检索结果-南通市图书馆

Flexible molecules dedicate to release strain of inverted inorganic perovskite solar cell

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2025年第1期100卷 87-93页

作者： Hongrui Sun Sanlong Wang Pengyang Wang Yali Liu Shanshan qi Biao shi Ying Zhao Xiaodan Zhang Institute of Photoelectronic Thin Film Devices and Technology Renewable Energy Conversion and Storage Center State Key Laboratory of Photovoltaic Materials and CellsNankai University Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin Haihe Laboratory of Sustainable Chemical Transformations Engineering Research Center of Thin Film Photoelectronic Technology of ministry of Education Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)

The tensile strain in inorganic perovskite films induced by thermal annealing is one of the primary factors contributing to the inefficiency and instability of inorganic perovskite solar cells （IPSCs）,which reduces the defect formation ***,a flexible molecule 5-maleimidovaleric acid （5-MVA） was introduced as a strain buffer to release the residual strain of *** anhydride and carboxyl groups in 5-MVA interact strongly with the uncoordinated Pb2+through Lewis acid-base reaction,thus tightly“pull”the perovskite *** in-between soft carbon chain increased the structural flexibility of CsPbI2.85Br0.15perovskite materials,which effectively relieved the intrinsic internal strain of CsPbI2.85Br0.15,resisted the corrosion of external strain,and also reduced the formation of defects such as VIand *** addition,the introduction of 5-MVA improved crystal quality,passivated residual defects,and narrowed energy level ***,power conversion efficiency （PCE） of NiOxbased inverted IPSCs increased from 19.25% to 20.82% with the open-circuit voltage enhanced from 1.164 V to 1.230 *** release of strain also improved the stability of CsPbI2.85Br0.15perovskite films and devices.

关键词： Perovskite solar cells

A matrix metalloproteinase-responsive hydrogel system controls angiogenic peptide release for repair of cerebral ischemia/reperfusion injury

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第2期20卷 503-517页

作者： qi Liu Jianye Xie Runxue Zhou Jin Deng Weihong Nie Shuwei Sun Haiping Wang Chunying shi Department of Human Anatomy Histology and EmbryologySchool of Basic MedicineQingdao UniversityQingdaoShandong ProvinceChina Department of Neurology The Affiliated Hospital of Qingdao UniversityQingdaoShandong ProvinceChina Department of General Practice The Affiliated Hospital of Qingdao UniversityQingdaoShandong ProvinceChina

Vascular endothelial growth factor and its mimic peptide KLTWQELYQLKYKGI(QK)are widely used as the most potent angiogenic factors for the treatment of multiple ischemic ***,conventional topical drug delivery often results in a burst release of the drug,leading to transient retention(inefficacy)and undesirable diffusion(toxicity)in ***,a drug delivery system that responds to changes in the microenvironment of tissue regeneration and controls vascular endothelial growth factor release is crucial to improve the treatment of ischemic *** metalloproteinase-2(MMP-2)is gradually upregulated after cerebral ***,vascular endothelial growth factor mimic peptide QK was self-assembled with MMP-2-cleaved peptide PLGLAG(TIMP)and customizable peptide amphiphilic(PA)molecules to construct nanofiber hydrogel ***-TIMP-QK was found to control the delivery of QK by MMP-2 upregulation after cerebral ischemia/reperfusion and had a similar biological activity with vascular endothelial growth factor in *** results indicated that PA-TIMP-QK promoted neuronal survival,restored local blood circulation,reduced blood-brain barrier permeability,and restored motor *** findings suggest that the self-assembling nanofiber hydrogel PA-TIMP-QK may provide an intelligent drug delivery system that responds to the microenvironment and promotes regeneration and repair after cerebral ischemia/reperfusion injury.

