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| 1 | Surface Nanocrystallization (SNC) of Metallic Materials-Presentation of the Concept behind a New Approach显示文摘In this paper, a concept of surface nanocrystallization (SNC) of metallic materials is introduced.Three types of SNC processes are classified. Different SNC mechanisms and possible techniques for SNC are discussed with emphasis on mechanically induced surface self-nanocrystallization.Further development and prospects are addressed with respect to the properties and behaviors of the materials with a nanocrystalline surface. Enhancement of the behavior of the engineering materials by means of the SNC technology and its industrial application possibilities are analyzed. | Lu, K Lu, J | 1999 | Journal of Materials Science & Technology1999，15，3： | 296 |
| 2 | Preface显示文摘We are very proud and honored to have been entrusted to guest edit this special issue entitled'Mobile Ad Hoc and Sensor Systems',for the Journal of Computer Science and Technology,the leading Chinese journal in the area of computing.Our main goal was to put together a strong issue emphasizing quality and relevance to current interests in this important field.Our goal was to attract leading researchers in this'hot'field of research | Li, Xiao-Dong Luo, Wen-Jian Yao, Xin | 2008 | Journal of Computer Science & Technology2008，23，1： | 91 |
| 3 | Early Detection of Lesions of Dorsal Artery of Foot in Patients with Type 2 Diabetes Mellitus by High-frequency Ultrasonography显示文摘This study evaluated the value of high-frequency ultrasonograpy for early detection of dorsal artery of foot in patients with type 2 diabetes mellitus (MD). Eighty subjects including 40 patients with type 2 MD (T2DM group) and 40 healthy volunteers (NC group) were recruited. The in-tima-media thickness (IMT), the inner diameter and the perfusion of dorsal artery of foot were meas-ured by using high-frequency ultrasonograpy. Meanwhile, the parameters of vascular elasticity, including stiffness parameter (β), pressure-strain elastic modulus (Eρ), arterial compliance (AC), aug-ment index (AI), and pulse wave conducting velocity (PWVβ) were detected by means of echo-tracking technique. The results showed that no significant difference was found in the IMT, systolic diameter (Ds), diastolic diameter (Dd) and peak systolic velocity (PSV) between T2DM and NC groups. Eρ and PWVβ were increased, and AC was decreased in T2DM group as compared with those in NC group with the differences being significant (P<0.05 for all). There was no significant difference in β and AI between T2DM and NC groups. It was concluded that high-frequency ultra-sonography in combination with echo-tracking technique is sensitive and non-invasive, and can be used for early detection of sclerosis of the lower extremity artery in patients with type 2 MD. | 张艳容 李雯静 严天慰 鲁成发 周翔 黄艳 | 2009 | Journal of Huazhong University of Science and Technology(Medical Sciences)2009，29，3： | 149 |
| 4 | Metal Fabrication by Additive Manufacturing Using Laser and Electron Beam Melting Technologies显示文摘Selective laser melting (SLM) and electron beam melting (EBM) are relatively new rapid, additive manufac- turing technologies which can allow for the fabrication of complex, multi-functional metal or alloy monoliths by CAD-directed, selective melting of precursor powder beds. By altering the beam parameters and scan strategies, new and unusual, even non-equilibrium microstructures can be produced; including controlled microstructural architectures which ideally extend the contemporary materials science and engineering paradigm relating structure-properties-processing-performance. In this study, comparative examples for SLM and EBM fabricated components from pre-alloyed, atomized precursor powders are presented. These include Cu, Ti–6Al–4V, alloy 625 (a Ni-base superalloy), a Co-base superalloy, and 17-4 PH stainless steel. These systems are characterized by optical metallography, scanning and transmission electron microscopy, and X-ray diffraction. | Lawrence E. Murr Sara M. Gaytan Diana A. Ramirez Edwin Martinez Jennifer Hernandez Krista N. Amato Patrick W. Shindo Francisco R. Medina Ryan B. Wicker | 2012 | Journal of Materials Science & Technology2012，28，1： | 98 |
