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Chinese Physics B 2019年第12期28卷 113-117页

作者： yi-huan Wei Department of Physics Bohai UniversityJinzhou 121000China

We propose a regular spherically symmetric spacetime solution with three parameters in Einstein gravity coupled to nonlinear electrodynamics(NED), which describes the NED black hole with electric charge. It is found that the system enclosed by the horizon of NED spacetime satisfies the first law of thermodynamics. In order to obtain the NED spacetime with only electric charge, the case of two parameters taking the same value is considered. In this case, we express the mass of the NED spacetime as a function of the entropy and electric charge of the NED black hole, give the Smarr-like formula and the approximate Smarr formula for the mass of NED spacetime.

关键词： regular nonlinear electrodynamics(NED) spacetime NED black hole with electric charge first law of thermodynamics Smarr formula

Thermodynamic Properties of a Reissner–Nordström Quintessence Black Hole

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Chinese Physics Letters 2011年第10期28卷 17-19页

作者： WEI yi-huan CHU Zhong-Hui Department of Physics Bohai UniversityJinzhou 121000

The first law of thermodynamics for the three horizons of Reissner–Nordström quintessence(RNQ)spacetime is *** a general process of RNQ spacetime,the expressions for the radius changes of the three horizons are *** only mass changes,the heat fluxes through the three horizons are equivalent and no heat is left in the black hole ***,a further discussion on the thermal properties of an RNQ black hole is given.

关键词： horizon Reissner black

PREPARATION OF NANOMETER ZrO_2-8% Y_2O_3 POWDERS BY AZEOTROPIC DISTILLATION PROCESSING

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中国有色金属学会会刊：英文版 1999年第1期9卷 46-49页

作者： yin, Bangyao Wang, Lingsen Zhang, Jinshen huan, yi Yang, Yong Ling, Jianliang Central South Univ of Technology Changsha China

１ＩＮＴＲＯＤＵＣＴＩＯＮＩｔｉｓｗｅｌｋｎｏｗｎｔｈａｔｓｉｎｔｅｒｉｎｇｔｅｍｐｅｒａｔｕｒｅｗｉｌｂｅｇｒｅａｔｌｙｄｅｃｒｅａｓｅｄｄｕｅｔｏｐｒｅｐａｒａｔｉｏｎｏｆｕｌｔｒａｆｉｎｅａｎｄｈｏｍｏｇｅｎ... 详细信息

１ＩＮＴＲＯＤＵＣＴＩＯＮＩｔｉｓｗｅｌｋｎｏｗｎｔｈａｔｓｉｎｔｅｒｉｎｇｔｅｍｐｅｒａｔｕｒｅｗｉｌｂｅｇｒｅａｔｌｙｄｅｃｒｅａｓｅｄｄｕｅｔｏｐｒｅｐａｒａｔｉｏｎｏｆｕｌｔｒａｆｉｎｅａｎｄｈｏｍｏｇｅｎｅｏｕｓｐｏｗｄｅｒｓ．Ａｓａｒｅ...

关键词： ZrO 2 8%Y 2O 3 nanometer powder chemical coprecipitation method azeotropic distillation hard agglomerate

Recent advances in nano scaffolds for bone repair

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Bone Research 2016年第4期4卷 206-216页

作者： huan yi Fawad Ur Rehman Chunqiu Zhao Bin Liu Nongyue He State Key Laboratory of Bioelectronics (Chien-Shiung Wu Lab) School of Biological Science and Medical Engineering Southeast UniversityNanjing China Department of Biomedical Engineering School of Basic Medical Sciences Nanjing Medical University Nanjing China Hunan Key Laboratory of Green Chemistry and Application of Biological Nanotechnology Hunan University of Technology Zhuzhou China

Biomedical applications of nanomaterials are exponentially increasing every year due to analogy to various cell receptors, ligands, structural proteins, and genetic materials(that is, DNA). In bone tissue, nanoscale materials can provide scaffold for excellent tissue repair via mechanical stimulation, releasing of various loaded drugs and mediators, 3D scaffold for cell growth and differentiation of bone marrow stem cells to osteocytes. This review will therefore highlight recent advancements on tissue and nanoscale materials interaction.

