摘要:
The present invention provides a method of separating ergosterol from a solution containing ergosterol in water-insoluble organic solvent, comprising supplying water to the solution and precipitating ergosterol. According to the method of the present invention, ergosterol crystals can be obtained at a high yield. Moreover, controlled water supply provides granular ergosterol aggregates exhibiting good solid-liquid separation character at a high yield.
摘要:
In an apparatus for reproducing digitized signals recorded in successive, substantially circular tracks on a rotated disc by means of a pickup of the optical type which, in a normal scanning state, scans the tracks in succession; a first or prepare-to-play command signal causes the pickup to reproduce the digitized signals for a predetermined interval corresponding to more than one of the tracks on the disc starting from a desired position on such one track and the digitized signals reproduced in that predetermined interval are stored, desirably in a random access memory (RAM), whereupon a standby state of the pickup is established in which the pickup traces a closed loop on the rotated disc within a range corresponding to the previously mentioned predetermined interval. Upon reception of a second or play command signal, the pickup is released from its standby state at the completion of the tracing of the closed loop during which the play command signal occurred and the normal scanning state of the pickup is reestablished. Further, in response to the second or play command signal, the stored digitized signals are read out from the RAM and transmitted, starting with the signals corresponding to the desired position irrespective of the rotational position of the disc at the time of the play command signal, and the digitized signals reproduced by the pickup on the reestablishment of its normal scanning state and, more particularly, commencing with the digitized signals following the predetermined interval, are sequentially stored in the RAM and then sequentially read out and transmitted therefrom.
摘要:
This invention relates to azimuth adjustment means for a magnetic head and, more particularly, to azimuth adjustment means for a magnetic head adapted to precisely adjust the azimuth of the magnetic head by remote control. The head azimuth adjustment means comprises an azimuth adjustment screw having its end acting on a head base on which a magnetic head is mounted and rotatable so that the head base is positioned so as to have the proper azimuthal position of the magnetic head. The head azimuth adjustment means further comprises an adjustment member interposed between the end of the azimuth adjustment screw and the head base and slidably movable in its longitudinal direction, the adjustment member having an inclined surface provided thereon in a direction of its slidable movement. If the slidable adjustment member is slidably moved in one direction, then the magnetic head is adjusted in its azimuthal position in one direction, and if the adjustment member is slidably moved in another direction, then the magnetic head is adjusted in its azimuthal position in another direction. Thus, the magnetic head is accurately aligned in its azimuthal position by properly moving the slidable adjustment member.
摘要:
Crystalline solids A to E of biopterin are distinguished from each other by diffraction angle in an X-ray powder diffraction pattern measured using Cu—Kα radiation. The crystalline solid A is characterized by strong peak at 4.6° and peaks at 13.6°, 18.1° and 27.5°; the crystalline solid B is characterized by strong peak at 4.85° and peaks at 2.4°, 13.2°, 18.1° and 27.3°; the crystalline solid C is characterized by strong peak at 5.35° and peaks at 10.8°, 21.9° and 27.3°; the crystalline solid D is characterized by strong peak at 5.1° and peaks at 2.6°, 9.2°, 13.4°, 15.4°, 18.3°, 21.8° and 27.3°; and the crystalline solid E is characterized by strong peaks at 4.5° and 5.8°, and peaks at 10.6°, 15.6°, 20.0°, 20.7°, 23.8° and 27.3°.
摘要:
The present invention provides a method of separating ergosterol from a solution containing ergosterol in water-insoluble organic solvent, comprising supplying water to the solution and precipitating ergosterol. According to the method of the present invention, ergosterol crystals can be obtained at a high yield. Moreover, controlled water supply provides granular ergosterol aggregates exhibiting good solid-liquid separation character at a high yield.
摘要:
In a reproducing system, a reproducing start position of recording information is set in a first reproducing device reproducible in a second reproducing device. The reproducing start position set in the first reproducing device is stored in a detachable external storage medium. The external storage medium is detached from the first reproducing device, attached to a second reproducing device, and the reproducing start position stored in the external storage medium is read into the second reproducing device. Thus the reproducing start position set by the first reproducing device will be reproduced in the second reproducing device to control a location of selection, such as musical numbers.
摘要:
With respect to reduced coenzyme Q10, there has been no report about the presence of crystal polymorphism, and it has been considered that a conventionally obtained crystal form is only one form. The present invention relates to a reduced coenzyme Q10 crystal having an endothermic peak indicating melting at 54±2° C. during temperature rise at a rate of 5° C./min by differential scanning calorimetry (DSC), and/or to a reduced coenzyme Q10 crystal showing characteristic peaks at diffraction angles (2θ±0.2°) of 11.5°, 18.2°, 19.3°, 22.3°, 23.0° and 33.3° by powder X-ray (Cu—Kα) diffraction. The crystal form is a novel reduced coenzyme Q10 crystal which has a higher melting point and a lower solubility in a solvent, and is more excellent in stability than the conventionally known reduced coenzyme Q10 crystal.
摘要:
An isobutylene is polymerized in the presence of an aromatic initiator and a catalyst under the conditions that either a chlorinated hydrocarbon or an aromatic hydrocarbon is used singly or in admixture with an aliphatic hydrocarbon so that the reaction solution has a dielectric constant of 1 to 5 and a solubility parameter of 7.5 to 9.0.
摘要:
A disk player for use of playback of both of the single body of a digital optical disk and another digital optical disk encased in a cartridge by a single player. The disk player comprises a disk tray which is mounted on a main chassis and adapted to make its reciprocating movement in the fore-and-aft direction of the player to carry the single body of the disk to a predetermined position in the player. A cartridge carrier is mounted on a sub-chassis connected to and located above the main chassis and makes its reciprocating movement in the fore-and-aft direction to carry the cartridge encasing therein the disk to another predetermined position in the player. A mechanical chassis is tiltably connected to and located below the main chassis and movable upwardly and downwardly. A turntable is rotatably mounted on the mechanical chassis and driven by a motor supported to the mechanical chassis. Either one of the disks carried at the predetermined position is mounted on the turntable to be played back. An optical pickup is movably mounted on the mechanical chassis to pick a digital optical signal from the surface of the disk on the turntable.
摘要:
A disc player is shown which can play both a naked disc and a disc encased in a cartridge. A disc tray is movable on a single horizontal way to take at least first, second and third positions which are respectively the position for receiving or ejecting the naked disc, the position for practically playing the naked disc and the position which is distant from the second and third positions. When playing of the cartridge is intended, the disc tray is moved to the third position to permit the cartridge to take a loaded position at which the cartridge is practically played.