Results 51 to 60 of about 1,311,765 (395)

Multiple Twinning in Nacre and Aragonite

open access: yesAdvanced Functional Materials, EarlyView.
Electron backscatter diffraction map of a cluster of geologic aragonite, exhibiting single, double, and triple twins. The whole cluster is approximately 2 cm wide. Colors indicate crystal orientations, so that pixels where the a‐, b‐, and c‐axis is perpendicular to the image plane are green, red, and blue, respectively.
Connor A. Schmidt   +7 more
wiley   +1 more source

Formation of silicic crust on early Earth and young planetary bodies in an Iceland-like setting

open access: yesCommunications Earth & Environment
Four billion years ago, Earth’s surface was covered with a thick basaltic crust and, similar to other rocky planets and the Moon, parts of this basaltic crust underwent partial melting to produce silicic crust.
Sally Law   +3 more
doaj   +1 more source

Analysis of groundwater ion abnormality and its cause of centralized drinking water sources in Jieshou City, China

open access: yesFrontiers in Environmental Science, 2023
Groundwater provides drinking water to city and rural residents; which is also one of the chief water sources for commercial and agricultural activities in Jieshou City.
Guifen Su   +4 more
doaj   +1 more source

From Waste to Value: Conversion of Calcium Sulfate to Vaterite via Carbon Capture and Storage

open access: yesAdvanced Functional Materials, EarlyView.
This study introduces a new concept for carbon management that relies on the carbonation of industrial gypsum waste and yields phase‐pure vaterite at ambient conditions without any additives. The obtained vaterite is further shown to be a reactive material that develops compressive strength in aqueous suspensions like conventional cements.
Carlos Pimentel   +4 more
wiley   +1 more source

Geophysical and geochemical constraints on geoneutrino fluxes from Earth's mantle [PDF]

open access: yes, 2012
Knowledge of the amount and distribution of radiogenic heating in the mantle is crucial for understanding the dynamics of the Earth, including its thermal evolution, the style and planform of mantle convection, and the energetics of the core.
Allègre   +46 more
core   +2 more sources

Laser‐Induced Microfabrication of Carbon Nanostructure: Processing Mechanism and Application for Next‐Generation Battery Technology

open access: yesAdvanced Functional Materials, EarlyView.
The article reviews laser‐processed carbons from various precursors, processing mechanism and their application in advanced batteries. The laser process is chemical free, fast, and scalable, enabling improved battery performance and stability for Li, Na, and Zn battery technologies.
Sujit Deshmukh   +2 more
wiley   +1 more source

Electromagnetic-deformational waves of the Earth crust

open access: yesГеофизический журнал, 2016
This article briefly analyzes mechanisms of mechanoelectromagnetic transformations of the earth’s crust. It demostrates that the presence of these effects leads to the appearance of electromagnetic satellites, which are secondary electromagnetic waves ...
V.N. Uvarov
doaj   +1 more source

Effects of Ion Characteristics on the Leaching of Weathered Crust Elution-Deposited Rare Earth Ore

open access: yesFrontiers in Chemistry, 2020
To reveal the ion-exchange mechanism in the leaching process of weathered crust elution-deposited rare earth ores with different leaching agents, the effects of a variety of cations and anions at different concentrations on the leaching process were ...
Zhenyue Zhang   +5 more
doaj   +1 more source

Carbon in soils [PDF]

open access: yes, 2009
Carbon is the fourth most common element in the galaxy(by mass) but does not even rank in the twelve most abundant elements on Earth. By far the most abundant source of carbon on Earth is in the crust as inorganic rocks such as calcite and limestone in ...
Schipper, Louis A., Sparling, Graham P.
core   +1 more source

Modeling pN2 through Geological Time: Implications for Planetary Climates and Atmospheric Biosignatures [PDF]

open access: yes, 2016
Nitrogen is a major nutrient for all life on Earth and could plausibly play a similar role in extraterrestrial biospheres. The major reservoir of nitrogen at Earth's surface is atmospheric N2, but recent studies have proposed that the size of this ...
Buick, R.   +5 more
core   +2 more sources

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