Abstract: A powder magnetic core with improved high frequency magnetic characteristics and reduced eddy current loss is manufactured by a manufacturing method including the steps of (a) providing coated soft magnetic particles which are particles composed of soft magnetic material which each have been coated with an insulating coating, and insulator particles; (b) forming a magnetic layer by press molding the coated soft magnetic particles in a mold assembly; (c) forming an insulator layer on the magnetic layer by press molding the insulator particles in the mold assembly; and (d) repeating the steps (b) and (c) to fabricate a laminate of alternating magnetic layers and insulator layers and provide the powder magnetic core.

Abstract: Disclosed herein is a two-cycle engine that includes an exhaust port which is opened and closed at one end portion in a longitudinal direction of a cylinder; a scavenging port which is opened and closed at the other end portion in the longitudinal direction of the cylinder; and a fuel injection port which injects a fuel into the cylinder provided between the exhaust port and the scavenging port, wherein the fuel begins to be injected in a state in which at least any one of the exhaust port and the scavenging port is opened.

Abstract: A semiconductor device which can reduce a heat stress to a solder layer while suppressing an increase of thermal resistance is provided. A semiconductor device includes a semiconductor element, a solder layer which is arranged on at least one surface of the semiconductor element and a lead frame which is arranged on the solder layer so that a porous nickel plating part is sandwiched between the lead frame and the solder layer. Compared with a case that the semiconductor element and the lead frame are jointed by a solder directly, an increased part of a thermal resistance of the solder junction is held down only to a part of the porous nickel plating part and a thermal resistance applied to the solder layer can be reduced.

Abstract: A semiconductor device (1) includes: a semiconductor chip (2) having a first main surface and a second main surface opposite to the first main surface; a heat dissipating plate (3) opposed to the first main surface; a first electrode (5) disposed between the first main surface and the heat dissipating plate (3) so as to be electrically connected to the semiconductor chip (2); a pressure contact member (4) opposed to the second main surface; a second electrode (6) disposed between the second main surface and the pressure contact member (4) so as to be electrically connected to the semiconductor chip (2); and a pressure generating mechanism that generates a pressure for pressing the first electrode (5) into contact with the heat dissipating plate (3) and the semiconductor chip (2) and pressing the second electrode (6) into contact with the pressure contact member (4) and the semiconductor chip (2).

Abstract: Provided is an aluminum or aluminum alloy material having a surface treatment coating film on a surface of a substrate formed by an aluminum or aluminum alloy. The aluminum or aluminum alloy material has: a substrate formed by an aluminum or aluminum alloy; and a first protective layer and a second protective layer in the order on a surface of the substrate, wherein the first protective layer is a conversion coating film including vanadium and at least one or more types of metals selected from titanium, zirconium, and hafnium, the second protective layer is an organic coating film having a composition that includes (1) a chitosan derivative and a solubilizing agent, (2) a modified polyvinyl alcohol formed by graft polymerization of a hydrophilic polymer to a side chain of polyvinyl alcohol, and (3) a water-soluble crosslinking agent.

Abstract: A pressed-contact type semiconductor device includes a power semiconductor element, on an upper surface of which at least a first electrode is formed and on a lower surface of which at least a second electrode is formed, lead frames which face the first electrode and the second electrode of the power semiconductor element respectively, and a clip which applies a pressure to the lead frames while the power semiconductor element is sandwiched by the lead frames, wherein a metallic porous plating part is formed on a surface which faces the first electrode or the second electrode, the surface being a surface of at least one of the lead frames.

Abstract: Provided is a negative-electrode active material, which is capable of constituting a lithium ion secondary cell exhibiting excellent cell characteristics. The negative-electrode active material for a lithium ion secondary cell of the invention includes a mixed material of silicon oxide particles composed of silicon oxide and rod-shaped iron oxide particles composed of iron oxide. It is preferable to use iron oxide particles having a plurality of pores in a surface, and an electrode reaction is effectively carried out.

