Abstract: The present invention provides a radiolabeled ligand which is highly selective and potent for glutamate transporters and is usable in specifically detecting the glutamate transporter. Specifically, the present invention provides a 3-[3-(benzoylamido)benzyloxy]aspartic acid having a radioactive substituent on the benzoyl group which is represented by the following formula (1), or an ester or salt thereof: wherein X represents a substituent containing a radioactive atom(s) which is selected from a straight or branched lower aliphatic alkyl group, a hydroxyl group, a straight or branched lower aliphatic alkoxy group, an amino group, a straight or branched lower aliphatic acylamido group, a halogen atom and a straight or branched lower aliphatic haloalkyl group; and R1 and R2 each represents a hydrogen atom, a straight or branched lower aliphatic alkyl group or an acetoxymethyl group.

Abstract: An electrical discharge machine feeds an electrode wire received within a guide tube to a process region of a machined article. The electrical discharge machine includes a cylindrical hollow driving shaft arranged in a vertical direction, which has a space for receiving the guide tube with the electrode wire along a vertical central axis. A head assembly includes a first holding member for holding the guide tube, and a second holding member for holding the electrode wire extending from a bottom opening of the guide tube. The head assembly is detachably coupled with a bottom portion of the driving shaft. Therefore, the electrode wire can be replaced by replacing the head assembly.

Abstract: An electric discharge machining apparatus includes: a guide electrode (7) that is shaped like a hollow bar and receives a small-diameter wire electrode (8) for electric discharge machining in such a way that the small-diameter electrode can freely slide and; guide electrode holding means (9, 19, 20) that holds this guide electrode (7) at a specified position; pressurized fluid supply means (10, 11) that supplies pressurized fluid into the guide electrode (7) to feed out the small-diameter wire electrode (8) from inside the guide electrode (7) to an electric discharge machining side; and small-diameter wire electrode holding means (21) that automatically holds the small-diameter wire electrode (8) fed out of the guide electrode (7).

Abstract: In an electric discharge machine, wherein electric power is supplied between an electrode and a workpiece to machine the workpiece, a jumping motion is performed to temporarily increase a distance between the electrode and the workpiece. The electric discharge machine includes a detector for detecting a machining reaction force; a setting unit for setting a specified value of the machining reaction force; a comparator for comparing a detected value of the machining reaction force with a specified value of the machining reaction force; and a changing unit for changing a locus of the jumping motion so that the machining reaction force can be reduced if the comparator finds that the detected value of the machining reaction force is greater than the specified value of the machining reaction force.

Abstract: An electric discharge machining apparatus has improved responsive drivability and improved machining speed. A tool electrode has a tip end directed toward a work piece, a voltage applied between the tool electrode and the work piece generating a discharge. A drive shaft is connected with the tool electrode. An electrode driving device has magnetic bearings for moving the drive shaft in three directions, including a Z-axis direction, which is an axial direction of the drive shaft, a Y-axis direction perpendicularly crossing the Z-axis direction, and an X-axis direction perpendicularly crossing the Y-axis direction and Z-axis direction, by supplying electric current to electromagnetic portions to control magnetic attraction. A movable coupling is connected with an end of the drive shaft and is movable in the three directions. An electric motor is connected with an end of the coupling for rotating the drive shaft through the coupling.

Abstract: An electric discharge machining apparatus has improved responsive drivability and improved machining speed. A tool electrode has a tip end directed toward a work piece, a voltage applied between the tool electrode and the work piece generating a discharge. A drive shaft is connected with the tool electrode. An electrode driving device has magnetic bearings for moving the drive shaft in three directions including a Z-axis direction which is an axial direction of the drive shaft, a Y-axis direction perpendicularly crossing the Z-axis direction, and an X-axis direction perpendicularly crossing the Y-axis direction and Z-axis direction, by supplying electric current to electromagnetic portions to control magnetic attraction. A movable coupling is connected with an end of the drive shaft and is movable in the three directions. An electric motor is connected with an end of the coupling for rotating the drive shaft through the coupling.

