Abstract: A scanner for positron emission computed tomography comprising a rotary member rotatable within the plane of a slice about an axis lying perpendicular to this plane and having means for accommodating a subject for examination, a drive means for rotating this rotary member within the plane of slice, and a plurality of radiation detectors provided on the rotary member so as to substantially face each other relative to the subject to be examined, in which the radiation detectors are disposed so that at least some of them are either positioned with irregular spacing relative to each other, or positioned at irregular distances from the axis of rotation.

Abstract: A phase synchronizer for obtaining a signal which is phase synchronized with respect to another signal which has passed through a transmission system after originating at a signal source, the phase synchronizer comprising a variable phase shifter responsive to the output signal of the signal source for shifting the phase thereof in response to a control signal applied thereto; a phase comparator responsive to the signal which has passed through the transmission system and the output signal of the variable phase shifter to provide an output signal indicative of the phase difference between the two signals applied thereto; a low-pass filter responsive to the phase comparator output signal to provide the control signal for the variable phase shifter so that the phase of the output signal of the variable phase shifter follows the phase of the transmission system output signal.

Abstract: A label strip with easily removable self-adhesive labels adhering in series to one side of a carrier strip for use in label printing and dispensing apparatuses which are equipped with a pull-off device gradually feeding the labels, the improvement wherein the carrier strip is continuous with respect to the length and width thereof, the carrier strip covering at least the greater part of the self-adhesive layer on the labels and a continuous backing strip disposed adjacent the side of the carrier strip opposite the one side thereof in a plane separate from and parallel to the carrier strip, the backing strip being bonded with the combination of the carrier strip and the self-adhesive labels.

Abstract: A method and apparatus for processing a frontal chest radiograph in a radiographic image copying system in which an original radiograph is scanned with a scanning light beam and the light transmitted through the radiograph is detected by a photodetector which gives an output to be processed and used for recording a visible image on a recording medium. The frontal chest radiograph is gradation processed. The gradation processing is characterized in that the density at the boundary of the heart and the lungs of the image on the recording medium is lowered to lower the contrast of the heart and raise the contrast of the lungs.

Abstract: Method and apparatus for producing a variable intensity pattern of sputtering material on a substrate by providing a mask having a patterned opening therein between the cathode of a sputtering device and the substrate to be coated, the mask being so positioned as (a) to not affect the plasma over the cathode surface and (b) to be out of contact with the substrate surface, there being relative movement between at least the cathode and the substrate. The substrate may be either flat, curved or tubular, for example, there also being described apparatus and a method of making a broad band, dipole antenna.

Abstract: A radiation image recorded in a stimulable phosphor is read out by stimulating the stimulable phosphor by use of stimulating rays such as visible light or infrared rays. Upon stimulated, the stimulable phosphor emits light which is detectable by a photosensor. The radiation image readout device includes a photosensor for detecting the light emitted by the phosphor, and a reflecting optical element like a mirror located between the phosphor and the photodetector for reflecting stimulating rays advancing between the phosphor and the photosensor toward the phosphor. The reflecting optical element has a very small size not to intercept the light emitted by the phosphor and detected by the photosensor as much as possible.

Abstract: A method and apparatus for processing a radiation image in a radiation image recording system in which a stimulable phosphor is stimulated with a scanning stimulating ray and the light emitted from the stimulable phosphor upon stimulation by the stimulating ray is detected by a photodetector which gives an output to be processed and used for recording a visible image on a recording medium. The radiation image of the frontal chest is gradation processed. The gradation processing is characterized in that the density between the densities of the spine and the heart of the image on the recording medium is lowered to lower the contrast of the spine and raise the contrast of the heart and the lungs.

Abstract: Within an opening in a wall is placed a window or door having a frame, consisting of metal and plastic interlocked extrusions with a polyurethane core therein. The polyurethane core prevents penetration of condensate therethrough to the underlying casement consisting of wood studs, sheeting and dry wall.Within the frame is a sash comprised of a set of metal and plastic extrusions which are interlocked and also form a cavity with a solid polyurethane core. The two extrusions have glazing beads to receive a glazing consisting of a double pane of glass separated to provide an insulating dead air space.

