نتایج جستجو برای: alkalian earth metals

تعداد نتایج: 153614  

2005
K. Ichiki G. J. Mathews

K. Ichiki, M. Yahiro, T. Kajino, M. Orito, and G. J. Mathews National Astronomical Observatory, 2-21-1, Osawa, Mitaka, Tokyo 181-8588, Japan University of Tokyo, Department of Astronomy, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan Department of Physics and Earth Sciences, University of the Ryukyus, Nishihara-chou, Okinawa 903-0213, Japan and Center for Astrophysics, Department of Physics, Uni...

2015
Sherilyn C. Fritz Bruce E. Brinson W. E. Billups Lonnie G. Thompson

Department of Earth and Atmospheric Sciences and School of Biological Sciences, 214 Bessey Hall, University of Nebraska–Lincoln, Lincoln, Nebraska 68588-0340, U.S.A. Department of Chemistry and Richard E. Smalley Institute for Nanoscale Science and Technology, Rice University, 6100 South Main Street, Houston, Texas 77005, U.S.A. Byrd Polar and Climate Research Center and School of Earth Science...

2007
Georg Zellmer David Pyle

Introduction MAG2007 was the first international workshop devoted to bringing together igneous and gas geochemists working on volcanology-related topics. It was held at the Institute of Earth Sciences, Academia Sinica, and at Taiwan’s East Coast, from 22 to 27 April 2007, and hosted an international group of some 45 leading experts and students of volcanology and igneous and gas geochemistry. T...

1998
G. H. Miller J. W. Magee M. L. Fogel M. K. Gagan

Detecting human impacts on the flora, fauna, and summer monsoon of Pleistocene Australia G. H. Miller, J. W. Magee, M. L. Fogel, and M. K. Gagan INSTAAR and Dept. of Geological Sciences, University of Colorado, Boulder, CO 80309-0450, USA Department of Earth and Marine Sciences, Australian National University, Canberra, ACT 0200, Australia Geophysical Laboratory, Carnegie Institution of Washing...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2005
ahmad shaabani ayoob bazgir sakineh arab ameri masoumeh sharifi kiasaraie sima samadi

alkali and alkaline earth metals hydrogen sulfate catalyzed the one-pot three component condensation reactions of aldehydes, 1,3-dicarbonyl compounds and urea or thiourea under solvent-free conditions leading to 3,4-dihydropyrimidin-2(1h)-ones in high yields at 80 °c. our results showed that biginelli reaction not only is ph dependent, but the cation of catalyst plays an important role.

2013
Fernando Camara G. dieGo Gatta dmitriy Belakovskiy dorian G.W. smith

1Dipartimento di Scienze della Terra, Università di degli Studi di Torino, Via Valperga Caluso, 35-10125 Torino, Italy 2Dipartimento Scienze della Terra, Università degli Studi di Milano, Via Botticelli, 23-20133 Milano, Italy 3Fersman Mineralogical Museum, Russian Academy of Sciences, Moscow 119071, Russia 4Department of Earth and Atmospheric Sciences, 1-26 Earth Sciences Building, University ...

2015
Laura Airoldi Xavier Turon Shimrit Perkol-Finkel Marc Rius

Dipartimento di Scienze Biologiche, Geologiche ed Ambientali, University of Bologna, Via S. Alberto 163, I-48123 Ravenna, Italy, Hopkins Marine Station, Stanford University, Pacific Grove, CA 93950, USA, Center for Advanced Studies of Blanes (CEAB-CSIC), Acc es a la Cala S. Francesc 14, 17300, Blanes (Girona), Spain, SeArc Ecological Marine Consulting, 13 Namirover St., Tel Aviv 69713, Israel, ...

2005
A. C. V. Caltabiano I. S. Robinson L. P. Pezzi

Multi-year satellite observations of instability waves in the Tropical Atlantic Ocean A. C. V. Caltabiano, I. S. Robinson, and L. P. Pezzi Laboratory for Satellite Oceanography, Southampton Oceanography Centre, European Way, Southampton, SO14 3ZH, United Kingdom School of Ocean and Earth Science, Southampton Oceanography Centre, European Way, Southampton, SO14 3ZH, United Kingdom Centro de Prev...

2002
Eric Debayle Malcolm Sambridge

correlation between r i and each geographical point r j belonging to path j (Fig.1 b) : Continuous regionalization for massive surface waves dataset Eric Debayle 1 and Malcolm Sambridge Institut de physique du globe de Strasbourg, CNRS and Université Louis Pasteur, Strasbourg, France ([email protected]) Research School of Earth Science, Australian National University, Canberra, Aus...

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