Abstract: A groove configuration, formed on an inside wall of a heat exchanger tube, has a cross-sectional area varying in the longitudinal direction of the heat exchanger tube. An increased rate of the cross-sectional area is differentiated from a decreased rate of the cross-sectional area by changing the height or top width of a protruding portion, or the depth or bottom width of a recessed portion.

Abstract: An extruder for paste-like food substances including a barrel provided at one end with an outlet from which the paste-like food substance can be extruded in either measured amounts or in a steady flow, a rotatable screw is located within the barrel and is capable of being rotated and moved vertically within the barrel, a clutch located within a housing is capable of engaging the screw to ensure measured amounts of paste-like food are extruded or capable of being disengaged from the screw to permit the screw to be freely rotated and moved vertically within the barrel to permit the paste-like food substance to be extruded from the outlet in a steady flow.

Abstract: A first MOS transistor of a specific conductive type and a second MOS transistor of the specific conductive type are combined in an electrostatic circuit protection. In the first MOS transistor, a drain thereof is connected to an output terminal or an input terminal and a source thereof is connected to a first power terminal. The first MOS transistor is turned on/off by a signal received by a gate or ordinarily turned off by holding the gate at a specific potential. In the second MOS transistor of the specific conductive type, a drain thereof is connected to the output terminal or the input terminal and a source thereof is connected to a gate of the first MOS transistor. The second MOS transistor is ordinarily turned off by connecting a gate thereof to the first power terminal.

Abstract: A lead frame includes a base, a substantially rectangular device hole formed in the base, an island formed in the device hole and offset a predetermined distance from the base, a plurality of inner leads arranged at predetermined intervals to extend toward a pair of opposing edges of the island, and suspension pins formed to extend toward a pair of edges of the island not opposing the end portions of the inner leads. The island is used to mount a semiconductor chip, and the suspension pins connect the island and the base. A pair of dummy leads extended from the base toward the island is formed on the both sides of at least one suspension pin. The distance from the side edge of the suspension pin to the side edge of the dummy lead is equal to or smaller than the distance from the end portions of the inner leads to the side edge of the island.

Abstract: Human myeloperoxidase produced by culturing prokaryotic or eukaryotic cells transformed by a vector for the expression of human myeloperoxidase in said cells.

Abstract: A tracheostomy tube assembly comprises an outer tracheostomy tube and an inner cannula of a flexible material preformed to the shape of the outer tube and smooth on its inside and outside. The outer tube is straight at its patient end and has a short straight machine end with a coupling. The patient and machine ends are separated by a curved intermediate region divided along its length into two sub-regions. The first sub-region closer the machine end has a small radius of curvature; the other sub-region closer to the patient end has a radius of curvature at least three times that of the first sub-region. This shape enables the patient end of the assembly to be aligned with the patient's trachea.

Abstract: A semiconductor component comprises a pn junction in which both the p-conducting and the n-conducting layers of the pn junction are doped silicon carbide layers and the edge of at least one of the conducting layers of the pn junction exhibits a stepwise or uniformly decreasing total charge or effective surface charge density from the initial value at the defined working junction to a zero or almost zero total charge at the outermost edge of the junction following a radial direction from the central part of the junction towards its outermost edge.

Abstract: Positive lithographic patterns are produced by imagewise exposing to actinic light, x-ray or e-beam a polymer having pendant recurring groups selected from the group consisting of--COO--CH.sub.2 --CH(OH)--(CH.sub.2).sub.x --H wherein x is 0-20;--COO--CH.sub.2 --CH(OH)--(CH.sub.2).sub.y --HE--(CH.sub.2).sub.Z --H; and mixturesthereof; wherein HE is O or S; and each y and z individually is 1-18; and mixtures thereof; and then developing the polymer in an aqueous base developer. The developer can be any of the conventional or commonly used ones as well as the special developers discussed below.Positive lithographic patterns are also produced by imagewise exposing to actinic light, x-ray or e-beam a photosensitive polymeric material to provide free carboxylic acid groups; and then developing by contacting with an aqueous developer solution of about 0.

Abstract: A digitizing CCD array system calibrates the CCD array precisely, masks a data medium automatically, and recovers data from the data medium accurately. The system uses a substantially opaque film mask to eliminate the effects of diffused light and flare during a digitization process when the data medium is smaller than an illumination source. A multiple optical density filters are used in calibrating the CCD array to provide a precise optical density reference for digitization of the data medium. In addition, the invention increases contrast sensitivity in data recovery by selectively switching the CCD array on and off to control the duration of multiple exposure times, i.e., integration periods, during a single line scan.

