Results 201 to 210 of about 174,711 (259)
Advanced Science, EarlyView.Nanoscale secondary ion mass spectrometry (Nano SIMS) is established as a powerful analytical tool to visualize and quantify the membrane fouling layers. ABSTRACT Membrane technology has garnered considerable attention for applications in wastewater treatment and resource recovery. Nevertheless, membrane fouling remains a major barrier, yet the lack of
Mengfei Wu +4 more
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Binding Mode-Based Physicochemical Screening Method Using d-Ala-d-Ala Silica Gel and Chemical Modification Approach to Facilitate Discovery of New Macrolactams, Banglactams A and B, from Nonomuraea bangladeshensis K18-0086. [PDF]
ACS OmegaKimishima A +10 more
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Physical Review Letters, 1991
The structure of silica hydrogels has been studied by elastic light scattering. Like colloidal silica gels and neutrally catalyzed aerogels, these gels show mass fractal behavior at length scales below a crossover length \ensuremath{\xi} and scatter like a spatially random distribution of fractal objects for length scales g\ensuremath{\xi}.
F. FERRI, B. J. FRISKEN, D. S. CANNELL
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The structure of silica hydrogels has been studied by elastic light scattering. Like colloidal silica gels and neutrally catalyzed aerogels, these gels show mass fractal behavior at length scales below a crossover length \ensuremath{\xi} and scatter like a spatially random distribution of fractal objects for length scales g\ensuremath{\xi}.
F. FERRI, B. J. FRISKEN, D. S. CANNELL
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Annual Review of Materials Research, 1990
Sol-gel techniques can be used to produce two new types of optical silicas, termed Type V for the full density material and Type VI for the optically transparent porous material. This paper summarizes the processing differences between these six types of commercial silicas.
L L Hench, W Vasconcelos
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Sol-gel techniques can be used to produce two new types of optical silicas, termed Type V for the full density material and Type VI for the optically transparent porous material. This paper summarizes the processing differences between these six types of commercial silicas.
L L Hench, W Vasconcelos
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SPIE Proceedings, 1988
Gel Silica WaveguidesR.V. Ramaswamy, Taipau Chia *, R. Srivastava, A. Miliou and J. West*University of Florida, Department of Electrical EngineeringGainesville, Florida 32611*University of Florida, Department of Material Science and EngineeringGainesville, Florida 32611ABSTRACTWe report the first observation of modification of the surface- refractive ...
R. V. Ramaswamy +4 more
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Gel Silica WaveguidesR.V. Ramaswamy, Taipau Chia *, R. Srivastava, A. Miliou and J. West*University of Florida, Department of Electrical EngineeringGainesville, Florida 32611*University of Florida, Department of Material Science and EngineeringGainesville, Florida 32611ABSTRACTWe report the first observation of modification of the surface- refractive ...
R. V. Ramaswamy +4 more
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SPIE Proceedings, 1988
The processing and properties of Types I and II fused quartz optics and Types III and IV synthetic fused silica optics are compared with new organometallic sol-gel derived (Types V and VI) gel-silica optics. Type V gel-silica has excellent transmission from 165 nm to 4200 nm with no OH absorption peaks.
L. L. Hench, S. H. Wang, J. L. Nogues
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The processing and properties of Types I and II fused quartz optics and Types III and IV synthetic fused silica optics are compared with new organometallic sol-gel derived (Types V and VI) gel-silica optics. Type V gel-silica has excellent transmission from 165 nm to 4200 nm with no OH absorption peaks.
L. L. Hench, S. H. Wang, J. L. Nogues
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Living bacteria in silica gels
Nature Materials, 2002The encapsulation of enzymes within silica gels has been extensively studied during the past decade for the design of biosensors and bioreactors. Yeast spores and bacteria have also been recently immobilized within silica gels where they retain their enzymatic activity, but the problem of the long-term viability of whole cells in an inorganic matrix ...
Nadine, Nassif +5 more
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Chemical modification of silica gels
Journal of Sol-Gel Science and Technology, 1997Highly porous pure and polyethyleneglycol (PEG)-doped silica gels have been prepared from tetraethyl orthosilicate (TEOS) in ethanol using NH4OH base-catalysis. Addition of PEG to the SiO2-systemincreases the average particle size and most frequent pore diameter of the resultant gels while their total surface areadecreases.
M.S.W. Vong, N. Bazin, P.A. Sermon
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SPIE Proceedings, 1990
ABSTRACT Sol-gel processing is used to make two new types of silica optics, Type V fully dense silica and Type VIoptically transparent ultraporous silica. Type VI silica is an ideal matrix for impregnation with second phases that are optically active, resulting in a hybrid optical material with a unique combination of properties.
Larry L. Hench +3 more
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ABSTRACT Sol-gel processing is used to make two new types of silica optics, Type V fully dense silica and Type VIoptically transparent ultraporous silica. Type VI silica is an ideal matrix for impregnation with second phases that are optically active, resulting in a hybrid optical material with a unique combination of properties.
Larry L. Hench +3 more
openaire +1 more source