Výsledky vyhledávání - "CALCITE"

Featured Cover Autor Leberecht, Kerstin M., Ritter, Simon M., Lapp, Christian J., Klose, Lukas, Eschenröder, Julian, Scholz, Christian, Kühnel, Sebastian, Stinnesbeck, Wolfgang, Kletzin, Arnulf, Isenbeck‐Schröter, Margot, Gescher, Johannes

“…Cover Caption: The cover image is based on the Research Article Microbially promoted calcite precipitation in the pelagic redoxcline: Elucidating the formation…”
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TWINNED CALCITE FROM THE PALMAREJO MINE Autor Miller, Duncan

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Relationship of seasonal variations in drip water [delta].sup.13C.sub.DIC, [delta].sup.18O, and trace elements with surface and physical cave conditions of La Vallina cave, NW Spain Autor Kost, Oliver, González-Lemos, Saúl, Rodríguez-Rodríguez, Laura, Sliwinski, Jakub, Endres, Laura, Haghipour, Negar, Stoll, Heather

“…Cave-monitoring studies clarify the climatic, surface vegetation, and karst processes affecting the cave system and lay the foundation for interpreting…”
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Wettability of rock/CO 2 /brine and rock/oil/CO 2 -enriched-brine systems:Critical parametric analysis and future outlook Autor Arif, Muhammad, Abu-Khamsin, Sidqi A, Iglauer, Stefan

“…CO geo-sequestration is a promising technology to permanently store CO in geological formations to control the atmospheric carbon footprint. In addition, CO is…”
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The impact of outgassing of CO2 and prior calcium precipitation to the isotope composition of calcite precipitated on stalagmites. Implications for reconstructing climate information from proxies Autor Dreybrodt, Wolfgang, Fohlmeister, Jens

“…Degassing of CO2 and precipitation of calcite to the surface of stalagmites can strongly impact isotope signals imprinted into the calcite of these…”
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Weichselzeitliche Kryocalcite als Hinweise für Eisseen in der Hüttenbläserschachthöhle (Iserlohn/NRW) Autor Richter, Detlev K., Goll, Kristina, Grebe, Witold, Niedermayr, Andrea, Platte, Alexander, Scholz, Denis

“…Die C/O-Isotopenzusammensetzung von Speläothemen der Makkaronihalle der Hüttenbläserschachthöhle in Iserlohn belegt eine klare Trennung zwischen kalt- und…”
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Highly efficient flotation separation of wolframite from calcite using a dual-ligand hydroxamic acid collector: Experiment insight and mechanism exploration Autor Ma, Jinpeng, Huang, Zhiqiang, Safarov, Sayfidin, Xu, Fengping, Che, Wenfang, Yang, Xiaowen, Peng, Jianping, Zhong, Hong, Chen, Xiangping, Wang, Hongling, Ma, Xin, Cheng, Chen, Zhang, Shiyong

“…Aiming at the problems of traditional collectors in the flotation of tungsten ore, such as weak collecting ability for wolframite and difficulty in effective…”
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Hydrogen wettability of carbonate formations: Implications for hydrogen geo-storage Autor Hosseini, Mirhasan, Fahimpour, Jalal, Ali, Muhammad, Keshavarz, Alireza, Iglauer, Stefan

“…[Display omitted] •Hydrogen wettability increases with pressure, organic surface concentration, and salinity.•Hydrogen wettability decreases with temperature…”
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Clumped-isotope palaeothermometry and LA-ICP-MS U–Pb dating of lava-pile hydrothermal calcite veins Autor MacDonald, J. M., Faithfull, J. W., Roberts, N. M. W., Davies, A. J., Holdsworth, C. M., Newton, M., Williamson, S., Boyce, A., John, C. M.

