检索结果-南通市图书馆

Structural Characteristics and Influencing Factors of Carbon Emission Spatial Association Network:A Case Study of Yangtze River Delta City Cluster,China

引用

Chinese Geographical Science 2024年第4期34卷 689-705页

作者： bi xi SUN Renjin HU Dongou SHI Hongling ZHANG Han School of Economics and Management China University of Petroleum(Beijing)Beijing 102249China China Petroleum Planning&Engineering Institute Beijing 100083China

City cluster is an effective platform for encouraging regionally coordinated *** reduction of carbon emissions within city cluster via the spatial association network between cities can help coordinate the regional carbon emission management,realize sustainable development,and assist China in achieving the carbon peaking and carbon neutrality *** paper applies the improved gravity model and social network analysis(SNA)to the study of spatial correlation of carbon emissions in city clusters and analyzes the structural characteristics of the spatial correlation network of carbon emissions in the Yangtze River Delta(YRD)city cluster in China and its influencing *** results demonstrate that:1)the spatial association of carbon emissions in the YRD city cluster exhibits a typical and complex multi-threaded network *** network association number and density show an upward trend,indicating closer spatial association between cities,but their values remain generally ***,the network hierarchy and network efficiency show a downward trend but remain high.2)The spatial association network of carbon emissions in the YRD city cluster shows an obvious‘core-edge’distribution *** network is centered around Shanghai,Suzhou and Wuxi,all of which play the role of‘bridges’,while cities such as Zhoushan,Ma'anshan,Tongling and other cities characterized by the remote location,single transportation mode or lower economic level are positioned at the edge of the network.3)Geographic proximity,varying levels of economic development,different industrial structures,degrees of urbanization,levels of technological innovation,energy intensities and environmental regulation are important influencing factors on the spatial association of within the YRD city ***,policy implications are provided from four aspects:government macro-control and market mechanism guidance,structural characteristics of the‘core-edge’network,reconfigura

关键词： carbon emission spatial association network social network analysis(SNA) quadratic assignment procedure(QAP)model Yangtze River Delta city cluster China

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Genetic Analysis of Two Novel GPI Variants Disrupting H Bonds and Localization Characteristics of 55 Gene Variants Associated with Glucose-6-phosphate Isomerase Deficiency

引用

Current Medical Science 2024年第2期44卷 426-434页

作者： bi-xin xi Si-ying LIU Yu-ting XU De-dong ZHANG Qun HU Ai-guo LIU Department of Pediatrics Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China

Objective:Glucose-6-phosphate isomerase(GPI)deficiency is a rare hereditary nonspherocytic hemolytic anemia caused by GPI gene *** disorder exhibits wide heterogeneity in its clinical manifestations and molecular characteristics,often posing challenges for precise diagnoses using conventional *** this end,this study aimed to identify the novel variants responsible for GPI deficiency in a Chinese ***:The clinical manifestations of the patient were summarized and analyzed for GPI deficiency phenotype *** compound heterozygous variants of the GPI gene,c.174C>A(***58Lys)and c.1538G>T(***513Leu),were identified using whole-exome and Sanger *** AlphaFold program and Chimera software were used to analyze the effects of compound heterozygous variants on GPI ***:By characterizing 53 GPI missense/nonsense variants from previous literature and two novel missense variants identified in this study,we found that most variants were located in exons 3,4,12,and 18,with a few localized in exons 8,9,and *** study identified novel compound heterozygous variants associated with GPI *** pathogenic variants disrupt hydrogen bonds formed by highly conserved GPI amino ***:Early family-based sequencing analyses,especially for patients with congenital anemia,can help increase diagnostic accuracy for GPI deficiency,improve child healthcare,and enable genetic counseling.

关键词： glucose-6-phosphate isomerase deficiency whole-exome sequencing compound heterozygous variants genetic characterization hydrogen bond

来源：

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

A post-modification strategy to precisely construct dual-atom sites for oxygen reduction electrocatalysis

引用

Journal of Energy Chemistry 2024年第3期90卷 511-517,I0012页

作者： Juan Wang xinyan Liu Chang-xin Zhao Yun-Wei Song Jia-Ning Liu xi-Yao Li Chen-xi bi xin Wan Jianglan Shui Hong-Jie Peng Bo-Quan Li Jia-Qi Huang School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081China Advanced Research Institute of Multidisciplinary Science Beijing Institute of TechnologyBeijing 100081China Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical EngineeringTsinghua UniversityBeijing 100084China Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 611731SichuanChina School of Materials Science and Engineering Beihang UniversityBeijing 100191China

