High-temperature environments of human evolution in East Africa based on bond ordering in paleosol carbonates [PDF]
, 2010 Many important hominid-bearing fossil localities in East Africa are in regions that are extremely hot and dry. Although humans are well adapted to such conditions, it has been inferred that East African environments were cooler or more wooded during the ...
B. H. Passey +13 more
core +2 more sources
Dynamic reservoir-condition microtomography of reactive transport in complex carbonates: effect of initial pore structure and initial brine pH [PDF]
, 2017 We study the impact of brine acidity and initial pore structure on the dynamics of fluid/solid reaction at high Péclet numbers and low Damköhler numbers.
Bijeljic, B, Blunt, M, Menke, HP
core +1 more source
Tetrahedrally coordinated carbonates in Earth's lower mantle
, 2015 Carbonates are the main species that bring carbon deep into our planet through subduction. They are an important rock-forming mineral group, fundamentally distinct from silicates in Earth's crust in that carbon binds to three oxygen atoms, while silicon ...
Boulard, Eglantine +4 more
core +3 more sources
Nitrile-assistant eutectic electrolytes for cryogenic operation of lithium ion batteries at fast charges and discharges [PDF]
, 2014 The charge/discharge characteristics of lithium ion batteries at low temperature (LT = -20 ??C) are enhanced by using ethylene carbonate (EC)-based electrolytes with the help of assistant solvents of nitriles. Conventional liquid electrolytes (e.g.
Abu-Lebdeh +28 more
core +1 more source
The origin of fine scale acoustic stratigraphy in deep-sea carbonates [PDF]
, 1979 In this paper we investigate the origin and geologic significance of the closely spaced high-frequency subbottom acoustic reflectors characteristic of pelagic carbonates.
Mayer, Larry A.
core +2 more sources
Palaeoenvironmental and diagenetic reconstruction of a closed-lacustrine carbonate system - the challenging marginal setting of the Miocene Ries Crater Lake (Germany) [PDF]
, 2017 Chemostratigraphic studies on lacustrine sedimentary sequences provide essential insights on past cyclic climatic events, on their repetition and prediction through time.
Abdul Aziz +95 more
core +1 more source
Can Mg isotopes be used to trace cyanobacteria-mediated magnesium carbonate precipitation in alkaline lakes? [PDF]
, 2011 The fractionation of Mg isotopes was determined during the cyanobacterial mediated precipitation of hydrous magnesium carbonate precipitation in both natural environments and in the laboratory.
Balor, S. +8 more
core +4 more sources
Carbon Nanoparticles-Decorated Carbon Nanotubes [PDF]
Scientific Reports, 2020 AbstractMulti walled carbon nanotubes (MWCNTs) were decorated by activated carbon nanoparticles of resorcinol-formaldehyde aerogels. Carbon nanospheres and MWCNTs were mixed by equal mass ratios for different durations. The products were characterized by Raman spectroscopy, thermal gravimetric analysis, nanoscanning electron microscopy, transmission ...
Ahmed Awadallah-F, Shaheen Al-Muhtaseb
openaire +4 more sources
HeritageThe Rudny Altai is a western segment of the Altai orogenic belt. Its geological richness makes its geoheritage exploration an urgent matter. Investigations in the Loktevsky District (Altai Region, Russian Federation) have led to the finding of three ...
Jaroslav M. Gutak, Dmitry A. Ruban
doaj +1 more source
Geosciences, 2019 In this paper, the thermal decomposition kinetics of a class of minerals that we call White Soft Minerals (WSMs) is studied by means of theoretical and experimental methods, in connection to the transport of extraterrestrial organic matter to Earth and ...
Gaia Micca Longo +5 more
doaj +1 more source