Abstract: Disclosed herein is a natural gas liquefaction process using a single refrigeration cycle adopting a mixed refrigerant, and therefore having a simple structure and thus a compact system which is easy to operate, and further, after the mixed refrigerant is separated into two refrigerant parts, the two refrigerant parts are not mixed with each other but go through condensing (cooling), expanding, heat-exchanging, and compressing stages individually, and thus, optimal temperature and pressure conditions are applied to each of the separated refrigerant parts to increase efficiency of the liquefaction process.

Abstract: Foam items may be buffed using particles such as particulate sodium bicarbonate in accordance with the present invention. Foam items may be, for example, expanded EVA foam items pre-formed into an intermediate size and shape. A skin layer may be formed during the expansion of the foam item to form an expanded foam item which may be entirely or partially removed by buffing the item using particles projected with selected buffing parameters. The buffing parameters may be varied based upon the thickness of at least a portion of the skin layer and/or the desired degree of moldability for the foam item after buffing. Particulate sodium bicarbonate or other types of particles used for buffing may be recycled and reused for further buffing of foam items.

Abstract: A wafer level fan out semiconductor device and a manufacturing method thereof are provided. A first sealing part is formed on lateral surfaces of a semiconductor die. A plurality of redistribution layers are formed on surfaces of the semiconductor die and the first sealing part, and solder balls are attached to the redistribution layers. The solder balls are arrayed on the semiconductor die and the first sealing part. In addition, a second sealing part is formed on the semiconductor die, the first sealing part and lower portions of the solder balls. The solder balls are exposed to the outside through the second sealing part. Since the first sealing part and the second sealing part are formed of materials having thermal expansion coefficients which are the same as or similar to each other, warpage occurring to the wafer level fan out semiconductor device can be suppressed.

Abstract: Foam items may be buffed using particles such as particulate sodium bicarbonate in accordance with the present invention. Foam items may be, for example, expanded EVA foam items pre-formed into an intermediate size and shape. A skin layer may be formed during the expansion of the foam item to form an expanded foam item which may be entirely or partially removed by buffing the item using particles projected with selected buffing parameters. The buffing parameters may be varied based upon the thickness of at least a portion of the skin layer and/or the desired degree of moldability for the foam item after buffing. Particulate sodium bicarbonate or other types of particles used for buffing may be recycled and reused for further buffing of foam items.

Abstract: A wafer level fan out semiconductor device and a manufacturing method thereof are provided. A first sealing part is formed on lateral surfaces of a semiconductor die. A plurality of redistribution layers are formed on surfaces of the semiconductor die and the first sealing part, and solder balls are attached to the redistribution layers. The solder balls are arrayed on the semiconductor die and the first sealing part. In addition, a second sealing part is formed on the semiconductor die, the first sealing part and lower portions of the solder balls. The solder balls are exposed to the outside through the second sealing part. Since the first sealing part and the second sealing part are formed of materials having thermal expansion coefficients which are the same as or similar to each other, warpage occurring to the wafer level fan out semiconductor device can be suppressed.

Abstract: A natural gas liquefaction process according to the present invention uses a single closed-loop refrigeration cycle employing a mixed refrigerant, thereby having a simple structure for the liquefaction process and allowing the liquefaction process to be easily operated. Furthermore, the present invention cools natural gas after one stream is separated into two streams, thereby having an excellent efficiency of the liquefaction process.

Abstract: Provided is a re-liquefying method for a stored liquid which has a simple structure or operation and excellent process efficiency. Since the method does not use separate refrigerant, the structure or operation in the re-liquefying method is significantly simplified. In addition, since a portion of a main stream is separated to form a cycle similar to a refrigerant cycle which cools the mainstream, the process efficiency of the re-liquefying method is significantly improved. The above Abstract is a more accurate literal translation of the abstract from the original priority application than the PCT abstract.

Abstract: A semiconductor device includes a via electrode penetrating a substrate and a back-side molding layer covering a back-side surface of the substrate. The back-side molding layer contacts a sidewall of a back-side end portion of the via electrode, which is a portion of the via electrode that protrudes from the back-side surface of the substrate.

Abstract: A method and apparatus are provided to manage contents in a network, and a web server used thereto. A memory is configured to store a code output with a printed matter and mapping information of contents, which are executed by a reader reading the code. A receiver is configured to receive a request from the reader to transmit the mapping information. A transmitter is configured to transmit the mapping information to the reader. When the code outputted to the printed matter is read, the contents executed in the reader are changed into various contents such that the changed contents are used. In addition, a product user and a product seller obtain the learning information of a learner through the reader, or product application information.

