Abstract: Disclosed herein is a purification method characterized by adding a chitosan powder or a chitosan-coated substance, and optionally further adding a silica sol to liquor and filtering the mixture by a filter machine to remove unsaturated fatty acids, compounds of unsaturated fatty acids with metal ions, or fusel oil from the liquor.

Abstract: Disclosed herein is a purification method characterized by adding a chitosan powder or a chitosan-coated substance, and optionally further adding a silica sol to liquor and filtering the mixture by a filter machine to remove unsaturated fatty acids, compounds of unsaturated fatty acids with metal ions, or fusel oil from the liquor.

Abstract: An activated carbon composition which is less apt to cause dusting, has satisfactory handleability, and is excellent in decoloration performance, etc. The composition is characterized by comprising activated carbon and cellulose which have been coated with chitosan. Preferably, the composition is one obtained by precipitating chitosan from a chitosan solution in the presence of activated carbon and cellulose to thereby coat the activated carbon and cellulose with the chitosan. The composition is further characterized by containing the cellulose and the chitosan in amounts of 1 to 30 pts.wt. and 0.1 to 15 pts.wt., respectively, per 100 pts.wt. of the activated carbon.

Abstract: A mobile X-ray apparatus for a circuit examination, which includes an X-ray tube with a collimator, a mobile base having a pair of driven wheels, a holder attached and movable to the base, the holder holds the X-ray tube. A motor driver is disposed in the base which drives the wheels. An operation handle bar is disposed in the base providing a signal for driving the motor driver. An input means, separated from the handle bar, provides a signal for driving the motor driver slightly. A controller controls the motor driver according to the signal from the handle bar or the input means.

Abstract: In a mobile type X-ray apparatus, an input shaft of a cyclo-decelerator is connected to one end of a rotational shaft of a motor, and the other end of the rotational shaft is connected to an encoder and an electromagnetic brake. The cyclo-decelerator is attached to a frame. Also, a bearing is fitted in the frame, and a wheel hub is fitted between the bearing and a motor output shaft. A wheel is fixed to the wheel hub. By the cyclo-decelerating mechanism, a transmission of power is carried out among contact surfaces of an eccentric cam, epitrochoid teeth and rollers, so that the apparatus has a compact structure with a low noise and no backlash.

Abstract: In a cassette tray for radiography, a positioning plate is provided on a rear surface of a tray, and the positioning plate includes grooves corresponding to cassette sizes. A stopper for holding a cassette has a spring, and engaging pieces which engage the groove and formed at a lower end of a slider moving vertically between a front plate of the tray and the positioning plate. When the engaging pieces of the stopper engage the grooves, the stopper projects from the front surface of the tray to hold the cassette at the position. When the engaging pieces of the stopper do not engage the grooves, the stopper is located on the same plane as the front plate surface of the tray. If the stopper is pressed and moved along the surface of the tray, the position for the cassette to be used can be selected. Accordingly, the cassette tray can securely hold various-sized cassettes, and the attaching operation therefor can be carried out easily in a short period of time.

Abstract: In a mobile type X-ray apparatus, an input shaft of a cyclo-decelerator is connected to one end of a rotational shaft of a motor, and the other end of the rotational shaft is connected to an encoder and an electromagnetic brake. The cyclo-decelerator is attached to a frame. Also, a bearing is fitted in the frame, and a wheel hub is fitted between the bearing and a motor output shaft. A wheel is fixed to the wheel hub. By the cyclo-decelerating mechanism, a transmission of power is carried out among contact surfaces of an eccentric cam, epitrochoid teeth and rollers, so that the apparatus has a compact structure with a low noise and no backlash.

Abstract: A mobile device for an X-ray apparatus is formed of a freely rotatable hollow column disposed on a mobile base, a holding section for holding an X-ray tube in a vertical direction along the column, and a counter weight connected through a wire to the holding section to be suspended inside the column. A column rotating section formed of a bearing portion and a rotational shaft with a hollow part is disposed in the mobile base. A lower part of the counter weight is provided with a convex portion which enters into the hollow part of the rotational shaft. When the holding section for the X-ray tube is elevated to the highest point, the counter weight is lowered to the lowest point, wherein the convex portion of the counter weight enters into the hollow part of the rotational shaft. Thus, a volume of the hollow part can be utilized as a part of the volume of the counter weight to allow the counter weight to be made of iron and the like, other than lead.

Abstract: A mobile medical X-ray apparatus has the entire weight of its X-ray source and X-ray detector as well as their supporting arm supported by a vertically movable support column on a mobile table. A lever and a member for supporting a normally compressed spring are attached to the table rotatably, and they are also connected to each other rotatably with respect to each other around a connector shaft such that the force of the spring tends to rotate the lever in the direction of causing the support column to move upward. The spring constant of the spring and the relative positions of the lever and the spring-supporting member are determined such that the support column can be moved manually upward or downward.

