Abstract: A column base structure having connected a pair of column-base metal fittings to the lower part of a column consisting of a pair of main column members disposed at predetermined intervals and connecting members disposed in such a manner as to integrally connect the main column members; the column base metal fittings being fixedly fitted to a concrete foundation via anchor bolts and nuts; characterized in that a horizontal member having a predetermined cross-sectional area is integrally and fixedly fitted between the main column members in the vicinity of the column base metal fitting.

Abstract: A method of forming a passivation film for protection of circuits and/or curcuit elements on semiconductor chips, IC chips, LSI chips, VLSI chips or microcomputer, wherein the resist film used in patterning the passivation film is employed as part of the passivation film after being subjected to post-baking, and the upper layer of the passivation film is made of a material selected from the group consisting of a light-sensitive polyimide, silicon resin, epoxy resin and silicon ladder polymer.

Abstract: A semiconductor device includes a laser diode and a light receiving element arranged on a common surface of a substrate and a monitor laser beam from the laser diode is reflected by a reflecting plate to the light receiving element. With the arrangement of the laser diode and the light receiving element on the same surface of the substrate, die-bondings and wire-bondings for the laser diode and the light receiving element can be performed in a single step. Thermal stress due to heat generation of the laser diode is minimized by a use of a sub-mount between the laser diode and the substrate.

Abstract: A hollow fiber membrane made of a cellulose ester having a membrane thickness of not more than 75 .mu.m, and having void volume (x, % by volume) of the membrane and a rate of ultrafiltration (y, ml/m.sup.2.hr.mmHg) satisfying the following formula:55x-2500.ltoreq.y.ltoreq.48x+600wherein x.gtoreq.60,and further has a .beta.-lipoprotein sieving coefficient (sc) of not less than 0.95, and preferably having further not more than 2% of change ratio in the axial direction and in the radial direction when dipped freely in water at 121.degree. C. for 20 minutes. Said hollow fiber membrane is useful for the medical use, such as the exchange of plasma in patients, collection of plasma from healthy donors, the pre-treatment of plasma for the collection and purification of valuable materials contained in plasma.

Abstract: A method of constructing a semiconductor laser includes producing a lead frame having a central lead which is used as a die pad at its central portion and two outside leads connected to the central lead by tie bars, mounting a semiconductor laser chip and a light receiving chip on the central lead of the lead frame, connecting the semiconductor laser chip and the light receiving chip to respective outside leads with wires, sealing portions of the leads, the wires, and both chips in a transparent package, and cutting the tie bars to disconnect the outside leads from the central lead.

Abstract: A CCD register, for example a horizontal output register of a CCD imager, includes an output precharge circuit with a capacitance. The voltage across the capacitance is supplied to an output terminal of the CCD register and has first, second and third durations repeatedly. The first duration is a precharge, the second duration is a reference duration, and the third duration is a signal. An output signal processing circuit provided for the CCD register includes a clamp circuit for clamping the output signal at the output terminal of the CCD register in such a manner that the voltage of the reference duration becomes a stable clamp voltage; a clip circuit for clipping the output signal of the clamp circuit in such that the voltage of the precharge duration is clipped to a clip level; and a low-pass filter supplied with the output of the clip circuit for generating a transferred signal.

Abstract: An image signal compressor having a controller for adjusting the compression start potential in such a way as to decrease it with increasing highest peak voltage level of three chrominance signals to be compressed, in addition to three first resistors, three diodes and three second resistors. Therefore, even if one of three chrominance signals rises excessively high, it is possible to always compress the chrominance signals below a predetermined level without limitation by limiter circuits, thus preventing the chrominance signal having an excessively high peak voltage level from being regenerated in white on a cathode-ray tube. The signal compressor is applicable to a monochrome image pickup tube or solid-state image pickup elements as well as a color image pickup tube or color solid-state image pickup elements.

Abstract: A clamp circuit for a solid-state imaging device which includes a clamp circuit for clamping at a black reference voltage level a video signal at a signal level which is obtained when an optical black portion formed on the solid-state imaging device is read, a detection circuit for detecting the increase in voltage of the optical black portion, a circuit for interrupting vertical transfer clock signals of the solid-state imaging device during at least one horizontal line interval during a vertical blanking period, and a switching circuit which when the detection means detects an abnormal voltage of the optical black portion, supplies a clamp pulse which is generated with a timing associated with the interruption of the transfer clock signals instead of the clamp pulse of the optical black portion.

