Results 101 to 110 of about 13,557 (226)

Sedimentation and Phase Transitions of Colloidal Gibbsite Platelets

open access: yesLangmuir, 2005
We study the competition between sedimentation, gelation, and liquid crystal formation in suspensions of colloidal gibbsite platelets of five different sizes at three ionic strengths. For large particles (with diameters of 350, 420, and 570 nm) sedimentation is initially the most important factor determining the macroscopic behavior.
Wijnhoven, J.E.G.J.   +3 more
openaire   +4 more sources

Adsorção e dessorção aniônicas individuais por gibbsita pedogenética Individual anionic adsorption and desorption by pedogenic gibbsite

open access: yesQuímica Nova, 2009
Anion adsorption/desorption dynamics was studied as individual processes on surface of particles of a gibbsitic clay. The data suggest a remarkable gibbsite role as nitrate leaching retardant in soil.
Adélia A. A. Pozza   +8 more
doaj   +1 more source

Rational descriptive classification of duricrusts [PDF]

open access: yes, 1969
The term duricrust appears to be extending itself to include calcareous, gypseous, and saline crusts, in addition to crusts composed dominantly of silica and/or of sesquioxides of iron and aluminium, with or without significant contents of dioxides of ...
Dury, G.H.
core   +1 more source

Pair distribution function studies in cementitious systems [PDF]

open access: yes, 2017
The analysis of amorphous/nanocrystalline phase(s) within cement matrices that contain high amounts of crystalline phase(s) is very challenging. Synchrotron techniques can be very useful to characterize such complex samples.1 This work is focused on ...
Cuesta-Garcia, Ana Maria   +6 more
core  

INFLUENCE OF GRAIN AND CRYSTALLITE SIZE ON THE GIBBSITE TO BOEHMITE THERMAL TRANSFORMATION

open access: yesStudia Universitatis Babes-Bolyai Chemia, 2015
Thermal decomposition processes of three different samples of hydrated alumina: Bayer precipitated size fractioned, Bayer precipitated ground and fine precipitated, were studied.
Viktor Zsolt BARANYAI   +2 more
doaj  

The Effect of Dissolved Water on the Tribological Properties of Polyalkylene Glycol and Polyolester Oils [PDF]

open access: yes, 1994
The effect of water dissolved in polyalkylene glycol and polyolester oils on the tribological behavior of two material contact pairs in three test environments is evaluated.
Cusano, C.   +2 more
core  

Stop 2 Kainui silt loam and Naike clay, Gordonton Rd [PDF]

open access: yes, 2008
At this stop are several remarkable features both stratigraphic and pedological, and a “two-storied” soil, the Kainui silt loam alongside (in just a few places) the Naike clay. Both soils are Ultisols. The sequence of tephra beds and buried soil horizons
Lowe, David J.
core   +1 more source

Relaxation dynamics in fluids of platelike colloidal particles

open access: yes, 2007
The relaxation dynamics of a model fluid of platelike colloidal particles is investigated by means of a phenomenological dynamic density functional theory.
L. Gránásy   +7 more
core   +1 more source

Pédogenèse en zone tropicale : la formation des minéraux secondaires en milieu ferrallitique [PDF]

open access: yes, 1965
(Docteur en Sciences) -- Université catholique de Louvain ...
Delvigne, Jean
core  

Mineralogy of the clay fraction of Alfisols in two slope curvatures: III - spatial variability Mineralogia da fração argila de um Argissolo em curvaturas do relevo: III - variabilidade espacial

open access: yesRevista Brasileira de Ciência do Solo, 2013
A good knowledge of the spatial distribution of clay minerals in the landscape facilitates the understanding of the influence of relief on the content and crystallographic attributes of soil minerals such as goethite, hematite, kaolinite and gibbsite ...
Livia Arantes Camargo   +2 more
doaj  

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