Abstract: An ohmic electrode for an SiC semiconductor includes a p-type Si layer formed on the surface of a p-type SiC semiconductor, and a metal silicide layer formed on the surface of the Si layer, the metal silicide layer being formed from a metal silicide such as PtSi. The p-type Si layer is preferably formed from p-type Si having a carrier concentration equal to or higher than that of the aforementioned p-type SiC. Preferably, the ohmic electrode is formed as follows: deposition of Si is performed; deposition of a metal silicide is performed by means of laser ablation; laser irradiation is performed to thereby improve ohmic properties and enhance adhesion between the resultant deposition layer and the p-type SiC semiconductor; and then further deposition of the metal silicide is performed by means of laser ablation.

Abstract: A gas sensor having a pn junction including two discrete electrical conductive-type layers, namely, a first semiconductor layer and a second semiconductor layer, disposed in contact with each other. Ohmic electrodes are formed on the respective surfaces of the semiconductor layers. A catalytic layer containing a metallic catalytic component which dissociates hydrogen atom from a molecule having hydrogen atom is formed on one of the ohmic electrodes. The pn junction diode-type gas sensor has a simple constitution, exhibits a small change in diode characteristics with time in long-term service and is capable of detecting a gas concentration of a molecule having a hydrogen atom, for example, H2, NH3, H2S, a hydrocarbon and the like, contained in a sample gas.

Abstract: A winder-to-double twister connecting system, which comprises a yarn end picking device for picking out a yarn end from a package set on a tray, a package lifter for inserting a two-piled empty bobbin mounting adapter received from an overhead conveyor, into the tray on a circulating conveyor line, and for transferring a two-piled package mounting adapter to the overhead conveyor; a bobbin mover for pulling off, from an adapter, an empty bobbin coming on the circulating conveyor line; a package loader for taking up the package with the yarn end picked out from the tray and mounting the package to the adapter; and a bobbin stripper for removing remaining yarn from the empty bobbin received from the bobbin mover.

Abstract: A winder-to-double twister connecting system, which comprises a yarn end picking device for picking out a yarn end from a package set on a tray, a package lifter for inserting a two-piled empty bobbin mounting adapter received from an overhead conveyor, into the tray on a circulating conveyor line, and for transferring the two-piled package mounting adapter to the overhead conveyor; a bobbin mover for pulling off, from an adapter, an empty bobbin coming on the circulating conveyor line; a package loader for taking up the package with the yarn end picked out from the tray and mounting the package to the adapter; and a bobbin stripper for removing remaining yarn from the empty bobbin received from the bobbin mover.

Abstract: A package storing apparatus wherein a belt conveyor is provided adjacent to a package storehouse provided with a number of placing shelves on which a package erected on a tray is placed. A package transfer device for transferring a package between the package storehouse and the belt conveyor comprises a fluid-pressure actuator arranged in a vertical direction, a rack connected with the fluid-pressure actuator and reciprocated thereby, a transfer sack connected with the sack by a driving force transmitting device, and a hook for holding the tray, which is provided on a support rod secured to the transfer sack.

Abstract: A yarn end finding apparatus for a spinning bobbin comprising a lifting member capable of moving along the axis of a bobbin located at a predetermined position, a sensor provided on the lifting member, and an auxiliary yarn end finding member which acts on a chase of the bobbin when the sensor detects the end of the yarn layer of the bobbin.

Abstract: A system of controlling the winding operation of an automatic winder which includes a yarn joining device and a yarn cutting device disposed along the yarn running passage between a package and a spinning bobbin, comprising steps of cutting the yarn in response to a full-package signal, executing a yarn joining operation, and providing a doffing signal to instruct the relevant mechanism to execute doffing operation.

Abstract: A method for recovering and utilizing heat of coke-oven gas, which comprises: through heat exchange with a high-temperature coke-oven gas generated from a coke oven battery and containing vaporized coal tar, vaporized low boiling point substances and dust, drying and preheating a blended raw material coal fine to be charged into coking ovens of said coke oven battery, and, on the other hand, causing most of said coal tar contained in said coke-oven gas to condense and deposit onto the particle surfaces of said coal fine during the process of said heat exchange, thereby recovering and utilizing sensible heat and condensation heat of said coke-oven gas and substances contained therein, and at the same time, eliminating most of the contained coal tar from said coke-oven gas.

Abstract: A plurality of different types of raw material coal fines are sieved to a size not exceeding 1.5 mm; said sieved raw material coal fines are blended so as to satisfy the following conditions:(a) AP index: 75 at the minimum,(b) Mean maximum reflectance: 1.20% at the minimum, and(c) A [dilatation] - [contraction] value of from -2 to +5% when carbonized under conventional conditions in a horizontal type coke oven battery at a heating rate of 5.degree. C/min. (350.degree. - 600.degree. C);said blended raw material coal fines thus obtained are mixed with a binder and formed to produce a formed coal; and then, said formed coal thus obtained is charged into a horizontal type coke oven battery and carbonized, whereby a high-strength formed coke for blast furnace is a slight mutual agglomeration is manufactured.

Abstract: With the use of low-fluidity blended raw material coal fines having a maximum fluidity of up to 20 d.d.p.m. as an inner core material, and coal fines having a maximum fluidity of at least 30 d.d.p.m. or a bituminous material having a C/H ratio of from 0.7 to 1.9 as an outer envelope material, green composite briquettes are formed by covering said inner core material with said outer envelope material. Said green composite briquettes thus formed are charged into a conventional coke oven battery and carbonized by an ordinary process, whereby a high-strength metallurgical formed coke in a slight mutual agglomeration is produced.