Abstract: The present invention is a biphenylamidine derivative represented by the formula (1) or a pharmaceutically acceptable derivative thereof: and the biphenylamidine derivative or the pharmaceutically acceptable derivative thereof is a novel compound which can be used as a clinically applicable FXa inhibitor.

Abstract: An optical pickup device includes a photodetector divided into four light-receiving elements by two dividing lines, an incident optical system for irradiating a light beam onto an optical recording medium, and a receiving optical system for guiding a return light from the optical recording medium to the photodetector, wherein the receiving optical system includes astigmatism generating means for generating astigmatism having an astigmatism axis at an angle of 45 degree with respect to the two dividing lines.

Abstract: An artery vein visually separated MRA image and/or a higher blood/parenchyma contrast MRA image are provided by a magnetic resonance imaging system. The system comprises, in addition to a magnet generating a static magnetic field, a gradient generation unit generating magnetic gradients superimposed on the static magnetic field, a transmission/reception unit transmitting to a subject spin-exciting RF signal and receiving an MR signal emanated from the subject, a reconstruction unit reconstructing the image based on the MR, and a sequencer for performing a scan sequence of pulses through control of the gradient generation unit and the transmission/reception unit.

Abstract: In fast imaging of a multi-echo method represented by a fast spin echo (FSE) method, a pulse sequence is arranged such that a basic condition relating to a CPMG method is satisfied and a spoiler gradient magnetic field pulse is independently applied immediately after a flop pulse. The spoiler gradient magnetic field pulse for suppressing an undesired signal is applied by a predetermined amount or more so as to prevent superimposition of other gradient magnetic field components such as a phase encoding component, a rewind component, etc., and to prevent a residual component of an FID signal caused by a certain RF pulse from being refocused by a subsequent RF pulse.

Abstract: An optical pickup apparatus which can be designed compact while having a plurality of semiconductor lasers. The optical pickup apparatus, which reads recorded information from an optical recording medium, comprises an optical system including light intensity detection element having a quarter-split light receiving surface, two semiconductor lasers for emitting light beams of different wavelengths, an objective lens for directing each of the light beams onto an optical recording medium to form a light spot on a recording surface, and a holographic optical element located between the quarter-split light receiving surface and the objective lens, whereby the holographic optical element eliminates coma aberration and spherical aberration of light beams launched from the two semiconductor lasers and traveled through the recording surface and the objective lens, thereby generating a predetermined amount of astigmatism.

Abstract: An optical pickup apparatus which can be designed compact while having a plurality of semiconductor lasers.

Abstract: A thin layer having a plurality of pixels is secured to a surface of a transparent substrate. A light emitting layer is formed in each of the pixels of the thin layer. A direction changing devices is provided for changing a direction of a light beam emitted from the light emitting layer and for radiating the light beam passing through the transparent substrate.

Abstract: An optical pickup device includes at least four light-receiving-surface elements, at least two semiconductor lasers, and an optical system for irradiating a light beam onto an optical recording medium through an objective lens for forming a light spot onto an information recording surface thereof. The optical system guides the return light from the light spot to the four light-receiving-surface elements through the objective. The semiconductor lasers are mounted on a plurality of flat side surfaces of a single heat sink which do not exist on a common virtual plane.

Abstract: An optical wave guide path recording medium includes an optical wave guide path recording layer including an optical wave guide path and an input light coupling portion for introducing a light beam, the optical wave guide path having a plurality of refractive index discontinuous portions arranged thereon, wherein at least one of a shape and a relative distance of the refractive index discontinuous portions is formed based on information to be recorded; and a light transmitting elastic body layer disposed apart from the optical wave guide path recording layer at such a distance that when the refractive index discontinuous portions generate a reflected wave guide light after the light beam is introduced into the optical wave guide path, evanescent wave coupling of the reflected wave guide light is induced with the optical wave guide path recording layer and the reflected wave guide light is transmitted to the light transmitting elastic body layer, the light transmitting elastic body layer having an output light

Abstract: Disclosed is an optical pickup device which comprises a beam emitting system for supplying at least two independent light beams, a common light converging optical system for converging the light beams from the beam emitting system toward a recording medium, a first optical element for reflecting one of the light beams from the beam emitting system so as to guide the reflected light beam to the light converging optical system and for transmitting returning light beams from the recording medium therethrough without causing substantial aberration, a second optical element for causing astigmatic aberration to the returned light beams which pass through the first optical element, while transmitting the returning light beams therethrough, and a light receiving system for receiving the returning light beams which have passed through the second optical element.

