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EFFECT OF RADIAL ELECTRICAL FIELD ON NEOCLASSICAL TRANSPORT IN TOKAMAKS

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核聚变与等离子体物理 1996年第1期 47-54页

作者： z. T. WANG G. L. CLAIR(Center canadien de fusion magnetique 1804 montee)(ste-Julie, Varennes Quebec, Canada, J3X1S1)(Southwestern Institute of Physics, P. O. Box 432, Chengdu 610041, P. R. China.)( MPB Technologies, Dorval, Quebec, Canada.)

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关键词： Radical electrical field Neoclassical transport Squeezing factor

YARLUNG zANGBO OPHIOLITES,SOUTHERN TIBET REVISITED

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地学前缘 2000年第S1期7卷 124-126页

作者： Hébert Réjean 1, G.Beaudoin 1,V.Varfalvy 1, F.Huot 2, Wang C.S. 3, Liu z.F. 4(1 Département de Géo logie et de génie géologique , Université Lav al,ste\|Foy, Qc,Canada, G1K 7P4, E\|mail:hebert@ggl.ulaval.ca 2 Institut universitaire euro

Field work conducted in September 1998 and Summer 1999 aimed to reassess the ophiolitic segment of the Yarlung zangbo suture zone (YzS) and shed new light on the preserved fragments of Neo\|Tethys ocean\|floor. This eastern ophiolitic segment was partly surveyed during the 1980 Sino\|French Cooperative Investigation of Himalayas, but little work has been done since that time. Progress in ophiolite research field and new developments in modern ocean crust guided us in the recent field work investigation. Mantle peridotites and associated minor crustal units are assumed Early Cretaceous in age, while diabase interbedded with phyllites and radiolarian sediments of presumed seamount origin are attributed to Late Jurassic—Early Cretaceous age. Six different massifs were visited that are from west to east: Jiding, Qunrang, Beimarang, Dazhuqu, Luobusa, and zedang. Each massif presents specific characteristics summarized below. The Jiding massif is made of partly to totally serpentinized granular upper mantle harzburgites with orthopyroxenite banding, a transitional Moho zone, a thick diabase sill\|dike complex intruded into heterogeneous gabbro, and pillow lavas.. High\|temperature plastic foliation, although generally oriented NW—SE, and lineation show folding. Numerous gabbroic and diabasic intrusions are observed in peridotites. The orientations of the mafic rocks foliation and lineation do not fit the structure of the host peridotites. The 350m thick transition zone is a syntectonically intrusive sequence of mantle peridotites cut by abundant different types of gabbro and diabase. In one case intrusion of gabbro postdates serpentinization of peridotites and the outer margin of the xenolith enclosed in fine\|grained gabbro has reacted to form pegmatitic hornblende gabbro. The crustal unit is made of gabbro intruded by multiple fine\|grained dikes. Hydrothermal circulation was locally intense and Cu mineralization and epidosite are observed close to shear *** Qunra

关键词： Yarlung zangbo Xigaze ophiolites mineral chemistry mantle heterogeneities

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A review of concentrated flow erosion processes on rangelands:Fundamental understanding and knowledge gaps

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International Soil and Water Conservation Research 2016年第2期4卷 75-86页

作者： Sayjro K.Nouwakpo Christopher J.Williams Osama z.Al-Hamdan Mark A.Weltz Fred Pierson Mark Nearing University of Nevada RenoDepartment of Natural Resources and Environmental Science1664 N.Virginia StreetRenoNV 89557USA USDA ARSNorthwest Watershed Management Research800 Park BLVD.STE 105BoiseID 83712USA Texas A&M University–Kingsville Department of Civil and Architectural EngineeringKingsvilleTX 78363USA USDA ARSGreat Basin Rangelands Research920 Valley RoadRenoNV 89512USA USDA ARSSouthwest Watershed Research2000 East Allen RoadTucsonAZ 85719USA

Concentrated flow erosion processes are distinguished from splash and sheetflow processes in their enhanced ability to mobilize and transport large amounts of soil,water and dissolved *** rangelands,soil,nutrients and water are scarce and only narrow margins of resource losses are tolerable before crossing the sustainability *** these ecosystems,concentrated flow processes are perceived as indicators of degradation and often warrant the implementation of mitigation ***,this negative perception of concentrated flow processes may conflict with the need to improve understanding of the role of these transport vessels in redistributing water,soil and nutrients along the rangeland *** influences the development and erosion of concentrated flowpaths and has been the primary factor used to control and mitigate erosion on *** the ecohydrologic level,vegetation and concentrated flow pathways are engaged in a feedback relationship,the understanding of which might help improve rangeland management and restoration *** this paper,we review published literature on experimental and conceptual research pertaining to concentrated flow processes on rangelands to:(1)present the fundamental science underpinning concentrated flow erosion modeling in these landscapes,(2)discuss the influence of vegetation on these erosion processes,(3)evaluate the contribution of concentrated flow erosion to overall sediment budget and(4)identify knowledge gaps.

关键词： Erosion Rangeland Concentrated flow Rill Gully

Fe-Mo-B-CSINTERED ste ELS PRODUCED BY ADDITI ON OF MAsteR ALLOY POWDERS

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Acta Metallurgica Sinica(English Letters) 1999年第5期12卷 1198-1201页

作者： z. M. Xiu1) , L. X. Ding2) , z. J. zhao3) , J. You3) , z. zhang3) , F. M. He1)and X. D. Sun1)1) School of Materials and Metallurgy , Northeastern University , Shenyang 110006 , China2) Department of Materials , School of Mechan

Addition of Fe B C and Fe Mo B C m aster alloy pow ders to Fe Mo B Csintered steels can ac tivate the sintering process by liquid phase sintering . The for m ation of liquid ( α- Fe + ( Fe , Mo... 详细信息

Addition of Fe B C and Fe Mo B C m aster alloy pow ders to Fe Mo B Csintered steels can ac tivate the sintering process by liquid phase sintering . The for m ation of liquid ( α- Fe + ( Fe , Mo) 2 B+ Fe3( B, C) → L) i m proves m echanical properties of the steels , and ultim ate tensilestrengths of 684 774 M Pa , i m pact energy of 47 ±7 Jand elongation of 2 5 ±0 9 were ob tained . Optim u m a mount of liquid phase exists , and alarge a mount of liquid phase will re sult in the form ation of continuous netw ork of liquid phase that is detrim ental to strength andelongation .

关键词： m aster alloy po w der densification shrinkage

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超声多模态影像组学模型在慢性肾脏病纤维化检测中的诊断准确性

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国际医学放射学杂志 2023年第3期 368-368页

作者： X.Y.Ge z.K.Lan Q.Q.Lan H.S.Lin G.D.Wang J.Chen 马玫

摘要目的利用二维超声（B-mode）和声触诊弹性成像（ste）图像的影像组学特征与临床特征相结合，预测慢性肾脏病病人的肾脏纤维化。方法使用配备SC5-1U凸阵探头

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