摘要:
An apparatus and method for controlling the position of the tongs of a crane depending on bending of a slab are disclosed. Side surface detection units are installed at both ends of the tongs of a crane for gripping the side surfaces of one or more slabs, and are configured to detect one or more gaps generated due to bending of one of the slabs. A distance detection unit is configured to detect the distance between an uppermost slab and the crane. A control unit is configured to adjust the final grip position of the tongs using information about the gaps generated due to the bending of the slab. The information about the gaps is detected by the side surface detection units and the distance detection unit.
摘要:
An apparatus and method for controlling the position of the tongs of a crane depending on bending of a slab are disclosed. Side surface detection units are installed at both ends of the tongs of a crane for gripping the side surfaces of one or more slabs, and are configured to detect one or more gaps generated due to bending of one of the slabs. A distance detection unit is configured to detect the distance between an uppermost slab and the crane. A control unit is configured to adjust the final grip position of the tongs using information about the gaps generated due to the bending of the slab. The information about the gaps is detected by the side surface detection units and the distance detection unit.
摘要:
A three-dimensional (3-D) non-volatile memory device according to embodiment of the present invention includes a plurality of bit lines, at least one string row extending in a first direction coupled to the bit lines and including 2N strings, wherein the N includes a natural number, a common source selection line configured to control source selection transistors of the 2N strings included in a memory block, a first common drain selection line configured to control drain selection transistors of a first string and a 2N-th string among the 2N strings included in a memory block, and N−1 second common drain selection lines configured to control drain selection transistors of adjacent strings in the first direction among remaining strings other than the first string and the 2N-th string.
摘要:
Provided are a method for preparing fine round powdery polycarbonate and a method for preparing a high molecular weight polycarbonate resin using the same.More specifically, provided are a method for preparing fine round powdery polycarbonate, comprising (A) polymerizing non-phosgene polycarbonate, (B) extruding the polycarbonate into fine round powdery amorphous polycarbonate, (C) surface-crystallizing the fine round powdery amorphous polycarbonate in the presence of a solvent or dispersion medium, and (D) drying the surface-crystallized fine round powdery polycarbonate, and a method for preparing high molecular weight polycarbonate resin capable of obtaining polycarbonates with various molecular weights ranging from low molecular weights to high molecular weights by continuously using the obtained fine round powdery polycarbonate via a solid state polymerization step. In accordance with the methods, it is possible to remarkably simplify crystallization of amorphous polycarbonate and thus to realize process continuousness and economical efficiency enabling commercial mass-production, and to overcome production of high molecular weight polycarbonate, the most serious problem of conventional non-phosgene melt polymerization processes.
摘要:
Disclosed is a thermoplastic polyolefin (TPO) nanocomposite composition, more particularly a TPO nanocomposite composition including a polypropylene resin, a polyethylene resin, a rubber resin, a nanoclay master batch and a glass bubble master batch. Since the disclosed TPO nanocomposite composition has low specific gravity and superior gloss reducing effect and scratch resistance, it may be usefully applied to light automobile parts, uncoated automobile exterior parts, or the like.
摘要:
Naphthylcarbazole derivatives are provided. The naphthylcarbazole derivatives are represented by Formula 1. Further provided are KL host materials, organic electroluminescent devices employing the host materials, and displays and lighting systems comprising the devices.
摘要:
A three-dimensional (3-D) non-volatile memory device according to embodiment of the present invention includes a plurality of bit lines, at least one string row extending in a first direction coupled to the bit lines and including 2N strings, wherein the N includes a natural number, a common source selection line configured to control source selection transistors of the 2N strings included in a memory block, a first common drain selection line configured to control drain selection transistors of a first string and a 2N-th string among the 2N strings included in a memory block, and N−1 second common drain selection lines configured to control drain selection transistors of adjacent strings in the first direction among remaining strings other than the first string and the 2N-th string.
摘要:
Provided are a method for preparing fine round powdery polycarbonate and a method for preparing a high molecular weight polycarbonate resin using the same.More specifically, provided are a method for preparing fine round powdery polycarbonate, comprising (A) polymerizing non-phosgene polycarbonate, (B) extruding the polycarbonate into fine round powdery amorphous polycarbonate, (C) surface-crystallizing the fine round powdery amorphous polycarbonate in the presence of a solvent or dispersion medium, and (D) drying the surface-crystallized fine round powdery polycarbonate, and a method for preparing high molecular weight polycarbonate resin capable of obtaining polycarbonates with various molecular weights ranging from low molecular weights to high molecular weights by continuously using the obtained fine round powdery polycarbonate via a solid state polymerization step. In accordance with the methods, it is possible to remarkably simplify crystallization of amorphous polycarbonate and thus to realize process continuousness and economical efficiency enabling commercial mass-production, and to overcome production of high molecular weight polycarbonate, the most serious problem of conventional non-phosgene melt polymerization processes.
摘要:
Naphthylcarbazole derivatives are provided. The naphthylcarbazole derivatives are represented by Formula 1. Further provided are KL host materials, organic electroluminescent devices employing the host materials, and displays and lighting systems comprising the devices.
摘要:
Disclosed herein are a spalling-preventing composite material composed of fiber and powder, which have different diameters and melting points so as to be capable of realizing the effect of preventing spalling of high-strength concrete and the effect of improving the fluidity of concrete, and a high-strength refractory concrete comprising the spalling-preventing material. The composite material for preventing spalling of high-strength concrete is composed of powder and fiber at 1:1-3, wherein the powder is a polymer powder having a diameter of 0.10-0.5 mm and a melting point of 110-150° C., and the fiber is a conjugate fiber including a first fiber having a diameter of 0.05-0.10 mm, a length of 5-25 mm and a melting point of 150-190° C., and a second fiber having a diameter of 0.01-0.05 mm, a length of 5-25 mm and a melting point of 190-250° C., the first fiber being a polypropylene fiber, and the second fiber being a nylon fiber or a polyvinyl alcohol fiber.