期刊文献+
共找到3,138篇文章
< 1 2 157 >
每页显示 20 50 100
Synthesis of energetic materials by microfluidics
1
作者 Shuo Liu Chuanyu Zhang +1 位作者 Yanlan Wang Xueyong Wei 《Defence Technology(防务技术)》 2025年第2期306-319,共14页
Energetic materials,characterized by their capacity to store and release substantial energy,hold pivotal significance in some fields,particularly in defense applications.Microfluidics,with its ability to manipulate fl... Energetic materials,characterized by their capacity to store and release substantial energy,hold pivotal significance in some fields,particularly in defense applications.Microfluidics,with its ability to manipulate fluids and facilitate droplet formation at the microscale,enables precise control of chemical reactions.Recent scholarly endeavors have increasingly harnessed microfluidic reactors in the realm of energetic materials,yielding morphologically controllable particles with enhanced uniformity and explosive efficacy.However,crucial insights into microfluidic-based methodologies are dispersed across various publications,necessitating a systematic compilation.Accordingly,this review addresses this gap by concentrating on the synthesis of energetic materials through microfluidics.Specifically,the methods based on micro-mixing and droplets in the previous papers are summarized and the strategies to control the critical parameters within chemical reactions are discussed in detail.Then,the comparison in terms of advantages and disadvantages is attempted.As demonstrated in the last section regarding perspectives,challenges such as clogging,dead zones,and suboptimal production yields are non-ignoble in the promising fields and they might be addressed by integrating sound,optics,or electrical energy to meet heightened requirements.This comprehensive overview aims to consolidate and analyze the diverse array of microfluidic approaches in energetic material synthesis,offering valuable insights for future research directions. 展开更多
关键词 Microfluidic technology Energetic materials synthesis MICRO-MIXING Micro-droplets
在线阅读 下载PDF
Study on Semi-Continuous Technology System for Soft Material Stripping in Large Surface Mines 被引量:3
2
作者 王喜富 卢明银 +2 位作者 车兆学 张达贤 王忠强 《International Journal of Mining Science and Technology》 SCIE EI 2000年第1期36-40,共5页
Continuous and semi-continuous mining technology has become the main trend of modern surface mines in the world. According to the deposit characteristics of coal basin in China and Chinese situation,this paper discuss... Continuous and semi-continuous mining technology has become the main trend of modern surface mines in the world. According to the deposit characteristics of coal basin in China and Chinese situation,this paper discussed the new semi-continuous technology── shovel - transfer wagon-belt conveyor and its application prospect in large surface coal mines in China. 展开更多
关键词 SEMI-CONTINUOUS technology soft material STRIPPING shovel-transfer wagon-belt CONVEYOR
在线阅读 下载PDF
Development and application of ferrite materials for low temperature co-fired ceramic technology 被引量:5
3
作者 张怀武 李颉 +3 位作者 苏桦 周廷川 龙洋 郑宗良 《Chinese Physics B》 SCIE EI CAS CSCD 2013年第11期12-32,共21页
