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Raw palygorskite was modified by the addition of selected surfactants, viz. hexadecyltrimethylammonium bromide (CTAB), cetylpyridinium bromide (CPB) and octadecyldimethylbenzyl ammonium chloride (ODBA...
In order to improve the adsorption capacity of chitosan (CTS) for methylene blue (MB) cationic dye, a series of N,O-carboxymethyl-chitosans (N,O-CMCTS) were prepared under heterogeneous conditions by ...
The thermal stability and kinetics of non-isothermal degradation of polypropene and polypropene composites filled with 20 mass% vigorously grounded and mixed raw rice husks (RRH), black rice husks ash...
Hydration Kinetics of Quicklime.
Quantity, affinity and rate of heavy metals retention by soil constituents can greatly influence the mobility and bioavailability of these metals in soil environments. Equilibrium and kinetic studies...
Abstract: The oxidation state of structural Fe greatly alters surface chemistry, which may have a large influence on clay-organic interactions. The effect of structural-iron oxidation state on chlorin...
The kinetic of H extraction-incorporation in diopside single-crystals (Ca . Na Cr Mg0 97 0.02 0.01 0.97Fe Si O ) deduced by monitoring OH infrared absorption bands for samples heated from 973 to0.036 ...
A method is presented that permits the length of any horizontal, confined fission-track inclined at a specified angle to the crystallographic c axis in apatite to be converted to an equivalent track ...
A new model for examining fission-track data from natural specimens has been developed on the basis of new laboratory data describing fission-track annealing in a wide variety of apatites and the em...
Annealing rates for fission tracks in apatite vary markedly as a complex function of composition, based on an experimental study of 15 well-characterized, compositionally diverse apatites. Extensive ...
A natural example of sequential kinetics for the muscovite dehydration reaction in highly de- formed mylonitic gneisses is analyzed. Studied textures consist of deformed pegmatitic muscovite crystal...
Abstract: The thermal effects, as well as the survivability and origins of microorganisms in Cretaceous rocks, are evaluated from the timing and extent of the smectite to illite transformation in Cret...
Thetemperaturedependenceofthecationdistributioninsyntheticspinel(MgAl O )was2 4 determinedusingin-situtime-of-?ightneutronpowderdiffraction.Neutrondiffractionpat- ternsofstoichiometricMgAl O andsli...
Startling results were obtained in kinetic experiments that varied the initial heating history of the mineral reaction: 1 dolomite 1 2 quartz → 1 diopside 1 2CO2. The exper-iments were carried out at ...
Kineticstudiesconductedprimarilybetween465and525Cdemonstratethattherate ofthepolymorphicanatasetorutiletransformationincreasesdramaticallywhenthereact- inganataseisvery?nelycrystalline.Coarseningoft...

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