Abstract:
A method for fabrication of a lateral transistor is disclosed, which comprises the step of diffusing base impurity by means of the RED method from the same masking hole determining an emitter region on a substrate which includes the emitter region and a collector region on the crystalline main plane thereof.
Abstract:
In a fluidizing device adapted to effect chemical reaction, heat transfer, material transfer, etc. and provided with a cyclone unit, a plurality of internal members made of bars or tubes are disposed at fixed intervals within a free board section formed above the fluidized bed. When the fluidizing device has the internal members disposed as described within the free board section, agglomerates of constituent particles of the fluidized bed which fly out of the fluidized bed come into contact with the said internal members, with the result that the kinetic energy possessed by each agglomerate of particles is gradually consumed in the course of several contacts and the vertical component of the speed vector of the agglomerate of particles flying toward the cyclone unit is proportionally decreased. Consequently, the amount of fine particles produced due to collision into the inner wall surface of the column is markedly decreased and at the same time the absolute amount of particles flying into the cyclone unit is decreased to a great extent.
Abstract:
Briquets are manufactured by kneading in a hot blow atmosphere coal dust blended with asphalt containing 55-65 percent n-hexane soluble matter as the binder in a particular ratio and molding the kneaded blend under heat-compression. These briquets are further heat-cured in an oxidizing atmosphere and then calcined in an inert gas, to produce coke in the molded form. The resulting products have all the properties required for use in blast furnaces.
Abstract:
Disclosed is a semiconductor device comprising at least two semiconductor elements integrally connected by an insulator, each semiconductor showing negative differential conductivity under the influence of a high electric field. A high electric field domain or space charges which are generated in one of the semiconductor elements can be transferred to the other element by directly affecting the other element via an insulator.
Abstract:
MYCELIA HAVING STRONG A-GALACTOSIDASE ACTIVITY AND VERY WEAK INVERTASE ACTIVITY ARE OBTAINED BY CULTURING A MOLD BELONGING TO THE GENUS ABSIDIA IN A CULTURE MEDIUM INCORPORATING THEREIN AT LEAST ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF LACTOSE, MELIBIOSE, RAFFINOSE AND GALACTOSE. WHEN BEET MOLASSES IS TREATED WITH THE SAID MYCELIA, RAFFINOSE CONTAINED IN THE MOLASSES IS DECOMPOSED INTO SUCROSE AND GALACTOSE. THUS, THE YIELD OF SUCROSE CAN BE INCREASED.
Abstract:
A process for measuring particle size and concentration of a slurry according to on-stream analysis is provided wherein a slurry to be measured is impacted at a given velocity against a plate to measure impact energy thereof, simultaneously with light transmission of the slurry being measured, the results of the individual measurements are supplied as information to a data memory collation device to check the information with data previously stocked in the device, thereby converting the information into the corresponding slurry concentration and average particle size.
Abstract:
AN ESTER OF 3-PENTENOIC ACID IS PRODUCED BY ALLOWING BUTADIENE, CARBON MONOXIDE AND AN ALCOHOL TO REACT ING ISOQUINOLINE AS THE SOLVENT IN THE PRESENCE OF COBALT CARBONYL AS THE CATALYST. ISOQUINOLINE HAS LOW TOXICITY, A HIGH BOILING POINT AND A LOW SOLUBILITY WITH RESPECT TO PARAFFINS. THUS, IT PROVES TO BE A CONVENIENT SOLVENT IN THE DISTILLATION AND EXTRACTION TREATMENTS NEEDED FOR THE ISOLATION OF THE 3-PENTENOIC ACID ESTER FROM THE REACTION MIXTURE. THE CATALYST AND THE SOLVENT BOTH CAN BE USED CYCLICALLY IN THE PRESENT OPERATION.
Abstract:
IN A METHOD FOR CATALYTIC HYDRODESULFURIZATION OF A HEAVY PETROLEUM HYDROCARBON OIL IN A REACTOR COMPOSED OF A CYLINDRICAL PRESSURE VESSEL AND A CYLINDRICAL INNER PIPE, IN WHICH HYDROGEN GAS, OIL LIQUID AND SOLID CATALYST PARTICLES ARE CONCURRENTLY PRESENT AND THE CATALYST PARTICLES ARE FLUIDIZED AND RECYCLED IN THE REACTOR WITHOUT FLOWING OUT OF THE REACTOR, AN IMPROVEMENT FOR THE PREVENTION OF THE CATALYST''S EFFLUX IS ACHIEVED BY THE PROVI-
SION OF A BUBBLE-COLLECTING PLATE AND A CATALYST PARTICLESCATCHING PLATE ABOVE THE INNER PIPE IN THE REACTOR.
Abstract:
WHEN FINELY DIVIDED SHIRASU (PUMICE EJECTED FROM VOLCANOES AND THE SECONDARY DEPOSIT OF SUCH PUMICE) IS ROASTED AT A TEMPERATURE IN THE RANGE OF FROM ABOUT 800* C., TO ABOUT 1200*C., THE VITREOUS PARTICLES CONTAINED IN SAID SHIRASU FOAM AND CONSEQUENTLY PRODUCE LIGHT-WEIGHT HOLLOW GLASS MICRO-SPHERES. THE HOLLOW GLASS MICROSPHERES SO PRODUCED ARE SUPERIOR TO CONVENTIONAL GLASS MICRO-SPHERES ESPECIALLY IN THEIR RESISTANCE TO HEAT AND CAN THEREFORE BE COMBINED WITH METAL, CARBON, AS WELL AS WITH CEMENT AND OTHER MATERIALS TO PRODUCE NOVEL LIGHTWEIGHT COMPOSITES.
Abstract:
AN ALUMINUM CLAD MULTIPLEX SUPERCONDUCTOR COMPRISES AN ALUMINUM ALLOY CLADDING AND A MULTIPLEX SUPERCONDUCTOR INSERTED INTO THE CLADDING AND IS CONSTRUCTED WITH A PLURALITY OF UNIT SUPERCONDUCTORS TWISTED OR BRAIDED WITH EACH OTHER, EACH OF WHICH UNIT SUPERCONDUCTORS IS CONSTRUCTED WITH A STRAND OF A PLURALITY OF SUPERCONDUCTIVE WIRES, AN INTERMEDIATE ALUNMINUM LAYER AND A RELATIVELY HARD ALUNINUM ALLOY LAYER SURROUNDING THE INTERMEDIATE LAYER. THE INTERMEDIATE ALUMINUM LAYER SERVES TO PREVENT THE FLOWING PHENONMENON DURING THE WIREDRAWING OF THE UNIT SUPERCONDUCTOR.