Abstract: An alpha ray observation device and an alpha ray observation method are provided that can correctly evaluate a signal derived from alpha rays. The alpha ray observation device according to an embodiment includes a device housing 10, an incident window 2, a condenser 3, an optical path changer 4, and a first optical detector 5. The device housing 10 is provided with an opening. The incident window 2 is provided at the opening, and can block beta rays. Emitted light originated by alpha rays caused from the measurement object set outside of the device housing 10 enters the inside of the device housing 10 through the incident window 2 with beta rays being blocked, and is condensed by the condenser 3, and the optical path is changed by the optical path changer 4, and subsequently the light is detected by the first optical detector 5. The first optical detector 5 outputs a signal according to the amount of detected light.

Abstract: An alpha ray observation device and an alpha ray observation method are provided that can correctly evaluate a signal derived from alpha rays. The alpha ray observation device according to an embodiment includes a device housing 10, an incident window 2, a condenser 3, an optical path changer 4, and a first optical detector 5. The device housing 10 is provided with an opening. The incident window 2 is provided at the opening, and can block beta rays. Emitted light originated by alpha rays caused from the measurement object set outside of the device housing 10 enters the inside of the device housing 10 through the incident window 2 with beta rays being blocked, and is condensed by the condenser 3, and the optical path is changed by the optical path changer 4, and subsequently the light is detected by the first optical detector 5. The first optical detector 5 outputs a signal according to the amount of detected light.

Abstract: Disclosed is a digital communication system for mobile communication, which has: a transmitter for mixing and outputting outputs from two independent and equivalently synchronized transmitting circuits in a &pgr;/4 shift QPSK modulation system; and a receiver for receiving a mixed wave transmitted from the transmitting circuits and demodulating the received signal by using information as to its phase and amplitude.

Abstract: A novel thermosetting compound which is speedily curable, generates no by-products during curing and gives cured products having excellent heat resistance and inflammability.A thermosetting compound characterized in containing, per molecule, at least one structural unit represented by the formula (A) and at least one structural unit represented by the formula (B) in a (A)/(B) molar ratio of 1/0.25 to 1/9, said structural units being bonded directly or via at least one organic group with one another; ##STR1## wherein R.sup.1 is a methyl group, a cyclohexyl group, a nonsubstituted phenyl group or a phenyl group substituted with at least one substituent, and each hydrogen atom on the aromatic rings of (A) and (B), except for one of hydrogen atoms on ortho-positions of the hydroxy group in the aromatic ring of (A), may optionally be replaced with a substituent.

Abstract: A method of signal transmission between radio base stations (BSs) in a mobile communication system by using only one transmission system commonly used for both of communication with the exchange and communication with mobile stations (MSs) is realized. Each BS has at least one each of receiver and transmitter operable in the same frequency used in an adjacent BS, a call signal to be transferred is assigned in a channel slot of same radio signal as used for communication with MSs in own radio zone, the call signal contains destination indicator indicating an identification number of the BS to which the call signal is to be transferred, and each BS compares the indicator with own identification number, and if they coincide with each other, the call signal is extracted and used in the BS, but if they do not coincide with each other, the call signal is relayed to the next BS by transmitting radio signal containing the call signal in the same channel slot as received.

Abstract: A blank-figure constructing method for sheet metal work, wherein a cutting passage planned to sequentially cut a plurality of desired blanks from a sheet material is determined, utilizing a multiple figure composed of the figures of the plurality of blanks to be obtained, in the multiple figure of which the adjacent line segments of the single blank figures are combined. This method is that if the multiple figure has an even number of, four or more odd vertices at each of which an odd number of internal and external line segments of the multiple figure meet, an auxiliary line is drawn outside the multiple figure, connecting any two of the odd vertices on the outline of the multiple figure to make the total number of odd vertices be two or zero so that the cutting passage, which passes through all the internal, external line segments and auxiliary line of the multiple figure, can be determined.

