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Acta Metallurgica Sinica(English Letters) 2024年第2期37卷 255-265页

作者： x.Y.Yue S.Y.Peng x.Zhang C.N.He Y.Z.Tian Key Laboratory for Anisotropy and Tex.ure of Materials(Ministry of Education) School of Materials Science and EngineeringNortheastern UniversityShenyang110819China School of Materials Science and Engineering and Tianjin Key Laboratory of Composite and Functional Materials Tianjin UniversityTianjin300350China Research Centre for Metallic Wires Northeastern UniversityShenyang110819China

A Cu-10wt%Fe composite was prepared through hot-pressed sintering,and the material was subsequently solution *** hot-pressed sintered and solution treated materials were rolled and *** precipitation behavior and performance changes were systematically studied by using scanning electron microscopy and transmission electron *** contrast to the hot-pressed sintered specimen,the solution treatment significantly affects the thermal stability and properties of the Cu-10wt%Fe *** Cu-10wt%Fe composite was prepared after solid solution,cold rolling and aging at 773 K for 1 h,and it obtained ex.ellent tensile strength of 494 MPa,uniform elongation of 16.3%,electrical conductivity of 51.1%IACS and softening temperature of 838 *** for the distinct difference in thermal stability and properties between hot-pressed sintered and solution treated specimens were *** findings provide a theoretical basis for designing high-performance Cu-based in-situ composites by post treatment.

关键词： Cu-Fe composite Hot-pressed sintering Thermal stability Strength Electrical conductivity

Large non-pedunculated colorectal polyp management: The elephant in the room

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World Journal of Gastroenterology 2024年第25期30卷 3126-3131页

作者： Shirley x.Jiang Neal Shahidi Department of Medicine University of British ColumbiaVancouver V6Z 2K5BCCanada

Minimally invasive innovations have transformed *** to colorectal cancer(CRC),there has been a shift towards less invasive surgical techniques and use of endoscopic resection as an alternative for low risk T1 *** role of endoscopic resection is however much more ex.ensive:It is now considered the first line management strategy for most large(≥20 mm)non-pedunculated colorectal polyps,the majority of which are *** is due to the well-established efficacy,safety,and cost-effectiveness of endoscopic techniques compared to *** endoscopic modalities now ex.st with distinct risk-benefit profiles and their outcomes are further improved by site-specific technical modifications,aux.liary techniques,and adverse event miti-gation *** capacity continues to evolve with emerging endoscopic techniques and ex.anding applications,particularly in the confines of a multi-disciplinary setting.

关键词： Cancer Colonoscopy Endoscopy Polyp Endoscopic mucosal resection Endoscopic submucosal dissection

Overview of SOI Materials Technology in China

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Overview of SOI Materials Technology in China

Higher-order mode analysis for SOLEIL-type superconducting cavity

第一届中国核技术及应用研究学术研讨会

作者： x. wang Shanghai SMGUI Technology Co., Ltd, 200 Puhui Road, Jiading, Shanghai 201821 and Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, 865 Changning Road, 200050 Shanghai

The SOI technology is now moving into commercial product applications, particularly for high performance and low power CMOS circuits, radiation hardness devices and high temperature electronics. Trends in the SOI material initiate a new branch of the silicon based industry. From the early 1980s, SOI technologies, including ZMR, SIMOx. BESOI, ELO, Smart-cut and ELTRAN were developed in China. SIMOx.is the most mature SOI

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中国科学技术大学学报 2024年第7期54卷 0706-1-0706-11页

作者： Chai x. Li Q. x. Y. Tang Y. Tan M. Wu C.-F. National Synchrotron Radiation Laboratory University of Science and Technology of China Hefei 230029 China

A 499.8 MHz SOLEIL-type superconducting cavity was simulated and designed for the first time in this paper. The higher-order mode (HOM) properties of the cavity were investigated. Two kinds of coax.al HOM couplers were designed. Using 4 L-type and 4 T-type HOM couplers, the longitudinal impedance was suppressed to 3 kΩ, and the transverse impedance below 30 kΩ/m. The HOM damping requirements of Hefei Advanced Light Facility (HALF) were satisfied. This paper conducts an in-depth study on the radio frequency (RF) design, multipacting optimization, and thermal analysis of these coax.al couplers. Simulation results indicated that under operating acceleration voltage, the optimized couplers does not ex.ibit multiplicating or thermal breakdown phenomena. The cavity has the potential to reach a higher acceleration gradient.