| 5 | Development and prospect on fully mechanized mining in Chinese coal mines显示文摘Fully mechanized mining(FMM)technology has been applied in Chinese coal mines for more than 40 years.At present,the output of a FMM face has reached 10-million tons with Chinese-made equipment.In this study,the new developments in FMM technology and equipment in Chinese coal mines during past decades are introduced.The automatic FMM technology for thin seams,complete sets of FMM technology with ultra large shear height of 7 m for thick seams,complete sets of fully mechanized top coal caving technology with large shear height for ultra-thick seams of 20 m,complete sets of FMM technology for complex and difficult seams,including steeply inclined seams,soft coal seams with large inclination angle,and the mechanized filling mining technology and equipment are presented.Some typical case studies are also introduced.Finally,the existing problems with the FMM technology are discussed,and prospect of FMM technology and equipment applied in Chinese coal mines is put forward. | Jinhua Wang | 2014 | International Journal of Coal Science & Technology2014，1，3： | 91 |
| 6 | Support technologies for deep and complex roadways in underground coal mines:a review显示文摘Based on geological and mining characteristics,coal mine roadways under complex conditions were divided into five types,for each type the deformation and damage characteristics of rocks surrounding roadways were analyzed.The recent developments of roadway support technologies were introduced abroad,based on the experiences of supports for deep and complex roadways from Germany,the United States and Australia.The history and achievements of roadway support technologies in China were detailed,including rock bolting,steel supports,grouting reinforcement and combined supports.Four typical support and reinforcement case studies were analyzed,including a high stressed roadway 1,000 m below the surface,a roadway surrounded by severely weak and broken rocks,a chamber surrounded by weak and broken rocks,and a roadway with very soft and swelling rocks.Based on studies and practices in many years,rock bolting has become the mainstream roadway support form in China coal mines,and steel supports,grouting reinforcement and combined supports have also been applied at proper occasions,which have provided reliable technical measures for the safe and high effective construction and mining of underground coal mines. | Hongpu Kang | 2014 | International Journal of Coal Science & Technology2014，1，3： | 117 |
| 7 | Reduction Algorithms Based on Discernibility Matrix:The Ordered Attributes Method显示文摘In this paper, we present reduction algorithms based on the principle of Skowron’s discernibility matrix - the ordered attributes method. The completeness of the algorithms for Pawlak reduct and the uniqueness for a given order of the attributes are proved. Since a discernibility matrix requires the size of the memory of U2, U is a universe of objects, it would be impossible to apply these algorithms directly to a massive object set. In order to solve the problem, a so-called quasi-discernibility matrix and two reduction algorithms are proposed. Although the proposed algorithms are incomplete for Pawlak reduct, their opimal paradigms ensure the completeness as long as they satisfy some conditions. Finally we consider the problem on the reduction of distributive object sets. | 王珏 王驹 等 | 2001 | Journal of Computer Science & Technology2001，16，6： | 130 |
| 8 | Theory and practice of integrated coal production and gas extraction显示文摘 | Liang Yuan | 2015 | International Journal of Coal Science & Technology2015，2，1： | 63 |
| 9 | Corrosion Resistance of Graphene-Reinforced Waterborne Epoxy Coatings显示文摘Graphene(G) was dispersed uniformly in water and used as an inhibitor in waterborne epoxy coatings.The effect of dispersed G on anticorrosion performance of epoxy coatings was evaluated.The composite coatings displayed outstanding barrier properties against H_2O molecule compared to the neat epoxy coating.Open circuit potential(OCP),Tafel and electrochemical impedance spectroscopy(EIS)analysis con-?rmed that the corrosion rate exhibited by composite coatings with 0.5 wt%G was an order of magnitude lower than that of neat epoxy coating.Salt spray test results revealed superior corrosion resistance offered by the composite coating. | Shuan Liu Lin Gu Haichao Zhao Jianmin Chen Haibin Yu | 2016 | Journal of Materials Science & Technology2016，32，5： | 67 |
