Abstract: An antenna apparatus is disclosed including an antenna element; an installation base being a base where the antenna element is installed; a container including an upper surface that opens and housing the antenna element and the installation base, the upper surface being a surface closest to a ground surface when the container is installed in a ground; and a cover being formed of FRP (Fiber-Reinforced Plastics) and covering an opening of the container, wherein the installation base includes a height adjustment mechanism that adjusts a distance from the antenna element to the cover. In other aspects, a radio base station is also disclosed.

Abstract: An antenna unit for glass according to the present invention is installed on the indoor side of a glass sheet, and transmits and receives electromagnetic waves at the indoor side through the glass sheet.

Abstract: A configuration is adopted in which an antenna apparatus of an underground embedded type to be disposed below a cover includes an antenna element and installation base where the antenna element is installed and which includes a height adjustment mechanism for adjusting a distance from the antenna element up to the cover.

Abstract: An antenna apparatus is disclosed including an antenna element; an installation base being a base where the antenna element is installed; a container including an upper surface that opens and housing the antenna element and the installation base, the upper surface being a surface closest to a ground surface when the container is installed in a ground; and a cover being formed of FRP (Fiber-Reinforced Plastics) and covering an opening of the container, wherein the installation base includes a height adjustment mechanism that adjusts a distance from the antenna element to the cover. In other aspects, a radio base station is also disclosed.

Abstract: An antenna unit for glass according to the present invention is installed on the indoor side of a glass sheet, and transmits and receives electromagnetic waves at the indoor side through the glass sheet.

Abstract: An antenna unit for glass according to the present invention is installed on the indoor side of a glass sheet, and transmits and receives electromagnetic waves at the indoor side through the glass sheet.

Abstract: A configuration is adopted in which an antenna apparatus of an underground embedded type to be disposed below a cover includes an antenna element and installation base where the antenna element is installed and which includes a height adjustment mechanism for adjusting a distance from the antenna element up to the cover.

Abstract: An antenna unit for glass according to the present invention is installed on the indoor side of a glass sheet, and transmits and receives electromagnetic waves at the indoor side through the glass sheet.

Abstract: A system management apparatus for managing a network system, the system management apparatus includes a processor configured to perform specifying of a first communication path including the L3 relay apparatus between a first pair of information processing apparatuses included in the network system and a second communication path not including any L3 relay apparatus between a second pair of information processing apparatuses included in the network system, store management information in the memory, the management information including information of the first communication path and the second communication path in association with information of the first pair of information processing apparatuses and the second pair of information processing apparatuses, and when a failure occurs in the network system, perform a detection of communication between a third pair of information processing apparatuses affected by the failure.

Abstract: A magnetic powder of an Sm—Fe—N alloy, which has a mean particle diameter of 0.5 to 10 &mgr;m, and either an average acicularity of 75% or above or an average sphericity of 78% or above. The powder exhibits an extremely high residual magnetization and an extremely high coercive force, since particles characterized by the above acicularity or sphericity have particle diameters approximately equal to that of the single domain particle and nearly spherical particle shapes. The powder can be produced by preparing an Sm—Fe oxide by firing a coprecipitate corresponding to the oxide, mixing the obtained oxide with metallic calcium and subjecting the mixture to reduction/diffusion and nitriding successively.