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Characterization for Fusion Candidate Vanadium Alloys

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Plasma Science and technology 2004年第4期6卷 2395-2399页

作者： t.Muroga t.Nagasaka J.M.Chen Z.y.Xu Q.y.Huang y.C.Wu NationalInstituteforFusionScience Toki509-5292Japan SouthwesternInstituteofPhysics Chengdu610041China InstituteofPlasmaPhysics ChineseAcademyofSciencesHefei230031China

this paper summarizes recent achievements in the characterization ofcandidate vanadium alloys obtained for fusion in the framework of the Japan-China Core UniversityProgram. National Institute for Fusion Science (NIFS) has a program of fabricating high-purityV-4Cr-4ti alloys. the resulting products (NIFS-HEAt-1,2), were characterized by various researchgroups in the world including Chinese partners. South Western Institute of Physics (SWIP) fabricateda new V-4Cr-4ti alloy (SWIP-Heat), and carried out a comparative evaluation of hydrogenembrittlement of NIFS-HEAts and SWIP-Heat. the tensile test of hydrogen-doped alloys showed that theNIFS-HEAt maintained the ductility to relatively high hydrogen levels. the comparison of the datawith those of previous studies suggested that the reduced oxygen level in the NIFS-HEAts should beresponsible for the increased resistance to hydrogen embrittlement. Based on the chemical analysisdata of NIFS-HEAts and SWIP-Heats, neutron-induced activation was analyzed in Institute of PlasmaPhysics (IPP-CAS) as a function of cooling time after the use in the fusion first wall. the resultsshowed that the low level of Co dominates the activity up to 50 years followed by a domination of Nbor Nb and Al in the respective alloys. It was suggested that reduction of Co and Nb, both of whichare thought to have been introduced via cross-contamination into the alloys from the molds usedshould be crucial for reducing further the activation.

关键词： vanadium alloys characterization nuclear fusion

Effect of Duct Geometry on Shock Wave Discharge

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Journal of thermal Science 2006年第4期15卷 349-354页

作者： y.-H.Kweon y.Miyazato t.Aoki H.-D.Kim t.Setoguchi Department of Energy and Environmental Engineering Kyushu UniversityKasuga 816-8580Japan Faculty of Environmental Engineering The University of KitakyushuKitakyushu 808-0135Japan School of Mechanical Engineering Andong National UniversityAndong 760-749Korea Department of Mechanical System Engineering Saga UniversitySaga 840-8502Japan

this paper describes computational work to understand the unsteady flow-field of a shock wave discharging from an exit of a duct and impinging upon a flat plate. A flat plate is located downstream, and normal to the axis of the duct. the distance between the exit of the duct and flat plate is changed. In the present study, two different duct geometries （i.e., square and cross section） are simulated to investigate the effect of duct geometry on the un-steady flows of a shock wave. In computation, the total variation diminishing （tVD） scheme is employed to solve three-dimensional, unsteady, compressible, Euler equations. Computations are performed over the range of shock Mach number from 1.05 to 1.75. Computational results can predict the three-dimensional dynamic behaviour of the shock wave impinging upon the flat plate. the results obtained show that the pressure increase generated on the plate by the shock impingement depends on the duct geometry and the distance between the duct exit and plate, as well as the shock Mach number. It is also found that for the duct with cross-section, the unsteady loads acting on the flat plate are less, compared with the square duct.

关键词： unsteady flow compressible flow shock wave shock impingement duct geometry

toMFIR-based fault detection approach in frequency domain

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Journal of Systems Engineering and Electronics 2011年第1期22卷 33-37页

作者： Wen Chen Chih Ping yeh Hanlong yang Division of Engineering technology Wayne State University Detroit M148202 USA Vehicle Group Eaton Corporation Southfield MI 48076 USA

this paper is to explore further results for total measurable fault information-based residual（toMFIR） approach to fault detection in dynamic *** toMFIR contains the essential fault information and remains unaffected by control actions in a closed-loop *** is composed of controller residual and output residual and some of further results are developed in frequency *** the ability of detecting actuator and sensor faults,it is able to detect faults/failures resulting from the computer used for control purpose that generates control ***,all of existing fault detection schemes cannot achieve the same task at all.A practical DC motor example,with a PID controller,is used to demonstrate the effectiveness of the toMFIR-based fault detection.A comparison with the standard observer-based technique is also provided.

关键词： fault detection total measurable fault informationbased residual(toMFIR) output residuals controller residuals frequency domain.

