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Mechanical properties and thermal deformation behavior of low-cost titanium matrix composites prepared by a structure-optimized Y_(2)O_(3) crucible

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Journal of Iron and Steel Research International 2024年第3期31卷 738-751页

作者： Qian dang Gang Huang Ye Wang chi Zhang Guo-huai Liu Zhao-dong Wang The State Key Laboratory of Rolling and Automation Northeastern UniversityShenyang 110819LiaoningChina School of Materials Science and Chemical Engineering Harbin University of Science and TechnologyHarbin 150004HeilongjiangChina School of Materials Science and Engineering Shenyang University of TechnologyShenyang 110870LiaoningChina

A porous yttrium oxide crucible with both thermal shock resistance and erosion resistance was developed by structural *** structure-optimized yttrium oxide crucible was proved to be suitable for melting highly reactive titanium ***-cost(TiB+Y2O_(3))-reinforced titanium matrix composites were prepared by vacuum induction melting using the prepared *** thermal deformation behavior and microstructure evolution of(TiB+Y2O_(3))-reinforced tita-nium matrix composites were investigated at deformation temperatures of 900-1100℃with strain rates of 0.001-1 *** results showed that the prepared yttrium oxide crucible had both thermal shock and erosion resistance,the low-cost titanium matrix composites could be prepared by the developed yttrium oxide crucibles which were homogeneous in composition and highly sensitive to strain rate and deformation temperature,and the peak and theological stresses decreased with increasing deformation temperature or decreasing strain *** addition,the average thermal deformation activation energy of the composites was calculated to be 574.6 kJ/mol by establishing the Arrhenius constitutive equation in consideration of the strain variables,and the fitting goodness between the predicted stress value and the measured value was 97.624%.The calculated analysis of the hot processing map showed that the best stable thermal deformation zone was located in the deformation temperature range of 1000-1100℃and strain rate range of 0.001-0.01 s^(-1),where the peak dissipation coefficient wasη=71%.In this zone,the deformation of the reinforcement and matrix was harmonious,the reinforcement was less likely to fracture,dynamic recrystallization occurred more fully and the alloy exhibited near steady rheological characteristics.

关键词： Yttrium oxide crucible Titanium matrix composite Thermal deformation behavior Constitutive equation Hot processing map Microstructure evolution

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Muscling up damaged hearts through cell therapy

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Journal of Geriatric Cardiology 2006年第3期3卷 161-页

作者： chi van dang Johns Hopkins University School of Medicine

Molecular and cellular processes gleaned from the most fundamental of biomedical studies are now harnessed for their potential healing properties. In the US and throughout the world, millions of patients suffer from myocardial infarction and many succumb to the morbidity and mortality of the ensuing cardiac failure, a protracted condition in need of healing. While pharmacological agents have been the mainstay intervention that ameliorates cardiac failure through increased contractility or reduction of cardiac workload, these agents do not inherently heal the wounds inflicted by poor perfusion of the affected cardiac *** therapy, however, holds the promise of repleting the damage heart with new contractile cells that can be engineered to secrete concoctions that promote healing by recruiting new blood vessel development or *** cell therapeutic promise has already been fulfilled for many decades for hematological diseases through transplantation of bone marrow stem cells, which are now more broadly implicated for their healing potential of other tissues.

关键词： cell Muscling up damaged hearts through cell therapy

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Please join us for the 4th New Horizons in Cancer Research Conference

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Cancer Biology & Medicine 2017年第2期 105-105页

作者： Nancy E.Davidson chi van dang Kornelia Polyak Hongyang Wang Fred Hutchinson Cancer Center Abramson Cancer Center of University of Pennsylvania Philadelphia Dana Farber Cancer Institute BostonMAUSA

On behalf of the American Association for Cancer Research(AACR),we have the great pleasure to invite you to attend the 4th AACR New Horizons in Cancer Research Conference:Research Propelling Cancer Prevention and Cures,which will be held from November 6-9,2017,in Shanghai,*** year,we are honored that Fudan University will be a partner for the *** outstanding

关键词： AACR MD Ph Please join us for the 4th New Horizons in Cancer Research Conference

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Stoichiometric Ti3C2Tx Coating for Inhibiting Dendrite Growth in Anode-Free Lithium Metal Batteries

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Energy & Environmental Materials 2024年第4期7卷 153-162页