关键词：高次模耦合器超导腔高频系统二次电子倍增热仿真

The Monolithic Glass-Ceramic Lined Steel Elbow Made by SHS Gravitational-Thermite Process

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The Monolithic Glass-Ceramic Lined Steel Elbow Made by SHS G...

Curved Spine: The Shape of Spine in Taoist Body Diagrams and Its Influence on Medical Body Diagrams

The 3～〔rd〕International Conference on High-Performance Ceramics(CICC-3)（2）

作者： S.-x. wang W.-Y. Gao T.-C. Ma K.-M. Liang and x.-H. ZhangDepart. Mater. Sci. and Eng. Dalian Institute of Light Industry Dalian 116034 P.R. China Depart. Mater. Sci. and Eng. Tsinghua University Beijing 100084 P.R. China

＜正＞ A monolithic glass-ceramic lined steel elbow with 90°-bend angle was fabricated using a self-propagating high-temperature synthesis gravitational-thermite process （SHS G-T process）. The manufacture principle and some technologies were introduced. Ex.eriment results showed that the inner surface of the composite elbow was smooth and there were no visible cracks and pores in it. The coating layer was symmetry and was of-2.5 mm thick. It consisted of two zones （glass-like zone, columnar zone） and that there ex.sted three phases （Al2O3, glass and Fe particles） in both of the two zones. However, the Al2O3 grains were different evidently in the two zones. x.D results showed that there was no hercynite phase in the coating layer.

关键词： Self-propagating high-temperature synthesis Coatings Wear Elbow

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Chinese Medicine and Culture 2024年第3期7卷 251-261页

作者： Zhang x. Zhang S. Institute of Chinese Medical Literature and Culture Shandong University of Traditional Chinese Medicine Jinan 250355 China Institute of Acupuncture and Mox.bustion China Academy of Chinese Medical Sciences Beijing 100700 China

From the early Taoist diagrams of the human body to the end of the Qing Dynasty and the beginning of the Republic of China, Taoists ex.ggerated and deformed the human spine in a shape-shifting manner. It is likely that medical practitioners were influenced by this style of representation, and there are also numerous diagrams of the human body with the curved spine in the lateral-view diagrams of viscera and Ming Tang Tu, which always show the human torso in an elliptical "egg shape". No later than the Ming dynasty, medical practitioners began to depict the actual physiological spinal curve of the human body. By the Qing dynasty, the depiction of the spinal curve in medical diagrams of the human figure showed a tendency to part ways with the Taoist freehand style of the previous generation. Although the representation of the curve of the spine was very crude, later medical images of the human body at least gradually straightened the spine and no longer depicted it in a shape-shifting manner. However, the curved spine in Taoist diagrams of the human body continued to ex.st, and the presentation of the curved spine never changed. This way of depicting its appearance, which is very different from reality, is shaped by Taoism's special way of perceiving and viewing the body, and may also contain another form of truth. Copyright © 2024 Shanghai University of Traditional Chinese Medicine.

关键词： Diagrams of human body Spine Taoists Traditional Chinese Medical Practitioners

Research progress on fluorescence sensing properties of metal-organic frameworks

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Journal of Molecular Science 2024年第2期40卷 107-114页

作者： Zhou x. Chai Y. Lu-Sun W. Fu Z. wang B. Yuan G. School of Chemical and Blasting Engineering Anhui University of Science and Technology Huainan 232001 China

The metal-organic frameworks (MOFs) have the characteristics of high porosity and crystallinity, which also makes MOFs have the advantages of high sensitivity, high selectivity and high efficiency in the field of fluorescence sensing. It can detect the target substance efficiently and quickly, and has ex.ellent anti-interference. Therefore, MOFs materials are also considered as ideal materials for fluorescence sensors. This paper introduces three common preparation methods of MOFs materials: hydrothermal/solvothermal method, mechanochemical method and microwave method. We focus on the application status of MOFs materials in the three fluorescence sensing fields of small molecules, metal cations and inorganic anions, as well as the shortcomings and improvement methods of MOFs materials in this application field. Finally, in view of the shortcomings of MOFs materials in the field of fluorescence sensing, such as poor stability, fluorescence quenching phenomenon susceptible to environmental interference, etc., it is proposed that more in-depth research should be carried out in the future in terms of anti-interference and reuse © 2024, Department of Chemistry, Northeast Normal University. All rights reserved.

