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A Note on P m-Factorizable Topological Groups

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Journal of mathematical Research with Applications 2024年第2期44卷 209-212页

作者： chunjie ma Liangxue PENG Beijing University of Technology School of mathematics Department of mathematics Statistics and Mechanics

In this paper, we define a new class of P m-factorizable topological groups. A topological group G is called P m-factorizable if, for every continuous function f : G → M to a metrizable space M, one can find a perfect homomorphism π : G → K onto a second-countable topological group K and a continuous function g : K → M such that f = g■π. We show that a topological group G is P m-factorizable if and only if it is P R-factorizable. And we get that if G is a P m-factorizable topological group and K is any compact topological group, then the group G × K is P m-factorizable.

关键词： R-factorizable PR-factorizable m-factorizable Pm-factorizable M-factorizable

Research progress on space charge layer effect in lithium-ion solid-state battery

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Science China(Technological Sciences) 2022年第10期65卷 2246-2258页

作者： ZHANG Qian KONG YaQi GAO KeXin WEN YaJing ZHANG Qi FANG HuaYi ma chunjie DU YaPing Department of Applied Chemistry Xi’an University of TechnologyXi’an 710048China Tianjin Key Lab for Rare Earth materials and Applications Center for Rare Earth and Inorganic Functional MaterialsSchool of Materials Science and Engineering&National Institute for Advanced MaterialsNankai UniversityTianjin 300350China Shaanxi Lanwan Jinping New Energy Co. Ltd.Weinan 714000China

The development of lithium-ion solid electrolyte provides new ideas for solving the safety problems of secondary lithium-ion batteries(LIB) and, at the same time, the improvement of energy density. However, the consequent solid-solid interfacial problems have become a typical bottleneck to the performance. It has been considered that the space charge layer(SCL) formed at the interface to balance the sharp electrochemical inherent difference of properties is one of the most important factors that affect the ion transportation along and across the interface. Its existence may hinder ion transportation and increase the interfacial impedance but may also help to provide a new percolation path for lithium ion and so to enhance the ion migration. However the mechanism of SPL formation and its regulation on ion transport is not very clear, so it has raised a lot of attention and interest from LIB researchers. The purpose of this article is to try to gain some knowledge of SCL and, at the same time to browse through the related research in recent years. Hopefully, it may help those interested in solid electrolyte development for all-solidstate lithium-ion batteries(ASSB) in the future.

关键词： space charge layer interface solid electrolyte lithium-ion battery

Efficacy of Zhonglun'a-decoction-containing serum on fibroblastlike synoviocyte apoptosis in rats with collagen-induced arthritis via inhibiting Janus kinase/signal transducer and activator of transcription signaling pathway

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Journal of Traditional Chinese Medicine 2019年第2期39卷 181-190页

作者： Yang Yongsheng Dong Qiumei ma chunjie Zhang Yudi Li Yongle Chen Kun Zhang Suo College of Traditional Chinese Medicine Inner Mongolia Medical University Rheumatology Department Hohhot Hospital of Mongolian Medicine and Traditional Chinese Medicine College of Traditional Chinese Medicine Inner Mongolia Medical University Department of Combination of Chinese and Western Medicine the First Affiliated Hospital of Chongqing Medical University

OBJECTIVE: To investigate the efficacy of Zhonglun'a-decoction-containing serum(ZHONGL-CS)on the in vitro apoptosis of fibroblast-like synoviocytes(FLS) from rats with collagen-induced arthritis(CIA) by investigating the Janus kinase/signal transducer and activator of transcription(JAK/STAT) signaling ***: A CIA rat model was established using bovine type Ⅱ collagen. FLS were isolated, cultured and identified. A cell counting kit-8 was used to detect cell activity. The half maximal inhibitory concentration(IC50) was calculated. Experimental subjects were divided into control, CIA,ZHONGL-CS, JAK2 inhibitor AG490, and ZHONGLCS with AG490 groups. The in vitro cell cycle and apoptosis rate were detected in FLS by flow cytometry. Bcl-2-associated X protein(Bax), B-cell lymphoma 2(Bcl-2), caspase-3, cyclin D1, phosphorylated JAK2, STAT1, and STAT3 protein expressions in FLS were examined by Western blotting. JAK2, STAT1 and STAT3 mRNA levels were examined by quantitative real-time polymerase chain ***: Compared with the CIA group, FLS proliferation was inhibited, the FLS G0/G1 cell cycle was arrested, and the rate of FLS apoptosis was increased in the ZHONGL-CS group. In the ZHONGLCS group, the protein levels of Bcl-2 and cyclin D1 were reduced compared with the CIA group and the levels of Bax and caspase-3 in FLS were increased. In the ZHONGL-CS group, the expressions of JAK2, STAT1, and STAT3 mRNA and the levels of phosphorylated JAK2, STAT1, and STAT3 proteins were ***: ZHONGL-CS may induce FLS apoptosis in CIA rats. Activation of the JAK/STAT signaling pathway was inhibited in FLS in vitro.

