Now showing items 1-10 of 1028
Social interactions between captive adult male and infant lowland gorillas: Implications regarding kin selection and zoo management
(John Wiley & Sons, Inc., 1999)
Interactions between unrelated and related silverback-infant dyads are compared in an attempt to assess the influence that kinship may have on male parental behavior. Observational data were collected on each member of two ...
Two-fluid atmosphere for relativistic stars
(IOP Publishing Ltd, 1999-04-01)
We have extended the Vaidya radiating metric to include both a radiation fluid and a string fluid. This paper expands our brief introduction to extensions of the Schwarzschild vacuum which appeared in 1998 Phys. Rev. D ...
Letter to the Editor
(Kluwer Academic Publishers-Plenum Publishers; Plenum Publishing Corporation ; Springer Science+Business Media, 1999-02)
Effect of AlN and Al2O3 additions on the phase relationships and morphology of SiC Part I Compositions and properties
(Kluwer Academic Publishers; Springer Science+Business Media, 1999-11)
X-ray diffraction was utilized to follow the transformation from β-SiC (3C) to the various α-SiC polytypes in the presence of AlN and Al 2 O 3 additives after hot pressing from 1700 to 2100°C. The 2H- and 6H-polytypes of ...
Naltrexone Reduces Ethanol- and/or Water-Reinforced Responding in Rhesus Monkeys: Effect Depends Upon Ethanol Concentration
(Blackwell Publishing Ltd, 1999-09)
The opioid antagonist naltrexone reduces responding for ethanol. If naltrexone produces this effect by blocking ethanol-induced opioid activity, then naltrexone should reduce responding for ethanol regardless of level of ...
Comparison of garnet-biotite, calcite-graphite, and calcite-dolomite thermometry in the Grenville Orogen; Ontario, Canada
(Springer-Verlag; Springer-Verlag Berlin Heidelberg, 1999-02)
The Elzevir Terrane of the Grenville Orogen in southern Ontario contains metapelites and abundant graphitic marbles that were regionally metamorphosed from the upper greenschist to upper amphibolite facies. Comparative ...
The Stellar Ages of Elliptical Galaxies
(Kluwer Academic Publishers; Springer Science+Business Media, 1999-03)
Integrated broad-band colors and metallic lines cannot discriminate clearly between the effects of age and Z in old stellar populations. Such data are more sensitive to Z than to age. The H β feature provides a way to break ...
Clinical and Economic Effectiveness of an Inpatient Anticoagulation Service
(Blackwell Publishing LtdWiley Periodicals, Inc., 1999-09)
The bicoid -related Pitx gene family in development
(Springer-Verlag; Springer-Verlag New York Inc., 1999-02)