Now showing items 111-120 of 121
Stereoselective high-performance liquid chromatographic assay for pirmenol enantiomers in dog plasma
(Elsevier, 1991-12-15)
Pirmenol enantiomers in dog plasma were quantified using a stereospecific high-performance liquid chromatographic method with ultraviolet detection at 262 nm. Racemic pirmenol and internal standard, (+)-propranolol, were ...
A phase variation event that activates conjugation functions encoded by the Enterococcus faecalis plasmid pAD1
(Elsevier, 1991-11)
Enterococcus faecalis cells carrying the conjugative plasmid pAD1 undergo several related changes when induced by the sex pheromone cAD1. Included are the production of novel surface proteins, the formation of cellular ...
Thermodynamic properties of ammonium haloplatinates: II. Heat capacity and thermodynamic functions of deuterated ammonium hexachloroplatinate (ND4)2PtCl6 at temperatures from 5 K to 350 K
(Elsevier, 1991-07)
The heat capacity of deuterated ammonium hexachloroplatinate (ND4)2PtCl6 was measured at temperatures from 5 K to 350 K by adiabatic calorimetry. One λ-shaped anomaly, absent in the undeuterated salt, was found in ...
A quantitative dot-blot immunoassay for integral membrane proteins: Preparation of pancreatic plasma membranes containing apical and basolateral domains
(Elsevier, 1991-01)
Modifications of standard dot-blot immunoassay techniques have been made for the quantitation of integral membrane protein antigens. The modification involves the signal development step, which is performed by using ...
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 ...
Time course of transient behavioral depression and persistent behavioral sensitization in relation to regional brain monoamine concentrations during amphetamine withdrawal in rats
(Springer-Verlag, 1991-04)
This experiment was designed to characterize the withdrawal syndrome produced by discontinuation of treatment with escalating, non-neurotoxic doses of d -amphetamine (AMPH). AMPH withdrawal was associated with both transient ...
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 ...
Nucleotide sequence and expression of the mouse corticotropin-releasing hormone gene
(Elsevier, 1991-06)
The mouse corticotropin-releasing hormone (CRH) gene has been isolated and characterized by DNA sequence analysis. The gene exhibits a structural organization similar to that of the human, rat, and ovine genes with two ...
Quantitative in vivo receptor binding IV: Detection of muscarinic receptor down-regulation by equilibrium and by tracer kinetic methods
(Kluwer Academic Publishers-Plenum Publishers; Plenum Publishing Corporation ; Springer Science+Business Media, 1991-09)
Newly-developed methods for estimation of in vivo binding to neurotransmitter receptors should enable the detection and quantification of physiologic or pathologic changes in receptor numbers. In the present study, both ...
Enzymatic synthesis of sialyl Lex and derivatives based on a recombinant fucosyltransferase
(Elsevier, 1991)
A recombinant human Lewis [alpha](1,3/1,4)fucosyltranferase has been studied for its acceptor substrate specificity and used in the synthesis of sialyl Lex and derivatives.