نتایج جستجو برای: rare metals
تعداد نتایج: 301425 فیلتر نتایج به سال:
Olaf A. Cirpka*, Emil O. Frind & Rainer Helmig Institut f ur Wasserbau, Universit at Stuttgart, Pfaenwaldring 61, 70569 Stuttgart, Germany Department of Earth Sciences, University of Waterloo, Waterloo, ON N2L 3G1, Canada Department of Civil and Environmental Engineering, Stanford University, Stanford, CA 94305-4020, USA Institut f ur Computeranwendungen im Bauingenieurwesen, Technische Uni...
a Department of Oceanfloor Network System Development for Earthquakes and Tsunamis (DONET), Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokohama 236-0001, Japan b Seismological Laboratory, California Institute of Technology, Pasadena, California 91125-2100, USA c Research Center for Prediction of Earthquakes and Volcanic Eruptions, Graduate School of Science, Tohoku Universi...
Preliminary Results. J. Urrutia-Fucugauchi 1 ([email protected]), L. Pérez-Cruz 1 , M. RebolledoVieyra 2 , S.M. Tikoo 3 , W. Zylberman 4,5 and IODP-ICDP Expedition 364 Science Party. 1 Instituto de Geofísica, Universidad Nacional Autónoma de México, Coyoacan, Ciudad de México 04510, México. 2 Centro de Investigación, Científica de Yucatán, Cancún, Quintana Roo 77500, México. 3 Department of...
E. R. C. Hornibrook, H. L. Bowes, A. Culbert, and A. V. Gallego-Sala Bristol Biogeochemistry Research Centre, Department of Earth Sciences, University of Bristol, Wills Memorial Building, Queens Road, Bristol, BS8 1RJ, UK Received: 4 March 2008 – Accepted: 29 March 2008 – Published: 18 June 2008 Correspondence to: E. R. C. Hornibrook ([email protected]) Published by Copernicus Publica...
We show a correlation between the occurrence of shallow thrust earthquakes and the occurrence of the strongest tides. The rate of earthquakes varies from the background rate by a factor of 3 with the tidal stress. The highest correlation is found when we assume a coefficient of friction of mu = 0.4 for the crust, although we see good correlation for mu between 0.2 and 0.6. Our results quantify ...
Until recently, large apex consumers were ubiquitous across the globe and had been for millions of years. The loss of these animals may be humankind's most pervasive influence on nature. Although such losses are widely viewed as an ethical and aesthetic problem, recent research reveals extensive cascading effects of their disappearance in marine, terrestrial, and freshwater ecosystems worldwide...
Samarium-neodymium isotopic data on whole rocks and minerals of the Sudbury Complex in Canada gave an igneous crystallization age of 1840 +/- 21 x 10(6) years. The initial epsilon neodymium values for 15 whole rocks are similar to those for average upper continental crust, falling on the crustal trend of neodymium isotopic evolution as defined by shales. The rare earth element concentration pat...
The standard enthalpy of formation of a compound is the energy associated with the reaction to form the compound from its component elements. The standard enthalpy of formation is a fundamental thermodynamic property that determines its phase stability, which can be coupled with other thermodynamic data to calculate phase diagrams. Calorimetry provides the only direct method by which the standa...
(1) Northwest A&F University, College of Forestry, Yangling, China ([email protected]), (2) Department of Biological Sciences, Macquarie University, North Ryde, NSW 2109, Australia, (3) AXA Chair Programme in Biosphere and Climate Impacts, Department of Life Sciences, Imperial College London, Silwood Park Campus, Buckhurst Road, Ascot SL5 7PY, UK, (4) United States Department of Agriculture...
Bacterial cell walls – Promoters and inhibitors of mineral nucleation T. BEHRENDS*, A. SCHEINOST, S. SHAW, L. BENNING AND P. VAN CAPPELLEN Department of Earth Sciences, Utrecht University, 3508 TA, Utrecht, The Netherlands (*correspondence: [email protected]) Synchrotron Applications Devision, Research Center Rossendorf, 01314 Dresden, Germany School of Earth and Environment, University of Lee...
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