Abstract: Foam items may be buffed using particles such as particulate sodium bicarbonate in accordance with the present invention. Foam items may be, for example, expanded EVA foam items pre-formed into an intermediate size and shape. A skin layer may be formed during the expansion of the foam item to form an expanded foam item which may be entirely or partially removed by buffing the item using particles projected with selected buffing parameters. The buffing parameters may be varied based upon the thickness of at least a portion of the skin layer and/or the desired degree of moldability for the foam item after buffing. Particulate sodium bicarbonate or other types of particles used for buffing may be recycled and reused for further buffing of foam items.

Abstract: Foam items may be buffed using particles such as particulate sodium bicarbonate in accordance with the present invention. Foam items may be, for example, expanded EVA foam items pre-formed into an intermediate size and shape. A skin layer may be formed during the expansion of the foam item to form an expanded foam item which may be entirely or partially removed by buffing the item using particles projected with selected buffing parameters. The buffing parameters may be varied based upon the thickness of at least a portion of the skin layer and/or the desired degree of moldability for the foam item after buffing. Particulate sodium bicarbonate or other types of particles used for buffing may be recycled and reused for further buffing of foam items.

Abstract: A semiconductor device includes a via electrode penetrating a substrate and a back-side molding layer covering a back-side surface of the substrate. The back-side molding layer contacts a sidewall of a back-side end portion of the via electrode, which is a portion of the via electrode that protrudes from the back-side surface of the substrate.

Abstract: A film with codes, a reader configured to read the film, and an electronic device having a display including the film are provided. The reader may include a first light irradiating section, a second light irradiating section, a control section, and a light capturing section.

Abstract: Disclosed are a method for providing a correction and teaching services over a network and a web server used in the method. The method of the present invention is implemented by the steps of: enabling a web server to receive information to be corrected including image information created by a student from a student terminal, storing the information to be corrected, transmitting the information to be corrected to a teacher terminal, receiving corrected information from the teacher terminal, and mapping the corrected information and the information to be corrected. According to the present invention, the cost of time required for correcting and teaching can be reduced, and the teacher can provide the student with both corrections on the student's answer sheet and with feedback in the teacher's voice.

Abstract: Disclosed are a film having codes recorded thereon, a reader used to recognize the film having the codes recorded thereon, and electronic equipment including a display device to which the film having the codes recorded thereon is attached. The reader includes a light emitting part irradiating light having a first wavelength onto a film surface printed with a code by using a predetermined fluorescent material, and a light receiving part receiving only a light having a second wavelength radiated by the predetermined fluorescent material if the light having the first wavelength is irradiated on the code. The reader recognizes the codes together with a screen when a code pattern is printed on the surface of the transparent material and the transparent material is attached on the surface of a display part provided in the electronic equipment.

Abstract: Disclosed herein is a natural gas liquefaction process of pre-cooling natural gas using a closed loop pre-cooling cycle and liquefying the pre-cooled natural gas using a closed loop liquefying cycle, wherein the closed loop pre-cooling cycle includes first and second pre-cooling cycles in parallel for pre-cooling supplied natural gases together in the same first heat exchange region through the respective pure refrigerants, and the closed loop liquefying cycle includes at least one liquefying cycle for liquefying the pre-cooled natural gas through a mixed refrigerant, the first and second pre-cooling cycles being a closed circuit cooling cycle.

Abstract: A method and apparatus are provided to manage contents in a network, and a web server used thereto. A memory is configured to store a code output with a printed matter and mapping information of contents, which are executed by a reader reading the code. A receiver is configured to receive a request from the reader to transmit the mapping information. A transmitter is configured to transmit the mapping information to the reader. When the code outputted to the printed matter is read, the contents executed in the reader are changed into various contents such that the changed contents are used. In addition, a product user and a product seller obtain the learning information of a learner through the reader, or product application information.

Abstract: Disclosed herein is a natural gas liquefaction process using a single refrigeration cycle adopting a mixed refrigerant, and therefore having a simple structure and thus a compact system which is easy to operate, and further, after the mixed refrigerant is separated into two refrigerant parts, the two refrigerant parts are not mixed with each other but go through condensing (cooling), expanding, heat-exchanging, and compressing stages individually, and thus, optimal temperature and pressure conditions are applied to each of the separated refrigerant parts to increase efficiency of the liquefaction process.

Abstract: A method is configured to provide a study pattern analysis service on a network, and a server used therewith. The server receives identification information from a smart pen used by a student to solve questions printed on a study material. The identification information, for each question is marked on locations where the questions are printed. The method and server generates study pattern information about the student based on the identification information received in the server. The study pattern analysis and study guidance for individual students using the study material are possible.

Abstract: A data processing device and method are provided. The data processing device includes a code storage unit storing an original code to be translated into a machine language code, a code analyzer analyzing the original code stored in the code storage unit, a register allocator allocating a predesignated register for a command included in the original code based on the result of analysis, and a code executor executing a machine language code generated using the allocated register.