Results 91 to 100 of about 73,435 (259)

Quantifying the timescales of fluid-rock interaction on Mars using the nakhlite meteorites [PDF]

open access: yes, 2013
Etch pits within olivine grains from the nakhlite meteorites reveal the magnitude and timescale of water-mediated alteration of the martian ...
Lee, M.R.   +4 more
core  

Mikrometeorite und ihr Ursprung im Sonnensystem: Außerirdischer Staub zum Anfassen

open access: yesPhysik in unserer Zeit, EarlyView.
Mit einer Größe, die der Dicke eines Haares entspricht, sind Mikrometeorite kaum sichtbar für das bloße Auge. Dennoch werden sie seit etwa 150 Jahren gesammelt, und seit wenigen Jahren sogar auf unseren Hausdächern. Als Kostproben von Asteroiden oder Kometen stellen sie wertvolle Boten unseres Sonnensystems dar.
Jenny Feige
wiley   +1 more source

Phosphorus Coupling Obfuscates Lithium Geospeedometry in Olivine

open access: yesFrontiers in Earth Science, 2020
Lithium zoning in zircon and olivine provides a powerful record of crystal histories and magmatic processes in volcanic systems. Characterizing Li behavior in olivine is important because it is one of the few elements in basaltic systems that track short-
Kendra J. Lynn   +2 more
doaj   +1 more source

Lecanicillium aphanocladii: a biocontrol agent against insect pests and phytopathogens

open access: yesPest Management Science, EarlyView.
Recent research findings on the biocontrol potential of Lecanicillium aphanocladii fungus against insect‐pests and plant diseases were highlighted. This review indicates that several L. aphanocladii strains show great potential to be developed as multipurpose biocontrol agents active against several insect‐pests, plant diseases and plant parasitic ...
Qianhe Liu   +2 more
wiley   +1 more source

Mafic alkaline metasomatism in the lithosphere underneath East Serbia: evidence from the study of xenoliths and the host alkali basalts [PDF]

open access: yes, 2010
Effects of mafic alkaline metasomatism have been investigated by a combined study of the East Serbian mantle xenoliths and their host alkaline rocks.
Cvetkovic, V.   +4 more
core   +1 more source

Reduction, Softening, and Melting Characteristics of Mill Scale‐Based Briquettes for Blast Furnace Ironmaking

open access: yessteel research international, EarlyView.
The study evaluates mill scale‐based briquettes, which meet industrial standards for shatter strength and exhibit a low decrepitation index. Despite their limited reducibility in nonisothermal reduction experiments, softening and melting results indicate potential application as a substitute for conventional acidic iron‐bearing materials for use in ...
Ismael Vemdrame Flores   +4 more
wiley   +1 more source

Comparative effects of olivine and sand on KOH-treated clayey soil

open access: yesOpen Geosciences
Improving the strength of clayey soils remains a key concern in geotechnical practice. This study presents a comparative investigation of the effects of olivine waste and sand grains on a clayey soil, both in the absence and presence of potassium ...
Tahir Abdelmaoula Mahamoud   +5 more
doaj   +1 more source

The Absence of Cold Dust and the Mineralogy and Origin of the Warm Dust Encircling BD +20 307

open access: yes, 2010
Spitzer Space Telescope photometry and spectroscopy of BD +20 307 show that all of the dust around this remarkable Gyr-old spectroscopic binary arises within 1 AU. No additional cold dust is needed to fit the infrared excess.
Becklin, E. E.   +3 more
core   +1 more source

The Significance of Multiple Saturation Points in the Context of Polybaric Near-fractional Melting [PDF]

open access: yes, 2004
Experimental petrologists have successfully located basaltic liquid compositions parental to mid-ocean ridge basalt that are, within experimental resolution, multiply saturated with three-phase harzburgite or four-phase lherzolite assemblages on their ...
Asimow, Paul D., Longhi, John
core   +2 more sources

Modeling the Thermal Properties of Hydrogen‐Based Direct Reduced Iron Using Computational Thermodynamics and Machine Learning

open access: yessteel research international, EarlyView.
Hydrogen‐based direct reduced iron (H‐DRI) melts differently from scrap and carbon‐bearing DRI. This work combines differential scanning calorimetry experiments, FactSage thermodynamics, and simple composition‐based regression to predict solidus, liquidus, heat capacity, and enthalpy for H‐DRI.
Ankur Agnihotri   +3 more
wiley   +1 more source

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