检索结果-南通市图书馆

Ultra‑Efficient and Cost‑Effective Platinum Nanomembrane Electrocatalyst for Sustainable Hydrogen Production

Nano-Micro Letters 2024年第6期16卷 95-110页

作者： Xiang Gao Shicheng Dai Yun Teng Qing wang Zhibo Zhang Ziyin Yang Minhyuk Park Hang wang Zhe Jia yunjiang wang Yong Yang Department of Mechanical Engineering College of EngineeringCity University of Hong KongTat Chee AvenueKowloon TongKowloonHong KongPeople’s Republic of China State Key Laboratory of Nonlinear Mechanics Institute of MechanicsChinese Academy of SciencesBeijingPeople’s Republic of China School of Engineering Science University of Chinese Academy of SciencesBeijingPeople’s Republic of China Laboratory for Microstructures Institute of MaterialsShanghai UniversityShanghaiPeople’s Republic of China School of Materials Science and Engineering Jiangsu Key Laboratory for Advanced Metallic MaterialsSoutheast UniversityNanjingPeople’s Republic of China Department of Materials Science and Engineering College of EngineeringCity University of Hong KongTat Chee AvenueKowloon TongKowloonHong KongPeople’s Republic of China

Hydrogen production through hydrogen evolution reaction(HER)offers a promising solution to combat climate change by replacing fossil fuels with clean energy ***,the widespread adoption of efficient electrocatalysts,such as platinum(Pt),has been hindered by their high *** this study,we developed an easy-to-implement method to create ultrathin Pt nanomembranes,which catalyze HER at a cost significantly lower than commercial Pt/C and comparable to non-noble metal *** Pt nanomembranes consist of highly distorted Pt nanocrystals and exhibit a heterogeneous elastic strain field,a characteristic rarely seen in conventional *** unique feature results in significantly higher electrocatalytic efficiency than various forms of Pt electrocatalysts,including Pt/C,Pt foils,and numerous Pt singleatom or single-cluster *** research offers a promising approach to develop highly efficient and cost-effective low-dimensional electrocatalysts for sustainable hydrogen production,potentially addressing the challenges posed by the climate crisis.

关键词： Platinum Hydrogen evolution reaction Lattice distortion Heterogeneous strain

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

空间耦合量子LDPC码的双窗口滑动译码

引用

西安电子科技大学学报 2024年第1期51卷 11-20页

作者：王云江朱高辉杨宇霆马钟魏璐石莎西安电子科技大学通信工程学院陕西西安710071 西安电子科技大学广州研究院广东广州510555 西安微电子技术研究所陕西西安710065

量子纠错码是应对量子计算过程中不可避免的噪声干扰的关键途径。和其经典情形一样,空间耦合量子LDPC码理论上也可在纠错性能和译码时延间取得良好的均衡。考虑到目前采用常规置信传播算法(BPA)的空间耦合量子LDPC(SC-QLDPC)码在译码过... 详细信息

量子纠错码是应对量子计算过程中不可避免的噪声干扰的关键途径。和其经典情形一样,空间耦合量子LDPC码理论上也可在纠错性能和译码时延间取得良好的均衡。考虑到目前采用常规置信传播算法(BPA)的空间耦合量子LDPC(SC-QLDPC)码在译码过程中仍存在复杂度高和译码时延长的问题,受经典滑窗译码算法的启发,并结合和利用SC-QLDPC码所对应的两个奇偶校验矩阵在主对角线和副对角线上具有非零对角带的结构特点,提出了针对量子SC-QLDPC码的滑窗译码算法(称为量子双窗口滑动译码算法)。在该策略中,通过窗口在两个经典校验矩阵主副对角线上的同时滑动,保证了相应量子比特部分译码所需的相位与比特翻转错误图样信息的提取,从而使其在译码性能和时延之间取得良好均衡。对所提量子双窗口滑动译码算法进行仿真验证,结果表明其不仅能提供灵活的低时延译码输出,并且当窗口扩大时,其译码性能逼近标准的量子置信传播算法,显著提升了SC-QLDPC码的应用范围。

