检索结果-南通市图书馆

Building Li-S batteries with enhanced temperature adaptability via a redox-active COF-based barrier-trapping electrocatalyst

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2025年第2期101卷 702-712页

作者： Jie Xu Acheng Zhu Zhangyu Zheng Yiming Qi Yuwen Cheng Yongjie Cao Bo Peng Lianbo Ma Yonggang Wang School of Materials Science and Engineering Key Laboratory of Efficient Conversion and Solid-state Storage of Hydrogen & Electricity of Anhui Province Key Laboratory of Green Fabrication and Surface Technology of Advanced Metal Materials of Ministry of Education Anhui University of Technology Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Institute of New Energy iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) Fudan University

Covalent organic frameworks（COFs） are promising materials for mitigating polysulfide shuttling in lithium-sulfur（Li-S） batteries,but enhancing their ability to convert polysulfides across a wide temperature range remains a challenge,Herein,we introduce a redox-active COF（RaCOF） that functions as both a physical barrier and a kinetic enhancer to improve the temperature adaptability of Li-S batteries,The RaCOF constructed from redox-active anthraquinone units accelerates polysulfide conversion kinetics through reversible C=O/C-OLi transformations within a voltage range of 1,7 to 2.8 V（***+/Li）,optimizing sulfur redox reactions in ether-based *** conventional COFs,RaCOF provides bidentate trapping of polysulfides,increasing binding energy and facilitating more effective polysulfide ***-situ XRD and ToF-SIMS analyses confirm that RaCOF enhances polysulfide adsorption and promotes the transformation of lithium sulfide（Li2S）,leading to better sulfur cathode ***,RaCOF-modified Li-S batteries demonstrate low self-discharge（4.0% decay over a 7-day rest）,excellent wide-temperature performance（stable from-10 to+60℃）,and high-rate cycling stability（94% capacity retention over 500 cycles at 5.0 C）.This work offers valuable insights for designing COF structures aimed at achieving temperature-adaptive performance in rechargeable batteries.

关键词： Covalent organic framework Lithium-sulfur batteries Redox-active property Wide-temperature adaptability

The present state of complementary medicine regulation in Saudi Arabia

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Integrative Medicine 2019年第3期17卷 147-149页

作者： Tamer Aboushanab Mohamed Khalil Yaser Al Ahmari National Center for Complementary and Alternative Medicine Ministry of Health

The prevalence of use of traditional and complementary medicine in the Saudi Arabia population has reached 75%. The most used therapies are religious healing, herbal medicine and cupping therapy. The National Center for Complementary and Alternative Medicine is the Saudi national reference for all activities regarding complementary medicine. This article briefly highlights the current state of complementary medicine regulation in Saudi Arabia.

关键词： Complementary medicine Integrative medicine Cupping Acupuncture Saudi Arabia

Ultrathin inorganic-organic solid-state electrolyte reinforced by a prefiberized LAGP continuous skeleton

在线全文

学校读者我要写书评

暂无评论

Science China Materials 2025年第1期68卷 199-206页

作者： Shiya Li Shuhao Wang Gaofeng Du Jianing Liang Zhaoming Tong Yanming Cui Jiu Lin Xiaoxiong Xu Xizheng Liu Tianyou Zhai Huiqiao Li state Key Laboratory of Materials Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China Key Laboratory of Optoelectronic Chemical Materials and Devices(ministry of Education) School of Optoelectronic Materials&TechnologyJianghan UniversityWuhan 430056China Zhejiang Funlithium New Energy Technology Co. Ltd.Ningbo 315201China

