Abstract: When a flexible printed circuit is not connected to a connector pin of a hard disk contained in a notebook PC, and a substrate face of the hard disk faces a ground side (horizontal coupling plate side), substantially the entire substrate face of the hard disk is covered with a ?-shaped shielding material.

Abstract: A printed-circuit board includes a shield pattern layer that is stacked on a surface layer with respect to at least one wiring pattern layer that includes a wide-pattern area having a wiring width of more than 1 millimeter. Moreover, the shield pattern layer includes a shield pattern that is, from a plane view, overlapped on the wide-pattern area, and grounded without being electrically connected to an internal layer of other wiring pattern layers.

Abstract: An analytic frequency determination unit determines the range of an analytic frequency used in a moment method as a range nearest to the lowest value of the analytic frequency in the frequencies whose real parts of frequency responses are 0. A transient analysis unit obtains an impulse response as a transient analysis corresponding an analytic frequency in the determined range.

Abstract: Disclosed is a method of manufacturing briquettes of reduced iron, wherein a residual oil on distillation containing petroleum asphalt or petroleum pitch is sprayed on the surfaces of rolls. The petroleum asphalt or petroleum pitch are thermally cracked into hydrocarbon gas and carbon by the heat (650.degree. to 750.degree. C.) of the reduced ion. This makes it possible to prevent briquettes from sticking on roll pockets, and hence to provide stable operation of the briquette manufacturing apparatus.

Abstract: In an electromagnetic flowmeter using a ceramic pipe as a measuring pipe, an electrode inserted in the ceramic pipe includes a ceramic core rod and a conductive portion of a refractory metal. The conductive portion covers a fluid contact end face of the core rod and extends along the longitudinal direction of the core rod. The other end of the conductive portion faces an outer surface of the ceramic pipe, and is opposite the fluid contact end face.

Abstract: An electromagnetic flowmeter includes a metal case and a ceramic measuring pipe with a pair of coils and a pair of electrodes. The ceramic measuring pipe is a straight pipe or a pipe with flanges. The ceramic measuring pipe is detachably mounted in the metal case directly or through metal rings. O-rings are fluid-tightly mounted in flanges of the ceramic measuring pipe or the metal rings, respectively. A ground rod extends through a hole in the wall of the measuring pipe. One end of the ground rod is in contact with the conductive fluid and the other end thereof is electrically connected to the case through a screw or banana jack.

Abstract: The invention provides a method for improving the nature of soil in a salty land not suitable for agriculture by forming a moisture barrier in the soil with formation of a water-impermeable layer of soil underground. The method comprises sprinkling a water-soluble polymer, e.g. a copolymer of acrylic acid, or polymer blend including, for example, polyacrylic acid, capable of being insolubilized by interacting with the salt, preferably, in an aqueous solution over the salty land so that a water-impermeable layer underground is formed by the insolubilized polymer together with the soil particles.

Abstract: An electromagnetic flowmeter uses a cylindrical inner tube including an electrode, an excitation coil and an inner portion of an electrical connector with the inner portion being located on an outer circumferential surface of the tube and electrically connected to the electrode and the coil, an outer tube housing the inner tube along its axis and having an access opening extending transversely through the outer tube housing and an electrical connector support externally inserted through the access opening for supporting an outer portion of the electrical connector to selectively mate with the first portion of the connector to provide separate electrically conductive paths through the connector for connections to the electrode and the excitation coil.

Abstract: An apparatus for pickling the inner wall of a tubular member, for example, a zirconium or zircaloy tubular member as a cladding tube for nuclear fuel. The apparatus features the use of ultrasonic instruments for measuring the inner diameter of the tubular member while pickling the inner wall of the same. Owing to the interlocked association of the instruments and mechanism for supplying a pickling liquid into the tubular member, the supply of the pickling liquid can be stopped as soon as the inner diameter has reached a predetermined value. Various mechanisms may also be incorporated in the apparatus to minimize the temperature variation along the length of the tubular member and to improve the accuracy of the measurement by the instruments.

Abstract: A cleaning apparatus for use in pickling facilities for tubular members such as zirconium or zirconium alloy tubes. The apparatus includes a travelling crane for conveying and loading the tubular members from one cleaning tank to another, a pair of endless wrapping connectors such as endless chains spacedly and circulatably provided in at least one tank, for example, in a first cleaning tank filled with slightly warm water below the level of its cleaning fluid, and a plurality of feed claws provided with an interval therebetween on each of the endless wrapping connectors along the length of the same so as to prevent the tubular members from contacting one another during cleaning treatment. Thus, development of stain or physical damage such as scratches or dents is eliminated or minimized. It is possible to tentatively stock the tubular members on the endless wrapping connectors so as to perform a smooth and continuous pickling and cleaning operation of such tubular members.

Abstract: An apparatus for conveying tubular members along a plurality of treatment liquid tanks in pickling facilities. The apparatus includes a pair of guide rails and a travelling car adapted to reciprocate on the guide rails. The travelling car includes at least one pair of tube-supporting hooks which can be reciprocated upwardly and downwardly and turned between positions parallel to the rails and other positions perpendicular to the rails. The tube-supporting hooks can be lowered or raised independently so as to support the tubular members aslant near the treatment liquid level in each of the treatment liquid tanks, thereby allowing immersion of the tubular members into the treatment liquid or retraction of the tubular members out of the treatment liquid without forming considerable air bubbles in the liquid. Since such bubbles are known to develop stains on the tubular members, tubular members of high surface quality can be obtained.

Abstract: An apparatus for continuously pickling the outer surfaces of hermetically plugged tubular members is described. The apparatus includes a plurality of liquid tanks which separately contain different pickling liquids and define through-holes in their respective front and rear walls on at least one common longitudinal line to permit the successive passage of the tubular members therethrough while rotating them around their respective longitudinal axes. The apparatus includes a cleaning tank and cleaning brush unit provided sequentially before the liquid tanks. The cleaning tank includes at least one ultrasonic cleaning oscillator and defines through-holes in the front and rear walls thereof for allowing said tubular members to pass through the cleaning tank and the brush unit. Since any oil, grease or dust can be completely removed by the cleaning tank and brush unit prior to pickling, it is possible to obtain tubular members having excellent outer surface quality.

Abstract: The invention provides a novel method for the preparation of a lower alkyl, e.g. methyl, ester of fatty acid by the alcoholysis reaction of fatty acid glyceride, i.e. naturally occurring oils or fats, with a lower alcohol, according to which high-quality products containing very small amounts of colored or coloring impurities are readily obtained without the necessity of troublesome procedure or expensive apparatus as in the conventional methods. The inventive method is in principle a two-step alcoholysis reaction and the product obtained in the first step is separated from the by-product glycerine and then subjected to the second alcoholysis reaction followed by admixing of an appropriate amount of water and phase separation so that the undesirable impurities transfer into the aqueous layer and readily separated from the ester product.