Abstract: According to embodiments, a binder for a lithium secondary battery comprises a mixture of dextran and gallic acid obtained through physical stirring. As an example, the binder can be prepared by dissolving dextran in a solvent to form a dextran solution, adding gallic acid to the dextran solution, and, after the adding of the gallic acid to the dextran solution, physically mixing the dextran solution including the added gallic acid to form a mixture.

Abstract: An image sensor includes a substrate including a first surface on which light is incident and a second surface opposite to the first surface, unit pixels in the substrate, each including a photoelectric conversion layer, color filters on the first surface of the substrate, a grid pattern on the first surface of the substrate defining a respective light receiving area of each of the unit pixels, and microlenses on the color filters, each of the microlenses corresponding to a respective one of the unit pixels, wherein the unit pixels include a first pixel and a second pixel sharing a first color filter which is one of the color filters, and a first light receiving area of the first pixel is different from a second light receiving area of the second pixel.

Abstract: Provided are a system and method for controlling a workflow across domains on the basis of a hierarchical engine framework. Inventive workflow control makes it possible to configure a flexible hierarchical engine framework and provide a workflow service with low latency. Also, the system and method make it possible to control a workflow by building an engine and a data pipeline across domains.

Abstract: An apparatus of improving position accuracy of a Light Detection and Ranging (LIDAR) motor may include a motor that rotates at a rotation speed set by a user and a controller that generates a parameter depending on the rotation speed for determining a position of the motor within a preset horizontal angle of view and determines whether the motor is in a normal operation state and the position of the motor, based on the parameter.

Abstract: A magnetic sensor using a spin-orbit torque (SOT) and a sensing method using the same, include an SOT channel layer made of a heavy metal material, a ferromagnetic layer stacked on the SOT channel layer, and a protective layer stacked on the ferromagnetic layer, wherein an SOT is generated due to a current applied to the SOT channel layer to vary magnetization of the ferromagnetic layer, and the magnetic sensor which utilizes an SOT with a fast response speed and high sensitivity using a simplified metal thin film structure in which the SOT is generated is provided.

Abstract: A method of securing a home network system applied to an apartment building includes providing a home server connected to a network, a plurality of home network devices, a VPN server installed between the home server and the home network devices, and VPN gateways individually installed for the home network devices. The method also includes extracting an IP and a MAC address of a connected device using a local packet analyzer by means of VPN gateways. The method also includes detecting alteration of the IP or the MAC address of the connected device using a connection log table by means of the VPN gateways. The method also includes defining and blocking the connected device as an unauthorized device by means of a communication blocker of the VPN gateways when an alteration ratio of the IP or the MAC address of the connected device is a predetermined danger ratio or more.

Abstract: Disclosed is a collection net for restricting leakage current of an underwater motor implemented to restrict inflow of leakage current leaking from phase voltage lines of a three-phase power cable connected to the underwater motor into the human body by increasing the area of a neutral line of the three-phase power cable configured to apply power to the underwater motor, so as to prevent electrical shock accidents.

Abstract: An apparatus for predicting damage to a battery cell includes a battery module including a plurality of battery cells; a voltage sensor configured to measure a voltage of the battery cell; a temperature sensor configured to measure a temperature of the battery cell; a contactor configured to selectively connect or disconnect the battery module; and a processor configured to, in response to at least one of the voltage and the temperature being within a cell damage range for the battery cell, control the contactor to disconnect the battery module and calculate a weighting to determine a degree of damage to the battery cell based on the at least one of the voltage and the temperature.

Abstract: Disclosed is a cathode active material for a non-aqueous electrolyte secondary battery, wherein, when comparing volume versus particle size distribution (PSD) graphs before and after pressing under the following pressing condition, the condition of the following Equation 1 is satisfied at point A corresponding to a diameter of particles having a maximum occupied volume before pressing on an X-axis of the graph. [ Equation ? 1 ] Z = ( volume ? % ? of ? particles ? at ? point ? A ? after ? pressing / ? volume ? % ? of ? particles ? at ? point ? A ? before ? pressing ) × 100 Z ? 85 ? % [Pressing Condition] The active material is pressed at 4.5 tons per unit area (cm2).

Abstract: A separator for an electrochemical device; includes a polymer porous support and an inorganic composite porous layer formed on at least one surface of the porous support. The inorganic composite porous layer includes a binder polymer and an inorganic filler, the binder polymer includes an amorphous polymer having a glass transition temperature (Tg) of 180° C. or higher, the content of the inorganic filler is 30-200 parts by weight based on 100 parts by weight of the binder polymer, and the separator shows a dielectric breakdown voltage of 2 kV or more. The separator for an electrochemical device provides an electrochemical device with improved voltage resistance characteristics to realize a high dielectric breakdown voltage, and can provide a reduced short-circuit generation ratio (defect rate in a Hi-Pot test) even under a high voltage condition. An electrochemical device including the separator is also provided.

