Abstract: A leak diagnosis system for a humidifier of a fuel cell system includes a fuel cell stack including a cathode and an anode, an air supply system including at least one of an air compressor, an air cutoff valve, and an air pressure control valve, a hydrogen supply system including at least one of a hydrogen supply valve and a hydrogen purge valve, a humidifier that humidifies air flowing into the cathode, and a controller that maintains airtightness of the cathode, purges hydrogen on a side of the anode, and then releases the airtightness of the cathode to diagnose whether a leak has occurred in the humidifier.

Abstract: A display device includes: a panel assembly including a display panel; a bracket to which the panel assembly is attached; and a buffer layer between the panel assembly and the bracket, and the buffer layer includes: a first portion having a first elastic modulus; and a second portion surrounded by the first portion and having a second elastic modulus that is less than the first elastic modulus.

Abstract: Storage devices, methods of operating storage devices, and computing systems including storage devices are disclosed. In an embodiment, a storage device may include a plurality of memory devices and a memory controller for controlling the plurality of memory devices to process a request of a host in accessing plurality of memory devices, wherein the memory controller is configured to allocate the plurality of memory devices to a plurality of functions, allocate a plurality of request slots allowed to process the request per unit time for each of the plurality of functions, determine idle request slots other than active request slots being used to process the request among the plurality of request slots allocated to each of the plurality of functions, and control an internal operation of the plurality of memory devices based on at least one target function including the idle request slots among the plurality of functions.

Abstract: A memory system includes a first semiconductor memory device, a second semiconductor memory device, and a controller for controlling operations thereof. Each of the first and second semiconductor memory devices includes a normal area and a preliminary area. The controller is configured to determine a data migration operation on target data stored in the first semiconductor memory device and in response thereto control the first semiconductor memory device to read the target data, generate migration data including a plurality of group migration complete data indicating that the data migration operation has been partially completed based on the target data, and control the second semiconductor memory device to program the migration data in the preliminary area of the second semiconductor memory device.

Abstract: A cathode active material for a lithium secondary battery including a lithium-transition metal composite oxide particle is provided. A crystal grain size of the lithium-transition metal composite oxide particle measured by an XRD analysis is 250 nm or more, and an XRD peak intensity ratio of the lithium-transition metal composite oxide particle is 9.8% or less. A lithium secondary battery including the lithium-transition metal composite oxide particle and having improved life-span and rate capability is provided.

Abstract: A system and method for providing meal order, preparation and delivery service includes an order receiving unit for receiving an order for a meal selected from a plurality of offered meals of different types, a meal storage and preservation unit for storing and preserving the meal before preparation, a meal preparation unit for preparing the meal, and an output part for outputting the meal prepared with the meal preparation unit. A container for containing the meal therein is configured such that the meal can be stored, preserved, prepared and dispensed by the meal storage and preservation unit, the meal preparation unit, the output part, respectively, while the meal is contained in the container. A robotic device includes a manipulator for moving the container is arranged so each of the meal storage and preservation unit, the meal preparation unit and the output part are within the operating range of the manipulator.

Abstract: Provided are a die pickup module and a die bonding apparatus including the same. The die pickup module includes a wafer stage for supporting a wafer including dies attached on a dicing tape, a die ejector arranged under the dicing tape and for separating a die to be picked up from the dicing tape, a non-contact picker for picking up the die in a non-contact manner so as not to contact a front surface of the die, a vertical driving unit for moving the non-contact picker in a vertical direction to pick up the die and an inverting driving unit for inverting the non-contact picker to invert a die picked up by the non-contact picker.

Abstract: A cathode active material for a lithium secondary battery including a lithium-transition metal composite oxide particle is provided. A crystal grain size of the lithium-transition metal composite oxide particle measured by an XRD analysis is 250 nm or more, and an XRD peak intensity ratio of the lithium-transition metal composite oxide particle is 9.8% or less. A lithium secondary battery including the lithium-transition metal composite oxide particle and having improved life-span and rate capability is provided.

Abstract: A lithium secondary battery comprises a cathode, an anode, a separator and a nonaqueous electrolyte solution. The cathode includes a first cathode active material in which at least one of metals included in the first cathode material has a concentration gradient region between a central portion and a surface portion, and a second cathode active material having a single particle structure. The lithium secondary battery has improved life-span and penetration stability.

Abstract: The present disclosure provides a system and a method for guiding hydrogen charging, which may estimate a remaining hydrogen chargeable amount (remaining hydrogen storage amount), a charging time, and the like of a hydrogen charging station, and provide the estimated information to another vehicle to be charged through an Internet network when a driver charges hydrogen in a hydrogen tank of his/her fuel cell vehicle at the hydrogen charging station, such that the driver of the vehicle to be charged may recognize a maximum chargeable amount and a required charging time for a hydrogen tank of a vehicle to be charged for each hydrogen charging station, thereby allowing the fuel cell vehicles to visit the hydrogen charging station and smoothly charge hydrogen.

