检索结果-南通市图书馆

molybdenum Oxynitride Atomic Nanoclusters Bonded in Nanosheets of N-Doped Carbon Hierarchical Microspheres for Efficient Sodium Storage

引用

Nano-Micro Letters 2022年第10期14卷 148-163页

作者： Xiaona Pan Baojuan Xi Huibing Lu Zhengchunyu Zhang Xuguang An jie Liu Jinkui Feng Shenglin xiong School of Chemistry and Chemical Engineering State Key Laboratory of Crystal MaterialsShandong UniversityJinan 250100People’s Republic of China School of Mechanical Engineering Chengdu UniversityChengdu 610106People’s Republic of China The State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050People’s Republic of China School of Materials Science and Engineering Shandong UniversityJinan 250100People’s Republic of China

Transition metal nitrides have attracted considerable attention as great potential anode materials due to their excellent metallic conductivity and high theoretical specific ***,their cycling performance is impeded by their instability caused by the reaction ***,we report the engineering and synthesis of a novel hybrid architecture composed of moO2.0N0.5 atomic nanoclusters bonded in nanosheets of N-doped carbon hierarchical hollow microspheres(moO2.0N0.5/NC)as an anode material for sodium-ion *** facile self-templating strategy for the synthesis of moO2.0N0.5/NC involves chemical polymerization and subsequent one-step calcination *** design is benefi-cial to improve the electrochemical kinetics,buffer the volume variation of electrodes during cycling,and provide more interfacial active sites for sodium *** to these unique structural and compositional merits,these moO2.0N0.5/NC exhibits excellent sodium storage performance in terms of superior rate capability and stable long cycle *** work shows a feasible and effective way to design novel host candidates and solve the long-term cycling stability issues for sodium-ion batteries.

关键词： molybdenum oxynitride Atomic nanocluster Hollow microspheres Sodium-ion 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

QuatCNNEx:一种面向多关系模式的知识图谱嵌入模型

引用

计算机学报 2025年第1期48卷 124-135页

作者：熊伟陈浩苏鸿宇国防科技大学电子科学学院长沙410073 中国人民解放军31576部队北京100144

在大数据时代,快速的数据增长引发了信息过载的问题。一方面,在海量的数据中人们难以快速获取自己想要的内容;另一方面,一些用户虽然知道自己想要什么,但在不知道如何描述时,搜索引擎往往不能提供帮助。因此如何更加有效地表达和获取有... 详细信息

在大数据时代,快速的数据增长引发了信息过载的问题。一方面,在海量的数据中人们难以快速获取自己想要的内容;另一方面,一些用户虽然知道自己想要什么,但在不知道如何描述时,搜索引擎往往不能提供帮助。因此如何更加有效地表达和获取有价值的信息是一个挑战。知识图谱是一种被广泛使用的知识模型,可以保存大量节点和边形式的知识。知识图谱嵌入可以通过向量表示知识的语义信息,因此采用知识图谱嵌入模型可以利用图谱中的知识辅助提升人们获取信息的效率。知识图谱嵌入的主要思想是通过连续的向量空间表示知识图谱中实体和关系的语义联系。这种技术在链接预测、问答系统、推荐系统以及自然语言处理领域等知识图谱其他下游任务方面展现出较好的能力。现有的知识图谱嵌入方法主要有基于距离的模型、语义匹配模型、神经网络模型等。这些模型或者没有充分利用实体和关系的交互特征信息,或者组合关系的建模能力较弱。因此,这些方法对知识图谱中多关系模式的三元组表示能力不足。要有效解决多关系模式的建模问题,需要结合上述模型。论文提出将四元数和卷积神经网络结合的嵌入模型QuatCNNEx。该模型借鉴了QuatE的建模思想和CNN的特征提取能力。将建模过程由复数空间扩展至四元数空间,进一步提高嵌入模型的表达能力。QuatCNNEx将嵌入实体和关系的四元数作为CNN模型的输入。该模型使用四元数表达实体和关系更丰富的特征,从而具有建模多关系模式的能力。在此基础上,利用特征嵌入与头实体嵌入的Hadamard积使得头实体嵌入得到关系嵌入的特征。然后,再通过关系嵌入与头实体嵌入的Hamilton积实现头实体在四元数空间中的旋转,得到尾实体的嵌入表示。从而使用Hadamard积和Hamilton积的组合运算,通过迭代优化得到三元组的嵌入表示。通过链接预测实验,论文提出的方法与现有的主要模型在MRR、Hit@3、Hit@1指标上进行了对比。实验结果表明,本文方法在关系数量更多的基准测试集上取得了最优结果。与神经网络模型ConEx和基于四元数的模型QuatE相比,QuatCNNEx在MRR、Hit@3、Hit@1三个指标上分别提高0.3%和0.3%、0.5%和1%、0.4%和0.4%,这表明该模型能够有效利用实体和关系的交互特征信息表示知识图谱中的多关系模式。

