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M Bax

Publications and source records attributed to M Bax.

At least 73 records · Page 4Linked to original sources
PubMed1989

Quantitative determination of arecoline in plasma by gas chromatography chemical ionization mass spectrometry.

A capillary gas chromatography/mass spectrometry (GC/MS) method for the quantitative analysis of arecoline in plasma has been developed for concentrations in the range 1-50 ng ml-1. Hexadeuterated arecoline was utilized as the internal standard. The removal of drug from plasma was accomplished by a two-step liquid/liquid extraction procedure involving a wash step followed by extraction with 5% triethyl amine in ethyl acetate. The GC/MS determinations were carried out with temperature-programmed capillary GC and ammonia chemical ionization mass spectrometry. The [M + H]+ ions of both analyte and internal standard were monitored at m/z 156 and 162, respectively. The method is linear and has sufficient sensitivity, precision, accuracy and selectivity for analysis of drug levels in human plasma.

Arecoline↗
PubMed1989

Neonatal behavior and early temperament: a longitudinal study of the first six months of life.

Two stable clusters of parent-rated temperamental traits, a "drive" and a "regulatory" cluster, are identified in the first six months of life. The relationship among these clusters and neonatal behavior, measured on the Brazelton Neonatal Behavior Assessment Scale, is considered, and the nature of the clusters compared to the results of other studies with similar methodology. Implications of these results for an interactional theory of early development are discussed.

Attention↗