Abstract: A tapered roller bearing includes an inner ring, an outer ring, a plurality of tapered rollers, and an annular cage having a plurality of cage pockets. Each of the cage pockets has a retainer configured to permit displacement of the tapered roller in a direction with a component in a radial direction, and restrict detachment of the tapered roller to an outer side in the radial direction by bringing the retainer into contact with a part of an outer peripheral surface of the tapered roller. The cage pockets include a first cage pocket having a first retainer with which a permissible amount of the displacement is a first displacement amount, and a second cage pocket having a second retainer with which the permissible amount of the displacement is a second displacement amount smaller than the first displacement amount.

Abstract: An inner ring unit includes an inner ring, a plurality of tapered rollers, and a cage having an annular shape. The cage includes a plurality of cage bars. The cage includes a stopper portion that is provided to protrude from an axial intermediate portion of the cage bar in the circumferential direction of the cage and configured to hinder the tapered rollers from falling off toward a radially outer side by bringing an axial intermediate portion on an outer peripheral surface of each tapered roller housed in a pocket into contact with the stopper portion. The axial intermediate portion on the outer peripheral surface of the tapered roller is a portion that is disposed on a one axial side and on the radially outer side of the tapered roller with respect to the center of gravity of the tapered roller.

Abstract: A tapered roller bearing includes an inner ring, an outer ring, a plurality of tapered rollers, and an annular cage having a plurality of cage pockets. Each of the cage pockets has a retainer configured to permit displacement of the tapered roller in a direction with a component in a radial direction, and restrict detachment of the tapered roller to an outer side in the radial direction by bringing the retainer into contact with a part of an outer peripheral surface of the tapered roller. The cage pockets include a first cage pocket having a first retainer with which a permissible amount of the displacement is a first displacement amount, and a second cage pocket having a second retainer with which the permissible amount of the displacement is a second displacement amount smaller than the first displacement amount.

Abstract: An inner ring unit includes an inner ring, a plurality of tapered rollers, and a cage having an annular shape. The cage includes a plurality of cage bars. The cage includes a stopper portion that is provided to protrude from an axial intermediate portion of the cage bar in the circumferential direction of the cage and configured to hinder the tapered rollers from falling off toward a radially outer side by bringing an axial intermediate portion on an outer peripheral surface of each tapered roller housed in a pocket into contact with the stopper portion. The axial intermediate portion on the outer peripheral surface of the tapered roller is a portion that is disposed on a one axial side and on the radially outer side of the tapered roller with respect to the center of gravity of the tapered roller.

Abstract: In a bender (e.g., press brake), work (plate material) can be bent by a bending tool composed of a pair of punch and die. A position detector (17) mounted on a movable side of the bending tool generates a limit point pulse (ULi) whenever the tool reaches a limit point. A timer (29) measures a time interval between the two limit point pulses (ULi). A time compare discriminate section (31) compares the time interval measured by the timer with a reference time interval (TR), and further discriminates the current bending as a trial bending when the time interval is longer than the reference time but as an actual bending when shorter than the reference time. Further, an arithmetic section 33 calculates a sum total number of times of the bending and the sum total time period spent in the bendings, separately in both of the trial and actual bendings. The obtained bending data are displayed or recorded to obtain an accurate man-hour in the bending processing.

Abstract: In a bender (e.g., press brake), work (plate material) can be bent by a bending tool composed of a pair of punch and die. A position detector (17) mounted on a movable side of the bending tool generates a limit point pulse (ULi) whenever the tool reaches a limit point. A timer (29) measures a time interval between the two limit point pulses (ULi). A time compare discriminate section (31) compares the time interval measured by the time with a reference time interval (TR), and further discriminates the current bending as trial bending when the time interval is longer than the reference time but as an actual bending when shorter than the reference time. Further, an arithmetic section 33 calculates a sum total number of times of the bending and the sum total time period spent in the bendings, separately in both of the trial and actual bendings. The obtained bending data are displayed or recorded to obtain an accurate man-hour in the bending processing.

Abstract: An antiviral polysaccharide purified from an extract prepared by extracting Spirulina cells with hot water, having the following properties:(1) it comprises rhamnose, glucose, fructose, ribose, galactose, xylose, mannose, glucuronic acid and galacturonic acid;(2) it exhibits an absorption at 480 nm in phenolsulfuric acid reaction; and(3) it has a molecular weight of 250,000 to 300,000 Daltons as determined by gel filtration; and pharmaceuticals, food and feed, comprising said antiviral polysaccharide.

Abstract: A novel hydrophobic vitamin B.sub.12 derivative represented by the formula: ##STR1## wherein R represents an alkyl group having 2 to 17 carbon atoms, and X represents a cyano group, a hydroxyl group, an alkyl group or a 5'-deoxyadenosyl group. Since the derivative is hydrophobic, it can be taken up by an organism by thermodynamic diffusion, a passive transport, without an active transport.

Abstract: An image pickup apparatus has only a few line memories (5, 6, 7), a change-over switch (4, 104) for selectively supplying input signals to the line memories and a selector (8, 108) for selectively taking data stored in the line memories and stores data of a desired part of the picture to be enlarged or reformed in accordance with a predetermined procedure, and interpolation of the stored data of the scanning lines is sequentially performed, thereby enlarging or reforming the desired part of the picuture without lowering quality of the image.

