Abstract: Provided is a nonaqueous electrolyte battery separator including a porous film (I) containing a polyolefin resin; and a porous layer (II) containing an inorganic filler, a water-soluble polymer having a structure represented by the following general formula (1), a water-insoluble polymer and a basic compound. The nonaqueous electrolyte battery separator is excellent in shape stability under a high temperature condition of 160 to 200° C.

Abstract: Provided is a nonaqueous electrolyte battery separator including a porous film (I) containing a polyolefin resin; and a porous layer (II) containing an inorganic filler, a water-soluble polymer having a structure represented by the following general formula (1), a water-insoluble polymer and a basic compound. The nonaqueous electrolyte battery separator is excellent in shape stability under a high temperature condition of 160 to 200° C.

Abstract: A gas sensor includes a metal shell, a gas sensor element held in the metal shell, a metal portion arranged between a flange portion of the gas sensor element and a seat portion of the metal shell and a porous thermal spray layer formed on the gas sensor element. When viewed in cross section along the direction of an axis of the gas sensor, a corner of the metal portion axially overlaps in position with or radially outwardly protrudes from an outer surface of a part of the thermal spray layer located on a side surface of the flange portion and is brought into contact with the seat portion. A rear end-facing surface of the metal portion is brought into contact with an outer surface of the thermal spray layer at a position radially inside the side surface of the flange portion.

Abstract: A gas sensor includes a metal shell, a gas sensor element held in the metal shell, a metal portion arranged between a flange portion of the gas sensor element and a seat portion of the metal shell and a porous thermal spray layer formed on the gas sensor element. When viewed in cross section along the direction of an axis of the gas sensor, a corner of the metal portion axially overlaps in position with or radially outwardly protrudes from an outer surface of a part of the thermal spray layer located on a side surface of the flange portion and is brought into contact with the seat portion. A rear end-facing surface of the metal portion is brought into contact with an outer surface of the thermal spray layer at a position radially inside the side surface of the flange portion.

Abstract: A gas sensor, including a cylindrical outer tube; and a seal member disposed therein, the seal member including: a lead wire insert hole and an atmosphere communication hole. The seal member has a groove extending outwards in a radial direction at a rear end-facing surface from the atmosphere communication hole while circumventing the lead wire insert hole, the groove having a cutout toward the front end of the seal member. The gas sensor further includes: a protection portion which covers the atmosphere communication hole; and an arm couples the protection portion and the outer tube, and extends in the radial direction, the arm being at least partially disposed in the groove of the seal member. and the arm is disposed so as to define a gap with the bottom surface of the groove.

Abstract: A gas sensor, including a cylindrical outer tube; and a seal member disposed therein, the seal member including: a lead wire insert hole and an atmosphere communication hole. The seal member has a groove extending outwards in a radial direction at a rear end-facing surface from the atmosphere communication hole while circumventing the lead wire insert hole, the groove having a cutout toward the front end of the seal member. The gas sensor further includes: a protection portion which covers the atmosphere communication hole; and an arm couples the protection portion and the outer tube, and extends in the radial direction, the arm being at least partially disposed in the groove of the seal member. and the arm is disposed so as to define a gap with the bottom surface of the groove.

Abstract: An electrophoresis medium membrane comprises a planar support, a planar cover sheet, and a layer of an electrophoresis gel medium provided between the planar support and the planar cover sheet. The electrophoresis gel medium contains an aqueous polyacrylamide gel, which is prepared by cross-linking polymerization of an acrylamide compound and a cross-linking agent in the presence of water and a compound having at least one carbamoyl group as a denaturing agent (or modifier). The layer of the electrophoresis gel medium has both a predetermined gradual change (gradient) in layer thickness and a predetermined gradual change (gradient) in concentrations of the acrylamide compound and the cross-linking agent.

Abstract: A means for electrophoresis suitably employable for analysis of biopolymers such as proteins, as well as for determination of base sequence of DNA, RNA, their fragments, and their derivatives is disclosed. The means comprises a membrane of an aqueous polyacrylamide gel for electrophoresis which is sandwiched between a plane support and a plane covering sheet. The membrane has a thickness gradient in its electrophoresis direction.

Abstract: A method of making an electrophoresis medium having a predetermined gradient in concentrations of an acrylamide compound and a cross-linking agent comprises the steps of mixing two kinds of aqueous solutions containing the acrylamide compound and the cross-linking agent in different concentrations such that a mixing ratio of the aqueous solutions to each other is changed gradually, thereby to form a predetermined gradual change (gradient) in concentrations of the acrylamide compound and the cross-linking agent in the mixture, and carrying out cross-linking polymerization of the mixture in the presence of a polymerization initiator. Viscosity values of the two kinds of the aqueous solutions containing the acrylamide compound and the cross-linking agent in different concentrations prior to the mixing are adjusted to be substantially equal to each other.

Abstract: In a medium for electrophoresis suitably employable for determination of base sequence of DNA, RNA, their fragments, and their derivatives, which comprises an aqueous polyacrylamide gel formed by crosslinking polymerization of an acrylamide compound and a crosslinking agent in the presence of water and at least one compound having a carbamoyl group, the improvement wherein glycerol is contained in the medium in a small amount ranging from 0.1 to 1.0 wt/v %.