Dual-atom catalysts(DACs) afford promising potential for oxygen reduction electrocatalysis due to their high atomic efficiency and high intrinsic ***,precise construction of dual-atom sites remains a *** this work,a post-modification strategy is proposed to precisely fabricate DACs for oxygen reduction ***,a secondary metal precursor is introduced to the primary single-atom sites to introduce direct metal-metal interaction,which ensures the formation of desired atom pair structure during the subsequent pyrolysis process and allows for successful construction of *** as-prepared FeCo-NC DAC exhibits superior oxygen reduction electrocatalytic activity with a half-wave potential of 0,91 V *** hydrogen ***-air batteries equipped with the FeCo-NC DAC demonstrate higher peak power density than those with the Pt/C *** importantly,this post-modification strategy is demonstrated universal to achieve a variety of dual-atom *** work presents an effective synthesis methodology for precise construction of catalytic materials and propels their applications in energy-related devices.

关键词： Dual-atom catalysts Electrocatalysis Oxygen reduction reaction Post-modification Zinc–air batteries

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A three-way electrolyte with ternary solvents for high-energy-density and long-cycling lithium-sulfur pouch cells

引用

SusMat 2024年第2期4卷 1-12页

作者： Zheng Li Legeng Yu Chen-xi bi xi-Yao Li JinMa xiang Chen Xue-Qiang Zhang Aibing Chen Haoting Chen Zuoru Zhang Li-Zhen Fan Bo-Quan Li Cheng Tang Qiang Zhang Tsinghua Center for Green Chemical Engineering Electrification Beijing Key Laboratory of Green Chemical Reaction Engineering and TechnologyDepartment of Chemical EngineeringTsinghua UniversityBeijingChina School of Materials Science and Engineering Beijing Institute of TechnologyBeijingChina Institute of Advanced Materials and Technology University of Science and TechnologyBeijingChina Shanxi Research Institute for Clean Energy Tsinghua UniversityTaiyuanChina Center for Next-Generation Energy Materials and School of Chemical Engineering Sungkyunkwan UniversityJangan-GuSuwon-SiGyeonggi-DoRepublic of Korea College of Chemical and Pharmaceutical Engineering Hebei University of Science and TechnologyShijiazhuangChina Ordos Carbon Neutral Research and Application Co. Ltd.Kangbashi DistrictOrdos CityInner MongoliaChina Institute for Carbon Neutrality Tsinghua UniversityBeijingChina

Lithium–sulfur(Li–S)batteries promise high-energy-density potential to exceed the commercialized lithiumion batteries but suffer from limited cycling lifespan due to the side reactions between lithium polysulfides(LiPSs)and Li metal ***,a three-way electrolyte with ternary solvents is proposed to enable high-energy-density and long-cycling Li–S pouch ***,ternary solvents composed of 1,2-dimethoxyethane,di-isopropyl sulfide,and 1,3,5-trioxane are employed to guarantee smooth cathode kinetics,inhibit the parasitic reactions,and construct a robust solid electrolyte interphase,*** cycling lifespan of Li–S coin cells with 50μm Li anodes and 4.0 mg cm^(−2) sulfur cathodes is prolonged from88 to 222 cycles using the three-way ***-heterogeneous solvation structure of LiPSs and organic-rich solid electrolyte interphase are identified to improve the cycling stability of Li metal ***,a 3.0 Ah-level Li–S pouch cell with the three-way electrolyte realizes a high energy density of 405 Wh kg^(−1) and undergoes 27 *** affords a three-way electrolyte recipe for suppressing the side reactions of LiPSs and inspires rational electrolyte design for practical high-energy-density and long-cycling Li–S batteries.

关键词： lithium metal anodes lithium-sulfur batteries pouch cells solid electrolyte interphase three-way electrolyte

来源：

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

Mitigated reaction kinetics between lithium metal anodes and electrolytes by alloying lithium metal with low-content magnesium

引用

Journal of Energy Chemistry 2024年第8期95卷 644-650,I0014页

作者： Yang-Yang Wang Ya-Nan Wang Nan Yao Shu-Yu Sun xiao-Qing Ding Chen-xi bi Qian-Kui Zhang Zhao Zheng Cheng-bin Jin Bo-Quan Li Xue-Qiang Zhang Jia-Qi Huang School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081China Advanced Research Institute of Multidisciplinary Science Beijing Institute of TechnologyBeijing 100081China Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical EngineeringTsinghua UniversityBeijing 100084China College of Materials and Chemistry China Jiliang UniversityHangzhou 310018ZhejiangChina

Lithium(Li)metal is regarded as a promising anode candidate for high-energy-density rechargeable ***,Li metal is highly reactive against electrolytes,leading to rapid decay of active Li metal ***,alloying Li metal with low-content magnesium(Mg)is proposed to mitigate the reaction kinetics between Li metal anodes and *** atoms enter the lattice of Li atoms,forming solid solution due to the low amount(5 wt%)of *** atoms mainly concentrate near the surface of Mg-alloyed Li metal *** reactivity of Mg-alloyed Li metal is mitigated kinetically,which results from the electron transfer from Li to Mg atoms due to the electronegativity *** on quantitative experimental analysis,the consumption rate of active Li and electrolytes is decreased by using Mgalloyed Li metal anodes,which increases the cycle life of Li metal batteries under demanding ***,a pouch cell(1.25 Ah)with Mg-alloyed Li metal anodes delivers an energy density of 340 Wh kg^(-1)and a cycle life of 100 *** work inspires the strategy of modifying Li metal anodes to kinetically mitigate the side reactions with electrolytes.

