检索结果-南通市图书馆

Journal of Beijing Institute of Technology 2014年第1期23卷 126-130页

作者： ZHANG Qing-wen bao Han ZHAO Feng-qin bao si-miao WEI Tian-xin ZHANG Peng CUI He Key Laboratory of Cluster Science of Ministry of Education Beijing Institute of Technology Beijing 100081 China China Naval Academy of Armament Beijing 100073 China China Ship Research Development Academy Beijing 100085 China

A novel surface plasmon resonance （SPR） sensor based on molecularly imprinted films （MIFs） was developed for the detection of pentaerythritol tetranitrate （PETN）. In this work, the thin MIFs were formed on a gold sensor chip through thermal co-polymerization of functional mono- mers （methacrylic acid, MAA） and crosslinking monomers （ethylene glycol dimethacrylate, EGD- MA） in the presence of template molecules PETN. The template molecules PETN were subsequently removed from the MIFs simply by rinsing the MIFs with a mixture of acetonitrile and acetic acid 9：1 （ v/v）, thus the recognition sites were formed for specific detection of PETN. According to the mass coverage equation, the surface coverage of removed PETN from MIFs was about 10. 8 ng/mm~. The developed SPR sensor allowed for the detection of PETN at concentration down to 10-~~ mol/L. A control experiment utilizing an analogue cyclotrimethylenetrinitramine （RDX） showed MIFs＇ good selectivity to PETN.

关键词： surface plasmon resonance (SPR) molecularly imprinted films (MIFs) pentaerythritoltetranitrate (PETN)

Hemin-functionalized polypyrrole/paper-derived biochar electrocatalysts:Enhanced sensor platforms for H2O2

在线全文

学校读者我要写书评

暂无评论

Progress in Natural Science:Materials International 2024年第2期34卷 280-289页

作者： Yuhang Jiang Tianshuang bao Xiangchuan Zhao Qi Wang Yue Cao Jun Cao Xingxiang Ji Weimeng si School of Materials Science and Engineering Shandong University of Technology State Key Laboratory of Biobased Material and Green Papermaking Qilu University of Technology (Shandong Academy of Sciences)

As a H2O2electrochemical biomimetic enzyme sensor,the stability,repeatability and sensitivity of hemin-based composites are closely connected with the loading of hemin on high-performance ***,polypyrrole/paper-derived carbon（PPy/PC） nanocomposite was used for the construction of a hemin-based non-enzymatic sensor to detect *** the poplar wood is used to obtain crude cellulose through a straightforward papermaking *** crude cellulose is then subjected to pyrolysis to yield the desired paper-based carbon *** hemin-decorated PPy/PC was demonstrated possessing remarkable electrocatalytic activity for H2O2reduction,and the possible mechanism of the reactions was *** electrochemical sensor,utilizing the HPPy/PC composite,achieved a low detection limit of 30 nM,along with enhanced selectivity and stability under optimized *** favorable results observed can primarily be attributed to the superior electrochemical performance of PPy/PC,as well as its unique 3D interconnected *** structure effectively impedes the self-dimerization of hemin,thereby ensuring the generation of active catalytic species.

关键词： Biochar H2O2 sensing Hemin Paper-based carbon materials Paper-making process

Brain-inspired artificial intelligence research: A review

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Science China Technological Sciences 2024年第8期67卷 2282-2296页

作者： WANG GuoYin bao HuaNan LIU Qun ZHOU TianGang WU si HUANG TieJun YU ZhaoFei LU CeWu GONG YiHong ZHANG ZhaoXiang HE Sheng Chongqing Key Laboratory of Computational Intelligence Chongqing University of Posts and Telecommunications Key Laboratory of Cyberspace Big Data Intelligent Security Chongqing University of Posts and Telecommunications College of Computer and Information Science Chongqing Normal University State Key Laboratory of Brain and Cognitive Science Institute of Biophysics Chinese Academy of Sciences Institute of Biophysics Chinese Academy of Sciences School of Psychological and Cognitive Sciences Peking University State Key Laboratory of Multimedia Information Processing School of Computer Science Peking University Department of Computer Science School of Electronics Information and Electrical Engineering Shanghai Jiao Tong University Faculty of Electronic and Information Engineering Xi'an Jiaotong University The Center for Research on Intelligent Perception and Computing Institute of Automation Chinese Academy of Sciences

