Abstract: Herein discloses is a testing device, comprising therein an inlet port introducing a blood specimen thereinto, a blood separating chamber held in fluid communication with the inlet port through a fluid passageway to receive a blood specimen, and a hemolyzed blood chamber having accommodated therein a hemolyzed blood fluid. The testing device is operative to be rotated around a rotation center and stop from being rotated to have the blood specimen accommodated in the blood separating chamber into blood cells and a blood plasma fluid, and the blood separating chamber is held in fluid communication with the passageway merging area through a fluid passageway to have the blood plasma fluid separated from the blood specimen flowed through the fluid passageway, in such a manner that the hemolyzed blood fluid is mixed and diluted with the blood plasma fluid in the passageway merging area at a predetermined dilution ratio.

Abstract: An Sn—Zn lead-free solder alloy according to the present invention is constructed in a manner such that it is an Sn-based solder alloy indispensably containing 6 to 10 wt % zinc at least and further containing 0.0015 to 0.03 wt % magnesium and 0.0010 to 0.006 wt % aluminum. Upon preservation of solder paste not only under refrigeration but also at a room temperature or higher, the inside of solder particle is protected by the protective magnesium/aluminum oxide film formed on the solder particle surface, and a reaction between zinc and an activator is suppressed, so that preservation stability is improved, and at the elevated temperature during soldering, the solder alloy enters a state where said protective oxide film is easily destroyed, so that good wettability is held.

Abstract: In a method of producing a glass substrate for a magnetic disk, a principal surface of a glass substrate is subjected to polishing in order to impart a texture thereon. Thereafter, a treating liquid is supplied onto the principal surface of the glass substrate. While a tape is pressed against the principal surface of the glass substrate, the principal surface is cleaned.

Abstract: In a magnetic recording medium including a substrate (1) having a principal surface on which first and second magnetic layers (5 and 7) and a spacer layer (6) are at least formed, each of the first and the second magnetic layers being of a ferromagnetic material, the spacer layer being formed between the first and the second magnetic layers for inducing antiferromagnetic exchange interaction between the first and the second magnetic layers, the principal surface of the substrate is provided with concentric textures to have a predetermined surface roughness so that the spacer layer has a uniform thickness. The first magnetic layer is for controlling the antiferromagnetic exchange interaction.

Abstract: An Sn—Zn lead-free solder alloy according to the present invention is constructed in a manner such that it is an Sn-based solder alloy indispensably containing 6 to 10 wt % zinc at least, and further containing 0.0015 to 0.1 wt % magnesium, said magnesium content being effective quantity for forming a protective magnesium oxide film on the solder surface and also for destroying said oxide film during soldering. When solder paste is preserved, the inside of solder particle is protected by the protective magnesium oxide film formed on the surface of solder particle, and a reaction between zinc and an activator is suppressed, so that preservation stability is improved, and at elevated temperature during soldering, a state where said protective oxide film is easily destroyed is obtained, so that good wettability is held.

Abstract: An Sn—Zn lead-free solder alloy according to the present invention is constructed in a manner such that it is an Sn-based solder alloy indispensably containing 6 to 10 wt% zinc at least and further containing 0.0015 to 0.03 wt% magnesium and 0.0010 to 0.006 wt% aluminum. Upon preservation of solder paste not only under refrigeration but also at a room temperature or higher, the inside of solder particle is protected by the protective magnesium/aluminum oxide film formed on the solder particle surface, and a reaction between zinc and an activator is suppressed, so that preservation stability is improved, and at the elevated temperature during soldering, the solder alloy enters a state where said protective oxide film is easily destroyed, so that good wettability is held.

Abstract: In a biosensor having a developing layer for developing a sample solution, including a reagent part immobilized to a portion of the developing layer and a marked reagent part which is held in a dry state by a portion of the developing layer, and is dissolvable by developing the sample solution, and qualitatively or quantitatively analyzing an analyte in the sample solution by measuring the amount of the marker reagent bound to the reagent immobilization part; wherein plural reagent immobilization parts exist, and the respective reagent immobilization parts have different affinities for the analyte in the sample solution or the marker reagent, whereby a prozone phenomenon can be detected. Further, a biosensor with a high precision of measurement, which has a wider dynamic range for the concentration of the analyte in the sample solution, can be provided.

Abstract: In a magnetic recording medium (10) including a glass substrate (1) which has a principal surface and which includes a compressive stress layer (1aa) as a surface layer having the principal surface, and a magnetic layer (4) formed on the principal surface of the glass substrate, compressive stress produced on the principal surface of the glass substrate is equal to 3 kg/mm2 or more. The glass substrate has the principal surface provided with a texture (100) for inducing magnetic anisotropy in the magnetic layer. A distance from the principal surface of the glass substrate to the magnetic layer is equal to 1200 angstroms or less.

Abstract: An object of the present invention is to provide a biosensor which enables a measurement with a small amount of specimen, for which whole blood with a reduced influence of blood cell can be used without previously separating blood plasma components from the blood, in an analysis of a component in the blood.

