Two established international reference preparations (IRP) for thromboplastins, i.e. RBT/90 (rabbit, plain) and rTF/95 (recombinant human, plain) have been calibrated against each other in a 7-centre exercise performed in 2000. The purpose of the study was to compare the calibration results with those of the original calibration study performed in 1995. The international sensitivity index (ISI)...

This paper reviews the scholarship, primarily but not exclusively historical, concerning women and the U.S. welfare state, scholarship that considers both the impact of welfare programs on the gender system and the contributions of women's activism in the creation of welfare programs. A brief review of the traditional historical scholarship on U.S. welfare suggests the limitations that result f...

The 1981 federal Omnibus Budget Reconciliation Act (OBRA) increased the benefit-reduction rate in the AFDC program, thereby generating possible work disincentives for welfare recipients. This paper reviews the theoretical basis for the existence of such disincentives, provides a statistical framework for their empirical measurement, and reviews critically the studies that have been completed to...

Hormones and neurotransmitters are released when secretory granules or synaptic vesicles fuse with the cell membrane, a process denoted exocytosis. Modern imaging techniques, in particular total internal reflection fluorescence (TIRF) microscopy, allow the investigator to monitor secretory granules at the plasma membrane before and when they undergo exocytosis. However, rigorous statistical app...