Artificial intelligence(AI) systems surpass certain human intelligence abilities in a statistical sense as a whole, but are not yet the true realization of these human intelligence abilities and behaviors. There are differences, and even contradictions, between the cognition and behavior of AI systems and humans. With the goal of achieving general AI, this study contains a review of the role of cognitive science in inspiring the development of the three mainstream academic branches of AI based on the three-layer framework proposed by David Marr, and the limitations of the current development of AI are explored and analyzed. The differences and inconsistencies between the cognition mechanisms of the human brain and the computation mechanisms of AI systems are analyzed. They are found to be the cause of the differences and contradictions between the cognition and behavior of AI systems and humans. Additionally, eight important research directions and their scientific issues that need to focus on braininspired AI research are proposed: highly imitated bionic information processing, a large-scale deep learning model that balances structure and function, multi-granularity joint problem solving bidirectionally driven by data and knowledge, AI models that simulate specific brain structures, a collaborative processing mechanism with the physical separation of perceptual processing and interpretive analysis, embodied intelligence that integrates the brain cognitive mechanism and AI computation mechanisms,intelligence simulation from individual intelligence to group intelligence(social intelligence), and AI-assisted brain cognitive intelligence.

关键词： artificial intelligence cognitive science brain science intelligence science large language model

同方期刊数据库

The effect of Jiangan Xiaozhi Formula on oxidative stress and inflammatory factors in patients with non-alcoholic fatty liver disease

在线全文

学校读者我要写书评

暂无评论

Clinical Research Communications 2024年第2期7卷 23-26页

作者： si Wang Jia Zhu Ning Wang Jia-bao Liao Yunnan University of Chinese Medicine Kunming 650599China Department of Emergency Jiaxing Hospital of Traditional Chinese MedicineJiaxing 314001China.

Objective:To investigate the effects of Jiangan Xiaozhi Formula(JGXZ)on oxidative stress and inflammatory factors in patients with non-alcoholic fatty liver disease(NAFLD).Methods:Between September 2022 and December 2023,our hospital admitted a total of 58 patients with *** patients were split into two groups at random:one for experimentation and the other for *** were 27 patients in the experimental group at the end,compared to 26 in the control group,reasonable exercise,weight management,lipid regulation,and oral polyene phosphatidylcholine capsules(PPC).The experimental group received JGXZ in addition to the above treatments for 12 consecutive *** in Traditional Chinese Medicine(TCM)syndrome scores,blood lipids,liver function indicators,the levels of oxidative stress markers,such as malondialdehyde(MDA),glutathione peroxidase(GSH-Px),and superoxide dismutase(SOD),as well as serum inflammatory factors,such as interleukin-6(IL-6),interleukin-8(IL-8),and tumor necrosis factor-α(TNF-α),were measured both before and after ***:After treatment,both groups showed significant reductions in TCM syndrome scores(Psion:JGXZ can significantly improve clinical symptoms,regulate blood lipids,and protect liver function in patients with *** mechanism may be related to inhibiting inflammatory responses and regulating the balance of the oxidation-antioxidation system.

关键词： Jiangan Xiaozhi Formula non-alcoholic fatty liver disease oxidative stress response inflammatory factors

Argа-Bilig theory in traditional Mongolian medicine:a theoretical and practical perspective

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

History & Philosophy of Medicine 2024年第3期6卷 23-28页

作者： Tegele si Xue-Mei bao Ming-Hai Fu Xiu-Mei Wang Laxinamujila Bai NMPA Key Laboratory for Quality Control of Traditional Chinese Medicine(Mongolian Medicine) School of Mongolian MedicineInner Mongolia Minzu UniversityTongliao 028000China.

The concept of Arga and Bilig serves as a foundational principle in both ancient Mongolian philosophy and traditional Mongolian medicine (TMM). Arga, symbolized by brightness and associated with qualities of fire and activity, complements Bilig, symbolized by darkness and representing attributes of water and stillness. Together, these opposing forces permeate all aspects of existence, from the genesis of parenthood to the interplay of day and night. Understanding Arga-Bilig is crucial for diagnosing and treating diseases, as it illuminates the source of imbalance within the body. This review provides an overview of the significance of Arga-Bilig in Mongolian philosophy and its application in TMM, emphasizing the dynamic interplay of these opposing forces and their role in maintaining balance and harmony within the body.