关键词：知识图谱链接预测嵌入表示四元数卷积神经网络

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

Oxidation inhibition of sulfite in dual alkali flue gas desulfurization system

引用

Journal of Environmental Sciences 2007年第2期19卷 226-231页

作者： mo Jian-song WU Zhong-biao CHENG Chang-jie GUAN Bao-hong ZHAO Wei-rong Department of Environmental Engineering Zhejiang University Hangzhou 310027 China Zhejiang Tianlan Desulfurization and Dust-Removal Co. Ltd. Hangzhou 310012 China

A laboratory-scale well-mixed thermostatic reactor with continuously blasting air was used to investigate the oxidation inhibition of sulfite in dual alkali flue gas desulfurization （FGD） system. The effects of operating parameters such as pH value and catalyst concentration on the oxidation were studied. Sodium thiosulfate was used in the system, and was found that it significantly inhabited the sulfite oxidation. In the absence of catalyst, sodium thiosulfate at 12.67 mmol/L had an inhibition efficiency of approximately 98%. While in the presence of catalyst, sodium thiosulfate at 26.72 mmol/L had an inhibition efficiency less than 85.0%. The oxidation reaction order of sulfite in the sodium thiosulfate was determined to be -1.90 and 4）.55 in the absence and presence of the catalyst, respectively. Apparent activation energy of oxidation inhibition was calculated to be 53.9 kJ/mol. Pilot tests showed that the consumption rate of thiosulfate agreed well with the laboratory-scale experimental results.

关键词： dual alkali sodium sulfite oxidation inhibition sodium thiosulfate

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

Pelvic lipomatosis and renal transplantation:A case report

引用

World Journal of Clinical Cases 2020年第16期8卷 3548-3552页

作者： jie Zhao Ying-Xin Fu Gang Feng Chun-Bai mo Department of Kidney Transplant Tianjin First Central HospitalTianjin 300192China

BACKGROUND Pelvic lipomatosis is a rare disease of unknown etiology,characterized by the overgrowth of pelvic adipose tissue that causes compression of the urinary tract including the bladder and ureters,rectum and blood *** patient may progressively develop obstructive uropathy which could subsequently lead to renal *** present,there are no reports of renal transplantation due to uremia caused by pelvic *** ideal management of patients with pelvic lipomatosis after renal transplantation is not yet well-established due to the lack of literature and follow-up *** SUMMARY We report a 37-year-old male patient with pelvic lipomatosis who received a successful living donor renal transplantation on July 22,*** operation was complicated as the iliac vessels and bladder were wrapped entirely in excessive abnormal *** external iliac artery and vein were located using ultrasonographic *** adipose tissue around the right bladder was removed as far as possible,and the graft ureter was reimplanted into the bladder,using the Lich-Gregoir *** 22 mo after transplantation,graft percutaneous nephrostomy was performed under ultrasonographic guidance for urinary diversion due to hydronephrosis of the graft ***-up at four years showed that the renal allograft function was *** When patients with pelvic lipomatosis develop renal failure,renal transplantation could be a feasible treatment strategy.

关键词： Pelvic lipomatosis Kidney transplantation Uremia Hydronephrosis Bladder Urinary obstruction Case report

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

Orbital decompression surgery and horse chestnut seed extract improved superior orbital vein blood flow in patients with thyroid-associated ophthalmopathy

引用

International Journal of Ophthalmology(English edition) 2016年第6期9卷 869-875页

作者： Yu-jie Wu Xin Wei Man-Yi Xiao Wei xiong Department of Ophthalmology and Eye Disease Research Center the Second Xiangya Hospital of Central South UniversityChangsha 410011Hunan PUniversityChangsha 410011Hunan ProvinceChinarovinceChina