Abstract: A semi-continuous process for high-pressure sterilization of a liquid or solid product, in which the sterilization of successive volumes of the product is performed by compressing the product at high pressure in a variable treatment chamber of generally tubular shape and of circular cross-section.

Abstract: A semiconductor assembly with overvoltage protection is provided. The semiconductor assembly comprises at least two series connected power semiconductors, each of which is protected by at least one overvoltage protection device. The overvoltage protection device is activated at a predetermined voltage. The overvoltage protection device may be coupled in parallel across the emitter and collector of the power semiconductor or between the collector and gate of the power semiconductor. The overvoltage protection device includes a capacitor and a rectifier connected in series with the capacitor. The rectifier prevents the capacitor from discharging when the power semiconductor is in a conducting state. A voltage controller is connected to the capacitor and determines the voltage level to which the capacitor is discharged after an activation of the overvoltage protection device.

Abstract: Processes for efficiently producing .alpha.-halo ketones, .alpha.-halohydrins and epoxides on an industrial scale. The prosesses include one for producing an .alpha.-halo ketone of general formula (3) by decarboxylating a product of reaction between a carboxilic acid derivative of general formula (1) and a metal enolate prepared from an .alpha.-haloacetic acid of general formula (2) or an acceptable salt thereof, one for producing an by reducing the .alpha.-halo ketone (3), and one for producing an epoxide (13) by treating the .alpha.-halohydrin (11) with a base to effect ring closure. The above prosesses are particularly suitable for producing optically active .alpha.-halo ketones, .alpha.-halohydrins and epoxides from the corresponding .alpha.-amino acid derivatives.

Abstract: A semiconductor diode structure with a Schottky junction, wherein a metal contact and a silicon carbide semiconductor layer of a first conducting type form the junction and wherein the edge of the junction exhibits a junction termination divided into a transition belt (TB) having gradually increasing total charge or effective sheet charge density closest to the metal contact and a Junction Termination Extension (JTE) outside the transition belt, the JTE having a charge profile with a stepwise or uniformly deceasing total charge or effective sheet charge density from an initial value to a zero or almost zero total charge at the outermost edge of the termination following a radial direction from the center part of the JTE towards the outermost edge of the termination.

Abstract: A control device for computers or industrial processes is provided. The device comprises one or more transducers arranged in a chair for sensing movements of the chair. A first transducer is arranged to sense turning movements of the chair and emit signals corresponding to movements in a horizontal direction. A second transducer is provided for sensing tilting movements of the chair and is arranged to emit signals corresponding to movements in a vertical direction. The output signals of the first and second transducers are supplied to an interface. The interface outputs signals to a transmitter which controls the computer or process, for example, a cursor on a display device.

Abstract: Topical composition for transdermal delivery of morphine. The composition contains certain morphine esters in association with a carrier. The compositions relieved pain or tranquilize a mammal when delivered transdermally.

Abstract: A control channel is searched for call waiting in a mobile station where the power supply for a receiving circuit is turned off during a break time of receiving level measurements, wherein in a first control channel selection mode, all the control channels are divided into a plurality of groups, the receiving levels of the control channels are measured group by group intermittently and sequentially. The intermittent measurement of these groups are repeated until a control channel having a receiving level equal to or greater than a first predetermined value is detected. When a receiving level equal to or greater than the first predetermined value is detected, the receiving levels of all the control channels are measured in a second control channel selection mode.

Abstract: An ultrasonic fuel-gauging system has a tank with several ultrasonic probes having reflectors spaced along their length. A vibrating cylinder densitometer is located at the bottom of the tank and provides an output to a control unit representative of fuel density at that location. The control unit calculates the speed of sound reflected from the reflector closest to the densitometer and uses this and the density measurement to calculate a fuel constant. The control unit calculates the density of fuel at different heights from the fuel constant and speed of sound measurements from other reflectors. From these density measurements the control unit calculates mean density and fuel mass.

Abstract: In an electronic cash implementing method using a trustee, a user registers his identification information ID.sub.U and anonymous public key N with the trustee and receives a license (B,I). The user processes the license (B,I) by a public key corresponding to the amount to be issued and sends the processed information to a bank to have it attach a blind signature to the information so that the user obtain electronic cash C from the blind signature. The user transmits to a shop the information B,I,C,N and a digital signature that assures the divisional use of the electronic cash. The shop verifies the validity of the information B and C and accepts it as cash and sends a history H of communication with the user to the bank and receives a payment therefrom.

Abstract: A gate structure in a CMOS is fabricated wherein the encapsulation material is self-aligned with the gate conductor and the gate channel. The gate conductor is formed subsequent to the device doping and heat cycles for formulation of the source and drain junction, and is preferably of greater width than the gate.