Results 21 to 30 of about 91,402 (192)

CaSiO3 perovskite at lower mantle pressures [PDF]

, 2005
We investigate by first-principles the structural behavior of CaSiO3 perovskite up to lower mantle pressures. We confirm that the cubic perovskite modification is unstable at all pressures.
Brodholt, J, Caracas, R, Price, GD, Wentzcovitch, R   +3 more
core   +1 more source

How Do SMEs Respond to Deglobalization? Insights from Italian SMEs in the Interwar Period (1936–1943)

Journal of Management Studies, EarlyView.
Abstract This study investigates how small and medium‐sized enterprises (SMEs) respond to deglobalization and economic nationalism, using historical evidence from fascist Italy, a period of autarky and restricted international trade. While prior research has focused primarily on larger firms, especially multinational enterprises (MNEs), the strategic ...
Valeria Giacomin, Francesco Romagnoli
wiley   +1 more source

Effect of metformin drug on zinc and magnesium levels in women with polycystic ovary syndrome

Gaceta Médica Boliviana
Polycystic ovary syndrome involves oligomenorrhea and/ or anovulation due to excess testosterone or LH, in addition to metabolic disorders that may result in decreased levels of important vitamins and minerals, including Zinc and Magnesium levels ...
Manal Abdulmunem Ibrahim
doaj   +1 more source

Cooling‐Induced Rheological Weakening Along the Nascent Plate Interface—A Mechanism for Catastrophic Subduction Initiation?

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 1, January 2026.
Abstract Subduction initiation often begins with slow, forced convergence, switches “on” catastrophically as the slab collapses into the mantle, and then evolves to steady‐state, self‐sustained sinking that drives global plate movements. Numerical models suggest that the collapse phase implies sudden weakening of the plate interface.
Alissa J. Kotowski, Caroline E. Seyler, James D. Kirkpatrick, Douwe J. J. van Hinsbergen   +3 more
wiley   +1 more source

The Transition From Melt Accumulation to Eruption Initiation Recorded by Orthopyroxene Fe‐Mg Diffusion Timescales in Late Holocene Rhyolites, South Sister Volcano, Oregon Cascade Range

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 12, December 2025.
Abstract South Sister volcano, Oregon Cascade Range, USA, has repeatedly erupted rhyolite since ca. 40 ka. The youngest such eruptions are the ca. 2 ka Rock Mesa and Devils Chain rhyolites, erupted several hundred years apart from two multi‐vent complexes separated by 3–6 km. Fe‐Mg interdiffusion models of orthopyroxene rims from both rhyolites produce
Nathan L. Andersen, Annika E. Dechert, Dawn C. S. Ruth, May (Mai) Sas, Julie Chouinard, Josef Dufek   +5 more
wiley   +1 more source

Magnesio, catión esencial. Una revisión narrativa de la ingesta y recomendaciones de ingesta en varios continentes y en Venezuela

Archivos Latinoamericanos de Nutrición
Introducción. El magnesio es esencial para diversas funciones biológicas. La ausencia de biomarcadores específicos hace de su determinación un desafío.
Lusliany J Rondón
doaj   +1 more source

Génesis de arcillas magnésicas en la cuenca de Madrid: interrogantes planteados [PDF]

, 2004
La cuenca de Madrid es excepcionalmente rica en arcillas magnésicas (sepiolita, paligorskita, saponita y estevensita), las cuales para formarse requieren elevada actividad de silicio y magn esio, a la vez que pH alcalinos, siendo típicas de medios ...
García Romero, Emilia
core   +1 more source

Can Multiphase Inclusions in Garnet From Eclogite Facies Rocks Be a Product of Melt or Supercritical Fluid Entrapment During Subduction?

Journal of Metamorphic Geology, Volume 43, Issue 9, Page 891-908, December 2025.
ABSTRACT Dehydration of rocks and minerals during high‐pressure metamorphism is controlled by the thermal structure of the subduction zone and can be traced by the stability fields of hydrous phases. Consistent with the results of experimental works, the content of silicate components in fluids is assumed to increase from the fields of subcritical to ...
Shah Wali Faryad
wiley   +1 more source

Radiogenic Heating as the Thermal Driver of Himalayan Crustal Heating During Prolonged Thickening

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 11, November 2025.
Abstract The thermal evolution of the crust during continental collision evolves from cold to hot with time, which impacts crustal reworking and differentiation. However, it remains elusive as to the mechanism driving the crust to be hot during the protracted collision.
Shuaiqi Liu, Guibin Zhang, Lifei Zhang, Shuzhen Wang, Feng Chang   +4 more
wiley   +1 more source

Reducción de color con cloruro de magnesio en soluciones con colorantes comerciales [PDF]

, 2017
Se experimentó con diferentes concentraciones de cloruro de magnesio (MgCl2) como coagulante para reducir el color en soluciones con colorantes comerciales: negro, azul y café.
ESPARZA SOTO, MARIO, ESPARZA SOTO, MARIO, GARCIA PULIDO, DAURY, GARCIA PULIDO, DAURY, JIMENEZ MOLEON, MARIA DEL CARMEN, JIMENEZ MOLEON, MARIA DEL CARMEN, LUCERO CHAVEZ, MERCEDES, LUCERO CHAVEZ, MERCEDES, 246222, ROJAS REYES, SAHARA GABRIELA, ROJAS REYES, SAHARA GABRIELA   +9 more
core   +4 more sources