Abstract: A transformant capable of producing isopropanol which is constructed by transferring the following genes (a) to (d) into a coryneform bacterium: (a) an exogenous gene which encodes an enzyme having acetyl-CoA acetyltransferase activity; (b) an exogenous gene which encodes an enzyme having acetoacetyl CoA:acetate CoA-transferase activity; (c) an exogenous gene which encodes an enzyme having acetoacetate decarboxylase activity; and (d) an exogenous gene which encodes an enzyme having isopropanol dehydrogenase activity.

Abstract: A cathode material for a secondary battery containing a cathode active material represented by the general formula LinFePO4 (wherein n represents a number from 0 to 1) as a primary component and molybdenum (Mo), wherein the cathode active material LinFePO4 is composited with the Mo. In a preferred embodiment, the cathode material has conductive carbon deposited on the surface thereof.

Abstract: A hydrogen producing method by culturing a microorganism having a hydrogenase gene, in which a lactic acid biogenetic path and a succinic acid biogenetic path in anaerobic metabolic paths are inactivated, under an anaerobic condition in the presence of organic substrate. The microorganism may further have a formate dehydrogenase gene. The microorganism may be Escherichia coli which is a facultative anaerobic bacterium.

Abstract: Disclosed is a method for recovering carbon dioxide from a gas containing carbon dioxide, comprising the step (1) of bringing a gas containing carbon dioxide into contact with an aqueous solution containing 2-isopropylaminoethanol and at least one substance selected from the group consisting of piperazines and alkanolamines to absorb carbon dioxide into the aqueous solution; and the step (2) of heating the aqueous solution containing carbon dioxide absorbed therein, which is obtained in the step (1), to separate and recover carbon dioxide from the solution.

Abstract: Lithium cobaltate forming the positive electrode of a lithium secondary battery is subjected together with lithium metal to reducing reaction in molten lithium chloride to produce lithium oxide and to precipitate and separate cobalt or cobalt oxide. The lithium oxide is subjected to electro-deposition in molten lithium chloride contained in a lithium electro-deposition tank provided with an anode and a cathode to recover lithium metal deposited on the cathode.

Abstract: The present invention provides a process for highly efficiently producing ethanol at a high productivity consisting of using a coryneform bacterium which has been transformed by a DNA containing a gene expressing pyruvate decarboxylase activity and, if desired, a gene expressing alcohol dehydrogenase activity under a regulatory sequence allowing for the expression, under ethanol production conditions wherein this bacterium does not substantially proliferate to produce ethanol.

Abstract: To provide: a production method using a catalyst which can substantially suppress leaching of active metal components and exhibit high activity for both reactions of transesterification of glycerides and esterification of free fatty acids each contained in a fat or oil; and the catalyst.

Abstract: It is intended to obtain anaerobic microbial cells in an amount sufficient for hydrogen generation reaction, impart a hydrogen generation function to an aerobic microorganism within a short time and provide an industrial advantageous method of producing hydrogen. The above object can be established by providing a highly efficient microbial hydrogen production method characterized by comprising culturing a microorganism having a formate dehydrogenase gene and a hydrogenase gene under aerobic conditions, culturing the resulting microbial cells under anaerobic conditions in a liquid culture medium containing a formic acid compound, and then using the thus obtained cells for hydrogen generation.

Abstract: The present invention provides an aerobic coryneform bacterium transformant in which a lactate dehydrogenase gene is disrupted, and a pyruvate carboxylase gene is recombined so as to be highly expressed by a genetic engineering method. The aerobic coryneform bacterium transformant of the present invention can produce dicarboxylic acids from saccharides at a high production rate.

Abstract: A method for removing harmful substances in a vent gas containing a halogen or halogen compound gas remaining in the pipeline of a cylinder cabinet, which comprises contacting the vent gas with a treating agent comprising an alkaline earth metal compound, an alkali metal compound, zeolite, and a carbonaceous material.

Abstract: A hydrogen producing method by culturing a microorganism having a hydrogenase gene, in which a lactic acid biogenetic path and a succinic acid biogenetic path in anaerobic metabolic paths are inactivated, under an anaerobic condition in the presence of organic substrate. The microorganism may further have a formate dehydrogenase gene. The microorganism may be Escherichia coli which is a facultative anaerobic bacterium.

