(5) the Kinetic Study of Bile Acids in Patients With Cholesterol Gallstone

HATTA, Yoshio; Saito, Hayato; Shimizu, M.

doi:10.2169/naika.66.1196

Cited by 1 publication

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“…The orientational behavior of nematic liquid cr ystals studied by means of FT-IR spectroscopy is discussed in many publications. Thus, ATR/IR spectroscopy was used 4,5 to obtain the orientation parameter for the surfaceinduced orientation of N-(p-m ethoxybenzylidene)-p-butylanilin (MBBA) and homologous series of cyanobiphenyls, respectively. A larger-order param eter of the MBBA on the rubbed In 2 O 3 surface compared to the bulk medium was reported.…”

Section: Introductionmentioning

confidence: 99%

“…A larger-order param eter of the MBBA on the rubbed In 2 O 3 surface compared to the bulk medium was reported. 4 A great number of publications deal with time-resolved studies of the segmental mobility and reorientational motions of 5CB. [6][7][8][9][10][11][12][13] Some of them [8][9][10][11] have found the response to the external perturbation to be different for the mesogen and the aliphatic chain, whereas the authors of other publications 6,13-15 could not observe any difference in the respective reorientation processes.…”

Section: Introductionmentioning

confidence: 99%

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Electric-Field-Induced Reorientation of Liquid Crystalline p-Cyanophenyl-p-n-Alkylbenzoates: A Time-Resolved Study by Fourier Transform Infrared Transmission and Attenuated Total Reflection Spectroscopy

2003

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Time-resolved polarization Fourier transform infrared (FT-IR) transmission and attenuated total reflection (ATR) spectroscopy were applied to investigate the reorientation phenomena of the three members of the homologous series of nematic liquid crystalline p-cyanophenyl-p-n-alkylbenzoates 6CPB, 7CPB, and 10CPB under the external perturbation of an electric field. In conjunction with a newly constructed measurement cell, this method allowed us to differentiate the response of the LC system in the surface layer and in the bulk of the cell at different temperatures and voltages. The relaxation time of the LC molecules close to the wall of the cell was found to be shorter than in the bulk. However, at a field strength of 7 V, the initial orientation in the bulk preceeds the analogous process in the surface region.

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Section: Introductionmentioning

confidence: 99%