Now showing items 31-40 of 65
Atomic physicochemical parameters for three dimensional structure directed quantitative structure-activity relationships III: Modeling hydrophobic interactions
(John Wiley & Sons, Inc., 1988-01)
In an earlier article 8 the need was demonstrated for atomic physicochemical properties for three dimensional structure directed quantitative structure-activity relationships, and it was shown how atomic parameters can ...
Cd2+ activation of -threonine dehydrogenase from Escherichia coli K-12
(Elsevier, 1988-11-23)
Homogeneous preparations of -threonine dehydrogenase (-threonine: NAD+ oxidoreductase, EC 1.1.1.103) from Escherichia coli K-12, after having been dialyzed against buffers containing Chelex-100 resin, have a basal level ...
Small angle neutron scattering (SANS) studies of diffusion in bulk polystyrene near the glass transition temperature (Tg)
(Hüthig & Wepf VerlagWiley Periodicals, Inc., 1988-03)
Ultraslow diffusion in bulk polymers has been measured by SANS. The experiment begins by measuring scattering from heterogeneous specimens containing domains of protonated‐and deuterated‐polymers at temperatures far below ...
Retardation of calcification of bovine pericardium used in bioprosthetic heart valves by phosphocitrate and a synthetic analogue
(Elsevier, 1988-09)
The purpose of this study was to determine if phosphocitrate (PC), a naturally occurring inhibitor of calcification, and its synthetic analogue, N-sulpho-2-amino tricarballylate (SAT), administered either by daily injection ...
A new mild oxidation of amines to aldehydes and ketones. Part II
(Elsevier, 1988)
The silylamines 1, after conversion into their lithium or zinc salts, were readily oxidized by dry air under very mild conditions (-60[deg] C to -20[deg] C; 5-45 min.) into the corresponding aldehydes or ketones 2 in good ...
Transformation Plasticity of CeO 2 -Stabilized Tetragonal Zirconia Polycrystals: II, Pseudoelasticity and Shape Memory Effect
(Blackwell Publishing Ltd, 1988-08)
Vibrational spectroscopy of L -valyl-glycyl-glycine, a parallel-chain Β-structure This is paper number 38 in a series on “Vibrational Analysis of Peptides, Polypeptides, and Proteins,” of which paper number 37 is Ref. 27.
(Wiley Subscription Services, Inc., A Wiley Company, 1988-06)
Bands in the ir and Raman spectra of L -valyl-glycyl-glycine (VGG) and VGG-ND have been assigned on the basis of a normal mode analysis of the known parallel-chain Β-structure of this tripeptide. Amide I, II, III, and V ...
Techniques for preparing hydrogel membrane capsules
(Kluwer Academic Publishers; Science & Technology Letters ; Springer Science+Business Media, 1988-12)
Techniques for preparing four kinds of hydrogel membrane capsules are described. In the present process the material being encapsulated remains in its original environment in an aqueous suspension. Also, capsule characteristics ...
Pattern selection in three dimensional dendritic growth
(Elsevier, 1988-10)
We study the selection of the shape and growth velocity of three dimensional dendritic crystals in cubically anisotropic materials. We demonstrate that aside from minor additional complexities due to the lack of axisymmetry, ...
2-Cyanoethylzinc iodide: A new reagent with reactivity umpolung
(Elsevier, 1988)
2-Cyanoethylzinc iodide 1 generated in over 90% yield from 3-iodopropionitrile and zinc in THF can be transmetallated to the copper and titanium derivatives 3 and 4 which react in good yields, respectively, with acyl ...