Abstract: A separator includes: a polymer porous support; and a coating layer disposed on at least one surface of the polymer porous support and containing a binder polymer, wherein the binder polymer includes a polyvinylidene fluoride-based polymer and a cyanoethylated polymer, and the coating layer has a surface roughness (Ra) ranging from 300 nm to 500 nm. The separator includes a coating layer formed non-uniformly on the polymer porous support, and thus, can provide an effect of improving the workability of a battery assembling process. A method for manufacturing the separator, and a lithium secondary battery including the separator, are also provided.

Abstract: Disclosed herein are a method for access control using real-time positioning technology and a device using the same. According to a positioning method of a positioning module, the positioning module is configured to measure a location of at least one location-unrecognized device and a location of a terminal, wherein the at least one location-unrecognized device, the terminal and at least one location-recognized device is located in a certain zone, and wherein the positioning module has coordinate information of the at least one location-recognized device and the positioning module has not coordinate information of the at least one location-unrecognized device.

Abstract: A composite separator for an electrochemical device, including: a porous polymer substrate having a plurality of pores; and a porous coating layer formed on at least one surface of the porous polymer substrate. The porous coating layer includes a plurality of particles and a binder positioned on at least a part of the surface of the particles to connect and fix the particles with one another. The particles include at least one of inorganic particles or organic particles, and the composite separator has a melt-down temperature of 170° C. or higher. An electrochemical device including the composite separator is also disclosed.

Abstract: The present invention relates to a lithium secondary battery which includes a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and an electrolyte solution, wherein a patterned gel polymer electrolyte layer is included on one surface or both surfaces of at least one structure of the positive electrode, the negative electrode, or the separator.

Abstract: A secondary battery reduces or prevents the likelihood of lifting or twisting by increasing the fixing force between an electrode plate and a separator of a stacked electrode assembly, and reduces or prevents the likelihood of damage to an electrode plate due to being pressed by a lower insulating member of a cap assembly. A secondary battery may include an electrode assembly including first and second electrode plates alternately stacked with a separator therebetween, a first current collector plate coupled to the first electrode plate, a case accommodating the electrode assembly and the first current collector plate, a cap plate coupled to the case, a first terminal contacting the first current collector plate, and having an upper end penetrating the cap plate, and an insulating tape covering upper and lower surfaces of the electrode assembly, fixing the electrode assembly, and extending along a longitudinal direction of the cap plate.

Abstract: A method for removing inorganic substances from wastewater is provided. The method includes: providing a fluidized bed reactor, wherein carriers are added into the fluidized bed reactor, and the carriers includes polyvinylidene fluoride (PVDF), ethylene tetrafluoroethylene (ETFE), alumina (Al2O3) with purity more than 95 wt %, or combinations thereof; introducing the wastewater containing the inorganic substances and a first reagent into the fluidized bed reactor; fluidizing the carriers in the fluidized bed reactor, and making the inorganic substances in the wastewater reacting with the first reagent to form crystals, wherein the crystals are formed on the outer surfaces of the carriers.

Abstract: The present invention relates to polyimide powder and a manufacturing method therefor. Being polymerized from diamine monomers and dianhydride monomers using graphene, the polyimide powder according to the present invention exhibits electroconductivity whilst having minimal reduction in tensile strength and elongation, and thus can be provided as a polyimide powder capable of preventing static electricity.

Abstract: The present disclosure relates to a portable X-ray imaging device. The portable X-ray imaging device includes an optical camera, a thermal image camera, a display unit, and a controller. The controller displays a real image captured by the optical camera and a thermal image captured by the thermal image camera by overlapping the real image and the thermal image. Accordingly, a user can perform more accurate X-ray imaging because the user can check an oral sensor in a real image of the face of a patient displayed on the display unit.

Abstract: Disclosed is a jack connection-type electrical connector with a leakage current restriction function implemented to restrict leakage current by increasing the area of a neutral line terminal of the electrical connector for branching power supplied from a power system to a load, so as to prevent electrical shock accidents.

Abstract: A hydrogen compression system includes an inner container made of a non-magnetic element and having a hydrogen inlet/outlet portion through which hydrogen flows in or out of the inner container, a metal hydride material accommodated in the inner container, an outer container configured to surround the inner container and having an inlet/outlet port through which hydrogen flows in or out of the outer container, and an induction heating unit disposed between the inner container and the outer container and configured to heat the metal hydride material by induction heating, thereby obtaining an advantageous effect of simplifying a structure and process for heating the metal hydride material and quickly heating the metal hydride material to an accurate temperature.