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Polybenzimidazolium-reinforced polyimide separators to inhibit dendrites for high-security lithium-ion batteries

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Science China Chemistry 2025年

作者： Guohua Sun Jiaqi Cui Qingsong Zhang Yisong Zhou Xinluo li Yingying Zhang Zhanao Zhang Xin Zhang Jiantao Fan Pengpeng li lianlong Hou Nanjun chen Hebei Key Laboratory of Flexible Functional Materials School of Materials Science and Engineering Hebei University of Science and Technology State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical Technology Academy for Advanced Interdisciplinary Studies Southern University of Science and Technology State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical Engineering Xiamen University

lithium dendrite formation poses a significant safety hazard in lithium-ion batteries（liBs）, severely impeding their widespread adoption and further technological advancements. Here, we present a novel quaternized polybenzimidazolium（q-PBI） to armor polyimide（PI） nanofiber separator（q-PBI@PI）, in which the q-PBI containing lithiophilicity and anionphilicity sites serves as the multifunctional nano-layers to suppress the li dendrite and reinforce the mechanical properties of PI nanofiber ***, the q-PBI@PI separator displays an unprecedented mechanical strength of 82.8 MPa, significantly outperforming previously reported PI nanofiber membranes（typically below 50.0 MPa）. Besides, we demonstrate that the q-PBI@PI separator simultaneously possesses low nucleation overpotential（59 mV） and exceptional average coulombic efficiency due to the suppression of li dendrite. Importantly, q-PBI@PI-based li||li battery enables a stable li plating-stripping at 1.0 m A cm-2for600 h. Attributing to these exceptional merits, the armored PI separator-based liBs display remarkable specific capability and capacity retention. The density function theory calculations reveal that q-PBI is conducive to the desolvation of li+and can immobilize li+and PF6-ions near affinity sites of PI nanofibers for inhibiting the formation of li dendrites. Our work paves a new avenue for the design of next-generation high-performing separators in liBs.

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High-precision magnetic field measurement system based on a coherent population trapping magnetometer onboard the SATech-01 satellite

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Science China Technological Sciences 2025年

作者： Hongbo XUE Wei SONG Haoran ZHAO Yiteng ZHANG Shanzhi YE Jindong WANG Ran TAO Peng SANG Keli chen Xingzi BI Bingjun chenG Bin ZHOU Yongliang XUE Yingying TANG liu liU Jinsong li Xiaocheng ZHU Baoquan li Jinguo liU Wen chen Xiaofeng ZHANG Yonghe ZHANG Lei li State Key Laboratory of Space Weather National Space Science Center Chinese Academy of Sciences Key Laboratory of Solar Activity and Space Weather National Space Science Center Chinese Academy of Sciences Key Laboratory of Electronics and Information Technology for Space Systems National Space Science Center Chinese Academy of Sciences State Key Laboratory of Robotics Shenyang Institute of Automation Chinese Academy of Sciences Innovation Academy for Microsatellites Chinese Academy of Sciences

On July 27, 2022, a high-precision system for measuring the magnetic field based on a coherent population trapping magnetometer（referred to as the CPT system） was launched onboard the Space Advanced Technology demonstration satellite（SATech-01） by a ZK-1A rocket. The payload comprises a scalar coherent population trapping magnetometer（CPTM）, triaxial anisotropic magnetoresistance magnetometer（AMRM）, and nano star tracker mounted on a non-magnetic telescopic tubular mast. This configuration enables synchronized measurement of scalar and vector geomagnetic fields, as well as the attitude,making the payload with its compact sensors suitable for applications on miniature satellite platforms. On November 7, 2022,the novel telescopic tubular mast was deployed in orbit, extending to a length of 5.28 m. The CPTM, an absolute scalar magnetometer with an omnidirectional sensor, is the first China-developed quantum/atomic magnetometer successfully operating in space. In orbit, the CPTM has sensitivity of ～10 pT/Hz1/2and can automatically operate under complex magnetic field variations. The difference between the scalar fields obtained using the CPTM and CHAOS model has a mean deviation of–3.73 n T and a standard deviation of 26.11 nT（1σ）, without on-orbit calibration or correction. The miniaturized AMRM has a sensitivity of ～0.3 n T/Hz1/2and maintains stable and reliable operation in orbit. The low-power and miniaturized nano star tracker has a measurement uncertainty of 14.23″（1σ） in orbit. The mission has realized the on-orbit technical verification of the integrated and synchronized detection of the vector magnetic field and attitude and fully validated the system's performance,automation level, and reliability.

