Abstract: A connection structure includes a proximal end of a needle body, a metallic connector fixed to the proximal end, and an end of a flexible cable attached to the connector. The connector includes a shaft and a head diametrically greater than the shaft. The proximal end of the needle body has a hole into which the shaft of the connector is fitted. The head of the connector has a cable recess accommodating the end of the cable. The cable recess includes a first recess adjacent to an opening of the cable recess and a second recess adjacent to and diametrically greater than the first recess. The end of the cable includes a first portion accommodated in the first recess and a second portion connected to the first portion and accommodated in the second recess. The second portion is diametrically greater than the first portion.

Abstract: A polyester resin composition is excellent in heat resistance and hydrolysis resistance and results in a small amount of a gel composition and linear oligomers generated during a melt-molding step and a processing step. The polyester resin composition satisfies formulas (I) to (IV): the amount of generated linear oligomers<900 ppm??(I) ?COOH/COOH?2.0??(II) 5 ppm?Mn content?40 ppm??(III) 4 ppm?Na content?40 ppm??(IV).

Abstract: A polyester resin composition is excellent in heat resistance and hydrolysis resistance and results in a small amount of a gel composition and linear oligomers generated during a melt-molding step and a processing step. The polyester resin composition satisfies formulas (I) to (IV): the amount of generated linear oligomers<900 ppm??(I) ?COOH/COOH?2.0??(II) 5 ppm?Mn content?40 ppm??(III) 4 ppm?Na content?40 ppm??(IV).

Abstract: A polyester resin composition including an ionic liquid that can dissolve an acid component monomer and/or oligomers of a polyester terephthalate, and a copper element that exhibits a reduced amount of production of the acid component monomer and/or oligomers of the polyester. Examples of the ionic liquid include 1-butyl-3-methylimidazolium acetate, 1-butyl-3-methylimidazolium chloride and tetrabutyl ammonium bromide. In one polyester resin composition, the surface roughness Ra of a capture plate is less than 0.150 ?m, as measured when a sample of the polyester resin composition is melt at 300° C. for 60 minutes under a nitrogen atmosphere, quickly cooled and thermally treated at 220° C. for 8 hours to form scattered products which are then attached to the capture plate and a gelation ratio after a 6-hour melting treatment at 300° C. under an atmosphere with an oxygen concentration of 1% is 5% or less.

Abstract: A connection structure includes a proximal end of a needle body, a metallic connector fixed to the proximal end, and an end of a flexible cable attached to the connector. The connector includes a shaft and a head diametrically greater than the shaft. The proximal end of the needle body has a hole into which the shaft of the connector is fitted. The head of the connector has a cable recess accommodating the end of the cable. The cable recess includes a first recess adjacent to an opening of the cable recess and a second recess adjacent to and diametrically greater than the first recess. The end of the cable includes a first portion accommodated in the first recess and a second portion connected to the first portion and accommodated in the second recess. The second portion is diametrically greater than the first portion.

Abstract: A polyester resin composition exhibits a reduced amount of production of the acid component monomer and/or oligomers of the polyester. In one polyester resin composition, the surface roughness Ra of a capture plate is less than 0.150 ?m, as measured when a sample of the polyester resin composition is melt at 300° C. for 60 minutes under a nitrogen atmosphere, quickly cooled and thermally treated at 220° C. for 8 hours to form scattered products which are then attached to the capture plate. In another polyester resin composition, the production rate of an acid component monomer and/or the production rate of oligomers is/are less than 0.70, as defined by formulas (I) and (II): Production rate of acid component monomer=(amount of produced acid component monomer)/(acid component monomer content)??(I) Production rate of oligomers=(amount of produced oligomers)/(oligomer content)??(II).

Abstract: A process of producing a polyester composition includes carrying out an esterification reaction of a dicarboxylic acid component with a diol component, and then carrying out a polycondensation reaction, wherein the diol component is added twice or more during a time from completion of the esterification reaction until beginning the polycondensation reaction, and alkali metal phosphate is added with an amount of COOH terminal groups of an esterification reactant being not more than 150 eq/ton.

Abstract: A process of producing a polyester composition includes carrying out an esterification reaction of a dicarboxylic acid component with a diol component, and then carrying out a polycondensation reaction, wherein the diol component is added twice or more during a time from completion of the esterification reaction until beginning the polycondensation reaction, and alkali metal phosphate is added with an amount of COOH terminal groups of an esterification reactant being not more than 150 eq/ton.

Abstract: A high-accuracy current detecting resistor is provided whose resistance does not change greatly according to temperature change and which has an excellent dielectric strength. In a resistor in which an electrical resistance alloy plate and a radiating metallic plate are laminated via a resin insulating layer, the electrical resistance alloy plate is formed of an alloy containing nickel and copper and is adhered to the resin insulating layer by etching a grain boundary of the alloy in the form of a concave.

Abstract: A high-accuracy current detecting resistor is provided whose resistance does not change greatly according to temperature change and which has an excellent dielectric strength. In a resistor in which an electrical resistance alloy plate and a radiating metallic plate are laminated via a resin insulating layer, the electrical resistance alloy plate is formed of an alloy containing nickel and copper and is adhered to the resin insulating layer by etching a grain boundary of the alloy in the form of a concave.