Abstract: Provided is a lubricating composition for inhibiting plugging including a base oil and any one selected from a fatty acid and an emulsifier, with the lubricating composition forming a single phase even when a carboxylic acid-based monomer is introduced with respect to the base oil. The lubricating composition suppresses plugging occurring in a process of preparing a copolymer derived from the carboxylic acid-based monomer. In addition, also provided is a method of inhibiting plugging using the lubricating composition for inhibiting plugging.

Abstract: The present disclosure provides a multi-parameter calibration system for a spectrometer based on a nanosecond light source, including a main channel for outputting nuclear pulse signals, and a coincidence channel for outputting the nuclear pulse signals. Each channel uses current nuclear pulse signals to drive a light-emitting diode (LED) to emit nuclear pulse optical signals, and a simulated scintillator is irradiated to emit nanosecond nuclear pulse optical signals. The present disclosure can respectively test and calibrate multiple parameter performance indexes of the spectrometer throughput baseline restoration spectrometer. The stability of the spectrometer is tested and calibrated through output of certain regular nuclear pulse signals.

Abstract: An apparatus for classifying heart disease using a MobileNet according to an embodiment of the present invention may comprise: an input unit for receiving a time-domain electrocardiogram signal; a wavelet transform unit for transforming the timedomain electrocardiogram signal into a frequency-domain electrocardiogram signal by using a wavelet transform; and a neural network for classifying the frequency-domain electrocardiogram signal as one of atrial fibrillation (AFIB), left bundle branch block beat (LBBB), normal sinus rhythm (NSR), or premature ventricular contraction (PVC), wherein the neural network may be a MobileNet trained using a training data set.

Abstract: A thin film transistor, a manufacturing method of the thin film transistor and display apparatus including the thin film transistor are provided. The thin film transistor comprises an active layer and a gate electrode that partially overlaps the active layer, wherein the active layer includes a channel portion, a first connection portion contacting one side, namely a first side, of the channel portion and a second connection portion spaced apart from the first connection portion and contacting the other side, namely a second side of the channel portion, wherein the channel portion includes a first channel part overlapping the gate electrode and a second channel part not overlapping the gate electrode.

Abstract: A cathode active material for a lithium secondary battery according to an embodiment of the present invention includes a lithium composite oxide particle that contains lithium and transition metals including an excess amount of nickel. The lithium composite oxide particle satisfies a predetermined XRD peak area relation. A lithium secondary battery using the cathode active material and providing improved stability and durability is provided.

Abstract: A cathode active material for a lithium secondary battery includes a lithium-transition metal oxide particle having a shape of a single particle and having a Mn oxidation number ratio of 0.23 or less. The Mn oxidation number ratio is calculated from a deconvolution of a Mn2p spectrum of the lithium-transition metal oxide particle by an X-ray photoelectron spectroscopy (XPS) analysis.

Abstract: An ion detection sensor fabrication method includes: preparing an ion-sensitive film preparation solution; preparing an ion-sensitive mixed layer preparation solution by mixing the ion-sensitive film preparation solution with graphene powder; and forming an ion-sensitive mixed layer sensitive to a target ion by applying the ion-sensitive mixed layer preparation solution to fill a gap between a source and a drain spaced apart from each other and to cover at least a portion of an upper surface of each of the source and the drain.

Abstract: The present disclosure belongs to the technical field of artificial cardiac pacemakers, and particularly relates to a leadless left-bundle-branch pacemaker. The leadless left-bundle-branch pacemaker comprises a case and an implant core, wherein the implant core is coaxially arranged inside the case, and a head of the implant core can be rotated out from the inside of the case; the implant core has an implant end that can be rotated out from the inside of the case, and the length of the implant end rotated out from the inside of the case is greater than 10 mm; and an end of the case corresponding to the implant end is provided with a fixing end for fixing the pacemaker.

Abstract: The thin film transistor, fabrication method thereof, and display apparatus comprising the same are provided. The thin film transistor comprises a base substrate, an oxide semiconductor layer on the base substrate, a channel protection layer in contact with the oxide semiconductor layer, and a gate electrode spaced apart from the oxide semiconductor layer and at least partially overlapped with the oxide semiconductor layer, and the channel protection layer includes carbon.

Abstract: A lithium secondary battery according to an embodiment of the present invention includes an electrode assembly including a separation layer, and a plurality of cathodes and a plurality of anodes separated by the separation layer and repeatedly stacked, and a gas adsorption layer coated on a single surface of an outermost anode among the plurality of anodes.