关键词： LDPC码空间耦合量子码双窗口滑动 BP译码

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

Aging and rejuvenation during high-temperature deformation in a metallic glass

引用

Science China(Physics,Mechanics & Astronomy) 2022年第10期65卷 93-100页

作者： Langting Zhang yunjiang wang Yong Yang Jichao Qiao School of Mechanics Civil Engineering and ArchitectureNorthwestern Polytechnical University(NPU)Xi’an 710072China State Key Laboratory of Nonlinear Mechanics Institute of MechanicsChinese Academy of SciencesBeijing 100190China School of Engineering Science University of Chinese Academy of SciencesBeijing 100049China Department of Mechanical Engineering College of EngineeringCity University of Hong KongHong Kong 999077China Department of Materials Science and Engineering College of EngineeringCity University of Hong KongHong Kong 999077China Innovation Center NPU-ChongqingChongqing 401135China

High-temperature deformation has been demonstrated as an effective measure to rejuvenate and optimize the mechanical properties of metallic glasses(MGs).Clarifying the competition between aging and rejuvenation during high-temperature deformation is helpful in rejuvenating MGs *** of aging and rejuvenation in a La_(30)Ce_(30)Ni_(10)Al_(20)Co_(10)MG were investigated via high-temperature deformation and mechanical *** coupling of thermal history,aging,and mechanical disordering determines the transient deformation and the structural state of *** stress overshoot and anelastic deformation induce structural rejuvenation,increasing the concentration of defects and erasing thermal ***,the eventually steady-state condition is dependent on ambient temperature and strain rate instead of the initial ***,the one-to-one relationship between defect concentration and strain rate clarifies the structural nature of rejuvenation in amorphous *** a relationship also contributes toward a comprehensive understanding of the structural rejuvenation behavior in amorphous materials.

关键词： metallic glass aging rejuvenation homogenous flow free volume

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

The anelastic origin of mechanical cycling induced rejuvenation in the metallic glass

引用

Science China(Physics,Mechanics & Astronomy) 2023年第8期66卷 93-100页

作者： Langting Zhang yunjiang wang Yong Yang Jichao Qiao School of Mechanics CivilEngineering and ArchitectureNorthwestern Polytechnical UniversityXi'an 70072China State Key Laboratory of Nonlinear Mechanics Institute of MechanicsChinese Academy of SciencesBeijing 100190China School of Engineering Science University of Chinese Academy of SciencesBeijing 100049China Department of Mechanical Engineering College of EngineeringCity University of Hong KongHong Kong 999077China Department of Materials Science and Engineering College of EngineeringCity University of Hong KongHong Kong 999077China Innovation Center NPU-ChongqingChongqing 401135China

Mechanical cycling is one of the effective methods to rejuvenate metallic glasses(MGs)and improve their mechanical *** anelastic origin of the rejuvenation by mechanical cycling in a La_(30)Ce_(30)Ni_(10)Al_(20)Co_(10) MG was investigated via differential scanning calorimetry(DSC)and dynamic mechanical analysis(DMA).We demonstrate that mechanical cycling promotes the activation of flow defects with short relaxation times,leading to anelastic strains and therefore considerable energy storage,which manifests itself as larger relaxation enthalpy on the DSC curves of ***,the MGs release the excess relaxation enthalpy caused by anelastic strain with time,thus suppressing atomic mobility and elevating β relaxation activation *** strategy of mechanical cycling at small strains,as demonstrated in the current work,can expand the energy states of MGs over a wide range of relaxation enthalpies.

关键词： metallic glass mechanical cycling rejuvenation anelastic strain structural heterogeneity

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

Influence of oscillation strain on the dynamic mechanical relaxation of a La-based metallic glass

引用

Science China(Technological Sciences) 2023年第11期66卷 3309-3316页

作者： LIANG ShuYi ZHANG LangTing wang yunjiang PINEDA E QIAO JiChao School of Mechanics Civil Engineering and ArchitectureNorthwestern Polytechnical UniversityXi’an 710072China State Key Laboratory of Nonlinear Mechanics Institute of MechanicsChinese Academy of SciencesBeijing 100190China School of Engineering Science University of Chinese Academy of SciencesBeijing 100049China Department of Physics Institute of Energy TechnologiesUniversitat Politècnica de Catalunya–BarcelonaTechBarcelona 08019Spain Innovation Center NPU-ChongqingChongqing 401135China

Dynamic mechanical relaxation processes,particularly secondary relaxation processes,are closely related to the mechanical and physical properties of metallic *** the effect of oscillation strain amplitude on the secondary relaxation of a typical Labased metallic glass was studied using the dynamic mechanical analysis *** apparent activation energy of theβrelaxation is shown to increase with the oscillation strain *** it changes from 0.02%to 0.16%,the activation energy increases from 0.73 to 0.96 ***,the intensity of theβrelaxation shifts toward high ***,the apparentβrelaxation is found to be sensitive to the physical aging below the glass transition *** findings suggest a correlation between the inelastic deformation and the relaxation behavior of amorphous metals.