Development and application of ferrite materials for low temperature co-fired ceramic (LTCC) technology are dis- cussed, specifically addressing several typical ferrite materials such as M-type barium ferrite, NiCuZ... Development and application of ferrite materials for low temperature co-fired ceramic (LTCC) technology are dis- cussed, specifically addressing several typical ferrite materials such as M-type barium ferrite, NiCuZn ferrite, YIG ferrite, and lithium ferrite. In order to permit co-firing with a silver internal electrode in LTCC process, the sintering temperature of ferrite materials should be less than 950 ℃. These ferrite materials are research focuses and are applied in many ways in electronics. 展开更多
关键词 ferrite materials low temperature co-fired ceramic technology
在线阅读 下载PDF
Evaluation for Applied Materials of Eco-technology 被引量:2
4
作者 张俊斌 梁大庆 +1 位作者 陈洁音 翁韶良 《水土保持研究》 CSCD 北大核心 2005年第6期174-177,256,共5页
The eco-materials(include natural and artificial material) applied in the eco-technology in internal currently,usually lack of evaluation for applicative conditions.Hence,this study carry on the whole research and ide... The eco-materials(include natural and artificial material) applied in the eco-technology in internal currently,usually lack of evaluation for applicative conditions.Hence,this study carry on the whole research and identifications to draft the eco-materials of eco-technology.The evaluation models of applied materials for eco-technology were proposed.The quantitative score were obtained by expert’s person evaluation.Three models were proposed to quantify the effects of applied materials on the ecological environment.The statistical procedures were adopted to compare the performance of these materials for eco-technology.The results indicated that the comparison of applied materials can be treated by quantitative analysis.For the further analysis,more evaluated data from expert’s experience need to be collected then the bias of person subject can be reduced.In addition to reach the benefits in the respects of ecosystem,society,economy and function,also practice the comprehensive effects in eco-technology. 展开更多
关键词 中国 台湾省 生态系统 生态环境 生态建设 生态评价
在线阅读 下载PDF
Structural insights on anti-biofilm mechanism of heated slightly acidic electrolyzed water technology against multi-resistant Staphylococcus aureus biofilm on food contact surface
5
作者 Pianpian Yan Ramachandran Chelliah +7 位作者 Kyoung Hee Jo Xiuqin Chen Akanksha Tyagi Hyeon Yeong Jo Fazle Elahi Nam Chan Woo Min Seung Wook Deog Hwan Oh 《Food Science and Human Wellness》 SCIE CSCD 2024年第3期1556-1566,共11页
Slightly acidic electrolyzed water(SAEW)has proven to be an efficient and novel sanitizer in food and agriculture field.This study assessed the efficacy of SAEW(30 mg/L)at 40℃on the inactivation of foodbome pathogens... Slightly acidic electrolyzed water(SAEW)has proven to be an efficient and novel sanitizer in food and agriculture field.This study assessed the efficacy of SAEW(30 mg/L)at 40℃on the inactivation of foodbome pathogens and detachment of multi-resistant Staphylococcus aureus(MRSA)biofilm.Furthermore.the underlying mechanism of MRS A biofilm under heated SAEW at 40℃treatment on metabolic profiles was investigated.The results showed that the heated SAEW at 40℃significantly effectively against foodbome pathogens of 1.96-7.56(lg(CFU/g))reduction in pork,chicken,spinach,and lettuce.The heated SAEW at 40℃treatment significantly reduced MRS A biofilm cells by 2.41(lg(CFU/cm^(2))).The synergistic effect of SAEW treatment showed intense anti-biofilm activity in decreasing cell density and impairing biofilm cell membranes.Global metabolic response of MRSA biofilms,treated by SAEW at 40℃,revealed the alterations of intracellular metabolites,including amino acids,organic acid,fatty acid,and lipid.Moreover,signaling pathways involved in amino acid metabolism,energy metabolism,nucleotide synthesis,carbohydrate metabolites,and lipid biosynthesis were functionally disrupted by the SAEW at 40℃treatment.As per our knowledge,this is the first research to uncover the potential mechanism of heated SAEW treatment against MRSA biofilm on food contact surface. 展开更多
