Showing papers by "Claude Bouchard published in 1978"

Skeletal age and submaximal working capacity in boys.

Abstract: SummarySkeletal age (SA) and V˙o2 at a heart rate of 130 (V˙o130) during work on a bicycle ergometer were measured in 237 boys 8–18 years of age. Analysis indicates that V˙o130 is well correlated with SA, but also is equally well correlated with chronological age (CA), height and body weight. Age-specific correlations show that V˙o130 is associated with SA from 12 through 16 years of age. Partialing out SA results in a significant decrease in the correlations of either height or weight with V˙o130 only in the 12–16 year subgroup. The total common variance explained in V˙o130 when regressed over CA, height and weight is affected by the presence of SA only in the 12–16 age subset. In spite of the high degree of multicollinearity among the independent variates, correlation data seem to indicate that SA and V˙o130 have a slightly higher degree of relationship circumpuberally, i.e. between 12 and 16 years of age.

Electron multiplier device

Abstract: OF THE DISCLOSURE An electron multiplier device formed of the combination of a support made of high temperature-resisting electrically-insulating ceramic material and of a layer of secondary electron emitting semi-conducting glass material fused to the inner wall of the ceramic material; the multiplier device is further characterized in that the ceramic material and the glass material have substantially the same coefficient of expansion and that the support has an inner channel, the ratio of channel length to diameter being at least about 70; the glass material is deposited by flowing molten through the channel under gas pressure and cooling.