作者： Xiangrong Zeng Manmatha Mahato Woong Oh Hyunjoon Yoo van Hiep Nguyen Saewoong Oh Geetha Valurouthu Soon-Ki Jeong chi Won Ahn Yury Gogotsi Il-Kwon Oh National Creative Research Initiative for Functionally Antagonistic Nano-Engineering Department of Mechanical Engineering Korea Advanced Institute of Science and Technology (KAIST) Department of Materials Science & Engineering and A. J. Drexel Nanomaterials Institute Drexel University Department of Energy Engineering Soonchunhyang University National Nanofab Center (NNFC) Korea Advanced Institute of Science and Technology (KAIST)

Lithium metal batteries (LMBs) and anode-free LMBs (AFLMBs) present a solution to the need for batteries with a significantly superior theoretical energy ***,their adoption is hindered by low Coulombic efficiency (CE) and rapid capacity fading,primarily due to the formation of unstable solid electrolyte interphase (SEI) layer and Li dendrite growth as a result of uneven Li plating.

关键词： anode-free lithium metal batteries stoichiometric MXene solid electrolyte interphase surface terminations

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RSPSSL:A novel high-fidelity Raman spectral preprocessing scheme to enhance biomedical applications and chemical resolution visualization

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Light(Science & Applications) 2024年第2期13卷 366-386页

作者： Jiaqi Hu Gina Jinna Chen Chenlong Xue Pei Liang Yanqun Xiang Chuanlun Zhang Xiaokeng chi Guoying Liu Yanfang Ye Dongyu Cui De Zhang Xiaojun yu Hong dang Wen Zhang Junfan Chen Quan Tang Penglai Guo Ho-Pui Ho Yuchao Li Longqing Cong Perry Ping Shum State Key Laboratory of Optical Fiber and Cable Manufacture Technology Guangdong Key Laboratory of Integrated Optoelectronics IntellisenseDepartment of EEESouthern University of Science and TechnologyShenzhen 518055China College of Optical and Electronic Technology China Jiliang UniversityHangzhou 310018China Department of Nasopharyngeal Carcinoma Sun Yat-sen University Cancer CenterState Key Laboratory of Oncology in South ChinaCollaborative Innovation Center for Cancer MedicineGuangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and TherapyGuangzhou 510060China Department of Ocean Science and Engineering Southern University of Science and TechnologyShenzhen 518055China Department of Nephrology Chaozhou People’s HospitalChaozhou 521011China Clinical Research Design Division Sun Yatsen Memorial HospitalGuangzhouGuangdong 510120China School of Automation Northwestern Polytechnical UniversityXi’anShaanxi 710072China Department of Biomedical Engineering The Chinese University of Hong KongHong KongChina Guangdong Provincial Key Laboratory of Nanophotonic Manipulation Institute of NanophotonicsJinan UniversityGuangzhou 511443China

Raman spectroscopy has tremendous potential for material analysis with its molecular fingerprinting capability in many branches of science and *** is also an emerging omics technique for metabolic profiling to shape precision ***,precisely attributing vibration peaks coupled with specific environmental,instrumental,and specimen noise is *** Raman spectral preprocessing to remove statistical bias noise and sample-related errors should provide a powerful tool for valuable information ***,we propose a novel Raman spectral preprocessing scheme based on self-supervised learning(RSPSSL)with high capacity and spectral *** can preprocess arbitrary Raman spectra without further training at a speed of~1900 spectra per second without human *** experimental data preprocessing trial demonstrated its excellent capacity and signal fidelity with an 88%reduction in root mean square error and a 60%reduction in infinite norm(L__(∞))compared to established *** this advantage,it remarkably enhanced various biomedical applications with a 400%accuracy elevation(ΔAUC)in cancer diagnosis,an average 38%(few-shot)and 242%accuracy improvement in paraquat concentration prediction,and unsealed the chemical resolution of biomedical hyperspectral images,especially in the spectral fingerprint *** precisely preprocessed various Raman spectra from different spectroscopy devices,laboratories,and diverse *** scheme will enable biomedical mechanism screening with the label-free volumetric molecular imaging tool on organism and disease metabolomics profiling with a scenario of high throughput,cross-device,various analyte complexity,and diverse applications.