关键词： traditional Mongolian medicine Arga and Bilig theory holistic dynamic interplay

中国式现代化新征程中经济高质量发展的战略重点与路径

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

经济问题 2024年第1期 1-9+17页

作者：司聪任保平西北大学经济管理学院北京高校中国特色社会主义理论研究协同创新中心(北京外国语大学) 南京大学数字经济与管理学院

高质量发展是全面建设社会主义现代化国家的首要任务。党的二十大首次提出要推动经济实现质的有效提升和量的合理增长，着重体现了质的内涵。以马克思主义现代化经济发展观剖析我国现代化新征程中的经济高质量发展，认为关键在于要提高... 详细信息

高质量发展是全面建设社会主义现代化国家的首要任务。党的二十大首次提出要推动经济实现质的有效提升和量的合理增长，着重体现了质的内涵。以马克思主义现代化经济发展观剖析我国现代化新征程中的经济高质量发展，认为关键在于要提高生产力质量，深化生产关系及生产方式改革，促进人的全面发展。根据现阶段国内外局势变化，我国亟须从新制定以数字科技催生经济高质量发展动力变革，以现代化经济体系推动经济高质量发展效率变革，以科技自立自强引领经济高质量发展质量变革，以绿色经济勃发经济高质量可持续发展的战略重点，将经济高质量发展系统化地置于中国式现代化的框架与进程中。为此，在现代化开局起步阶段必须通过发挥质量型经济的张力与韧性，加快形成高标准市场体系，系统制定高质量制度安排，踔厉建设现代化基础设施，全面深化金融体系改革，扎实促进人的全面发展，以此推动经济高质量发展，使我国大幅提升综合国力，如期实现全面建成社会主义现代化强国的目标。

关键词：高质量发展质量型经济现代化新征程

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

有关奇亏完全数的一些刻画

兰州理工大学学报 2024年第1期50卷 158-167页

作者：张四保喀什大学数学与统计学院新疆喀什844000 喀什大学现代数学及其应用研究中心新疆喀什844000

为探讨具有5个相异素因数的奇亏完全数的存在性问题,通过奇亏完全数的定义以及初等方法研究了具有5个相异素因数的奇正整数n是否是奇亏完全数的问题,给出3类具有5个相异素因数的奇正整数n不是奇亏完全数的几个结论.

关键词：亏完全数奇亏完全数存在性数论函数

Improving fatigue properties of normal direction ultrasonic vibration assisted face grinding Inconel 718 by regulating machined surface integrity

在线全文

学校读者我要写书评

暂无评论

International Journal of Extreme Manufacturing 2024年第3期6卷 458-475页

作者： Nianwei Xu Renke Kang Bi Zhang Yuan Zhang Chenxu Wang Yan bao Zhigang Dong State Key Laboratory of High-Performance Precision Manufacturing Dalian University of TechnologyDalian 116024People’s Republic of China Department of Mechanical and Energy Engineering Southern University of Science and TechnologyShenzhen 518055People’s Republic of China

Fatigue properties are crucial for critical aero-engine components in extreme serviceenvironments,which are significantly affected by surface integrity(si)indexes(especially surface topography,residual stressσ_(res),and microhardness)after machining ***-direction ultrasonic vibration-assisted face grinding(ND-UVAFG)has advantages in improving the machinability of Inconel 718,but there is a competitive relationship between higher compressiveσ_(res)and higher surface roughness R_(a)in affecting fatigue *** lack of a quantitative relationship between multiple si indexes and fatigue strength makes theindeterminacy of a regulatory strategy for improving fatigue *** this work,a model of fatigue strength(σ_f)_(sur)considering multiple si indexes was ***,high-cycle fatigue tests were carried out on Inconel 718 samples with different si characteristics,and the influence of ND-UVAFG process parameters on si was *** on si indexes data,the(σ_f)_(sur)distribution in the grinding surface layer for ND-UVAFG Inconel 718 samples was determined using the developed model,and then the fatigue crack initiation(FCI)sites were *** predicted FCI sites corresponded well with the experimental results,therebyverifying this model.A strategy for improving the fatigue life was proposed in this work,which was to transfer the fatigue source from the machined surface to the bulk material by controlling the si ***,a critical condition of si indexes that FCI sites appeared on the surface or in bulk material was given by fitting the predicted *** to the critical condition,an si field where FCI sites appeared in the bulk material could be *** this field,thefatigue life of Inconel 718 samples could be improved by approximately 140%.