关键词： Lithium metal anodes Alloying Anode/electrolyte interface Reaction kinetics Pouch cell

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

中老年住院患者同型半胱氨酸与内脏脂肪型肥胖的相关性研究

引用

河北医科大学学报 2024年第6期45卷 724-728页

作者：李碧汐刘盼李耘马丽娜首都医科大学宣武医院老年医学科北京100053 首都医科大学宣武医院老年医学科国家老年疾病临床医学研究中心北京100053

目的探讨同型半胱氨酸(homocysteine,Hcy)对中老年住院患者内脏脂肪型肥胖的影响。方法连续入选宣武医院老年医学科患者354例,采集临床和实验室资料、估算内脏脂肪面积(estimated visceral fat area,eVFA),根据是否合并内脏脂肪型肥胖(v... 详细信息

目的探讨同型半胱氨酸(homocysteine,Hcy)对中老年住院患者内脏脂肪型肥胖的影响。方法连续入选宣武医院老年医学科患者354例,采集临床和实验室资料、估算内脏脂肪面积(estimated visceral fat area,eVFA),根据是否合并内脏脂肪型肥胖(visceral fat obesity,VFO)分为VFO组(252例)和非VFO组(102例),采取横断面研究Hcy对中老年住院患者VFO的影响。结果与非VFO组比较,VFO组的体重指数、Hcy等指标均明显高于非VFO组(P<0.05)。二分类Logistic回归分析显示性别、BMI、Hcy是VFO的危险因素(P<0.05)。Spearman相关性分析显示,Hcy与eVFA呈正相关(r=0.255,P<0.001),调整年龄后仍相关。按照体重指数分层观察Hcy与体重正常组(r=0.356,P=0.001)和超重组(r=0.255,P<0.001)的eVFA均呈正相关,调整年龄后仍相关。ROC曲线得出截断值为11.05,敏感度为86%,特异度为42%(ROC曲线下面积=0.646,95%CI:0.572~0.719,P<0.001)。结论中老年住院患者Hcy与eVFA具有相关性,Hcy为VFO的危险因素,中老年住院患者应该更为严格地控制Hcy水平。

关键词：肥胖腹部同型半胱氨酸内脏脂肪面积

来源：

维普期刊数据库博看期刊

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Constructing a 700 Wh kg^(-1)-level rechargeable lithium-sulfur pouch cell

引用

Journal of Energy Chemistry 2023年第1期76卷 181-186,I0005页

作者： Qian Cheng Zi-xian Chen xi-Yao Li Li-Peng Hou Chen-xi bi Xue-Qiang Zhang Jia-Qi Huang Bo-Quan Li School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081China Advanced Research Institute of Multidisciplinary Science Beijing Institute of TechnologyBeijing 100081China Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical EngineeringTsinghua UniversityBeijing 100084China

Lithium–sulfur(Li–S)batteries are considered as highly promising energy storage devices because of their ultrahigh theoretical energy density of 2600 Wh kg^(-1).The highest practical energy density of Li–S batteries reported at pouch cell level has exceeded 500 Wh kg^(-1),which significantly surpasses that of lithium-ion ***,a 700 Wh kg^(-1)-level Li–S pouch cell is successfully *** pouch cell is designed at 6 Ah level with high-sulfur-loading cathodes of 7.4 mgScm^(-2),limited anode excess(50μm in thickness),and lean electrolyte(electrolyte to sulfur ratio of 1.7 gelectrolyteg^(-1)S).Accordingly,an ultrahigh specific capacity of 1563 m A h g^(-1)is achieved with the addition of a redox comediator to afford a practical energy density of 695 Wh kg^(-1)based on the total mass of all *** pouch cell can operate stably for three cycles and then failed due to rapidly increased polarization at the second discharge *** to failure analysis,electrolyte exhaustion is suggested as the key limiting *** work achieves a significant breakthrough in constructing high-energy-density Li–S batteries and propels the development of Li–S batteries toward practical working conditions.