关键词： spectral scheme resolution

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Nonlocal isogeometric analysis for bidirectional functionally graded porous curved microbeams with arbitrary boundary conditions

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Acta Mechanica Sinica 2024年第8期40卷 194-218页

作者： Thu-Huong Nguyen Thi van Ke Tran van-Minh Phung van Hai Trinh Quoc Hoa Pham Faculty of Mechanical Engineering Hanoi University of IndustryHanoi100000Vietnam Faculty of Mechanical Engineering Le Quy Don Technical UniversityHanoi100000Vietnam Institute of Vehicle and Energy Engineering Le Quy Don Technical UniversityHanoi100000Vietnam Faculty of Engineering and Technology Nguyen Tat Thanh UniversityHo Chi Minh City700000Vietnam

This research aims to analyze the static bending and free vibration behaviors of bidirectional functionally graded porous(BFGP)curved microbeams with elastic boundary conditions resting on a Pasternak’s elastic foundation in a hygro-thermal *** analysis based on non-uniform rational B-splines,first-order shear deformation theory,nonlocal elasticity theory combined with the modified strain gradient theories,modified Timoshenko beam theory are formulated to depict bending and shear deformations of BFGP curved ***,because using the modified Timoshenko beam theory,this study removes the requirement for a shear correction factor and describes shear stress by zero at the upper and lower cross-sectional sites of the BFGP curved *** from traditional boundary conditions,where the beginning and end positions of a curved beam are connected by an elastic system of straight and torsion *** allows for greater flexibility in controlling the stiffness of the springs to obtain arbitrary *** assess the accuracy and convergence of the proposed approach,validation numerical examples were conducted in the various examples.

关键词： Bidirectional functionally graded porous material Elastic boundary condition Isogeometric analysis Curved microbeams Nonlocal elasticity theory Modified strain gradient theory

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A novel dynamic process monitoring method based on the auto-correlation and the cross-correlation analysis of process variables

A novel dynamic process monitoring method based on the auto-...

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第35届中国过程控制会议

作者： Lich dang-van Yonggang Li Bei Sun Shulong Yin School of Automation Central South University

Detecting anomalies is crucial to ensure the safety and stability of the process industry. Industrial processes often exhibit dynamic characteristics, with process monitoring variables distributed across various spatial and temporal points. The intricate relationship between these variables poses challenges to process monitoring. This paper proposes a novel method for dynamic process monitoring based on bi-directional two-dimensional principal component analysis to address this challenge. It first constructs the monitoring sample with a two-dimensional structure, where the auto-correlation of process variables distributed across different time points can be monitored by conducting two-dimensional principal component analysis in the column direction, while the cross-correlation of the process variables distributed across different spatial points can be monitored by performing the two-dimensional principal component analysis in the row direction. The effectiveness of this method has been successfully demonstrated in the TE and the roast process of zinc smelting, and results indicate a noticeable enhancement in fault monitoring rates.

关键词： Process Monitoring Two-directional 2D principal component analysis Auto-correlation Cross-correlation

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Recent advances and innovations in the design and fabrication of wearable flexible biosensors and human health monitoring systems based on conjugated polymers

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Bio-Design and Manufacturing 2024年第4期7卷 476-516页

作者： Vinh van Tran Viet-Duc Phung Daeho Lee Department of Mechanical Engineering Gachon UniversitySeongnam 13120Republic of Korea Institute of Fundamental and Applied Sciences Duy Tan UniversityHo Chi Minh City 700000Vietnam Faculty of Environmental and Chemical Engineering Duy Tan UniversityDa Nang 550000Vietnam

Wearable biosensors have received great interest as patient-friendly diagnostic technologies because of their high flexibility and *** growing research and utilization of novel materials in designing wearable biosensors have accelerated the development of point-of-care sensing platforms and implantable biomedical devices in human health *** numerous potential materials,conjugated polymers(CPs)are emerging as ideal choices for constructing high-performance wearable biosensors because of their outstanding conductive and mechanical ***,CPs have been extensively incorporated into various wearable biosensors to monitor a range of target ***,fabricating highly reliable CP-based wearable biosensors for practical applications remains a significant challenge,necessitating novel developmental strategies for enhancing the viability of such ***,this review aims to provide consolidated scientific evidence by summarizing and evaluating recent studies focused on designing and fabricating CP-based wearable biosensors,thereby facilitating future *** the superior properties and benefits of CPs,this review aims to clarify their potential applicability within this ***,the fundamentals and main components of CP-based wearable biosensors and their sensing mechanisms are discussed in *** recent advancements in CP nanostructures and hybridizations for improved sensing performance,along with recent innovations in next-generation wearable biosensors are *** wearable biosensors have been—and will continue to be—an ideal platform for developing effective and user-friendly diagnostic technologies for human health monitoring.

