Abstract: A synthetic resin intake manifold body and a synthetic resin passage structural member are respectively provided with a body side joining flange and a structural member side joining flange that are continuously formed along a joining line. A protrusion is provided on the body side joining flange and a welding protrusion and an inside and an outside control wall are provided on the structural member side joining flange. When the synthetic resin passage structural member is positioned and aligned with respect to the synthetic resin intake manifold body along the joining line prior to welding, a volume of an inside burr retaining groove is set to be larger than a volume of an outside burr retaining groove.

Abstract: A semiconductor wafer cleaning method has steps of cleaning a surface of a semiconductor wafer with a cleaning solution that has an etching function; and cleaning the surface of the semiconductor wafer with a high-purity organic solvent while circulating the high-purity organic solvent so as to remove Ca and Mg on the surface of the semiconductor wafer.

Abstract: A synthetic resin intake manifold body and a synthetic resin passage structural member are respectively provided with a body side joining flange and a structural member side joining flange that are continuously formed along a joining line. A protrusion is provided on the body side joining flange and a welding protrusion and an inside and an outside control wall are provided on the structural member side joining flange. When the synthetic resin passage structural member is positioned and aligned with respect to the synthetic resin intake manifold body along the joining line prior to welding, a volume of an inside burr retaining groove is set to be larger than a volume of an outside burr retaining groove.

Abstract: Abrasive grains have mainly grains with a roundness of 0.50 or more and 0.75 or less, where the roundness is defined as the ratio of the circumference of a circle having the same area as that of a grain to the perimeter of that grain. An abrasive has the abrasive grains and at least one of an oxidizer, an oxide solution, an abrasive grain dispersion agent and a basic compound. An abrasive solution has the abrasive grains and water or hydrophilic substance.

Abstract: A soundproof cover includes a sealing layer, a sound insulation layer, and a vibration inhibition layer. The sound insulation layer has a peripheral portion, is to be disposed so as to contact at least the peripheral portion with a noise source, and exhibits elasticity. The sound insulation layer is formed as a hard plate shape, has an installation portion to be fastened to the noise source, and is disposed so as to cover the sealing layer. The vibration inhibition layer is disposed on at least a part of an interface between the sealing layer and the sound insulation layer so as to adhere to the sound insulation layer, and inhibits the sound insulation layer from vibrating.

Abstract: A soundproof cover includes a sealing layer, a sound insulation layer, and a vibration inhibition layer. The sound insulation layer has a peripheral portion, is to be disposed so as to contact at least the peripheral portion with a noise source, and exhibits elasticity. The sound insulation layer is formed as a hard plate shape, has an installation portion to be fastened to the noise source, and is disposed so as to cover the sealing layer. The vibration inhibition layer is disposed on at least a part of an interface between the sealing layer and the sound insulation layer so as to adhere to the sound insulation layer, and inhibits the sound insulation layer from vibrating.

Abstract: A throttle valve (12) is provided in an intake air passage (11) of a throttle body (10) and serves to control the air flows rate that is supplied into a combustion chamber of an internal combustion engine. A valve housing (21) is joined to the throttle body (10). A communication passage (22) is formed in the valve housing (21). A branching side passage (13a) and a joining side passage (13b) are formed in the throttle body 10 and, together with the communication passage (22) in the valve housing (21), form a bypass structure (13) that bypass the throttle valve (12). A valve seat portion (23) is formed on the valve housing (21) in the communication passage (22). A valve (25) is provided in the valve housing (21) and serves to control the opening area of the valve seat portion (23). A lattice (50) is disposed downstream of the valve seat portion (23) in the bypass structure (13).

Abstract: In a conventional cash or credit card, since the magnetization angle between the magnetic head and the recording medium formed on the card is fixed, data recorded on the card can easily be discriminated or copied through a card reader for allowing dishonest use of the card. To overcome these problems, data are written or read on or from the card on the basis of a head motion pattern code recorded at the head area of the recording medium. In operation, the read/write head is moved relative to a moving card in accordance with a head motion signal corresponding to a recorded head motion pattern code so that the magnetization angle between the head and the recording medium is intermittently varied in both data recording and reproducing operations.