摘要:
A pickup unit for use in an optical information record/reproduce system comprising a plurality of optical elements including a light-emitting device and an objective lens by which the light issuing from the light-emitting device is focused as a beam spot on the recording surface of a recording medium, a retaining mechanism that holds the plurality of optical elements and which is movable in a direction parallel to the recording surface, and a tilt servo mechanism for causing the optical axis of the beam spot to intersect the recording surface at right angles. The tilt servo mechanism includes a sensor for detecting the angle of inclination of the optical axis in relation to the recording surface. The sensor has a sensor stay as an integral part thereof. The sensor stay is provided as an integral part of the retaining mechanism and is movable with respect to the recording surface.
摘要:
A method for producing a polyurethane resin which comprises reacting: (A) a compound having an active hydrogen-containing group, containing: (A1) a compound having one spiro ring and active hydrogen-containing groups at both ends; and (A2) an aliphatic polycarbonate polyol; (B) a polyisocyanate; and (C) a chain-extending agent. Also disclosed are a resin composition comprising the polyurethane resin and a sheet-form article comprising the poylurethane resin or the resin composition.
摘要:
A luminescence method for a luciferin/luciferase system which comprises reacting a luciferin solution containing an increased amount of dissolved carbon dioxide with luciferase; and a luciferase assay reagent comprising a luciferin solution containing an increased amount of dissolved carbon dioxide. Thus, a method of luminescent assay excellent in continuity and stability is provided as a substitute for the conventional luminescent luciferase assay featured by rapidity and high sensitivity.
摘要:
Disclosed is a gap junction inhibitor which is more practically useful compared with carbenoxolone. Also disclosed is a novel glycyrrhetinic acid derivative. The glycyrrhetinic acid derivative is represented by general formula (1) or (2).
摘要:
An one-piece dental probe made of light condensing fluorescent plastic comprising a handle, a distal portion and a measuring needle for measuring and exploring blind gum pockets is provided. The measuring needle has at least one visible measurement gradation for measuring the depth of the blind pocket. Light collected at the distal end of the probe is reflected through the probe and illuminates the vicinity of the blind pocket, thus enabling accurate measurement of the depth of the blind pocket in low-light conditions. The tip of the measuring needle may be hemispherical, and form an annular ledge around the needle for probing the existence and location of tartar and other foreign matters in the blind pocket.
摘要:
A measuring device for measuring the depth of a blind pocket formed around a tooth. A first embodiment of the measuring device has a measuring probe of optical material, such an optical fiber or rod, that has light-emitting notches or grooves near the probe tip, the notches being spaced to form a rule. The probe can be coupled to a light source, such as a penlight which can also be used as handle. The measuring probe is provided with an optical path to conduct light from the light source to the light-emitting ruler markings. A second embodiment of the measuring device has a measuring probe with a tapered tip formed by a staircase bundle of optical fibers covered by a transparent sheath. When light is introduced into a light source end of the staircase bundle of optical fibers, the opposite end in the probe's tapered tip is illuminated in a staircase pattern that can be used as rule.
摘要:
Disclosed is a gap junction inhibitor which is more practically useful compared with carbenoxolone. Also disclosed is a novel glycyrrhetinic acid derivative. The glycyrrhetinic acid derivative is represented by general formula (1) or (2).
摘要:
A testing apparatus of IC devices, comprising: a loader portion (10) for mounting a predetermined number of the IC devices (5) on each of test boards (1) transferred on a horizontal reference plane (H); a pre-heat portion (11) for receiving the test boards transferred on the horizontal plane from the loader portion and so as to bringing the IC devices mounted thereon into a predetermined temperature condition; a testing/measuring portion (12) having test heads (18) and for performing testing/measuring on the IC devices mounted on the test boards; a defroster portion (13) for receiving the test boards transferred from the testing/measuring portion and for bringing the IC devices completed with testing/measuring thereon into other predetermined temperature condition; and an unloader portion (14) for receiving the test boards transferred on the horizontal reference plane (H) from the defroster portion so as to unload the IC devices from the test boards depending on test results obtained in the testing/measuring portion, wherein each of the test boards is constructed to holds the IC devices mounted thereon when it is in a vertical standing condition, and further in the testing/measuring portion is provided a contact/separate means (60) for bringing two (2) of the test boards standing in vertical condition in upper and lower positions with respect to the horizontal reference plane (H), into contact with or separate from the test heads (18), simultaneously.