Abstract: A semiconductor device which can reduce a heat stress to a solder layer while suppressing an increase of thermal resistance is provided. A semiconductor device includes a semiconductor element, a solder layer which is arranged on at least one surface of the semiconductor element and a lead frame which is arranged on the solder layer so that a porous nickel plating part is sandwiched between the lead frame and the solder layer. Compared with a case that the semiconductor element and the lead frame are jointed by a solder directly, an increased part of a thermal resistance of the solder junction is held down only to a part of the porous nickel plating part and a thermal resistance applied to the solder layer can be reduced.

Abstract: A perpendicular magnetic recording medium is disclosed. The perpendicular magnetic recording medium includes a first layer, and a second layer positioned immediately below the first layer. Among the materials in the first layer and the second layer, if the interface energy when two different materials—material a and material b—are in contact is defined as Ei(a//b), the surface energy when material a exists independently is defined as Es(a), and the energy resulting by subtracting the sum of the respective surface energies (?Es) from the interface energy is defined as G(a//b), then when G(1//3)<G(1//4) holds, either G(2//4) or G(1//3) is the minimum among G(1//3), G(1//4), G(2//3) and G(2//4), and when G(1//3)<G(1//4) does not hold, G(2//4) is the minimum among G(1//3), G(1//4), G(2//3) and G(2//4).

Abstract: In a lithium ion secondary battery using a positive electrode active material made of a lithium manganese based oxide that contains Li and tetravalent Mn and having a crystal structure known as a layered rock salt structure, oxidative and reductive degradation of the non-aqueous electrolyte solution is reduced. The battery uses a non-aqueous electrolyte solution containing fluorine in one or both of the non-aqueous solvent and the electrolytic salt. For the negative electrode active material, SiOx (0.3?x?1.6) is used. The combined use of the non-aqueous electrolyte solution containing fluorine and SiOx in the negative electrode active material reduces oxidative and reductive degradation of the non-aqueous electrolyte solution.

Abstract: In a lithium-ion secondary battery using a positive-electrode active material that includes a lithium-manganese-based oxide which includes a lithium (Li) element and a tetravalent manganese (Mn) element and whose crystal structure belongs to a layered rock-salt structure, adding a compound being selected from the group consisting of Compounds (a) through (i) into the electrolytic solution leads to the following: degradations due to oxidation-reduction decompositions of the electrolytic solution, and so on, are inhibited; and not only the shelf or storage capacity and recovered capacity upgrade in the case of being stored at high temperatures, but also the rise of internal resistance is inhibited.

Abstract: The present invention is characterized in that, in a negative electrode for lithium-ion secondary battery, the negative electrode being manufactured via an application step of applying a binder resin and an active material onto a surface of collector, the binder resin is an alkoxysilyl group-containing resin that has a structure being specified by formula (I); and the active material includes a lithium-inactive metal that does not form any intermetallic compounds with lithium, or a silicide of the lithium-inactive metal, and an elemental substance of Si. It is possible to upgrade cyclic characteristics by means of using the negative electrode for lithium-ion secondary battery according to the present invention. wherein “R1” is an alkyl group whose number of carbon atoms is from 1 to 8; “R2” is an alkyl group or alkoxyl group whose number of carbon atoms is from 1 to 8; and “q” is an integer of from 1 to 100.

Abstract: It is an object of the present invention to provide a polyolefin resin dispersion composition in which the dispersed resin is stable to water or a hydrophilic substance, and which has an adhesive property to nonpolar substrates, in particular poorly adhesive polyolefin-based substrates whose surface has not been treated, is excellent in a coating property, exhibits an excellent adhesive property through drying and press bonding with heat at a temperature in a wide range regardless of whether the temperature is low or high, is excellent in water resistance and gasohol resistance and is less tacky. That is, the present invention provides the dispersed resin composition containing (a) a polyolefin resin, (b) a (meth)acrylic acid homopolymer or copolymer having a side chain comprising an esterified alkyl group, (c) a basic substance and (d) water or a hydrophilic substance, and a process for producing the same.

Abstract: Disclosed herein is a two-cycle engine that includes an exhaust port which is opened and closed at one end portion in a longitudinal direction of a cylinder; a scavenging port which is opened and closed at the other end portion in the longitudinal direction of the cylinder; and a fuel injection port which injects a fuel into the cylinder provided between the exhaust port and the scavenging port, wherein the fuel begins to be injected in a state in which at least any one of the exhaust port and the scavenging port is opened.

