|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | No apparent lock-in depth of the Laschamp geomagnetic excursion: Evidence from the Malan loess显示文摘The first-order chronological framework of the long-term Chinese loess/paleosol sequences was based mainly on magnetostratigraphy. However, there remain arguments on the lock-in ages of the major geomagnetic reversals. This study systematically compared the stratigraphic locations of the Laschamp excursion and Henrich events (H4 at~39 ka and H5 at~48 ka) recorded by the Luochuan loess profile in the central Chinese Loess Plateau. Results show that the Lascchamp excursion is bracketed well by these two cold events, and the corresponding estimated age is between about 41.7-43.7 ka, which is close to the widely accepted age of ~40-41 ka for the excursion.Therefore, our new results do not suggest apparent lock-in effects in the last glacial Malan loess. | ZHU Rixiang1, LIU Qingsong1,2, PAN Yongxin1, DENG Chenglong1, ZHANG Rui1 & WANG Xianfeng3 1. Paleomagnetism and Geochronology Laboratory (SKL of Lithosphere Evolution), Institute of Geology and Geophysics, Chi- nese Academy of Sciences, Beijing 100029, China 2. Institute of Geophysics and Planetary Geophysics, University of California, Santa Cruz, CA 95064, USA 3. Department of Geology and Geophysics, University of Minnesota, Minneapolis, MN 55455, USA | 2006 | Science China Earth Sciences2006，49，9： | 12 |
| 2 | A possible Younger Dryas-type event during Asian monsoonal Termination 3显示文摘Seven U-Th dates, 560 δ 18O data and microscopic sequences were measured for sta- lagmites from two high-altitude caves in Shennongjia area, Hubei Province. Variations of the de- cadal-resolution stalagmite δ 18O record from Swan Cave (1600 m elevation) reflect large spatial changes in circulation strength and precipitation of Asian monsoon. The evidence comes from a great similarity among the stalagmite δ 18O records from Nanjing, Jiangsu Province; Libo, Guizhou Province and here studied area during the last deglaciation, including a part interval of Younger-Dryas event and Bolling-Allerod. A 30-year-resolution stalagmite δ 18O record from Yongxing Cave (1400 m eleva- tion), 70 km away from Swan Cave, reveals a rapid transition of Asian monsoon climate during Ter- mination 3 at about 245±5 kaBP. Based on 3 U-Th dates and about 5000 continuous annual bands, a millennial dry episode has been observed during Asian monsoonal Termination 3 from the Yongxing δ 18O profile. With respect to its structure, duration and transition, the dry reversal, as indicated by our stalagmite δ 18O record, generally agrees with the pattern of the YD event well-expressed in the Chi- nese stalagmite δ 18O records. This YD-type event is characterized by a large decrease in δ 18O value as much as 2.30‰, more than half of the δ 18O excursion between glacial/interglacial periods, and lasts 1371±59 a determined by the annual counting chronology. After this event, the monsoon climate shifted abruptly into the interglacial period within 74±4 a. Our data corroborate the view that the re- peated occurrence of YD-type event was not an “accident”, possibly resulted from the coupling of ice-sheet and oceanic/atmospheric circulations. | CHEN Shitao1, WANG Yongjin1, KONG Xinggong1, LIU Dianbing1, CHENG Hai2 & R.L. Edwards2 1. College of Geography Science, Nanjing Normal University, Jiangsu Key Laboratory of Environmental Change and Ecological Construction, Nanjing 210097, China 2. Department of Geology and Geophysics, University of Minnesota, Minneapolis MN55455, USA | 2006 | Science China Earth Sciences2006，49，9： | 7 |
| 3 | Leukolysin/MMP25/MT6-MMP: a novel matrix metalloproteinase specifically expressed in the leukocyte lineage显示文摘INTRODUCTIONMembersofthematrixmetajloproteinases(MMP)havebeenconsistentlyimplicatedinthedestructionofextracellularmatrix(ECM)undermanypathophysiologicalconditionsfromangiogenesistoajrthritis[1-5].Evolvedfrommodulardomainsandmotifsthroughexon-shuning... | PEI DUANQING(Department of Pharmacology, 6-120 Jackson Hall, 321Church St. S.E., University of Minnesota, Minneapolis,MN 55455, USA)Tel: 612-626-1468 Fax: 612-625-8408 E-mail: peixx003@tc. umn. edu | 1999 | Cell Research1999，9，4： | 6 |
