Abstract: The present disclosure relates to a cell culture medium composition and a preparation method therefor. By replacing an animal serum with a Spirulina hydrolysate, cell growth can be induced and cell proliferation can be promoted to a level greater than or equal to that of a medium containing an animal serum, while significantly reducing the added amount of animal serum.

Abstract: The present disclosure provides a resource-circulation-type and eco-friendly livestock manure treatment method, and a system for producing algal biomass used therein, the method being capable of: preventing water pollution while allowing livestock liquid fertilizer to be treated on the basis of a biological process; producing algal biomass; and supplying the produced algal biomass to livestock feed and farms.

Abstract: A multilayer capacitor includes a body including a plurality of dielectric layers and a plurality of internal electrodes stacked in a first direction, and external electrodes, wherein the body includes an active portion, a side margin portion covering at least one of a first surface and a second surface of the active portion opposing each other in a second direction, and a cover portion covering the active portion in the first direction, respective dielectric layers among the plurality of dielectric layers include a barium titanate-based composition, the dielectric layer of the side margin portion includes Sn, and a content of Sn in the dielectric layer of the side margin portion is different from that of Sn in the dielectric layer of the active portion, and the dielectric layer of the side margin portion includes at least some grains having a core-shell structure.

Abstract: Proposed are a substrate processing apparatus and a substrate processing method capable of efficiently preventing contamination of a substrate and a processing space caused by a reverse flow of purge gas.

Abstract: Provided is a sensor patch configured to be attached to the skin of a user. The sensor patch may include: at least one opening; and a frame surrounding the at least one opening, wherein the frame may include at least one senor configured to measure a biosignal of the user. Therefore, since the at least one sensor for measuring a biosignal is provided on the frame surrounding at least one opening, it may be possible to continuously obtain a biosignal of the user for a long period of time.

Abstract: Provided is a sensor patch configured to be attached to the skin of a user. The sensor patch may include: at least one opening; and a frame surrounding the at least one opening, wherein the frame may include at least one senor configured to measure a biosignal of the user. Therefore, since the at least one sensor for measuring a biosignal is provided on the frame surrounding at least one opening, it may be possible to continuously obtain a biosignal of the user for a long period of time.

Abstract: Provided are a method of producing a nanoparticle device and a nanoparticle device. The method of producing a nanoparticle device may be economical due to use of a hydrogel, may be easy to design in terms of mass production processes, and may reduce manufacturing times to 1/100 to 1/10 of the technology of the related art. In addition, a nanoparticle device may be produced in various designs by stably realizing a 3D pattern and pattern stacking, and may have highly uniform nanoparticle dispersion and excellent electrical activity through the removal of a surfactant without damaging the pattern. The nanoparticle device produced according to the production method may have excellent electrical activity due to nanoparticle uniformity pattern accuracy and thus may be applied to pattern stacking which could not be implemented by methods of the related art.

Abstract: There is provided a multi power supply apparatus for driving light emitting diodes that is synchronized with a frequency of one output power of multi output power to control a switching of the multi output power and simplifies power conversion in supplying power for driving light emitting diodes.

Abstract: A power supply device for driving a light emitting diode (LED) capable of controlling the switching of multiple output powers, in synchronization with the frequency of one of the multiple output powers and simplifying a power conversion stage in supplying power for driving an LED.

Abstract: The present invention provides an LED driving circuit including: an inverter unit for switching an input power source; a plurality of transformers including a plurality of primary windings connected to the inverter unit and connected to each other in series and a plurality of secondary windings each of which is coupled with each of the primary windings; a plurality of rectification units each of which is connected to each of the secondary windings; and a plurality of LEDs each of which is connected to each of the rectification units.

Abstract: A power supply device for driving a light emitting diode (LED) capable of controlling the switching of multiple output powers, in synchronization with the frequency of one of the multiple output powers and simplifying a power conversion stage in supplying power for driving an LED.

Abstract: There is provided a multi power supply apparatus for driving light emitting diodes that is synchronized with a frequency of one output power of multi output power to control a switching of the multi output power and simplifies power conversion in supplying power for driving light emitting diodes.

Abstract: The present invention provides an LED driving circuit including: an inverter unit for switching an input power source; a plurality of transformers including a plurality of primary windings connected to the inverter unit and connected to each other in series and a plurality of secondary windings each of which is coupled with each of the primary windings; a plurality of rectification units each of which is connected to each of the secondary windings; and a plurality of LEDs each of which is connected to each of the rectification units.