Changes in neuronal structure are thought to underlie long-term behavioral modifications
associated with learning and memory. In particular, considerable evidence implicates the …

The regular occurrence of a peak due to an unidentified substance (X) in the gas
chromatographic traces obtained from phenolic extracts of urine from human pregnant and …

In this study we measured the accuracy of the following types of cycle ergometer against the
criterion of a dynamic calibration rig (DCR): 35 friction-braked (Monark), 5 research-grade …

2, 3-Dihydropyrane is the dehydration product of a hemiacetal and as such has been shown
to add water1 readily in the presence of a trace of mineral acid yielding an equilibrium …

20-Ketones of the pregnane series and 17-ketones of the androstane series were
preferentially reduced with sodium borohydride in the presence of the 4-en-3-one grouping …

That both hydroxyl groups are secondary has been established by chromic acid oxidation to
the corresponding ketones. The method employed was adapted from that used for the …

According to theliterature, 2-7 A2-cyclohexe-none is available by a variety ofmethods. In at-
tempting to prepare a quantity of this ketone we obtained uniformly poor results with a …

The reaction of dimedone with phenylmagnesium bromide has been previously
investigated. 1 We have now studied the corresponding reaction of dihydroresorcinol (I) …

The components of our rig, which is used for the dynamic calibration of cycle ergometers,
were purchased for $4,080 (USA); interfacing the instrument with a computer and printer …

The Grignard reagent for these substances was prepared from 3-chloro-3'-iodobiphenyl
which was obtained by the following series of reactions: An Ullmann reaction between 1, 3 …