Showing papers by "Mitsubishi published in 1977"

Catheter head-type transducer

Abstract: A catheter having a transducer that comprises an organic high polymer filmlike piezoelectric element or elements. The catheter has the capacity of converting, safely and with accurate wave shapes, pressure in the living body, for example blood pressure, pressure in a thorax, or intrauterine pressure, into an electric signal. By means of this catheter, pressure in the living body can be measured.

Deformable impact absorbing device for vehicles

Abstract: An impact absorbing device comprising a hollow polyhedral body formed with a plurality of elongated cutouts in each of its side walls. These cutouts extend in parallel relation in a direction substantially orthogonal with respect to the longitudinal axis of the polyhedral body, and each cutout has one of its longer edges protruding outward and the other longer edge protruding inward. The polyhedral body is subjected to deformation or partial breakage to absorb an impact imparted to a vehicle as when the vehicle collides against another. The device may be combined with a conventional shock absorber to enhance the effect of impact absorption.

N2 -Arylsulfonyl-L-argininamides and the pharmaceutically acceptable salts thereof

Abstract: N 2 -arylsulfonyl-L-argininamides and the pharmaceutically acceptable salts thereof have been found to be effective as pharmaceutical agents for the inhibition and suppression of thrombosis in mammals.

Pallets made of synthetic resins

Abstract: A synthetic resin pallet is provided with at least one slip preventing member on the upper and or lower surfaces of the deck board. The slip preventing member is made of relatively soft and flexible material, preferably a polyolefin resin.

Process of the operation of a simulated moving bed

Abstract: A process of the operation of simulated moving bed is disclosed in which said bed is packed with a solid sorbent and provided with a plurality of pipes acting as a feed stock inlet, a desorbent inlet, a sorbed component outlet and a non-sorbed component outlet and the upstream end and the downstream end of the bed are interconnected to form a loop path, and a fluid containing the sorbed component and the non-sorbed component, and a desorbent are supplied to the bed and the sorbed component and the non-sorbed component separated are recovered. An improvement comprises the flow rate of the fluid is controlled on the basis of the concentration distribution of the sorbed and the non-sorbed components whereby the separated components are recovered in high purity and in constant composition.

Luminescent semiconductor display device including gate control electrodes

Abstract: A monolithic semiconductor luminescent display device has p + layers disposed in seven rows and five columns on one of the main faces of an n substrate to form discrete luminescent junctions between them, five anodes disposed on the p + layers one for each column and provided with light emitting windows above the junctions, and a cathode disposed on the other main face of the substrate. Seven p + control bands extend through the substrate along the rows respectively and include current passageways below the junctions. The passageways have cross sectional areas controlled with reverse voltages applied to the p + bands through the gate electrodes respectively.

Method and apparatus for forming a wound core

Abstract: A wound core is formed by forming a core element having slots for inserting a wire and teeth with equal spaces on one side of a band steel sheet; and winding the core element by engaging pins and applying local stress at the part of the slots to the opposite side to deform the core element to sequentially bend it in a multi-angle structure and to wind it helically.

Fuel combustion apparatus employing staged combustion

Abstract: A fuel combustion apparatus comprising a double concentric combustion cylinder having an outer cylinder and an inner cylinder concentric with, and shorter than, the outer one, said inner cylinder being located in the upstream portion of the space and extending axially to form an annular space between itself and the outer cylinder, a plurality of fuel injection valves installed in a circular arrangement at the head of the annular space, combustion air swirlers mounted around the fuel injection valves, one for each, with the same angle of swirl in a given direction, another combustion air swirler installed at the inner end of the inner cylinder and having an angle of swirl in the direction reverse to that of the said swirlers, and a plurality of air holes formed confinedly in the wall portion of the outer cylinder surrounding the inner end of the inner cylinder and also in the wall portion of the outer cylinder at a distance of not less than the diameter of the outer cylinder downstream from the said first air holes.

Derepression of E. coli trp operon on interfamilial transfer.

