Abstract: A magnetic disk apparatus has: a head (2) that performs data recording and playback while moving relative to a magnetic disk (26) rotating at the prescribed speed; an actuator (3) that positions said head relative to said magnetic disk (26); and a controller (4) that detects the position of said head by means of servo sector that have positioning information recorded magnetically on said magnetic disk (1) and performs control to position said actuator (3) by means of this detection signal, wherein said magnetic disk (1) has at least a part in which the arrangement of tracks is spiral. The magnetic patterns on the disk include a servo sector and a data sector both formed on the same spiral track. The servo sector includes burst patterns for servo control.

Abstract: A medical composition containing, as an active constituent, a nitroetheneamine derivative represented by the formula (I): wherein the substituents are as defined in the disclosure, its stereoisomers, its tautomers or a salt thereof.

Abstract: A high-level region and a low-level region are formed on a surface of a nonmagnetic base member, in which high-level region is formed a ferromagnetic thin film pattern which corresponds to a preformat information signal, in such a structure that a flow promoting shape of such a shape (e.g., smooth curved shape, polygonal shape) that inhibits the stagnation of a flow of a detergent to promote the flow in order to prevents sticking and residing of foreign matter contained in the detergent is formed at an area where the detergent is liable to stagnate in the high-level region, i.e. at an inner radial portion of a disk-shaped mater information carrier.

Abstract: A piezoelectric sensor device has a piezoelectric body vibrator consisting of the piezoelectric body which is sandwiched by a pair of electrodes, a power source which applies a voltage to the piezoelectric body vibrator so as to get excited for vibration, means for monitoring electric constants to detect changes in electric constants accompanied by vibration of the piezoelectric body. The change in electric constants in the piezoelectric body is detected as a change in frequency for vibration of the piezoelectric body corresponding to an electric constant under the determined conditions. The piezoelectric sensor device has a means to obtain the frequency value from frequencies at not less than two points giving a determined electric constant. According to the piezoelectric sensor device the dispersion in measured values due to change in vibration aptness of vibration system and the polarization state of piezoelectric body vibrator can be made smaller.

Abstract: A piezoelectric sensor device has a piezoelectric body vibrator consisting of the piezoelectric body which is sandwiched by a pair of electrodes, a power source which applies a voltage to the piezoelectric body vibrator so as to get excited for vibration, means for monitoring electric constants to detect changes in electric constants accompanied by vibration of the piezoelectric body. The change in electric constants in the piezoelectric body is detected as a change in frequency for vibration of the piezoelectric body corresponding to an electric constant under the determined conditions. The piezoelectric sensor device has a means to obtain the frequency value from frequencies at not less than two points giving a determined electric constant. According to the piezoelectric sensor device the dispersion in measured values due to change in vibration aptness of vibration system and the polarization state of piezoelectric body vibrator can be made smaller.

Abstract: A method of inspecting a crack in a ceramic substrate that is not exposed on the surface. The method can detect all cracks and make objective judgement possible by expressing the inspection result as numerical data. Conductors are disposed on both faces of a ceramic substrate, wherein one of the conductors is a conductive liquid; the insulation resistance value or an electric property dependent on the insulation resistance is measured with the conductive liquid or other conductors electrically connected to the conductive liquid which are used as electrodes.

Abstract: A diaphragm structure includes a ceramic substrate having at least one window portion and a thin diaphragm laminated onto the ceramic substrate so as to cover the window portion, wherein only a part of an interface between the ceramic substrate and the thin diaphragm is joined to form a joint of the diaphragm. A diaphragm structure is free from instability caused by a breakage or deformation of a partition wall between window portions upon punching or laminating even if a diaphragm structure employs a design in which dimensions of a diaphragm portion is maintained and simultaneously a distance between diaphragm portions is made narrow to restrain a surface area excluding a diaphragm portion of a diaphragm structure or a design in which a plurality of diaphragm portion having various configurations and dimensions are disposed.

Abstract: A polypeptide which is a tumor necrosis factor polypeptide having an amino acid sequence represented by from the 1st Ser to the 155th Leu as shown by SEQ ID NO:1 in the Sequence Listing, or its mutein, wherein the amino acid sequence of the 1st Ser to the 8th Asp of the SEQ ID NO:1 or the corresponding amino acid sequence of the mutein is replaced by an amino acid sequence containing at least one amino acid sequence of Arg-Gly-Asp and from 3 to 16 amino acids. Also disclosed are a recombinant plasmid containing a DNA encoding such a polypeptide, a recombinant microbial cell transformed by such a recombinant plasmid, a process for producing the polypeptide, a pharmaceutical composition comprising the polypeptide as an active ingredient, and a DNA for the polypeptide.

Abstract: A polypeptide which is a tumor necrosis factor polypeptide having an amino acid sequence represented by from the 1st Ser to the 155th Leu as shown by SEQ ID NO:1 in the Sequence Listing, or its mutein, wherein the amino acid sequence of the 1st Ser to the 8th Asp of the SEQ ID NO:1 or the corresponding amino acid sequence of the mutein is replaced by an amino acid sequence containing at least one amino acid sequence of cell-adherent peptide of laminin and from 5 to 30 amino acids. Also disclosed are a recombinant plasmid containing a DNA encoding such a polypeptide, a recombinant microbial cell transformed by such a recombinant plasmid, a process for producing the polypeptide, a pharmaceutical composition comprising the polypeptide as an active ingredient, and a DNA for the polypeptide.

Abstract: Disclosed is an intramedullary nail used to unite the separated fragments of a fractured long bone. It has a C-shaped bar-like appearance having a flat front section seen from the direction of insertion as well as a connecting part and, if necessary, a slit in its distal portion. The flat section prevents the rotation of the nail and supports load; the connecting part is used to extract the nail out from the medullary canal; and a stopper for prevention of the rotation is attached to the slit. Such a nail exhibits a stable fixing effect.