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hetero-deformation promoted strengthening and toughening in BCC rich eutectic and near eutectic high entropy alloys

Journal of Materials Science & Technology 2023年第15期146卷 1-9页

作者： d.h.chung J.Lee Q.F.he Y.K.Kim K.R.Lim h.S.Kim Y.Yang Y.S.Na department of Special Alloys Extreme Materials Research InstituteKorea Institute of Materials ScienceChangwonThe Republic of Korea department of Mechanical Engineering City University of Hong KongKowloon TongKowloonHong KongChina Graduate Institute of Ferrous Technology Pohang University of Science and TechnologyPohangThe Republic of Korea Center for heterogenic Metal Additive Manufacturing Pohang University of Science and TechnologyPohangThe Republic of Korea department of Materials Science and Engineering City University of Hong KongKowloon TongKowloonHong KongChina

heterostructured eutectic high-entropy alloys(EhEAs)have attracted significant attention owing to their novel properties,such as balanced combinations of strength and fracture ***,the toughening/strengthening mechanisms of these EhEAs have not been thoroughly *** this study,we developed a series of dual-phase Al_((18–2x))Co_(30)Cr_((11+x))Fe_((11+x))Ni_(3)0(x=-1,0,1)eutectic and neareutectic hEAs containing face-centered cubic(FCC)and body-centered cubic(BCC)*** the high amount of BCC,which is referred to as the brittle phase,newly developed EhEAs exhibited superior fracture ***,we discovered that a fully eutectic hEA exhibited further improvements in both yield stress and fracture toughness,outperforming our off-eutectic and other previously reported *** combining experiments and theoretical models,we demonstrated that the synergistic increase in both strength and toughness in our fully eutectic hEA was derived from the high hetero-deformationinduced(hdI)strengthening/toughening associated with a high misorientation angle at the grain/phase boundaries.

关键词： Eutectic high entropy alloy Fracture toughness heterogeneous structure hetero deformation induced strengthening Misorientation angle

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ACP电阻耦合开关线路的设计

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计算机研究与发展 1964年第4期 26-33页

作者： d.h.chung J.A.Palmieri 伊林

在“先进的线路計划”中发展了一种硅晶体管的直接耦合邏辑线路。硅晶体管在集-基极“二极管”中具有足夠的电場梯度,它允許在正向偏压条件下高速工作。电流开关技术提供了合适的控制电平,使得晶体管能在不牺牲高速度的区域内工作。在... 详细信息

在“先进的线路計划”中发展了一种硅晶体管的直接耦合邏辑线路。硅晶体管在集-基极“二极管”中具有足夠的电場梯度,它允許在正向偏压条件下高速工作。电流开关技术提供了合适的控制电平,使得晶体管能在不牺牲高速度的区域内工作。在这个区域中工作,可以得到线路的簡化并且只有很低的功率损耗。对于組合状态的器件作了定义。描述了邏辑线路和功率放大器装置的設計技术。功率驅动和傳輸线驅动线路中采用了鍺隧道二极管。为测量延迟时間,組成含有424个线路的模型。发现ACP线路(为这类线路所取的名称)能在3.2毫微秒内完成两級邏辑作用。

关键词： ACP 挑路电流开关密度函数硅晶体管电阻电阻抗

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超声内镜下实时彩色多普勒血流成像鉴别肿瘤性及非肿瘤性胆囊息肉的诊断效能

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国际医学放射学杂志 2018年第4期 489-489页

作者： S.Y.Kim J.h.Cho E.J.Kim d.h.chung K.K.Kim Y.h.Park 郑孝飞 division of Gastroenterology Department of Internal MedicineGachon UniversityGil Medical Center

目的评价实时彩色多普勒血流(CdF)超声内镜(EUS)对肿瘤及非肿瘤性胆囊息肉的鉴别诊断价值。方法这项前瞻性研究自2014年8月—2016年12月连续纳入共233例胆囊息肉病人,均接受实时CdF-EUS检查。CdF成像对每例病人进行主观分类:强CdF模式、... 详细信息

目的评价实时彩色多普勒血流(CdF)超声内镜(EUS)对肿瘤及非肿瘤性胆囊息肉的鉴别诊断价值。方法这项前瞻性研究自2014年8月—2016年12月连续纳入共233例胆囊息肉病人,均接受实时CdF-EUS检查。CdF成像对每例病人进行主观分类:强CdF模式、弱CdF模式和无CdF模式。结果这233例病人中115例接受了手术切除,其中90例非肿瘤性胆囊息肉,23例肿瘤性胆囊息肉。多变量分析显示,强CdF模式是肿瘤性息肉最重要的预测因素;敏感度、特异度、阳性预测值、阴性预测值和准确度分别为52.2%、79.4%、38.7%、86.9%和73.9%。孤立性息肉和息肉大小与肿瘤风险增加有关。结论 EUS显示强CdF模式、孤立以及较大的息肉可以用来预测肿瘤性胆囊息肉。由于实时CdF-EUS安全无创,无需额外设备,因此很可能成为鉴别诊断胆囊息肉的补充检查。

