检索结果-南通市图书馆

Vibration safety assessment and parameter analysis of buried oil pipelines based on vibration isolation holes under strong surface impact

引用

Earthquake Engineering and Engineering Vibration 2025年第1期24卷 69-82页

作者： wang Guobo Mei Hua wang Jianning He wei Yin Yao Zhai Yuxin Zuo Pengfei College of Civil Engineering and Architecture Wenzhou UniversityWenzhou 325035China Zhejiang Engineering Research Center of Disaster Prevention and Mitigation for Coastal Soft Soil Foundation WenZhou 325035China China National Machinery Industry Co. Ltd.Beijing 100080China Faculty of Engineering China University of GeosciencesWuhan 430074China China Railway Construction Group Co. Ltd.Beijing 100072China School of Civil Engineering and Architecture Wuhan University of TechnologyWuhan 430070China

Strong surface impact will produce strong vibration,which will pose a threat to the safety of nearby buried pipelines and other important lifeline *** on the verified numerical method,a comprehensive numerical parameter analysis is conducted on the key influencing factors of the vibration isolation hole(VIH),which include hole diameter,hole net spacing,hole depth,hole number,hole arrangement,and soil *** results indicate that a smaller ratio of net spacing to hole diameter,the deeper the hole,the multi-row hole,the hole adoption of staggered arrangements,and better site soil conditions can enhance the efficiency of the VIH *** average maximum vibration reduction efficiency within the vibration isolation area can reach 42.2%.The vibration safety of adjacent oil pipelines during a dynamic compaction projection was evaluated according to existing standards,and the measurement of the VIH was recommended to reduce excessive *** single-row vibration isolation scheme and three-row staggered arrangement with the same hole parameters are suggested according to different *** research findings can serve as a reference for the vibration safety analysis,assessment,and control of adjacent underground facilities under the influence of strong surface impact loads.

关键词： vibration isolation hole buried oil pipeline strong surface impact vibration velocity vibration safety assessment

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

Iron-nitrogen-doped porous carbon absorbers constructed from hypercrosslinked ferrocene polymers for efficient electromagnetic wave absorption

引用

International Journal of Minerals,Metallurgy and Materials 2025年第3期32卷 578-590页

作者： Yi Hu Yijia Zhou Lijia Liu Qiang wang Chunhong Zhang Hao wei Yudan wang Key Laboratory of Superlight Materials&Surface Technology of Ministry of Education College of Materials Science and Chemical EngineeringHarbin Engineering UniversityHarbin 150001China Yantai Research Institute of Harbin Engineering University Yantai 264006China Qingdao Innovation and Development Base of Harbin Engineering University Qingdao 266404China

Herein,an external crosslinker facilitated the hypercrosslinking of ferrocene and a nitrogen heterocyclic compound(either melamine or imidazole)through a direct Friedel-Crafts reaction,which led to the formation of nitrogen-containing hypercrosslinked fer-rocene polymer precursors(HCP-FCs).Subsequent carbonization of these precursors results in the production of iron-nitrogen-doped por-ous carbon absorbers(Fe-NPCs).The Fe-NPCs demonstrate a porous structure comprising aggregated nanotubes and *** porosity of this structure can be modulated by adjusting the iron and nitrogen contents to optimize impedance *** uniform dis-tribution of Fe-N_(x)C,N dipoles,andα-Fe within the carbon matrix can be ensured by using hypercrosslinked ferrocenes in constructing porous carbon,providing the absorber with numerous polarization sites and a conductive *** electromagnetic wave absorption performance of the specially designed Fe-NPC-M_(2)absorbers is satisfactory,revealing a minimum reflection loss of-55.3 dB at 2.5 mm and an effective absorption bandwidth of 6.00 GHz at 2.0 *** utilizing hypercrosslinked polymers(HCPs)as precursors,a novel method for developing highly efficient carbon-based absorbing agents is introduced in this research.