关键词： angiogenesis biomaterial blood-brain barrier cerebral ischemia/reperfusion injury control release drug delivery inflammation QK peptides matrix metalloproteinase-2 neuroprotection self-assembling nanofiber hydrogel

Single-cell technologies: current and near future

在线全文

学校读者我要写书评

暂无评论

Science China Life Sciences 2025年第01期 1-4页

作者： Chenfei Wang qi Liu Xiaohui Fan Tieliu shi Key Laboratory of Spine and Spinal Cord Injury Repair and Regeneration Ministry of EducationOrthopedics DepartmentTongji HospitalBioinformatics DepartmentSchool of Life Sciences and TechnologyTongji University Frontier Science Center for Stem Cells School of Life Sciences and TechnologyTongji University Translational Medical Center for Stem Cell Therapy and Institute for Regenerative Medicine Shanghai East HospitalBioinformatics DepartmentSchool of Life Sciences and TechnologyTongji University Research Institute of Intelligent Computing Zhejiang Lab Pharmaceutical Informatics Institute College of Pharmaceutical SciencesZhejiang University National Key Laboratory of Chinese Medicine Modernization Innovation Center of Yangtze River DeltaZhejiang University Center for Bioinformatics and Computational Biology Shanghai Key Laboratory of Regulatory Biologythe Institute of Biomedical Sciences and School of Life SciencesEast China Normal University Key Laboratory of Advanced Theory and Application in Statistics and Data Science (MOE) School of StatisticsEast China Normal University

Single-cell technologies enable the indepth exploration of multiple biological hierarchies at the scale of individual cells,which have deepened our knowledge of cellular diversity, tissue organization, and overall organism function(Sun et al.,2024). In 2009, single-cell RNA sequencing(sc RNA-seq) was first developed as a powerful tool to dissect gene expression and uncover transcriptional *** the rapid advancement of technology, single-cell approaches have expanded to encompass other omics, such as genomics, epigenomics, proteomics,and metabolomics.

关键词：

同方期刊数据库

在线全文

学校读者我要写书评

暂无评论

中国国土空间规划人才培养体系建设

自然资源学报 2022年第11期37卷 2961-2974页

作者：陈逸周悦黄贤金史敏琦马其芳南京大学地理与海洋科学学院南京210023 南京信息工程大学地理科学学院南京210044

国土空间规划体系改革对人才培养提出了新的要求,构建新时代国土空间规划人才培养体系迫在眉睫。从人才培养和人才需求两个层面开展问卷调查,运用潜在冲突指数(PCI)等方法,研究中国国土空间规划相关专业的教育现状。结果表明:目前全国... 详细信息

国土空间规划体系改革对人才培养提出了新的要求,构建新时代国土空间规划人才培养体系迫在眉睫。从人才培养和人才需求两个层面开展问卷调查,运用潜在冲突指数(PCI)等方法,研究中国国土空间规划相关专业的教育现状。结果表明:目前全国开设国土空间规划相关专业的高校约有261所,并呈现出开设类型多样化、办学层级多元化、学位学制差异化,以及硕博培养体系亟需完善等特征。从人才供给侧来看,学科基础的差异性导致了现有人才培养方案对规划基础理论掌握的要求各有侧重,但是各专业均表示出对规划工具应用、规划实践课程以及跨学科知识融合的强烈需求。而从人才需求侧来看,用人单位都重视多学科交叉复合型人才、理论与实践兼备的技术型人才以及基础理论扎实的专业型人才。为此,特从学科体系构建、基础理论研究、应用课程建设、专业评估机制和职业培训渠道等方面提出了国土空间规划人才培养体系革新思路。

关键词：国土空间规划人才培养人才供给侧人才需求侧问卷调查

PLS通径模型的通信对抗装备系统效能评估分析

在线全文

学校读者我要写书评

暂无评论

火力与指挥控制 2018年第4期43卷 71-74页

作者：罗乐葛启东杨昱祁世民中国洛阳电子装备试验中心河南洛阳471003

针对评估指标间的多重相关性和样本数据少的特点,研究了基于PLS通径模型的通信对抗装备系统效能评估分析方法,介绍了PLS通径模型的基本原理和主要算法,并进行了实例仿真和分析,结果表明该方法是有效可行的,能够对制约电子信息装备系统... 详细信息

针对评估指标间的多重相关性和样本数据少的特点,研究了基于PLS通径模型的通信对抗装备系统效能评估分析方法,介绍了PLS通径模型的基本原理和主要算法,并进行了实例仿真和分析,结果表明该方法是有效可行的,能够对制约电子信息装备系统效能发挥因素进行科学定量分析。