Abstract: THE P-group R factor RP4 originally isolated from Pseudomonas aeruginosa can be transferred to many Gram-negative bacteria1–3. In spite of its large molecular weight, RP4 has only one site susceptible to each of EcoRI (ref. 4), HindIII (ref. 5) and BamNI (data not shown) restriction endonucleases. We have constructed an RP4-trp plasmid consisting of RP4 DNA and the complete tryptophan operon of E. coli obtained from bacteriophage λtrpE-A60-3 in vitro6. We reported that the tryptophan synthetase activity in the strain carrying RP4-trp plasmid was repressed by exogenous tryptophan7. Manson and Yanofsky have reported that the E. coli trp operon on the colVB plasmid was similarly regulated in other enteric species8. We show here that the RP4-trip plasmid in E. coli can be transferred by conjugation to Pseudomonas aeruginosa which belongs to a different family from E. coli, converting Pseudomonas Trp− phenotype to Trp+. The levels of tryptophan-synthesising enzymes in P. aeruginosa carrying RP4-trp plasmid are much higher than those in the wild strain, and they are not controlled by the repression system in P. aeruginosa cells.

Method for producing fibrous sheet

Abstract: A fibrous sheet having a high strength and water resistance and having no resin specks on the surface can be produced by producing a sheet from a fiber slury by the known paper making process, to said fiber slurry being added a flocculate of chlorinated polymer latices which has a particle size of 100μ-500 μ and is prepared by heating said chlorinated polymer latices to a temperature of at least their minimum film-forming temperature and then adding a water soluble cationic polymer or a polyvalent metal salt with stirring Examples of said chlorinated polymer latices are anionic polyvinyl chloride latex, polyvinylidene chloride latex or the combination thereof

Process for producing polycarbonate oligomers

Abstract: A process for producing polycarbonate oligomers by the reaction of dihydroxy compounds with phosgene, which comprises contacting a mixture of a dihydroxy compound and an aqueous alkali solution with phosgene in the presence of an organic solvent in a tubular reactor to perform a first-stage reaction, introducing the first-stage reaction mixture into a tank-type reactor equipped with a stirrer and containing the aqueous alkali solution and a solution in the organic solvent of a polycarbonate oligomer formed by the reaction of the first-stage reaction product in a second stage, and performing the second-stage reaction while stirring the reaction mixture in the tank-type reactor and maintaining it at a predetermined temperature by sufficient removal of the heat of reaction.

Lateral pulling growth of crystal ribbons and apparatus therefor

Abstract: The lateral pulling growth of a thin and wide crystal ribbon is established by laterally pulling the crystal ribbon from the melt of a crystalline substance having the same crystal structure as that of the crystal ribbon with a gaseous cooling medium blown over the surfaces of the melt and the grown crystal.

Process for the production of an ion exchange membrane

Abstract: This invention relates to a process for the production of a heterogeneous ion exchange membrane having a high ion transport number in the presence of a high ion concentration, which comprises mixing a finely powdered ion exchange material with a crystalline polyolefin resin, forming the resultant mixture into a membrane-shaped article and treating the membrane-shaped article with an aqueous solution of at least one salt selected from alkali metal salts and ammonium salts, having a concentration of from 17% by weight to saturation, at a temperature of at least 80° C. for at least 10 minutes.

Bag packing apparatus

Abstract: In a bag packing apparatus, a plurality of bags are successively conveyed at a predetermined interval in the direction of the thickness of the bags, rather than in the direction of the width of the bags, by means of a pair of chain conveyors disposed along the opposite sides of the conveying path of the bags. A plurality of clamps are supported by the pair of conveyors at equal intervals and are adapted to grip the opposite ends of the mouths of the respective bags. There is provided means for moving the respective clamps back and forth at right angles to the direction of traveling of the conveyors to facilitate opening and closing of the mouths of the respective bags for packing the bags.

