Results 61 to 70 of about 225,314 (391)

Using Element/Ca Response to Cleaning in Foraminifera From Endmember Depositional Environments to Infer Contaminants and Inform Pretreatment

Geochemistry, Geophysics, Geosystems
Past ocean conditions are often reconstructed using the elemental composition of foraminiferal calcite. However, foraminiferal remains are often impacted by post‐depositional contaminants; thus, they require cleaning prior to element/Ca (El/Ca) analysis.
Madelyn K. Cook, Ingrid L. Hendy
doaj   +1 more source

Coagulated Mineral Adsorbents for Dye Removal, and Their Process Intensification Using an Agitated Tubular Reactor (ATR)

ChemEngineering, 2021
The aim of this study was to understand the efficacy of widely available minerals as dual-function adsorbers and weighter materials, for the removal of toxic azo-type textile dyes when combined with coprecipitation processes. Specifically, the adsorption
Alastair S. Tonge, David Harbottle, Simon Casarin, Monika Zervaki, Christel Careme, Timothy N. Hunter   +5 more
doaj   +1 more source

The Effect of Amino Acids on the Formation of Amorphous Calcium Carbonate Nanoparticles

Advanced Functional Materials, EarlyView.
Biomineral formation often proceeds via the assembly of amorphous calcium carbonate (ACC) nanoparticles with narrow size distributions. Using in situ SAXS coupled to a stopped‐flow device, we follow synthetic ACC formation with a 10 ms time resolution and show that amino acids narrow the size distribution at low supersaturation, highlighting their key ...
Lucas Kuhrts, Hadar Shaked, Johanna Sklar, Almog Sulam, Iryna Polishchuk, Elena Prudnikov, Gouranga Manna, Michael Sztucki, Sylvain Prevost, Alexander Katsman, Boaz Pokroy   +10 more
wiley   +1 more source

The Influence of Vibration on CaCO3 Scale Formation in Piping System

MATEC Web of Conferences, 2016
Carbonate scale is a common problem found in a piping system of industrial process. The presence of mechanical equipment such as turbine, compressor, blower, mixer and extruder produce a mechanical vibration on the piping system which is placed near ...
Mangestiyono W., Muryanto S., Jamari J., Bayuseno A.P.   +3 more
doaj   +1 more source

Influence of cell cycle phase on calcification in the coccolithophore Emiliania huxleyi [PDF]

, 2008
Calcification of the cosmopolitan coccolithophore species Emiliania huxleyi was investigated in relation to the cell division cycle with the use of batch cultures.
Antia, Avan, LaRoche, Julie, Müller, Marius   +2 more
core   +1 more source

Enantioselective Growth of Chiral Serine‐Induced β‐Ag2Se Crystals from an Organoselenium Compound

Advanced Functional Materials, EarlyView.
Chiral amino acids direct the enantioselective crystallization of β‐Ag2Se nanocrystals from an organoselenium precursor. L‐ and D‐serine induce distinct morphologies and opposite homochiral adsorption preferences, transferring molecular handedness into the inorganic lattice.
Matan Oliel, Yarden B. Moshe, Gil Otis, Dana D. Medina, Yitzhak Mastai, Subhomoy Das   +5 more
wiley   +1 more source

Effects of temperature, pressure, and hydration on the microstructural characteristics and mechanical properties of calcite

Frontiers in Chemistry
Geotechnical geological disasters occur frequently in China. Especially under complex environmental conditions, the failure mode of rock and the change mechanism of its mechanical properties are not clear.
Xiaoyi Zhou, Qiuqi Chen, Xin Tang, Xin Tang, Ruiyu He, Zhangping Yan, Junjie Xiong, Yuhang Zhou, Linyan Li   +8 more
doaj   +1 more source

Application of Microbial Induced Calcite Precipitation (MICP) Technology in Geotechnical and Geo-Environmental Engineering: A Review

Arid Zone Journal of Engineering, Technology and Environment, 2021
One of the most recent areas of research in geotechnical and geo-environmental engineering is bio-mineralization, a natural process in living organisms, also known as Microbial Induced Calcite Precipitation.
I. S. Muhammad, B. B. Kurna , B. S. U. Ibn Abubakar   +2 more
doaj  

Characterization of a complex carbonate-silicate apatite ore and its concentration by a two-stage anionic flotation method

REM: International Engineering Journal, 2022
A carbonate-silicate low weathering phosphate ore from an igneous origin deposit in Southeastern Brazil presents a challenge mainly for apatite flotation from its gangue minerals, calcite and dolomite, plus the presence of phlogopite, diopside, magnetite,
Isabel de Sousa Batista Carvalho, Paulo Roberto Gomes Brandao, Andreia Bicalho Henriques, Eliomar Evaristo Ferreira   +3 more
doaj   +1 more source

The Lomagundi-Jatuli carbon isotopic event recorded in the marble of the Tandilia System basement, Río de la Plata Craton, Argentina [PDF]

, 2019
The “Lomagundi-Jatuli event” corresponds to the most important δ13C positive anomaly (≥5‰) globally reported in Palaeoproterozoic marine carbonates (between ∼2.30 and 2.06 Ga).
Ballivian Justiniano, Carlos Alberto, Cingolani, Carlos Alberto, Etcheverry, Ricardo Oscar, Lajoinie, Maria Florencia, Lanfranchini, Mabel Elena, Recio, C., Sial, A.N.   +6 more
core   +1 more source