Search Results - "Fyfe, C. A"

Quantitative NMR imaging study of the mechanism of drug release from swelling hydroxypropylmethylcellulose tablets by Fyfe, C.A, Blazek-Welsh, A.I

“…NMR imaging has been used to study the release behavior of two model drugs, triflupromazine–HCl and 5-fluorouracil, from swelling hydroxypropylmethylcellulose…”
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Investigation of Hydrogel Formation from Hydroxypropylmethylcellulose (HPMC) by NMR Spectroscopy and NMR Imaging Techniques by Fyfe, C. A, Blazek, A. I

“…NMR imaging has been used to investigate the in situ swelling behavior of 2-hydroxypropylmethylcellulose (HPMC) tablets in a sample geometry chosen for the…”
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NMR imaging investigations of drug delivery devices using a flow-through USP dissolution apparatus by Fyfe, C.A, Grondey, H, Blazek-Welsh, A.I, Chopra, S.K, Fahie, B.J

“…A system for performing NMR imaging experiments on drug delivery devices within a flow-through dissolution apparatus, USP Apparatus 4, has been developed. The…”
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One- and two-dimensional high-resolution solid-state NMR studies of zeolite lattice structures by Fyfe, C. A, Feng, Y, Grondey, H, Kokotailo, G. T, Gies, H

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Simple, efficient syntheses of zeolite ZSM-11 ( MEL) at temperatures below 100 °C using very dense gels by Fyfe, C.A., Lin, Z.S., Tong, C., Darton, R.J.

“…Dense gel syntheses of phase pure MEL at temperatures below 100 °C with crystallisation times similar to conventional syntheses at much higher temperatures…”
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Complications in investigations of the swelling of hydrogel matrices due to the presence of trapped gas by Fyfe, C.A, Blazek, A.I

“…In recent studies, NMR imaging has been used to investigate the swelling of hydroxypropylmethylcellulose (HPMC) tablets and to determine polymer concentration…”
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Solid-state NMR detection, characterization, and quantification of the multiple aluminum environments in US-Y catalysts by (27)Al MAS and MQMAS experiments at very high field by Fyfe, C A, Bretherton, J L, Lam, L Y

“…The detection of all of the aluminum present in steamed zeolite H-Y catalysts by (27)Al MAS NMR at 14.4 T (600 MHz for (1)H) and 18.8T (800 MHz for (1)H) is…”
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Efficient, low-cost, minimal reagent syntheses of high silica zeolites using extremely dense gels below 100 °C by Fyfe, C.A., Darton, R.J., Mowatt, H., Lin, Z.S.

“…The powder XRD pattern in the figure demonstrates the high quality of MFI samples prepared from very dense gels with stochiometric quantities of silica and…”
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Harvesting and climate effects on organic matter characteristics in British Columbia coastal forests by PRESTON, C. M, TROFYMOW, J. A, NIU, J, FYFE, C. A

“…As part of investigations into the effects of harvesting old-growth forest, we characterized carbon in five organic matter pools in eight forest…”
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Solid-State NMR Characterization of the Mineral Searlesite and Its Detection in Complex Synthesis Mixtures by Fyfe, Colin A, Skibsted, Jørgen, Schwieger, Wilhelm

“…The mineral searlesite (NaBSi2O5(OH)2) was synthesized and characterized by 1H, 11B, 23Na, and 29Si magic-angle spinning (MAS) NMR spectroscopy. From these…”
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INEPT Experiments in Solid-State NMR by Fyfe, C. A, Wong-Moon, K. C, Huang, Y, Grondey, H

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Observation of muonium in zeolites by Arseneau, D.J., Fleming, D.G., Fyfe, C.A., Senba, M.

“…Muonium has been directly detected over a range of temperatures and fields by transverse field μSR in different zeolites: 3A, 13X, USY, ZSM-5, and S-115 (a…”
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Resolving crystallographically distinct tetrahedral sites in silicalite and ZSM-5 by solid-state NMR by Fyfe, C. A, Gobbi, G. C, Klinowski, J, Thomas, J. M, Ramdas, S

“…"Magic-angle-spinning" NMR has revealed fresh insights into the atomic structure of the polymorph of silica, silicalite, which has exceptional absorptive…”
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Use of NMR imaging in the optimization of a compression-coated regulated release system by Fahie, Brian J, Nangia, Avinash, Chopra, Sham K, Fyfe, Colin A, Grondey, Hiltrud, Blazek, Almira

“…Nuclear magnetic resonance (NMR) imaging is routinely used to detect the protons of mobile water molecules within samples. In this investigation, this…”
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Lattice Energy-Minimization Calculation in the Further Investigation of XRD and NMR Studies of Zeolite Frameworks by Hochgräfe, M, Gies, H, Fyfe, C. A, Feng, Y, Grondey, H

“…A knowledge of the local structure of zeolite frameworks is an important prerequisite for a detailed and quantitative understanding of e.g. catalytic…”
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Monitoring of structural changes accompanying ultrastabilization of faujasitic zeolite catalysts by Klinowski, J, Thomas, J. M, Fyfe, C. A, Gobbi, G. C

“…By recording high-resolution solid-state NMR spectra of zeolitic samples spun (at similar to 3 kHz) at the magic angle ( theta = 54 degree 44' so that 3 cos…”
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Direct Solid-State 13C NMR Evidence for Covalent Bond Formation between an Immobilized Vinylsilane Linking Agent and Polymer Matrixes by Fyfe, C. A, Niu, J

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Zeolite Nanoclusters Coated onto the Mesopore Walls of SBA-15 by Do, Trong-On, Nossov, Andrei, Springuel-Huet, Marie-Anne, Schneider, Celine, Bretherton, Jeremy L, Fyfe, Colin A, Kaliaguine, Serge

“…Ultrahigh-field 27Al MAS and MQMAS NMR and 129Xe NMR were used to characterize the zeolite-coated SBA-15 materials. This study shows evidence that zeolite…”
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Proton NMR method for the quantitative determination of the water content of the polymeric fluorosulfonic acid Nafion-H by Bunce, Nigel J, Sondheimer, Susan J, Fyfe, C. A

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Measurement of Cryoprotective Solvent Penetration into Intact Organ Tissues Using High-Field NMR Microimaging by Isbell, Stephanie A., Fyfe, Colin A., Ammons, Richard L.M., Pearson, Betty

“…Existing methods are not able to monitor accurately the penetration of cryoprotective solvents (CPS) into intact tissues. In this study, NMR imaging is shown…”
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