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Articles 51841 - 51870 of 294660
Full-Text Articles in Physical Sciences and Mathematics
Single-Crystal Elasticity Of Earth’S Mantle Transition Zone Minerals And High Pressure-Temperature Phase Equilibrium Experiments On Martian Basalts, Wenyi Zhou
Earth and Planetary Sciences ETDs
Wadsleyite and ringwoodite are major minerals in the Earth’s Mantle Transition Zone. Global and local seismic studies have detected strong lateral variations in seismic velocity and anisotropy in the Mantle Transition Zone, reflecting temperature and possible composition variations. Interpretation of these seismic observations requires knowledge of thermoelastic properties of wadsleyite and ringwoodite with different compositions (water and Fe contents) under high pressure-temperature conditions. In this dissertation, we have measured single-crystal elastic properties of wadsleyite and ringwoodite under high pressure-temperature conditions by Brillouin spectroscopy. Based on our measurements and previous experimental results, we further model the effects of water and Fe …
Mgrre_Thinsections_Mgrre-98_3, Mgrre
Mgrre_Thinsections_Mgrre-98_7, Mgrre
Mgrre_Thinsections_Mgrre-98_8, Mgrre
Mgrre_Thinsections_Mgrre-93_7, Mgrre
The Significance Of Cephalopod Beaks As A Research Tool: An Update, José C. Xavier, Alexey V. Golikov, José P. Queirós, Catalina Perales-Raya, Rigoberto Rosas-Luis, José Abreu, Giambattista Bello, Paco Bustamante, Juan C. Capaz, Valerie H. Dimkovikj, Angel F. González, Hugo Guímaro, Airam Guerra-Marrero, José N. Gomes-Pereira, Jorge Hernández-Urcera, Tsunemi Kubodera, Vladimir Laptikhovsky, Evgenia Lefkaditou, Fedor Lishchenko
The Significance Of Cephalopod Beaks As A Research Tool: An Update, José C. Xavier, Alexey V. Golikov, José P. Queirós, Catalina Perales-Raya, Rigoberto Rosas-Luis, José Abreu, Giambattista Bello, Paco Bustamante, Juan C. Capaz, Valerie H. Dimkovikj, Angel F. González, Hugo Guímaro, Airam Guerra-Marrero, José N. Gomes-Pereira, Jorge Hernández-Urcera, Tsunemi Kubodera, Vladimir Laptikhovsky, Evgenia Lefkaditou, Fedor Lishchenko
Marine Science
The use of cephalopod beaks in ecological and population dynamics studies has allowed major advances of our knowledge on the role of cephalopods in marine ecosystems in the last 60 years. Since the 1960’s, with the pioneering research by Malcolm Clarke and colleagues, cephalopod beaks (also named jaws or mandibles) have been described to species level and their measurements have been shown to be related to cephalopod body size and mass, which permitted important information to be obtained on numerous biological and ecological aspects of cephalopods in marine ecosystems. In the last decade, a range of new techniques has been …
Mgrre_Thinsections_Mgrre-88_57, Mgrre
Mgrre_Thinsections_Mgrre-88_60, Mgrre
Mgrre_Thinsections_Mgrre-88_76, Mgrre
Mgrre_Thinsections_Mgrre-89_7, Mgrre
Mgrre_Thinsections_Mgrre-93_6, Mgrre
Mgrre_Thinsections_Mgrre-95_5, Mgrre
Mgrre_Thinsections_Mgrre-96_11, Mgrre
Mgrre_Thinsections_Mgrre-96_19, Mgrre
Mgrre_Thinsections_Mgrre-95_12, Mgrre
Mgrre_Thinsections_Mgrre-94_5, Mgrre
Mgrre_Thinsections_Mgrre-94_12, Mgrre
Mgrre_Thinsections_Mgrre-96_22, Mgrre
Mgrre_Thinsections_Mgrre-100_7, Mgrre
Mgrre_Thinsections_Mgrre-88_40, Mgrre
Mgrre_Thinsections_Mgrre-88_54, Mgrre
Mgrre_Thinsections_Mgrre-97_2, Mgrre
Mgrre_Thinsections_Mgrre-89_90, Mgrre
Mgrre_Thinsections_Mgrre-93_8, Mgrre
Mgrre_Thinsections_Mgrre-94_7, Mgrre
Mgrre_Thinsections_Mgrre-94_8, Mgrre
Mgrre_Thinsections_Mgrre-96_4, Mgrre
Mgrre_Thinsections_Mgrre-98_6, Mgrre