Abstract: In a magnetic recording medium including a glass substrate (1) having a principal surface on which at least a magnetic layer (4) is formed, the magnetic recording medium has a coercive force of 2500 oersted or more in a circumferential direction thereof. The principal surface of the glass substrate is provided with a texture having a predetermined surface roughness so that the magnetic layer is given circumferential magnetic anisotropy. The magnetic recording medium further includes a magnetic anisotropy inducing layer (2) formed between the glass substrate and the magnetic layer so that the magnetic recording medium has an oriented ratio (OR) of 1.1 or more. The oriented ratio (OR) is defined as a ratio of a magnetic characteristic in circumferential direction to another magnetic characteristic in the radial direction.

Abstract: In a magnetic recording medium including a substrate (1) having a principal surface on which first and second magnetic layers (5 and 7) and a spacer layer (6) are at least formed, each of the first and the second magnetic layers being of a ferromagnetic material, the spacer layer being formed between the first and the second magnetic layers for inducing antiferromagnetic exchange interaction between the first and the second magnetic layers, the principal surface of the substrate is provided with concentric textures to have a predetermined surface roughness so that the spacer layer has a uniform thickness. The first magnetic layer is for controlling the antiferromagnetic exchange interaction.

Abstract: In order to provide a specific binding analysis method capable of quantitatively or qualitatively determining an analyte in a sample in a simple, rapid and accurate manner with little influence of the prozone phenomenon, background and foreign matter, and a specific binding analysis apparatus used therefor, a database relating to a signal intensity attributed to a specific binding reaction is previously prepared for an individual sample containing a suspected analyte, a measurement pattern of a signal intensity of the sample is determined based on the database, and the concentration of the analyte in the sample is further determined.

Abstract: A biosensor according to the present invention includes a reagent immobilization part (5) where an antibody for a measurement target in an inspection target solution is immobilized, and a marked reagent holding part (4) where an antibody which is marked at a part of a development layer in a dry state to be eluted by development of the inspection target solution is held, at parts of the development layer for developing the inspection target solution, and measures a bonding amount of the marked reagent bonded in the reagent immobilization part (5), thereby qualitatively and quantitatively measuring a measurement component in the inspection target solution. In such bionsensor, side faces of the development layer which are parallel to the direction of the inspection target solution permeating are partially or entirely melted and cured to be sealed.

Abstract: The present invention provides an extracorporeal diagnostic used for measurement of a substance to be tested in a specimen. The extracorporeal diagnostic comprises a reagent which specifically binds to the substance to be tested, and a hydrophilic material (a sugar or a sugar derivative). More particularly, the present invention relates to an extracorporeal diagnostic for measuring a substance to be tested in a specimen. The extracorporeal diagnostic comprises 1) a reagent which specifically binds to the substance to be tested and 2) a compound comprising at least one hydroxyl group and at least one aldehyde group or ketone group.

Abstract: In a chromatography measuring device according to the present invention, a region at least from a marker reagent holding part 3 in which a marker reagent is held to a specific protein immobilization part 5 in which a color reaction is seen in a chromatography specimen 1 is adherently covered with a liquid-impermeable sheet material 6 composed of plastic tape or the like, and other regions are not covered but opened, as shown in FIG. 1.

Abstract: In a chromatographic quantitative assay device and a manufacturing method thereof according to the present invention, as shown in FIG. 1, there are provided a non-moistenable reaction layer carrier support 1, a sample addition portion 2 for adding a liquid sample, a marker reagent holding portion 3 for holding a marker reagent, a antibody fixing portion 5 where specific protein is fixed on the region of a reaction layer 4, and a absorption portion 6 for absorbing the liquid sample. These portions are formed above the carrier support 1, and the reaction layer carrier support 1 is covered by close adhesion with the liquid-impermeable sheet member 7 except the portion for adding a liquid sample.

Abstract: A bio-device includes a sample application section; an indicator substance holding section; and a determination section. The sample application section, the indicator substance holding section, and the determination section are located so that a liquid sample applied to the sample application section is transferred to the determination section via the indicator substance holding section. At least the indicator substance holding section and the determination section are included in a single member. The indicator substance holding section has a first substance group containing a substance specifically reacting with a target substance, wherein the first substance group is held so as to be capable of being eluted by the applied liquid sample. After the first substance group is eluted by the liquid sample applied to the sample application section, the first substance group flows as a mass having a leading end and a trailing end during flowing.

Abstract: As shown in FIG. 1, a biosensor according to the present invention is provided with an area in which a reagent having bleaching action is carried in a state where it can be dissolved, at least in a part of a sample application area to which an inspection target solution is applied or the downstream of the sample application area in the direction of the inspection target solution permeating, in a development layer.

Abstract: A chromatography specimen 10 according to the present invention has a sample application part 2 to which a liquid sample is applied; a marker hold region 3 which holds a marker reagent; a reactive layer 4 where a binding reaction between the marker reagent and an analysis target is processed; a specific protein immobilization part 5 in which a specific protein is held in the area of the reactive layer 4; and a water-absorbing part 6 for absorbing a sample, and the reactive layer 4 is impregnated with a surface active agent dissolved solution having such a property that it can be solidified when dried and thereafter subjected to a drying processing.

Abstract: A substantial amount of a marker reagent associated with measurement is measured in an marker reagent measurement area 6, and the substantial amount of the marker reagent is reflected by a result obtained in an reaction result measurement area 7 where a reaction with a measurement target in an inspection target solution is measured.