Abstract: An electric discharge machine in which electric power for machining is supplied by a machining electric power supply means (13) to between an electrode (1) and a workpiece (2) provided in a machining solution (3), electric discharge machining is conducted on the workpiece (2) while the electrode (1) and the workpiece (2) are relatively being moved by a positioning means, and a jumping motion is conducted, the electric discharge machine comprising: a machining reaction force detecting means (20, 21, 22) for detecting a machining reaction force; a machining reaction force specified value setting means (23) for setting a specified value of the machining reaction force; a machining reaction force comparing means (24) for comparing a detected value of the machining reaction force, which is detected by the machining reaction force detecting means (20, 21, 22), with a specified value of the machining reaction force which is set by the machining reaction force specified value setting means (23); and a motion locus ch

Abstract: An electric discharge machining apparatus is provided with an electrode mounting section which mounts a tool electrode, and an electrode driving section which has a radial driving section which supports and drives the electrode mounting section in a non-contact manner in a radial direction and a thrust driving section which supports and drives the electrode mounting section in a non-contact manner in a thrust direction, and a machining state is controlled by adjusting a position of the tool electrode by the electrode driving section. Because of such a structure, a mass increase of a section which should be driven together with the electrode is restricted, and high response in X-axis, Y-axis and Z-axis directions are achieved, whereby an electric discharge machining apparatus capable of improving a machining speed and a machining accuracy is achieved.

Abstract: A drive unit supplies to an auxiliary information generating section a first event notice related to reproducing operation and a second event notice indicating reproducing position information, regarding content recorded on a recording medium. The auxiliary information generating section generates auxiliary information based on the first and second event notices, for storage in an information storage section. A comparison/computation section makes a comparison or a computation using the reproducing position information indicated by the auxiliary information and reproducing position information indicated by a later-supplied second event notice. A command issuing section issues a command for controlling reproduction of the content based on a result of the comparison or the computation. As a result, a reproducing operation differing from an operation according to a predetermined command can be performed.

Abstract: A layered anisotropically conductive element, a resistant element, and a feed element constitute an electrode for discharge machining. The layered anisotropically conductive element includes high conductivity layers and low conductivity layers alternately laminated on each other, the high conductivity layers and the low conductivity layers being made of thin metallic plates coated with an insulating film. The layered anisotropically conductive element has an anisotropic conductivity, in which the conductivity in a direction parallel to the low conductivity layers is much higher than that in a direction perpendicular to the low conductivity layers. The resistant element is connected to one of end surfaces of the layered anisotropically conductive element perpendicular to the layers. The feed element is connected to the resistant element.

Abstract: An electric discharge machining device including an interelectrode servo control unit for controlling an interelectrode distance between an electrode and an object while applying a voltage across the electrode and the object, and a jump control unit for controlling a jump operation in which the interelectrode distance is temporarily increased at time intervals or in response to a machining state jump control unit includes a jump locus generation unit for generating a smooth command locus having a frequency component in a frequency range. The jump control unit controls the jump operation by using a smooth command locus generated by the jump locus generation unit.

Abstract: In an electric discharge machining method and apparatus of dividing a rocking shape for a change in a swing speed and a rocking movement completion determination and determining whether or not a target machining shape is reached every each division shape and completing rocking machining when the rocking movement completion determination is made in all the division shapes, the rocking shape is divided so that either one or both of each corner and the center of each side of the target machining shape is located on a bisector or substantially a bisector of a division angle (&thgr;s).

Abstract: An electric discharge machining apparatus is provided with an electrode mounting section which mounts a tool electrode, and an electrode driving section which has a radial driving section which supports and drives the electrode mounting section in a non-contact manner in a radial direction and a thrust driving section which supports and drives the electrode mounting section in a non-contact manner in a thrust direction, and a machining state is controlled by adjusting a position of the tool electrode by the electrode driving section. Because of such a structure, a mass increase of a section which should be driven together with the electrode is restricted, and high response in X-axis, Y-axis and Z-axis directions are achieved, whereby an electric discharge machining apparatus capable of improving a machining speed and a machining accuracy is achieved.