关键词： Arthritis,rheumatoid Synoviocytes Apoptosis Janus kinases Zhonglun'a-decoctioncontaining serum

Recent advances on rare earths in solid lithium ion conductors

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Journal of Rare Earths 2021年第1期39卷 1-10,I0001页

作者： Qian Zhang Zhiqing Gao Xiaomeng Shi Chao Zhang Kang Liu Jun Zhang Liang Zhou chunjie ma Yaping Du Tianjin Key Lab for Rare Earth materials and Applications Center for Rare Earth and Inorganic Functional MaterialsSchool of Materials Science and Engineering&National Institute for Advanced MaterialsNankai UniversityTianjin 300350China State Key Laboratory of Eco-hydraulics Engineering in Northwest Arid Region Dept.of Civil and Environmental EngineeringDepartment of Applied ChemistryXi'an University of TechnologyXi'an 710048China College of Chemistry and Chemical Engineering and Inner Mongolia Key Lab of Nanoscience and Nanotechnology Inner Mongolia UniversityHohhot 010021China State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China Shaanxi J&R Optimum Energy Co. Ltd.Xi'an710075China

Solid lithium-ion-conducting material is the key component in the fabrication of next-gene ration all solid state lithium ion batteries(LIBs)which would exhibit superior safety and performance compared with the currently widely used ones that resort to essentially inflammable and volatile organic *** date,great efforts have been made in developing solid conductors with high lithium ion conductivity,such as polymers and inorganic *** earths play a very important role in this area and have attracted extensive interest since the recent decades for their unique properties in the realm of solidstate inorganic lithium-ion-conducting electrolyte *** this introduction,we focus on the role of rare earths in solid conductors for lithium ion,especially in a few most studied systems such as perovskites,garnets,silicates,borohydride and the recently reported halides in which rare earths act as a key framing ***,the effect of rare earths as dopants is also discussed in some recently studied ***,coordination,and size are the most important factors that influence the crystal structure and property of these lithium ion *** aim of this review is to highlight the great potentials of these unique elements of rare earths,and to help improve the performance of existing materials and explore new applications in the development of new LIBs with high performances.

关键词： Rare earths Lithium ion battery Conductivity Mechanism

Provable Efficient Certificateless Group Key Exchange Protocol

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Wuhan University Journal of Natural Sciences 2007年第1期12卷 41-45页

作者： CAO chunjie ma Jianfeng MOON Sangjae Key Laboratory of Computer Networks and InformationSecurity Ministry of Education Xidian University Xi＇ an 710071Shaanxi China Mobile Network Security Technology Research Center Kyungpook National University Daeyu 702701 Korea

Certificateless public key cryptography （CL-PKC） avoids the inherent escrow of identity-based cryptography and does not require certificates to guarantee the authenticity of public keys. Based on CL-PKC, we present an efficient constant-round group key exchange protocol, which is provably secure under the intractability of computation Diffie-Hellman problem. Our protocol is a contributory key exchange with perfect forward secrecy and has only two communication rounds. So it is more efficient than other protocols. Moreover, our protocol provides a method to design efficient constant-round group key exchange protocols and most secret sharing schemes could be adopted to construct our protocol.

