Abstract: In a disk drive using a motor frame, the motor frame is provided with a projection preliminarily formed to protrude on its principal surface. The projection has a slit formed at its base. A printed circuit board is inserted into the slit to be engaged with the projection. The motor frame is provided with a positioning boss fitted into a positioning hole formed in the printed circuit board. The motor frame is further provided with a plurality of board holding portions bent upward on the principal surface to be engaged with end portions of the printed circuit board. Preferably, the positioning boss is formed by coining.

Abstract: In a flexible disk drive, a guide member is used for guiding leads of a motor mounted on a main surface of the main frame to a circuit board attached to a back surface of the main frame. The main frame has a protrusion which protrudes into a side of the back surface and which has a top surface with an opening. The guide member comprises a first portion fixed to the top surface, a second portion fixed to between the circuit board and the main frame, and a third portion connecting the first portion with the second portion. The guide member is disposed between the main frame and the leads form the opening to the circuit board and prevent the leads from short-circuiting.

Abstract: In a floppy disk drive for driving a floppy disk loaded therein, a main frame has a principal surface defining a disk-loading area in which the floppy disk is loaded. A shaft portion is protruded from the principal surface of the main frame. The shaft portion is formed integral with the main frame from a single member. An eject lever is attached to the shaft portion to be rotatable around the shaft portion. The eject lever is for ejecting the floppy disk from the disk-loading area.

Abstract: In a floppy disk drive having a main frame in which a floppy disk is inserted and a DD motor for rotatably driving the floppy disk inserted in the main frame, the floppy disk drive has a motor frame for mounting the DD motor thereon that is constituted by one piece integrated by the main frame. Preferably, the motor frame part may have a drawn-shape obtained by drawing the main frame. In addition, the floppy disk drive has an electronic processing arrangement for a frequency generation pattern. The electronic processing arrangement gives play to a function equivalent to the frequency generation pattern required to control the DD motor.

Abstract: In a method of mounting a drive motor to a frame member included in a disk drive which is for driving a flexible disk, the frame member is formed to have a main frame portion and a motor frame portion integrally formed to the main frame portion. The main frame portion defines a position of the flexible disk in the disk drive. Use is made of a jig adapted to engage with the main frame portion and a bearing portion provided to a stator of the drive motor. On positioning the stator relative to the motor frame portion, the jig is engaged with the main frame portion and the bearing portion. Under this state, the stator is fixed to the motor frame portion. After that, the bearing portion rotatably supports a rotation shaft coupled to a rotor of the drive motor.

Abstract: Ethylene/C6-8 alpha-olefin copolymers are characterized by melt tension, flow activation energy and haze. The copolymers have excellent moldability and produce films of excellent transparency and mechanical strength.

Abstract: A locking plate 40 is provided near the front end of a magnetic disk mounted on a magnetic disk drive to prevent downward sliding movement of a disk holder 13. The locking plate is located at a first position between a chassis 11 and the disk holder to lock the disk holder when no magnetic disk is mounted on the magnetic disk drive. When the magnetic disk is mounted on the magnetic disk drive, the locking plate engages with the front end of the magnetic disk and moves to a second position out of the position between the chassis and the disk holder.

Abstract: An ethylene copolymer composition comprising an ethylene/&agr;-olefin copolymer [A1] obtained by using a catalyst for olefin polymerization containing an organoaluminum oxy-compound (a) and at least two kinds of specific metallocene compounds (b), and one (co)polymer selected from the group consisting of [B1] a low-density polyethylene obtained by high-pressure radical polymerization, [B2] a crystalline polyolefin and [B3] an olefin type elastomer. An ethylene copolymer composition comprising an ethylene/&agr;-olefin copolymer [A2] having specific properties, and one (co)polymer selected from the group consisting of [B1] a low-density polyethylene obtained by high-pressure radical polymerization, [B2] a crystalline polyolefin and [B3] an olefin type elastomer.

