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Boron nitride nanofibers enhanced composite PEO-based solid-state polymer electrolytes for lithium metal batteries

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Chinese Chemical Letters 2024年第6期35卷 216-221页

作者： Qianqian Song Yunting Zhang Jianli Liang si liu Jian Zhu Xingbin Yan School of Materials Science and Engineering Sun Yat-Sen UniversityGuangzhou 510275China College of Physics and Materials Science Tianjin Normal UniversityTianjin 300387China Department of Chemistry&Center of Super-Diamond and Advanced Films(COSDAF) City University of Hong KongHong Kong 999077China Guangdong-Hong Kong-Macao Joint Laboratory for Intelligent Micro-Nano Optoelectronic Technology School of Physics and Optoelectronic EngineeringFoshan UniversityFoshan 528225China

Polyethylene oxide(PEO)-based solid-state polymer electrolytes(SPEs)are limited by their poor cyclic stability and inferior ionic conductivity for applicating in high-safety,long-cycling and high-energy-density lithium metal ***,porous boron nitride nanofibers(BNNFs)are filled into PEO-based SPE,which significantly suppresses Li dendrites growth and enhances the electrochemical performance of Li metal *** with high porosity have more active sites to connect with PEO,which can effectively reduce the crystallinity of the PEO matrix and enhance its ionic ***,owing to the hardness and good stability of BNNFs,BNNFs/PEO/Li TFsi electrolyte exhibits a wider electrochemical window,better mechanical property and higher thermal stability compared with PEO/Li TFsi ***,the Li symmetric cell composed of 1%BNNFs/PEO/Li TFsi performs good cyclic stability(>1800 h),and the Li||1%BNNFs/PEO/Li TFsi||LFP full battery shows obviously improved performances in charge-discharge polarization voltage,discharge specific capacity,rate performance and cyclic stability than the Li||PEO/Li TFsi||LFP battery.

关键词： Solid-state polymer electrolyte Boron nitride nanofibers Lithium metal battery Ionic conductivity Li dendrite

Homochirality in Ferroelectrochemistry

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Chinese Journal of Chemistry 2024年第10期42卷 1133-1144页

作者： Hang Peng Jun-Chao Qi Yu-si liu Jia-Mei Zhang Wei-Qiang Liao Ren-Gen Xiong Ordered Matter Science Research Center Nanchang UniversityNanchangJiangxi 330031China

What is the most favorite and original chemistry developed in your research group?We originally proposed the design principle for molecular ferroelectrics:ferroelectrochemistry,including quasi-spherical theory,the introduction of homochirality,and H/F *** changed the blind search for molecular ferroelectrics into targeted chemical design,which will develop into a new discipline.

关键词： Molecular ferroelectrics Homochirality Ferroelectricity Chemical design Point groups

A universal polymer-assisted route to fabricate Zr-doped TiO2 nanocomposite: boosting reactive desulfurization

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Tungsten 2024年第3期6卷 596-609页

作者： Yue Du Ping Li Zhi-Yi Zhong Wen-Xue Chen Yi-si liu Yun-Long Xie Li-Na Zhou Kai Wang Hubei Key Laboratory of Photoelectric Materials and Devices College of Material Science and Engineering Hubei Normal University National Laboratory of Solid State Microstructures Nanjing University College of Urban and Environmental Sciences Huangshi Key Laboratory of Prevention and Control of Soil Pollution Hubei Normal University School of Chemistry Chemical Engineering and Biotechnology Nanyang Technological University

A series of transition metal ion-doped TiO2composites were prepared by polyethyleneimine-assisted solvent-free *** to the similar electronegativity and ionic radius of Ti and Zr ions,the introduction of Zr element to TiO2can effectively improve its surface acidity and introduce more defect sites on the ***-fabricated Zr-doped TiO2nanocomposite exhibits the formation of Zr-Ti bond,strong surface acidity,connected mesoporous channels,and relatively high *** remarkable properties contribute to its adsorption-oxidation-desulfurization capacity toward thiophene-type sulfides,which can remove 500 ×10-6dibenzothiophene from the model fuel within 100 min at low reaction *** polymer-induced self-assembly method can reduce organic solvent usage,pollutant emissions,and energy consumption,which provides an efficient and practical way to prepare porous metal oxide-based catalysts in future.

