检索结果-南通市图书馆

Mitigating Lattice Distortion of High‑Voltage LiCoO_(2)via Core‑Shell Structure Induced by Cationic Heterogeneous Co‑Doping for Lithium‑Ion Batteries

在线全文

学校读者我要写书评

暂无评论

Nano-Micro Letters 2024年第3期16卷 169-182页

作者： Zezhou Lin Ke Fan Tiancheng Liu Zhihang xu Gao Chen Honglei Zhang Hao Li xuyun Guo Xi Zhang Ye Zhu Peiyu hou Haitao Huang Department of Applied Physics and Research Institute for Smart Energy The Hong Kong Polytechnic UniversityHong KongPeople’s Republic of China Department of Applied Physics The Hong Kong Polytechnic UniversityHong KongPeople’s Republic of China Institute of Nanosurface Science and Engineering Guangdong Provincial Key Laboratory of Micro/Nano Optomechatronics EngineeringShenzhen UniversityShenzhenPeople’s Republic of China School of Physics and Technology University of JinanJinanShandongPeople’s Republic of China

Inactive elemental doping is commonly used to improve the structural stability of high-voltage layered transition-metal oxide ***,the one-step co-doping strategy usually results in small grain size since the low diffusivity ions such as Ti^(4+)will be concentrated on grain boundaries,which hinders the grain *** order to synthesize large single-crystal layered oxide cathodes,considering the different diffusivities of different dopant ions,we propose a simple two-step multi-element co-doping strategy to fabricate core–shell structured LiCoO_(2)(CS-LCO).In the current work,the high-diffusivity Al^(3+)/Mg^(2+)ions occupy the core of single-crystal grain while the low diffusivity Ti^(4+)ions enrich the shell *** Ti^(4+)-enriched shell layer(~12 nm)with Co/Ti substitution and stronger Ti–O bond gives rise to less oxygen ligand ***-situ XRD demonstrates the constrained contraction of c-axis lattice parameter and mitigated structural *** a high upper cut-off voltage of 4.6 V,the single-crystal CS-LCO maintains a reversible capacity of 159.8 mAh g^(−1)with a good retention of~89%after 300 cycles,and reaches a high specific capacity of 163.8 mAh g^(−1)at *** proposed strategy can be extended to other pairs of low-(Zr^(4+),Ta^(5+),and W6+,etc.)and high-diffusivity cations(Zn^(2+),Ni^(2+),and Fe^(3+),etc.)for rational design of advanced layered oxide core–shell structured cathodes for lithium-ion batteries.

关键词： Lithium-ion battery LiCoO_(2) Heterogeneous co-doping Core-shell structure High-voltage stability

Dispersal patterns of Reeves's pheasant based on genetic and behavioral evidence

在线全文

学校读者我要写书评

暂无评论

Current Zoology 2024年第4期70卷 480-487页

作者： Shuai Lu Xian hou Shan Tian Zhengxiao Liu Yunqi Wang Ting Jin Jianqiang Li Pengcheng Wang Jiliang xu School of Ecology and Nature Conservation Beijing Forestry UniversityBeijing 100083China State Key Laboratory of Efficient Production of Forest Resources Bejing Forestry UniversityBeijing 100083China Jiangsu Key Laboratory for Biodiversity and Biotechnology College of Life SciencesNanjing Normal UniversityNanjing 210o23China

Dispersal is an important life history trait that plays a crucial role in avoiding *** the dispersal pattern of a threatened species facilitates conservation *** species of Galliformes are forest-dwelling terrestrial birds with a weak dispersal ability and high conservation ***,little is known about the dispersal behavior and dispersal pattern of Galliformes species such as Reeves's pheasant Syrmaticus reevesi,a globally vulnerable species endemic to ***,we integrated behavioral and genetic analyses to inves-tigate the dispersal pattern of Reeves's *** results revealed that both females and males would disperse,although the overall dispersal pattern was more likely to be ***'s pheasant population had a low level of genetic diversity and a mild level of *** low genetic diversity was resulted from fragmented habitat,and male-biased dispersal may reduce the opportunity of *** research indicated that sex-biased dispersal patterns may be a behavioral mechanism adopted by wildlife to avoid inbreeding inafragmented habitat.

关键词： animal behavior dispersal Gallformes genetic diversity satellite tracking.