Inorganic-organic composite electrolyte is proved an effective way to enhance the overall performance of the ***,simply combining powder fillers with polymers is not sufficient for the application of composite *** this work,we designed an ultrathin organic-inorganic composite solid electrolyte with high mechanical strength and ionic conductivity,in which the inorganic Li1.5Al0.5Ge1.5(PO_(4))3(LAGP)solid electrolyte is prefiberized into a three-dimensional nanofiber network to serve as a self-supporting skeleton for the polyethylene oxide(PEO)*** continuous skeleton structure not only significantly improves the mechanical strength of the PEO-based electrolyte,but also forms a continuous lithium-ion conduction path,promoting the rapid migration of lithium *** fiber-reinforced composite electrolyte has an ionic conductivity of 8.27×10^(−4) S cm^(-1) at 60°C and a tensile strength of up to 4.29 ***,it exhibits a reduced overpotential and stable long-term cycling performance over 1700 h when used in Li/Li symmetric *** LiFePO_(4)(LFP)|Li cell assembled with the fiber-reinforced composite electrolyte also delivers a specific capacity of about 142 mAh g^(−1) over 300 cycles at 0.5 C and maintains good cycling *** work provides a novel idea for designing the next generation of safe and reliable organic-inorganic composite solid-state electrolyte membranes.

关键词： solid-state lithium metal batteries solid-state electrolytes polymer electrolytes LAGP structure design ultra-thin electrolyte membrane

Precision-Engineered Construction of Proton-Conducting Metal-Organic Frameworks

在线全文

学校读者我要写书评

暂无评论

Nano-Micro Letters 2025年第4期17卷 230-274页

作者： Liyu Zhu Hongbin Yang Ting Xu Feng Shen Chuanling Si state Key Laboratory of Biobased Fiber Manufacturing Technology Tianjin Key Laboratory of Pulp and PaperTianjin University of Science and Technology300457 TianjinPeople’s Republic of China state Key Laboratory of Pulp and Paper Engineering South China University of Technology510640 GuangzhouPeople’s Republic of China Agro-Environmenta Protection Institute Ministry of Agriculture and Rural Affairs300191 TianjinPeople’s Republic of China Robustnique Co.Ltd. Block CPhase IIPioneer ParkLanyuan Road300384 TianjinPeople’s Republic of China

Proton-conducting materials have attracted considerable interest because of their extensive application in energy storage and conversion *** them,metal-organic frameworks(MOFs)present tremendous development potential and possibilities for constructing novel advanced proton conductors due to their special advantages in crystallinity,designability,and *** particular,several special design strategies for the structure of MOFs have opened new doors for the advancement of MOF proton conductors,such as charged network construction,ligand functionalization,metal-center manipulation,defective engineering,guest molecule incorporation,and pore-space *** the implementation of these strategies,proton-conducting MOFs have developed significantly and profoundly within the last ***,in this review,we critically discuss and analyze the fundamental principles,design strategies,and implementation methods targeted at improving the proton conductivity of MOFs through representative ***,the structural features,the proton conduction mechanism and the behavior of MOFs are discussed thoroughly and *** endeavors are also proposed to address the challenges of proton-conducting MOFs in practical *** sincerely expect that this review will bring guidance and inspiration for the design of proton-conducting MOFs and further motivate the research enthusiasm for novel proton-conducting materials.

关键词： MOFs Proton conduction Porous materials Fuel cells

Impact of Drought on Farmers' Livelihood Vulnerability:A Case Study of County-level Units in Western Jilin Province, China

在线全文

学校读者我要写书评

暂无评论

Chinese Geographical Science 2025年第2期 279-294页

作者： ZHANG Jiani HAN Yang FANG Yangang XU Yaping CHEN Chunlin LIU Zhuxin WANG Feiyu ZHUANG Lijuan HUANG Fang Key Laboratory of Geographical Processes and Ecological Security in Changbai Mountains Ministry of Education School of Geographical Sciences Northeast Normal University Department of Environmental and Geosciences Sam Houston State University School of Economics and Management Northeast Normal University