Abstract: A hollow fiber membrane made of a cellulose ester having a membrane thickness of not more than 75 .mu.m, and having void volume (x, % by volume) of the membrane and a rate of ultrafiltration (y, ml/m.sup.2.hr.mmHg) satisfying the following formula:55x-2500.ltoreq.y.ltoreq.48x+600wherein x.gtoreq.60,and further has a .beta.-lipoprotein sieving coefficient (sc) of not less than 0.95, and preferably having further not more than 2% of change ratio in the axial direction and in the radial direction when dipped freely in water at 121.degree. C. for 20 minutes. Said hollow fiber membrane is useful for the medical use, such as the exchange of plasma in patients, collection of plasma from healthy donor, the pre-treatment of plasma for the collection and purification of valuable materials contained in plasma.

Abstract: A solar heat collector, in which an absorber plate is located in a box member provided at one surface thereof with a transparent sheet, being of such an arrangement that the absorber plate has been subjected at the surface thereof to a selective absorption surface treatment and a transparent heat trap formed of a fluoroplastics film and having a height of about 1/2 of the interval across the transparent sheet and the absorber plate is disposed between the transparent sheet and the absorber plate in contact with the transparent sheet. With this arrangement, the heat losses caused by convection, radiation and conduction can be suppressed at the same time.

Abstract: A power control circuit for a color encoder of a video camera having a camera head portion, a signal processing circuit for generating a luminance signal and a chrominance signal, a color encoder supplied with the luminance signal and the chrominance signal and for generating a composite video signal, and an external output terminal at which the composite video signal is obtained includes a power switch for controlling the power supply to the color encoder, a comparator connected to the external output terminal and for comparing the level of a synchronizing signal at the external output terminal with a reference level and a control circuit supplied with the output of the comparator and for controlling the power switch such that the power switch is turned on when the external output terminal is terminated.

Abstract: Disclosed herein is a process for preparing with a high yield an aminoalkylsulfonic acid represented by the following general formula: ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are each a hydrogen atom, an alkyl group having 1-3 carbon atoms or a hydroxyl-containing alkyl group having 1-3 carbon atoms and n stands for an integer of 2 or 3, which process comprises reacting a sulfite with a halogenated alkylamine represented by the following general formula: ##STR2## wherein X means a chlorine, bromine or iodine atom, and R.sub.1, R.sub.2, R.sub.3 and n have the same meanings as defined above by adding the halogenated alkylamine little by little either continuously or intermittently over a certain period of time to a heated aqueous solution of the sulfite.

Abstract: A process for producing 2-mercaptoethylamine hydrohalides of the general formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are identical or different, and each represents a hydrogen atom, a lower alkyl group, a hydroxy-substituted lower alkyl group or a phenyl group, and X represents a halogen atom,which comprises reacting a 2-mercaptothiazoline of the general formula ##STR2## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are as defined above, with a 2-halogenoethylamine hydrohalide of the general formula ##STR3## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4 and X are as defined above, in the presence of water.

Abstract: The present invention provides a plastic encapsulated semiconductor device which comprises a connected metal plate having a plurality of semiconductor element holding parts which are connected in series in one direction with at least two connecting arms, said connecting arms having sectional area smaller than that of said semiconductor element holding part and being disposed inside of the side surface of said semiconductor element holding parts in the connecting direction.The invention provides a method of preparing semiconductor devices having relatively large current capacity of about 5 to 50 amperes used as diodes for automobiles and having high quality in the mass production.

Abstract: A process for preparing an organic phosphorous compound of the general formula ##STR1## wherein R.sub.A represents ##STR2## where X.sup.1 is a halogen atom, Y is --CH.sub.2 -- or --CH.sub.2 --C.sub.2 --, andR.sub.1 is H or CH.sub.3 when Y is --CH.sub.2 --CH.sub.2 --, or H, CH.sub.3 or C.sub.2 H.sub.5 when Y is --CH.sub.2 --,R.sub.B represents an alkyl group having from 1 to 4 carbon atoms or a halogenated alkyl group having from 2 to 4 carbon atoms,R.sub.C represents ##STR3## where X.sup.2 is a halogen atom, Z is --CH.sub.2 --or --CH.sub.2 --CH.sub.2 --, andR.sub.2 is H or CH.sub.3 when Z is --CH.sub.2 --CH.sub.2 --, or H, CH.sub.3 or C.sub.2 H.sub.5 when Z is --CH.sub.2 --, andR.sub.D represents an alkyl group having from 1 to 4 carbon atoms or a halogenated alkyl group having from 2 to 4 carbon atoms,the process including the steps of reacting a cyclic halogenophosphite with a cyclic phosphorous acid and acetone in a molar ratio of 1:1:1, reacting the resulting product with a molecular halogen X.sub.2.sup.