Abstract: Provided is an aluminum or aluminum alloy material having a surface treatment coating film on a surface of a substrate formed by an aluminum or aluminum alloy. The aluminum or aluminum alloy material has: a substrate formed by an aluminum or aluminum alloy; and a first protective layer and a second protective layer in the order on a surface of the substrate, wherein the first protective layer is a conversion coating film including vanadium and at least one or more types of metals selected from titanium, zirconium, and hafnium, the second protective layer is an organic coating film having a composition that includes (1) a chitosan derivative and a solubilizing agent, (2) a modified polyvinyl alcohol formed by graft polymerization of a hydrophilic polymer to a side chain of polyvinyl alcohol, and (3) a water-soluble crosslinking agent.

Abstract: To provide a negative electrode for lithium-ion secondary battery, negative electrode which has good cyclability by suppressing the active material from coming off or falling down from the current collector. It has a current collector 1; and an active-material layer 6 in which a conductive additive 3; and an active material 2 being surface-treated with use of a surface treatment agent that is specified by a general formula: X—Si(CH3)n—(OR)3-n wherein: “n” is 0, 1 or 2; “OR” is a methoxy group, or an ethoxy group; and “X” is a methoxy group, an ethoxy group, or a vinyl group; are bound onto a surface of the current collector 1 via a binder 4 comprising a resin that has an alkoxy group-containing silane-modified part.

Abstract: It is equipped with a negative-electrode current collector, and a negative-electrode mixture-material layer comprising a negative-electrode mixture material that includes a negative-electrode active material containing silicon (Si) and a binding agent at least, the negative-electrode mixture-material layer being formed on a surface of the negative-electrode current collector; and the binding agent includes a polyimide-silica hybrid resin being made by subjecting a silane-modified polyamic acid to sol-gel curing and dehydration ring-closing, the silane-modified polyamic acid being expressed by the following formula (wherein: “R1” specifies an aromatic tetracarboxylic dianhydride residue including 3,3?,4,4?-biphenyltetracarboxylic dianhydride residue in an amount of 90% by mole or more; “R2” specifies an aromatic diamine residue including a 4,4?-diaminodiphenyl ether residue in an amount of 90% by mole or more; “R3” specifies an alkyl group whose number of carbon atoms is from 1 to 8; “R4” specifies an alkyl

Abstract: A wiring board is provided that suppresses spreading of liquid droplets when liquid droplets are discharged using an ink-jet method. The wiring board has a plurality of layers and includes an ink-jet wiring pattern that is formed in a soluble porous membrane member of any single layer and that includes electrically conductive nanoparticles as a principal material, and a transferred wiring pattern that does not include electrically conductive nanoparticles as a principal material. One layer among the plurality of layers is an electrically insulative substrate. Another layer among the plurality of layers is a porous membrane treated member layer including a porous membrane member at one part of a region of the other layer. The ink-jet wiring pattern is formed in the porous membrane treated member layer. The transferred wiring pattern is formed in the substrate.

Abstract: Provided is a layered electronic circuit device capable of realizing high-density/high-function mounting, easily inspecting and repairing the respective constituent elements, and improving the electronic connection characteristic. The layered electronic circuit device includes a first circuit substrate (101) and a second circuit substrate (102) which are arranged in parallel such that their substrate surfaces are opposed to each other. The peripheral portion of the first circuit substrate (101) and the peripheral portion of the second circuit substrate (102) are connected to each other by connection members (10a to 10d) having a wiring member (103) and a thermal hardening anisotropic conductive sheet (107), thereby performing electric connection.

Abstract: A microminiature power converter includes a semiconductor substrate on which a semiconductor integrated circuit is formed, and a thin magnetic induction element. The magnetic induction element includes a magnetic insulating substrate having first and second principal planes and a plurality of through-holes. A coil is formed on a central region of the magnetic insulating substrate, and electrodes are formed on the first and second principal planes at peripheral regions of the magnetic insulating substrate, and electrically connected to the magnetic insulating substrate via respective through-holes. Wiring is formed on the first principal plane in the central region of the magnetic insulating substrate and connected to a capacitor. One end of the wiring is connected to one of the electrode electrodes, and an insulator layer is provided between the wiring and the coil.