Agricultural drought, a prolonged disaster with widespread impacts, exerts tremendous pressure on farm household activities,agricultural production, and economic development. The western region of Jilin Province, China, located in a semi-arid zone, where persistents drought exacerbates ecological fragility. With a larger proportion of its population living in rural areas, the life and production activities of households are particularly susceptible to drought-related challenges. This study focuses on the western part of Jilin Province, utilizing remote sensing data to calculate the temperature vegetation dryness index(TVDI) as a soil moisture monitoring indicator for drought assessment. The livelihood vulnerability index(LVI) and the improved LVI-Intergovernmental Panel on Climate Change(IPCC) index are employed to comprehensively assess the livelihood vulnerability of communes in the region and the impact of drought conditions on farmers' livelihood vulnerability. The results reveal a spatial trend of increasing drought severity from northeast to southwest, with temporally minor fluctuations observed in drought levels from 2005 to 2022. Livelihood vulnerability results indicate significant spatial and temporal variations, with education, health, food, and water playing key roles. Correlation analysis indicates a strong relationship between TVDI and LVI, highlighting the detrimental impact of drought on farmers' livelihoods. The study aims to provide a scientific foundation for managing livelihood vulnerability in the western part of Jilin Province and similar arid areas. Additionally, it seeks to offer strategic recommendations for policymakers to mitigate the adverse effects of drought, thereby reducing farmers' vulnerability and fostering sustainable socio-economic development.

关键词：

同方期刊数据库

A Simulation Study to Assess Impacts of Habitat-Dependent Parameters of Surplus Production Model on Stock Assessment of Chilean Jack Mackerel in the Southeast Pacific Ocean

在线全文

学校读者我要写书评

暂无评论

Journal of Ocean University of China 2025年第1期24卷 169-181页

作者： LI Gang CAO Yangming CAO Jie CHEN Xinjun ZOU Xiaorong College of Marine Science Shanghai Ocean UniversityShanghai 201306China National Engineering Research Center for Oceanic Fisheries Shanghai 201306China The Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources Ministry of EducationShanghai 201306China Department of Applied Ecology Center for Marine Sciences and TechnologyNorth Carolina State UniversityMorehead CityNC 28557USA

Pelagic fish are the most abundant species in upwelling regions,contributing 25%of total global fisheries ***-driven changes in the marine environment play a crucial role in their population *** Chilean jack mackerel(Trachurus murphyi)as an example,this study conducted simulations to quantify the impacts of environmental variations on the stock assessment.A habitat-based surplus production model was developed by integrating suitable habitat area into the model parameters carrying capacity(K)and intrinsic growth rate(r),with a suitable habitat area serving as the proxy for the environmental conditions for Chilean jack mackerel in the Southeast Pacific *** dynamics of Chilean jack mackerel stock and fisheries data were simulated,and four assessment models with different configurations were built to fit simulated data,with or without considering environmental *** results indicated that Joint K-r model,which integrated both parameters with the suitable habitat area index,outperformed the others by coming closest to the‘true'population *** habitat variations in the estimation model tended to overestimate biomass and underestimate harvest rate and reference *** observation and process error,the results were estimated with bias,while FMSY is relatively *** research illustrates the importance to consider random errors and environmental influences on populations,and provides foundation guidelines for future stock assessment.

关键词： Trachurus murphyi simulations suitable habitat area stock assessment errors Southeast Pacific Ocean

Multi-omics analysis and experimental verification reveal testicular fatty acid metabolism disorder in non-obstructive azoospermia

在线全文

学校读者我要写书评

暂无评论

Zoological Research 2025年第01期 177-192页

作者： Zhou Li Yi-Jian Xiang Zhi-Chuan Zou Yu-Ming Feng Hui Wang Wei-Qing Chen Xie Ge Jin-Zhao Ma Jun Jing Bing Yao Department of Reproductive Medicine Jinling Hospital Affiliated Hospital of Medical School Nanjing University state Key Laboratory of Reproductive Medicine and Offspring health Nanjing Medicine University

