检索结果-南通市图书馆

Effect of preload forces on multidimensional signal dynamic behaviours for battery early safety warning

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2024年第5期92卷 484-498页

作者： Kuijie Li Jiahua Li Xinlei Gao Yao lu Depeng Wang Weixin Zhang Weixiong Wu Xuebing Han Yuan-cheng Cao Languang lu Jinyu Wen {2. Cheng Minggao Ouyang School of Electrical and Electronic Engineering Huazhong University of Science and TechnologyWuhan 430074HubeiChina State Key Laboratory of Automotive Safety and Energy Tsinghua UniversityBeijing 100084China Energy and Electricity research Center Jinan UniversityZhuhai 519070GuangdongChina department of Mechanical Engineering Imperial College LondonLondon.SW7:2AZ.UK

Providing early safety warning for batteries in real-world applications is *** this study,comprehensive thermal abuse experiments are conducted to clarify the multidimensional signal evolution of battery failure under various preload *** time-sequence relationship among expansion force,voltage,and temperature during thermal abuse under five categorised stages is *** characteristic peaks are identified for the expansion force,which correspond to venting,internal short-circuiting,and thermal *** particular,an abnormal expansion force signal can be detected at temperatures as low as 42.4°C,followed by battery thermal runaway in approximately 6.5 ***,reducing the preload force can improve the effectiveness of the early-warning method via the expansion ***,reducing the preload force from 6000 to 1000 N prolongs the warning time(i.e.,2.7 to 398 s)before thermal runaway is *** on the results,a notable expansion force early-warning method is proposed that can successfully enable early safety warning approximately 375 s ahead of battery thermal runaway and effectively prevent failure propagation with module *** study provides a practical reference for the development of timely and accurate early-warning strategies as well as guidance for the design of safer battery systems.

关键词： Lithium-ion battery Thermal runaway Preload force Expansionforce Early warning Multidimensional signal

Enones from aldehydes and alkenes by carbene-catalyzed dehydrogenative couplings

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2024年第9期35卷 150-154页

作者： Kun Tang Fen Su shijie Pan Fengfei lu Zhongfu luo Fengrui Che Xingxing Wu Yonggui robin Chi National Key Laboratory of Green Pesticide Key Laboratory of Green Pesticide and Agricultural BioengineeringMinistry of EducationGuizhou UniversityHuaxi DistrictGuiyang 550025China School of chemistry Chemical Engineeringand BiotechnologyNanyang Technological UniversitySingapore 637371Singapore

Enones are widely explored in synthetic chemistry as fundamental building blocks for a wide range of reactions and exhibit intriguing biological activities that are pivotal for drug *** development of synthetic strategies for highly efficient preparation of enones thereby receives intense attention,in particular through the transition metal-catalyzed coupling ***,we describe a carbene-catalyzed cross dehydrogenative coupling(CDC)reaction that enables effective assembly of simple aldehydes and alkenes to afford a diverse set of enone ***,the in situ generated aryl radical is pivotal to“activate”the alkene by forming an allyl radical through intermolecular hydrogen atom transfer(HAT)pathway and thus forging the carbon-carbon bond formation with aldehyde as the acyl ***,our method represents the first example on the enone synthesis through coupling of“non-functionalized”aldehydes and alkenes as coupling partners,and offers a distinct organocatalytic pathway to the transition metal-catalyzed coupling transformations.

关键词： Enones Cross dehydrogenative coupling N-Heterocyclic carbene Aryl radical Hydrogen atom transfer

New roles of research data infrastructure in research paradigm evolution

在线全文

学校读者我要写书评

暂无评论

Journal of Data and Information Science 2024年第2期9卷 104-119页

作者： Yizhan Li lu Dong Xiaoxiao Fan ren Wei shijie Guo Wenzhen Ma Zexia Li National Library Science Chinese Academy of SciencesBeijing 100190China department of Information resources Management School of Economics and ManagementUniversity of Chinese Academy of SciencesBeijing100190China Bureau of Facility Support and Budget Chinese Academy of SciencesBeijing 100864China

research data infrastructures form the cornerstone in both cyber and physical spaces,driving the progression of the data-intensive scientific research *** opinion paper presents an overview of global research data infrastructure,drawing insights from national roadmaps and strategic documents related to research data *** emphasizes the pivotal role of research data infrastructures by delineating four new missions aimed at positioning them at the core of the current scientific research and communication *** four new missions of research data infrastructures are:(1)as a pioneer,to transcend the disciplinary border and address complex,cutting-edge scientific and social challenges with problem-and data-oriented insights;(2.as an architect,to establish a digital,intelligent,flexible research and knowledge services environment;(3)as a platform,to foster the high-end academic communication;(4)as a coordinator,to balance scientific openness with ethics needs.

关键词： research data infrastructure Landscape Data-centric Problem-oriented

New possibility for PET plastic recycling by a tailored hydrolytic enzyme

在线全文

学校读者我要写书评

暂无评论

Green Energy & Environment 2024年第2期9卷 163-165页

作者： shijie Yu Qinghai Li Yanguo Zhang Hui Zhou Key Laboratory for Thermal Science and Power Engineering of Ministry of Education Beijing Key Laboratory of CO_(2)Utilization and Reduction TechnologyDepartment of Energy and Power EngineeringTsinghua UniversityBeijing 100084China

Plastic waste puts a huge burden on the ecosystem due to the current lack of mature recycling ***(ethylene terephthalate)(PET)is one of the most produced plastics in the *** decomposition holds the promise of recovering monomers from PET plastic,and the monomers can be used to regenerate new PET ***,there are still limitations in the activity and thermal stability of the existing PET *** recent study by {2. et *** a novel PET hydrolase via machine learning-aided *** obtained PET hydrolase showed excellent activity and thermal stability in the hydrolysis of PET and is capable of directly degrading large amounts of postconsumer PET *** approach provides an effective method for recycling PET waste and is expected to improve the current state of plastic pol{2.tion worldwide.