| 4 | COMPRESSIBILITY BOUNDARY LAYER THEORY AND ITS SIGNIFICANCE IN COMPUTATIONAL HYDRODYNAMICS显示文摘COMPRESSIBILITYBOUNDARYLAYERTHEORYANDITSSIGNIFICANCEINCOMPUTATIONALHYDRODYNAMICS￥CharlesC.S.Song(UniversityofMinnesota,Minnea... | Charles C.S. Song(University of Minnesota, Minneapolis Minnesota 55455, USA) | 1996 | Journal of Hydrodynamics1996，8，2： | 5 |
| 5 | OPTIMUM CHANNEL GEOMETRY AND MINIMUM ENERGY DISSIPATION RATE显示文摘The theory of minimum rate of energy dissipation in conjunction with Yang’s sediment transport equation and Manning’s equation for water discharge is used to derive the optimum open channel geometry. The optimum channel geometry thus derived is consistent with those based on the tractive force approach and is identical to those hosed on the least wetted perimeter for a given cross-sectional area with the maximum conveyance. laboratory and field data are used to support the theoretical analyses. | Chih Ted Yang and Charles C. S. Song International and Special Projects Coordinator, U. S. Bureau of Reclamation, Denyer, Colorado 80225, U. S. A. Professor, St. Anthony Falls Hydraulic Laboratory, University of Minnesota, MinneaPOlis, Minnesota 55414, U. S. A. | 1990 | International Journal of Sediment Research1990，5，1： | 5 |
| 6 | MODELING OF RIVER MORPHOLOGIC CHANGES显示文摘MODELINGOFRIVERMORPHOLOGICCHANGESCharlesC.S.SONG;YifanZHENG;andChihTedYANG(Professor,St.AnthonyFallsHydraulicLaboratory,Depar... | Charles C. S. SONG Yifan ZHENG and Chih Ted YANG( , St. Anthony Falls Hydraulic Laboratory, Department of Civil Engineering, University of Minnesota, Minneapolis MN 55414, U. S. A.)( Bechtel Corporation, formerly Reseaxch Assistant, St. Anthony Falls H | 1995 | International Journal of Sediment Research1995，10，2： | 2 |
| 7 | Assessment of the modulated gradient model in decaying isotropic turbulence显示文摘A recently introduced nonlinear model undergoes evaluations based on two isotropic turbulent cases:a University of Wiscosion-Madison case at a moderate Reynolds number and a Johns Hopkins University case at a high Reynolds number.The model uses an estimation of the subgrid-scale(SGS) kinetic energy to model the magnitude of the SGS stress tensor,and uses the normalized velocity gradient tensor to model the structure of the SGS stress tensor.Testing is performed for the first case through a comparison between direct numerical simulation(DNS) results and large eddy simulation(LES) results regarding resolved kinetic energy and energy spectrum.In the second case,we examine the resolved kinetic energy,the energy spectrum,as well as other key statistics including the probability density functions of velocities and velocity gradients,the skewness factors,and the flatness factors.Simulations using the model are numerically stable,and results are satisfactorily compared with DNS results and consistent with statistical theories of turbulence. | Hao Lu a) Saint Anthony Falls Laboratory,Department of Civil Engineering,University of Minnesota-Twin Cities,2 3rd Ave.SE,Minneapolis,MN 55414,USA | 2011 | Theoretical & Applied Mechanics Letters2011，1，4： | 2 |
| 8 | Comparison of acoustic emission activity in reinforced and prestressed concrete beams under bending 显示文摘 | Dr Carol K Shield Minneapolis | 1997 | Construction and Building Materials1997，11，3： | 1 |
| 9 | Cutaneous manifestations of diabetes:signs of poor glycemic control or new-onset disease显示文摘 | MCGRAW H MINNEAPOLIS MN | 2006 | Postgraduate Medicine2006，1193，： | 1 |
| 10 | Engineering relations for heat transfer and friction in high-velocity laminar and turbulent boundary layer flow over surfaces with constant pressure and temperature 显示文摘 | Eckert E R G Minneapolis Minn | 1956 | Transactions of the ASME1956，78，6： | 1 |
| 11 | Evidence on effects of early loading on enhanced ossintegration 显示文摘 | Ko CC Minneapolis MN | 2003 | Implant Dent2003，12，1： | 1 |
