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The forms of plant nutrient elements in Australian native plant ash derived from several species and the incubation effects on soil
forms plant nutrient elements Australian native plant ash derived several species the incubation effects soil
2012/3/30
Wildfires and prescribed fires burn many thousand of hectares of forest annually (Ulery et al., 1996). The intensity of forest burning is related to weather conditions, amount of fuel available and th...
Roads Accelerate the Invasion Process of Alien Species
Alien Species Human Disturbance Invasion Road
2011/12/21
Biological invasions have been identified as one of the human-induced global changes, which not only threaten native biodiversity but also cause a considerable economic loss both globally and locally....
Impact of Different Asbestos Species and other Mineral Particles on Pulmonary Pathogenesis
Asbestos Clays Lung Neutrophils Pathology Phagocytosis Physicochemical Silica Talc
2011/12/7
Abstract: Factors that are potentially important in the pulmonary pathogenesis of asbestos and other mineral particles are: 1) morphology, 2) Fe-content, 3) solubility under intra-phagosomal condition...
Theoretical studies on aluminate and sodium aluminate species in models for aqueous solution: Al(OH)3, Al(OH)4-, and NaAl(OH)4
Theoretical studies aluminate sodium aluminate species models aqueous solution Al(OH)3 Al(OH)4 NaAl(OH)4
2012/4/1
Ab initio quantum mechanical calculations were performed on Al(OH) , Al(OH) , NaAl(OH)and related species with varying numbers of explicit water molecules to elucidate the structural,spectral and ener...
Reactions of aqueous Au1+ sulfide species with pyrite as a function of pH and temperature
Reactions of aqueous Au1+ sulfide species with pyrite as a function of pH and temperature
2012/3/31
The reactivity of aqueous Au11 sulfides with FeS2 at pH 5 3 and 6 for temperatures of 25 and 908C has been investigated using X-ray photoelectron spectroscopy (XPS), scan-ning electron microscopy with...
Effect of Time and Temperature on the Chemical Composition and Crystallization of Mixed Iron and Aluminum Species
Aluminum Crystallization Gibbsite Iron
2011/12/1
Abstract: We studied the influence of time ageing (up to 120 d at 50°C or 30d at 95°C) on the mineralogical and chemical composition of hydrolytic species of mixed aluminum and iron samples formed at ...
Ab initio calculations on aluminosilicate Q3 species: Implications for atomic structures of mineral surfaces and dissolution mechanisms of feldspars
Ab calculations aluminosilicate Q3 species Implications for atomic structures dissolution mechanisms of feldspars
2012/4/6
Molecularorbitalcalculations onvariousaluminosilicate Q3T-OHandbridging0spe-cieswereperformed to modelatomic structural changesonmineralsurfacesthat occuras
a function ofpH. Calculatedvibrational fre...
Medenbachite, Bi2Fe(Cu,Fe)(O,OH)2(OH)2(AsO4)2, a new mineral species: Its description and crystal structure
Medenbachite Bi2Fe(Cu,Fe)(O,OH)2(OH)2(AsO4)2 mineral species crystal structure
2012/4/5
Medenbachite occurs in association withmixite, preisingerite, alunite, goethite, reichen-bachite, and malachite in a silicified barite vein from Reichenbach near Bensheim, Oden-wald, Hesse, Germany. I...
Bechererite, (Zn,Cu)6Zn2(OH)13[(Si,S)(O,OH)4]2, a novel mineral species from the Tonopah-Belmont mine, Arizona
Bechererite (Zn,Cu)6Zn2(OH)13[(Si,S)(O,OH)4]2 Tonopah-Belmont mine
2012/4/5
Bechererite is a new mineral found ondump material from the Tonopah-Belmont mine, Maricopa County, Arizona, U.S.A. It occurs as thin elongated crystals, commonly in hemispherical aggregates, and it is...
Preparation and Characterization of Montmorillonites Pillared by Cationic Silicon Species
Cationic silicon complexes Intercalation Microporosity Montmorillonite Oligosilsesquioxanes Pillared clays Thermal stability
2011/12/28
The hydrolysis of 2-(2-trichlorosilylethyl)pyridine (TCSEP) or 3-aminopropyltrimethoxysilane (APTMS) yields a complex mixture of oligomers, the composition of which is a function of time. 29Si NMR mea...
Use of Competitive Ion Exchange for Intercalation of Montmorillonite with Hydroxy-Aluminum Species
Competitive ion exchange Hydroxy-Al Intercalation Montmorillonite Pillared clays Thermal stability X-ray powder diffraction
2012/1/4
Three montmorillonite samples, from Wyoming (particle size <0.2 µm, 4.6 wt. % Fe2O3), Greece (<14 µm, 6.5 wt. % Fe2O3), and Poland (0.5 wt. % Fe2O3, two fractions <2 µm and 2–10 &mic...
D-Glucosamine Sorption on Cu(II)-Montmorillonite as the Protonated and Neutral Species
Adsorption Copper D-glucosamine Electron spin resonance Infrared spectroscopy Montmorillonite Protonation
2012/1/6
The adsorption of D-glucosamine (2-amino-2-deoxy-D-glucose) in the protonated or neutral form on homoionic Cu2+-bentonite was investigated by infrared (IR) and electron spin resonance (ESR) spectrosco...
Sintering of Montomorillonites Pillared by Hydroxy-Aluminum Species
Calcination Hydroxy-Al Infrared spectroscopy Montmorillonite Mossbauer spectroscopy Pillared interlayer complex Thermal stability
2012/1/9
The sintering of montmorillonites pillared by hydroxy-Al species was investigated by several techniques. The change of the microporosity of the pillared interlayer clay with temperature shows that sin...
Effect of Silicate Species on the Transformation of Ferrihydrite into Goethite and Hematite in Alkaline Media
Ferrihydrite Goethite Hematite Morphology Silicate Transmission electron microscopy
2011/11/25
Abstract: The transformation of ferrihydrite to goethite and/or hematite in alkaline media is strongly retarded by the presence of silicate species. These species probably stabilize ferrihydrite by ad...
Quinoline Sorption on Na-Montmorillonite: Contributions of the Protonated and Neutral Species
Adsorption Cation exchange Montmorillonite Quinoline Vanselow selectivity
2012/1/10
Dilute aqueous solutions of quinoline were contacted with Na-montmorillonite to elucidate the sorption process of the neutral and protonated species. Sorption occurs via a combination of ion exchange ...