Cluster analysis is used to produce a small number of job contours more homogeneous in job quality than standard occupation and industry groups. The results indicate a six-contour job structure that is consistent with dual and tripartite labor market segmentation frameworks. This classification scheme is used to examine the effects of employment restructuring in the 1980's by race and gender. W...

Imperatorin (IMP) is the major active ingredient in many common medicinal herbs. We examined the irreversible inhibitory effect of IMP on CYP2B6. IMP produced a timeand concentrationdependent inactivation of CYP2B6. About 70% of activity of CYP2B6 was suppressed after its incubation with 1.5 mM IMP for 9 minutes. KI and kinact were found to be 0.498 mM and 0.079 min , respectively. The loss of ...

We used videography to investigate direct lateral maneuvers, i.e. ‘sideslips’, of the hawkmoth Manduca sexta. M. sexta sideslip by rolling their entire body and wings to reorient their net force vector. During sideslip they increase net aerodynamic force by flapping with greater amplitude, (in both wing elevation and sweep), allowing them to continue to support body weight while rolled. To exec...

In female rats, food intake is reduced during the period in the estrous cycle when the rat is sexually receptive and ovulation is imminent (Wade and Gray, 1979). By contrast, food intake is increased during lactation in the postpartum period (Linden et al, 1990) and sexual behaviour and ovulation are inhibited (Sodersten et al, 1983). There are several examples demonstrating that the neuroendoc...

In the germarium of the Drosophila ovary, germline cysts are encapsulated one at a time by a follicular epithelium derived from two follicle stem cells (FSCs). Ovaries in flies mutant for the serine/ threonine kinase Pak exhibit a novel phenotype, in which two side-byside cysts are encapsulated at a time, generating pairedegg chambers. This striking phenotype originates in the pupal ovary, wher...