关键词： metallic glass dynamic mechanical analysis internal friction βrelaxation oscillation amplitude

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

Tailoring the mechanical properties of bulk metallic glasses via cooling from the supercooled liquid region

引用

Science China(Technological Sciences) 2023年第1期66卷 173-180页

作者： ZHANG LangTing DUAN YaJuan wang yunjiang YANG Yong QIAO JiChao School of Mechanics Civil Engineering and ArchitectureNorthwestern Polytechnical UniversityXi'an 710072China Department of Physics Barcelona Research Center in Multiscale Science and TechnologyInstitute of Energy TechnologiesUniversitat PolitecnicadeCatalunyaBarcelona08019Spain State Key Laboratory of Nonlinear Mechanics Institute of MechanicsChinese Academy of SciencesBeijing 100190China School of Engineering Science University of Chinese Academy of SciencesBeijing 100049China Department of Mechanical Engineering College of EngineeringCity University of Hong KongHong Kong 999077China Department of Materials Science and Engineering College of EngineeringCity University of Hong KongHong Kong 99077China Innovation Center NPU-ChongqingChongqing 401135China

Structural rejuvenation is vital and attractive for modulating the energetic state and structural heterogeneity of bulk metallic glasses(BMGs). In this paper, we show that cooling a BMG from a supercooled liquid region at laboratory rates can reverse the relaxation enthalpy lost during the preceding structural relaxation. Increasing the cooling rate is beneficial for enhancing atomic mobility and dynamic mechanical relaxation intensity. Therefore, this rejuvenation methodology promotes tailoring the mechanical properties of BMGs and provides a comprehensive understanding of the rejuvenation mechanism.

关键词： bulk metallic glass thermal rejuvenation supercooled liquid region mechanical relaxation structural heterogeneity

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

Surface defect and lattice engineering of Bi_(5)O_(7)Br ultrathin nanosheets for efficient photocatalysis

引用

Nano Research 2023年第1期16卷 248-255页

作者： Yunjing wang Hongchen He yunjiang wang Meili Xie Feng Jing Xianhong Yin Feilong Hu Yan Mi Key Laboratory of Chemistry and Engineering of Forest Products State Ethnic Affairs CommissionGuangxi Key Laboratory of Chemistry and Engineering of Forest ProductsGuangxi Collaborative Innovation Center for Chemistry and Engineering of Forest ProductsGuangxi Minzu UniversityNanning 530006China

The effective separation and migration of photogenerated charge carriers in bulk and on the surface of photocatalysts will significantly promote photocatalytic ***,the synchronous regulation of photocharges on both counts is ***,the simultaneous separation of bulk and surface photocharges is conducted to enhance photocatalytic activity by coupling the surface defects and lattice engineering of bismuth *** depth-modulated Bi_(5)O_(7)Br ultrathin nanosheets with an abundance of bismuth in the crystal structure increased the internal electric field,which propelled the separation and migration of photocharges from bulk to the *** of oxygen vacancies(OVs)on the nanosheet surface forms local electric fields,which can stimulate the migration of charges to active sites on the catalyst ***,the OV-assembled Bi_(5)O_(7)Br nanosheets demonstrated enhanced photocatalytic degradation efficiency under simulated solar-light *** study proved the possibility of charge governing via electric field modulation based on an integrated strategy.