关键词： bone Recent advances in nano scaffolds for bone repair

A three-dimensional crosslinked chitosan sulfate network binder for high-performance Li-S batteries

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Journal of Energy Chemistry 2021年第5期30卷 171-178页

作者： Jianwen Feng huan yi Zhiwen Lei Jun Wang Hongbo Zeng Yonghong Deng Chaoyang Wang Research Institute of Materials Science South China University of TechnologyGuangzhou 510640GuangdongChina Department of Materials Science&Engineering Academy for Advanced Interdisciplinary StudiesGuangdong Provincial Key Laboratory of Energy Materials for Electric PowerSouthern University of Science and Technology(SUSTech)Shenzhen 518055GuangdongChina Department of Chemical and Materials Engineering University of AlbertaEdmontonAB T6G 1H9Canada

Poor cycling performance caused by the shuttle effect of polysulfides is the main obstacle in the development of advanced lithium-sulfur(Li-S)*** polymer binders with polar groups can effectively adsorb polysulfides chemically,thereby suppressing the shuttle ***,a robust three-dimensional crosslinked polymer network,which demonstrates excellent mechanical property and strong affinity for polysulfides,is prepared by the aldimine condensation and coordination *** crosslinked chitosan sulfate network(CCSN)significantly enhances the cycling performance and rate capability of the sulfur *** CCSN-based sulfur cathode exhibits a high initial discharge capacity of 824 m Ah g^(-1) with only 0.082%average capacity loss per cycle at 1 *** a high rate of 4 C,the cathode exhibits a high capacity retention of 84.8%after 300 ***,the CCSN-based sulfur cathode exhibits an excellent cycling performance at a high sulfur loading of 2.5 mg cm^(-2),which indicates the excellent mechanical strength and binding performance of the CCSN binder for high-energy density Li-S *** study demonstrates a viable approach for developing high-performance Li-S batteries for practical application.

关键词： Chitosan Crosslinked binder Polysulfide Lithium-sulfur battery

The effects and economic consequences of cutting R&D tax incentives

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China Journal of Accounting Research 2018年第4期11卷 367-384页

作者： Ming-Chin Chen huan-yi Li Chengchi University

Research has documented the stimulating effect of R&D tax credits on R&D expenditure when enacting an R&D tax credit or raising the credit rate. However, the potential adverse effects and consequences of reducing R&D tax incentives remain unexamined. Using a cut in R&D tax incentives in Taiwan,we document the adverse effect of reducing the R&D credit rate on corporate R&D expenditure. The reduced R&D credit rate has a negative impact on the relation between corporate R&D expenditure and firm value. Our results highlight the adverse effects and economic consequences of reducing R&D tax incentives in an emerging economy.

关键词： R&D credit rate R&D investment Firm value

Fully Chemical Recyclable Poly(γ-butyrolactone)-based Copolymers with Tunable Structures and Properties

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Chinese Journal of Polymer Science 2022年第5期40卷 456-461页

作者： yi-huan Liu Xin Yuan Jia-Qi Wu Ming-Xuan Luo Xin Hu Ning Zhu Kai Guo Collegeof Biotechnology and Pharmaceutical Engineering Nanjing Tech UniversityNanjing 211800China Collegeof Materials Science and Engineering Nanjing Tech UniversityNanjing 211800China State Key Laboratory of Materials-Oriented Chemical Engineering Nanjing Tech UniversityNanjing 211800China

The emerging chemical recyclable polymers,such as poly(γ-butyrolactone)(PGBL)and poly((R)-3,4-trans six-membered ring-fused GBL)(P((R)-M)),provide a good solution to the plastic ***,these homopolymers suffer from limited structures and ***,we reported a fully chemical recyclable copolymer P(GBL-co-((R)-M))through ring-opening copolymerization(ROCOP)of GBL and(R)-*** employing organomagnesium as the catalyst and regulating the reaction conditions,the chemical structures of copolymers were wellcontrolled(GBL content=13%-78%,Mn=6560-15600 g/mol,DM=1.08-1.59).The resultant P(GBL-co-((R)-M))exhibited fully chemical recyclability,which rapidly and quantitatively depolymerized into initial GBL and(R)-M monomer through *** varying GBL content,tunable thermal properties were achieved for P(GBL-co-((R)-M)).The onset decomposition temperatures of copolymers varied from 193°C to 234°C.A linear evolution of glass transition temperature(T_(g))of P(GBL-co-((R)-M))versus GBL content was obtained as following equation of Tg=-1.06×GBL mol%×100+*** hope that the reported fully chemical recyclable copolymers with tunable structures and properties would serve as the candidate material for sustainable applications.

