Abstract: The present invention is intended to feed components stably and speedily in a component feed apparatus whereby components stored in the form of a taped component, while being transferred along a component feed guide, are sequentially supplied to a predetermined position to be mounted to a printed board. In order to accomplish the object, a magnet is set in the vicinity of a slit of a component feed guide at which a covering tape is separated from the taped component. The magnet magnetically attracts the component, to thereby prevent the component from being forcibly dragged together with the covering tape when the covering tape is separated. Quick and stable supply of the component can be accordingly ensured.

Abstract: An automatic fold-up umbrella for easier closing has a frame having an umbrella shaft and a plurality of radial ribs. A canopy supported on the radial ribs. Elastic bodies are sewn up into every other half peripheral edge portion of the canopy to be located between the rib and a folding line of a partial canopy along an intermediate portion between the neighboring ribs. Alternatively a shape-metal alloy is sewn into one of the partial canopies so that when the umbrella is closed, the canopy can be automatically, spirally or volutely rolled in to form a curved or spiral state from the folding lines.

Abstract: Provided by the present invention are a human prorenin profragment N-terminated peptide antibody capable of specifically recognizing a peptide containing at least 15 amino acid residues from the first leucine residue to the 15th arginine residue in the N-terminated peptide of the human prorenin profragment and a complex of the same with human prorenin. The antibody can be used as a prorenin assay reagent. The human prorenin profragment N-terminated peptide antibody is useful as a reagent for the assay of human prorenin in blood.