关键词 Multi-resistant Staphylococcus aureus Metabolic profile SAEW BIOFILM Hurdle technology Electrode material
在线阅读 下载PDF
A low-profile metamaterial absorber with ultrawideband reflectionless and wide-angular stability
6
作者 Feihong Lin Zhongming Yan +3 位作者 Ping Wang Yu Wang Hongcheng Zhou Haoran Lu 《Defence Technology(防务技术)》 SCIE EI CAS CSCD 2024年第4期258-268,共11页
An ultrawideband reflectionless metamaterial absorber(MA)is proposed by replacing the metallic ground with the complementary split-ring resonator(CSRR)structure.The proposed MA exhibits-10 d B reflectivity spectrum fr... An ultrawideband reflectionless metamaterial absorber(MA)is proposed by replacing the metallic ground with the complementary split-ring resonator(CSRR)structure.The proposed MA exhibits-10 d B reflectivity spectrum from 1 GHz to 20 GHz,which maintains more than 90%absorption from 1.5 GHz to20 GHz.Furthermore,it achieves angle stability for TE and TM polarization at oblique incident angles up to 40°and 65°,respectively.To achieve broadband absorption spectrum,we have adopted a single-layer high-impedance surface(HIS)loaded with a double-layer magnetic material(MM)structure.To further realize the RCS reduction into a lower frequency range,we have employed the scattering cancellation technology into the traditional metallic ground.Finally,we have fabricated a sample exhibiting the 10 d B RCS reduction from 1 GHz to 20 GHz with a thickness of 10 mm.Measurement and simulation results confirm that the proposed MA exhibits excellent comprehensive performance,making it suitable for many practical applications. 展开更多
关键词 Metamaterial absorber(MA) Magnetic material(MM) High-impedance surface(HIS) Scattering cancellation technology ULTRAWIDEBAND Wide-angular stable
在线阅读 下载PDF
Construction and Properties of Structure-and Size-controlled Micro/Nano-energetic Materials 被引量:20
7
作者 HUANG Bing CAO Minhua +2 位作者 NIE Fude HUANG Hui HU Changwen 《Defence Technology(防务技术)》 SCIE EI CAS 2013年第2期75-103,共29页
The recent research progress of structure- and size-controlled micro/nano-energetic materials is reviewed, which properties are fundamentally different from those of their corresponding bulk materials. The development... The recent research progress of structure- and size-controlled micro/nano-energetic materials is reviewed, which properties are fundamentally different from those of their corresponding bulk materials. The development of the construction strategies for achieving zero-dimensional (0D), one-dimensional (1D), two-dimensional (2D), and three-dimensional (3D) micro/nanostructures from energetic molecules is introduced. Also, an overview of the unique properties induced by micro/nanostructures and size effects is provided. Special emphasis is focused on the size-dependent properties that are different from those of the conventional micro-sized energetic materials, such as thermal decomposition, sensitivity, combustion and detonation, and compaction behaviors. A conclusion and our view of the future development of micro/nano-energetic materials and devices are given. 展开更多
