** advances in LIBs depend on the development of new high-performance electrode materials,which requires a fundamental understanding of their ***-principles calculations have become a powerful technique in developing new electrode materials for high-energy–den-sity LIBs in terms of predicting and interpreting the characteristics and behaviors of electrode materials,understanding the charge/discharge mechanisms at the atomic scale,delivering rational design strategies for electrode materials,*** this review,we present an overview of first-principles calculation methods and highlight their valuable role in contemporary research on LIB cathode *** overview focuses on three LIB cathode scenarios,which are divided by their cati-onic/anionic redox ***,representative examples of rational cathode design based on theoretical predictions are ***,we present a personal perspective on the current challenges and future directions of first-principles calculations in LIBs.

关键词： First-principles calculations Cathode materials Lithium-ion batteries Anionic redox Cationic redox

Effects of Gambogic Acid on Regulation of Steroid Receptor Coactivator-3 in Lung Adenocarcinoma A549 Cells

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Chinese Journal of Cancer Research 2009年第1期21卷 68-73页

作者： Rui Li Yan Chen Wen-xiu shu Fei zhao Yuan Liu Lu Wen Department of Hematology Union Hospital Tongji Medical College Huazhong University Of Science and Technology Wuhan 430022 China

Objective： To investigate the effects of gambogic acid （GA） on the proliferation and apoptosis of Human lung adenocarcinoma A549 cells in vitro, as well as the regulation of steroid receptor coactivator-3 （SRC-3） to explore the relationship between them. Methods： The effect of GA on the growth of A549 cells was studied by MTT assay. Apoptosis was detected through Hoechst 33258 staining. RT-PCR and Western blot technologies were applied to assess the expression of SRC-3, whereas, the localization of SRC-3 was determined by using confocal microscopy method. Results： GA presented striking proliferation inhibition potency on A549 cells in vitro in a time- and dose-dependent manner, with the IC50 value for 24 h was 3.17±0.13 μmol/L. Hoechst 33258 staining showed that GA could induce apoptosis in A549 cells. Over-expression of SRC-3 was found in A549 cells, whereas the mRNA and protein expression levels of SRC-3 were significantly downregulated in A549 cells induced by GA in a dose-dependent manner. The disposition of SRC-3 was situated mainly at the nuclear. Conclusion： GA may exert its strong anti-leukemia effects through the regulation of the expression of SRC-3. It may be a new target for the therapy of lung cancer.

关键词： Gambogic acid Lung cancer Apoptosis SRC-3