Process for preparing bead polymers

Abstract: Disclosed is a process for preparing a water-soluble bead polymer by dispersing drops of an aqueous solution of water-soluble vinyl monomer in a dispersing medium in the presence of a dispersion stabilizer, and polymerizing the monomer by using monomer selected from the following A and B (a) a compound of the general formula I ##STR1## wherein R 1 is hydrogen or methyl, R 2 and R 3 may be the same or different and each is linear or branched alkyl of from 1 to 4 carbon atoms, R 4 is hydrogen, linear or branched alkyl of from 1 to 8 carbon atoms, hydroxy alkyl of from 1 to 4 carbon atoms, or benzyl, Y is alkylene or hydroxyalkylene each of from 2 to 4 carbon atoms, and X - is an anion, or (B) a mixture of the compound of the formula I and a water-soluble vinyl monomer copolymerizable with the compound (I), and a cellulose ester or a cellulose ether insoluble in water but soluble in the dispersing medium is used as the dispersion stabilizer.

Lateral pulling growth of crystal ribbons

Abstract: The lateral pulling growth of a crystal ribbon is established under precise heat control by pulling laterally the crystal ribbon from the melt of a crystalline substance having the same crystal structure as that of the crystal ribbon.

Transformation of Pseudomonas aeruginosa by plasmid DNA.

Abstract: Genetic transformation of P. aeruginosa by the drug-resistance factor DNA (RP4) is reported. Transformants retain all the drug-resistance characteristics present in the parent plasmid.

Molded gypsum product and process for preparing the same

Abstract: A molded gypsum product comprises a matrix of crystalline gypsum and reinforcing fibers of glass fiber and asbestos fiber uniformly distributed in said matrix in a multi-layer structure having at least one higher density layer and at least one lower density layer which is continuously adjacent to said higher density layer and having an average apparent bulk density of 0.3 to 0.9 g/cc.

Process for roughening surface of epoxy resin

Abstract: Epoxy resin is pretreated with an organic solvent such as furfuryl alcohol, methyl alcohol, ethyl alcohol, n-propyl alcohol, iso-propyl alcohol, formic acid, acetic acid, propionic acid, butyric acid, methyl formate, ethyl formate, propyl formate, methyl acetate, ethyl acetate, propyl acetate, methyl propionate, ethyl propionate, propyl propionate, methyl butyrate, ethyl butyrate, propyl butyrate, acetone, diethyl ketone, dipropyl ketone, methylethyl ketone, diisopropyl ketone, methylpropyl ketone, ethylpropyl ketone, acetonitrile and nitromethane as a pretreating solution, and the pretreated resin is then etched with an etching solution containing hydrogen peroxide or a persulfate and sulfuric acid, or the resin is pretreated with an organic solvent containing furfuryl alcohol, methyl alcohol, ethyl alcohol, n-propyl alcohol or isopropyl alcohol, and formamide or ethylene glycol, 1,2-propylene glycol or glycerine, and the pretreated resin is etched with an etching solution containing hydrogen peroxide and sulfuric acid to roughen the surface of the resin. A good adhesiveness is obtained between the surface of the resin and a film of metal when the resin is coated with a metal.

Process for preparing semiconductor devices

Abstract: A process for preparing semiconductor devices by forming an insulation coating, such as a low melting point glass, on the surface of a semiconductor substrate and then forming a shaved groove through the insulation coating to the inner part of the semiconductor substrate. The insulation coating is one that is easily subject to cracking when shaved by a high speed rotating diamond blade having substantially parallel side surfaces. The low melting point glass and the semiconductor substrate are shaved by a diamond blade having a tapered edge which rotates in high speed, without forming a crack in the insulation coating or breaking a part of the semiconductor substrate. The semiconductor substrate is divided along the shaved groove in a dicing step to obtain separated semiconductor pellets.