关键词： Poly(γ-butyrolactone)-based copolymers Ring-opening copolymerization Chemical recyclability Organomagnesium

Establishment of a selective evaluation method for DPP4 inhibitors based on recombinant human DPP8 and DPP9 proteins

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Acta Pharmaceutica Sinica B 2014年第2期4卷 135-140页

作者： Jinglong Liu yi huan Caina Li Minzhi Liu Zhufang Shen State Key Laboratory of Bioactive Substances and Functions of Natural Medicines Diabetes Research CenterInstitute of Materia MedicaChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100050China

Dipeptidyl peptidase 4(DPP4)is recognised as an attractive anti-diabetic drug target,and several DPP4 inhibitors are already on the *** members of the same gene family,dipeptidyl peptidase 8(DPP8)and dipeptidyl peptidase 9(DPP9)share high sequence and structural homology as well as functional activity with ***,the inhibition of their activities was reported to cause severe ***,the development of DPP4 inhibitors that do not have DPP8 and DPP9 inhibitory activity is critical for safe anti-diabetic *** achieve this goal,we established a selective evaluation method for DPP4 inhibitors based on recombinant human DPP8 and DPP9 proteins expressed by Rosetta *** this method,we used purified recombinant 120 kDa DPP8 or DPP9 protein from the Rosetta expression *** optimum concentrations of the recombinant DPP8 and DPP9 proteins were 30 ng/mL and 20 ng/mL,respectively,and the corresponding concentrations of their substrates were both 0.2 mmol/*** method was highly reproducible and reliable for the evaluation of the DPP8 and DPP9 selectivity for DPP4 inhibitor candidates,which would provide valuable guidance in the development of safe DPP4 inhibitors.

关键词： DPP4 DPP8 DPP9 Inhibitor Selective evaluation method

Kiselev黑洞的热力学性质和物质吸积特性

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物理学报 2019年第6期68卷 21-26页

作者：魏益焕渤海大学数理学院物理系锦州121000

本文考虑带有黑洞视界和宇宙视界的Kiselev时空.研究以黑洞视界和宇宙视界为边界的系统的热力学性质.统一地给出了两个系统的热力学第一定律;在黑洞视界半径远小于宇宙视界半径的情况下,近似地计算了通过宇宙视界和黑洞视界的热能.然后... 详细信息

本文考虑带有黑洞视界和宇宙视界的Kiselev时空.研究以黑洞视界和宇宙视界为边界的系统的热力学性质.统一地给出了两个系统的热力学第一定律;在黑洞视界半径远小于宇宙视界半径的情况下,近似地计算了通过宇宙视界和黑洞视界的热能.然后,探讨Kiselev时空的物质吸积特性.在吸积能量密度正比于背景能量密度的条件下给出黑洞的吸积率,讨论了黑洞吸积率与暗能量态方程参数的关系.

关键词： Kiselev黑洞物质吸积热力学性质

A cell-based fluorescent glucose transporter assay for SGLT2 inhibitor discovery

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Acta Pharmaceutica Sinica B 2013年第2期3卷 97-101页

作者： yi huan Linyi Li Quan Liu Shuainan Liu Zhufang Shen State Key Laboratory of Bioactive Substances and Functions of NaturalMedicines Diabetes Research CenterInstituteof Materia MedicaChinese Academy of Medical Science and Peking Union Medical CollegeBeijing 100050China

The sodium/glucose cotransporter 2(SGLT2)is responsible for the majority of glucose reabsorption in the kidney,and currently,SGLT2 inhibitors are considered as promising hypoglycemic agents for the treatment of type 2 diabetes *** constructing CHO cell lines that stably express the human SGLT2 transmembrane protein,along with a fluorescent glucose transporter assay that uses 2-[N-(7-nitrobenz-2-oxa-l,3-diazol-4-yl)amino]2-deoxyglucose(2-NBDG)as a glucose analog,we have developed a nonradioactive,cell-based assay for the discovery and characterization of SGLT2 inhibitors.

关键词： SGLT2 inhibitor NBDG Type 2 diabetes mellitus Kidney