Abstract: The present invention provides a warmer in the form of a sheet shaped heat generating body which is obtained using a warming composition that generates heat when in contact with air, in which the warming composition can be easily dispersed and held in a uniform arrangement, and in which the warming composition is prevented from leaking; and provides a method for manufacturing such a sheet. The sheet shaped heat generating body pertaining to the present invention is obtained by supporting a warming composition and a heat-fusible adhesive powder on a nonwoven fabric (a), superposing a nonwoven fabric (b) on the upper surface, heating and pressing the assembly with the aid of a molding press, and impregnating the resulting sheet with water or an aqueous solution of an inorganic electrolyte.

Abstract: A process for producing acrylic acid from propane and oxygen gas through a vapor-phase catalytic oxidation reaction, said process comprising conducting the reaction using as a catalyst a metal oxide containing metallic elements Mo, V, Sb, and A (provided that A is at least one element selected from the group consisting of Nb, Ta, Sn, W, Ti, Ni, Fe, Cr, and Co). The metal oxide is prepared by a process including specific steps (1) and (2). The metal oxide may be supported on a compound containing specific elements.

Abstract: The present invention relates to an assay method of chiroinositol which comprises reacting a specimen containing chiroinositol with1) a dehydrogenase, which catalyses at least reversible reaction with a substrate of chiroinositol in the presence of a coenzyme selected from NAD(P)s and a coenzyme selected from thio-NAD(P)s,2) A1 and3) B1to form cycling reaction of the formula ##STR1## wherein a product is a compound, from which 2 or 4 hydrogen atoms are deleted from chiroinositol, A1 is NAD(P)s or thio-NAD(P)s, A2 is a reduced form of A1, B1 is a reduced form of NAD(P)s in case of A1 being thio-NAD(P)s or a reduced form of thio-NAD(P)s in case of A1 being NAD(P)s and B2 is an oxidized form of B1, and determining an amount of converted A2 or B1 by the said reaction, and a composition for assay of chiroinositol. Chiroinositol can be assayed by accurate, simple, low price and high sensitive method.

Abstract: An ethylene/.alpha.-olefin copolymer obtained by copolymerizing ethylene with an .alpha.-olefin of 3 to 20 carbon atoms in the presence of a catalyst for olefin polymerization comprising an organoaluminum oxy-compound (a) and at least two kinds of transition metal compounds (b). This ethylene/.alpha.-olefin copolymer has high melt tension and high flowability. A graft modified ethylene/.alpha.-olefin copolymer obtained by graft polymerizing the above-mentioned ethylene/.alpha.-olefin copolymer with a polar monomer. An ethylene copolymer composition comprising the above-mentioned graft modified ethylene/.alpha.-olefin copolymer and polyolefin. The ethylene/.alpha.-olefin copolymer of the invention is excellent in moldability. From this copolymer, a film having high transparency and high mechanical strength can be produced. The graft modified ethylene/.alpha.-olefin copolymer of the invention is excellent in heat stability and moldability.

Abstract: A process for producing acrylic acid from propane and oxygen gas through a vapor-phase catalytic oxidation reaction, said process comprising conducting the reaction using as a catalyst a metal oxide containing metallic elements Mo, V, Sb, and A (provided that A is at least one element selected from the group consisting of Nb, Ta, Sn, W, Ti, Ni, Fe, Cr, and Co). The metal oxide is prepared by a process including specific steps (1) and (2). The metal oxide may be supported on a compound containing specific elements.

Abstract: The present invention provides an insulating film formed on a surface of a substrate and made of a material containing oxygen, wherein a charge correction is carried out at a 1s peak position of a carbon adsorbed on a surface of the insulating film, and relative amounts between first to fourth peaks obtained when an oxygen 1s peak of the insulating film is decomposed by a same half width of 1.208 eV into a first peak at the oxygen 1s peak site obtained from an .alpha.-quartz crystal charge corrected similarly, and second to fourth peaks at positions of +0.87 eV, -0.35 eV and -0.83 eV, respectively from the oxygen 1s peak position, have relationship of that the third peak is higher than the second and fourth peaks, and the first peak is higher than the third peak, when a portion about 1 nm thick from the surface of the substrate of the insulating film is analyzed by a photoelectronic spectral method for an photoelectron extracting angle of 15.degree. or less.

