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Isotopic records from polar ice cores imply globally asynchronous warming at the end of the last glaciation. However, 10Be exposure dates show that large-scale retreat of mid-latitude Last Glacial Maximum glaciers commenced at about the same time in both hemispheres. The timing of retreat is consistent with the onset of temperature and atmospheric CO2(More)
STUDY DESIGN An in vitro biomechanical study of cervical spine interbody fusion cages using a sheep model was conducted. OBJECTIVES To evaluate the biomechanical effects of cervical spine interbody fusion cages, and to compare three different cage design groups. SUMMARY AND BACKGROUND DATA Recently, there has been a rapid increase in the use of cervical(More)
A major puzzle of paleoclimatology is why, after a long interval of cooling climate, each late Quaternary ice age ended with a relatively short warming leg called a termination. We here offer a comprehensive hypothesis of how Earth emerged from the last global ice age. A prerequisite was the growth of very large Northern Hemisphere ice sheets, whose(More)
The role of the tropics in triggering, transmitting, and amplifying interhemispheric climate signals remains a key debate in paleoclimatology. Tropical glacier fluctuations provide important insight on regional paleoclimatic trends and forcings, but robust chronologies are scarce. Here, we report precise moraine ages from the Cordillera Vilcabamba (13(More)
Understanding the timings of interhemispheric climate changes during the Holocene, along with their causes, remains a major problem of climate science. Here, we present a high-resolution 10Be chronology of glacier fluctuations in New Zealand's Southern Alps over the past 7000 years, including at least five events during the last millennium. The extents of(More)
INTRODUCTION Due to a recent increase in the commercial availability of expandable cages for vertebral body replacement, this study was designed to gain more information about their biomechanical properties. All three expandable cages evaluated in this study are approved for clinical use, but little knowledge about their biomechanical properties exists. (More)
H. W. Yeom,1,* S. Takeda,2 E. Rotenberg,3 I. Matsuda,4 K. Horikoshi,2 J. Schaefer,5 C. M. Lee,3 S. D. Kevan,5 T. Ohta,4 T. Nagao,2,6 and S. Hasegawa2,6 1Research Center for Spectrochemistry, the University of Tokyo, Tokyo 113-0033, Japan 2Department of Physics, the University of Tokyo, Tokyo 113-0033, Japan 3Advanced Light Source, Lawrence Berkeley National(More)
Millennial-scale cold reversals in the high latitudes of both hemispheres interrupted the last transition from full glacial to interglacial climate conditions. The presence of the Younger Dryas stadial (approximately 12.9 to approximately 11.7 kyr ago) is established throughout much of the Northern Hemisphere, but the global timing, nature and extent of the(More)
Eli Rotenberg, H. Koh, K. Rossnagel, H. W. Yeom, J. Schäfer, B. Krenzer , M. P. Rocha, S. D. Kevan MS 6-2100, Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA. 94720 Institute of Physics and Applied Physics, Yonsei University, 134 Sinchon-dong, Seodaemun-gu, Seoul 120-749, Korea Institute of Physics, University of Augsburg,(More)
We report on the epitaxial fabrication and electronic properties of a topological phase in strained α-Sn on InSb. The topological surface state forms in the presence of an unusual band order not based on direct spin-orbit coupling, as shown in density functional and GW slab-layer calculations. Angle-resolved photoemission including spin detection probes(More)