Al-driven analysis establishes the single base substitution signatures as personalized prognostic predictors for five-year survival of gastric cancer

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

Genes & Diseases 2024年第4期11卷 73-76页

作者： Zhenzhang Li Lingqing xu Wen Luo Shaoan Zhangg Chunyu hou Xiaohong xu ,xubei Peng E.Shiju Janak L.Pathak Shizhen Zhang Jiawei Liu Linhai Li Yang Li School of Biomedical Engineering The Sixth Affiliated HospitalGuangzhou Medical UniversityGuangzhouGuangdong 511436China College of Mathematics and Systems Science Guangdong Polytechnic Normal UniversityGuangzhouGuangdong 510665China The Second Affiliated Hospital Guangzhou Medical UniversityGuangzhouGuangdong 510260China Center for Learning Sciences and Technologies The Chinese University of Hong KongShatinNew Territories 999077China Affiliated Stomatology Hospital of Guangzhou Medical University Guangzhou Medical UniversityGuangzhouGuangdong 510182China International School of Photonics Cochin University of Science and TechnologyKochiKerala 682022India

Al-driven genetic engineering,as a burgeoning diagnostic tool,can offer predictive information on the five-year survival rate(FYSR)in the setup of a prognostic therapeutic *** approach provides the individuality and accuracy of prognosis for FYSR of gastric cancer(GC).Unlike traditional neoplasm staging criteria,our technique ensures accuracy and individuality without relying on statistical data and empirical study.

关键词： cancer gastric prognosis

Vertebral Artery Stenting for Acute Multiple Cerebral Infarctions Caused by Vertebral Artery Dissection After Massage:A Case Report

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

Chinese Medical Sciences Journal 2024年第2期39卷 149-154页

作者： Ying-xue Cui Chuan-Jin Song xue-Si hou Gui-Lin Liu xu Ji Shao-Song Wang Department of Neurology Beijing Hospital of Traditional Chinese MedicineCapital Medical UniversityBeijing 100010China

Vertebral artery dissection is a rare pathology that can cause ischemic stroke in young *** massage,especially improper pulling manipulation,is a cause of vertebral artery *** present a case of 32-year old woman who developed acute multiple posterior circulation ischemic cerebral infarctions as a result of left vertebral artery V4 segment dissection after receiving neck *** underwent emergency vertebral artery stent implantation at the site of the *** were relieved the day after *** patient recovered without adverse complications or endovascular restenosis in the following year.

关键词： vertebral artery dissection acute ischemic stroke stent implantation endovascular therapy

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

通讯铁塔倒塌原因分析

理化检验（物理分册） 2005年第5期41卷 259-261页

作者：侯旭明包头职业技术学院材料系包头014030

采用断口宏、微观分析、力学性能测试、化学成分分析和金相检验等方法,对通讯铁塔的断裂角钢进行了分析。分析结果表明,角钢的化学成分、显微组织和力学性能正常;铁塔在长期使用中缺乏必要的维护,致使多处的紧固螺栓松动,并在较强风力... 详细信息

采用断口宏、微观分析、力学性能测试、化学成分分析和金相检验等方法,对通讯铁塔的断裂角钢进行了分析。分析结果表明,角钢的化学成分、显微组织和力学性能正常;铁塔在长期使用中缺乏必要的维护,致使多处的紧固螺栓松动,并在较强风力作用下,造成铁塔过度晃动和钢结构塑性弯曲变形导致铁塔倾斜,最终发生铁塔倒塌。

关键词：铁塔倒塌角钢连接螺拴松动

Optimizing nitrogen management in the food system for sustainable development: a case study of Quzhou County

在线全文

学校读者我要写书评

暂无评论

Frontiers of Agricultural Science and Engineering 2024年第1期11卷 113-121页

作者： Fanlei MENG Menru WANG Yong hou Lin MA Wenqi MA xuejun LIU Fusuo ZHANG Wen xu College of Resources and Environmental Sciences National Academy of Agriculture Green DevelopmentState Key Laboratory of Nutrient Use and ManagementNational Observation and Research Station of Agriculture Green Development(QuzhouHebei)China Agricultural UniversityBeijing 100193China Water Systems and Global Change Group Wageningen University&Research6700 AA Wageningenthe Netherlands Environmental Systems Analysis Group Wageningen University&Research6708 PB Wageningenthe Netherlands Key Laboratory of Agricultural Water Resources Hebei Key Laboratory of Soil EcologyCenter for Agricultural Resources ResearchInstitute of Genetic and Developmental BiologyChinese Academy of SciencesShijiazhuang 050021China College of Resources and Environment Science Hebei Agricultural UniversityBaoding 071001China

Nitrogen(N) is an essential nutrient for food production. The rapid increase in population requires high inputs of N to meet the growing food demand. If not managed well, the substantial loss of N from the food system has multiple impacts on grain yield, air and water pollution, and the economic benefits of agricultural. Multi-objective(food security, environmental sustainability and economic sustainability) synergistic consideration of N management in the food system is still lacking. This study employed strategies for optimizing N management in the food system, using Quzhou County as a typical example on the North China Plain. Firstly, a food chain approach was adopted to understand drivers and reasons behind N losses from the food ***, a top-down approach was used to define multi-objective N management, taking into consideration food security, environmental sustainability and economic sustainability. Multi-objective N management aims to reduce N losses to the environment and increase N use efficiencies,while simultaneously increasing yields and economic benefits. Thirdly, 3R(reduce-retain-recycle) N management strategies were identified for specific crops and animals through a bottom-up approach and then analyzed the potential of these strategies to achieve the multi-objectives. Finally, there is a discussion of how to engage different stakeholders to promote the technologies implementation. This study provides new insights into the synergistic achievement of multi-objective N management in the food system and the development of environmentally-friendly agriculture.