| 10 | A Review on Casting Magnesium Alloys: Modification of Commercial Alloys and Development of New Alloys显示文摘The research and development status of casting magnesium alloys including the commercial casting alloys and the new types casting alloys are reviewed,with more attention to microstructure and mechanical properties of modified-AZ91,AM60 and WE43 alloys with various additions,and new types of low cost casting alloys and high strength casting alloys.The modification and/or refinement of Mg2 Si phase in Mg–Al–Si based casting alloys by various additions are discussed and new purifying technologies for casting magnesium alloys are introduced to improve the performance.The modified AZ81 alloy with reduced impurities is found to have the tensile strength of 280 ± 6 MPa and elongation of 16% ± 0.7%.The fatigue strength of AZ91 D alloy could be obviously improved by addition of Ce and Nd.The Mg–16Gd–2Ag–0.3Zr alloy exhibits very high tensile and yield strengths(UTS:423 MPa and YS:328 MPa);however,its elongation still needs to be improved. | Fusheng Pan Mingbo Yang Xianhua Chen | 2016 | Journal of Materials Science & Technology2016，32，12： | 78 |
| 11 | Friction stir based welding and processing technologies-processes,parameters,microstructures and applications:A review显示文摘Friction stir welding(FSW) has achieved remarkable success in the joining and processing of aluminium alloys and other softer structural alloys. Conventional FSW, however, has not been entirely successful in the joining, processing and manufacturing of different desired materials essential to meet the sophisticated green globe requirements. Through the efforts of improving the process and transferring the existing friction stir knowledge base to other advanced applications, several friction stir based daughter technologies have emerged over the timeline. A few among these technologies are well developed while others are under the process of emergence. Beginning with a broad classification of the scattered frictions stir based technologies into two categories, welding and processing, it appears now time to know,compile and review these to enable their rapid access for reference and academia. In this review article,the friction stir based technologies classified under the category of welding are those applied for joining of materials while the remnant are labeled as friction stir processing(FSP) technologies. This review article presents an overview of four general aspects of both the developed and the developing friction stir based technologies, their associated process parameters, metallurgical features of their products and their feasibility and application to various materials. The lesser known and emerging technologies have been emphasized. | G.K.Padhy C.S.Wu S.Gao | 2018 | Journal of Materials Science & Technology2018，34，1： | 65 |
| 12 | A review of selective laser melting of aluminum alloys: Processing,microstructure, property and developing trends显示文摘Selective laser melting(SLM) is an attractive rapid prototyping technology for the fabrication of metallic components with complex structure and high performance. Aluminum alloy, one of the most pervasive structural materials, is well known for high specific strength and good corrosion resistance. But the poor laser formability of aluminum alloy restricts its application. There are problems such as limited processable materials, immature process conditions and metallurgical defects on SLM processing aluminum alloys. Some efforts have been made to solve the above problems. This paper discusses the current research status both related to the scientific understanding and technology applications. The paper begins with a brief introduction of basic concepts of aluminum alloys and technology characterization of laser selective melting. In addition, solidification theory of SLM process and formation mechanism of metallurgical defects are discussed. Then, the current research status of microstructure, properties and heat treatment of SLM processing aluminum alloys is systematically reviewed respectively. Lastly, a future outlook is given at the end of this review paper. | Jinliang Zhang Bo Song Qingsong Wei Dave Bourell Yusheng Shi | 2019 | Journal of Materials Science & Technology2019，35，2： | 77 |
| 13 | Research progress of monitoring, forecasting, and prevention of rockburst in underground coal mining in China显示文摘As one of the dynamic disasters of coal mines,rockburst seriously affects underground safe coal mining.Based on the laboratory test,field test,and theoretical analysis,this study proposed the principle of the rock burst induced by the combination of dynamic and static stresses and divided such rock burst into three types,including induced by primary dynamic stress,mainly induced by dynamic stress,and by dynamic stress in low critical stress state.The expressions of the static stress induced by coal mining and dynamic stress induced by mining tremors were obtained.Moreover,theories and technologies at home and abroad were summarized