Results 21 to 30 of about 454,449 (380)
dragon: A New Tool for Exploring Redox Evolution Preserved in the Mineral Record
Frontiers in Earth Science, 2020 The flow of energy and elements between the geosphere and biosphere can be traced through changing redox chemistry of Earth’s surface. Deep-time trends in the mineral record, including mineral age and elemental composition, reveal a dynamic history of ...
Stephanie J. Spielman, Eli K. Moore
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Light scattering and absorption properties of dust particles retrieved from satellite measurements [PDF]
, 2008 We use the radiative transfer model and chemistry transport model to improve our retrievals of dust optical properties from satellite measurements. The optical depth and absorbing optical depth of mineral dust can be obtained from our improved retrieval ...
Hu, R-M., Sokhi, R.S.
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Scientific Reports, 2021 Syntheses of Nd2Fe14B magnetic powder by conventional method is a complicated multi-step process, which produces harmful pollutants and consumes a huge amount of energy and resources. Herein we report a simple chemical route for the preparation of (Nd–Pr)
Syed Kamran Haider +4 more
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Removal of diesel pollution by biochar - support in water remediation [PDF]
Hemijska Industrija, 2021 Water contaminated with diesel oil represents one of the greatest challenges in waste water management. Water soluble fraction (WSF) is of particular interest because of its toxicity to aquatic organisms and discharge regulations set by environmental ...
Lopičić Zorica +6 more
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Spin-Frustrated Pyrochlore Chains in the Volcanic Mineral Kamchatkite (KCu3OCl(SO4)2) [PDF]
Physics and Chemistry of Minerals, 45(7), 655-668 (2018), 2017 Search of new frustrated magnetic systems is of a significant importance for physics studying the condensed matter. The platform for geometric frustration of magnetic systems can be provided by copper oxocentric tetrahedra (OCu4) forming the base of crystalline structures of copper minerals from Tolbachik volcanos in Kamchatka.
arxiv +1 more source
Soil bacterial communities of a calcium-supplemented and a reference watershed at the Hubbard Brook Experimental Forest (HBEF), New Hampshire, USA [PDF]
, 2011 Soil Ca depletion because of acidic deposition-related soil chemistry changes has led to the decline of forest productivity and carbon sequestration in the northeastern USA. In 1999, acidic watershed (WS) 1 at the Hubbard Brook Experimental Forest (HBEF),
Brodie, Eoin L. +6 more
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Carbon mineralization and microbial activity in agricultural topsoil and subsoil as regulated by root nitrogen and recalcitrant carbon concentrations [PDF]
, 2018 Aims Mechanisms of subsoil carbon sequestration from deep-rooted plants are elusive, but may contribute to climate change mitigation. This study addressed the role of root chemistry on carbon mineralization and microbiology in a temperate agricultural ...
Elsgaard, Lars +4 more
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Anais da Academia Brasileira de Ciências, 2007 Gahnite electron probe microanalyses from three pegmatites (Mirador, Capoeira and Quintos) of the Borborema Pegmatitic Province in northeastern Brazil allowed to determine molar compositions ranging from 86.22 to 95.41 mol% gahnite (ZnAl2O4), 1.51 to 6 ...
Dwight R. Soares +3 more
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Quantum Magnetism in Minerals [PDF]
Adv. Phys. 67, 149-252 (2018), 2018 The discovery of magnetism by the ancient Greeks was enabled by the natural occurrence of lodestone -- a magnetized version of the mineral magnetite. Nowadays, natural minerals continue to inspire the search for novel magnetic materials with quantum-critical behavior or exotic ground states such as spin liquids. The recent surge of interest in magnetic
arxiv +1 more source
Nano dimensional hybrid organo-clay Langmuir-Blodgett films [PDF]
Current Physical Chemistry 3(3) (2013) 322-332, 2014 Clay mineral particles are interesting nanosized building blocks due to their high aspect ratio and the chemical properties. The main interest in this nanosized building blocks results essentially from the colloidal size and the permanent structural charge of the particles.
arxiv +1 more source