Abstract: The present invention provides a nitrogen analyzing apparatus comprising: a nitrogen concentration measuring device configured to measure the concentration of an nitrogen impurities in a mixed gas including argon and oxygen as main components on the basis of emission intensity of a light emitted from the nitrogen impurities by an electric discharge in a discharge tube and an oxygen concentration of a sample gas introduced into the discharge tube, and a diluting oxygen-introducing device configured to add a diluting oxygen in the sample gas sampled from the mixed gas according to the oxygen concentration of the mixed gas.

Abstract: The present invention provides a nitrogen analyzing apparatus comprising: a nitrogen concentration measuring device configured to measure the concentration of an nitrogen impurities in a mixed gas including argon and oxygen as main components on the basis of emission intensity of a light emitted from the nitrogen impurities by an electric discharge in a discharge tube and an oxygen concentration of a sample gas introduced into the discharge tube, and a diluting oxygen-introducing device configured to add a diluting oxygen in the sample gas sampled from the mixed gas according to the oxygen concentration of the mixed gas.

Abstract: A heat insulating container is described, including an outer glass container and an inner glass container housed therein with a gap formed in-between as a heat insulating layer. A radiant heat preventive film containing a metal oxide is disposed on at least one of the external surface of the inner container or the internal surface of the outer container, wherein the radiant heat preventive film has a reflectivity of 35% or higher with a wavelength of 15 ?m. When the thickness of the radiant heat preventive film is 3000 ?, the Hall mobility “x” (cm2/V·s) and the carrier concentration “y” (cm?3) of the same satisfy the following formulae: y??5×1020x+2×1021 and y??6×1018x+3×1020. When the thickness of the radiant heat preventive film is 5000 ?, x and y satisfy the following formulae: y??5×1020x+3×1021 and y??6×1018x+7×1020. Such radiant heat preventive films can have high reflectivity.

Abstract: A heat insulating container and its manufacturing method is provided. The heat insulating container comprises an inner container and an outer glass container, in which the breakage of the glass containers can be prevented even if a minute flaw is formed on either of the glass containers. The insulating container possesses a superior radiant heat insulating capability. The inner glass container is housed in the outer glass container with a gap in between, which air-gap functions as a heat insulating layer. A radiant heat preventive film containing metal oxide is provided at least either on the outer surface of the inner glass container or on the inner surface of the outer glass container with an intermediate film containing SiO2 in between.

Abstract: A heat insulating container is described, including an outer glass container and an inner glass container housed therein with a gap formed in-between as a heat insulating layer. A radiant heat preventive film containing a metal oxide is disposed on at least one of the external surface of the inner container or the internal surface of the outer container, wherein the radiant heat preventive film has a reflectivity of 35% or higher with a wavelength of 15 ?m. When the thickness of the radiant heat preventive film is 3000 ?, the Hall mobility “x” (cm2/V·s) and the carrier concentration “y” (cm?3) of the same satisfy the following formulae: y??5×1020x+2×1021 and y??6×1018x+3×1020. When the thickness of the radiant heat preventive film is 5000 ?, x and y satisfy the following formulae: y??5×1020x+3×1021 and y??6×1018x+7×1020. Such radiant heat preventive films can have high reflectivity.

Abstract: A thermal-insulation container with electric heater comprising an inner container and an outer container, said inner container being housed into the outer container integrally therewith so as to define a closed space separating the same from the outer container comprises a highly-resistive metal oxide film formed on an outer surface of said inner container facing said closed space, and an electrode unit provided on the highly-resistive metal oxide film facing said closed space for applying an electric current thereto.

Abstract: A heat insulating container is described, including an outer glass container and an inner glass container housed therein with a gap formed in-between as a heat insulating layer. A radiant heat preventive film containing a metal oxide is disposed on at least one of the external surface of the inner container or the internal surface of the outer container, wherein the radiant heat preventive film has a reflectivity of 35% or higher with a wavelength of 15 &mgr;m. When the thickness of the radiant heat preventive film is 3000 Å, the Hall mobility “x” (cm2/V·s) and the carrier concentration “y” (cm−3) of the same satisfy the following formulae: y≧−5×1020x+2×1021 and y≧−6×1018x+3×1020. When the thickness of the radiant heat preventive film is 5000 Å, x and y satisfy the following formulae: y≧−5×1020x+3×1021 and y≧−6×1018x+7×1020.

Abstract: A thermal-insulation container with electric heater comprising an inner container and an outer container, said inner container being housed into the outer container integrally therewith so as to define a closed space separating the same from the outer container comprises a highly-resistive metal oxide film formed on an outer surface of said inner container facing said closed space, and an electrode unit provided on the highly-resistive metal oxide film facing said closed space for applying an electric current thereto.

Abstract: A heat insulating container and its manufacturing method is provided. The heat insulating container comprises an inner container and an outer glass container, in which the breakage of the glass containers can be prevented even if a minute flaw is formed on either of the glass containers. The insulating container possesses a superior radiant heat insulating capability. The inner glass container is housed in the outer glass container with a gap in between, which air-gap functions as a heat insulating layer. A radiant heat preventive film containing metal oxide is provided at least either on the outer surface of the inner glass container or on the inner surface of the outer glass container with an intermediate film containing SiO2 in between.