Abstract: A charge separation heterojunction structure which uses a fullerene polymer film as a part of its constituent materials and which may be used to produce a solar cellor a light emitting diode superior in durability, physical properties of electrons and economic merits. The heterojunction structure is such a structure in which an electron-donating electrically conductive high-polymer film and an electron-accepting fullerene polymer film are layered between a pair of electrodes at least one of which is light transmitting. In forming the layers, the fullerene polymer film is identified using in particular the Raman and Nexafs methods in combination so that upper layers are formed after identifying the polymer film.

Abstract: A method for removing harmful substances in a vent gas containing a halogen or halogen compound gas remaining in the pipeline of a cylinder cabinet, which comprises contacting the vent gas with a treating agent comprising an alkaline earth metal compound, an alkali metal compound, zeolite, and a carbonaceous material.

Abstract: Lithium cobaltate forming the positive electrode of a lithium secondary battery is subjected together with lithium metal to reducing reaction in molten lithium chloride to produce lithium oxide and to precipitate and separate cobalt or cobalt oxide. The lithium oxide is subjected to electro-deposition in molten lithium chloride contained in a lithium electro-deposition tank provided with an anode and a cathode to recover lithium metal deposited on the cathode.

Abstract: A method for preparing a carbonaceous complex struture including forming an adherent carbonaceous thin film on a smooth surface of a substrate and forming an adherent fullerine thin film on the thus formed carbonaceous thin film.

Abstract: By employing a 1% potassium-added cobalt catalyst prepared by adding potassium to cobalt as a catalyst for depositing carbon from mixed gas containing a carbon source, it was possible to lower the optimum catalyst temperature from 510-520° C. to 410-430° C., increase the maximum conversion ratio from 6.8% to 18.0% and increase both of the mean conversion ratio and the carbon deposition quantity as compared with the case of employing a catalyst of simple cobalt.

Abstract: This invention relates to resin material for gas separation base containing a cardo polyimide structure in which the hydrogen atoms in the side-chain benzyl and/or allyl position are halogenated at a rate of modification by halogen of 0.

Abstract: The temperature of a catalyst is heated to 535° C. with an electric furnace for feeding hydrogen gas into a reaction tube at a flow rate of 50 cc/min. for two hours and reducing the catalyst, and thereafter reaction gas containing hydrogen and carbon dioxide in a mixing ratio of 2:1 is fed into the reaction tube. The carbon dioxide contained in the reaction gas is reduced with hydrogen by coming into contact with the catalyst, and carbon such as carbon nanotube is precipitated on the surface of the catalyst. The carbon nanotube or the like can be produced under a lower temperature and ordinary pressure with no requirement for a specific apparatus for high-temperature and high-pressure reaction.

Abstract: An anaerobic fermentation part generates gas containing methane and carbon dioxide by anaerobically fermenting biomass. The gas is passed to a methane.carbon dioxide separation part to be separated into methane and carbon dioxide, and part of the separated methane is fed to a methane reforming part to be decomposed into carbon and hydrogen under the presence of a catalyst. The carbon dioxide separated in the methane.carbon dioxide separation part and the hydrogen formed in the methane reforming part are fed to a carbon dioxide fixing part, which in turn reacts the carbon dioxide with the hydrogen under the presence of a catalyst for continuously forming carbon and hydrogen and fixing the carbon dioxide.

Abstract: Disclosed are a polymerizable sugar ester of the formula shown below and a process for the production thereof:S(OH).sub.q-1 --OOC--R--COOCH.dbd.CH.sub.2wherein S(OH).sub.q-1, represents a sugar residue obtained by removing one hydroxyl group from a sugar compound composed of a sugar skeleton S and q number of hydroxyl groups bonded thereto, and R represents an alkylene group. The polymerizable sugar ester is produced by reacting a sugar compound represented by the following general formula:S(OH).sub.qwherein S represents the sugar skeleton and q is the number of the hydroxyl groups bonded thereto, with a divinyl ester of an aliphatic dicarboxylic acid represented by the following general formula:CH.sub.2 .dbd.CHOOC--R--COOCH.dbd.CH.sub.2in the presence of a hydrolytic enzyme. The polymerizable sugar ester gives a sugar-based polymer by polymerization.