DEVICE FOR RECOVERING OXYGEN DISSOLVED IN WATER

    公开(公告)号:JPS6424003A

    公开(公告)日:1989-01-26

    申请号:JP17986187

    申请日:1987-07-17

    Abstract: PURPOSE:To reduce the load of a water supply system and to decrease laminar film resistance by discharging exhaust gas in the vicinity of an interface between a gas separation membrane and water, and utilizing the movement of the bubbles generated at this time. CONSTITUTION:A hollow yarn-based gas separation membrane 3 is fixed in the housing 1 of the device for recovering oxygen dissolved in water by means of the upper and lower fixing layer 2 consisting of an adhesive. The exhaust gas used in combustion, respiration, etc., is discharged through a diffusion plate 5, and sent up as bubbles 10 in a passage 8 between membranes while accompanying and circulating the water from an outlet 4. The laminar film resistance on the surface of the gas separation membrane 3 is simultaneously removed, and the exhaust gas is discharged from an outlet 9 along with the water 12. Meantime, the oxygen and other gases dissolved in water is passed through the gas separation membrane 3, recovered, and discharged from a line 7. By this method, the device can be miniaturized, and energy can be saved.

    IMPREGNANT FOR POROUS MATERIAL AND METHOD OF SEALING PORE OF MATERIAL TO BE TREATED

    公开(公告)号:JPS63295693A

    公开(公告)日:1988-12-02

    申请号:JP12973887

    申请日:1987-05-28

    Abstract: PURPOSE:To provide an impregnant which can seal pores of an inorganic material, such as metallic casting or sinter, in a relatively short time at a low temp. and which comprises, as main ingredients, a particular polymerizable vinyl monomer and a cyclodextrin inclusion compd. of a polymerization initiator. CONSTITUTION:An impregnant for a porous material mainly composed of a polymerizable vinyl monomer contg. (meth)acrylic ester and a cyclodextrin inclusion compd. prepd. by treating a polymerization initiator (e.g., a peroxide or azonitrile initiator) with cyclodextrin. This impregnant prolongs its storage file and working file through inclusion of a polymerization initiator, and heating of the inclusion compd. causes the polymerization initiator to be released therefrom, the inclusion compd. to be decomposed, and polymerization to be initiated, so that the impregnant can be cured in a relatively short time at a low temp. The pores of a material to be treated can be sealed by filling the pores with the impregnant, washing the surface of the material with water to remove excessive impregnant, and treating the material with hot water or hot air to cure the impregnant present in the pores.

    PRODUCTION OF HIGH-HARDNESS PLASTIC MOLDING

    公开(公告)号:JPS63221115A

    公开(公告)日:1988-09-14

    申请号:JP5343287

    申请日:1987-03-09

    Abstract: PURPOSE:To produce a high-hardness plastic molding having a two-dimensional covalent bond-containing network structure, being highly crystalline and excellent in hardness and modulus, by polymerizing a diacetylenic nylon salt compound by heating in a mold under a high pressure. CONSTITUTION:A high-hardness plastic molding is produced by packing a diacetylenic nylon salt compound of formula I [wherein R1 and R2 are each a (substituted)alkylene, cycloalkylene or arylene] into a mold of any desired shape and polymerizing it by heating at 100-400 deg.C and 0.5X10 -15X10 atm. A highly crystalline plastic molding in the form of a two-dimensional covalent bond-containing network can be easily produced. This molding has excellent strength and modulus and such a high hardness as to be equivalent to that of a metal, so that it is very useful as a light high-hardness material. The compound of formula I can be quantitatively obtained as a crystalline form by mixing equimolar amounts of a diacetylenecarboxylic acid of formula II (wherein R1 is as defined above) and a diamine of formula III (wherein R2 is as defined above).

    METHOD FOR DYNAMICALLY CONTROL MANIPULATOR

    公开(公告)号:JP2000301480A

    公开(公告)日:2000-10-31

    申请号:JP11417299

    申请日:1999-04-21

    Abstract: PROBLEM TO BE SOLVED: To provide a method for dynamically controlling two manipulator pairs independently controllable by a single actuator by utilizing a difference between nonlinear dynamics and having a free joint. SOLUTION: In a plurality of manipulator pairs independently controllable by a single direct controllable actuator and having a free joint, a parameter branch figure regarding two control parameters is produced based on given data. By using the figure, some of a plurality of the manipulators are selected or movement of all the manipulators is dynamically controlled according to a using purpose.

    TREATMENT OF FIBER STRUCTURE
    18.
    发明专利

    公开(公告)号:JPH0359179A

    公开(公告)日:1991-03-14

    申请号:JP19324389

    申请日:1989-07-26

    Abstract: PURPOSE:To promote the reaction of a polymer and a compound using minimum amount of water necessary for the processing treatment by impregnating a fiber with a compound reactive with the fiber constituting polymer, laminating with a hydrated polymer gel sheet capable of reversibly sucking and releasing water by temperature change and heating the laminate at a temperature above the phase-transition temperature of said gel. CONSTITUTION:For example, in the thinning processing of a polyester fiber with sodium hydroxide or cotton fiber with cellulase, the fiber is impregnated with the compound reactive with the fiber constituting polymer and subjected e.g. to intermediate drying. The treated fiber is laminated with a hydrated polymer gel sheet capable of reversibly sucking and releasing water by temperature change (e.g. crosslinked gel of polyvinyl methyl ether) and the laminate is sealed, heated at a temperature above the phasetransition temperature of the polymer gel and maintained at the temperature. Water is released from the gel by this treatment to promote the reaction of the polymer and the compound in moistened state. The use of the gel is effective in preventing the waste of large amount of water in contrast to conventional process and enables the supply of necessary minimum amount of water in high efficiency to perform an energy-saving processing of the fiber.

    NOVEL RECOMBINANT PLASMID PGRF44-22

    公开(公告)号:JPH02142480A

    公开(公告)日:1990-05-31

    申请号:JP29420388

    申请日:1988-11-21

    Abstract: NEW MATERIAL:A plasmid pGRF44-22, stably replicative in Escherichia coli and capable of imparting trimethoprim and ampicillin tolerance to host Escherichia coli and encoding a fused protein of a derivative of a bovine growth hormone releasing factor having an amino acid sequence expressed by the formula to a dihydrofolate reductase. USE:For producing a bovine growth hormone releasing factor(GRF) and dihydrofolate reductase(DHFR). PREPARATION:For example, a DNA fragment prepared by cleaving a plasmid pMEK2 for producing leucine enkephalin with a restriction enzyme is linked to a DNA fragment obtained by cleaving a recombinant plasmid pGRF2-15 capable of coding DHFR and an amino acid sequence of the 1st to 29th residues of a bovine GRF using a T4-DNA ligase, inserted into Escherichia coli and cultured to select the resultant colony. Thereby, the objective pGRF44-22 is obtained.

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