Abstract: A semiconductor memory device includes a first substrate including a first region and a second region, a stacked structure only on the first region of the first substrate among the first region and the second region of the first substrate, the stacked structure including word lines, an interlayer insulating film covering the stacked structure, a dummy conductive structure inside the interlayer insulating film, the dummy conductive structure extending through the stacked structure to contact the first substrate, and a plate contact plug inside the interlayer insulating film, the plate contact plug being connected to the second region of the first substrate, and a height of an upper surface of the dummy conductive structure being greater than a height of an upper surface of the plate contact plug relative to an upper surface of the first substrate.

Abstract: An automated gas supply system includes a gas cylinder transfer unit configured to transfer a cradle in which one or more gas cylinders storing a gas therein are stored; a gas cylinder inspection unit configured to check properties of the gas stored in the gas cylinder transferred from the gas cylinder transfer unit and check whether the gas leaks from the gas cylinder; a storage queue configured to receive the gas cylinder from the gas cylinder inspection unit by a mobile robot and configured to classify and store the transferred gas cylinders according to the properties of the gas stored in the gas cylinder; and a gas cabinet configured to receive the gas cylinder from the storage queue by the mobile robot and fasten a gas pipe, which is connected to a semiconductor manufacturing process line, to a gas spray nozzle, which is disposed at one side of the received gas cylinder, to supply the gas stored in the gas cylinder to the semiconductor manufacturing process line, wherein the gas cabinet includes a resid

Abstract: Disclosed are a method and apparatus for reusing wastewater. The method for reusing wastewater disclosed herein includes: generating a mixed wastewater by mixing multiple types of wastewater (S20); performing a first purification by passing the mixed wastewater through a flocculation-sedimentation unit (S40); performing a second purification by passing an effluent of the flocculation-sedimentation unit through a membrane bioreactor (MBR) (S60); performing a third purification by passing an effluent of the MBR through a reverse-osmosis membrane unit (S80); and reusing an effluent of the reverse-osmosis membrane unit as cooling water or industrial water (S100).

Abstract: The present invention provides an electronic device comprising a battery terminal (240) for coupling the electronic device (100) to a battery (280), a battery temperature terminal (242) for providing a battery temperature signal indicative of a temperature of the battery, a switch (210) selectively providing bi-directional coupling of a charging input (275) to the battery terminal (240), a power supply feed line ((B+)) coupling the charging input to at least one module (103, 102) of the electronic device (100), a diode (212, 220) providing continuous one way coupling from the battery terminal (240) to the power supply feed line ((B+)), a battery charging detector (235) having charging detect output (237), and a controller (230) having a control output (233) coupled to a control switch input (216) of the switch (210) and inputs coupled to both the battery temperature terminal (242) and the charging detect output (237), wherein in use the controller (230) open circuits the switch (210) in response to both recei

Abstract: A device for attaching a earphone key to an earphone-microphone used for a portable phone and performing communication operations and a method therefor.