Abstract: In order to improve accessibility of a doctor or the others to an examined person by forming continuous wide open-space area around a table top support of gantry side, in a nuclear magnetic resonance diagnosing apparatus for continuously taking tomograms of the examined person in a space formed between a pair of magnets comprising the cylindrical table top support of gantry side 11; the pair of magnets 4 and 5 vertically arranged, the table top support of gantry side being interposed between the pair of magnets; and a column 6 for supporting at least the magnet arranged in an upper side between the pair of magnets, the nuclear magnetic resonance diagnosing apparatus further comprises a support system such as a bed 3 having a slide table 43 sliding on the table top support of gantry side 11; a slide table support means 45 for mounting the slide table, the slide support means being arranged in a periphery of the table top support of gantry side and in a radial direction along the periphery; and a slide drive un

Abstract: A magnetic resonance imaging apparatus configured using a single column for supporting magnet devices disposed above and below the apparatus, wherein peripheries of yokes covering the magnet devices are formed to be arcs, thereby improving openness and accessibility of an operator to an object under examination.

Abstract: The multi-hop communication system according to the present invention is configured by a radio control station 1 connected to a core network, and radio stations 21, 22, 31-33. The radio control station 1 has a control signal TX/RX unit 12 which transmits/receives the control signal, an information signal TX/RX unit 13 which transmits/receives the information signal, and a communication channel controller 15 which transmits a “usage notification” indicating usage of communication channels managed by the radio control station 1 to the radio stations 21, 22, 31-33 using the control signal. The radio station has a control signal TX/RX unit 42 which transmits/receives the control signal, and an information signal TX/RX unit 43 which transmits/receives the information signal.

Abstract: An MRI apparatus having an open structure includes a static magnetic field generating magnet including magnetic field generating sources arranged above and below an imaging space and magnetic field fluctuation reducing plates arranged inside the magnet. Gradient magnetic field coils are fixed to the static magnetic field generating magnet so as to not be in contact with the magnetic field fluctuation reducing plates. When the strength of the magnetic field generated by the static magnetic field generating magnet fluctuates due to vibration of the gradient magnetic field coils or other devices during an imaging operation of the MRI apparatus, an eddy current is generated on the magnetic field fluctuation reducing plates in response to the magnetic field fluctuation components. Magnetic flux which cancels the static magnetic field fluctuation components is generated due to this eddy current, and consequently, a time-sequentially stable static magnetic field can be obtained.

Abstract: Provided is a recording medium of a multi-layered structure comprising a base layer and a surface layer provided on at least one side of the base layer, wherein the base layer is mainly composed of fibrous material and the surface layer comprises an alumina hydrate of a boehmite structure incorporated in the fibrous material.

Abstract: An ink-jet recording apparatus is adapted to eject ink from an ink-jet head onto a recording medium held in position by means of an electrostatic adsorption system. The surface resistance of the recording medium is not greater than 1×1011 &OHgr;/□.

Abstract: A recording medium having a non-sized single-layer fibrous structure which is composed mainly of a fibrous material and contains no filler and employing a face of the single-layer fibrous structure as an ink-receiving face, wherein alumina hydrate of a boehmite structure and a cationic resin are present at least near the surface of the fibrous material.

Abstract: Disclosed herein is a recording medium comprising an alumina hydrate having an average pore radius of 20 to 200 Å and a half breadth of pore radius distribution of 20 to 150 Å.

Abstract: The present invention relates to a radio communication system comprising base stations and mobile stations and a method for controlling transmission power in the system where the base station is able to perform multi-point transmission for transmitting the same signal to a plurality of the mobile stations. In the present invention, the mobile station targeted for the multi-point transmission provides the base station of an increase request or a decrease request of the transmission power by respectively transmitting or not transmitting a predetermined signal to the base station.

Abstract: A dispersion of alumina hydrate comprises an alumina hydrate containing 0.1 to 1.0% by weight of a nitrate anion and having an average pore radius of 20 to 200 Å and a half breadth of pore radius distribution of 20 to 150 Å and deionized water. Another dispersion of alumina hydrate comprises an alumina hydrate containing 0.1 to 1.0% by weight of a nitrate anion and having at least two peaks in pore radius distribution and deionized water. Another dispersion of alumina hydrate comprises a titanium dioxide-containing alumina hydrate containing 0.1 to 1.0% by weight of a nitrate anion and deionized water. In each of these dispersions, when the alumina hydrate is dispersed in water at a solids concentration of 15% by weight to form a dispersion, the viscosity of the dispersion is not higher than 75 cP as measured at 20° C. and the dispersion has a shear rate of 7.9 sec−1.

Abstract: In a superconductive magnet device comprising upper and lower vacuum vessels coupled by a coupling conduit, the upper and lower vacuum vessels 9 and the coupling conduit 24 coupling them are made of a high electric-resistance material so that the magnetic flux of gradient magnetic field coils reaches the upper and lower pair of a second heat shields 8 and a coupling conduit 23 coupling the pair of the second heat shields 8. The coupling conduit 23 coupling the upper and lower pair of the second heat shields 8 is provided with a slit (cut) 41 extending in the vertical direction so that no eddy currents occur and thus eddy currents generated asymmetrically in the coupling conduit 23 are reduced. Artifacts caused by asymmetrical eddy currents can by reduced in an MRI apparatus using such a magnet device.