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MeJA-Induced Transcriptional Reprogramming in Bupleurum kaoi

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MeJA-Induced Transcriptional Reprogramming in Bupleurum kaoi

Skeletal muscle-specific Bambi deletion induces hypertrophy and oxidative switching coupling with adipocyte thermogenesis against metabolic disorders

2006海峡两岸暨CSNR全国第七届天然药物资源学术研讨会

作者： Wen-Yu liu~1,Yi-Jiun chen~1,li-ru chen~1,cheng-Yu Lee~2,and Tsai-Yun lin~1 (1 Department of life Science and Institute of Bioinformatics and Structural Biology, National Tsing Hua University,Hsinchu 30013,Taiwan 2 Biomedical Engineering Center,Industrial Technology Research Institute, Hsinchu 30013,Taiwan)

The healing properties of natural herbs have received wide public attention in the world. Bupleurum,native to China,Japan and central Europe,is one of the herbs which are most in *** plant regulator methyl jasmonate(MeJA)mediates diverse developmental processes and defense *** gain information on the regulatory network of MeJA-induced genes in a medicinal herb,MeJA was applied to adventitious root cultures of Bupleurum *** a cDNA microarray,we profiled the transcriptome of MeJA induction at thirteen points in ***-six ESTs,markedly induced by MeJA,were verified by relative quantification real-time *** induced genes include those involved in jasmonate biosynthesis,secondary metabolism,defense signaling,plant hormone regulation and stress protection,indicating that the JA signaling pathway interacts with other signaling pathways leading to transcriptional reprogramming and senescence in B. kaoi adventitious *** levels of the BkβAS and BkDF gene was enhanced by MeJA and affected by developmental stage but not by salicylic *** BkβAS encodes a beta-amyrin synthase which is a rate-limiting enzyme of *** of the gene into yeast revealed that its product functioned in *** T1 transgenic Arabidopsis plants overexpress BkβAS mRNA at a significant level and produced an extra peak in the crude sterol *** BkDF1 and BkDF2 encode proteins belonging to groupⅡof plant *** expression of BkDF1 and the antifungal activity indicated that BkDF1 may serve a role in protection of these organs against a range of pathogens.

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Science China life Sciences 2025年

作者： Xiangping Yao Xudong Mai Ye Tian Yifan liu Guanghui Jin Ze li Shujie chen Xiaoshuang Dai liujing Huang Zijing Fan Guihua Pan Xiaohan Pan Xiangmin li Michael C Yu Jia Sun Jingxing Ou Hong chen liwei Xie College of life and Health Sciences Guangdong Industry Polytechnic Department of Endocrinology and Metabolism Zhujiang Hospital Southern Medical University State Key Laboratory of Applied Microbiology Southern China Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application Guangdong Open Laboratory of Applied MicrobiologyInstitute of Microbiology Guangdong Academy of Sciences Institute of Aging Research Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics School of Medical Technology Guangdong Medical University Department of Hepatic Surgery and liver transplantation Center of the Third Affiliated Hospital Organ Transplantation Institute Sun Yat-sen University Organ Transplantation Research Center of Guangdong ProvinceGuangdong province engineering laboratory for transplantation medicine Guangdong Provincial Key Laboratory of Liver Disease Research School of Public Health Xinxiang Medical University BGI Institute of Applied Agriculture BGI-Shenzhen Department of Applied Biology and Chemical Technology The Hong Kong Polytechnic University Department of Biological Sciences State University of New York at Buffalo Department of Internal Medicine Shunde Women and Children's Hospital (Maternity and Child Healthcare Hospital of Shunde Foshan) Guangdong Medical University

