Prycing models

There are four electronic transitions (Og symmetry) which should be observed in these systems, and three optical and/or near-infrared transitions between the J = 5/2 and J = 7/2 states have been reported for all the above complexes. In some cases the F7-Fg transition of the J = 5/2 state which occurs in the infrared or near-infrared region has also been observed. These electronic absorption data plus the EPR data on the ground state allow the parameters (including orbital reduction factors) of the Eisenstein-Pryce model [19,35,38] for an octahedral F system to be evaluated as shown in Table 18.1. 

Baker D, Pryce G, Croxford JL. Cannabinoids control spasticity and tremor in a multiple sclerosis model. Nature 2000 404 84-87. 

Baker D, Pryce G, Croxford JL, Brown P, Pertwee RG, Makriyannis A, Khanolkar A, Layward L, Fezza F, Bisogno T, Di Marzo V. Endocanna-binoids control spasticity in a multiple sclerosis model. FASEB J 2001 15 300-302. 

Gilgun-Sherki, Y., E. Melamed, R. Mechoulam, and D. Offen. The CBl cannabinoid receptor agonist, HU-210, reduces levodopa-induced rotations in 6-hydroxydopamine-lesioned rats. Pharmacol Toxicol 2003 93(2) 66—70. Pryce, G., Z. Ahmed, D. L. Hankey, et al. Cannabinoids inhibit neurodegeneration in models of multiple sclerosis. Brain 2003 126(Pt. 10) 2191-2202. Mathew, R. J., W. H. Wilson, and R. Davis. Postural syncope after marijuana a transcranial Doppler study of the hemodynamics. Pharmacol Biochem Behav 2003 75(2) 309-318. 

As a parametrization scheme this model is a typical intermediate between the crude spherical parametrization of the B and C parameters and the complete (and therefore impractical) set of the tetragonal repulsion integrals [31]. A similar strategy was used before by Koide and Pryce [32] in their treatment of octahedral d5-complexes they showed that quasi-degenerate terms of the half-filled d-shell configuration could be splitted by introducing a covalency difference between the t2g and eg orbitals. 

Walters, C.E., Pryce, G., Hankey, D.J., Sebti, S.M., Hamilton, A.D., Baker, D., Greenwood, J., and Adamson, P. (2002). Inhibition of Rho GTPases with protein pre-nyltransferase inhibitors prevents leukocyte recruitment to the central nervous system and attenuates clinical signs of disease in an animal model of multiple sclerosis. J Immunol 168 4087-4094. 

Pryce G, Ahmed Z, Hankey DJ, Jackson SJ, Croxford JL, Pocock JM, Ledent C, Petzold A, Thompson AJ, Giovannoni G, Cuzner ML, Baker D (2003) Cannabinoids inhibit neurodegeneration in models of multiple sclerosis. Brain 126 2191-2202... 

Baker, D., Pryce, G., Croxford, J.L., Brown, P, Pertwee, R.G., Makriyannis, A., Khanolkar, A., Layward, L, Fezza, F, Bisogno, T., and Di Marzo, V. (2001) Endocannabinoids control spasticity in a multiple sclerosis model, FASEB Journal 15 300-302. 

Baker, D., G. Pryce, J.L. Croxford, P. Brown, R.G. Pertwee, J.W. Huffman, and L. Layward (2000). Cannabinoids control spasticity and tremor in a multiple sclerosis model. Nature 404(6773) 84—87. 

Matrix cracking results in reduction in the laminate stiffness and strength. Stiffness reduction in CMCs is greater than that observed in polymer matrix composites due to lower ratio between fibre and matrix moduli. It also affects coefficients thermal expansion and vibration frequencies. A number of models have been suggested to estimate the effect of transverse macrocracks in the 90° plies and matrix cracks bridged by fibres in the 0° plies on the mechanical properties of cross-ply CMC laminates (Pryce and Smith, 1994 Daniel and Anastassopoulos, 1995 Lu and Hutchinson, 1995 Erdman and Weitsman, 1998 Birman and Byrd, 2001 Yasmin and Bowen, 2002 Birman and Weitsman, 2003). 

Table 18.4 Values of the parameters of the modeled Eisenstein-Pryce theory fit to the optical spectra and magnetism of some uranates neptunates (Np ), and a plutonate...

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