关键词 applied chemistry STRUCTURE SIZE micro/nano-energetic materials construction technology PROPERTY
在线阅读 下载PDF
A review on lightweight materials for defence applications:Present and future developments 被引量:7
8
作者 Suchart Siengchin 《Defence Technology(防务技术)》 SCIE EI CAS CSCD 2023年第6期1-17,共17页
The defence sector is now at an advanced level,catering to the global scenario,and countries also invest heavily in research and development.Countries around the world have spent a lot of money on research and develop... The defence sector is now at an advanced level,catering to the global scenario,and countries also invest heavily in research and development.Countries around the world have spent a lot of money on research and development over the years in order to stay ahead of their competitors.Lightweight materials are critical in defence applications because they allow components to be lighter without sacrificing strength.This review provides an overview of the research related to defence applications.The book provides comprehensive details on current trends in the application of lightweight materials in defence.This review also includes historical and current perspectives on defence technologies.It discusses uses of lightweight materials such as metal matrix composites,polymer composites,ceramic matrix composites,fiber composites in defence sectors Finally,the review paper also emphasizes future military applications of lightweight materials. 展开更多
关键词 Lightweight materials DEFENCE technologIES DEVELOPMENTS APPLICATIONS
在线阅读 下载PDF
Toward practical photoelectrochemical water splitting and CO_(2) reduction using earth-abundant materials 被引量:3
9
作者 Yubin Chen Ya Liu +2 位作者 Feng Wang Xiangjiu Guan Liejin Guo 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2021年第10期469-488,I0013,共21页
Photoelectrochemical(PEC)fuel generation from water splitting and CO_(2)reduction(CO_(2)R)utilizing solar energy holds immense potential to solve the current energy and environmental issues.In the past decades,numerou... Photoelectrochemical(PEC)fuel generation from water splitting and CO_(2)reduction(CO_(2)R)utilizing solar energy holds immense potential to solve the current energy and environmental issues.In the past decades,numerous studies have been devoted to this fast-growing research field,and it is essential to develop efficient photoelectrodes with earth-abundant materials for the practical application of PEC systems.A thorough review of earth-abundant materials and associated devices for PEC fuel generation is beneficial to uncover the inherent obstacles and pave the way for future research.Herein,we summarize the recent progress of earth-abundant light-absorbers and cocatalysts in the PEC systems.The unbiased configurations and scaling-up strategies of PEC devices using earth-abundant materials are examined.A comparison between PEC water splitting and CO_(2)R is carried out to promote better understanding of the design principles for practical materials and devices.Last,the prospects on advanced materials,underlying mechanisms,and reaction systems of PEC water splitting and CO_(2)R are proposed. 展开更多
关键词 Solar energy Photoelectrochemical technology Water splitting CO_(2)reduction Earth-abundant materials
在线阅读 下载PDF
Numerical and experimental evaluation for density-related thermal insulation capability of entangled porous metallic wire material 被引量:1