关键词： Agriculture green development food system multi-objective nitrogen management

Experimental Proposal on Non-Hermitian Skin Effect by Two-dimensional Quantum Walk with a Single Trapped Ion

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 2024年第4期41卷 19-24页

作者：侯琬儿唐皓许勤林毅恒 CAS Key Laboratory of Microscale Magnetic Resonance and School of Physical Sciences University of Science and Technology of ChinaHefei 230026China Hefei National Laboratory University of Science and Technology of ChinaHefei 230088China

Non-Hermitian Hamiltonians are widely used in describing open systems with gain and loss,among which a key phenomenon is the non-Hermitian skin *** we report an experimental scheme to realize a twodimensional(2D)discrete-time quantum walk with non-Hermitian skin effect in a single trapped *** is shown that the coin and 2D walker states can be labeled in the spin of the ion and the coherent-state lattice of the ion motion,*** numerically observe a directional bulk flow,whose orientations are controlled by dissipative parameters,showing the emergence of the non-Hermitian skin *** then discuss an experimental implementation of our scheme in a laser-controlled trapped Ca^(+)*** experimental proposal may be applicable to research of dissipative quantum walk systems and may be able to generalize to other platforms,such as superconducting circuits and atoms in cavity.

关键词： effect dissipative quantum

Rapid rupture characterization for the 2023 M_(S)6.2 Jishishan earthquake

在线全文

学校读者我要写书评

暂无评论

Earthquake Research Advances 2024年第2期4卷 22-26页

作者： Xiongwei Tang Rumeng Guo Yijun Zhang Kun Dai Jianqiao xu Jiangcun Zhou mingqiang hou Heping Sun State Key Laboratory of Geodesy and Earth's Dynamic Innovation Academy for Precision Measurement Science and TechnologyChinese Academy of SciencesWuhan430077China College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing100101China Hubei Luojia Laboratory Wuhan430079China

On December 18, 2023, the M_(S)6.2 Jishishan earthquake occurred in the northeastern region of the QinghaiXizang Plateau, causing heavy casualties and property damage in Gansu and Qinghai Provinces. In this study,we integrate space imaging geodesy, finite fault inversion, and back-projection methods to decipher its rupture property, including fault geometry, coseismic slip distribution, rupture direction, and propagation speed. The results reveal that the seismogenic fault dips to the southwest at an angle of 29°. The major slip asperity is dominated by reverse slip and is concentrated within a depth range of 7–16 km, which explains the significant uplift near the epicenter observed by both the Sentinel-1 ascending and descending In SAR data. Moreover, the teleseismic array waveforms indicate a northwest propagating rupture with an overall slow rupture velocity of~1.91 km/s(AK array) or 1.01 km/s(AU array).

关键词： Jishishan earthquake Rupture property Space imaging geodesy Finite fault inversion Back-projection method

在线全文

学校读者我要写书评

暂无评论

胺基材料在二氧化碳分离膜领域研究进展

化工进展 2024年第3期43卷 1374-1386页

作者：徐泽文王明王强侯影飞中国石油大学(华东)重质油国家重点实验室山东青岛266580 浙江油田西南采气厂四川宜宾645250

膜法碳捕集是实现双碳目标的重要途径,但受限于材料本身,膜材料的分离性能存在上限。胺基材料可以和CO_(2)发生可逆反应,能够显著提高膜材料的分离性能,常被作为促进传质的载体引入到膜体系。本文介绍了胺基材料促进CO_(2)传质的机理,... 详细信息

膜法碳捕集是实现双碳目标的重要途径,但受限于材料本身,膜材料的分离性能存在上限。胺基材料可以和CO_(2)发生可逆反应,能够显著提高膜材料的分离性能,常被作为促进传质的载体引入到膜体系。本文介绍了胺基材料促进CO_(2)传质的机理,重点归纳了胺基材料引入到膜体系的4类方法(涂覆法、反应法、接枝法、掺杂法)及制备膜材料的性能,并分析其优势与不足。本文指出胺基材料促进CO_(2)传质机理需要进一步探索,强调开发高胺基密度的膜材料和以更加“牢固”的方式将胺基材料引入膜体系是领域未来需重点发展的方向,利用机器学习提高膜材料设计效率对该领域发展具有指导意义。分析表明真实工况下胺基膜材料的性能稳定性、设备稳定性以及工艺稳定性是值得关注的研究领域,建立完整的胺基膜法CO_(2)捕集技术链仍面临巨大挑战。

关键词：传质二氧化碳捕集分离膜烟道气胺基材料