关键词： hypercrosslinked polymers porous carbon iron-nitrogen doping annealing

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 modification of fabrics using dielectric barrier discharge plasma for improved antifouling performance

引用

Plasma Science and Technology 2025年第1期27卷 7-16页

作者： Jian SHEN Fajun wang wei wei Jie MA Junjie wang Liangliang LIN School of Materials and Chemical Engineering Ningbo University of TechnologyNingbo 315211People’s Republic of China Key Laboratory of Synthetic and Biological Colloids Ministry of EducationSchool of Chemical and Material EngineeringJiangnan UniversityWuxi 214122People’s Republic of China Mount Taishan Institute of Science and Technology Tai’an 271000People’s Republic of China

Surface modification of fabrics is an effective way to endow them with antifouling properties while still maintaining their key advantages such as comfort,softness and ***,an atmospheric pressure dielectric barrier discharge(DBD)plasma method is demonstrated for the processing of silk fabrics using 1H,1H,2H,2H-perfluorodecyltriethoxysilane(PFDS)as the *** results showed the successful grafting of PFDS groups onto the surface of silk fabrics without causing ***,the gas temperature is rather low during the whole processing procedure,suggesting the non-equilibrium characteristics of DBD *** influence on fabrics of the processing parameters(PFDS concentration,plasma treatment time and plasma discharge power)was systematically *** optimum processing condition was determined to be a PFDS concentration of 8wt%,a plasma processing time of 40 s and a plasma power of 11.87 ***,with prolonged plasma processing time or enhanced plasma power,the plasma-grafted PFDS films could be *** study revealed that plasma processing of silk fabrics with PFDS would lead to a change in their chemical composition and surface *** a result,the surface energy of the fabrics was reduced,accompanied by improved water and oil repellency as well as enhanced antifouling ***,the plasma-grafted PFDS films also had good durability and *** extending the method to polyester and wool against different oil-/water-based stains,the DBD plasma surface modification technique demonstrated good versatility in improving the antifouling properties of *** work provides guidance for the surface modification of fabrics using DBD plasma to confer them with desirable functionalities.

关键词： DBD plasma plasma surface modification silk fabrics water and oil repellency antifouling property

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 novel transient strategy:transient electronics based on energetic materials

引用

Defence Technology(防务技术) 2025年第2期44卷 111-130页

作者： Yutao wang Zhongliang Ma wei He Yongli Zhang Peijin Liu School of Environmental and Safety Engineering North University of ChinaTaiyuan 030051China School of Aeronautics and Astronautics Sichuan UniversityChengdu 610065China Xi'an North Hui'an Chemical Industry Co.Ltd Xi'an 710302China Science and Technology on Combustion Internal Flow and Thermostructure LaboratoryNorthwestern Polytechnical UniversityXi'an 710072China

Transient electronics is a versatile tool that finds applications in various fields,including medical biology,environmental protection,and data information *** the context of data protection,the traditional passive degradation transient mode is being replaced by the active destruction mode,which features a short self-destruction time and provides greater resistance to *** article presents an overview of recent progress in transient electronics,assessing the benefits and suitability of varying transient *** article also analyses the influence of transient electronics on military security while emphasizing the advantages of implementing energetic ***,the article introduces energetic transient devices and evaluates their ability to support the autonomous operation of transient electronic devices.

关键词： Transient electronics Energetic materials

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

Software-defined process-near-memory architecture using 3D hybrid bonding integration

引用

Science China(Information Sciences) 2025年第1期68卷 366-378页

作者： Anlin XU Chenchen DENG Jianfeng ZHU Yao wang Shaojun wei Leibo LIU School of Integrated Circuits Tsinghua University Beijing Institution of Tracking and Communication Technology Beijing National Research Center for Information Science and Technology Tsinghua University

With the unprecedented explosive growing amount of global data, the development of computing chips, which encounter bottlenecks such as power wall and memory wall, cannot satisfy the demanding requirement. This work proposes a software-defined process-near-memory(SDPNM) computing architecture implemented using 3D hybrid bonding *** software-defined chip architecture, featuring spatial computations and dynamic reconfiguration, innovates in a top-down manner to achieve high energy efficiency while maintaining flexibility after fabrication. The process-near-memory integration further advances the SDNPM chip in a bottom-up way to reduce the energy consumption of data movement while improving the bandwidth. Utilizing a relatively mature fabrication and bonding process can result in feasible solutions for both data-intensive and compute-intensive applications including digital signal processing and artificial intelligence. The logic die is fabricated in the SMIC 40 nm process and the DRAM die is fabricated in the PSMC 25 nm process. The hybrid bonding is implemented by XMC. The experimental results show that the energy efficiency of the proposed SDPNM chip is 33.1× better than the state-of-the-art FPGA ranging from 8.2× to 104.1×.

