Abstract: The present invention provides a mobile communication system including an IP (Internet Protocol) core network, a mobile communication network, a switching center server and a mobile terminal, wherein a plurality of services in each of the IP network and the mobile communication network are provided for the mobile terminal.

Abstract: An epitaxial growth susceptor having a pocket that horizontally supports a single-crystal substrate in an epitaxial growth apparatus in which the pocket has an outer peripheral region with which the single-crystal substrate comes into contact to be supported; and a central region that is surrounded by the outer peripheral region and does not come into contact with the single-crystal substrate, one or more through holes that pierce the epitaxial growth susceptor are formed in the central region of the pocket, and the outer peripheral region of the pocket has a tapered shape that is inclined with a tilt angle that is greater than 0° and less than 1° in such a manner that a depth increases toward the central region, and also has a horizontal width that is 3.3% or more of a diameter of the single-crystal substrate to be supported.

Abstract: The invention provides an epitaxial growth method which is a single wafer processing epitaxial growth method by which at least a single crystal substrate is placed in a reaction chamber with an upper wall having a downward convexity and an epitaxial layer is deposited on the single crystal substrate by introducing raw material gas and carrier gas into the reaction chamber through a gas feed port, in which, after any one of the radius of curvature of the upper wall of the reaction chamber and a difference between an upper end of the gas feed port and a lower end of the upper wall of the reaction chamber in the height direction or both are adjusted in accordance with the flow rate of the carrier gas which is introduced into the reaction chamber through the gas feed port, an epitaxial layer is deposited on the single crystal substrate.

Abstract: An exposing device includes a light source that emits scanning light, a polygonal rotating mirror that scans and deflects the scanning light in a specific scanning direction, a reflection mirror that reflects the scanning light that has been scanned and deflected at plural reflection points aligned in a specific direction for the scanning light to go incident on the image carrier, and a unit main body in which the polygonal rotating mirror and the reflection mirror are disposed at a specific interval. The unit main body has two attachment fixing portions on almost a same line linking the reflection points and fixed to the apparatus main body. An attachment support is supported on the apparatus main body and allows free expansion of the unit main body in a plane direction including the scanning direction of the polygonal rotating mirror on a side where the polygonal rotating mirror is installed.

Abstract: The present invention provides a method for manufacturing an epitaxial wafer by supplying a raw material gas onto a silicon wafer to perform vapor-phase growth of an epitaxial layer, wherein a thickness of the epitaxial layer that is formed at a peripheral portion of the silicon wafer is controlled by controlling a growth rate and/or a growth temperature of the epitaxial layer that is subjected to vapor-phase growth. As a result, there is provided the method that enables manufacturing an epitaxial wafer having a small roll-off value by controlling a thickness of an epitaxial layer near the outermost periphery at the time of epitaxial growth.

Abstract: A signaling gateway can handle the signaling communication of SS7 among the STP in PSTN and a plurality of nodes using different types of SIGTRAN protocols in the IP network. The signaling gateway includes a routing function unit which discriminates SIGTRAN protocol for each of the nodes using routing information contained in a received SS7 message from the STP, and a plurality of protocol units, each being provided for corresponding type of SIGTRAN protocol to be used for each of the nodes. The routing function unit outputs a data transfer request to the protocol unit which corresponds to the discriminated SIGTRAN protocol. The protocol unit constructs a corresponding protocol format of SIGTRAN protocol using data contained in the data transfer request and sets an originating IP address to the same value regardless the SIGTRAN protocol and a port number corresponding to the type of SIGTRAN protocol, and requests signal transmission.

Abstract: Upon receipt of a location registration request from a mobile terminal, a core network registers the mobile terminal in a node decided according to a subscriber contract of the mobile terminal. Moreover, the core network transmits a temporary subscriber identifier for identification of containing in the node to the mobile terminal. A radio network relays a message signal between a mobile terminal and a core network. When a controller receives a message signal containing the temporary subscriber identifier from the mobile terminal, the controller identifies the node containing the mobile terminal according to the temporary subscriber identifier and transmits the message signal to the node.

