摘要:
The present invention relates to a reference-current optimizing apparatus of a double relaxation oscillation SQUID. According to the present invention, the optimizing apparatus is connected to a RJ-DROS in order to vary a reference current. Accordingly, the DROS can have a high response level and can operate stably, by controlling a magnetic flux-voltage conversion characteristic. Furthermore, when the RJ-DROS is fabricated, reference junctions having different critical currents are controlled to have the same reference current. Therefore, the reference junctions can have the same magnetic flux-voltage characteristic. In addition, a preamplifier having a plurality of junction bipolar transistors serves to prevent an input application current of the preamplifier from flowing into the optimizing apparatus when the output of a reference junction is detected. This enables the DROS to operate normally.
摘要:
Disclosed is an apparatus and method for making an automotive bumper beam by a single roll forming. The apparatus of the present invention comprises an uncoiler; a straightener; a brake press; a first group of roll formers; a second group of roll formers; a final sweep roll former; adjuster; welding member; and cutting member. The method of the present invention is comprising of a step of preparing the steel sheet; a step for forming the tubular cross-sectional shape on the steel sheet; a step for forming a sweep on the steel sheet; a step for adjusting the tubular cross-sectional shape of the steel sheet; a step for welding two flanges to each other at their terminal ends; and a step for cutting the steel sheet to the predetermined length. The bumper beam manufactured according to the present invention has the tubular cross-sectional shape comprising the front wall having an central indented portion, the top and bottom walls, the upper and lower rear walls, and the upper and lower inner walls having respective flanges, by a single roll forming process.
摘要:
Provided is an apparatus and method for iteratively detecting and decoding a received signal in a wireless communication system. An apparatus for iterative detection and decoding (IDD) in a wireless communication system may determine a predetermined group to be updated in a first soft decision sequence, may transmit detection control information of the determined group, and may generate a second soft decision sequence based on a detection operation result of a predetermined received signal portion that is extracted based on the detection control information.
摘要:
A system for acquiring data of a multi-channel signal includes a channel-voltage transmission module disposed in a shield room blocking electromagnetic waves, connected with a plurality of channels from which analog signals are output, and configured to generate a serial digital signal having information about an analog signal and information about a channel from which the analog signal is output, and an optical fiber cable through which the serial digital signal is transmitted from the channel-voltage transmission module to the outside of the shield room.
摘要:
The present invention relates to an amine bridged metallocene catalyst, a method for producing the same, and a method for producing an ethylene-alpha olefin copolymer, which comprises polymerizing ethylene and alpha olefin in the presence of an olefin polymerization catalyst composition including a metallocene catalyst. The amine bridged metallocene catalyst may be produced by reacting one or more of substituted or unsubstituted cyclopentadiene and substituted or unsubstituted fluorene with amine to bridge them with nitrogen, and reacting them with a transition metal to coordinate them.
摘要:
An apparatus and method for obtaining information on Bluetooth devices in a computing device using Bluetooth are provided. The method includes, if an Inquiry Response (IR) packet is received as a response to an inquiry packet, obtaining information on a first Bluetooth device transmitting the IR packet and determining whether a supplementary response indication field is enabled and, if the supplementary response indication field is enabled, receiving an Extended Inquiry Response (EIR) packet, and obtaining information on at least one Bluetooth device other than the first Bluetooth device through the EIR packet.
摘要:
The present invention provides a method for preparing a supported metallocene catalyst, a supported metallocene catalyst prepared by the method, and a method for preparing a polyolefin using the supported metallocene catalyst. The supported metallocene catalyst according to the present invention contains catalyst components uniformly distributed deep into the whole porous carrier particles to secure a high catalytic activity and facilitates polymerization of polyolefins with high bulk density.
摘要:
A low-noise cooling apparatus is provided. The cooling apparatus includes an outer container and an inner container. A thermal insulation layer in a vacuum state is disposed between the outer container and the inner container. The inner container includes a Dewar containing a liquid refrigerant, a prepolarization coil arranged inside the inner container and immersed in the liquid refrigerant, a pick-up coil immersed in the liquid refrigerant, and a superconducting quantum interference device (SQUID) electrically connected to the pick-up coil and immersed in the liquid refrigerant. The prepolarization coil is made of a superconductor.
摘要:
The present invention relates to a novel metallocene compound, a catalyst composition comprising the same, and to olefinic polymers produced using the same. The metallocene compound according to the present invention and the catalyst composition comprising the same can be used when producing olefinic polymers, have outstanding copolymerisation properties, and can produce olefinic polymers of high molecular weight. In particular, when the metallocene compound according to the present invention is employed, highly heat resistant block copolymers can be produced, and olefinic polymers can be produced which have a high melting point (Tm) even if the comonomer content is increased when producing the olefinic polymer.