摘要:
In a fabrication machine of sea island type optical fiber having a plurality of wings by spinning, when a sea part polymer is insufficiently supplied into space between the adjacent wings to cause fusion of the adjacent wings, failing in producing an optical fiber having the desired optical characteristics. The present invention solved this problem. A guide member introduces the sea part polymer supplied from sea part polymer inlets into flow paths or slits between projection wings of a partition wall for a flow path control of an island part. A sufficient amount of sea part polymer is supplied to the space between the adjacent wings of an island part of the obtained optical fiber and an optical fiber having the desired optical characteristics can be obtained.
摘要:
Disclosed is a benzonitrile derivative which is useful as a production intermediate for benzylamine derivative represented by the general formula (5) below and s secondary amine derivative represented by the general formula (9) below. Also disclosed are a method for producing such a benzonitrile derivative and a use thereof as a bactericide. Specifically disclosed are a novel benzonitrile derivative represented by the general formula (1) below, a salt thereof, a production method thereof, and a use thereof as a pharmaceutical intermediate or a bactericide. [Chemical formula 1] (5) (In the formula, n represents an integer of 0-3, and R1 represents a hydrogen, a linear or branched alkyl group having 1-6 carbon atoms or the like.) [Chemical formula 2] (9) (In the formula, n and R1 are a defined above, and R4 represents a hydrogen, a linear or branched alkl group having 1-6 carbon atoms or the like.) [Chemical formula 3] (1) (In the formula, n represents an integer of 0-3, and R1 represents a hydrogen, a linear or branched alkyl group having 1-6 carbon atoms or the like.)
摘要:
There is provided a conductive grinding wheel 10 rotating centering on a vertical shaft center and including a horizontal working surface 10a, and the grinding wheel comprises a conductive base member 11 formed of an integrally molded flat plate, and a plurality of fan-shaped segments 12 detachably attached to the base member to entirely constitute the annular working surface. Each segment comprises a base metal 12a directly attached to the base member and a grinding wheel part 12b formed on the surface of the base metal. Moreover, the grinding wheel part comprises a recessed groove 14 for partitioning the working surface into a plurality of working areas 13, and an electrolytic fluid supply hole 15 for directly supplying the electrolytic fluid to the respective working areas, so that the electrolytic fluid is supplied to the respective electrolytic fluid supply holes through the base member.
摘要:
A laser apparatus for medical treatment use in which a laser beam is irradiated on a portion of a human body to be treated comprises a laser beam generation unit for generating a laser beam of giant pulse, a laser beam guide member having one end through which the laser beam from the laser beam generation unit is guided, and a hand piece attached to another end of the laser beam guide member and irradiating the laser beam to the portion to be treated. A beam converging point is formed within a laser beam propagating path formed in at least one of the light guiding means and the hand piece and a stay of air is prevented from a predetermined region in the laser beam propagating path including at least the beam converging point at which the air stays. The predetermined region is positioned within the hand piece or the laser beam guide member. The air stay is prevented by means of producing a vacuum state, gas seal state or air flow state in the predetermined region.
摘要:
Disclosed herein is curled or uncurled composite carbon fiber which comprises part of optically isotropic carbon fiber and balance of optically anisotropic one and a process for preparing the same. The composite carbon fiber possesses the excellent characteristics by complementing the respective defects by means of the respective characteristics of the both kinds of the carbon fiber.
摘要:
An azole derivative represented by the formula (I): ##STR1## wherein X and Y independently represent a halogen atom, a phenyl group or a hydrogen atom, providing that at least one of X and Y is not a hydrogen atom, n represents an integer of 0, 1 or 2, and A represents a nitrogen atom or CH, and an agricultural/horticultural fungicide comprising the azole derivative as an active ingredient are disclosed.The azole derivative exhibits an excellent effect in preventing and curing a wide spectrum of plant diseases and possesses low toxicity to mammals.
摘要:
Novel N-trichloroacetyl-N'-chlorobenzoylhydrazine derivatives, having the following formula: ##STR1## WHERE N STANDS FOR 1 OR 2, AND ESPECIALLY ADAPTED FOR USE AS FUNGICIDAL AGENT FOR AGRICULTURAL USE, AND PROCESS FOR MANUFACTURING SAME.
摘要:
Disclosed herein is a spinning nozzle having one or more discharge openings and one or more introduction openings located upstream the discharge openings for producing pitch-based carbon fibers characterized by the presence of one or more spiral members in each introduction openings. According to the nozzle of the present invention, part of the pitch which is introduced to the introduction opening flows down along the spiral member while the flow of the pitch is affected by the spiral member. The remaining pitch flows into the discharge opening without being in contact with the spiral member, and then both are spun after being mixed through the discharge opening to prepare carbon fibers having a random structure. Especially, the carbon fibers of higher performances can be prepared when a spiral having uneven outer diameters is employed.
摘要:
Disclosed herein are an azole derivative represented by the formula(I): ##STR1## wherein R.sup.1 and R.sup.2 respectively represent a (C.sub.1 -C.sub.5) alkyl group or a hydrogen atom; X represents a halogen atom, a (C.sub.1 -C.sub.5) alkyl group or a phenyl group; n represents an integer of from 0 to 2 and A represents a nitrogen atom or a CH, provided that R.sup.1 is not a hydrogen atom when R.sup.2 is a hydrogen atom, a process for producing the azole derivative represented by the formula(I), and an agricultural and horticultural composition containing the azole derivative represented by the formula(I).
摘要:
An azole derivative represented by the formula (I): ##STR1## wherein X and Y independently represent a halogen atom, a phenyl group or a hydrogen atom, providng that at least one of X and Y is not a hydrogen atom, n represents an integer of 0, 1 or 2, and a represents a nitrogen atom or CH, and an agricultural/horticultural fungicide comprising the azole derivative as an active ingredient are disclosed.The azole derivative exhibits an excellent effect in preventing and curing a wide spectrum of plant diseases and possesses low toxicity to mammals.