10
作者 Tao Zhou Rong-zheng Fang +3 位作者 Di Jia Pei Yang Zhi-ying Ren Hong-bai Bai 《Defence Technology(防务技术)》 SCIE EI CAS CSCD 2023年第5期177-188,共12页
Entangled porous metallic wire material(EPMWM)has the potential as a thermal insulation material in defence and engineering.In order to optimize its thermophysical properties at the design stage,it is of great signifi... Entangled porous metallic wire material(EPMWM)has the potential as a thermal insulation material in defence and engineering.In order to optimize its thermophysical properties at the design stage,it is of great significance to reveal the thermal response mechanism of EPMWM based on its complex structural effects.In the present work,virtual manufacturing technology(VMT)was developed to restore the physics-based 3D model of EPMWM.On this basis,the transient thermal analysis is carried out to explore the contact-relevant thermal behavior of EPMWM,and then the spiral unit containing unique structural information are further extracted and counted.In particular,the thermal resistance network is numerically constructed based on the spiral unit through the thermoelectric analogy method to accurately predict the effective thermal conductivity(ETC)of EPMWM.Finally,the thermal diffusivity and specific heat of the samples were obtained by the laser thermal analyzer to calculate the ETC and thermal insulation factor of interest.The results show that the ETC of EPMWM increases with increasing temperature or reducing density under the experimental conditions.The numerical prediction is consistent with the experimental result and the average error is less than 4%. 展开更多
关键词 Entangled porous metallic wire material (EPMWM) Virtual manufacturing technology(VMT) Thermal resistance network Effective thermal conductivity(ETC) Thermal insulation factor
在线阅读 下载PDF
Composite materials for primary aircraft structures:from development phase to high volume production rate 被引量:4
11
作者 LI Helen FIORE Lucien JIANG Zhen 《民用飞机设计与研究》 2020年第1期125-128,共4页
From 1980’s decade,the introduction of carbon composite materials in structural applications has been consistently increased in the successive generations of civil aircraft from Single Aisle to Middle-long Range to a... From 1980’s decade,the introduction of carbon composite materials in structural applications has been consistently increased in the successive generations of civil aircraft from Single Aisle to Middle-long Range to achieve a culminant point with more than 50%in structure weight in recent commercial civil aircraft.This evolution,done through successive iterations,has been possible by combining in the same time the improvement of intrinsic composite material performances and its transformation into prepreg production technologies together with the development of new manufacturing process for material lay-up automation at composite shop-floor manufacturer of aircraft composite parts.New challenges are still coming to continuously develop materials and technologies in order to pursue the production more cost-effective composite parts.Associated to higher aircraft production rate for single aisle,new challenges may force material and aircraft designers and producers to furthermore drive new products and processes introduction and new ways of transformation within in next decade of composite aircraft designs.We propose to illustrate these trends using past and recent developments and our return of experience from Hexcel on Civil Aircraft programs. 展开更多