关键词： Conjugated polymers Wearable biosensors E-skin electronics Implantable biosensors Conductive polymer hydrogels

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吉兰泰盐湖周边柽柳灌丛聚沙聚肥效应的研究

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干旱区资源与环境 2024年第4期38卷 155-161页

作者：张琪党晓宏崔向新迟旭王磊内蒙古农业大学沙漠治理学院呼和浩特010018

柽柳灌丛是吉兰泰盐湖外围重要的植被类型,通过测定分析柽柳灌丛垂直剖面上不同深度土层机械组成和养分含量,探讨盐湖周边柽柳灌丛生长发育过程中的聚沙聚肥效应,分析结果表明:1)柽柳灌丛下伏0-20cm土层平均体积百分含量为黏粒13.44%、... 详细信息

柽柳灌丛是吉兰泰盐湖外围重要的植被类型,通过测定分析柽柳灌丛垂直剖面上不同深度土层机械组成和养分含量,探讨盐湖周边柽柳灌丛生长发育过程中的聚沙聚肥效应,分析结果表明:1)柽柳灌丛下伏0-20cm土层平均体积百分含量为黏粒13.44%、粉粒25.27%、极细沙2.97%、细沙4.63%,无粗沙和极粗沙;对照区(空地)粗沙、极粗沙体积百分含量分别为41.47%、29.47%,几乎没有细沙以下颗粒的出现,柽柳聚集细沙,粉砂,黏粒的作用明显。2)柽柳灌丛碱解氮(3.29mg·kg^(-1))、速效磷(2.85mg·kg^(-1))、速效钾含量(162.16mg·kg^(-1)),分别高于空地38.64%、47.59%、46.79%(p<0.05),聚肥效应明显。3)柽柳灌丛改土作用的能力与灌丛发育阶段有关。灌丛发育初期、中期、衰退期速效钾含量较空地分别增加28.41%、64.55%、47.41%,说明柽柳生长的中期阶段也是柽柳生长的旺盛期聚集细颗粒和肥力的能力最强。吉兰泰盐湖周边柽柳灌丛沙堆改土固沙作用的研究可为盐湖绿洲防护林的建设提供依据和技术参考。

关键词：土壤粒度特征土壤养分聚沙聚肥作用柽柳灌丛吉兰泰盐湖

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An isogeometric approach to static and transient analysis of fluid-infiltrated porous metal foam piezoelectric nanoplates with flexoelectric effects and variable nonlocal parameters

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Frontiers of Structural and Civil Engineering 2024年第3期18卷 461-489页

作者： Quoc-Hoa PHAM van Ke Tran Phu-Cuong Nguyen Faculty of Engineering and Technology Nguyen Tat Thanh UniversityHo Chi Minh City 700000Vietnam Faculty of Mechanical Engineering Le Quy Don Technical UniversityHanoi 100000Vietnam Advanced Structural Engineering Laboratory Department of Structural EngineeringFaculty of Civil EngineeringHo Chi Minh City Open UniversityHo Chi Minh City 700000Vietnam

In this work,a novel refined higher-order shear deformation plate theory is integrated with nonlocal elasticity theory for analyzing the free vibration,bending,and transient behaviors of fluid-infiltrated porous metal foam piezoelectric nanoplates resting on Pasternak elastic foundation with flexoelectric *** analysis(IGA)and the Navier solution are applied to the *** innovation in the present study is that the influence of the in-plane variation of the nonlocal parameter on the free and forced vibration of the piezoelectric nanoplates is investigated for the first *** nonlocal parameter and material characteristics are assumed to be material-dependent and vary gradually over the thickness of *** on Hamilton’s principle,equations of motion are built,then the IGA approach combined with the Navier solution is used to analyze the static and dynamic response of the ***,we investigate the effects of the porosity coefficients,flexoelectric parameters,elastic stiffness,thickness,and variation of the nonlocal parameters on the mechanical behaviors of the rectangular and elliptical piezoelectric nanoplates.

关键词： isogeometric analysis fluid-infiltrated porous piezoelectric nanoplates static and transient analysis flexoelectric effect variable nonlocal parameters

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