MULtIPLICAtIVE PERtURBAtIONS OF LOCAL α-tIMES INtEGRAtED C-SEMIGROUPS

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Acta Mathematica Scientia 2017年第3期37卷 877-888页

作者： Nai-Sher yeh Chung-Cheng KUO Department of Mathematics Fu Jen Catholic University New Taipei City Taiwan China

We establish some left and right multiplicative perturbations of a local α-timesintegrated C-semigroup S（·） on a complex Banach space X with non-densely defined genera- tor, which can be applied to obtain some additive perturbation results concerning S（·）. Some growth conditions of the perturbations of S（·） are also established.

关键词： Integrated C-semigroup generator abstract Cauchy problem perturbation

Performance assessment of innovative seismic resilient steel knee braced frame

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Frontiers of Structural and Civil Engineering 2016年第3期10卷 291-302页

作者： tony t. y. yANG yuanjie LI International Joint Research Laboratory of Eearthquake Engineering 1239 Siping Road Shanghai 200002 China Department of Civil Engineering University of British Columbia Vancouver BC V6T1Z4 Canada

Buckling restrained knee braced truss moment frame （BRKBtMF） is a novel and innovative steel structural system that utilizes the advantages of long-span trusses and dedicated structural fuses for seismic applications. Steel trusses are very economical and effective in spanning large distance. However, conventional steel trusses are typically not suitable for seismic application, due to its lack of ductility and poor energy dissipation capacity. BRKBtMF utilizes buckling restrained braces （BRBs） as the designated structural fuses to dissipate the sudden surge of earthquake energy. this allows the BRKBtMF to economically and efficiently create large span structural systems for seismic applications. In this paper, a prototype BRKBtMF office building located in Berkeley, California, USA, was designed using performance-based plastic design procedure. the seismic performance of the prototype building was assessed using the state-of-the-art finite element software, OpenSees. Detailed BRB hysteresis and advanced element removal technique was implemented. the modeling approach allows the simulation for the force-deformation response of the BRB and the force redistribution within the system after the BRBs fracture. the developed finite element model was analyzed using incremental dynamic analysis approach to quantify the seismic performance of BRKBtMF. the results show BRKBtMF has excellent seismic performance with well controlled structural responses and resistance against collapse. In addition, life cycle repair cost of BRKBtMF was assessed using the next-generation performance-based earthquake engineering framework. the results confirm that BRKBtMF can effectively control the structural and non-structural component damages and minimize the repair costs of the structure under different ranges of earthquake shaking intensities. this studies conclude that BRKBtMF is a viable and effective seismic force resisting system.

关键词： buckling restrained brace innovative structural system collapse simulation seismic assessment

ULtRASHORt PULSE MULtISPECtRAL NON-LINEAR OPtICAL MICROSCOPy

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Journal of Innovative Optical Health Sciences 2009年第1期2卷 27-35页

作者： ADAM M.LARSON ANtHONy LEE PO-FENG LEE KAyLA J.BAyLESS ALVIN t.yeh Department of Biomedical Engineering texas A&M University College Station TexasUSA Department of Molecular and Cellular Medicine texas A&M Health Science Center College Station TexasUSA

Ultrashort pulse,multispectral non-linear optical microscopy(NLOM)is developed and used to image,simultaneously,a mixed population of cells expressing different fluorescent protein mutants in a 3D tissue model of ***,sub-10-fs pulses are used to excite multiple fluorescent proteins and generate second harmonic in collagen.A 16-channel multispectral detector is used to delineate the multiple non-linear optical signals,pixel by pixel,in *** ability to image multiple fluorescent protein mutants and collagen,enables serial measurements of cell-cell and cell-matrix interactions in our 3D tissue model and characterization of fundamental processes in angiogenic morphogenesis.

关键词： two-photon excited fluorescence second harmonic generation multiple molecular imaging angiogenesis

Effects of arginine supplementation on splenocyte cytokine mRNA expression in rats with gut-derived sepsis

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World Journal of Gastroenterology 2005年第45期11卷 7091-7096页

作者： Huey-Fang Shang Chun-Sen Hsu Chiu-Li yeh Man-Hui Pai Sung-Ling yeh Department of Microbiology and Immunology Taipei Medical University Taipei Taiwan China Department of Obstetrics and Gynecology TaipeiMedical University Municipal Wan Fang Hospital Taipei TaiwanChina Department of Anatomy Taipei Medical UniversityTaipei Taiwan China School of Nutrition and HealthSciences Taipei Medical University Taipei Taiwan China