关键词 composite materials structural applications PREPREG technology automatic LAY-UP PROCESSES high production VOLUME rate
在线阅读 下载PDF
Experimental Investigation on Finishing Technology by Magnetostrictive Ultrasonic Vibration of Magnetic Liquid
12
作者 陈善飞 顾邦明 +1 位作者 王正才 王正良 《Defence Technology(防务技术)》 SCIE EI CAS 2010年第3期166-170,共5页
Magnetic liquid can produce alternative internal pressure under the alternative high-frequency gradient magnetic field.Because it has higher bulk modulus,the internal pressure results in its volume change.Using piezoe... Magnetic liquid can produce alternative internal pressure under the alternative high-frequency gradient magnetic field.Because it has higher bulk modulus,the internal pressure results in its volume change.Using piezoelectric transducers,the ultrasonic wave generated by the vibration of magnetic liquids can be detected,which shows that the magnetic liquids have the magnetostrictive effect and can generate the ultrasonic vibration under the alternative magnetic gradient field.Some nonmagnetic abrasives and rust-proofing agents can be mixed into the magnetic liquids,under the alternative magnetic field,the abrasives held by magnetic liquids grind the surface of the workpieces,and thus,the finishing for the surface with complex shape,mold cavity and inner wall of tiny tubes can be realized. 展开更多
关键词 materials synthesis and processing technology FINISHING magnetic liquid MAGNETOSTRICTIVE ultrasonic vibration
在线阅读 下载PDF
Advances in Application of New Catalytic Materials in Petroleum Refining and Petrochemicals Production
13
作者 He Yigong Lin Min +1 位作者 Mu Xuhong Shu Xingtian (SINOPEC Research Institute of Petroleum Processing, Beijing 100083) 《China Petroleum Processing & Petrochemical Technology》 SCIE CAS 2006年第1期1-5,共5页
This article introduces the solid acid catalyst for isobutene/butylenes alkylation, the HTS Ti/Si zeolite for ammonoxidation of cyclohexanone and the noncrystalline alloy catalyst and magnetically stabi- lized bed for... This article introduces the solid acid catalyst for isobutene/butylenes alkylation, the HTS Ti/Si zeolite for ammonoxidation of cyclohexanone and the noncrystalline alloy catalyst and magnetically stabi- lized bed for hydrofining of caprolactam that were developed recently by SINOPEC Research Institute of Petroleum Processing (RIPP). 展开更多
关键词 CATALYST material solid acid non-crystalline alloy magnetically stabilized bed technology
在线阅读 下载PDF
超距间隔织物及其复合材料应用研究进展
14
作者 赵颖 姜亚明 《针织工业》 北大核心 2025年第3期78-83,共6页
对目前国内外超距间隔织物及其复合材料的研究和应用进行综述。首先简要介绍传统间隔织物和超距间隔织物的结构特点,并结合研究现状着重对针织和梭织结构超距间隔织物的优缺点及研究方向进行概括。然后,在此基础上列举超距间隔织物复合... 对目前国内外超距间隔织物及其复合材料的研究和应用进行综述。首先简要介绍传统间隔织物和超距间隔织物的结构特点,并结合研究现状着重对针织和梭织结构超距间隔织物的优缺点及研究方向进行概括。然后,在此基础上列举超距间隔织物复合材料在家居、体育娱乐和交通建筑等领域的应用。最后,总结和展望了超距间隔织物复合材料在防护、保温、建筑和交通运输产业应用的优势,以期在更多领域深入扩大应用。 展开更多
关键词 间隔织物 超距 织造技术 复合材料 力学性能 发展趋势
在线阅读 下载PDF
适用于致密碎粉岩富水地层的高强丙烯酸盐注浆材料研发及渗透加固特性研究
15
作者 杨磊 宓祥云 +4 位作者 李召峰 屠文锋 谢云鹏 胡浩 王康 《岩土工程学报》 北大核心 2025年第3期525-534,共10页
针对富水致密软弱围岩致灾性强、常规注浆材料适用性弱的问题,开展了新型高强丙烯酸盐注浆材料研发,分析了其聚合反应机理及工作性能影响规律,研究了该新型材料对致密碎粉岩的渗透加固特性。基于有机-无机互穿网络方法,研发了高强丙烯... 针对富水致密软弱围岩致灾性强、常规注浆材料适用性弱的问题,开展了新型高强丙烯酸盐注浆材料研发,分析了其聚合反应机理及工作性能影响规律,研究了该新型材料对致密碎粉岩的渗透加固特性。基于有机-无机互穿网络方法,研发了高强丙烯酸盐注浆材料,由主剂、无机改性剂、引发剂、促进剂、交联剂等原料组成,具有高强、高渗的显著特点;高强丙烯酸盐材料两组分混合后聚合反应充分,无机网络结构均匀穿插于丙烯酸盐有机凝胶网络中;基于正交试验获得了不同组成的新型材料胶凝时间、凝胶体抗压强度及吸水膨胀率特征指标及组分影响规律,浆液胶凝时间范围为45~201 s,凝胶体单轴抗压强度范围为1.2~2.1 MPa、吸水膨胀率范围为16%~51%,并进一步阐明了新型材料主要工作性能的影响因素敏感性排序;基于室内试验及微观分析,研究了浆液在致密碎粉岩中的渗透加固特性,结果表明高强丙烯酸盐浆液与纯丙烯酸盐浆液的渗透扩散能力接近,远大于水泥浆液,且高强丙烯酸盐材料对碎粉岩颗粒起到明显的包裹强化作用,加固体强度达2.31 MPa,是纯丙烯酸盐材料加固强度的5.4~11.0倍,可为隧洞灾害注浆治理与安全掘进提供有力的安全保障。 展开更多
