Results 61 to 70 of about 5,764,275 (183)

Fossilised Pioneer Microbialite Communities on Basaltic Substrates at Lake Ashenge (Tigray, Ethiopia): A Model for Ecosystems in Noachian–Hesperian Martian Lakes?

open access: yesJournal of Geophysical Research: Planets, Volume 131, Issue 10, October 2026.
Abstract Microbial communities are strongly controlled by local nutrient availability, frequently resulting from mineral weathering and erosion. On Earth, basaltic rocks in habitable alkaline lacustrine environments are often initially colonised by ‘pioneer’ communities that induce the precipitation of fine‐scale microbial carbonate ‘coatings’; on Mars,
Keyron Hickman‐Lewis   +6 more
wiley   +1 more source

Bioavailability of an organophosphorus pesticide, fenamiphos, sorbed on an organo clay

open access: yes, 2003
Hydrolysis of an insecticide/nematicide, fenamiphos [ethyl-3-methyl-4-(methylthio)phenyl-(1-methylethyl)phosphoramidate], immobilized through sorption by cetyltrimethylammonium-exchanged montmorillonite (CTMA-clay) by a soil bacterium, Brevibacterium sp.,
RS Kookana (9883508)   +9 more
core   +2 more sources

Mobility of trace elements in arable soils from the Bobov dol valley, Bulgaria

open access: yesПочвознание, агрохимия и екология, 2017
Soils in the Bobovdol valley are influenced by a complex anthropogenic impact that increases the geochemical and pedo-morphological diversity in the region.
Ivona Nikova, Venera Tsolova
doaj  

A Novel Type of Organo Clay Containing Alkyd-Melamine Formaldehyde Resins

open access: yes, 2013
In this study, organo clay-modified alkyd resins were synthesized and these modified alkyd resins were cured with different ratios of melamine formaldehyde resin for the first time.
Guclu, Gamze   +3 more
core   +1 more source

Study of an organically modified clay: Selective adsorption of heavy metal ions and voltammetric determination of mercury(II)

open access: yes, 2006
In this work, a hydrophilic clay, Na-montmorillonite from Wyoming, USA, was rendered organophilic by exchanging the inorganic interlayer cations for hexaclecyltrimethylammonium ions (HDTA), with the formulae of [(CH3)(3)N(C16H33)](+) ion.
Dias, N. L., do Carmo, D. R.
core   +1 more source

Water Purification From Organic Polluttants by Using Micelle-Clay Systems

open access: yes, 2009
Organo-clay complexes show several applications in the treatment of waste effluents, as extenders for activated carbon, and as components of clay barriers.
EL HANKARI S   +5 more
core   +1 more source

Adsorption of the herbicide 2,4-D on organo-palygorskite [PDF]

open access: yes, 2010
Among the clay minerals, montmorillonite is the most extensively studied material using as adsorbents, but palygorskite and its organically modified products have been least explored for their potential use in contaminated water remediation.
Xi, Yunfei   +8 more
core   +1 more source

The Microstructural and Mechanical Characterization of Organo-Clay-Modified Bitumen, Calcareous Aggregate, and Organo-Clay Blends

open access: yes, 2016
Bitumen has been widely used as the binder of aggregate in road pavement due to its good viscoelastic properties, as a viscous organic mixture with various chemical compositions.
T. B. Barın, Ç. Doğar, A. Gürses
core   +1 more source

Synthesis and film properties of long oil alkyd resin/organo clay nanocomposite coatings

open access: yes, 2015
This study deals with the synthesis and investigation of the surface-coating properties of nanocomposite long oil alkyd resins which contain different ratios of organo clay.
Guclu, Gamze   +2 more
core   +1 more source

Removal of Basic Dye from Aqueous Solutions Using a Novel Nanocomposite Hydrogel: N-Vinyl 2-Pyrrolidone/Itaconic Acid/Organo Clay

open access: yes, 2013
In this work, N-vinyl-2-pyrrolidone/itaconic acid/organo clay nanocomposite hydrogels were synthesized by free radical polymerization technique using different amounts of organo clay.
Guclu, Gamze   +2 more
core   +1 more source

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