关键词： Lithium–sulfur batteries Pouch cell High energy density Lithium polysulfides

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

基于失效物理的风电机组多故障可靠性建模方法

引用

科学技术与工程 2024年第15期24卷 6281-6289页

作者：葛新宇毕俊喜王妍王柳璎王国富焦佳明内蒙古工业大学机械工程学院呼和浩特010051 内蒙古工业大学航空学院呼和浩特010051 风能太阳能利用技术教育部重点实验室(内蒙古工业大学) 呼和浩特010051

风电机组由于功能结构复杂且工作环境恶劣导致其退化状态呈现多样性特点,失效形式往往是多种故障耦合作用的结果,因此单独采用某一变量的性能退化过程作为评估风电机组寿命及可靠性模型是不全面的。为了更精确反映系统内部和外部性能指... 详细信息

风电机组由于功能结构复杂且工作环境恶劣导致其退化状态呈现多样性特点,失效形式往往是多种故障耦合作用的结果,因此单独采用某一变量的性能退化过程作为评估风电机组寿命及可靠性模型是不全面的。为了更精确反映系统内部和外部性能指标的相关性,提出了一种基于失效物理的风电机组多故障可靠性建模方法。首先分析了风电机组多应力耦合下的工作环境和故障特性,通过基于失效物理的可靠性仿真分析方法获得寿命分布函数,并将其作为边缘分布函数;其次在考虑故障模式相关性时,引入两阶段估计法对Copula函数的模型进行参数估计。通过对比不同类型Copula函数的秩相关系数和平方欧氏距离,确定最优Copula函数。最后利用Skla定理和逐步分析的思想,建立多故障模式耦合下的简化风电机组可靠性模型。结果表明,考虑可靠性指标相关性时得到的可靠性结果更加合理,同时该方法避免了风电机组寿命预测和可靠性评估的保守估计,具有较好的实用性和可操作性。

关键词：风电机组失效物理故障相关性 Copula函数可靠性建模

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Premature deposition of lithium polysulfide in lithium-sulfur batteries

引用

Journal of Energy Chemistry 2023年第7期82卷 507-512,I0011页

作者： Zi-xian Chen Yu-Tong Zhang Chen-xi bi Meng Zhao Rui Zhang Bo-Quan Li Jia-Qi Huang School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081China Advanced Research Institute of Multidisciplinary Science Beijing Institute of TechnologyBeijing 100081China

Lithium-sulfur(Li-S)batteries have attracted extensive attention due to ultrahigh theoretical energy density of 2600 Wh kg^(-1).Liquid-solid deposition from dissolved lithium polysulfides(LiPSs)to solid lithium sulfide(Li_(2)S)largely determines the actual battery ***,a premature liquidsolid deposition process of LiPSs is revealed at higher thermodynamic potential than Li_(2)S deposition in Li-S *** premature solid deposit exhibits higher chemical state and hemispherical morphology in comparison with Li_(2)S,and the premature deposition process is slower in kinetics and higher in deposition ***,a supersaturation deposition mechanism is proposed to rationalize the above findings based on thermodynamic *** work demonstrates a unique premature liquid-solid deposition process of Li-S batteries.

关键词： Lithium-sulfur batteries Lithium polysulfides Liquid-solid deposition Supersaturation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

High-valence sulfur-containing species in solid electrolyte interphase stabilizes lithium metal anodes in lithium–sulfur batteries

引用

Journal of Energy Chemistry 2022年第5期31卷 300-305页

作者： Li-Peng Hou Li-Yang Yao Chen-xi bi Jin xie Bo-Quan Li Jia-Qi Huang Xue-Qiang Zhang Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical EngineeringTsinghua UniversityBeijing 100084China Advanced Research Institute of Multidisciplinary Science Beijing Institute of TechnologyBeijing 100081China

The interfacial stability of lithium metal anodes dictated by solid electrolyte interphase(SEI) is essential for long-cycling high-energy-density lithium–sulfur batteries. Nevertheless, critical components of SEI for interfacial stabilization are particularly indistinct. Herein, the effect of various sulfur-containing components in SEI for stabilizing lithium metal anodes is disclosed in lithium–sulfur batteries. High-valence sulfur-containing species(Li_(2)SO_(3) and Li_(2)SO_(4)) in SEI are conducive to uniform lithium deposition and stabilizing lithium metal anodes. In contrast, low-valence sulfur-containing species(Li_(2)S_(3) and Li_(2)S_(4)) in SEI result in aggressive lithium dendrites and dead lithium. This work identifies the role of sulfurcontaining components in SEI for stabilizing lithium metal anodes and provides rational design principles of SEI for protecting lithium metal anodes in practical lithium–sulfur batteries.

关键词： Lithium–sulfur batteries Lithium anode Solid electrolyte interphase Lithium plating Practical conditions

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：