关键词： Oxidative desulfurization Transition metal ion-doped TiO 2 nanocomposite Dibenzothiophene Solvent-free self-assembly method

Lecithin-cholesterol acyltransferase is a potential tumor suppressor and predictive marker for hepatocellular carcinoma metastasis

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World Journal of Gastrointestinal Oncology 2024年第8期16卷 3651-3671页

作者： Yan Li Li-Na Jiang Bo-Kang Zhao Mei-Ling Li Yi-Yun Jiang Yi-si liu Shu-Hong liu Li Zhu Xin Ye Jing-Min Zhao Department of Pathology and Hepatology The Fifth Medical Center of Chinese PLA General HospitalBeijing 100039China Department of Hepatology Center of Infectious Diseases and Pathogen BiologyThe First Hospital of Jilin UniversityChangchun 130061Jilin ProvinceChina First Department of Liver Disease Center Beijing Youan HospitalCapital Medical UniversityBeijing 100069China Key Laboratory of Pathogenic Microbiology and Immunology Institute of MicrobiologyChinese Academy of SciencesBeijing 100101China Savaid Medical School University of Chinese Academy of SciencesBeijing 100190China Department of Pathology The Fifth Medical Center of Chinese PLA General HospitalBeijing 100039China

BACKGROUND Hepatocellular carcinoma(HCC)is a major cause of cancer mortality worldwide,and metastasis is the main cause of early recurrence and poor ***,the mechanism of metastasis remains poorly *** To determine the possible mechanism affecting HCC metastasis and provide a possible theoretical basis for HCC *** The candidate molecule lecithin-cholesterol acyltransferase(LCAT)was screened by gene microarray and bioinformatics *** expression levels of LCAT in clinical cohort samples was detected by quantitative realtime polymerase chain reaction and western *** proliferation,migration,invasion and tumor-forming ability were measured by Cell Counting Kit-8,Transwell cell migration,invasion,and clonal formation assays,*** formation was detected in nude mice after LCAT gene knockdown or *** immunohistochemistry for Ki67,E-cadherin,N-cadherin,matrix metalloproteinase 9 and vascular endothelial growth factor were performed in liver tissues to assess the effect of LCAT on *** set enrichment analysis(GSEA)on various gene signatures were analyzed with GSEA version *** machine-learning algorithms(random forest,support vector machine,and logistic regression)were applied to predict HCC metastasis in The Cancer Genome Atlas and GEO *** LCAT was identified as a novel gene relating to HCC metastasis by using gene microarray in HCC *** was significantly downregulated in HCC tissues,which is correlated with recurrence,metastasis and poor outcome of HCC *** analysis indicated that LCAT inhibited HCC cell proliferation,migration and invasion both in vitro and in *** data showed that LCAT was negatively associated with HCC size and metastasis(HCC size≤3 cm vs 3-9 cm,P9 cm,Psion of HCC cell lines via PI3K/A

关键词： Lecithin-cholesterol acyltransferase Tumor suppressor gene Hepatocellular carcinoma PI3K/AKT/mTOR Predicting model

基于改进K均值聚类的光谱重建训练样本选择研究

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光谱学与光谱分析 2024年第1期44卷 29-35页

作者：刘振刘莉樊硕赵安然刘思鲁曲阜师范大学传媒学院山东日照276800 曲阜师范大学工学院山东日照276800

光谱反射率重建过程中,训练样本的选择方法及样本容量与重建精度密切相关,寻找一种高效的训练样本选择方法是光谱重建的目标之一。K均值聚类计算复杂度小,计算效率高,但因聚类初始值选择的随机性,以及离群点的影响致使聚类结果不稳定,... 详细信息