AIM： To evaluate the efficacy and safety of orbital decomposition （OD） surgery in combination with horse chestnut seed extract （HCSE）, as compared to OD atone, in patients with thyroid-associated ophthalmopathy （TAO）. METHODS： Sixty-two orbits from 62 TAO patients were randomly assigned to OD or OD＋HCSE at 1：1 ratio （31 received OD alone, 31 received OD ＋HCSE）. Forty-two orbits from 21 healthy subjects were used as controls. Complete ophthalmic examination and color Doppler flow imaging （CDFI） were performed before surgery and 3mo post-surgery on all 62 orbits from the TAO patients. CDFI were also performed on the 42 control orbits, The effect of OD ＋HCSE and OD alone on TAO orbits was compared on several endpoints, including superior ophthalmic vein blood flow （SOVBF） parameters, subjective assessment, soft tissue involvement, lid retraction, diplopia, eye movement restriction, degree of exophthalmos, and intraocular pressure. The control orbits were used as reference for the SOVBF parameters. RESULTS： OD surgery with or without HCSE improved SOVBF, symptoms and soft tissue involvement, decreased degree of exophthalmos and intraocular pressure in orbits of TAO patients. The OD ＋HCSE combination led to significantly better improvement of SOVBF than OD alone. The differences between the reductions of SOVBF in the two groups are 1.26 cmls in max-volecity and 0.52 cm/s in min-voiecity （P〈0.0001）. CONCLUSION： SOVBF is significantly reduced in the orbits affected with TAO, indicating that congestion may be an important factor contributing to TAO pathogenesis. OD surgery improves the SOVBF, and combination of HCSE medication and OD surgery further improved venous return than OD surgery alone.

关键词： thyroid-associated ophthalmopathy colorDoppler flow imaging superior orbital vein orbitaldecompression horse chestnut seed extract

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

Photodynamic therapy regulates fate of cancer stem cells through reactive oxygen species

引用

World Journal of Stem Cells 2020年第7期12卷 562-584页

作者： Zi-Jian Zhang Kun-Peng Wang Jing-Gang mo Li xiong Yu Wen Department of General Surgery Second Xiangya HospitalCentral South UniversityChangsha 410011Hunan ProvinceChina Department of General Surgery Taizhou Central Hospital(Taizhou University Hospital)Taizhou 318000Zhejiang ProvinceChina

Photodynamic therapy(PDT)is an effective and promising cancer *** directly generates reactive oxygen species(ROS)through photochemical *** oxygen-dependent exogenous ROS has anti-cancer stem cell(CSC)*** addition,PDT may also increase ROS production by altering metabolism,endoplasmic reticulum stress,or potential of mitochondrial *** is known that the half-life of ROS in PDT is short,with high reactivity and limited diffusion ***,the main targeting position of PDT is often the subcellular localization of photosensitizers,which is helpful for us to explain how PDT affects CSC characteristics,including differentiation,selfrenewal,apoptosis,autophagy,and *** speaking,excess ROS will damage the redox system and cause oxidative damage to molecules such as DNA,change mitochondrial permeability,activate unfolded protein response,autophagy,and CSC resting ***,understanding the molecular mechanism by which ROS affect CSCs is beneficial to improve the efficiency of PDT and prevent tumor recurrence and *** this article,we review the effects of two types of photochemical reactions on PDT,the metabolic processes,and the biological effects of ROS in different subcellular locations on CSCs.

关键词： Cancer stem cells Photodynamic therapy Reactive oxygen species Photosensitizer Mitochondrial Endoplasmic reticulum

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

Distributed Application Addressing in 6G Network

引用

China Communications 2024年第4期21卷 193-207页

作者： Liu jie Chen Sibo Liu Yuqin mo Zhiwei Lin Yilin Zhu Hongmei He Yufeng China Telecom Research Institute Guangzhou 510632China

To ensure the extreme performances of the new 6G services,applications will be deployed at deep edge,resulting in a serious challenge of distributed application *** paper traces back the latest development of mobile network application addressing,analyzes two novel addressing methods in carrier network,and puts forward a 6G endogenous application addressing scheme by integrating some of their essence into the 6G network architecture,combining the new 6G capabilities of computing&network convergence,endogenous intelligence,and communication-sensing *** paper further illustrates how that the proposed method works in 6G networks and gives preliminary experimental verification.

