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Showing 1 to 20 of 206 for “"Silicates."”.
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Hybrids Based on Layered Silicates
… based on combinations of various layered silicates as inorganic core and well-defined polymer chains as a shell. In all cases positively charged 2-(dimethylamino)ethyl methacrylate (DMAEMA) was incorporated into the polymeric structure to serve as a firm anchor onto the negatively charged …
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Modeling the properties of silicates
… more common in non-framework than in framework silicates. Correlated motion is found among the ADPs that is consistent with TLS rigid body motion. For these data, the translational motion is represented by the ADPs of the central T atom while both the librational and translational motion is …
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Aromatic hydroxylations over titanium-substituted crystalline silicates
This work focuses on aromatic hydroxylations over titanium-substituted zeolites of different pore sizes (TS-1, Al-free Ti-beta and Ti-HMS) using aqueous H2O2 as the oxidant. The aim was to gain a deeper understanding of the key factors controlling activity and selectivity, which implied an …
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The electrical properties of iron rich silicates
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Geology and Geophysics, 1961.
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Novel mesoporous silicates as indoor air pollutant scavengers
… chambers were created in-house. Mesoporous silicates were synthesised to control the surface area, pore size and pore volume of the material. Several preparation methods were used to produce the final mesoporous silicate sorbent. The mesoporous silicates were mainly synthesised using …
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The Role of Silicates in Interstitial Lung Disease
Interstitial Lung disease (ILD), produces disruption of alveolar walls with loss of functionality and accumulation of scar tissue. Asbestosis and silicosis are the ILD produced by the inhalation of asbestos fibers or silica particles respectively. An increase in prostacyclin release after exposing …
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The Role of Silicates in Interstitial Lung Disease
Interstitial Lung disease (ILD), produces disruption of alveolar walls with loss of functionality and accumulation of scar tissue. Asbestosis and silicosis are the ILD produced by the inhalation of asbestos fibers or silica particles respectively. An increase in prostacyclin release after exposing …
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Drying Shrinkage and Microstructure of Hydrated Calcium Silicates
Made available in DSpace on 2014-12-14T15:24:03Z (GMT). No. of bitstreams: 1 7913521.pdf: 7919333 bytes, checksum: 93329c9cc76cd3e2ac21fd6a8cc48f0d (MD5) Previous issue date: 1978
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Microporous Organically Pillared Layered Silicates (MOPS) with tunable Functionality
… „Microporous Organically Pillared Layered Silicates“ (MOPS), die Klasse der mikroporösen Materialien. Die Bezeichnung „Pillared Interlayered Clays (PILCs)“ wird in der Literatur leider nicht nur für tatsächlich gepillarte, mikroporöse Materialien verwendet, sondern zum Teil auch für normale …
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Heat of formation of some ferro-calcic singulo-silicates
Thesis: M.S., Massachusetts Institute of Technology, Dept. of Mining Engineering and Metallurgy, 1908
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Measurement of elastic properties of silicates at realistic mantle pressures
Measurements of seismic wave travel times through the Earth’s interior provide one of the few sources of information on the properties of deep mantle rocks. These travel times can be interpreted in terms of their implications for the mineralogy, chemistry and temperature of the mantle if they can …
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Biosolubilization of K-silicates in pelitic rock by Acidithiobacillus thiooxidans
Bacteria that oxidize reduced forms of S are used in industry to leach metals, such as gold and copper. The generation of acidity, from the oxidative dissolution of S, is the main mechanism by which it is possible to solubilize minerals using the bacterium Acidithiobacillus thiooxidans. In this …
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Effect of Melt Constitution on the Growth of Lead Silicates
Made available in DSpace on 2014-12-14T15:23:59Z (GMT). No. of bitstreams: 1 7616186.pdf: 6717840 bytes, checksum: 822eaab5c18905cf081c0ca908677025 (MD5) Previous issue date: 1976
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Iron in oxides, silicates and alloys under extreme pressure-temperature conditions
(1) There is a general agreement, that magnesium silicate perovskite (Pv) comprises around 80 vol% of the Earth's lower-mantle, making it by volume the most abundant mineral in our planet, and and there is no doubt that Pv in the mantle contains Fe and Al. However, the exact concentrations are …
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The effect of trivalent cations on the major lower mantle silicates
I have investigated the effect of composition, especially ferric iron and aluminum, on the equations of state and phase stability of perovskite and post-perovskite. The presence of trivalent cations decreases the bulk modulus of perovskite at pressures corresponding to the upper lower mantle. …
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Towards Mechanical Reinforcement in Polymer Layered Silicates Nanocomposites of the Second Generation
… of nanofillers based on synthetic layered silicates for preparation of nanocomposites with improved mechanical reinforcement. The mechanical characterization was done in collaboration with the Polymer Engineering Department at Bayreuth University in the frame work of SFB 840 (Project B3). …
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Structural studies of mineral silicates and synthetic sulfosalts characterised by mixed occupancies
… the distribution of metal species within mineral silicates is better understood than in sulfosalts, and they provided a good base from which to study the latter. The presented results include the crystal structure of the new mineral TAPP (Mg0.76 Fe0.15) (Al1.76 Cr0.16 Mn0.06) (Mg1.88 Fe0.08) Si1 …
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A single-crystal EPR study of radiation-induced defects in selected silicates
This thesis presents a series of single-crystal electron paramagnetic resonance (EPR) studies on radiation-induced defects in selected silicate minerals, including apophyllites, prehnite, and hemimorphite, not only providing new insights to mechanisms of radiation-induced damage in minerals but …
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