Attempts to resolve relationships among major groups of birds from DNA sequences have been plagued by the problem of apparent long branches connected by short internodes (Sibley and Ahlquist, 1990) and the difŽculties of sampling a large number of taxa in one study. A recent study of relationships among major avian lineages based on complete mitochondrial DNA sequences (Mindell et al., 1997, 19...

The crystal structure of altrenogest has been solved and refined using synchrotron X-ray powder diffraction data, optimized density functional techniques. Altrenogest crystallizes in space group P 2 1 (#19) with a = 7.286 916(16), b 10.580 333(19), c 22.266 08(7) Å, V 1716.671(6) Å 3 , Z 4 at 295 K. Thermal expansion between 113 K is anisotropic. An O–H⋯O hydrogen bond links the molecules into ...

This study analyses the joint system of Middle Miocene Osumi granodiorite batholith in southern Kyushu, Southwest Japan. The analysis included 916 joints at 96 localities covering northern, middle, and domains exposed area batholith. Two major sets steep striking NNW ENE a minor set gentle are recognized northern middle domains. further NS EW with domain. Previous paleomagnetic studies indicate...