Abstract: Centrifugal analyzer and method for staining biological or non-biological samples in microgravity, wherein the method utilizes an increase in weight of a fluid sample as a function of g-load, to overcome cohesive and frictional forces from preventing its movement in a preselected direction. Apparatus is characterized by plural specimen reservoirs and channels in a slide, each channel being of differing cross-section, wherein respective samples are selectively dispensed, from the reservoirs in response to an imposed g-factor, precedent to sample staining. Within the method, one thus employs microscope slides which define channels, each being of a differing cross-section dimension relative to others. In combination therewith, centrifugal slide mounting apparatus controllably imposes g-vectors of differing magnitudes within a defined structure of the centrifuge such as a chip array.

Abstract: A balanced free-standing juvenile safety gate characterized by its facile placement and displacement in a passageway wherein adjustably connected frame sections include a hinge frame and frame supporting platform with a hinge standpost being fixed to the platform; an extendible latch frame attached to the hinge frame with a latch handle atop said frame section, said latch handle having intermediate pivot connection to the frame section by pivoted connectors which in turn join the latch handle to a lever yoke, the lever yoke being connected at a lower end to a moveable bracket, whereby, upon closure of the latch handle transverse movement of bracket and pressure bar is forced into registry with one extreme of the passageway, against resistance of the standpost on an opposite extreme of the passageway; a caster supports the latch frame in extension of the hinge frame, during positions of passageway closure and opening.