关键词： software-defined chips process near memory energy efficiency dynamic reconfiguration domain specific

来源：

同方期刊数据库

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 new multi-DOF envelope forming process for fabricating spiral bevel gears with back taper tooth

引用

Chinese Journal of Aeronautics 2025年第1期38卷 568-585页

作者： Xinghui HAN Yanhui wang Lin HUA Wuhao ZHUANG Fangyan ZHENG wei FENG Hubei Key Laboratory of Advanced Technology for Automotive Components Wuhan University of TechnologyWuhan 430070China Hubei Longzhong Laboratory Xiangyang 441000China

Spiral bevel gears are critical transmission components,and are widely used in the aerospace *** paper proposes a new multi-DOF envelope forming process for fabricating spiral bevel ***,the multi-DOF envelope forming principle of spiral bevel gears is ***,the design methods for the envelope tool geometry and movement are proposed based on the envelope geometry and movement ***,the metal flow and tooth filling laws are revealed through 3D FE simulation of the multi-DOF envelope forming process of a typical spiral bevel ***,a new method for separating the envelope tool and the formed spiral bevel gear with back taper tooth is proposed to avoid their ***,experiments on multi-DOF envelope forming of this typical spiral bevel gear are conducted using new heavy load multi-DOF envelope forming *** simulation and experimental results show the feasibility of the proposed multi-DOF envelope forming process for fabricating spiral bevel gears with back taper tooth and the corresponding process design methods.

关键词： Multi-DOF envelope forming Spiral bevel gear Back taper tooth Metal flow Process design

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

Ingenious construction of a magnetic-recyclable photo-Fenton catalyst ZnFe_(2)O_(4)@MIL-88A(Fe)and its adsorption-degradation activity toward levofloxacin

引用

Journal of Environmental Sciences 2025年第5期151卷 677-691页

作者： Xichen Mi Tingwei wang Yitong Chen Dan Cao Na Ma wei Dai Key Laboratory of the Ministry of Education for Advanced Catalysis Materials College of Chemistry and Materials ScienceZhejiang Normal UniversityJinhua 321004China Jinhua Customs Comprehensive Technology Service Center Jinhua 321004China College of Geography and Environmental Sciences Zhejiang Normal UniversityJinhua 321004China

Monotonic pore size and particles inseparability of metal-organic frameworks(MOFs)caused serious effects on its light absorption ability and charge separation,restricting its application for antibiotic such as levofloxacin(LEV)degradation in *** this study,a magnetically detachable nano-photocatalyst(ZnFe_(2)O_(4)@MIL-88A(Fe))was synthesized using a simple two-step hydrothermal *** morphology and microstructure analyses showed that n-type ZnFe_(2)O_(4)catalyst particleswere efficiently assembled onto the surface of MIL-88A(Fe)*** activity studies indicated that the ZnFe_(2)O_(4)@MIL-88A(Fe)plus H_(2)O_(2)exhibiting a significantly boosted photo-Fenton activity toward LEV at visible light irradiation,compared to the pure ZnFe_(2)O_(4)and MIL-88A(Fe),the degradation efficiency accordingly reached up to nearly 82%and 25%within 60 *** excellent photocatalytic performance was ascribed to the synergistic effects of the heterogeneous structure of ZnFe_(2)O_(4)and MIL-88A(Fe),whereby the efficient separation of charge carriers in the catalytic system is mutually reinforced with the efficient reduction of Fe^(3+)and Fe^(2+).Meanwhile,the degradationmechanism and intermediates of LEV during the photo-Fenton reaction process were also studied in depth through free radical burst,electron paramagnetic resonance,and mass spectrometry analyses,***,the ZnFe_(2)O_(4)@MIL-88A(Fe)composite catalyst displayed significant stability and ease of separation,indicating potential for the photooxidative degradation of organic pollutants.

