Abstract: A hydrogen supply method includes a two-side heat exchange mode in which both introducing a second fluid into a hydrogen storage part after the second fluid exchanges heat with a first fluid in a second heat exchanger in a state in which a compressor is driven to compress the first fluid and introducing the second fluid into the hydrogen storage part after the second fluid is heated or cooled in a thermal device are performed. The method also includes a one-side heat exchange mode in which one of introducing the second fluid into the hydrogen storage part after the second fluid exchanges heat with the first fluid in the second heat exchanger in a state in which the compressor is driven to compress the first fluid and introducing the second fluid into the hydrogen storage part after the second fluid is heated or cooled in the thermal device is performed.

Abstract: A semiconductor device includes a substrate with a conductive pattern. A semiconductor die is electrically connected to the substrate and both the semiconductor die and the substrate are at least partially covered by a package body. In some examples, through-mold vias are formed in the package body to provide electrical signal paths from an exterior surface thereof to the conductive pattern of the substrate. In some examples, through-mold vias are included in the package body to provide electrical signal paths between the semiconductor die and an exterior surface of the package body. In some examples, an interposer is electrically connected to the through-mold vias and may be covered by the package body and/or disposed in spaced relation thereto. In some examples, the interposer may not be electrically connected to the through-mold vias but may have one or more semiconductor dies of the semiconductor device electrically connected thereto.

Abstract: A silicon-carbon containing electrode material includes a porous carbon structure including pores, and a silicon-containing coating formed on the porous carbon structure. A volume ratio of mesopores is 70% or more based on a total pore volume of the porous carbon structure. A weight ratio of silicon is 30 wt % or more based on a total weight of the electrode material. A high-capacity secondary battery is effectively implemented by using silicon-carbon containing electrode material.

Abstract: Disclosed are a novel coronavirus-derived receptor-binding domain variant having reduced ACE2-binding affinity, a fusion protein comprising the same, and the use thereof. It is possible to overcome the drawbacks of conventional vaccines using the coronavirus spike protein or receptor-binding domain thereof, wherein the reduced ACE2 expression due to binding to ACE2 and negative feedback may lead to side effects of the lungs or heart, and in particular, may be fatal to patients suffering from underlying diseases of the lungs or heart. In particular, the fusion protein constructed by fusing the coronavirus receptor-binding domain with the Fc domain is imparted with a greatly improved in-vivo half-life, and has superior efficacy by further combining N protein, M protein, ORF protein, or the like of SARS-CoV-2 therewith through additional modification and thus is highly applicable to a multivalent immunogenic composition.

Abstract: A lane extraction method uses projection transformation of a 3D point cloud map, by which the amount of operations required to extract the coordinates of a lane is reduced by performing deep learning and lane extraction in a two-dimensional (2D) domain, and therefore, lane information is obtained in real time. In addition, black-and-white brightness, which is most important information for lane extraction on an image, is substituted by the reflection intensity of a light detection and ranging (LiDAR) sensor so that a deep learning model capable of accurately extracting a lane is provided. Therefore, reliability and competitiveness is enhanced in the field of autonomous driving, the field of road recognition, the field of lane recognition, and the field of HD road maps for autonomous driving, and the fields similar or related thereto, and more particularly, in the fields of road recognition and autonomous driving using LiDAR.

Abstract: Mobile telecommunication service system and method using a public frequency are provided. The method includes receiving a call connection request for a certain recipient from a mobile communication terminal; and connecting a radio interval between the mobile communication terminal and a Base station Transceiver Subsystem (BTS) of a call connection interval of the mobile communication terminal and the certain recipient, using a public frequency band. Accordingly, it is possible to stably connect the call to the public institution in case of the emergency or the public operation. By raising the utilization of the limited frequency resources, the insufficient frequency in the private mobile telecommunication can be addressed. The public institutions provide the public frequency to the private telecommunication companies and use the mobile communication service for free or at a low cost in return.

Abstract: A gravity water pump pumping various kinds of fluids, including a waterfall, river water and drizzle, and gases heavier than air, using gravity and producing kinetic and potential energy is provided. As fluid falls into a set of a piston and a switch, which are hung by strings passing over pulleys supported by a support frame, a pressure is applied to fluid contained in the cylinder along an inner wall of which the piston and the switch move down, so that the fluid is pumped up. Kinetic energy is generated as the piston and the switch rise and fall during pumping, and potential energy is generated by the pumped fluid. When the pumped fluid is allowed to enter a fluid tank mounted an the support frame and reserving a fixed amount of fluid such that the pumped water can be circulated through the fluid tank, kinetic and potential energy can be generated continuously, without requiring a supply of fluid from an external source. The generated energy can be used in various industrial fields.

Abstract: A tap used for controlling the flow of liquid, such as water, oil, or gas, is disclosed. The liquid control tap of this invention has a valve capable of being effectively operated using inexhaustible energy, such as gravity, hydraulic pressure, buoyancy, magnetic force, frictional force, or elasticity. In the tap, a connection pipe, used for the purpose of connecting the tap body to a separate device such as a shower device, is integrated with the rear portion of the tap body into a single structure. The tap is also provided with an eccentric union for controlling the vertical position of the outlet port of the tap. Therefore, the present invention reduces the number of parts, the manufacturing process, improves productivity, and reduces the manufacturing cost of taps.