关键词：通信对抗装备效能评估评估指标偏最小二乘通径模型

Upcycling of polyethylene terephthalate to1,4-cyclohexanedimethanol in water

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2025年

作者： Shuhui Fang Zhiwen Gao Xinrui shi min Zhang Wei Zhang Yue Liu State Key Laboratory of Petroleum Molecular & Process Engineering Shanghai Key Laboratory of Green Chemistry and Chemical ProcessesSchool of Chemistry and Molecular Engineering East China Normal University Engineering Center for Sustainable Carbon Science and Technology East China Normal University Institute of Eco-Chongming

The recycling of waste polyethylene terephthalate（PET）, an extensively used polymer as plastic and fiber materials, has become an urgent topic due to the rapid generation and accumulation of plastic waste into the environment. Current chemical recycling approaches to depolymerize and convert PET into 1,4-cyclohexanedimethanol（CHDM）, an important chemical in the production of advanced polyesters, predominantly use organic solvents, such as alcohols or dioxane. Herein, we developed an environmentally friendly and economically viable pathway for converting PET to CHDM using water as the solvent. In this process, PET is sequentially hydrolyzed in water, hydrogenated to 1,4-cyclohexane dicarboxylic acid（CHDA）, and then reduced to CHDM. The PET conversion rate is self-enhanced in aqueous medium via acid-catalyzed hydrolysis by the generated CHDA intermediate. A Pd-based catalyst（e.g., Pd/C） selectively hydrogenates the arene ring of the PET monomer, terephthalic acid intermediate, and a Ru-Sn/C bimetallic catalyst reduces its COOH to CH2OH group. At optimized reaction conditions, a complete conversion of PET and 80.1% yield of CHDM are obtained. Alternatively, this approach can also efficiently produce CHDA from PET, with a yield up to 86.4%.

关键词：

灰色层次分析GAHP的通指系统作战效能评估

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

火力与指挥控制 2014年第2期39卷 86-89页

作者：罗乐李钟敏夏斌祁世民解放军63893部队

针对复杂电磁环境训练下,通信指挥信息系统作战效能评估指标体系不完善,评估方法不合理的难点,采用Delphi咨询法构建通指系统作战效能评估指标体系,运用灰色层次分析法得到通指系统作战效能综合评估值。通过Matlab仿真计算进行实例分析... 详细信息

针对复杂电磁环境训练下,通信指挥信息系统作战效能评估指标体系不完善,评估方法不合理的难点,采用Delphi咨询法构建通指系统作战效能评估指标体系,运用灰色层次分析法得到通指系统作战效能综合评估值。通过Matlab仿真计算进行实例分析,评估结果客观反映出通信部队通指系统作战效能的水平,证实了通指系统作战效能指标体系构建的合理性和评估方法运用的可行性,为通信部队训练评估提供了借鉴。该方法在实践中得到运用。

关键词：通信指挥信息系统作战效能指标体系灰色层次分析法

在线全文

学校读者我要写书评

暂无评论

基于自抗扰控制的PMSM直接转矩控制研究

微特电机 2017年第2期45卷 42-45页

作者：祁世民周臻窦晓华王永中国科学技术大学解放军63893部队酒泉卫星发射中心

针对传统的永磁同步电机(PMSM)空间矢量调制-直接转矩控制(SVM-DTC)存在转矩脉动大以及PID参数整定繁琐等缺点,介绍了一种基于自抗扰控制(ADRC)的PMSM直接转矩控制方法。通过设计ADRC控制器,对电机运行过程中的扰动进行观测和补偿,提高... 详细信息

针对传统的永磁同步电机(PMSM)空间矢量调制-直接转矩控制(SVM-DTC)存在转矩脉动大以及PID参数整定繁琐等缺点,介绍了一种基于自抗扰控制(ADRC)的PMSM直接转矩控制方法。通过设计ADRC控制器,对电机运行过程中的扰动进行观测和补偿,提高了电机转速的控制精度,降低了转矩脉动。仿真和实验结果验证了方法的可行性和有效性。

关键词：永磁同步电机直接转矩控制自抗扰控制空间矢量调制

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

在线全文

学校读者我要写书评

暂无评论

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.

关键词：