Now showing items 11-20 of 87
[omega]-Difluoroamino carboxylic acids: Readily accessible fluorine-labeled fatty acid analogs
(Elsevier, 1983-05)
15-Difluoroamino-pentadecanoic acid and 12-difluoroamino-dodecanoic acid were prepared by treating the corresponding lactams with F2 in aqueous acetonitrile. The intermediate N-fluorolactams were also isolated. Whereas ...
Transfer of small plasmid DNA fragments from polyacrylamide gels onto nitrocellulose paper
(Elsevier, 1983-10-15)
The incorporation into a 7% polyacrylamide gel of a nucleic acid-specific photochemical reagent 4,5',8-trimethylpsoralen at a concentration of 1 mg/dl of acrylamide solution improves both the sensitivity and the efficiency ...
Comparison of methods of analysis of polychlorinated biphenyls in oils
(Elsevier, 1983)
In order to standardize and validate methods for the analysis of polychlorinated biphenyls in transformer oil, waste oil, hydraulic fluid and capacitor oil in the concentration range 30-500 ppm, a study was performed which ...
Vibrational analysis of conformation in peptides, polypeptides, and proteins This is paper number 16 in a series of which Ref. 20 is paper 15.
(Wiley Subscription Services, Inc., A Wiley Company, 1983-01)
A vibrational force field for the polypeptide chain has been developed for normal-mode analysis of such molecules. It can reproduce observed frequencies of known structures to within about 5 cm −1 . We review the application ...
Mineralogical and biological controls on the Fe/Ca and Mn/Ca ratios of lacustrine carbonate allochems
(Elsevier, 1983-01)
The Fe/Ca and Mn/Ca ratios of lacustrine carbonate allochems are primarily controlled by the mineralogy of the carbonate polymorph. However, these ratios are subject to a significant degree of biological control among ...
Binding of hydrophobic ligands to plant lectins: Titration with arylaminonaphthalenesulfonates
(Elsevier, 1983-07-15)
Binding of the Hydrophobic ligands 1,8-anilinonaphthalenesulfonic acid (ANS) and 2,6-toluidinylnaphthalenesulfonic acid (TNS) to a variety of plant lectins was studied by lectin-induced alteration of the fluorescence spectra ...
The Ozonolysis of Haloalkenes in Solution
(WILEY‐VCH Verlag, 1983)
A review of the ozonolysis of low molecular weight haloalkenes in solution is presented. The reaction products from the fluoroethylene series are discussed in detail. Secondary ozonides can be obtained from these alkenes ...
Isolation and characterization of a glycopeptide from human senescent erythrocytes
(Elsevier, 1983-08-16)
A glycopeptide (called "senescence-factor glycopeptide", SF-G) has been isolated from a tryptic digest of human erythrocytes by specific adsorption and elution from immobilized peanut lectin. SF-G was detectable in old but ...
Glucocorticoid receptor stabilization: Relative effects of molybdate ion on inactivation by alkaline phosphatase and phospholipase A2
(Elsevier, 1983-01)
Glucocorticoid receptors in cytosol preparations from rat liver or mouse L cells are inactivated by phospholipase A2 or calf intestine alkaline phosphatase. Molybdate ion, an inhibitor of a variety of phosphatase enzymes, ...