Abstract: A split-band, redundant amplifier system is disclosed. The system has at least two identical amplifiers (1, 2) each capable of amplifying signals having frequencies within a predetermined pass band. A first filter (3) divides signals into at least two contiguous split-bands within the pass band. A second filter (5) combines the signals in the split-bands. In normal operation, the amplifiers are connected in parallel between the two filters, and each amplifier amplifies signals in only one of the split-bands. Switches (SW1, SW2, SW3, SW4, SW5, SW6, SW7, and SW8) are connected to the amplifiers and the filters and are operative to selectively connect an input signal to the first filter or to one of the amplifiers and to selectively connect the output of the second filter or the output of one of the amplifiers to the output of the system. A sensing circuit (7) is connected to the outputs of each of the amplifiers and detects when an amplifier becomes inoperative.

Abstract: An image is recorded on the recording layer of an image recording material by exposing the photoconductor thereof to imagewise light and applying a voltage there-across. The image recording material is composed of(a) a recording medium consisting of a support base at least one surface of which is electrically conductive and a recording layer provided on the electrically conductive surface of the support base containing an oxidizable or reducible compound, and(b) a photoconductor disposed in contact with the surface of the recording layer.The photoconductor has a specific resistance of not more than 10.sup.9 .OMEGA.cm and causes the effect of electric rectification at the boundary between itself and the recording layer.

Abstract: An intensifying screen having high physical durability and chemical resistance in which a curable resin is used as a resinous binder of a radioluminescent phosphor can easily be manufactured by employing an ultraviolet radiation-curable resin composition as the resinous binder. A dispersion comprising the ultraviolet radiation-curable resin composition and the radioluminescent phosphor dispersed in the composition is applied to the surface of a support to form a coating on the support, and the coating is cured by exposure to ultraviolet radiation to form a fluorescent layer on the support.

Abstract: A cutting roller 2 of a glass filament chopping apparatus mounts a plurality of spaced, axially parallel cutting blades 19 held in receiving grooves 20 by retainer strips 21. The peripheral flange surfaces 24, 25 of the cutting roller on the opposite ends of the roller drum 18 are raised to almost the radius of the cutting blade edges, and serve as driving engagement surfaces when the rotating cutting roller is biased into contact with a feed roller 1.

Abstract: The tendency for a sample-and-hold stereo multiplex demodulator having sampling pulses with low duty ratios to deemphasize the high frequency characteristics of the demodulated right and left signals is compensated for by connecting a pair of amplifiers to the right and left outputs and emphasizing the high-frequency characteristics thereof only during stereo reception.

Abstract: A hand-held labelling apparatus for printing, dispensing and applying self-adhering labels, having a housing provided with a handle and having two side walls consisting of sheet metal and held in spaced relation.Each side wall of the said housing comprises two parallel and free edges which are opposite one another.Casing or sheathing walls consisting of synthetic plastics are capable of being pushed over the outsides of each side wall. The said casing walls comprise flanges which engage over the free edges of the side walls.

Abstract: A phosphor for color television surface-treated with zinc hydroxide so that zinc hydroxide attaches thereto in an amount below 0.7 part by weight per 100 parts by weight of the phosphor.Phosphor slurries for production of phosphor screens prepared from the phosphor have improved light-exposure sensitivity at the formation of and produced from these slurries phosphor screens showing less color mixing.

Abstract: A scanning device for use in axial transverse tomographic apparatus, arranged so that a support which carries thereon an X-ray source and its associated detector is mounted on a rotary disk for reciprocating linear movements, and that this rotary disk is caused to rotate through a certain angle at a time for each change of direction of the linear movements of the support. The support is moved at a plurality of different speeds. Either a single or a plurality of damping means are arranged so as to reduce the speed of movement of the support and then to accelerate this speed in association with the movement speed thereof at any changing of direction of movement of this support.

Abstract: In a method of recording a radiation image by use of a stimulable phosphor in which the stimulable phosphor is first exposed to an imagewise radiation to store the energy of the radiation and then is exposed to stimulating rays to emit light in accordance with the energy stored therein, the instantaneous emission of light emitted upon exposure of the stimulable phosphor to the radiation is detected to measure the level of the energy of the radiation stored in the phosphor. The instantaneous emission is detected by a photosensor which is located behind the phosphor. The output of the photosensor is utilized to control the density and/or contrast of the final image recorded on a photographic film which is recorded by use of the light emitted by the phosphor upon stimulated.

Abstract: A device for indicating the reaction of pulse rate to exercise. In preferred forms, the device measures the pulse rate at rest (R.sub.1), the elevated pulse rate (R.sub.2) resulting from the performance of a specified amount of work, and the recovery pulse rate (R.sub.3) at a specific time after ceasing exertion. The device includes calculating means for directly calculating a fitness index from the three pulse rates according to a chosen one of various formulae. The device also provides a visual or audible pulse output as a timing signal for performing the specified exercise.