关键词： surface integrity fatigue strength Inconel 718 ultrasonic assisted grinding

Multi-physical fields distribution in billet during helical electromagnetic stirring:A numerical simulation research

在线全文

学校读者我要写书评

暂无评论

China Foundry 2024年第1期21卷 51-59页

作者： Dong Pan Qing-tao Guo Kai-lun Zhang Fu-zhi Yu Yu-ying Li Yu-bao Xiao State Key Laboratory of Metal Materials for Marine Equipment and Application Anshan 114009LiaoningChina Ansteel Beijing Research Institute Co. Ltd.Beijing 102200China

Electromagnetic stirring is one of the widely applied techniques to modify the quality of casting *** from conventional rotate stirring,the helical stirring is more professional in assisting multi-dimensional flow of molten metal and eliminating solidification *** this study,the single-winding helical stirring(SWHS)was introduced,offering advantages such as smaller volume and lower electromagnetic shielding compared to traditional helical stirring *** a comprehensive numerical simulation,the stirring parameters of SWHS were adjusted to yoke inclination angle of 43°and frequency of 12 *** higher electromagnetic force and flow velocity in drawing direction,as well as the lower temperature gradient induced by the SWHS,are positive factors for homogeneous solidification of *** experimental results on Al-8%si alloy and 0.4%C-1.1%Mn steel demonstrate that compared to rotate stirring,the SWHS process can induce better billet quality and is more effective in accelerating the equiaxed expansion and reducing element *** SWHS process can enhance the equiaxed ratio of the billet by 58.3%and reduce segregation degree of carbon element by 10.97%.Consequently,SWHS holds great promise as a potential approach for improving the quality of continuous casting billets.

关键词： billet electromagnetic stirring helical solidification element segregation numerical simulation

基于普通顾客公平偏好的非垄断系统服务机制与定价研究

在线全文

学校读者我要写书评

暂无评论

中国管理科学 2024年第2期32卷 141-151页

作者：马宝妹刘思峰刘健南京航空航天大学经济管理学院江苏南京211106 南京理工大学经济管理学院江苏南京210094

由于顾客单位等待时间成本的不同,服务提供商通常提供普通队列和优先权队列的分类服务,让顾客在两个队列中进行选择。为了给予优先权顾客更短的等待时间,普通顾客的等待时间会延长,这也会导致不同队列顾客的服务价值差异,进而引发普通... 详细信息

由于顾客单位等待时间成本的不同,服务提供商通常提供普通队列和优先权队列的分类服务,让顾客在两个队列中进行选择。为了给予优先权顾客更短的等待时间,普通顾客的等待时间会延长,这也会导致不同队列顾客的服务价值差异,进而引发普通顾客不公平感。普通顾客的不公平感知会影响他们在排队系统中的行为,并对服务提供商的收益产生影响。本文以非抢占式M/M/1非垄断排队系统为背景,将普通顾客对不公平的感知建模为心理负效用,该负效用与两个队列的预期等待时间差值成正比。从企业收益最大化视角研究了顾客分类和定价的最优策略。研究结果表明,考虑到顾客对排队系统的公平感知,当普通顾客价值较低时,企业应采取可观测的分类服务,随着顾客公平偏好的增加,所有顾客都应进入优先权队列;当普通顾客价值较高时,服务提供商应取消顾客分类服务费用,仅保留一个队列或采取非可观测的分类服务。本文研究确定了在哪些条件下,普通顾客的公平感知会进一步增加或减少服务提供商的收益,为企业制定合理的服务定价策略提供了重要的价值。

关键词：服务运作排队论非垄断服务系统异质性公平偏好收益管理