关键词： application addressing CNC(Computing&Network Convergence) DNS(Domain Name System) ICN(Information-Centric Network) 6G

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

生成式人工智能对我国服务业就业影响研究

引用

陕西师范大学学报(哲学社会科学版) 2025年第1期54卷 102-114页

作者：孔祥利莫正晖陕西师范大学国际商学院陕西西安710119

生成式人工智能的技术特质表现为智能创造、交互适应、跨模态融合、创新识别等,对服务业就业市场带来劳动力成本和劳动技能的变化、产生劳动方式与劳动结构的变化、造成就业市场的“极化”现象与网络效应。生成式人工智能影响服务业的... 详细信息

生成式人工智能的技术特质表现为智能创造、交互适应、跨模态融合、创新识别等,对服务业就业市场带来劳动力成本和劳动技能的变化、产生劳动方式与劳动结构的变化、造成就业市场的“极化”现象与网络效应。生成式人工智能影响服务业的就业效应,从数量、结构、形态和质量4个维度呈现出有利于就业的创造效应、协作效应与平台化效应,同时也存在不利于就业的替代效应、转移效应与结构效应。结合新质生产力发展要求和就业优先战略实施,可以采取以下对策措施:一是推动生成式人工智能的跨界与融合发展,提升服务业的就业创造能力;二是应对生成式人工智能对传统服务业就业的冲击,提高从业者的岗位匹配度;三是加强人机协作以提升劳动力市场的适应性,构建新型劳动协作关系;四是加强生成式人工智能应用的监管力度,确保就业市场的健康有序发展。

关键词：生成式人工智能服务业就业需求高质量发展跨界融合

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

Dynamic Pendulum Effect of an Exceptionally Flexible Pillared-Layer Metal-Organic Framework

引用

Chinese Journal of Chemistry 2021年第10期39卷 2718-2724页

作者： Hao-Long Zhou jie Bai Xiao-Yun Tian Zong-Wen mo Xiao-Ming Chen moE Key Laboratory of Bioinorganic and Synthetic Chemistry School of ChemistrySun Yat-Sen UniversityGuangzhouGuangdong510275 China Department of Chemistry ond Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province Shantou UniversityShantouGuangdong 515063China

Main observation and conclusion Magnifying the controllable directional motions of molecular machines to the macroscopic levels is a significant topic for *** metal–organic frameworks with long-range order and responsive structural transformation under external stimuli may be an appropriate platform for achieving the *** taking advantage of the single-crystal to single-crystal manner of soft porous crystals,we utilize single-crystal X-ray diffraction to directly observe the dynamic structural inversion of a new three-fold interpenetrated pillared-layer metal-organic framework[Co(edba)(bpy)](MCF-83,H2edba=4,4’-(ethyne-1,2-diyl)dibenzoic acid,bpy=4,4’-bipyridine).more interestingly,the dynamic inversions of the pillars and layers are selectively guest-controllable and independent,allowing precise control of the directional shape changes,which is the key of constructing intelligent materials to accomplish a complex *** mechanism is further studied by combining the X-ray diffraction analyses,sorption measurements and molecular simulations.

关键词： Porous coordination polymers Metal-organic frameworks Structural transformation X-ray diffraction Adsorption

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

美国高水平行业特色高校如何培养航天工程人才——以美国空军学院为例

引用

现代大学教育 2025年第1期041卷 40-50页

作者：莫甲凤黄涣杨乐平中南大学教育研究所国防科技大学空天科学学院

在建设航天强国的背景下，中国航天工程人才培养面临新的变革与挑战。研究基于系统耦合理论探讨美国高水平行业特色高校培养航天工程人才的实践，为促进中国航天工程人才培养的高质量发展提供借鉴。美国高水平行业特色高校的航天工程人... 详细信息

在建设航天强国的背景下，中国航天工程人才培养面临新的变革与挑战。研究基于系统耦合理论探讨美国高水平行业特色高校培养航天工程人才的实践，为促进中国航天工程人才培养的高质量发展提供借鉴。美国高水平行业特色高校的航天工程人才培养与国家战略、行业发展以及科学技术紧密耦合，其特色体现在以下5个方面：一是工具性与价值性紧密耦合的人才培养目标框架；二是学科交叉性与未来职业性紧密耦合的教学课程体系；三是深度与广度紧密耦合的学术顶峰体验；四是进阶式与多样化紧密耦合的工程领导力课程；五是院校与行业紧密耦合的实训演习演练。中国高校培养航天工程人才可选择如下路径：面向未来国际竞争与科技发展的不确定性与复杂性，建立复杂系统耦合思维范式；推进航天工程人才培养目标向高阶化、综合化与多元化方向转型；搭建跨学科集成与多学科耦合的课程体系；构建应用导向的工程领导力要素模型；搭建与军队、航天工业协同联动的实践实训演练平台。

关键词：航天工程人才培养行业特色战略需求系统耦合美国

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：