concerning the monitoring,forecasting,and preventing of rockburst.These mainly include the zoning and leveling forecasting method,electromagnetic radiation technology,elastic wave and seismic wave computed tomography technologies in aspect of rockburst monitoring,as well as the intensity weakening theory,the strong-soft-strong structure effect,the directional hydraulic fracturing technology,the roadway support system in regards of rockburst prevention.The prospect of rockburst development suggested that researches concerning the rockburst mechanism should be quantitatively developed around the roadway and coalface surrounding coal-rock mass.It should be focused on the rockburst mechanism and prevention technology of mining with over 1,000 km deep and mining in large tectonic zone.In addition,the monitoring and prevention of rockburst should be based on rockburst mechanism. | Linming Dou Zonglong Mu Zhenlei Li Anye Cao Siyuan Gong | 2014 | International Journal of Coal Science & Technology2014，1，3： | 64 |
| 14 | QoS Guided Min—Min Heuristic for Grid Task Scheduling显示文摘Task scheduling is an integrated component of computing. With the emergence of Grid and ubiquitous computing, new challenges appear in task scheduling based on properties such as security, quality of service, and lack of central control within distributed administrative domains. A Grid task scheduling framework must be able to deal with these issues. One of the goals of Grid task scheduling is to achieve high system throughput while matching applications with the available computing resources. This matching of resources in a non-deterministically shared heterogeneous environment leads to concerns over Quality of Service (QoS). In this paper a novel QoS guided task scheduling algorithm for Grid computing is introduced. The proposed novel algorithm is based on a general adaptive scheduling heuristics that includes QoS guidance.The algorithm is evaluated within a simulated Grid environment. The experimental results show that the new QoS guided Min-Min heuristic can lead to significant performance gain for a variety of applications. The approach is compared with others based on the quality of the prediction formulated by inaccurate information. | 何晓珊 孙贤和 Gregor von Laszewski | 2003 | Journal of Computer Science & Technology2003，18，4： | 75 |
| 15 | Microarchitecture of the Godson-2 Processor显示文摘The Godson project is the first attempt to design high performance general-purpose microprocessors in China.This paper introduces the microarchitecture of the Godson-2 processor which is a 64-bit, 4-issue, out-of-order execution RISC processor that implements the 64-bit MIPS-like instruction set. The adoption of the aggressive out-of-order execution techniques (such as register mapping, branch prediction, and dynamic scheduling) and cache techniques (such as non-blocking cache, load speculation, dynamic memory disambiguation) helps the Godson-2 processor to achieve high performance even at not so high frequency. The Godson-2 processor has been physically implemented on a 6-metal 0.18μm CMOS technology based on the automatic placing and routing flow with the help of some crafted library cells and macros. The area of the chip is 6,700 micrometers by 6,200 micrometers and the clock cycle at typical corner is 2.3ns. | Wei-WuHu Fu-XinZhang Zu-SongLi | 2005 | Journal of Computer Science & Technology2005，20，2： | 52 |
| 16 | Backfilling technology and strata behaviors in fully mechanized coal mining working face显示文摘Based on the principle of fully mechanized backfilling and coal mining technology and combined with the Xingtai Coal Mine conditions,we mainly optimized the coal mining equipment and adjusted the coal mining method in the Xingtai Coal Mine 7606 working face for implementation this technology.Firstly,we define the practical backfilling process as the ''(from backfilling scraper conveyor's) head to tail backfilling,step by step swinging up of the tamping arm,gradual compacting,moving formed backfilling scraper conveyor when the second tamping arm cannot pass and connecting the immediate roof by back material push front material movement''.Meanwhile,the stress changes of backfill body in coal mined out area was monitored by stress sensors,and the roof caving law was analyzed by monitoring the dynamic subsidence of à210 west roadway of this face.The site tests results show that using this new backfilling and coal mining integrated technology,the production capacity in the 7606 working face can reach to 283,000 ton a year,and 282,000 ton of solid materials(waste and fly ash) is backfilled,which meets the needs of high production and efficiency.The goaf was compactly backfilled with solid material and the strata behavior was quite desirable,with an actual maximum vertical stress of the backfill body of 5.5 MPa.Backfill body control the movement of overburden within a certain range,and there is no collapses of major areas in the overlying strata upon backfilled gob.The maximum subsidence and speed were 231 mm and 15.75 mm/d respectively,which proved the practical significance of this integrated technology. | Zhang Qiang Zhang Jixiong Huang Yanli Ju Feng | 2012 | International Journal of Mining Science and Technology2012，22，2： | 55 |
