Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Chas. G. Wade"'
Publikováno v:
Macromolecules. 23:3454-3458
L'effet du solvant sur la longueur de persistance du poly (isocyanate d'hexyle) en solution est attribuee a une interaction locale des solvants polaires avec la chaine qui entraine des oscillations de torsion plus importantes au voisinage des liaison
Publikováno v:
Journal of Magnetic Resonance (1969). 38:135-139
Nuclear spin relaxation, rotating frame relaxation, and second-moment linewidth studies have been used to study ordering and dynamics in the solid and mesophases of a series of 4,4′-(bis)alkoxyazoxybenzenes. Results were obtained for both heating a
Publikováno v:
The Journal of Chemical Physics. 66:4121-4125
The deuteron fast Fourier transform (FFT) spectra of the ring deuterated nematogens para‐azoxyanisole (PAA‐d8) and p‐methoxybenzylidene p‐n‐butylaniline (MBBA‐d8) have been studied as a function of temperature. An interpretation of the sp
Autor:
Ronald Y. Dong, E. Tomchuk, J. J. Visintainer, An‐Li Kuo, Ernst Bock, David B. Dewey, Chas. G. Wade
Publikováno v:
The Journal of Chemical Physics. 66:3343-3346
Proton spin–lattice relaxation times (T1) have been measured in methyl deuterated para‐azoxyanisole (PAA‐d6) and in ring deuterated para‐azoxyanisole (PAA‐d8) samples as functions of frequency and temperature. When compared with recent orde
Autor:
Mirko I Hrovat, Chas. G. Wade
Publikováno v:
Journal of Magnetic Resonance (1969). 45:67-80
In NMR diffusion measurements, the application of pulsed magnetic field gradients can produce additional magnetic field gradients, residual gradients, which decay slowly after the pulse. Results indicate that at least two types of residual gradients
Publikováno v:
The Journal of Chemical Physics. 63:986-990
Deuteron spin lattice relaxation T1Q has been measured in the liquid crystal and liquid phases of di‐methoxyazoxybenzene deuterated at the aromatic positions (PAA‐d8) and di‐n‐heptyloxyazoxybenzene similarly deuterated (HOAB‐d8). T1Q of PAA
Publikováno v:
The Journal of Chemical Physics. 74:633-636
A single orientation order parameter tensor is shown to be sufficient for the entire molecule in the nematic phase of perdeuterated p‐azoxyanisole by examining all the deuteron line splittings in the manner suggested by Bos and Doane. Two order par
Publikováno v:
Magnetic Resonance in Medicine. 5:572-577
NMR studies of living cells and of perfused organs almost invariably require a major effort in the design of either the probe or the support system. For enriched 13C studies of metabolism, it is sometimes possible to use a simpler approach, one amena
Autor:
Joel F Martin, Chas. G. Wade
Publikováno v:
Journal of Magnetic Resonance (1969). 61:153-157
On a developpe une nouvelle sequence d'impulsions pour obtenir l'information de deplacement chimique dans les images RMN. L'information de deplacement chimique est codee comme modulation d'amplitude de la composante longitudinale d'aimantation
Publikováno v:
Molecular Crystals and Liquid Crystals. 22:309-315
The relative importance of intermolecular (T lr) and intramolecular (T la contributions to nuclear spin relaxation in liquid crystals is discussed with particular emphasis on p-azoxyanisole (PAA). Previously published data on T lr and T la in PAA, ob