Results 21 to 30 of about 424,128 (342)
Seeking a geochemical identifier for authigenic carbonate
Nature Communications, 2016 Distinguishing between authigenic carbonate and primary marine carbonate is fundamental to our understanding of Earth’s carbon, oxygen and calcium cycles.
Ming-Yu Zhao +2 more
doaj +1 more source
Acute effect of detergent on lipid alteration in freshwater gastropod Bellamya bengalensis (Lamarck)
Environment Conservation Journal, 2013 The freshwater gastropod Bellamya bengalensis exposed to 69.18ppm concentration of detergent (Tide) on lipid content in the tissue of foot, mantle and digestive glands for 96 hours exposure.
P. Raghava Kumari
doaj +1 more source
Pulsated Global Hydrogen and Methane Flux at Mid‐Ocean Ridges Driven by Pangea Breakup
Geochemistry, Geophysics, Geosystems, 2020 Molecular hydrogen production occurs through the serpentinization of mantle peridotite exhumed at mid‐ocean ridges. Hydrogen is considered essential to sustain microbial life in the subsurface; however, estimates of hydrogen flux through geological time ...
Andrew S. Merdith +5 more
doaj +1 more source
Rare earth element characteristics of pyrope garnets from the Kaavi-Kuopio kimberlites - implications for mantle metasomatism [PDF]
Bulletin of the Geological Society of Finland, 2005 Peridotitic garnet xenocrysts from five kimberlite pipes in the Kaavi-Kuopio area of eastern Finland have been studied using major and trace element geochemistry to obtain information on the stratigraphy, compositional variability and evolutionary ...
M. Lehtonen
doaj +1 more source
The effect of the mantle and core matter phase state on the course of geodynamic processes
Геофизический журнал, 2023 The study of the course of geodynamic processes in the lower crust and upper mantle proves that an additional energy contribution is made by a change in the phase state of matter with increasing pressure and temperature.
O.V. Usenko
doaj +1 more source
Matter Enhanced Neutrino Oscillations with a Realistic Earth Density Profile [PDF]
, 2000 We have investigated matter enhanced neutrino oscillations with a mantle-core-mantle step function and a realistic Earth matter density profile in both a two and a three neutrino scenario.
Ermilova V. K. +5 more
core +2 more sources
Molecules, 2019 Skin wound healing, especially chronic wound healing, is a common challenging clinical problem. It is urgent to broaden the sources of bioactive substances that can safely and efficiently promote skin wound healing.
Faming Yang +4 more
doaj +1 more source
Frontiers in Marine Science, 2022 The biosynthesis of shell is a complicated calcification process in the marine bivalve, which can be severely impacted by ocean acidification (OA). Calmodulin (CaM) is a pivotal calcium regulator and thought to be crucial for calcification.
Xiaoyu Xin +25 more
doaj +1 more source
The Origin of Earth's Mantle Nitrogen: Primordial or Early Biogeochemical Cycling?
Geochemistry, Geophysics, Geosystems, 2022 Earth's mantle nitrogen (N) content is comparable to that found in its N‐rich atmosphere. Mantle N has been proposed to be primordial or sourced by later subduction, yet its origin has not been elucidated.
H. Kurokawa +7 more
doaj +1 more source
Horizontal mantle flow controls subduction dynamics [PDF]
, 2017 It is generally accepted that subduction is driven by downgoing-plate negative buoyancy. Yet plate age –the main control on buoyancy– exhibits little correlation with most of the present-day subduction velocities and slab dips. “West”-directed subduction
Dal Zilio, Luca +3 more
core +1 more source