关键词： group key exchange certificateless public key cryptography provable security bilinear pairings

Anti-hyperlipidaemic assay and LC-MS/MS determination of piperinic ester in rat

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Journal of Chinese Pharmaceutical Sciences 2018年第12期27卷 840-846页

作者： Bo Surina Dan Mu Ochir Sarangua chunjie ma College of Pharmacy Inner Mongolia Medical University Inner Mongolia Jinshan Development Zone Hohhot 010110 China Academy of Mongolian Medicine Inner Mongolia Medical University Inner Mongolia Jinshan Development Zone Hohhot 010110 China College of traditional Chinese medicine Inner Mongolia medical University Inner Mongolia Jinshan Development Zone Hohhot 010110 China

In the present study, we aimed to establish high-fat diet model for evaluating anti-hyperlipidaemic activity of GBA and to establish the HPLC-MS method for measuring the pharmacokinetics of GBA in rat blood plasma and liver after oral administration. Rats were orally administrated with GBA at the dose of 50mg/kg body weight. GBA concentrations in blood plasma and liver were detected by HPLC from 0.5–10 h post administrations. The pharmacokinetic parameters were analyzed by the DAS1.0Software. The concentration-time curves of the plasma GBA and liver GBA wereconformed to two-compartment model. GBA was rapidly absorbed in the gastrointestinal tract and could be detected in plasma and liver 0.5 h after oral administration.

关键词： Long pepper Piperinic ester GBA Antihyperlipidaemic activity LC-MS/MS analysis

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光湿复合老化对消防服用织物性能的影响

纺织学报 2015年第9期36卷 82-88页

作者：马春杰崔志英东华大学服装艺术.设计学院上海200051

为进一步探讨多种环境因素对消防服用织物性能的影响,设计光湿复合老化实验,测试织物的表面色差、物理机械性能以及TPP值。结果表明:织物表面色彩随着光照时间的延长而加深;润湿程度越大,色差值也越大(P<0.05);光照时间越长,织物的撕破... 详细信息

为进一步探讨多种环境因素对消防服用织物性能的影响,设计光湿复合老化实验,测试织物的表面色差、物理机械性能以及TPP值。结果表明:织物表面色彩随着光照时间的延长而加深;润湿程度越大,色差值也越大(P<0.05);光照时间越长,织物的撕破强力越小(P<0.001),光照60 min后PBI织物的干强保持率最高,约65%,而国产芳纶的仅为50%左右,纬向干强已低于标准值;光老化对断裂强力影响不显著;随着润湿程度的增加,织物的机械强力显著减小(P<0.01),饱和润湿状态下撕破强力减小率最大为55.14%;织物经光湿复合老化后热防护性能反而变好。

关键词：消防服光湿复合老化物理性能热防护性能

用Weibull方法评价化学介质对PBO纤维统计强度的影响

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复合材料学报 2005年第3期22卷 16-20页

作者：马春杰宁荣昌李琳卢忠远西北工业大学应用化学系西安710072

以Weibull统计模型和最弱连接理论为基础,研究了经6种化学介质处理的5cm长PBO单纤维的统计强度及强度分布,并与未经处理的PBO纤维比较。用SEM对纤维表面进行了观察,分析了其强度变化的原因。结果表明,酸性介质对PBO纤维强度及强度分散... 详细信息

以Weibull统计模型和最弱连接理论为基础,研究了经6种化学介质处理的5cm长PBO单纤维的统计强度及强度分布,并与未经处理的PBO纤维比较。用SEM对纤维表面进行了观察,分析了其强度变化的原因。结果表明,酸性介质对PBO纤维强度及强度分散性影响较大,且盐酸和硫酸对纤维的破坏有不同的机理。

关键词： PBO纤维 Weibull 统计强度

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基于迁移学习的乳腺病理图片分类研究

微型电脑应用 2024年第8期40卷 42-45,50页

作者：马春洁商洛学院数学与计算机应用学院陕西商洛726000

为了辅助乳腺组织病理性切片的良恶性诊断,使用BreakHis公开数据集进行乳腺组织病理图片分类研究。考虑到数据的染色差异和数量不足,分别进行数据的染色归一化和数据增强预处理;采用迁移学习,将微调后的ResNet 50模型用于对预处理后的... 详细信息

为了辅助乳腺组织病理性切片的良恶性诊断,使用BreakHis公开数据集进行乳腺组织病理图片分类研究。考虑到数据的染色差异和数量不足,分别进行数据的染色归一化和数据增强预处理;采用迁移学习,将微调后的ResNet 50模型用于对预处理后的数据进行分类,得到最高分类准确率为99.60%的结果;将所得结果与现有研究结果进行比较,证明所提方法对处理乳腺组织图片分类问题具有高效性。

关键词：乳腺病理图片染色归一化数据增强图片分类