光谱反射率重建过程中,训练样本的选择方法及样本容量与重建精度密切相关,寻找一种高效的训练样本选择方法是光谱重建的目标之一。K均值聚类计算复杂度小,计算效率高,但因聚类初始值选择的随机性,以及离群点的影响致使聚类结果不稳定,进而影响光谱重建的精度。基于此,提出了一种改进K均值聚类的训练样本选择方法。首先,将训练样本集的几何中心作为聚类中心的初始值;其次,基于高斯函数构建样本空间分布概率密度函数,并以欧几里德(欧式)距离作为其他聚类中心的度量依据;最后,在训练样本集中,基于簇内平方差度量光谱反射率样本间的相似度,将每个聚类子集中与中心距离最近的样本作为训练样本。为验证该方法的有效性,通过主成分分析法进行光谱重建。实验结果表明,所提的方法相较于传统的方法,光谱重建精度有一定的提高,重建光谱的平均均方根误差小于4%, CIE DE2000色差小于3.756 7。提出的改进的K均值聚类的训练样本选择方法,能够一定程度上提高了光谱重建精度,基本满足复制再现图像的要求。

关键词：光谱重建训练样本聚类算法改进K均值聚类

Interaction and coordinated development between desertification control and social economy in Xizang,China

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Ecological Economy 2024年第2期20卷 160-177页

作者： ZHU Cai-xia ZHENG Yu-jie liu si-yu QIN Tao School of Economics and Management Beijing Forestry UniversityBeijing 100083CHINA

Based on the general requirements of the coordinated development of"ecological livable"and"affluent life"in the rural revitalization strategy,the evaluation index system of desertification control was constructed,the interaction between desertification control and regional social economy and the internal space-time coordination mechanism were explored,and the quality of desertification control and its coordination degree with regional economic development were quantitatively *** decoupling mechanism of desertification governance society economy system were analyzed,and the high level for the government to promote desertification governance,constructing ecological economy coordinated development pattern to provide decision basis to Xizang desertification governance-social economic system interaction and coupling coordination development as the research object,introducing the coupling decoupling model to measure the coupling coordination model and system coordination and decoupling *** control in Xizang shows a trend of gradual improvement,but the overall level is still not high and there is a lot of room for *** coupling coordination degree of desertification control-social and economic system is in a steady fluctuation trend,rising from D value less than 0.55 in 2004 to 0.87 in 2018,in a state of coordinated development(good),and grey prediction analysis shows that D value is in a continuous *** coupling coordination degree of the six prefecture-level cities in Xizang and Ngari region is different in time and space,but the overall development trend is *** development index of desertification control and the socio-economic development index show the interaction of strong decoupling,strong negative decoupling and weak decoupling,and there are interaction effects of desertification control,economic development and social development at different scales.

关键词： desertification control coupling coordination model decoupling model economic development

习近平总书记关于推动长江经济带发展重要论述的内涵要义、内蕴方法及创新贡献

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改革 2024年第2期 1-14页

作者：刘嗣方重庆社会科学院

推动长江经济带发展是关系国家发展全局的重大战略,对推进强国建设、民族复兴具有重要意义。习近平总书记关于推动长江经济带发展重要论述是习近平新时代中国特色社会主义思想的重要组成部分。习近平总书记关于推动长江经济带发展重要... 详细信息