关键词：胆囊息肉鉴别诊断 CdF 超声内镜非肿瘤性

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肺腺癌病人胸部CT深度学习生存预测模型的组织病理学基础

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国际医学放射学杂志 2023年第1期46卷 107-107页

作者： J.G.Nam S.Park C.M.Park Y.K.Jeon d.h.chung J.M.Goo 王天灏

摘要一种基于CT的术前深度学习预测模型,能评估肺腺癌切除后的无病生存率。但是深度学习的黑盒特性阻碍了对其结果的解释。目的提供支持深度学习生存预测模型的

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Exploiting fly models to investigate rare human neurological disorders

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Neural Regeneration Research 2025年第1期20卷 21-28页

作者： Tomomi Tanaka hyung-Lok chung department of Neurology Houston Methodist Research InstituteHoustonTXUSA department of Neurology Weill Cornell Medical CollegeNew YorkNYUSA

Rare neurological diseases,while individually are rare,collectively impact millions globally,leading to diverse and often severe neurological *** attributed to genetic mutations that disrupt protein function or structure,understanding their genetic basis is crucial for accurate diagnosis and targeted *** investigate the underlying pathogenesis of these conditions,researchers often use non-mammalian model organisms,such as drosophila(fruit flies),which is valued for their genetic manipulability,cost-efficiency,and preservation of genes and biological functions across evolutionary *** tools available in drosophila,including CRISPR-Cas9,offer a means to manipulate gene expression,allowing for a deep exploration of the genetic underpinnings of rare neurological *** boasts a versatile genetic toolkit,rapid generation turnover,and ease of large-scale experimentation,making it an invaluable resource for identifying potential drug *** can expose flies carrying disease-associated mutations to various compounds,rapidly pinpointing promising therapeutic agents for further investigation in mammalian models and,ultimately,clinical *** this comprehensive review,we explore rare neurological diseases where fly research has significantly contributed to our understanding of their genetic basis,pathophysiology,and potential therapeutic *** discuss rare diseases associated with both neuron-expressed and glial-expressed *** cases include mutations in CdK19 resulting in epilepsy and developmental delay,mutations in TIAM1 leading to a neurodevelopmental disorder with seizures and language delay,and mutations in IRF2BPL causing seizures,a neurodevelopmental disorder with regression,loss of speech,and abnormal *** we explore mutations in EMC1 related to cerebellar atrophy,visual impairment,psychomotor retardation,and gain-of-function mutations in ACOX1 causing Mitchell ***-of-fun

关键词： ACOX1 drosophila melanogaster glia lipid metabolism model organisms neuroinflammation neurologic disorders neuron rare disease VLCFA

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52例肺微浸润性腺癌(MIA)的CT表现及肿瘤实性部分测量方法的比较

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国际医学放射学杂志 2015年第5期 503-503页

作者： S.M.Lee J.M.Goo K.h.Lee d.h.chung J.Koh C.M.Park 崔效楠 department of Radiology Seoul National University College of Medicineand Institute of Radiation MedicineSeoul National University Medical Research Center

摘要目的旨在回顾性研究肺微浸润性腺癌（MIA）的CT表现,并确定测量肿瘤实性部分大小的适当方法。方法自2012年5月—2014年4月,52例病人共55个肺结节经手术病理证实为MIA,2位放射科医师独立评估结节的CT表现并测量结节的实性部分。结果... 详细信息

摘要目的旨在回顾性研究肺微浸润性腺癌（MIA）的CT表现,并确定测量肿瘤实性部分大小的适当方法。方法自2012年5月—2014年4月,52例病人共55个肺结节经手术病理证实为MIA,2位放射科医师独立评估结节的CT表现并测量结节的实性部分。结果 55个MIA的平均大小为（10.5±4.8）mm（范围4;8 mm）。52例病人中28例的MIA

关键词：微浸润 MIA 磨玻璃结节实性部分性腺泌尿生殖系统 CT

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Crystallization Modulation and holistic Passivation Enables Efficient Two‑Terminal Perovskite/CuIn(Ga)Se_(2)Tandem Solar Cells

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Nano-Micro Letters 2025年第1期17卷 205-215页

作者： Cong Geng Kuanxiang Zhang Changhua Wang chung hsien Wu Jiwen Jiang Fei Long Liyuan han Qifeng han Yi‑Bing Cheng Yong Peng State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070People’s Republic of China Triumph Photovoltaic Materials Co. Ltd.No.1001 Yannan AvenueHigh‑Tech Development DistrictBengbuAnhui 233000People’s Republic of China College of Materials Science and Engineering Guilin University of TechnologyGuilin 541004People’s Republic of China State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong UniversityShanghai 200240People’s Republic of China

