Results 21 to 30 of about 10,713 (180)

Diagenesis of the Sedimentary Fe–Ni Deposits of Euboea: Evidence Based on Phyllosilicate Mineralogy

open access: yesMaterials Proceedings, 2021
A set of samples with different textures from the sedimentary Fe–Ni deposits of Central Euboea, Greece, were studied with XRD and SEM-EDS to investigate the relationships between phyllosilicates present.
Spyros Cheliotis-Chatzidimitriou   +2 more
doaj   +1 more source

Charge Heterogeneity in Smectites

open access: yesClays and Clay Minerals, 1983
AbstractThe heterogeneity of sites for Ca→K exchange was examined by microcalorimetry in the <0.2-μm fractions of some selected smectites. Six groups of sites, ranging in exothermic exchange enthalpy (-d(ΔHx)/dx) from 5.7 to 10.9 kJ/eq were identified.
Talibudeen, O., Goulding, K. W. T.
openaire   +1 more source

Natural Mordenite from Spain as Pozzolana

open access: yesMolecules, 2020
This work deals with anomalous concentrations of natural mordenite in the southeast of Spain. The X-ray diffraction (XRD) and scanning electron microscopy (SEM) studies evidenced that the samples contain mainly monomineral zeolitic phase of mordenite (70%
Leticia Presa   +3 more
doaj   +1 more source

Smectite promotes probiotic biofilm formation in the gut for cancer immunotherapy

open access: yesCell Reports, 2021
Summary: Administration of probiotics to regulate the immune system is a potential anti-tumor strategy. However, oral administration of probiotics is ineffective because of the poor inhabitation of exogenous bacteria in host intestines.
Congwei Han   +11 more
doaj   +1 more source

Smectite-water

open access: yes, 2023
The molecular structure files used for the adsorption simulations, as well as the generated adsorption process files.
Jie Meng, Changdong Li
openaire   +1 more source

Adsorption of sulphuric acid on smectite from acidic aqueous solutions Adsorção de ácido sulfúrico em esmectita de soluções aquosas ácidas

open access: yesCerâmica, 1999
The adsorption of sulphuric acid on smectite from acidic aqueous solutions was studied. The amounts of cations dissolved in each equilibrium solution were determined by chemical analysis.
E. L. Tavani, C. Volzone
doaj   +1 more source

Weathering microenvironments on feldspar surfaces: implications for understanding fluid-mineral reactions in soils [PDF]

open access: yes, 2008
The mechanisms by which coatings develop on weathered grain surfaces, and their potential impact on rates of fluid-mineral interaction, have been investigated by examining feldspars from a 1.1 ky old soil in the Glen Feshie chronosequence, Scottish ...
Smith, C.L.   +13 more
core   +1 more source

MAPPING REMOVAL SWELLING CLAY SOILS IN THE AURES (N’GAOUS) ALGERIA [PDF]

open access: yesAnalele Universităţii din Oradea: Seria Geografie, 2016
The shrinkage and swelling phenomena of certain clay soils cause differential settlement manifested by disorders that affect mainly the individual frame. The objective of this research was to create a map related to these phenomena especially in the area
Rahmani MOUNA   +2 more
doaj  

PHYSICO-CHEMICAL PROPERTIES OF MONTMORILLONITE CLAYS AND THEIR APPLICATION IN CLINICAL PRACTICE (REVIEW) [PDF]

open access: yesResearch Results in Pharmacology, 2017
The review is devoted to the medical application of montmorillonite clay minerals. Properties and mechanisms of action of enterosorbents. The properties of the enterosorbents include an absorption capacity and active surface.
Anton Tishin   +4 more
doaj   +3 more sources

Sorção de Diuron em minerais da fração argila

open access: yesQuímica Nova, 2012
The objective of the present study was to evaluate the adsorption of the herbicide Diuron onto smectite and Fe oxides minerals. Ninety mg of each mineral, 1 mL of 0.15 mol L-1 CaCl2 and 8 mL of Diuron (0.25-10.00 mg L-1) were used in triplicates.
Izabel Cristina Leinig Araujo   +3 more
doaj   +1 more source

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