Abstract:
A member of the present invention is provided with: a base material 12 having a low thermal conductivity; a heating element 13 that is routed to a surface of the base material 12; and a covering material 11 having a high thermal conductivity, and covering the heating element 13 and the base material 12, in which the base material 12 includes a positioning portion 21 adapted to position the heating element 13, and the covering material 11 is formed so as to compensate each other in cooperation with the heating element 13, and closes at least a partial range in a region between an exterior face and the surface of the base material 12.
Abstract:
In order to prevent static electricity impairment of an electronic component, a layer at the surface of a container to be in contact with an electronic component is one having a relatively high surface resistivity, a layer having a higher electrical conductivity than that is laminated below it, and the surface resistivity of the layer at the surface is higher than that of the layer below it. It is considered that in an electronic component packaging container having such a constitution, static electricity electrified on an electronic component is gradually discharged from the electronic component to the surface of the electronic component packaging container without sudden discharge, thus preventing the static electricity impairment. The surface layer preferably comprises a material close to the electronic component in the series of frictional electrification.
Abstract:
A computerized tomography system comprising a means for data rearrangement for converting fan-beam projection data into parallel beam projection data speedily andd easily without complicated calculations, said fan-beam projection data obtained at the detecting position corresponding to each defined pitch of rotary angle by which a detector unit comprising a number of radiation detectors arranged in a fan form against the radiation source is rotated.
Abstract:
A detecting instrument for detecting time difference between input times of two signals through the use of correlation function is disclosed. The instrument includes a digital circuit for repetitive computing of the correlation function between the two input signals and an analog circuit for detecting the phase of the fundamental frequency component of the repeated correlation function provided by the digital circuit.
Abstract:
A signal detection apparatus wherein pulses of the reverse polarity to that of the signal pulse to be detected are detected from an input pulse signal, and thereafter the signal outputting path is cut off for a fixed period, so that noise pulses which have oscillating waveforms in both positive and negative polarites are segregated from the signal pulses which can be provided with a unipolarity, by making use of the difference in polarity, and thereby, the noise pulses are eliminated regardless of their pulse heights. Further, the signal input to the cut-off circuit is delayed for a fixed period of time so that the first peak of the noise pulses may be eliminated even if it is of the same polarity as that of the signal pulse.
Abstract:
A phase shifter according to this invention comprises circuit groups on a phase advance side and on a phase retardation side in each of which N phase shifting circuits of constant amplitude are connected in cascade, and in which the time constants of the successive phase shifting circuits are set at a geometrical progression of a fixed ratio .alpha., while the time constants of the phase shifting circuits on the phase retardation side are made .beta. times greater than those of the corresponding phase shifting circuits on the phase advance side. Thus, any desired phase difference can be attained according to the value .alpha., while a desired phase difference can be attained according to the value .beta., and the limits of a frequency band width are eliminated by increasing the number of stages N of the cascade connection of each circuit group.
Abstract:
An electronic component packaging container which comprises a multilayer polyester sheet having a base layer comprising a polyethylene terephthalate type resin and a polycarbonate type resin and a surface layer comprising a polycarbonate type resin, formed on at least one side of the base layer, wherein the base layer contains from 70 to 97 wt % of the polyethylene terephthalate type resin and from 3 to 30 wt % of the polycarbonate type resin based on the total amount of the polyethylene terephthalate type resin and the polycarbonate type resin, and the thickness of the surface layer is from 10 to 30% of the total thickness.
Abstract:
An electroconductive resin composition useful for packaging an electronic device, is provided, whereby a drawback that carbon black is likely to fall off from the surface of a molded product by abrasion, has been overcome. It is an electroconductive resin composition which comprises at least one thermoplastic resin selected from the group consisting of a polyphenylene ether resin, a polystyrenic resin and an ABS resin, and carbon black and which contains a styrene/butadiene/butylene/styrene block copolymer or a mixture of such a copolymer with an olefinic resin, and has a surface resistivity of from 102 to 1010 Ω. Contamination of IC, etc., to be caused by falling off of carbon black, etc. by abrasion when contacted with IC, etc., can be substantially reduced.
Abstract:
A gamma-ray compensated ionization chamber wherein the state of compensating a gamma-ray is controlled by utilizing the effect that a change in the applied voltage ratio of a high-voltage electrode to a compensating electrode changes the form of an electric field around the holes in a signal electrode.
Abstract:
Described is herein a radiation measuring apparatus in which a detected pulse signal having a wave height value proportional to energy of radiation is transmitted through an optical fiber and a detected pulse signal received from the optical fiber is supplied to an external apparatus. Even if the transmission loss of the optical fiber is subjected to change with passage of time, a monitor pulse signal having a polarity reverse to that of a detected pulse signal is overlapped on the detected pulse signal lest the wave height of the detected pulse signal be not varied on the transmitting side, and a wave height value of a monitor pulse signal passed through the optical fiber is detected to compensate the wave height of the received detected pulse signal using the detected value.