| 12 | Comparison ofacoustie emission ac- tivity in reinforced andprestressed concrete beams under bending显示文摘 | Dr Carol K Shield Minneapolis | 1997 | Construction and Building Materi'' ds1997，11，3： | 1 |
| 13 | Experimental study of the velocity and temperature distribution in a high velocity vortex-type flow显示文摘 | HARTNETT ECKERT MINNEAPOLIS | 1957 | Transactions of the ASME1957，79，5： | 1 |
| 14 | Treatment of unstable distal radius fractures显示文摘 | Fischer MD Minneapolis M | 1997 | J Hand Surg Am1997，22，2： | 1 |
| 15 | 明尼苏达大学德卢斯校区斯文森科学楼显示文摘2007年ASLA专业奖评委
评语:“这是个成功的案例。它的核心建筑群与多彩的植物群相协调。它那简约的风格是经过精心设计的,整体效果让人惊叹,但是细部景观处理得恰到好处。” | oslund.and.assoc., Minneapolis, Minnesota | 2007 | 风景园林2007，14，2： | 1 |
| 16 | Cell transplantation and cardiac recovery:myocardial regeneration from endogenous cardiac progenitor cells显示文摘Following the bone marrow or cardiac derived progenitor cells transplantation,improved left ventricular(LV) function,decreased LV remodeling, and decreased fibrosis of non-infarcted LV regions,and in some cases,the reduction of infarct scar size have been reported to occur in animal mycardial infarction(MI) models.In clinical trials, stem cell transplantation has also been associated with significant,but modest improvements of LV functional parameters.These beneficial effects do occur although in many animal studies there is often very low long term engraftment or transdifferentiation of transplanted cells into myocytes and vascular cells.Importantly,paracrine signals generated by the implanted progenitor cells seem to play an important role in limiting or reversing myocardial damage as- sociated with acute MI.Paracrine signaling effects include increased myocardial vascularization and reduced apoptosis of native cardiomyocytes;these responses are most prominent in peri-myocardial infarction (MI) boarder zone(BZ) of the heart.Although much data supports the possibility that engrafted progenitor cells can mobilize endogenous cardiac progenitor cells(CPC) to the cardiac injury site and also stimulate them to propagate and transd-ifferentiate into cardiomyocytes and vascular cells, this concept remains controversial.We and others have reported evidences supporting the view that endogenous CPC can be stimulated to differentiate and partially replace cardiomyocytes destroyed during an MI.Data from our laboratory will be reviewed. | Jianyi Zhang (Department of Medicine,University of Minnesota Medical School,University of Minnesota Medical School,Minneapolis,MN 55455,USA) | 2011 | 岭南心血管病杂志2011，17，S1： | 0 |
| 17 | Symplectic supercuspidal representations and related problems显示文摘In this paper, we summarize the basic structures and properties of irreducible symplectic supercuspidal representations of GLn(F) over a p-adic local field F with characteristic zero, and explore possible topics for further investigation. | JIANG DiHua1, NIEN ChuFeng2 & QIN YuJun3 1School of Mathematics, University of Minnesota, Minneapolis, MN 55455, USA 2Department of Mathematics, National Cheng Kung University, Tainan 701, Taiwan, China 3Department of Mathematics, East China Normal University, Shanghai 200241, China | 2010 | Science China Mathematics2010，53，3： | 0 |
| 18 | EVANS FUNCTIONS AND ASYMPTOTIC STABILITY OF TRAVELING WAVE SOLUTIONS显示文摘This paper studies the asymptotic stability of traveling we solutions of nonlinear systems of integral-differential equations. It has been established that linear stability of traveling waves is equivalent to nonlinear stability and some 'nice structure' of the spectrum of an associated operator implies the linear stability. By using the method of variation of parameter, the author defines some complex analytic function, called the Evans function. The zeros of the Evans function corresponds to the eigenvalues of the associated linear operator. By calculating the zeros of the Evans function, the asymptotic stability of the travling wave solutions is established. | ZHANG LINGHAI School of Mathematics, University of Minnesota, 206 Church Street S.E., Minneapolis, MN 55455, USA. | 2001 | Chinese Annals of Mathematics,Series B2001，22，3： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员