Abstract: A method of taking up the ribbon, which flies from a quickly cooling roll, directly on a drum. There are connected in the recited order a guide tube fixed in the vicinity of the roll and in a tangential direction, a movable suction tube, a flexible hose and suction means. The drum is given a self-adhesive layer on its outer circumference and is movably disposed in the vicinity of the connection between the guide tube and the suction tube. While the suction tube is communicating with the guide tube, the ribbon is caused to pass through the guide tube, the suction tube and the hose. The suction tube is moved apart from the guide tube to expose the ribbon to the outside. The drum rotated in the same direction as that of the roll is moved to come into contact with the exposed ribbon. The suction tube is then moved so that the exposed ribbon passing to the suction tube may be wound on the drum.

Abstract: This invention relates to a method of drilling apertures for branch lines (A) blocked by renovation lining of a main pipeline (B) which comprises setting a water plug (1) in the opening of each branch line (A) prior to lining, said water plug (1) carrying a position marker (14) comprising an antenna coil and a resonator adapted to be excited by a driving signal and, after stoppage of the driving signal, release a resonance signal remaining in the resonator from the antenna coil and said position marker being situated in a position which, upon setting of the water plug (1) in position, is substantially concentric with the axis of the branch line (A), causing an antenna assembly for detecting the resonance signal to travel within the main pipeline (B) to detect the position of the marker (14) and driving a drilling means (24) using the thus-detected marker position as a target from within the main pipeline.

Abstract: A leader angle control device comprises two inclinometers for measuring inclination of a leader in two directions, an arithmetic unit for calculating the length of two backstays which support the leader based on the detected inclination of the leader and a control unit for controlling backstay cylinder driving oil.In one embodiment of the leader angle control device, the leader angle is controlled manually to a certain extent before automatic control takes place, whereby the acceleration applied to the leader at the time of shift to automatic control is kept small and then gradually increases, thus enabling smooth control of the inclination of the leader.

Abstract: Internally plasticized phenolic resins suitable for use in preparing laminates and the like excellent in electrical properties, heat resistance, solvent resistance as well as punchability are produced by reacting a compound of the formula: ##STR1## wherein R.sub.1 is an alkylene residue having 1 to 3 carbon atoms; and R.sub.2 and R.sub.3 are independently hydrogen or a saturated or unsaturated hydrocarbon group having 1 to 3 carbon atoms, with an epoxidized vegetable oil with heating in the presence of one or more secondary and/or tertiary amines, and adding formaldehyde or one or more phenols and formaldehyde to the reaction system to further proceed the reaction.

Abstract: A steel or concrete liquid tank body 1 has an adhesively secured internal cushioning layer of rubber sheets 2 underlying an adhesively secured lining of corrosion resistant synthetic resin sheets 4. The angular tank body corners are provided with triangular rubber strips 3 to contour the lining sheets and avoid stress concentrations. The overlapping glued and welded joints a between adjacent resin sheets 4 are staggered or offset with respect to the mitered joints b between adjacent rubber sheets, and the corners of the interior of the joints a are spaced from the tank.

Abstract: Internally plasticized phenolic resins suitable for use in preparing laminates and the like excellent in electrical properties, heat resistance, solvent resistance as well as punchability are produced by reacting a phenol-formaldehyde resin containing less than 4% by weight of unreacted free monohydric phenol or phenols with an epoxidized vegetable oil, and if required with formaldehyde, with heating preferably in the presence of one or more secondary and/or tertiary amines.

Abstract: Resol type phenol resins containing scarcely or no phenol mononucleus compounds (monomers) and phenol dinuclei compounds (dimers) and their methylolated derivatives and scarcely containing molecules having an apparent molecular weight of more than 2500 are produced by reacting phenol with formaldehyde in the presence of an alkaline catalyst in a molar ratio of 3.0 to 6.0 moles of formaldehyde and 0.05 to 2.0 moles of the alkaline catalyst per mole of phenol, neutralizing the reaction solution with an acid to pH 4.5 to 6.5 and precipitating the resulting product for separation.