关键词： ZnFe_(2)O_(4) MIL-88A(Fe) Magnetism Photo-Fenton Levofloxacin

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

Hausdorff Measure of Space Anisotropic Gaussian Processes with Non-stationary Increments

引用

Acta Mathematicae Applicatae Sinica 2025年第1期41卷 114-132页

作者： Jun wang Zhen-long CHEN wei-jie YUAN Guang-jun SHEN School of Mathematics and Physics Anhui Polytechnic UniversityWuhu 241000China School of Statistics and Mathematics Zhejiang Gongshang UniversityHangzhou 310018China Department of Mathematics Anhui Normal UniversityWuhu 241000China

Let X={X(t),t∈R+} be a centered space anisotropic Gaussian process values in R^(d) with non-stationary increments,whose components are independent but may not be identically *** certain conditions,then almost surely c_(1)≤ϕ-m(X([0,1]))≤c_(2),where ϕ denotes the exact Hausdorff measure associated with function ϕ(s)=s1/α_(k)+Σ_(i=1)k(1-αi/αk)log log 1/s for some 1≤k≤d,(α_(1),…,α_(d))∈(0,1]^(d).We also obtain the exact Hausdorff measure of the graph of X on[0,1].

关键词： Hausdorff measure self-similar Gaussian processes non-stationary increment Lamperti theorem

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

Metabolic dysfunction-associated steatotic liver disease and type 2 diabetes:A dual threat to cardiac dysfunction progression

引用

World Journal of Cardiology 2025年第1期17卷 118-120页

作者： wei wang Charlie Cooper Chronic Disease and Health Management Research Center Geriatric Hospital of Nanjing Medical UniversityNanjing 210024Jiangsu ProvinceChina

Metabolic dysfunction-associated steatotic liver disease(MASLD),particularly in patients with type 2 diabetes mellitus(T2DM),is increasingly recognized as a multi-system disease that affects both hepatic and cardiovascular *** study explores the association between MASLD-related liver fibrosis and cardiac dysfunction,focusing on how liver fibrosis contributes to cardiac remodeling and *** et al’s research highlights the strong correlation between liver fibrosis and changes in left ventricular mass,left atrial dimensions,and systolic and diastolic function in diabetic ***,the study suggests a protective role of sex-hormone binding protein against cardiac *** findings underline the importance of early detection of liver fibrosis using noninvasive markers like fibrosis-4 index and nonalcoholic fatty liver disease fibrosis scores,which may offer dual protection for both liver and heart health in T2DM ***,this study calls for further research into the shared pathogenic mechanisms,including inflammation and fibrosis pathways,between the liver and *** advocates for the integration of liver fibrosis screening into cardiovascular risk management,urging clinicians to adopt a more holistic approach in treating patients with MASLD and *** research has broad implications for preventing cardiovascular complications and improving outcomes in this highrisk population.

关键词： Metabolic dysfunction-associated steatotic liver disease Type 2 diabetes Cardiac dysfunction Left ventricular mass Sex-hormone binding protein Fibrosis-4 index scores

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

Eigenvalue-Free Interval for Seidel Matrices of Cographs

引用

Journal of Mathematical Research with Applications 2025年第1期45卷 1-10页

作者： Heming NIU wei wang School of Mathematics Physics and Finance Anhui Polytechnic University

Abstract The distribution of Seidel eigenvalues of cographs is investigated in this *** prove that there is no Seidel eigenvalue of nontrivial cographs in the interval (-1,1).We also show the optimality of the interval (-1,1) in the sense that for any■>0 either of the intervals(1,1+■) and (-1-■,-1) contains a Seidel eigenvalue of some cograph of order n when n is sufficiently large.

关键词： cograph Seidel matrix eigenvalue-free interval

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

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：