Increasing evidence implicates disruptions in testicular fatty acid metabolism as a contributing factor in nonobstructive azoospermia(NOA), a severe form of male infertility. However, the precise mechanisms linking fatty acid metabolism to NOA pathogenesis have not yet been fully elucidated. Multi-omics analyses, including microarray analysis, single-cell RNA sequencing(scRNA-seq), and metabolomics, were utilized to investigate disruptions in fatty acid metabolism associated with NOA using data from public databases. Results identified ACSL6, ACSBG2, and OLAH as key genes linked to fatty acid metabolism dysregulation, suggesting their potential causative roles in NOA. A marked reduction in omega-3 polyunsaturated fatty acids, especially docosahexaenoic acid(DHA), was observed, potentially contributing to the pathological process of NOA. Sertoli cells in NOA patients exhibited apparent fatty acid metabolic dysfunction, with PPARG identified as a key transcription factor(TF) regulating this process. Functional analyses demonstrated that PPARG is crucial for maintaining blood-testis barrier(BTB) integrity and promoting spermatogenesis via regulation of fatty acid metabolism. These findings reveal the pivotal role of fatty acid metabolism in NOA and identify PPARG as a potential therapeutic target.

关键词：

The interplay between histone modifications and nuclear lamina in genome regulation

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Genetics and Genomics 2025年第1期52卷 24-38页

作者： Chang Sun Yanjing Zhao Liping Guo Juhui Qiu Qin Peng Institute of Systems and Physical Biology Shenzhen Bay LaboratoryShenzhen 518132China Faculty of Medicine and health Sciences Barcelona UniversityBarcelonaSpain Division of Life Science Hong Kong University of Science and TechnologyClear Water BayKowloonHong KongChina School of Biology and Biological Engineering South China University of TechnologyGuangzhouGuangdong 510006China Key Laboratory for Biorheological Science and Technology of ministry of Education State and Local Joint Engineering Laboratory for Vascular ImplantsCollege of BioengineeringChongqing UniversityChongqing 400030China

Gene expression is regulated by chromatin architecture and epigenetic remodeling in cell homeostasis and *** modifications act as the key factors to modulate the chromatin *** histone modifications are strongly associated with the localization of *** primarily localizes at the nuclear periphery,where it interacts with lamina proteins to suppress gene *** this review,we summarize the potential bridges that have regulatory functions of histone modifications in chromatin organization and transcriptional regulation at the nuclear *** use lamina-associated domains(LADs)as examples to elucidate the biological roles of the interactions between histone modifications and nuclear lamina in cell differentiation and *** the end,we highlight the technologies that are currently used to identify and visualize histone modifications and LADs,which could provide spatiotemporal information for understanding their regulatory functions in gene expression and discovering new targets for diseases.

关键词： Histone modifications Chromatin organization Nuclear lamina Lamina-associated domain Genome regulation Cell differentiation

Global patterns of taxonomic and phylogenetic endemism in liverwort assemblages

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Plant Diversity 2025年第1期47卷 82-88页

作者： Hong Qian Shenhua Qian Research and Collections Center Illinois State Museum1011 East Ash StreetSpringfieldIL 62703USA Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment Ministry of EducationChongqing UniversityChongqing 400045China College of Environment and Ecology Chongqing UniversityChongqing 400045China

Exploring the worldwide patterns of endemism and the processes that lead to the formation of highendemism centers is crucial in *** study examines the geographic distribution and ecological influences on the endemism of liverworts across 390 regions *** assess phylogenetic endemism and relative phylogenetic endemism in relation to eleven environmental factors,which represent current and Quaternary climate variations,as well as topographic and environmental *** with higher endemism in liverworts tend to have higher temperatures,precipitation,and environmental heterogeneity,but lower temperature seasonality and lesser impacts from Quaternary climate *** exhibiting notably high endemism are predominantly found in tropical Asia,Madagascar,eastern Australia,and the Andes,while those with notably low endemism are generally in temperate Eurasia and North America,parts of Africa,and eastern South *** of neo-endemism are mainly in southern Africa,whereas centers of paleo-endemism are in southern South America,tropical Asia,and New *** variability is a more significant predictor of phylogenetic endemism than current climate conditions,which are themselves more predictive than variables related to Quaternary climate ***,these three types of explanatory variables combined explain only about one-third of the variance in phylogenetic endemism.

关键词： Bryophyte Quaternary climate change Current climate Topographic heterogeneity Endemism