Abstract: A semiconductor package and a method of manufacturing a semiconductor package. As a non-limiting example, various aspects of this disclosure provide a semiconductor package, and method of manufacturing thereof, that comprises shielding on multiple sides thereof.

Abstract: Provided are a basic electrocatalyst applied to a carbon dioxide reduction and ethylene production system, a basic electrocatalyst electrode and an apparatus each including the same, and a method of manufacturing the basic electrocatalyst electrode. The basic electrocatalyst electrode for for carbon dioxide reduction and ethylene production includes: catalyst particles each including copper hydroxide (Cu(OH)2); and a basic compound. Since the basic electrocatalyst electrode has high carbon dioxide reduction performance and high ethylene selectivity, the basic electrocatalyst electrode may be applied to a reduction electrode of a carbon dioxide reduction and ethylene production apparatus and may exhibit high current density and high ethylene selectivity. The basic electrocatalyst electrode may be manufactured by a simple method, and may be applied to a large-area electrode.

Abstract: A golf information service method realized in a screen golf system, the golf information service method, includes: a mobile terminal of each of a plurality of users accessing a server connected to a simulator, configured to realize an image in which a virtual ball is simulated on a virtual golf course such that the users play a virtual golf game, over a network; the server receiving information about the golf game that is being performed by the simulator from the simulator; the server transmitting the information about the golf game, received from the simulator, and information about a course map based thereon to the mobile terminal; and the mobile terminal displaying information about progress of the golf game on the course map of a hole on which the golf game is being played based on the information about the golf game.

Abstract: A method of casting a casting product having tubular flow passages includes: attaching a cast-in pipe insert, having outer and inner fixing members to which both ends of pipes are coupled, respectively, to a fixed mold; assembling a movable mold with the fixed mold; injecting a molten metal into a cavity defined inside the fixed and movable molds; ejecting a casting product from the assembled molds after injecting the molten metal; and removing the outer and inner fixing members from the casting product.

Abstract: A semiconductor package using a polymer substrate is disclosed and may include a polymer cavity structure comprising first metal traces, a micro-electro mechanical systems (MEMS) device and a semiconductor die bonded to a first surface within a cavity of the cavity structure, and a substrate coupled to the cavity structure and comprising second metal traces coupled to the first metal traces. The substrate may enclose the MEMS device and the semiconductor die. Ground traces may be on external surfaces of the polymer cavity structure. Ball lands may be on a surface of the substrate opposite to a surface with the second metal traces. The first metal traces may extend from the first surface of the polymer cavity structure up a sidewall of the cavity and to conductive patterns on a top surface of the polymer cavity structure.

Abstract: A chalcopyrite compound-based thin film in which an alkali metal is incorporated, and a method of fabricating the same are provided. The chalcopyrite compound-based thin film in which an alkali metal is incorporated may have improved film characteristics such as excellent chalcopyrite crystal characteristics and improved surface characteristics, and may exhibit improved optical characteristics by control of the distribution of constituent elements in the chalcopyrite compound layer. Accordingly, performance of a solar cell including the chalcopyrite compound-based thin film may be improved. The chalcopyrite compound-based thin film may be easily fabricated through a solution process.

Abstract: Disclosed herein are a method of acid saccharification of biomass and a method of polymerization of furan compounds. The method of acid saccharification of biomass comprises recovering pentose-derived furan compounds produced during the acid saccharification process of biomass. The method of acid saccharification of biomass comprises introducing furan compounds into the acid saccharification process of biomass, to produce and recover furan polymers.

Abstract: An electronic device structure having a shielding structure includes a substrate with an electronic component electrically connected to the substrate. The shielding structure includes conductive spaced-apart pillar structures that have proximate ends connected to the substrate and distal ends spaced apart from the substrate, and that are laterally spaced apart from the first electronic component. In one embodiment, the conductive pillar structures are conductive wires attached at one end to the substrate with an opposing end extending away from the substrate so that the conductive wires are provided generally perpendicular to the substrate. A package body encapsulates the electronic component and the conductive spaced-apart pillar structures. In one embodiment, the shielding structure further includes a shielding layer disposed adjacent the package body, which is electrically connected to the conductive spaced-apart pillar structures. In one embodiment, the electrical connection is made through the package.

Abstract: The present invention relates to a Doherty combiner used in a Doherty power amplifier, the Doherty combiner comprising: a phase shift section connected to one end of a carrier amplifier so as to change a phase of an RF signal output from the carrier amplifier; a matching section connected to an output terminal of the Doherty power amplifier so as to impedance-match an output of the Doherty power amplifier; and a bandwidth improvement section connected to one end of a peaking amplifier so as to change at least one of a phase bandwidth and an amplitude bandwidth of the Doherty power amplifier.

Abstract: A composite casting system for manufacturing a heterogeneous material casting product may include a fixed mold; a movable mold for opening or closing one side of the fixed mold; a slide core pin provided inside the fixed mold or the movable mold, and capable of being protruded to a cavity side, which is formed by a combination of the fixed mold and the movable mold, from the inside of the fixed mold or the movable mold; a high-pressure casting device for injecting high-pressure casting molten metal into the cavity; and a gravity casting device for injecting gravity casting molten metal through a gravity casting hole formed on the fixed mold or the movable mold.

