Abstract: The present invention relates to a polymer having a melt tension (MT (g)) substantially the same as or lower than that of a conventional polymer which is substantially the same as the polymer in the recurring unit of the main skeleton, the molecular weight, the molecular weight distribution and the crystallinity, and having a flow activation energy (Ea (KJ/mol)) larger than a value obtained by adding 5 KJ/mol to the Ea value of the conventional polymer. A preferred example of the polymer is a branched polyolefin comprising 50 to 100% by mol of recurring units derived from ethylene and 0 to 50% by mol of recurring units derived from an ?-olefin of 3 to 20 carbon atoms and having the following properties: the flow activation energy (Ea (KJ/mol)) and the ?-olefin content (C (% by weight)) satisfy a specific relation, and the melt tension (MT (g)) and the melt flow rate (MFR (g/10 min)) satisfy a specific relation. This branched polyolefin is excellent in moldability and mechanical strength.

Abstract: The present invention provides ethylene polymers capable of preparing various molded articles such as films, sheets or the like, and having excellent moldability, particularly excellent high-speed moldability. The ethylene polymers of the present invention have a density and molecular weight distribution in specific ranges. The first ethylene polymer is characterized by having (C) a ratio (MFR10/MFR2) of a melt flow rate (MFR10) at 190° C. under a load of 10 Kg to a melt flow rate (MFR2) at 190° C. under a load of 2.16 Kg of from 16.2 to 50. The second ethylene polymer is characterized by having (C) a ratio (MFR10/MFR2) from 12 to 50. The third ethylene polymer is characterized by having (D) a relation of ?2/?1?18 where ?1 and ?2 denote angular velocity (rad/sec) when complex elastic modulus G*(dyne/cm2) at 200° C. is 5.0×105 dyne/cm2 and 2.0×106 dyne/cm2, respectively, which are determined by measurement of the angular velocity dependence of the complex elastic modulus of the copolymer.

Abstract: A case body which can accommodate a display panel and a traveling unit provided movably inside this case body are provided. In the traveling unit, a traveling mechanism for performing reciprocation and a panel revolution mechanism for performing an revolution operation of the display panel ejected from the case body are provided. A panel coupling portion attachably and detachably coupling the display panel with the traveling unit is provided. The panel coupling portion is rotated by the panel revolution mechanism in order to revolve the display panel. A locking tool is provided in the panel coupling portion, and the locking tool is moved between the release position at which separation of the display panel from the panel coupling portion is allowed by the panel revolution mechanism and the lock position at which the separation of the display panel from the panel coupling portion is prevented.

Abstract: An ethylene copolymer composition comprising an ethylene/?-olefin copolymer, A-4, of ethylene with an ?-olefin of 3 to 20 carbon atoms in an amount of 65-98% by weight, whose melt tension, MT, at 190° C. and MFR satisfy the relation MT>2.2×MFR?0.84, and at least one crystalline polyolefin, B-2, in an amount of 1-40% by weight selected from the group consisting of, B-I, an ethylene homopolymer or a copolymer of ethylene with an ?-olefin of 3 to 20 carbon atoms, prepared using a non-metallocene type catalyst, B-II, a propylene hompolymer or a copolymer of propylene with at least one olefin selected from ethylene and an ?-olefin of 4 to 20 carbon atoms, and, B-III, a homopolymer of an ?-olefin of 4 to 20 carbon atoms or a copolymer of ?-olefins of 4 to 20 carbon atoms, and articles made from the composition.

Abstract: An ethylene copolymer is provided which is a copolymer of ethylene and an ?-olefin of 3 to 20 carbon atoms and has the following properties: (a) the melt index (MI2) at 190° C. under a load of 2.16 kg is in the range of 0.0001 to 1000 g/10 min, (b) the density is not more than 0.899 g/cm3, (c) the relationship between a vinyl group amount and MI2 of the polymer satisfies the following expression: (vinyl group amount: number of vinyl groups/1000 carbon atoms)?0.004509+0.000815×log(MI2), and (d) the relationship between a vinylidene group amount and MI2 of the polymer satisfies the following expression: (vinylidene group amount: number of vinylidene groups/1000 carbon atoms)?0.013528+0.002445×log(MI2).

