Abstract: Methods and systems to control stacked hexapod platforms for use as tools, which function with both high accuracy and high precision are provided. In some embodiments, the methods and systems include a convergence of modern control theory, and machine learning. Furthermore, some embodiments provide control algorithms to carry out autonomous in-space assembly operations using assemblers. Some embodiments provide methods and systems which combine long-reach low precision manipulators and smaller, high-precision assembler with interchangeable tools.

Abstract: An in vitro test for determining the presence of leukocytes in a fecal sample which is sensitive to the numbers of fecal leukocytes typically found in inflammatory diarrheal specimens, by testing the fecal sample with an assay utilizing an antibody for lactoferrin.

Abstract: A method is disclosed for reducing alkali metal chlorate impurities in an aqueous alkali metal hydroxide solution by heating a mixture of the alkali metal hydroxide solution with a hydroxycarboxylic acid or a salt thereof at temperature above about 125.degree. C. and for a period of time sufficient to substantially eliminate the chlorate, the hydroxycarboxylic acid or salt thereof being substantially non-volatile at the heating temperature.

Abstract: A machine and method disclosed for stacking articles adjacent the end of a conveyor having angularly conjoined article panels. The machine comprises a pair of endless chains mounted for orbital movement about opposite sides of a flight path extending from the end of the conveyor. Drive means are provided for orbiting the chains. Stop means are mounted to each of the chains for stopping articles received from the conveyor. Dog means are mounted to the chains adjacent the stops for engaging one of the article conjoined panels in propelling articles received from the conveyor along the flight path. Prop means are also mounted to each of the chains adjacent the dog means for engaging another of the article conjoined panels in at least partially supporting the articles as they are propelled along the flight path.