Abstract: A centrifugal casting apparatus for different materials may include a mold having a shape corresponding to a shape of an outer surface of a casting to be produced, and having a cavity receiving molten metals therein, a molten metal guide inserted into the mold and configured to guide the molten metals so that the molten metals are separately injected into the mold, a guide fixing support fixing the molten metal guide to a predetermined position, and a motor configured to rotate the mold around a rotation axis.

Abstract: A method of forming a casting with a flow passage may include forming a core obtained by filling a tubular pipe with a filler; inserting the core into a mold having a cavity corresponding to a shape of the casting to be formed; performing a casting process by injecting molten metal into the cavity; and removing the filler from the core, wherein the casting process is performed through a high-pressure casting process.

Abstract: The present disclosure relates to a hydroxyl group-containing amine-based sulfur dioxide and sulfurous absorbent, and a method for preparing the same. The absorbent uses an ionic liquid in the form of a salt including a diamine compound substituted with a hydroxyl group, and can be used as an absorbent capable of removing not only sulfur dioxide (SO2) but also sulfurous acid (H2SO3) formed by combination of sulfur dioxide with water.

Abstract: A method for uploading and downloading file includes receiving, by a request receiver of the server, an upload request of a file from a first user terminal; transmitting, by the request receiver, a location information of a storage for storing the file to the first user terminal, verifying, by an upload confirmer of the server, whether the file is uploaded to the storage by the first user terminal, and storing, by a DB manager of the server, a metadata of the file including the location information in a metadata database (DB) when the file is uploaded to the storage by the first user terminal. A user may directly upload/download a file to/from the storage through the user terminal, and in this case, even if the number of users is increased, the server may not directly upload/download the file, thereby minimizing load burden of the server.

Abstract: The washing machine includes a cabinet, a drum installed inside the cabinet, and a fan assembly to guide heated air into the drum. A fan assembly includes a shroud provided with an air inlet hole, a hub rotated by a driving motor, a plurality of blades provided along a circumferential direction of the hub to guide the air introduced through the air inlet hole in the circumferential direction of the hub, and a scroll guiding the air guided in the circumferential direction of the hub into the drum. A partition wall prevents the air guided in the circumferential direction of the hub from being re-introduced into the air inlet hole. The blade includes a shroud contact portion in contact with the shroud and a hub contact portion in contact with the hub. An inflection point is formed between the shroud contact portion and the hub contact portion.

Abstract: In a synchronization system including a local terminal, latest metadata of a file in a local storage and latest metadata of a file in the server storage are managed in a first tree database, which is a virtual database in a local terminal, and each of the local terminals is allowed to upload or download a changed file on the basis of the metadata in the first tree database so that a conflict that may occur due to multiple users simultaneously changing files can be minimized.

Abstract: Provided herein are a saltcore for casting with aluminum and a manufacturing method thereof, and more particularly, a saltcore and a manufacturing method thereof capable of reducing shrinkage while satisfying strength during die-casting by including at least one cation of K+, Na+ and Mg2+ and at least one anion of Cl? and CO32?, wherein a saltcore for casting with aluminum may include at least one cation of K+, Na+ and Mg2+ and at least one anion of Cl? and CO32?.

Abstract: A method for managing contents shared by a Social Network Service (SNS), executed by a cloud server which is associated with an account of the SNS. It is detected whether a first content has been newly uploaded to the SNS or whether a metadata related to the first content previously uploaded to the SNS has been newly added. A second content corresponding to the first content is searched. The cloud storage is updated by linking context information related to the first content to the second content corresponding to the first content. The cloud server interworks with an account of the SNS of each user's individual to link context information of content shared on the SNS with the content stored in the personal cloud storage, thereby enabling easier update of the cloud storage. A user may easily search for desired contents using the context information.

Abstract: Systems and techniques for dynamic micropayment fee selector are described herein. A transaction stream may be obtained from an electronic transaction processing service. A transaction velocity of a set of transactions that correspond to a user account of the electronic transaction processing service included in the transaction stream may be calculated for a first period of time. A fee tier data structure may be generated based on the transaction velocity. A fee tier of the fee tier data structure may be applied to the user account. An indication of the applied fee tier and an electronic representation of the fee tier data structure may be transmitted to a device associated with the user account.

Abstract: A method of manufacturing a hollow salt core may include an injection operation, in which molten salt including an ingredient of a salt core is injected into a mold through pressurization; a primary maintenance operation, in which a pressure is maintained in the mold including the injected molten salt; a primary decompressing operation, in which a portion of the molten salt maintained with the pressure is collected in the mold through decompression of the mold; a secondary maintenance operation, in which a pressure is maintained in the mold including the residual molten salt after the primary decompressing operation; and a secondary decompressing operation, in which the pressure of the mold is decreased after the secondary maintenance operation.