Abstract: The present invention simply, rapidly and accurately detects, quantitatively determines and types genes of protein groups [which refer to TDH (Thermostable direct hemolysin), TRH (TDH-related hemolysin) and other analogous hemolysin proteins, hereinafter referred to as TDH-related toxins] of thermostable hemolysin groups produced by pathogenic bacteria of the genus Vibrio. Present Invention provides a method which enables detection and quantitative determination of actual TDH-related toxin-producing bacteria, which are important in food hygiene control. Using a primer pair which contains gene sequences encoding common amino acid sequences of TDH and TRH, TDH-related toxin genes are comprehensively detected and determined, thereby TDH-related toxin-producing bacteria themselves are detected and quantitative determined.

Abstract: To prepare high-performance specific gene-amplification primers for detecting, quantitatively determining or identifying Vibrio parahaeinolyticus having low possibility of mis-identification and practically sufficient amplification efficiency and amplification specificity.

Abstract: The present invention has an object of providing a process for improving the efficiency of a DNA amplification reaction, and a process for improving the hybridization specificity of an oligonucleotide to a DNA.

Abstract: An optical fiber band for decoration is formed of a plurality of optical fibers woven obliquely in a band shape. The band forms a mesh pattern, where each of the optical fibers changes positions above or below at least every two other fibers in a longitudinal direction of the fiber.

Abstract: An optical fiber band for decoration is formed of a plurality of optical fibers woven obliquely in a band shape. The band forms a mesh pattern, where each of the optical fibers changes positions above or below at least every two other fibers in a longitudinal direction of the fiber.

Abstract: An over-writable magneto-optical recording medium in which a recording section has at least a first dielectric layer, a first recording layer, a second recording layer, and a second dielectric layer formed sequentially and a reflective layer and a protective layer formed on the recording section. A groove is formed on the transparent substrate along a recording track, both sidewalls of the groove are formed into an independent wobbling shape, a relationship of 0.470 ≦W/Ø≦0.610 is effectuated where the width of the groove as W, and a relationship of 0.120≦D(&lgr;/n)≦0.142 is effectuated where the depth of the groove as D, and the angle Ø between wall faces of the groove is 150°±10. a relationship of 0.55≦(d2/d1)≦0.9 is effectuated when assuming the thickness of the first dielectric is d1 and the reflective layer is d2.

Abstract: A recording medium cartridge housing a disc wherein the vibration of the disc can be reduced by printing a vibration isolating ink layer containing acrylic particles and having a projecting and depressing surface on a portion including at least a support area of an upper half of the cartridge housing. The isolating ink layer acts by absorbing the vibration transmitted to the cartridge housing.

Abstract: An over-writable magneto-optical recording medium in which a recording section has at least a first dielectric layer, a first recording layer, a second recording layer, and a second dielectric layer formed sequentially and a reflective layer and a protective layer formed on the recording section. A groove is formed on the transparent substrate along a recording track, both sidewalls of the groove are respectively formed into an independent wobbling shape, a relationship of 0.470≦W/Ø≦0.610 is effectuated when assuming the width of the groove as W, and a relationship of 0.120≦D(&lgr;/n)≦0.142 is effectuated when assuming the depth of the groove as D, and the angle ⊖ between wall faces of the groove is kept at 150°±10°.

Abstract: A magnetic recording medium which is capable of improving durability and reliability while satisfactory electromagnetic conversion characteristics are being maintained, the magnetic recording medium incorporating a non-magnetic support member; and a magnetic layer formed on the non-magnetic support member and mainly composed of magnetic powder and a binder and having a two-layer structure composed of a first magnetic layer and a second magnetic layer, wherein Young's modulus of the first magnetic layer is 140×105 N/m2 to 160×105 N/m2 and Young's modulus of the second magnetic layer is 45×105 N/m2 to 50×105 N/m2. The specific surface area of the magnetic powder for use in the first magnetic layer is 42 m2/g to 46 m2/g and the specific surface area of the magnetic powder for use in the second magnetic layer is 32 m2/g to 35 m2/g.

Abstract: This invention intends to offer a magnetic recording medium which is so devised as to give a wide dynamic range and a flat response over whole audible frequencies.This invention attains the object by providing a magnetic recording medium which has two magnetic layers each composed mainly of ferromagnetic powder and a binder spread one over the other on one surface (front surface) of a non-magnetic substrate, wherein the ferromagnetic powder of either magnetic layer has a coercive force of 54.0-59.0 kA/m, and the coercive forces of the two magnetic layers differ by 3.2 kA/m or less. In addition, if a phase shift has to be minimized, the frictional coefficient of the back surface, and roughness (Ra.sup.f) of the magnetic surface with respect to that (Ra.sup.b) of the back surface or Ra.sup.f /Ra.sup.b should be adjusted properly.

Abstract: A magnetic recording medium exhibiting not only good durability and traveling reliability but also improved static magnetic properties and electromagnetic transduction characteristics can be obtained according to the present invention. The magnetic recording medium includes a non-magnetic substrate and a magnetic layer composed of a magnetic powder, a binder and a lubricant, wherein the binder contains not less than 50% by weight of a polyester-polyurethane resin having a number-average molecular weight (Mn) of not greater than 15,000 and a ratio of a weight-average molecular weight (Mw) to the number-average molecular weight (Mn) of not smaller than 2.5.

Abstract: A magnetic recording medium exhibiting not only good durability and traveling reliability but also improved static magnetic properties and electromagnetic transduction characteristics can be obtained according to the present invention. The magnetic recording medium includes a non-magnetic substrate and a magnetic layer composed of a magnetic powder, a binder and a lubricant, wherein the binder contains not less than 50% by weight of a polyester-polyurethane resin having a number-average molecular weight (Mn) of not greater than 15,000 and a ratio of a weight-average molecular weight (Mw) to the number-average molecular weight (Mn) of not smaller than 2.5.