“…Calcite veins are a common product of hydrothermal fluid circulation. Clumped-isotope palaeothermometry is a promising technique for fingerprinting the…”
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Raman spectroscopy as a tool for magnesium estimation in Mg‐calcite Autor Borromeo, Laura, Zimmermann, Udo, Andò, Sergio, Coletti, Giovanni, Bersani, Danilo, Basso, Daniela, Gentile, Paolo, Schulz, Bernhard, Garzanti, Eduardo

“…Despite their strong Raman scattering and importance in several applications in the geological and biological sciences, Mg‐calcites have not been thoroughly…”
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Fracture initiation and propagation of supercritical carbon dioxide fracturing in calcite-rich shale: A coupled thermal-hydraulic-mechanical-chemical simulation Autor Wu, Lin, Hou, Zhengmeng, Xie, Yachen, Luo, Zhifeng, Xiong, Ying, Cheng, Long, Wu, Xuning, Chen, Qianjun, Huang, Liangchao

“…The initiation and propagation mechanisms of supercritical carbon dioxide (scCO2) fracturing are more complex than those of hydraulic fracturing in…”
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Bio-cementation of sand using enzyme-induced calcite precipitation: Mechanical behavior and microstructural analysis Autor Gitanjali, Amali, Jhuo, Yu-Syuan, Yeh, Fu-Hsuan, Ge, Louis

“…The enzyme-induced calcite precipitation (EICP) has recently gained popularity as a ground improvement technique. Bio-cementation via EICP increases the…”
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State-of-the-Art Review of the Applicability and Challenges of Microbial-Induced Calcite Precipitation (MICP) and Enzyme-Induced Calcite Precipitation (EICP) Techniques for Geotechnical and Geoenvironmental Applications Autor Almajed, Abdullah, Lateef, Mohammed Abdul, Moghal, Arif Ali Baig, Lemboye, Kehinde

“…The development of alternatives to soil stabilization through mechanical and chemical stabilization has paved the way for the development of biostabilization…”
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Biomineralization in perforate foraminifera Autor de Nooijer, L.J., Spero, H.J., Erez, J., Bijma, J., Reichart, G.J.

“…In this paper, we review the current understanding of biomineralization in perforate foraminifera. Ideas on the mechanisms responsible for the flux of Ca2+ and…”
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Porous calcite CaCO3 microspheres: Preparation, characterization and release behavior as doxorubicin carrier Autor Li, Li, Yang, Yang, Lv, Yirui, Yin, Ping, Lei, Ting

“…[Display omitted] •Gelatin was used as a regulator to prepare porous calcite CaCO3 microspheres.•Perfect morphology and single crystal composition.•Outstanding…”
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Effect of freeze-thaw cycles on engineering properties of biocemented sand under different treatment conditions Autor Sharma, Meghna, Satyam, Neelima, Reddy, Krishna R.

“…The recently developed microbially induced calcite precipitation (MICP) method is a potentially effective and environmentally friendly technique to improve the…”
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A study of fluid overpressure microstructures from the creeping segment of the San Andreas fault Autor Hadizadeh, Jafar, Boyle, Alan P., Gaughan, Andrea E.

“…Evidence of episodic fluid overpressure events noted in samples from the San Andreas Fault Observatory at Depth (SAFOD) have remained largely uncorrelated in…”
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CO.sub.2 transport at shallow depths in arc magmas: evidence from unique orbicular dikes in the Jurassic Bonanza arc, Vancouver Island, Canada Autor Morris, Rebecca, Canil, Dante

“…A growing body of evidence suggests the interaction between arc magmas and crustal carbonates may play a large role in outgassed CO.sub.2 at arcs. We examine…”
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Microbial signatures from speleothems: A petrographic and scanning electron microscopy study of coralloids from the Koněprusy Caves (the Bohemian Karst, Czech Republic) Autor Suchý, Václav, Borecká, Lenka, Pachnerová Brabcová, Kateřina, Havelcová, Martina, Svetlik, Ivo, Machovič, Vladimír, Lapčák, Ladislav, Ovšonková, Zuzana Aurélia, Arenas, Concha

“…Exotic carbonate – siliceous coralloid speleothems of the Koněprusy Caves, which consist of dominant aggregates of feather‐like, radial fibrous, dogtooth and…”
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Thermally-induced clumped isotope resetting in belemnite and optical calcites: Towards material-specific kinetics Autor Looser, Nathan, Petschnig, Paul, Hemingway, Jordon D., Fernandez, Alvaro, Morales Grafulha, Luiz, Perez-Huerta, Alberto, Vickers, Madeleine L., Price, Gregory D., Schmidt, Max W., Bernasconi, Stefano M.

“…The application of carbonate clumped isotope (Δ47) thermometry in deep-time is often limited by modification of the original temperature signal by thermal…”
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