关键词： detection fluorescence metal-organic framework sense

Clinical decision of centric relation

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Hua x. Kou Qiang Yi x.e Za Zhi / West China Journal of Stomatology 2024年第5期42卷 558-565页

作者： Haiyang Y. Zhebin Y. Chenyang x. Qin W. State Key Laboratory of Oral Diseases National Center for Stomatology National Clinical Research Center for Oral Diseases Dept. of Prosthodontics West China Hospital of Stomatology Sichuan University Chengdu 610041 China

Centric relation (CR) was used in the complete dentures for edentulous jaws firstly. Then, CR was gradually applied in the clinical diagnosis and treatment of dentate jaws. Regarding the application of CR in dentate jaws, there are many doubts about its rationality. For instance, should CR be the core of diagnosis and treatment of temporomandibular disorders? Should CR be used as the jaw position of establishing occlusion in occlusal reconstruction? Should CR serve as the target jaw position in orthodontic treatment? Meanwhile, varieties of CR clinical applications are objective. According to the ex.sting evidence, this paper summarizes the applicable conditions of several main clinical situations with little controversy. We preliminarily put forward the decision tree for the clinical application of CR, which can be used as a reference in clinical practice. © 2024 Editorial Department of West China Journal of Stomatology. All rights reserved.

关键词： centric relation complete denture condyle max.mal intercuspal position occlusal reconstruction orthodontic treatment temporomandibular disorder

Synthesis of Eu-doped Core/Shell Vanadate Nanopartilces with Different Shell:Surface Effect on Spectral and Dynamic Properties

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Synthesis of Eu-doped Core/Shell Vanadate Nanopartilces with...

第18届国际真空大会

作者： P. Zhou H.S.Peng* x. H. wang S. H. Huang Key Laboratory of Luminescence and Optical Information Ministry of Education Institute of Optoelectronic Technology Beijing Jiaotong University Beijing 100044 China.

In rare earth doped nanoparticles （NPs）, luminescence is severely quenched by surface effect. Hence, surface coating is found very helpful to improve luminescence quantum yield in many nanosystems. However, the shell is critical to the improvement of luminescence of NPs, depending on its nature against the core NPs. In this paper, YVO4: Eu3+ NPs coated with two different shells, i.e., LaVO4 and YVO4, were prepared respectively. The shells both belong to zircon structure, but the mismatch values of the radius of doped Eu3+ ion versus that of Y3+ and La3+ is different. The spectral and dynamics properties are investigated in bare and core/shell NPs, and surface effect is discussed in detail.

关键词： Surface effect Luminescence Core/shell Nanoparticles

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轻质铝基熵合金:概述与未来趋势

Science China Materials 2024年第1期67卷 31-46页

作者：崔立莹张展陈晓光 Department of Applied Science University of Quebec at Chicoutimi555boulevard de l’UniversiteSaguenay G7H 2B1QCCanada

新一代合金——高熵合金的出现,揭示了熵效应在合金设计中的重要意义.受这一概念的启发,轻质铝基熵合金这一概念被提出.随着对低密度结构材料的需求不断增加,这些新型合金在各种应用中具有巨大的潜力.本文综述了轻质铝基熵合金的发展背... 详细信息

新一代合金——高熵合金的出现,揭示了熵效应在合金设计中的重要意义.受这一概念的启发,轻质铝基熵合金这一概念被提出.随着对低密度结构材料的需求不断增加,这些新型合金在各种应用中具有巨大的潜力.本文综述了轻质铝基熵合金的发展背景、设计原理、制造方法、微观结构和力学性能、高温应用,及其发展前景.通过对当前研究的全面调查,本文重点研究分析了122种密度低于4.0 g cm-3的铝基熵合金.轻质铝基熵合金可以弥补传统铝和钛合金在机械性能和密度方面的差距.轻质铝基熵合金优异的热稳定性使其有望成为在高温下使用的结构材料.此外,本文还讨论了轻质铝基熵合金领域的未来发展趋势.机器学习作为有效计算工具,可以极大地提高合金的开发效率.

关键词：高温应用合金设计新型合金机器学习铝基计算工具高熵合金微观结构