Abstract: A detected value indicating a machining state is filtered and a machining gap between an electrode and a workpiece is adjusted by using a control variable obtained through the filtering. Therefore, machining speed can be improved by maintaining a stable machining state through suppression of a disturbance in a gap distance control system due to eccentricity of an electrode, due to fluctuations in electric characteristics at feeding brush sections, and due to mechanical resonance of the electrode driving system.

Abstract: The invention relates to a propylene-based copolymer and its moldings which are transparent and have good ordinary impact resistance, good cold impact resistance, and well-balanced flexibility and blocking resistance. The propylene-based copolymer comprises from 50 to 90% by weight of a propylene-ethylene copolymer [A] of such that (1) its ethylene content (&agr;) falls between 0.2 and 10% by weight, (2) the amount of its fraction (Wp) eluted within the temperature range between (Tp−5)° C. and (Tp+5)° C. is at least 20% by weight, with Tp (°C.) being the peak temperature for essential elution in temperature-programmed fractionation chromatography of the copolymer, and (3) the amount of its fraction (W0) eluted within the temperature range not higher than 0° C.

Abstract: An error signal is obtained from a reference value and a value indicating a detected state in machining, a first controlled variable is obtained by adding a value obtained by multiplying the error signal by a proportion gain to a value obtained by multiplying the error signal by a first integration gain, a second controlled variable is obtained by multiplying an instruction value by a second integration gain for integration, and a value obtained by adding the first controlled variable to the second controlled variable and multiplying the sum by a machining trajectory vector is used as a controlled variable for a driving unit for adjusting a distance between an electrode and a workpiece in discharge machining. Therefore, it is possible to realize a discharge machining control method and apparatus in which the machining speed can be improved by always maintaining the discharge machining process in an optimal state.

Abstract: A layered anisotropically conductive element (11), a resistant element (12), and a feed element (13) constitute an electrode (14) for discharge machining. The layered anisotropically conductive element (11) includes conductive layers and low-conductive layers alternately laminated on each other, the conductive layers and the low-conductive layers being made of thin metallic plates coated with an insulative film. The layered anisotropically conductive element (11) has an anisotropic conductivity, in which the conductivity in a direction parallel to the low-conductive layers is much higher than that in a direction perpendicular to the low-conductive layers. The resistant element (12) is connected to one of layer-perpendicular end surfaces (11c) of the layered anisotropically conductive element (11). The feed element (13) is connected to the resistant element (12).

Abstract: In a parallel processor system comprising a plurality of processor elements constituting a network, a source processor element wishing to broadcast data to a plurality of destination processor elements sends a broadcast request message containing the target data to a broadcast exchanger. The broadcast exchanger converts the received message into a broadcast message and sends it over the network to the destinations. A plurality of broadcast request messages, if transmitted parallelly to the broadcast exchanger, are serialized thereby so that only one broadcast message will be transmitted at a time over the network. This prevents deadlock from occurring between different broadcast messages. The routes for transmitting broadcast request messages and those for transmitting broadcast messages are arranged so as not to overlap with one another. This suppresses deadlock between any broadcast request message and broadcast message. The broadcast exchanger is replaced alternatively with one of the partial networks.

Abstract: A computer system is composed of a processor 10, a memory control circuit 70, and interleaved bank memories 41 through 44. The memory control circuit contains random access queue entries 71 through 73 commonly used by all memories 41 through 44. A bypass 80 allows direct bank access without writing memory access requests to the queue entries 71 through 73. Sequence is maintained by the in-bank access sequence assurance circuits 90. Because the queue entries 71 through 73 allow memory control without providing the number of entries in an integral multiple of the number of banks, the entire circuit scale is reduced. All bank busy circuits in the system are integrated on a single LSI to reduce delay, thereby enhancing processing speed. The bypass 80 eliminates queue read/write cycles from data access time, thereby enhancing processing speed.

Abstract: In a network-connected multiprocessor computer system, good cost performance and multifunctional network control is realized. In a computer system in which a plurality of processors are connected through a network, an interrupting signal line is provided in additional transmission lines. A packet is used for inter-processor communication, and a barrier synchronization packet of a fixed length is used in barrier synchronization processing. Although a barrier synchronization packet is transferred from a sending control circuit through the same transmission line for an ordinary packet, an interrupting signal is also transferred through the interrupting signal line at the same time.