Two-terminal(2-T)perovskite(PVK)/CuIn(Ga)Se_(2)(CIGS)tandem solar cells(TSCs)have been considered as an ideal tandem cell because of their best bandgap matching regarding to Shockley–Queisser(S–Q)***,the nature of the irregular rough morphology of commercial CIGS prevents people from improving tandem device *** this paper,d-homoserine lactone hydrochloride is proven to improve coverage of PVK materials on irregular rough CIGS surfaces and also passivate bulk defects by modulating the growth of PVK *** addition,the minority carriers near the PVK/C60 interface and the incompletely passivated trap states caused interface recombination.A surface reconstruction with 2-thiopheneethylammonium iodide and N,N-dimethylformamide assisted passivates the defect sites located at the surface and grain ***,LiF is used to create this field effect,repelling hole carriers away from the PVK and C60 interface and thus reducing *** a result,a 2-T PVK/CIGS tandem yielded a power conversion efficiency of 24.6%(0.16 cm^(2)),one of the highest results for 2-T PVK/CIGS TSCs to our *** validation underscores the potential of our methodology in achieving superior performance in PVK/CIGS tandem solar cells.

关键词： PVK/CIGS TSCs Irregular rough surfaces Modulating the growth PVK/C60 interface recombination

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Self-sensing concrete:from resistance-based sensing to capacitance-based sensing

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International Journal of Smart and Nano Materials 2021年第1期12卷 1-19页

作者： d.d.L.chung Composite Materials Research Laboratory Department of Mechanical and Aerospace EngineeringUniversity at Buffalothe State University of New YorkBuffaloNYUSA

Self-sensing uses the cement-based material without sensor incor-poration to sense *** paper reviews self-sensing cementbased materials,with coverage of the well-studied resistance-based sensing as well as the less-studied capacitance-based *** review is the first that covers capacitance-based ***-based sensing is advantageous over resistance-based sensing in that no particular admixture is required,so that it is applicable to both existing and new *** contrast,resis-tancebased sensing that is comparable to capacitance-based sen-sing in stress/strain sensitivity requires conductive admixtures,such as carbon ***-based strain sensing is based on piezo-resistivity,which is associated with the resistance increasing upon tension and decreasing upon ***-based strain sensing is based on piezopermittivity,which is associated with the permittivity decreasing upon tension and increasing upon *** causes the resistance to increase and causes the permittivity to *** in temperature decreases the resistance but increases the *** review also covers the methodology of the electrical measurements.

关键词： Cement concrete sensing resistance capacitance

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dynamic stress concentration in an infinitely long cylindrical cavity due to a point spherical source embedded within a fluid-saturated poroelastic formation of infinite extent

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Applied Mathematics and Mechanics(English Edition) 2025年第1期46卷 139-156页

作者： h.hOSSEINI O.BALILAShAKI department of Mechanical Engineering Faculty of EngineeringGolestan University

The effects of a harmonically exciting monopole source on an infinitely long cylindrical cavity embedded entirely within a fluid-saturated poroelastic formation of infinite extent are examined theoretically. It is assumed that the source is located outside the cavity at a specified distance from the borehole axis. The magnitudes of the hoop and radial stresses beside the pore pressures exerted on the interface and inside the porous medium surrounding the borehole are calculated and discussed. Biot's poroelastic modeling along with three types of boundary conditions for the cylindrical interface including the ideal fluid, empty borehole, and rigid inclusion with a hard boundary is employed for the analysis. Utilizing a proper translational addition theorem for expressing the incident spherical wave in terms of cylindrical wave expansions, the proposed boundary conditions at the interface are satisfied. Stresses are formulated by means of wave potential functions in a three-dimensional(3d) manner. The effects of the frequency and the radial distance between the source and borehole on the induced stresses are examined for the first cylindrical modes over frequency spectra. Two permeability conditions for the interface and three types of soils for the porous formation are considered throughout the analysis. To give an overall outline of the study, a numerical example is presented. The results clearly indicate that the distance is a key parameter and has considerable effects on the induced stress values. In addition, the interface permeability condition and soil characteristics play an important role in determining the dynamic response of the borehole. Finally,the obtained results are compared with the relevant analyses existing in the literature for some limit cases, and good agreement is achieved.

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Neuroinflammation as a therapeutic target in huntington's disease

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Neural Regeneration Research 2025年第3期20卷 817-818页

作者： Andrea Kwakowsky Thulani h.Palpagama Center for Brain Research and department of Anatomy and Medical Imaging Faculty of Medical and Health SciencesUniversity of AucklandAucklandNew Zealand Pharmacology and Therapeutics School of MedicineGalway Neuroscience CentreUniversity of GalwayGalwayIreland

In 1872, George huntington presented his essay “On Chorea” to the Meigs and Mason Academy of Medicine and, in doing so, detailed a disease that would later bear his name. huntington's disease(hd) is a genetic, neurodegenerative disease that manifests as the loss of motor control,cognitive impairment,and mood and psychiatric changes in paents.

关键词： huntington inflammation Medicine

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