Abstract: An information processing apparatus has an instruction execution unit (IEU), a counter, first and second FIFO buffers, and a selector. The IEU executes instructions. The counter traces an order of execution of the instructions executed by the IEU and stores the order of execution as an order data. The first FIFO buffer stores a branch source address data obtained by a branch instruction together with the order data. The second FIFO buffer stores a content of a memory obtained by a memory access instruction or push data obtained by a stack push instruction together with the order data. The selector selects one of the data stored in the first and second FIFO buffers and provides it to an external device. The selector selects the first FIFO buffer prior to the second FIFO buffer as long as the first FIFO buffer has the branch source address data stored therein.

Abstract: A process for preferentially producing a 4-(1-carboxyalkyl) azetidin-2-one derivative represented by formula (II.beta.): ##STR1## wherein R.sup.3 represents a lower alkyl group and R.sup.4 represents a hydrogen atom or a hydroxy-protective group, which involves deesterifying and decarboxylating a 4-(1,1-dialkoxycarbonylalkyl) azetidin-2-one derivative represented by formula (I): ##STR2## wherein R.sup.1 and R.sup.2 are identical or different and each represents an alkyl group, an alkenyl group, or an aralkyl group, R.sup.3 and R.sup.4 each has the meaning as defined above, and R.sup.5 represents an amino-protective group, and after that, eliminating the amino-protective group from the derivative, where the 4-(1-carboxyalkyl)azetidin-2-one derivative of formula (II.beta.) is present in an amount of at least 61% by mol of all 4-(1-carboxyalkyl)azetidin-2-one derivatives produced.

Abstract: An electronic file system includes a recording-medium drive for driving one of a first recording medium and a second recording medium, a terminal device outputting access requirements, and a carrier mechanism for setting one of the first recording medium and the second recording medium into the recording-medium drive in response to an access requirement outputted from the terminal device. The electronic file system also includes a controller connected between the terminal device and the carrier mechanism for processing access requirements outputted from the terminal device to reduce a number of times of setting operation of the carrier mechanism. The controller is arranged so that while a first page of read-out data is being indicated by the terminal devices subsequent pages are pre-read and stored in a short term, fast memory designated for this purpose.

Abstract: In an intermittent heating apparatus for plasticized fluids in injection or similar moldings, heating medium passages are located outside the electric resistance heating tubes for a liquid or gas to pass therethrough while being in contact with the outer surfaces thereof, also provided is a heating/cooling device having both a high temperature heating medium heated to a high temperature close to the temperature at which said reaction of the raw material is rapidly promoted and a low temperature heating medium of a temperature range where the promotion of said reaction of the raw material can be neglected.

Abstract: A 4-(1,1-dialkoxycarbonylalkyl )azetidin-2-one derivative represented by formula (I): ##STR1## wherein R.sup.1 and R.sup.2 are identical or different and each represents an alkyl group, an alkenyl group, or an aralkyl group, R.sup.3 represents a lower alkyl group, R.sup.4 represents a hydrogen atom or a hydroxyl-protective group, and R.sup.5 represents a hydrogen atom or an amino-protective group, and a process for producing a 4-(1-carboxyalkyl)azetidin-2-one derivative represented by formula (II) useful as an intermediate for 1.beta.-alkylcarbapenem-type antibacterials: ##STR2## wherein R.sup.3 represents a lower alkyl group and R.sup.4 represents a hydrogen atom or a hydroxyl-protective group, which comprises de-esterifying and decarboxylating the derivative represented by formula (I), and in the case where an amino-protective group is present in the derivative of formula (I), eliminating the protective group from the derivative, are disclosed.

Abstract: In a seesaw balance type microminiature electoromagnetic relay including an armature unit composed of two movable contact springs having a pivot arm formed at the center thereof and contacts formed at every end thereof, an armature having a protrusion on the back side for a pivotal movement, and an insert-molded insulator, a substrate unit composed of a common terminal for mounting the pivot arm electrically connected to a common terminal pin, a pair of switching terminals having fixed contacts for connecting the contacts of the springs electrically connected to terminal pins, and an electromagnet unit composed of a yoke, an exciter coil wound thereon, a flat shape permanent magnet provided between both ends of the yoke and two terminal pins electrically connected to the start and the end of the exciter coil, respectively; a hoop member is formed in an integrated configuration of a plurality of groups by a press blanking procedure, each group including a pair of movable contact springs, two non-magnetizing pl

Abstract: In a seesaw balance type microminiature electoromagnetic relay including an armature unit composed of two movable contact springs having a pivot arm formed at the center thereof and contacts formed at every end thereof, an armature having a protrusion on the back side for a pivotal movement, and an insert-molded insulator, a substrate unit composed of a common terminal for mounting the pivot arm electrically connected to a common terminal pin, a pair of switching terminals having fixed contacts for connecting the contacts of the springs electrically connected to terminal pins, and an electromagnet unit composed of a yoke, an exciter coil wound thereon, a flat shape permanent magnet provided between both ends of the yoke, and two terminal pins electrically connected to the start and the end of the exciter coil, respectively; a hoop member is formed in an integrated configuration of a plurality of groups by a press blanking procedure, each group including a pair of movable contact springs, two non-magnetizing p

Abstract: A compression ring for an internal-combustion engine includes an outer circumferential surface and a lower circumferential surface which define a lower outer circumferential corner, a radially extending first butt end face having a circumferentially projecting rib, and a radially extending second butt end face opposing the first butt end face and having a circumferentially extending notch for receiving the rib. The lower outer circumferential corner portion has a cut-away portion extending along the entire circumference thereof except at portions contiguous to the first and second butt end faces.