Skeletal muscle plays a significant role in both local and systemic energy metabolism. The current investigation aims to explore the role of the Bambi gene in skeletal muscle, focusing on its implications for muscle hypertrophy and systemic metabolism. We hypothesize that skeletal muscle-specific deletion of Bambi induces muscle hypertrophy, improves metabolic performance, and activates thermogenic adipocytes via the reprogramming of progenitor of i WAT, offering potential therapeutic strategies for metabolic syndromes. Leveraging the Chromatin immunoprecipitation(ChIP)-seq and bioinformatics analysis, Bambi gene is shown to be a direct target of HIF2α, which is further confirmed by ChIP-qPCR and promoter luciferase assay. Skeletal muscle-specific Bambi deletion led to significant muscle hypertrophy and improved metabolic parameters, even under high-fat diet conditions. This deletion induced metabolic reprogramming of stromal vascular fractions(SVFs) into thermogenic adipocytes, contributing to systemic metabolic improvements, potentially through the secretory ***, mice with skeletal muscle-specific Bambi deletion demonstrate resistance to high-fat diet-induced metabolic disorders, highlighting a potential therapeutic pathway for metabolic syndrome management. Thus, skeletal muscle-specific deletion of Bambi triggers muscle growth, enhances metabolic performance, and activates thermogenic adipocytes. These findings suggest Bambi as a novel therapeutic target for metabolic syndromes, providing new insights into the interaction between muscle hypertrophy and systemic metabolic improvement. The study underscores the potential of manipulating muscle physiology to regulate whole-body metabolism, offering a novel perspective on treating metabolic disorders.

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新质生产力的运行机理、生成逻辑与模式建构——基于生产力与生产关系辩证统一的视角

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新疆师范大学学报（哲学社会科学版） 2025年第1期46卷 89-97页

作者：李勇坚张海汝中国社会科学院财经战略研究院北京100005 浙江财经大学浙江杭州310018 江苏省社会科学院经济研究所江苏南京210004

新质生产力是创新发挥主导作用,摆脱传统经济增长方式、生产力发展路径,具有高科技、高效能、高质量特征,符合新发展理念的先进生产力质态。纵观三次科技革命变革生产力的历程,新质生产力的产生和发展是生产力与生产关系相互作用的结果... 详细信息

新质生产力是创新发挥主导作用,摆脱传统经济增长方式、生产力发展路径,具有高科技、高效能、高质量特征,符合新发展理念的先进生产力质态。纵观三次科技革命变革生产力的历程,新质生产力的产生和发展是生产力与生产关系相互作用的结果,具有生产力与生产关系的双重内涵和发展要求。新质生产力以新型劳动者、新型劳动资料、新型劳动对象及其组合模式和新型生产关系为架构要素与发展基础,其生成逻辑与运行机理是由技术革命性突破引发,在催生新型生产力要素、新型要素组合模式的基础上促使与新质生产力相适应的新型生产关系变革形成,新型生产关系的反作用促进新质生产力进一步生成的过程。发展新质生产力要以实施创新驱动战略、加快产业深度转型、构建要素生态系统和全面深化改革为基本模式和关键路径。亟须加快实现高水平科技自立自强,加快技术革命性创新;促进产业深度转型,构建现代化产业体系;促进生产要素创新配置,构建新质生产要素系统;全面深化改革,加快建立健全与新质生产力相适应的新型生产关系,促进新质生产力加快形成发展。

关键词：新质生产力新型生产关系技术革命性突破全面深化改革

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低温相偏硼酸钡（β-BaB2O4）晶体倍频系数的计算

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物理学报 1985年第6期 823-827页

作者：李如康陈创天中国科学技术大学应用化学系中国科学院福建物质结构研究所硕士研究生

本文从“离子基团理论”出发,并考虑A位离子晶格电场对（B3O6）3-环的影响,采用CNDO/S近似计算了（B3O6）3-基团的分子轨道,进而求得低温相偏硼酸钡（β-BaB2O4）晶体的倍频系数。计算结果与实验值符合,由此进一步证实了这一论点:β-BaB... 详细信息

本文从“离子基团理论”出发,并考虑A位离子晶格电场对（B3O6）3-环的影响,采用CNDO/S近似计算了（B3O6）3-基团的分子轨道,进而求得低温相偏硼酸钡（β-BaB2O4）晶体的倍频系数。计算结果与实验值符合,由此进一步证实了这一论点:β-BaB2O4晶体的倍频系数主要来自（B3O6）3-基团中共轭π轨道的贡献。计算结果还表明,CNDO/S型近似是一种计算晶体中共价键基团分子轨道的有效方法。