Abstract: A radiographic apparatus includes a C-shaped arm for supporting an X-ray tube at one end thereof and an image receiving unit at the other end, and an arm holder for slidably supporting the C-shaped arm for rotation about a center of an arc thereof. The arm holder has a hollow shaft supported therein to extend substantially parallel to an axis of the center of the arc, and a take-up drum supported on the hollow shaft. A drum drive device is operable in response to rotation of the C-shaped arm to rotate the take-up drum. A plurality of cables are connected to the X-ray tube and the image receiving unit, respectively. The cables are gathered into a bundle adjacent the X-ray tube or the image receiving unit, the bundle being guided by an outer periphery of the C-shaped arm to be wound on the take-up drum. The bundle further extends through the take-up drum and the hollow shaft into and then out of the hollow shaft.

Abstract: A mobile X-ray apparatus having a carriage driven in a direction in which forces are applied to a pair of right and left control bars operable without influencing each other. The right and left control bars are arranged symmetrically with respect to the direction of movement of the carriage. Each control bar is supported to be pivotable independently of the other in a substantially horizontal or vertical plane. A neutralizing mechanism is provided for maintaining each control bar in a neutral position when the control bar is free from an external force. Position detectors are disposed adjacent a forward position and a rearward position of each control bar, respectively, to detect displacement thereof. Each control bar has an equivalent capacitor structure having an electrostatic capacity variable when the operator grips the control bar. This structure provides a safety mechanism for allowing the carriage to move only when the operator grips the control bar.

Abstract: A silicon-containing polymer having comb-shape structure comprising a unit of an organopolysiloxane as the main chain and a vinyl polymer as the side chain of the following formula: ##STR1## wherein R.sup.1 is C.sub.1-4 alkylene, R.sup.2, R.sup.3 and R.sup.4 are each C.sub.1-4 alkyl, R is H or methyl, X.sup.1 is hydroxycarbonyl, C.sub.2-5 alkoxycarbonyl, C.sub.3-8 cycloalkyl-oxycarbonyl or phenyl, n is 1-100,000, R.sup.5 is C.sub.1-4 alkyl or phenyl, X.sup.2 is H, C.sub.1-4 alkyl, phenyl, chlorine, C.sub.1-4 alkoxysilyl, or C.sub.1-4 alkyl which is substituted by one to three of --NH.sub.2, --NH--, --SH, --CN or F, l is 2-20, m is 0 or 1-10, which has excellent migration property and is useful as agents for giving water-repellency, adhesion, surface activity, etc. in paints or other compositions, and an intermediate macromonomer, and process for the production thereof.

Abstract: A vinyl polymer having alkoxysilyl groups at both terminals of the formula: ##STR1## wherein R.sup.1 and R.sup.2 are the same or different and are each an alkyl having 1 to 4 carbon atoms, R.sup.3 is an alkylene having 1 to 4 carbon atoms, n is an integer of 0 to 2, Z is at least one group of the formulae: ##STR2## (wherein R.sup.4 is hydrogen or methyl, Y.sup.1 is an ester residue having 2 to 11 carbon atoms, phenyl or a halogen, Y.sup.2 is an ester residue having 2 to 6 carbon atoms or a halogen, and Y.sup.3 is fluorine or chlorine atom), m is 10 to 10,000, which has excellent physical strength and is useful as an ingredient for paints, adhesives, sealing agents, and tacking agents, and an intermediate therefor, and a process for the production thereof.

Abstract: A polyurethane adhesive comprising(a) a thermoplastic polyester urethane rubber which is grafted with at least one of the compounds selected from the group consisting of acrylic acid, an acrylic ester, methacrylic acid and a methacrylic ester,(b) a chlorinated rubber, and(c) an isocyanate compound as a crosslinking agent, and optionally(d) a polyoxyalkylene ether polyol having 2 or more ether groups in the molecule, and/or(e) a rosin resin and/or a rosin resin derivative,which is an organic solvent solution type, and exhibits excellent adhesion particularly in case that at least one of the substances to be adhered is a soft polyvinyl chloride sheet or film.

Abstract: A two-part adhesive which comprises(i) as the main ingredient an emulsion consisting essentially of (a) an aqueous emulsion of a polymer or copolymer obtained from an essential monomer of an adduct of a tertiary amino group-containing acrylic or methacrylic acid ester and an epihalohydrin, (b) a tackifier resin selected from the group consisting of a petroleum hydrocarbon resin, a phenolic resin, a terpene resin, a rosin resin, a coumarone resin, and a coumarone-indene resin, and (c) an epoxy compound containing two or more epoxy groups in the molecule; and(ii) a curing agent selected from a primary or secondary amino group-containing compound. The adhesive is particularly useful for preparing automobile interior decorations, such as inside trims (e.g. doors, pillars), instrument panels, formed ceiling, and console box.