Abstract: A destination station 3 in a wireless communication system for a multi-hop connection selects a transmission path having a minimum total of required transmission power values of respective stations on the transmission path among candidates of the transmission path from a source station 1 to the destination station 3 and transmits a pilot signal to the source station 1 and a relay station 2, the pilot signal including identification information about the respective stations on the selected transmission path and required transmission power values thereof. Thus, the source station 1 and the relay station 2, which have received this pilot signal, can determine the transmission path having the minimum total of the required transmission power values by use of the identification information included in the received pilot signal.

Abstract: The object is to control interference in a permissible range by applying the CDMA system to signal collision in the conventional CSMA and TDMA base multihop systems and to relax the hidden terminal problem and others to enhance the throughput of the entire system by grouping of channel groups in multihop transmission and by control of transmission based on an interference level from another station. A multihop relay station calculates a desired signal level, for example, from an interference level at its own station of a packet sent from a mobile station, and notifies the mobile station of the desired signal level; and the mobile station calculates a transmission power amount of a packet from the desired signal level, determines whether the packet is transmissible to the station as a source of the desired signal level, on the basis of the transmission power amount, and transmits the packet by a power of the transmission power amount to the source station determined as a packet-transmissible station.

Abstract: A printing apparatus which uses a printing medium, which can retain a large amount of coloring material near its surface and can cause ink solvent to permeate rapidly, and can perform printing in a printing mode that is suitable for the above-mentioned printing medium, is provided. Furthermore, a user friendly printing apparatus is realized. More specifically, the printing mode for the above-mentioned printing medium is a mode that uses less ink ejection per one pixel. Even in this case, high speed printing based on printing of sufficient density and high ink absorption become possible. Furthermore, even in the case printing is made on ordinary paper, a lesser ink ejection amount in the same printing mode is performed, but since this printing mode uses processing liquid that makes the ink insoluble, in a similar way, printing of sufficient density and high speed printing becomes possible.

Abstract: A magnetic resonance imaging apparatus configured using a single column for supporting magnet devices disposed above and below the apparatus, wherein peripheries of yokes covering the magnet devices are formed to be arcs, thereby improving openness and accessibility of an operator to an object under examination.

Abstract: Disclosed herein is a printing medium provided on a base material with a porous ink-receiving layer which comprises, as principal components, an alumina hydrate having a boehmite structure and a binder, wherein when measuring with an ink containing 0.1% by weight of a surfactant, the time required to absorb 30 ng of an ink is 400 milliseconds or shorter, the dye-adsorbing capacity falls within a range of from 900 to 2,000 mg/m2, and the index of dye-adsorbing rate falls within a range of from 0.0 to 5.0.

Abstract: Provided is a recording medium of a multi-layered structure comprising a base layer and a surface layer provided on at least one side of the base layer, wherein the base layer is mainly composed of fibrous material and the surface layer comprises an alumina hydrate of a boehmite structure incorporated in the fibrous material.

Abstract: The present invention is a network system of radio base stations comprising base stations provided in a plurality of cells and a control station controlling the base stations, in which the base stations and the control station are connected by optical fibers using a wavelength multiplexing transmission method, wherein: the base station comprises a variable-wavelength transmitter for transmitting an optical signal having a predetermined wavelength, and an optical coupler for combining optical signals from the variable-wavelength transmitter in order to transmit the optical signals using the wavelength multiplexing transmission method, the control station comprises a plurality of optical receivers for receiving wavelengths of the optical signals transmitted using the wavelength multiplexing transmission method, and an optical coupler for splitting the wavelength-multiplexed optical signals transmitted from the base stations into the optical receivers by wavelength, and when the radio communication terminal comm

Abstract: Provided is a recording medium comprising alumina hydrate, wherein said alumina hydrate having a boehmite structure and containing silica within alumina hydrate particles, in part of or a whole of said alumina hydrate particles, and the crystallinity of said alumina hydrate obtained by an X-ray diffraction analysis of said recording medium is in a range of from 15 to 80.

Abstract: A mobile station is configured to measure receiving qualities of respective signals from a first antenna and a second antenna of a base station (S3, S5), store the results of the measurement, and request the base station to retransmit a signal from an antenna with a higher receiving quality, based on the stored measurement results, when an error is detected in received data thereafter (S10, S11, S12). The base station retransmits the data, using the antenna with the higher receiving quality (i.e., a base station antenna to yield the higher receiving quality at the mobile station) (S15). In another aspect, the mobile station measures a receiving quality of a signal and notifies the base station of the receiving quality. The base station selects a radio channel adapted to a receiving quality on the basis of the measurement result and transmits a signal, using the radio channel.