Abstract: A process for producing vitamin B.sub.12 by the fermentation technique which comprises cultivating a vitamin B.sub.12 -producing microorganism belonging to the genus Propionibacterium in a culture medium containing a carbon source and a nitrogen source, and collecting vitamin B.sub.12 accumulated in the cells of the microorganism; characterized in that(1) the cultivation is carried out while adding an alkali at suitable times to the cultivation system so that during the cultivation, the cultivation system is maintained at a pH in the range of about 5 to about 7.5, and(2) the cultivation is carried out while adding a carbon source portionwise to the cultivation system nearly at the same time as the addition of the alkali,(3) provided that when a vitamin B.sub.12 -producing microorganism having resistance to propionic acid is used as the microorganism, the portionwise addition of the carbon source in (2) can be omitted. Also disclosed are propionic acid-resistant, vitamin B.sub.

Abstract: A process for separating porphyrins, which comprises(1) adjusting the pH of the liquid phase of a culture broth containing at least two porphyrins to about 2.5 to about 4 and collecting the resulting solid containing the porphyrins,(2) either (a) preparing an acidic aqueous solution of said solid and adjusting the pH of its liquid phase left after removal of insoluble matter to about 6 to about 8 to form an aqueous solution containing the porphyrins, or (b) preparing an acid-containing lower alcohol solution of said solid, adjusting the pH of its liquid phase left after removal of insoluble matter, adding water in an amount at least twice the amount of the solution to precipitate lower alkyl esters of the porphyrins, collecting the precipitates and dissolving them in an organic solvent to form an organic solvent solution of the porphyrin esters,(3) contacting the solution obtained in (a) or (b) in step (2) with a copolymer having a surface area of at least about 700 m.sup.

Abstract: A process for separating vitamin B.sub.12 in pure form, which comprises bringing a vitamin B.sub.12 -containing liquid containing impurities into contact with a resin selected from the group consisting of (A) a divinylbenzene/styrene copolymer having a mode pore diameter of at least about 200 A and a total pore volume of more than 0.6 ml/g, and (B) a copolymer of divinylbenzene/styrene/an unsaturated alkyl ester of an aromatic polycarboxylic acid represented by the formula ##STR1## wherein R represents a C.sub.3 -C.sub.10 unsaturated alkyl moiety having a carbon-carbon double bond and n is 2 or 3, said copolymer (B) having a surface area of at least about 700 m.sup.2 /g, to cause vitamin B.sub.12 to be adsorbed to said resin, and eluting the vitamin B.sub.12 with an eluent, and collecting the active eluate.

Abstract: A process for producing uroporphyrin III, which comprises cultivating a uroporphyrin III-producing microorganism of the genus Arthrobacter in a culture medium containing a carbon source, a nitrogen source and a mineral, and recovering uroporphyrin III from the culture broth.

Abstract: A process for separating and recovering coproporphyrin and uroporphyrin from a culture broth containing them, which comprises(1) adjusting the pH of the liquid phase of a cultured broth containing coproporphyrin and uroporphyrin to a range of 2.5 to 4 to form a solid precipitate containing coproporphyrin and uroporphyrin and collecting the precipitate,(2) preparing an aqueous alkaline solution of the solid precipitate obtained in step (1), adjusting the pH of the solution to a range of more than 4 but not over 6, to form a solid precipitate containing coproporphyrin, and collecting the precipitate, and(3) adjusting the pH of the residue left after collection of the precipitate in step (2) to a range of 1 to 4 to form a solid precipitate containing uroporphyrin and collecting the precipitate.The active porphyrin components thus obtained have physiological activity in regulating various organisms of the body, such as, for example, improving the function of the liver.

Abstract: In a process for producing coproporphyrin III which comprises cultivating a coproporphyrin III-producing microorganism of the genus Arthrobacter in a culture medium containing a carbon source, a nitrogen source and a mineral and recovering coproporphyrin III from the culture broth, the improvement wherein the culture medium contains at least 0.1 g, per liter of the culture medium, of L-cystine, at leas 0.5 g, per liter of the culture medium, of Mg.sup.++, or both; and coproporphyrin III-producing microoganisms.

Abstract: A process for fermentatively producing vitamin B.sub.12, which comprises cultivating a vitamin B.sub.12 -producing microorganism belonging to at least one of the genus Arthrobacter and the genus Propionibacterium in the presence of a pre-cultivation product of a vitamin B.sub.12 -producing microorganism belonging to at least the other genus, and separating vitamin B.sub.12 from the culture broth.

Abstract: A process for producing vitamin B.sub.12, which comprises cultivating a vitamin B.sub.12 -producing micro-organism of the genus Arthrobacter under aerobic conditions in a culture medium containing at least one compound selected from the group consisting of alcohols with 2 or 3 carbon atoms and ketones, and separating vitamin B.sub.12 from the culture broth.

Abstract: A process for producing glucose isomerase which comprises cultivating a glucose isomerase-producing bacterium belonging to the genus Corynebacterium under aerobic conditions in a culture medium containing carbon sources and nitrogen sources and separating the glucose isomerase-containing cells from the culture broth, and a process for producing fructose which comprises contacting glucose in an aqueous medium with the glucose isomerase-containing cells of a bacterium belonging to the genus Corynebacterium or glucose isomerase separated therefrom.