推动长江经济带发展是关系国家发展全局的重大战略,对推进强国建设、民族复兴具有重要意义。习近平总书记关于推动长江经济带发展重要论述是习近平新时代中国特色社会主义思想的重要组成部分。习近平总书记关于推动长江经济带发展重要论述的内涵要义体现在:生态优先、绿色发展是长江经济带发展的战略定位,促进区域协调发展是长江经济带发展的重要举措,创新引领发展是长江经济带发展的动力引擎,构建新发展格局是长江经济带发展的战略支撑,繁荣发展长江文化是长江经济带发展的内在要求,统筹发展和安全是长江经济带发展的坚实保障。坚持系统观念、坚持改革创新、坚持发展和保护相统一、坚持政府和市场相结合、坚持底线思维、坚持久久为功是习近平总书记关于推动长江经济带发展重要论述蕴含的科学方法。习近平总书记关于推动长江经济带发展重要论述的创新贡献体现在:展现以新发展理念为指引推进长江经济带科学保护、开发和治理,贡献了破解超大流域发展和治理难题的原创经验;展现实践中国式现代化国家治理理论,形塑了超大流域发展和治理的崭新格局;展现发挥黄金水道“黄金经济带”效应,打造了超大流域发展和治理的实践样本;展现构建新发展格局、统筹发展和安全,强化了超大流域发展和治理的支撑保障;展现探索中国特色自主知识体系,推动了超大流域发展和治理的学科体系、学术体系和话语体系建构;展现促进世界大江大河流域发展和治理全球文明交流互鉴,拓展了超大流域发展和治理的中华民族现代文明意蕴。

关键词：长江经济带发展生态优先绿色发展科学方法创新贡献

在论诗与论理之间《:朱子语类》论诗的话语意义

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求是学刊 2024年第3期51卷 150-159页

作者：刘思宇北京师范大学文学院北京100875 北京师范大学文艺学研究中心北京100875

《朱子语类》论诗有其独特面貌,朱熹有意选取语录体诗话的方式进行言说,着意呈现诗歌创作中面向生活审美的浑融气象,在论诗观念上体现出诗话语境下诗与理的互斥互塑,并在此基础上着力推崇豪壮诗风,体现出朱熹系统性的审美观念和话语策... 详细信息

《朱子语类》论诗有其独特面貌,朱熹有意选取语录体诗话的方式进行言说,着意呈现诗歌创作中面向生活审美的浑融气象,在论诗观念上体现出诗话语境下诗与理的互斥互塑,并在此基础上着力推崇豪壮诗风,体现出朱熹系统性的审美观念和话语策略。康德对崇高审美的分析将朱熹原本诉诸审美经验和直觉体悟的文本呈现进行理性化理解,合理解释了为何朱熹所推崇的豪壮诗风较之其他风格更能体现“近道气象”,更为具体地揭示出朱熹理想诗风的重要特点。《朱子语类》论诗不仅体现出朱熹不同于一般理学家的审美修养,更是系统地体现出他在审美层面对体道方式的根本性探索及其对此种话语方式之于体道意义的自觉。

关键词：朱熹《朱子语类》诗话审美

Study on Antioxidant Enzyme Activity and Physiology and Biochemistry of Solanum nigrum L. under Glyphosate Stress

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Agricultural Biotechnology 2024年第2期13卷 1-4,7页

作者： si liu Tingting ZOU Wenshuai ZENG Zihan MEI Chenzhong JIN Yihong HU College of Agriculture and Biotechnology Hunan University of HumanitiesScience and TechnologyLoudi 417000China

[Objectives] This study was conducted to investigate the scientific prevention and control of Solanum nigrum L. [Methods] Through experiments on S. nigrum from different sources, it was found that glyphosate stress had significant effects on antioxidant enzyme activity and oxidative damage of sensitive S. nigrum plants. [Results] Sensitive S. nigrum showed oxidative damage under glyphosate stress, while resistant S. nigrum responded to adversity damage by improving its antioxidant enzyme activity. The experimental results showed that the antioxidant enzymes and reduced glutathione of S. nigrum had certain metabolic detoxification effects under glyphosate stress. [Conclusions] This study provides a theoretical basis for scientific prevention and control of S. nigrum , and has a certain reference value for revealing the glyphosate resistance mechanism of S. nigrum .

关键词： Glyphosate Solanum nigrum L. Antioxidant enzyme Malondialdehyde Glutathione