Abstract: A sorbitol kinase having at least the following physicochemical properties:(1) Enzymatic action: utilizing mainly ATP, but not substantially phosphoenolpyruvate, as the phosphate donor catalyzing a reaction of generating sorbitol-6-phosphate and ADP from sorbitol and ATP of the formula,sorbitol+ATP.fwdarw.sorbitol-6-phosphate+ADP(2) Substrate specificity: for sorbitol(3) N-terminal amino acid sequence: containing ##STR1## (4) Heat stability stable at least up to 60.degree. C. when a 100 mM Tris-HCl buffer (pH 8.5, containing 0.5 U/ml of sorbitol kinase) is heated for 15 minutes at various temperatures and the residual acitvity is measured.

Abstract: An ethylene/.alpha.-olefin copolymer composition including (I) a graft-modified ethylene/.alpha.-olefin copolymer composition and (II) a polyolefin. The graft-modified composition is prepared by graft copolymerizing an ethylene/.alpha.-olefin copolymer with a polar monomer. The ethylene/.alpha.-olefin copolymer composition includes first and second ethylene/.alpha.-olefin copolymers. The copolymers are each prepared in the presence of a polymerization catalyst containing (a) an organoaluminum oxy compound and (b) for the first ethylene/.alpha.-olefin copolymer at least two kinds, and for the second ethylene/.alpha.-olefin copolymer one kind, of compounds of Group IV transition metals of the periodic table containing a ligand having a cyclopentadienyl skeleton. The graft-modified ethylene/.alpha.-olefin copolymer composition is blended with a polyolefin, such as by mechanical or solution blending, at a weight ratio (I) to (II) of 1:99 to 99:1.

Abstract: The present invention is directed to a method for the quantitative determination of ammonia, an .alpha.-amino acid and an .alpha.-keto acid corresponding to the .alpha.-amino acid, or a chemical substance producing any one of these compounds. The present invention is also directed to an analytical composition for use in the above method. The method of the present invention ensures rapidness and accuracy in the determination of ammonia, .alpha.-amino acids or .alpha.-keto acids, even with the use of a small quantity of a biological sample. This method is very useful in application fields, such as clinical diagnosis and food testing.

Abstract: A graft-modified ethylene/.alpha.-olefin copolymer composition is prepared by graft copolymerizing an ethylene/.alpha.-olefin copolymer. The ethylene/.alpha.-olefin copolymer composition includes first and second ethylene/.alpha.-olefin copolymers. The copolymers are each prepared in the presence of a polymerization catalyst containing (a) an organoaluminum oxy compound and (b) for the first ethylene/.alpha.-olefin copolymer at least two kinds, and for the second ethylene/.alpha.-olefin copolymer one kind, of compounds of Group IV transition metals of the periodic table containing a ligand having a cyclopentadienyl skeleton. The ethylene/.alpha.-olefin copolymer composition may be blended with a polyolefin by mechanical or solution blending. The copolymer compositions have excellent moldability and heat stability properties and forms films having high transparency and mechanical strength.

Abstract: An ethylene/.alpha.-olefin copolymer obtained by copolymerizing ethylene with an .alpha.-olefin of 3 to 20 carbon atoms in the presence of a catalyst for olefin polymerization comprising an organoaluminum oxy-compound (a) and at least two kinds of transition metal compounds (b). This ethylene/.alpha.-olefin copolymer has high melt tension and high flowability.

Abstract: Ethylene copolymer compositions comprise: an ethylene/.alpha.-olefin copolymer component comprising at least one ethylene/.alpha.-olefin copolymer having a density within a specific range, a melt flow rate (MFR) within a specific range, an amount of an n-decane-soluble portion within a specific range and a melt tension (MT) that satisfies a specific relation with the MFR; and a (co)polymer component comprising one (co)polymer selected from the group consisting of a low-density polyethylene obtained by high-pressure radical polymerization, a crystalline polyolefin and an olefin elastomer. The ethylene copolymer compositions are excellent in heat stability and moldability, and able to form films of high transparency, high mechanical strength and anti-blocking resistance.