AIM： to investigate the effects of arginine （Arg）-enriched diets before sepsis and/or Arg-containing total parenteral nutrition （tPN） after sepsis or both on cytokine mRNA expression levels in splenocytes of rats with gut-derived sepsis. MEtHODS： Rats were assigned to four experimental groups. Groups 1 and 2 were fed with a semipurified diet, while groups 3 and 4 had part of the casein replaced by Arg which provided 2% of the total calories. After the rats were fed with these diets for 10 d, sepsis was induced by cecal ligation and puncture （CLP）, at the same time an internal jugular vein was cannulated. All rats were maintained on tPN for 3 d. Groups 1 and 3 were infused with conventional tPN, while groups 2 and 4 were supplemented with Arg which provided 2% of the total calories in the tPN solution. All rats were killed 3 d after CLP to examine their splenocyte subpopulation distribution and cytokine expression levels. RESULtS： Plasma interleukin （IL）-2, IL-4, tumor necrosis factor-α （tNF-α） and interferon （IFN-γ） were not detectable 3 d after CL.P. there were no differences in the distributions of CD45Ra＋, CD3＋, CD4＋, and CD8＋ cells in whole blood and splenocytes among the four groups. the splenocyte IL-2 mRNA expression in the Arg-supplemented groups was significantly higher than that in group 1. IL-4 mRNA expression in groups 3 and 4 was significantly higher than that in groups 1 and 2. the mRNA expression of IL-10 and IFN-γ was significantly higher in group 4 than in the other three groups. there was no difference in tNF-α mRNA expression among thefour groups CONCLUSION： the influence of Arg on the whole blood and splenic lymphocyte subpopulation distribution is not obvious. However, Arg administration, especially before and after CLP, significantly enhances the mRNA expression levels of thl and th2 cytokines in the spleen of rats with gut-derived sepsis.

关键词： Arginine Sepsis Cytokine mRNA expression

Solution procedure of residue harmonic balance method and its applications

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Science China(Physics,Mechanics & Astronomy) 2014年第8期57卷 1581-1591页

作者： GUO ZhongJin LEUNG A y t MA Xiaoyan School of Mathematics and Statistics Taishan University Department of Civil and Architectural Engineering City University of Hong Kong

this paper presents a simple and rigorous solution procedure of residue harmonic balance for predicting the accurate approximation of certain autonomous ordinary differential *** this solution procedure,no small parameter is *** harmonic residue of balance equation is separated in two parts at each *** first part has the same number of Fourier terms as the present order of approximation and the remaining part is used in the subsequent *** corrections are governed by linear ordinary differential equation so that they can be solved easily by means of harmonic balance method *** kinds of different differential equations involving general,fractional and delay ordinary differential systems are given as numerical examples *** accurate limited cycle frequency and amplitude are *** results match well with the exact solutions or numerical solutions for a wide range of control *** with those available shows that the residue harmonic balance solution procedure is very effective for these autonomous differential ***,the present method works not only in predicting the amplitude but also the frequency of bifurcated period solution for delay ordinary differential equation.

关键词： residue harmonic balance accurate approximation fractional ordinary differential system delay ordinary differential system

Reduced prostate branching morphogenes,s in stromal fibroblast, but not in epithelial, estrogen receptor a knockout mice

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Asian Journal of Andrology 2012年第4期14卷 546-555页

作者： Ming Chen Chiuan-Ren yeh Chih-Rong Shyr Hsiu-Hsia Lin Iun Da Shuyuan yeh Departments of Urology and Pathology University of Rochester Medical Center Rochester New York 14642 USA Sex Hormone Research Center China Medical University Hospital Taichung 40402 Taiwan China

Early studies suggested that estrogen receptor alpha （ERa） is involved in estrogen-mediated imprinting effects in prostate development. We recently reported a more complete ERa knockout （KO） mouse model via mating β-actin Cre transgenic mice with floxed ERa mice. these ACtB-ERaKO male mice showed defects in prostatic branching morphogenesis, which demonstrates that ERa is necessary to maintain proliferative events in the prostate. However, within which prostate cell type ERa exerts those important functions remains to be elucidated. to address this, we have bred floxed ERa mice with either fibroblast-specific protein （FSP）-Cre or probasin-Cre transgenic mice to generate a mouse model that has deleted ERa gene in either stromal fibroblast （FSP-ERaKO） or epithelial （pes-ERaKO） prostate cells. We found that circulating testosterone and fertility were not altered in *** and pes-ERaKO male mice. Prostates of FSP-ERaKO mice have less branching morphogenesis compared to that of wild-type littermates. Further analyses indicated that loss of stromal ERa leads to increased stromal apoptosis, reduced expression of insulin-likegrowth factor-1 （IGF-1） and FGFIO, and increased expression of BMP4. Collectively, we have established the first in vivo prostate stromal and epithelial selective ERaKO mouse models and the results from these mice indicated that stromal fibroblast ERa plays important roles in prostatic branching morphogenesis via a paracrine fashion. Selective deletion of the ERa gene in mouse prostate epithelial cells by probasin-Cre does not affect the regular prostate development and homeostasis.

关键词： Cre-loxP estrogen receptor knockout prostate stromal-epithelial interaction