| 17 | Novel Magnesium Alloys Developed for Biomedical Application:A Review显示文摘There is an increasing interest in the development of magnesium alloys both for industrial and biomedical applications.Industrial interest in magnesium alloys is based on strong demand of weight reduction of transportation vehicles for better fuel efficiency,so higher strength,and better ductility and corrosion resistance are required.Nevertheless,biomedical magnesium alloys require appropriate mechanical properties, suitable degradation rate in physiological environment,and what is most important,biosafety to human body. Rather than simply apply commercial magnesium alloys to biomedical field,new alloys should be designed from the point of view of nutriology and toxicology.This article provides a review of state-of-the-art of magnesium alloy implants and devices for orthopedic,cardiovascular and tissue engineering applications. Advances in new alloy design,novel structure design and surface modification are overviewed.The factors that influence the corrosion behavior of magnesium alloys are discussed and the strategy in the future development of biomedical magnesium alloys is proposed. | Nan Li Yufeng Zheng | 2013 | Journal of Materials Science & Technology2013，29，6： | 58 |
| 18 | Key technologies and equipment for a fully mechanized top-coal caving operation with a large mining height at ultra-thick coal seams显示文摘 | Jinhua Wang Bin Yu Hongpu Kang Guofa Wang Debing Mao Yuntao Liang Pengfei Jiang | 2015 | International Journal of Coal Science & Technology2015，2，2： | 57 |
| 19 | Design, Preparation and Properties of Carbon Fiber Reinforced Ultra-High Temperature Ceramic Composites for Aerospace Applications: A Review显示文摘Carbon fiber reinforced ultra-high temperature ceramic(UHTC) composites, consisting of carbon fibers embedded in a UHTC-matrix or a C–SiC–UHTC-matrix, are deemed as the most viable class of materials that can overcome the poor fracture toughness and thermal shock resistance of monolithic UHTC materials, and also improve the oxidation resistance and ablation resistance of C/C and C/SiC composites at ultra-high temperatures. In this review, we summarize the different processing routes of the composites based on the UHTC introducing methods, including chemical vapor infiltration/deposition(CVI/D),precursor infiltration and pyrolysis(PIP), reactive melt infiltration(RMI), slurry infiltration(SI), in-situ reaction, hot pressing(HP), etc; and the advantages and drawbacks of each method are briefly discussed. The carbon fiber reinforced UHTC composites can be highly tailorable materials in terms of fiber,interface, and matrix. From the perspective of service environmental applications for engine propulsions and hypersonic vehicles, the material designs(mainly focusing on the composition, quantity, structure of matrix, as well as the architecture of carbon fibers, UHTCs and pores), their relevant processing routes and properties(emphasizing on the mechanical and ablation properties) are discussed in this paper. In addition, we propose a material architecture to realize the multi-function through changing the distribution of carbon fibers, UHTCs and pores, which will be an important issue for future development of carbon fiber reinforced UHTC composites. | Sufang Tang Chenglong Hu | 2017 | Journal of Materials Science & Technology2017，33，2： | 51 |
| 20 | Globus Toolkit Version 4: Software for Service-Oriented Systems显示文摘自从 1990 年代末, Globus 工具箱(GT ) 被开发了支持面向服务的分布式计算应用程序和基础结构的发展。核心 GTcomponents 地址在一个普通框架以内,基础关于安全发出,资源存取,资源管理,数据运动,资源发现等等。这些部件启用“造在上的工具和部件的一个更宽广的 Globus 生态系统”,或互操作与,提供大量有用申请级的功能的 GTfunctionality。这些工具接着被用来开发大量两个基础结构和分布式的 applications.I 这里总结的“格子”最近的网基于服务的 GT4 版本的主要特征,以坚韧性在先前发行上提供重要改进,性能,可用性,文档,标准依从,并且功能。我也介绍新“ dev.globus ”社区开发过程,它允许一个更大的社区贡献 Globus 的发展软件。 | Ian Foster | 2006 | Journal of Computer Science & Technology2006，21，4： | 44 |
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