关键词：晶体倍频系数 BaB2O4 CNDO 分子轨道基团偏硼酸钡硼酸钡钡化合物晶格场低温

Self-assembled carbon monoxide nanoprodrug for chemiexcitationtriggered synergistic chemotherapy against breast cancer

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Science China Chemistry 2025年

作者： Shunfei Cui Yiyao Pan chenzhe Ma Bin Qi Qingqiang Min Ming li Huabing chen Hengte Ke Xingyue Ji Jiangsu Province Engineering Research Center of Precision Diagnostics and Therapeutics Development College of Pharmaceutical ScienceSoochow University

Carbon monoxide（CO） has recently been well-established as a promising therapeutic modality against cancer. The development of transition-metal-free and tumor-targeted delivery platforms for CO is highly demanded but remains very sporadic. Herein, we developed a polyprodrug system for the co-delivery of CO and a chemotherapeutic agent combretastin A-4（CA-4） to the tumor site based on a chemiexcitation mechanism. Such a poly-prodrug successfully achieved the co-activation of CO and CA-4 in response to H2O2at the tumor site both in vitro and in vivo. Importantly, a synergist effect between CO and CA-4 was observed in suppressing tumor growth in a mouse tumor model. It is anticipated that such a poly-prodrug system could be potentially adapted for the co-delivery of CO and another drug payload for combinational therapy for other indications.

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Rational design of lipid-activatable NIR-II probes for precisely imaging atherosclerotic plaque

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Science China Chemistry 2025年

作者： Xinyu Xu Yuan Ma Hui Cao li Xu Haoming chen Sulai liu Wei Sun Guosheng Song Xiaobing Zhang State Key Laboratory for Chemo/Bio-Sensing and Chemometrics College of Chemistry and Chemical EngineeringHunan University Department of Hepatobiliary Surgery/Central Laboratory Hunan Provincial People's Hospital (The First Affiliated Hospital of Hunan Normal University) Department of Cardiology the First Affiliated Hospital of Nanjing Medical University Key Laboratory of Targeted Intervention of Cardiovascular Disease Collaborative Innovation Center for Cardiovascular Disease Translational MedicineNanjing Medical University Shenzhen Research Institute of Hunan University

Atherosclerosis(AS) is a prevalent condition associated with cardiovascular and cerebrovascular diseases, featuring lipid-laden plaque; however, the insufficient resolution and low sensitivity of traditional medical imaging techniques limit their application in lipid imaging. Currently, the second near-infrared(NIR-II) fluorescence imaging offers promising sensitivity and convenience. However, existing probes have limitations in terms of signal-to-background ratio, penetration depth, and tissue scattering. Herein, we use a molecular regulatory strategy to design a lipid-activatable probe Rh-965 with high specificity and NIR-II emission for improved imaging potential in deep tissues. The potential of Rh-965 for imaging plaque lipids in mice with AS is demonstrated by localizing carotid artery plaques using NIR-II imaging. The development of more stable lipid-activated NIR-II probes can significantly enhance atherosclerosis diagnosis and facilitate in vivo imaging in deeper tissues.

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低碘大鼠脾脏淋巴细胞超微结构研究

天津医科大学学报 2001年第3期7卷 326-330页

作者：李金茹陈雪娴天津医科大学组胚教研室 300070

目的 :研究低碘大鼠脾脏淋巴细胞的超微结构。方法 :利用电子显微镜观察低碘大鼠脾脏淋巴细胞的超微结构并进行体视学测量。结果 :低碘大鼠脾脏边缘区内有微绒毛的小淋巴细胞 (B淋巴细胞 )数量增多 ,功能活跃 ;无微绒毛的小淋巴细胞 (T... 详细信息

目的 :研究低碘大鼠脾脏淋巴细胞的超微结构。方法 :利用电子显微镜观察低碘大鼠脾脏淋巴细胞的超微结构并进行体视学测量。结果 :低碘大鼠脾脏边缘区内有微绒毛的小淋巴细胞 (B淋巴细胞 )数量增多 ,功能活跃 ;无微绒毛的小淋巴细胞 (T淋巴细胞 )数量减少 ,功能不活跃。结论 :碘缺乏可导致大鼠体液免疫功能亢进。

关键词：低碘淋巴细胞超微结构

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