关键词： lattice engineering internal electric field oxygen vacancies photocharge separation bismuth oxybromide

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

新农科背景下涉农高职院校耕读育人模式建设探索与实践

引用

农业工程 2024年第8期14卷 149-153页

作者：史欣博王云江赵新战王红相杨凌职业技术学院陕西杨凌712100

在新农科建设背景下,为培养知农爱农新型人才,迫切需要打造人才培养新模式。耕读教育是落实立德树人的关键环节,对提升涉农高职院校学生学农、知农、爱农的素养和专业实践能力具有重要意义。分析了耕读育人模式建设的重要性,讨论现阶段... 详细信息

在新农科建设背景下,为培养知农爱农新型人才,迫切需要打造人才培养新模式。耕读教育是落实立德树人的关键环节,对提升涉农高职院校学生学农、知农、爱农的素养和专业实践能力具有重要意义。分析了耕读育人模式建设的重要性,讨论现阶段耕读教育存在的问题,从涉农高职院校耕读育人模式视角,以杨凌职业技术学院为例,提出了“五融入五强化”耕读育人模式,以期提升新型人才培养质量,为涉农高职院校耕读育人模式建设提供借鉴与参考。

关键词：新农科涉农高职院校五融入五强化耕读教育育人模式

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

miR-652-3p通过靶向Nptn抑制胶质母细胞瘤的增殖和迁移

引用

临床神经外科杂志 2024年第1期21卷 43-48,53页

作者：胥敏陈正楼王云江火旭其张新化王宏盛盐城市第三人民医院神经外科南通大学第六附属医院南京医科大学盐城临床医学院盐城224002

目的探讨miR-652-3p对胶质母细胞瘤(GAM)增殖和迁移的影响。方法用miR-652-3p模拟物转染胶质母细胞系C6和U87,然后分别通过CCK8、细胞流式、EdU、Transwell和划痕实验研究miR-652-3p对细胞增殖和迁移的影响。利用实时定量聚合酶链反应... 详细信息

目的探讨miR-652-3p对胶质母细胞瘤(GAM)增殖和迁移的影响。方法用miR-652-3p模拟物转染胶质母细胞系C6和U87,然后分别通过CCK8、细胞流式、EdU、Transwell和划痕实验研究miR-652-3p对细胞增殖和迁移的影响。利用实时定量聚合酶链反应(qRT-PCR)、蛋白质免疫印迹(Western Blot)和双荧光素酶报告基因实验检测miR-652-3p与Neuroplastin(Nptn)的互作关系。通过CCK8、细胞流式、EdU、Transwell和划痕实验研究Nptn对细胞增殖和迁移的影响。结果 miR-652-3p的过表达可以抑制C6和U87细胞的增殖和迁移;双荧光素酶报告基因实验结果表明miR-652-3p可以与Nptn结合,Nptn表达水平受到miR-652-3p水平的影响;干扰Nptn的表达可以抑制C6和U87细胞的增殖和迁移。结论 miR-652-3p通过靶向Nptn抑制GBM的增殖和迁移。

关键词： miR-652-3p Nptn 胶质母细胞瘤增殖迁移

来源：

维普期刊数据库

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

脑室-腹腔分流术联合颅骨修补术同期治疗脑积水的效果分析

引用

系统医学 2024年第2期9卷 165-168页

作者：王云江陈正楼胥敏火旭其薛亚季祥宋孟若王宏盛盐城市第三人民医院神经外科江苏盐城224000

目的在脑积水患者的治疗中同期开展脑室-腹腔分流术、颅骨修补术并分析其效果。方法选取2016年9月—2023年8月在盐城市第三人民医院行相关手术治疗的60例脑积水患者为研究对象。采用随机系统抽选法,将患者分为两组,对照组(30例)先做脑室... 详细信息

目的在脑积水患者的治疗中同期开展脑室-腹腔分流术、颅骨修补术并分析其效果。方法选取2016年9月—2023年8月在盐城市第三人民医院行相关手术治疗的60例脑积水患者为研究对象。采用随机系统抽选法,将患者分为两组,对照组(30例)先做脑室-腹腔分流手术、后做颅骨修补手术,而观察组(30例)则同期进行以上两种手术。对比分析临床治疗效果。结果观察组患者日常生活活动能力表评分、运动功能、认知功能、格拉斯哥预后分级评分和卡氏功能状态评分均优于对照组,差异有统计学意义(P均<0.05);观察组治疗总有效率高达96.67%,相较对照组的73.33%显著更高,差异有统计学意义(χ^(2)=6.405,P=0.011);观察组并发症发生率相较对照组显著更低,差异有统计学意义(P<0.05)。结论脑室-腹腔分流术和颅骨修补术同期用于脑积水患者治疗中,具有治疗意义。

关键词：脑室-腹腔分流术颅骨修补术脑积水认知功能

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：