Abstract: An optical pickup or an optical head capable of favorably irradiating a plurality of independent different light beams and receiving return light with a simple structure. The optical pickup is composed of a beam emitting unit for supplying at least two independent light beams, a common light converging optical system for converging the light beams from the beam emitting unit to a recording medium, an integrated prism for guiding each of the light beams from the beam emitting unit incident thereto to the light converging optical system and for providing return light from the recording medium incident thereto with astigmatism, and a light receiving element for receiving the return light provided with astigmatism by the prism.

Abstract: An information processing system has a plurality of information processing units. Each information processing unit has a system console interface control unit (SCI) connected to an information processing unit body (COM) and a service processor (SVP). The plurality of system console interface control units (SCI) are connected each other in a ring fashion. Each system console interface control unit (SCI) has a processing devcice for processing an interface between the self-service processor (SVP0) and the other-information processing unit body (COM1).

Abstract: Specific optically active 4- hydroxy-2-cyclopentenone derivatives and mixtures thereof having the formula (I): ##STR1## and an anticancer-agent and a bone formation accelerator containing the same as effective active ingredients.

Abstract: There is disclosed a semiconductor integrated circuit device in which a semiconductor integrated circuit substrate provided with an electromagnetic coil from which lead wires are drawn out is movably arranged within a magnetic field. When a current is caused to flow in the magnetic coil through the conductors, a force in the direction of a magnetic field is exerted on the electromagnetic coil. Thus, this semiconductor integrated circuit device can operate as an actuator allowing the entirety of the substrate to be movable in either a positive or a negative direction the magnetic field. When the substrate is moved interlocking with a measurement object, an induced current flows in the electromagnetic coil. Accordingly, by measuring this current, it is possible to operate this device as a sensor capable of measuring changes in the physical quantity, etc. of the measurement object.

Abstract: An MRI automatic power control system comprises a first unit for exciting each of a plurality of regions of a subject under examination with an excitation radio-frequency pulse of a different power, a second unit for acquiring magnetic resonance signals from the plurality of regions excited by the first unit, a third unit for identifying a maximum magnetic resonance signal contained in the magnetic resonance signals acquired by the second unit from the plurality of regions of the subject, and a fourth unit for storing the power of an excitation radio-frequency pulse that has provided the maximum magnetic resonance signal identified by the third unit as the optimum power of the excitation radio-frequency pulses.

Abstract: A recording medium from which recorded information is reproduced by irradiating a read-out light, including an information recording surface and a plurality of information recording surface and a plurality of information pits formed on the information recording surface. The information pits are formed by fine diffraction gratings having a grating constant (d) less than one half of the wavelength (.lambda.) of the read-out light. The free diffraction gratings have a plurality of grating directions, each of the plurality of grating directions corresponding to the information to be recorded.

Abstract: A recording medium for optically recording and reproducing video information at a high density. A plurality of information pits are formed on a recording surfaces by fine diffraction gratings having a constant less than half the wavelength of the light used for read out of the information.

Abstract: A magnetic resonance imaging apparatus based on a multi-echo imaging scheme and a multi-slice imaging scheme, is arranged to acquire all components of an echo signal which corresponds to low-frequency components in an image which is small in the absolute value of the phase encoding amount in a sufficient time to ensure a desired signal-to-noise ratio and to acquire echo signals which correspond to high-frequency components in the image which are large in the absolute value of the phase encoding amount in acquisition times shorter than that time to ensure a desired signal-to-noise ratio. The signal acquisition time can be reduced by shortening the time interval at which the 180.degree. pulses are generated. Due to reducing the signal acquisition time, parts of the echo signal in the read direction are not acquired. The components which have not been acquired are estimated by use of complex conjugate data of acquired data or mere 0 values for image reconstruction.

Abstract: A 2-substituted-2-cyclopentenone compound represented by the following formula (I) and an anticancer agent and a bone formation accelerator comprising the same as an effective active ingredient: ##STR1##

Abstract: The optical recording medium includes: an information recording substrate; and pits formed on the information recording substrate, each of the pits corresponding to a recording information unit comprising a plurality of bits, and having one of predetermined patterns for respectively generating different optical characteristics by projecting a light spot onto the pits.