Abstract: The present invention relates to a small size thermal conductivity measuring apparatus of a pellet type hydrogen storage alloy, a measuring method, and an analysis system. More specifically, a small size thermal conductivity measuring device of a hydrogen storage alloy pellet, includes: a measurement sample unit which is a target to be measured and is configured by a hydrogen storage alloy pellet; a reference material unit in which one surface is configured to be in contact with one surface of the measurement sample unit and a mounting groove is formed one side of the contact surface; and a thermal probe which is mounted in the mounting groove to measure a thermal conductivity of the measurement sample unit based on a temperature change.

Abstract: The present invention relates to a small size thermal conductivity measuring apparatus of a pellet type hydrogen storage alloy, a measuring method, and an analysis system. More specifically, a small size thermal conductivity measuring device of a hydrogen storage alloy pellet, includes: a measurement sample unit which is a target to be measured and is configured by a hydrogen storage alloy pellet; a reference material unit in which one surface is configured to be in contact with one surface of the measurement sample unit and a mounting groove is formed one side of the contact surface; and a thermal probe which is mounted in the mounting groove to measure a thermal conductivity of the measurement sample unit based on a temperature change.

Abstract: A zoom lens barrel assembly includes a first barrel, a second barrel, a lens barrier, and a transparent member. The first barrel supports at least one lens. The second barrel surrounds at least a portion of an outer surface of the first barrel, and supports the first barrel to protrude along an optical axis direction. The lens barrier is disposed on a front side of the first barrel, and is moved in a direction that intersects an optical axis to expose the at least one lens when the first barrel is protruded. The transparent member is disposed on a front side of the lens barrier, and prevents impurities from entering the first barrel.

Abstract: A zoom lens barrel assembly includes a first barrel, a second barrel, a lens barrier, and a transparent member. The first barrel supports at least one lens. The second barrel surrounds at least a portion of an outer surface of the first barrel, and supports the first barrel to protrude along an optical axis direction. The lens barrier is disposed on a front side of the first barrel, and is moved in a direction that intersects an optical axis to expose the at least one lens when the first barrel is protruded. The transparent member is disposed on a front side of the lens barrier, and prevents impurities from entering the first barrel.

Abstract: The present invention relates to a hydrogen production method from water by using germanium oxide, more precisely a hydrogen and oxygen production method from water by thermochemical cycles using germanium oxide. The method of the present invention facilitates the production of hydrogen by multi-step thermochemical cycle using germanium oxide, so that it is characterized by that the thermochemical cycle is low temperature reaction and only water is consumed and other materials are not consumed but circulated.

Abstract: The present invention relates to a hydrogen production method from water by using germanium oxide, more precisely a hydrogen and oxygen production method from water by thermochemical cycles using germanium oxide. The method of the present invention facilitates the production of hydrogen by multi-step thermochemical cycle using germanium oxide, so that it is characterized by that the thermochemical cycle is low temperature reaction and only water is consumed and other materials are not consumed but circulated.