Abstract: A method of an IAB node may comprise: receiving an RRC message including measurement control information from a base station; transmitting RRC reconfiguration information including the measurement control information to each of a plurality of terminals; receiving a measurement report message including a measurement report generated by each of the plurality of terminals based on the measurement control information from each of the plurality of terminals; and grouping the measurement report messages received from the plurality of terminals into a grouped message report message, and transmitting the grouped measurement report message to the base station according to a grouped measurement reporting periodicity.

Abstract: A method of a terminal, according to an exemplary embodiment of the present disclosure, may include: requesting access to a mobile integrated access backhaul (IAB) based on cell search; receiving a tracking area (TA) update procedure stop request message from an Access and Mobility Management Function (AMF) of a core network; and deactivating a TA update procedure based on the TA update procedure stop request message.

Abstract: A method of an integrated access and backhaul (IAB) node may include: receiving, from a target base station, one or more user equipment (UE) context setup request messages including terminal radio resource reconfiguration information; sharing context information including the terminal radio resource reconfiguration information with a source IAB-distributed unit 1 (IAB-DU1); configuring terminal reconfiguration information using the shared context information; and transmitting one or more UE context setup response messages including the terminal reconfiguration information to the target base station in response to the one or more UE context setup request messages.

Abstract: A substrate transfer system capable of performing efficient distribution exchange between fabricating facilities is provided. The substrate transfer system includes a lower rail, an upper rail which is located above the lower rail from a ground plane, and extends to be parallel to the lower rail, a conveyor which extends to intersect the lower rail and the upper rail, below the lower rail, a first lower transport unit which transports a first carrier along the lower rail and unloads the first carrier onto the conveyor, and a first upper transport unit which transports a second carrier along the upper rail and unloads the second carrier onto the conveyor, wherein the conveyor includes a linear module which moves the first carrier and the second carrier in a linear direction, and a turning module which turns the first carrier and the second carrier.

Abstract: A non-consumable electrode welding system and a welding method thereof are disclosed. The non-consumable electrode welding method of the present invention includes a step of applying (+) or (?) polarity to a welding wire as a basic material and a filter metal and applying, to a non-consumable electrode rod, the polarity opposite to the polarity of the welding wire.

Abstract: The present invention relates to a TIG welding machine. The TIG welding machine according to the present invention includes: a torch unit (400) disposed with an electrode (632), a wire (634) and a weaving unit (410); a welding posture control unit (100) for controlling a welding posture by rotating the torch unit (400) vertically and horizontally so as to precede the torch unit (400) with reference to the advancing direction of the torch unit (400); a weld line tracing unit (200) mounted to the welding posture control unit (100) and detecting the placed state of a base metal for welding so as to trace a weld line; and a torch transfer unit (300) for moving the torch unit (400) based on the information of the weld line which has been traced in the weld line tracing unit (200).

Abstract: Disclosed is a chemical cleaning process for removing fouling from process lines of oil refining or petrochemical plants. The process lines are in an on-line state and a chemical cleaning agent is circulated through the process lines to remove the fouling. It can effectively recover the thermal efficiency in oil refining processes or petrochemical processes within a short period of time, so that significant energy consumption is reduced. Furthermore, the chemical cleaning process requires a shorter cleaning period and therefore allows for a longer operating time. It can also dislodge fouling without opening heat exchangers or other equipment thereby preventing the release of VOCs. As a result, environmental pollution is not generated. The present invention is also ecconomically favorable as it extends the time between periodic maintenance.

Abstract: Disclosed is a cleaning composition useful for dislodging fouling from process lines of oil refining or petrochemical plants and a cleaning method using the composition. The cleaning composition comprises 0.01 to 1 wt % of a C8 aromatic compound, 75 to 85 wt % of a C9 aromatic compound and 14 to 24 wt % of a C10 aromatic compound. When applied to the process lines, the composition is mixed at an amount of 2 to 20 vol % with Light cycle oil or light gas oil. Chemical cleaning with the composition effectively removes the fouling formed within the process lines and heat exchangers of oil refining or petrochemical plants, and recovers the processing capacity of heat exchangers to the start of run level, bringing about a significant economic profit.