Abstract: The invention provides an automatic ligation tool which comfortably and quickly fastens ligature wires to brackets.

Abstract: Novel cephalosporin compounds of formula (I) exhibit potent and broad antibiotic activities against Gram-negative and Gram-positive bacteria and various resistant bacteria: ##STR1##

Abstract: An apparatus for adjusting an orbital radius in a scroll compressor includes transmitting elements driving an orbiting scroll in accordance with the movement of a driving shaft and a stopper controlling the moving range of the transmitting elements with respect to the center of the driving shaft. The transmitting elements, including a bushing, are movably provided between the driving shaft and the orbiting scroll, so as to allow the distance between the center of the driving shaft and the center of the transmitting elements to change. The stopper is assembled to the transmitting elements in order that the position of the stopper is controllable. As for the stopper, there is provided a screw which is fastened into a screw hole formed on one side of the driving shaft or the bushing, thereby limiting movement of the driving shaft or the bushing.

Abstract: A scroll-type compressor comprising an eccentricity adjusting bushing interposed between an orbiting scroll member and a driving shaft in order to prevent a radial leakage of a compressed fluid, a driving pin of the driving shaft being received in an inner opening of the bushing, and stoppers for limiting a rotation of the bushing with respect to the pin to a predetermined extent. The stoppers comprise a plane side surface provided at a side of an inner opening of the bushing and a cutoff plane surface provided at a side of the driving pin. The compressor of this invention provides advantage in that opposite directional rotation of the bushing with respect to the driving pin is limited to an angular range by virtue of mutual interference between the stoppers, thereby causing the change of a radius of orbital movement of the orbiting scroll, that is, a change of a distance between centers of the bushing and the driving shaft to be limited to a desired minute range.

Abstract: This invention discloses a process for the preparation of (.+-.)-4-oxo-1,2,3,6,7,11b-hexahydro-4H-pyrazino[2,1-a]isoquinoline derivatives which comprises conducting an intramolecular cyclization reaction of the compounds of formulas II III in an acid medium.