Now showing items 351-360 of 373
Cracks developed during SrTiO 3 thin-film preparation from polymeric precursors
(John Wiley & Sons, Ltd., 1999-05)
Strontium titanate (SrTiO 3 ) thin films were prepared by dip-coating Si(111) single-crystal substrates in citrate solutions of ethylene glycol, considering several citric acid/ethylene glycol (CA/EG) ratios. Measurements ...
A synthesis of (+)-7-Epiaustraline and (-)-7-Epialexine
(Elsevier, 1991-09-30)
Reductive cyclization of the azido epoxides 19[alpha] and 19[beta] followed by deprotection afforded the HIV inhibitor (+)-7-epiaustraline 7 and (-)-7-epialexine 9. The formation of 7 proceeded with an unusual inversion ...
Synthesis of a disulfide cross-linked DNA triple helix
(Elsevier, 1994-06-27)
An intramolecular DNA triple helix incorporating a disulfide cross-link has been synthesized. Potassium permanganate footprinting and UV melting analysis demonstrate that the cross-link increases the conformational stability ...
α- d -Galactosylation of surface fucoglycoconjugate(s) upon stimulation/activation of murine peritoneal macrophages
(Kluwer Academic Publishers; Chapman & Hall ; Springer Science+Business Media, 1992-04)
Murine resident macrophages express, on their surface, carbohydrate epitopes which undergo changes during their stimulation/activation as monitored by binding of 125 I labelled Evonymus europaea and Griffonia simplicifolia ...
Antibody-antigen complex formation with immobilized immunoglobulins
(Elsevier, 1992-08-15)
We have investigated the complex formation between an immobilized monoclonal antibody and antigens that differ in size about 50-fold. As a model system, we used an iodinated progesterone derivative and a progesterone-horseradish ...
Preparation of polyfunctional diorganomercurials and their transmetallation to diorganozincs. Applications to the preparation of optically active secon
(Elsevier, 1992-10-13)
Two new methods of preparation of functionalized diorganomercurials have been developed. The first method involves a substitution reaction of (ICH2 Their transmetallation with zinc dust (toluene, 80[deg]C, 3-5 h) affords ...
Carbohydrate-binding specificity of the daffodil (Narcissus pseudonarcissus) and amaryllis (Hippeastrum hybr.) bulb lectins
(Elsevier, 1990-06)
The carbohydrate binding specificity of the daffodil (Narcissus pseudonarcissus; NPA) and amaryllis (Hippeastrum hybr.; HHA) lectins, isolated from extracts of their bulbs by affinity chromatography on immobilized mannose, ...
Defect interactions on solid surfaces
(Elsevier, 1993-03-10)
A unified approach to the calculation of the elastic interaction between defects on a surface that describe, for example, steps, islands, and stress domains is presented. This is accomplished by determining the spatial ...
Hydrodesulfurization over model sulfide cluster-derived catalysts
(Elsevier, 1991)
There is growing interest in the use of organometallic clusters as precursors to model heterogeneous catalysts. This interest is partially derived from the expectation that "solid-state metal complex catalysts" will be ...