Abstract: A light source device is provided with a laser diode for emitting a light beam, and a base member obtained by integrally forming a flat portion and a standing portion projecting in a direction perpendicular to the flat portion and to have the laser diode mounted therein. The flat portion is formed with one or more screw holes for fixing the base member to a specified installation surface by means of screw(s), and through hole(s) penetrating the flat portion between the standing portion and the screw hole(s) formed near the standing portion.

Abstract: In unit chassis 30 in which optical instruments are mounted, three of main fixing members 31, 32 and 33 formed in the reinforced reinforcing areas or in the contiguous areas thereof, as well as sunsidiary fixing member 34 connected to said main fixing members by flexible member 35, are provided, and unit chassis 30 is fixed by said fixing members in more than four places. The polygon mirror as a vibration source is mounted in the position 9x that are inside of a triangle PO formed by three of main fixing members 31, 32 and 33 or in the vicinity thereof. In this case, high-reinforcing area P2 reinforced more than any other area is formed between said position 9x and the position 8x of deflecting mirror for reflecting the scanned beam light. Main fixing members 31 and 32 among three of main fixing members are formed in two places having the high-reinforcing area between them.

Abstract: An exposing device includes a light source that emits scanning light, a polygonal rotating mirror that scans and deflects the scanning light in a specific scanning direction, a reflection mirror that reflects the scanning light that has been scanned and deflected at plural reflection points aligned in a specific direction for the scanning light to go incident on the image carrier, and a unit main body in which the polygonal rotating mirror and the reflection mirror are disposed at a specific interval. The unit main body has two attachment fixing portions on almost a same line linking the reflection points and fixed to the apparatus main body. An attachment support is supported on the apparatus main body and allows free expansion of the unit main body in a plane direction including the scanning direction of the polygonal rotating mirror on a side where the polygonal rotating mirror is installed.

Abstract: The present invention relates to fumaric acid derivatives and ophthalmic lenses using them. More specifically, the present invention relates to a fumaric acid derivative having a hydrophilic group and a silicon-containing alkyl group within a molecule, and to contact lenses or intraocular lenses. The fumaric acid derivatives of the present invention provide, on one hand, superior oxygen permeability by having a silicon-containing alkyl group within the molecular structure, and on the other hand, improved compatibility with other hydrophilic monomers by having a hydrophilic group within the same molecule.

Abstract: The present invention provides a mobile communication system including an IP (Internet Protocol) core network, a mobile communication network, a switching center server and a mobile terminal, wherein a plurality of services in each of the IP network and the mobile communication network are provided for the mobile terminal.

Abstract: A light source device is provided with a laser diode for emitting a light beam, and a base member obtained by integrally forming a flat portion and a standing portion projecting in a direction perpendicular to the flat portion and to have the laser diode mounted therein. The flat portion is formed with one or more screw holes for fixing the base member to a specified installation surface by means of screw(s), and through hole(s) penetrating the flat portion between the standing portion and the screw hole(s) formed near the standing portion.

Abstract: This invention provides a image forming apparatus, which combines the prevention of warp and the prevention of resonance of the unit chassis in which the optical instruments for image formation are mounted, neither with additional parts nor additional mounting processes thereof. For example, in Unit chassis 30 in which optical instruments are mounted, three of Main fixing members 31, 32 and 33 formed in the reinforced reinforcing areas or in the contiguous areas thereof, as well as Subsidiary fixing member 34 connected to said main fixing members by Flexible member 35, are provided, and Unit chassis 30 is fixed by said fixing members in more than four places. The polygon mirror as a vibration source is mounted in the position 9x that are inside of a triangle PO formed by three of Main fixing members 31, 32 and 33 or in the vicinity thereof.

Abstract: The invention relates to an improvement of an alkaline storage battery and provides an alkaline storage battery excellent in high-rate discharge characteristic at low temperatures particularly by suppressing the increase of electrode resistance. The alkaline storage battery includes a positive electrode which includes a metal oxide as the main constituent material, a negative electrode which includes a hydrogen absorbing alloy, a separator, and an alkaline electrolyte, wherein the negative electrode has a capacity per unit area of 10-40 mAh/cm2.