Abstract: A transmission power control apparatus is adapted to control a reference value for controlling a transmission power of a mobile terminal equipment based on a reception quality of a plurality of radio access bearers at a base station apparatus, with respect to a physical channel to which the plurality of radio access bearers are mapped, when making a radio connection between the mobile terminal equipment and the base station apparatus in a mobile communication system.

Abstract: A recording medium drive unit includes an insertion opening through which a recording medium is inserted, a holder receiving the recording medium inserted through the insertion opening, a connector, a holder drive part moving the holder to a loading position so that the recording medium is connected to the connector, and a clamp mechanism pressing opposing sides of the recording medium when the recording medium is inserted into the holder. The clamp mechanism is provided to a side of the holder so as to be slidable thereon, and holds the recording medium by the opposing sides thereof.

Abstract: An ethylene copolymer composition comprising an ethylene/&agr;-olefin copolymer, A-4, of ethylene with an &agr;-olefin of 3 to 20 carbon atoms in an amount of 65-98% by weight, whose melt tension, MT, at 190° C. and MFR satisfy the relation MT>2.2×MFR−0.84, and at least one crystalline polyolefin, B-2, in an amount of 1-40% by weight selected from the group consisting of, B-I, an ethylene homopolymer or a copolymer of ethylene with an &agr;-olefin of 3 to 20 carbon atoms, prepared using a non-metallocene type catalyst, B-II, a propylene hompolymer or a copolymer of propylene with at least one olefin selected from ethylene and an &agr;-olefin of 4 to 20 carbon atoms, and, B-III, a homopolymer of an &agr;-olefin of 4 to 20 carbon atoms or a copolymer of &agr;-olefins of 4 to 20 carbon atoms, and articles made from the composition.

Abstract: An ethylene copolymer composition comprising an ethylene/&agr;-olefin copolymer (A-1), which has a density, a melt flow rate (MFR), an amount of a n-decane-soluble portion in the specific ranges and whose melt tension (MT) at 190° C. and MFR satisfy the relation MT>2.2×MFR−0.84, and one (co)polymer selected from the group consisting of (B-1) a low-density polyethylene obtained by high-pressure radical polymerization, (B-2) a crystalline polyolefin and (B-3) an olefin type elastomer. Also disclosed is an ethylene copolymer composition comprising an ethylene/&agr;-olefin copolymer composition and the low-density polyethylene (B-1) obtained by high-pressure radical polymerization, said ethylene/&agr;-olefin copolymer (A-2) and (A-3) both having physical properties similar to those of the above ethylene/&agr;-olefin copolymer (A-1) and having intrinsic viscosities different from each other.

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: A method for assaying ammonia and/or ammonium ions contained in a liquid sample which comprises subjecting the sample to a reaction at least in the presence of an NAD synthetase, deamidated NAD, ATP, Mg2+ ions and/or Mn2+ ions, a dehydrogenase capable of forming ammonia molecules from an amine substrate and an oxidized NAD, and the amine substrate, and then determining the amounts of the ingredients consumed or generated by the reaction; and an assaying composition comprising all of the above-specified ingredients. The method is inexpensive and is effective in accurately assaying ammonia and/or ammonium ions present in a few minutes.

Abstract: The present invention provides a process for manufacturing an molded article that involves the occurrence of reduced number of gels and less corrosion of the molding equipment in high-temperature molding, particularly extrusion molding onto such substrate as paper; an extruded article; and an olefin polymer composition suitable therefor. The olefin polymer composition comprises an olefin polymer containing 5 to 200 ppm of aluminum, as aluminum atom, 0 to not more than 1,000 ppm of a phenolic stabilizer and 50 to 2,000 ppm of a phosphoric stabilizer.