Floating-type anti-oil anti-impact anti-wave barrier

Abstract: A floating type anti-oil anti-impact anti-wave barrier includes structure for intercepting oil floating on the water, for mitigating an impact force exerted by a ship or the like, and for intercepting waves. The barrier can collect oil which has flowed out onto the sea to prevent the oil from dispersing, and the barrier can be protected from damage caused by a ship, by drift, by waves, etc.

Elevator speed control system

Abstract: During the acceleration of an elevator car a command acceleration pattern in the form of frequency modulated clock pulses is counted by a first and a second counter. The first counter issues a command speed pattern. The speed pattern is integrated to calculate the distances of movement of the care which is successively stored in a random access memory at addresses determined by the speeds from the second counter, at equal increments of speed. During the deceleration the distances of movement succesively read out from the memory are compared with the residual distances to the stop floor and the second counter counts the results of the comparison down to produce an ideal speed curve. The curve supplied to the memory is also compared with the actual car speed to modify the command acceleration with the result that the actual speed follows up the ideal speed curve.

Process for recovering a solvent vapor

Abstract: The present invention is a process for recovering solvent vapor which comprises absorbing solvent vapor in a first absorbing liquid, and subsequently stripping the solvent vapor to regenerate the first absorbing liquid. The stripped solvent vapor may be reabsorbed in a second absorbing liquid. The second absorbing liquid may be under greater than atmospheric pressure. Regenerating the first absorbing liquid may occur at pressures only slightly below atmospheric pressure, i.e., a low vacuum, by recycling the absorbing liquid to a regenerator. Because the regenerating process does not require the use of a high vacuum, the gas recovery apparatus may be more economically constructed and operated.

Process for producing the polypropylene film for electrical appliances

Abstract: A polypropylene film which is useful for electrical devices is produced by biaxially stretching an unstretched polypropylene molded article having, on at least one side, a surface layer having β-form crystals, of mean diameter over 7 μm, under such conditions that the stretching temperature at the stretch initiation point is in the range of 145° to 176° C., and the stretch ratio in one direction is less than a factor of 8. The resulting stretched polypropylene film is characterized by excellent mechanical properties, a very dense inner structure, and high air-tightness. The surface of the film has an efficiently roughened, fine, uneven structure containing crater-like patterns or an isotropic network structure and an anisotropic network structure, which is aligned in the extrusion direction. Therefore, the polypropylene film of the present invention can be readily impregnated with insulating oils, and hence can be used in various electrical devices, such as capacitors, electric cables, transformers and the like.

Method for producing acrylamide polymers

Abstract: METHOD FOR PRODUCING ACRYLAMIDE POLYMERS ABSTRACT OF THE DISCLOSURE Concentrated aqueous solution of acrylamide or mixture of acrylamide and other vinyl monomer is polymerized in the presence of catalyst, and the polymerization solution is to be boiled by heat of polymerization in the course of polymerization. Obtained hydrous gels of acrylamide polymers are porous, water soluble and are easily dehydrated by conventional dehydration techniques.

Polyolefin composition containing a novel modified filler

Abstract: A filled polyolefin composition is described based upon a polyolefin resin filled with a mechanico-chemically modified filler. The filler, which may be the usual filler material, is modified by comminution, by mechanically exposing fresh surfaces of the original filler particles in the presence of a polymer of a vinyl monomer. The vinyl monomer should have at least one polar group capable of bonding with the freshly exposed surfaces of filler material as they are formed and exposed during the mechanical operation. The process for the production of the modified filler is included.

Seat walk-in device for automobiles

Abstract: In a front seat of an automobile having a seat back tiltable with respect to the seat cushion, a seat walk-in device, which moves interlockingly with the tilting of the seat cushion, is interposed between a stationary rail fixed on the automobile's floor and a sliding rail fixed under the seat cushion. To provide adequate space for entering or leaving the rear-seat space, the front seat is moved toward the front of the automobile by tilting the seat back forward. On completion of the entering or leaving, the front seat is moved backward after returning the seat back to an upright position. Then, the seat walk-in device automatically locks the front seat in a predetermined position.