Abstract: A process for preparing (1'R,3S)-3-(1'-hydroxyethyl)-azetidin-2-one or a derivative thereof represented by formula (I): ##STR1## wherein R.sup.1 represents a hydrogen atom or a hydroxyl-protective group, is disclosed, comprising reacting (2S,3R)-2-aminomethyl-3-hydroxybutyric acid or a derivative thereof represented by formula (II): ##STR2## wherein R.sup.1 is as defined above, with a sulfenamide represented by formula (III): ##STR3## wherein R.sup.2 represents ##STR4## and R.sup.3 and R.sup.4 each represent a hydrogen atom or a cyclic or acyclic hydrocarbon group, provided that they do not simultaneously represent a hydrogen atom, or R.sup.3 and R.sup.4 are taken together with the adjacent nitrogen atom to form a heterocyclic group, and triphenylphosphine. The reaction yield is high, and the sulfenamide (III) used as a lactamization reagent is cheap and can be recovered after the reaction.

Abstract: An electromagnetic polar relay comprising a first yoke having a main portion and first and second ends positioned at respective angles to the main portion; a second yoke, positioned to face the first yoke, having a lower end positioned to face the main portion so that magnetic reluctance between the second yoke and the main portion is larger than a magnetic reluctance between the first end of the first yoke and the main portion; an armature having a first portion movably connected to the second end of the first yoke and having a second portion movable between the first yoke and the second yoke; a coil positioned about the armature; and a permanent magnet, positioned over the main portion, having a first pole magnetically connected to the first end of the first yoke and a second pole magnetically connected to the second yoke. The higher reluctance is due to, for example, an air gap provided by a tapered edge of the second yoke.

Abstract: Disclosed is a backpack type operating unit, which includes a backpack frame having a front portion and a left lateral side portion, an operating device and a motive power source for driving the operating device. The motive power source and the operating device is mounted on the backpack frame, and the front portion of the backpack frame faces toward a forward direction and the left lateral side portion facing toward a leftward direction, in which the forward direction and the leftward direction are perpendicular to each other and lying in a common horizontal plane.

Abstract: A laser disk cassette selecting system comprising a cassette case having a plurality of housing cavities in a multi-layered or sequential form for housing laser disks or cassettes, a cassette or disk case holding member for detachably mounting the case, a driving motor for moving the case holding member up or down, a forwarding device which forwards a selected laser disk or cassette in the case into a disk or cassette player, whereby the laser disk or cassette is selectively forwarded into the disk or cassette player after a certain positioning operation occurs to orient the selected disk or cassette with the player.

Abstract: There is provided a piggyback type blower unit. The blower unit comprises a piggyback frame, a fan case incorporating a fan, a powder tank arranged on top of the fan case, a fuel tank arranged behind said fan case, and an engine fixed behind the fan case and on top of the fuel tank. The piggyback frame comprises hollow frame members and is connected to the suction side of the engine to form a suction path for sucking and supplying air for the engine through the suction path, or connected to the suction side of the fan to form a suction path for sucking and supplying air for the fan through the suction path. An air cleaner is inserted within the hollow piggyback frame on the suction path communicating with the suction side of the engine.

Abstract: A process of extrusion molding plasticized vulcanizable or cross-linkable rubber or synthetic resin materials, comprising the steps of heating said materials to an elevated temperature in a short time immediately before a molding die and vulcanizing or cross-linking the materials in the manner of maintaining said elevated temperature substantially while the materials are passing through the die or for a while after they have passed through the die, thereby obtaining mold goods.

Abstract: Raw material of less than 10% of the one injection amount is heated at a time to a high temperature just before injected into the mold cavity by an intermittent heater and is injected continuously into the cavity keeping that temperature. Heat capacity of the heater is small to obtain quick response and to give no heat effect to the raw material to be injected for the next product. The device of this invention comprises a device to inject a predetermined amount of raw material for one injection intermittently, a flow path for the raw material which connects said device and the mold, and electric resistant heater in the flow path to generate Joule heat and to transfer the generated heat to the raw material flowing through said flow path.

Abstract: A method of and device for forming vacuum sealed molds, in which suction is applied to a charging material charged into a flask to remove the charging material adjacent the top of a sprue or a communicating passage thereby forming a cup-shaped pouring basin for the sprue or a funnel-shaped concave for the passage in a mold, thereafter a shielding film is applied over the upper surface of the flask, and a suction is applied to the charging material within the flask.