Abstract: A process for preparing an ethylene/&agr;-olefin copolymer, which includes the steps of (A) copolymerizing ethylene and an &agr;-olefin of 3 to 20 carbon atoms by continuous vapor phase polymerization; (B) copolymerization is conducted in the presence of a prepolymerized catalyst obtained by prepolymerizing an olefin in the presence of (a) a transition metal compound, (b) an organoaluminum oxy-compound, (c) a fine particle carrier, and optionally (d) an organoaluminum compound; and (C) copolymerization is conducted under such condition that the partial pressure of sum total of ethylene and &agr;-olefin is 10 to 28 kg/cm2. The resulting ethylene/&agr;-olefin copolymer has the following properties: (i) the density is in the range of 0.880 to 0.960 g/cm3, (ii) the melt flow rate of 190° C. under a load of 2.16 kg is in the range of 0.1 to 100 g/10 min, (iii) the melt tension (MT (g)) at 190° C. and the melt flow rate (MFR (g/10 min)) satisfy the relation MT≦2.2×MFR−084.

Abstract: In a mounting structure of a motor to a mounting base, the motor including a rotor having a rotation shaft for rotating a disc-shaped recording medium and a stator having a bearing portion for rotatably supporting the rotation shaft. The mounting base is provided with a shaft end receiving portion for restricting the downward movement of the rotation shaft. The mounting base is preferably a chassis provided in a disc drive and the motor is a spindle motor provided on the chassis for rotating an optical disc. The shaft end receiving portion includes a concave part integrally formed with the mounting base. According to this structure, there is no need to provide the stator with a structure for supporting one end of the rotation shaft, and this makes it possible to reduce the number of components forming the motor.

Abstract: The present invention relates to a polymer having a melt tension (MT (g)) substantially the same as or lower than that of a conventional polymer which is substantially the same as the polymer in the recurring unit of the main skeleton, the molecular weight, the molecular weight distribution and the crystallinity, and having a flow activation energy (Ea (KJ/mol)) larger than a value obtained by adding 5 KJ/mol to the Ea value of the conventional polymer. A preferred example of the polymer is a branched polyolefin comprising 50 to 100% by mol of recurring units derived from ethylene and 0 to 50% by mol of recurring units derived from an &agr;-olefin of 3 to 20 carbon atoms and having the following properties: the flow activation energy (Ea (KJ/mol)) and the &agr;-olefin content (C (% by weight)) satisfy a specific relation, and the melt tension (MT (g)) and the melt flow rate (MFR (g/10 min)) satisfy a specific relation. This branched polyolefin is excellent in moldability and mechanical strength.

Abstract: An ethylene copolymer composition comprising an ethylene/&agr;-olefin copolymer [A-1] which has a density, a melt flow rate (MFR), an amount of a n-decane-soluble portion in the specific ranges and whose melt tension (MT) at 190 ° C. and MFR satisfy the relation MT>2.2×MFR−0.84, and one (co)polymer selected from the group consisting of [B-1] a low-density polyethylene obtained by high-pressure radical polymerization, [B-2] a crystalline polyolefin and [B-3] an olefin type elastomer.

Abstract: The present invention provides a process for manufacturing an molded article that involves the occurrence of reduced number of gels and less corrosion of the molding equipment in high-temperature molding, particularly extrusion molding onto such substrate as paper; an extruded article; and an olefin polymer composition suitable therefor.

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: A process for preparing a metal oxide catalyst for acrylic acid production which comprises calcining a metal compound mixture at 400° C. or higher to prepare a metal oxide powder comprising Mo, V, Sb, and at least one element selected from the group consisting of Nb and Ta, and supporting a compound comprising at least one element selected from the group consisting of Sb, Tl, Se, As, Pb, Sn, Ag, Cu, Ru, and Rh on the metal oxide powder, and a process for producing acrylic acid by gas phase oxidation of propane using the catalyst.

Abstract: The ethylene copolymer of the invention is a copolymer (A-1) of ethylene and an &agr;-olefin of 3 to 20 carbon atoms and has the following properties: