Abstract: A mixer includes: a casing having an introduction port at an upper portion and having a rotor provided with a blade portion for mixing a material to be mixed, inside thereof; a floating weight which blocks the introduction port; and a floating weight moving mechanism which has a horizontal movement unit capable of horizontally moving the floating weight in a supported state between a delivery position just above the introduction port and a retracted position being lateral to the introduction port, on the upper side of the introduction port, and can move the floating weight separately from the horizontal movement unit from the delivery position to a blocking position at which the floating weight blocks the introduction port.

Abstract: A mixer includes: a casing having an introduction port at an upper portion and having a rotor provided with a blade portion for mixing a material to be mixed, inside thereof; a floating weight which blocks the introduction port; and a floating weight moving mechanism which has a horizontal movement unit capable of horizontally moving the floating weight in a supported state between a delivery position just above the introduction port and a retracted position being lateral to the introduction port, on the upper side of the introduction port, and can move the floating weight separately from the horizontal movement unit from the delivery position to a blocking position at which the floating weight blocks the introduction port.

Abstract: A dust seal structure of an internal mixer including a casing having a mixing chamber defined therein, and a rotor rotating in the mixing chamber for kneading a material, which is charged into the mixing chamber to be kneaded there, comprises a ring-shaped cylinder fitted to a rotor shaft of the rotor and mounted on a peripheral edge of an opening portion of the casing through which the rotor shaft passes, the cylinder being located at the peripheral edge of the opening portion of the casing, and being adapted to urge a ring-shaped sealing member fitted on the rotor shaft in a direction of the rotor shaft to inhibit leakage of the kneading material from the mixing chamber.

Abstract: A method for examining cancer cells by which examination of cancer cells may be carried out simply and efficiently without using an expensive apparatus, and a reagent therefor are disclosed. In the method for examining cancer cells according to the present invention, cancer cells separated from the body, which cells express SF-25 antigen on their surfaces, are bound to magnetic beads utilizing antigen-antibody reaction between the cancer cells and an anti-SF-25 antibody or antigen-binding fragment thereof, and then the magnetic beads are collected by magnetic force, and the cancer cells bound to the magnetic beads are examined.

Abstract: A shearing action of rubber by a rotor wing has a relation to a wing perpendicular component P.sub.z of P (see FIG. 4), and the larger the value of P.sub.z, the larger the shearing action. An agitating action of rubber has a relation to a wing parallel component P.sub.x of P (see FIG. 4), and the larger the value of P.sub.x, the larger the agitating action. In order to maintain the shearing action and the agitating action of rubber at a high level, in an internal rubber mixer a helix angle of a long wing 2 is set in a range of not less than 30.degree. and less than 50.degree.. Further, an axial directional length L.sub.s of a short wing 3 is made larger than that (.delta.) of a cut-off portion of the long wing 2. A rubber flow f-1 is thereby prevented from passing straight through a rotor space portion.

Abstract: 1-(fluoro- or perfluoro lower alkyl-substituted benzoyl)-5-methoxy-2-methyl-1H-indole-3-acetic acid carboxymethyl ester is found to have antiinflammatory and analgestic activity with less side effects on gastrointestinal traces than its homologue, acematacin or indometacin.