关键词： Plastic waste Poly(ethylene terephthalate) Hydrolysis Machine learning Enzymatic depolymerization Hydrolases

Normality Preserving Multiplication Operators

在线全文

学校读者我要写书评

暂无评论

Acta Mathematica Sinica,English Series 1995年第4期11卷 389-398页

作者： shijie lu {2. lu department of mathematics Zhejiang University Hangzhou China

We show that a multiplication operator Φ(T)=ATB is normality preserving if and only if it is hyponormality preserving,if and only if it is either of the form A=f(?)g,B=h(?)f, or A=D,B=λD~* for some λ∈C and D E B(H) with D~*D=*** we show that Φ is(semi-) Fredholmness prserving if and only if A and B are(semi-)Fredholm operators.

关键词： Multiplication operators Normality preserving Fredholmness preserving

On Finite rank Operators in CSL Algebras Ⅱ

在线全文

学校读者我要写书评

暂无评论

Acta Mathematica Sinica,English Series 1997年第3期13卷 321-326页

作者： lu shijie ({2. of mathematics,Zhejiang univ.r.ity,Hangzhou 31002.,china)

For finite rank operators in a commutative subspace lattice algebra alg(?)we introduce the concept of correlation matrices,basing on which we prove that a finite rank operator in alg(?)can be written as a finite sum of rank-one operators in alg(?),if it has only finitely many different correlation *** we can recapture the results of ***,*** and *** as corollaries of our theorems.

关键词： CSL algebras Finite rank operators Correlation matrices

在线全文

学校读者我要写书评

暂无评论

肝移植患者报告结局测量工具的研究进展

中国实用护理杂志 2024年第1期40卷 64-71页

作者：吴静韵王华芬卢芳燕郑力浙江大学医学院附属第一医院护理部杭州310003 浙江大学医学院附属第一医院肝胆胰外科杭州310003

选择高质量的肝移植患者报告结局测量工具可从患者角度充分评估其健康状况,有助于护理人员发现患者报告的健康问题,并对此开展针对性的护理干预。笔者对国内外肝移植患者报告结局测量工具的研究现状进行综述,包括肝移植患者报告结局普... 详细信息

选择高质量的肝移植患者报告结局测量工具可从患者角度充分评估其健康状况,有助于护理人员发现患者报告的健康问题,并对此开展针对性的护理干预。笔者对国内外肝移植患者报告结局测量工具的研究现状进行综述,包括肝移植患者报告结局普适性与特异性测量工具的内容、特点、不足之处及推荐使用情景等方面展开分析,以期为肝移植患者报告结局的测量工具选择、肝移植患者的症状管理及相关护理决策提供参考。

关键词：综述肝移植患者报告结局测量工具

ESTIMATE FOr DISTANCE-COEFFICIENT OF MATrICES

在线全文

学校读者我要写书评

暂无评论

Applied mathematics(A Journal of Chinese universities) 1997年第4期12卷 441-446页

作者： lu fangyan department of mathematics Zhejiang University Hangzhou

Motivation of this paper is an open problem exposed by B. Beauzamy .Let M be a 3×3 matrix and d(M) is the distance to the diagonal algebra. Let α(M)= sup {‖P ⊥MP‖∶P is a projection in the diagonal algebra} and then call K(M)=d(Μ)α(M) the distance coefficient of M. The following results are obtained: (1) If M has two zero entries apart from its diagonal, then K(M)32.; (2. If M has one zero entry apart from its diagonal, then K(M)4132. (3) If M is arbitrary, then K(M)32.

关键词： Matrix distance coefficient

多模态感知技术在患者心理痛苦管理中的应用进展

在线全文

学校读者我要写书评

暂无评论

中国护理管理 2024年第9期24卷 1390-1393页

作者：成荫郑力丁淑怡卢芳燕王华芬浙江大学医学院附属第一医院护理部杭州市310003 浙江大学医学院附属第一医院骨髓移植中心杭州市310003 浙江大学医学院附属第一医院数理心理健康浙江省工程研究中心杭州市310003

心理痛苦严重危害个体的精神健康和生命安全,成为肿瘤护理学和心理学领域亟待解决的重要课题。多模态感知技术通过多模态信息进行人机交互,有效地帮助计算机识别和预测个体的心理问题。文章从多模态感知技术在心理痛苦的辅助识别、辅助... 详细信息

心理痛苦严重危害个体的精神健康和生命安全,成为肿瘤护理学和心理学领域亟待解决的重要课题。多模态感知技术通过多模态信息进行人机交互,有效地帮助计算机识别和预测个体的心理问题。文章从多模态感知技术在心理痛苦的辅助识别、辅助预测和辅助干预等方面的应用现状以及在心理痛苦管理中的不足和建议进行综述,以期为推进多模态感知技术在护理工作中的智能化运用提供思路和方向。

关键词：多模态感知技术心理痛苦管理综述