关键词 富水软弱围岩 碎粉岩 注浆材料 高强丙烯酸盐 有机-无机网络穿插技术 渗透加固
在线阅读 下载PDF
食品保鲜中的质量控制问题与对策研究
16
作者 王淑敏 《食品安全导刊》 2025年第7期68-70,共3页
为提升食品保鲜中的质量控制水平,保障食品的安全与品质,推动食品行业良好发展,本文分析了食品保鲜的重要性以及在保鲜技术应用、包装材料选用、环境因素控制和人员专业能力方面存在的质量控制问题,并提出选择合适的保鲜技术、研发环保... 为提升食品保鲜中的质量控制水平,保障食品的安全与品质,推动食品行业良好发展,本文分析了食品保鲜的重要性以及在保鲜技术应用、包装材料选用、环境因素控制和人员专业能力方面存在的质量控制问题,并提出选择合适的保鲜技术、研发环保包装材料、完善环境监测体系及进行人员专业培训的对策。 展开更多
关键词 食品保鲜 质量控制 保鲜技术 包装材料
在线阅读 下载PDF
高职英语新形态教材使用研究——学生视角下基于扩展技术接受模型的探索
17
作者 黄丹卉 《黑龙江生态工程职业学院学报》 2025年第1期153-160,共8页
收集江苏省高职院校学生的问卷数据,采用描述性统计和结构方程模型,对学生使用公共英语新形态教材的基本情况及其影响因素进行实证分析。结果显示:(1)高职学生普遍认为英语新形态教材具备良好的易用性和实用性,使用意向较高,但对其智能... 收集江苏省高职院校学生的问卷数据,采用描述性统计和结构方程模型,对学生使用公共英语新形态教材的基本情况及其影响因素进行实证分析。结果显示:(1)高职学生普遍认为英语新形态教材具备良好的易用性和实用性,使用意向较高,但对其智能化、交互性、个性化功能的使用不足。(2)感知易用性、感知有用性和英语学习动机显著影响学生使用新形态教材的行为意向,感知易用性显著影响感知有用性,教师学业支持对感知易用性和感知有用性有显著正向影响。基于调查结果,建议学生主动提升英语学习的内在动机;建议教师以学生为中心,提升教材使用理念和能力;建议教材开发者加强新形态教材的数智特征,促进课程设计与教材建设的有机融合。 展开更多
关键词 新形态教材 高职英语 技术接受模型 教师支持 英语学习动机
在线阅读 下载PDF
锂电池百篇论文点评(2024.10.1—2024.11.30)
18
作者 郝峻丰 岑官骏 +12 位作者 乔荣涵 朱璟 孙蔷馥 张新新 田孟羽 金周 詹元杰 闫勇 贲留斌 俞海龙 刘燕燕 周洪 黄学杰 《储能科学与技术》 北大核心 2025年第1期388-405,共18页
本文是一篇近两个月的锂电池文献评述,以“lithium”和“batter”为关键词检索了Web of Science从2024年10月1日至2024年11月30日上线的锂电池研究论文,共有6602篇,选择其中100篇加以评论。正极材料方面主要研究了高镍三元的包覆和掺杂... 本文是一篇近两个月的锂电池文献评述,以“lithium”和“batter”为关键词检索了Web of Science从2024年10月1日至2024年11月30日上线的锂电池研究论文,共有6602篇,选择其中100篇加以评论。正极材料方面主要研究了高镍三元的包覆和掺杂改性,以及其在高电压下所发生的表面和体相的结构演变。合金化储锂负极材料的研究侧重于复合电极结构设计和各类黏结剂的开发,以缓解循环过程中负极材料的体积变化,维持电极完整性。固态电解质的研究主要包括对现有固态电解质的合成、掺杂、结构设计、稳定性和相关性能研究以及对新型固态电解质的探索。其他电解液和添加剂的研究则主要包括不同电解质和溶剂对各类电池材料体系适配的研究,以及对新的功能性添加剂的探索。固态电池方向更多关注于复合正极设计、界面改性和影响锂枝晶生长的因素,同时出现了更多关于固态锂硫电池的研究论文。关于电池产热和气体成分、失效机制、热失控、界面稳定性的电池模型、表征和分析论文也有多篇。理论模拟工作多是关于无机固体电解质中离子输运的研究。 展开更多
关键词 锂电池 正极材料 负极材料 电解质 电池技术
在线阅读 下载PDF
中国立井冻结井壁技术的发展与展望
19
作者 杨维好 黄书翔 +8 位作者 王衍森 李伟 杨志江 任彦龙 韩涛 张驰 张涛 骆汀汀 张雨 《煤炭学报》 北大核心 2025年第1期92-114,共23页
分析了“深部化”和“大型化”趋势对中国深井井筒的设计、施工与运维带来的严峻挑战。总结经验教训,指出冻结法是复杂条件下深井井筒施工最主要的地层堵水与加固工法。回顾了2002年以前国内外冻结井壁技术的状况。概述了2002年以来我国... 分析了“深部化”和“大型化”趋势对中国深井井筒的设计、施工与运维带来的严峻挑战。总结经验教训,指出冻结法是复杂条件下深井井筒施工最主要的地层堵水与加固工法。回顾了2002年以前国内外冻结井壁技术的状况。概述了2002年以来我国在400~800 m深厚土层中和在500~1000 m深厚富水岩层中冻结井壁技术取得的重大突破及其应用情况,包括:冻结井筒C60~C100、CF80~CF110高承载力混凝土井壁设计与施工技术,深厚土层中冻结井壁破裂灾害防治技术,深厚富水岩层中低渗漏单层井壁技术等。针对2002年以来中国冻结井壁技术的发展,总结了井壁材料的进步;介绍了横截面、纵剖面井壁结构的发展;归纳了对土层的初始水平水土压力、内层井壁承受的水压、冻结压力、富水岩层中孔隙水引起的井壁水力荷载、井壁竖直附加力等的新认识;简述了井壁力学模型,高径向承载力井壁和内层可缩井壁的力学特性,双层复合井壁之内、外壁厚度的设计理论,含水岩层中单层井壁厚度的设计理论和内层可缩井壁的设计理论等的新进展;介绍了大厚度井壁裂漏机理及防裂技术、井壁腐蚀破坏及防治技术、信息化施工技术,以及内层可缩井壁和低渗漏单层井壁的施工工艺。针对我国在1500 m超深土层中以及3000 m深厚富水岩层中冻结井壁技术将面临的挑战,指出应重点研究:深厚土层中冻结井筒掘进期间浅部外壁破裂新机理,超深土的力学特性,高强、高性能筑壁材料与构件,超高承载力井壁结构及其力学特性,超深冻结井壁设计理论与施工技术等。 展开更多
关键词 深厚土层 深厚富水岩层 立井 冻结法凿井 冻结井壁 井壁结构 井壁材料 井壁外载 冻结壁 力学特性 设计理论 施工技术
在线阅读 下载PDF
面向含能材料化学领域的先进分析表征技术发展与展望
20
作者 应梓剑 陈建波 +7 位作者 徐金江 于谦 何璇 赵雪燕 朱春华 黄石亮 杨希 李诗纯 《含能材料》 北大核心 2025年第1期82-101,共20页
分析表征技术是含能材料化学领域科研生产不可或缺的重要工具。含能材料分析表征技术主要包括色谱、质谱、波谱、光谱、热分析、显微、散射与衍射等,通过分析表征技术的定性/定量分析可获得含能材料的化学结构、组分含量、微观形貌等信... 分析表征技术是含能材料化学领域科研生产不可或缺的重要工具。含能材料分析表征技术主要包括色谱、质谱、波谱、光谱、热分析、显微、散射与衍射等,通过分析表征技术的定性/定量分析可获得含能材料的化学结构、组分含量、微观形貌等信息,进而为含能材料相关合成表征、质量控制、库存维护、公共安全、环境监测等场景提供重要的分析数据,极大推动了含能材料行业的发展。近年来,分析表征技术在传统分析的基础上,展现出了明显的多学科交叉融合特征,并逐步向自动化、智能化、原位在线、多尺度贯通、高时空分辨等方向发展。为了更加清晰、全面地掌握含能材料分析表征技术现状与趋势,研究系统综述了各主要分析手段的技术内涵、功能特点以及在含能材料领域的应用现状,并讨论了未来的发展趋势,为含能材料化学领域相关分析表征研究提供支撑。 展开更多
关键词 高聚物粘结炸药(PBX) 含能材料 分析表征技术 自动化 智能化
在线阅读 下载PDF
上一页 1 2 157 下一页 到第
使用帮助 返回顶部