Abstract: Provided is a bioresorbable stent including a stent substrate including a bioresorbable polymer and a contrast medium containing an iodine component, coated on the stent substrate. Since the stent according to the present invention is absorbed in and removed from the human body after a predetermined time, it has excellent biodegradability since it has improved radiopacity by iodine contrast medium coating, it has a high radiography contrast and is very efficient even when a procedure is performed with real time radiography, and since it has low foreshortening and high flexibility, radial force, and re-coil, it may be useful for insertion into a blood vessel having a small diameter, an acute occlusive lesion, an imminent occlusive lesion, and the like.

Abstract: A method of operating a storage device including a non-volatile memory includes: the storage device receiving from a host a first write command; determining, based on the first write command, whether first write data for the first write command is sequential data required to be written according to a write request order; writing the first write data in the non-volatile memory; and when the first write data and second write data for a second write command are sequential data, sequentially updating first mapping data including a mapping relationship between a first logical address and a first physical address for the first write data, and updating second mapping data including a mapping relationship between a second logical address and a second physical address for the second write data, according to an order in which the first write command and the second write command are received.

Abstract: Disclosed is a thermal reduction apparatus. The thermal reduction apparatus according to the exemplary embodiment includes: a preheating unit which preheats a to-be-reduced material and loads the to-be-reduced material into a reducing unit; the reducing unit which is connected to the preheating unit and in which a thermal reduction reaction of the to-be-reduced material occurs; a cooling unit which is connected to the reducing unit and from which the to-be-reduced material flowing into the cooling unit is unloaded to the outside; a gate device which is installed between the preheating unit and the reducing unit; a gate device which is installed between the reducing unit and the cooling unit; a condensing device which is connected to the reducing unit and condenses a metal vapor; a first blocking unit which is installed in the reducing unit; and a second blocking unit which is installed in the reducing unit so as to be spaced apart from the first blocking unit.

Abstract: A method of operating a storage device including a non-volatile memory includes: the storage device receiving from a host a first write command; determining, based on the first write command, whether first write data for the first write command is sequential data required to be written according to a write request order; writing the first write data in the non-volatile memory; and when the first write data and second write data for a second write command are sequential data, sequentially updating first mapping data including a mapping relationship between a first logical address and a first physical address for the first write data, and updating second mapping data including a mapping relationship between a second logical address and a second physical address for the second write data, according to an order in which the first write command and the second write command are received.

Abstract: Disclosed is a thermal reduction apparatus. The thermal reduction apparatus according to the exemplary embodiment includes: a preheating unit which preheats a to-be-reduced material and loads the to-be-reduced material into a reducing unit; the reducing unit which is connected to the preheating unit and in which a thermal reduction reaction of the to-be-reduced material occurs; a cooling unit which is connected to the reducing unit and from which the to-be-reduced material flowing into the cooling unit is unloaded to the outside; a gate device which is installed between the preheating unit and the reducing unit; a gate device which is installed between the reducing unit and the cooling unit; a condensing device which is connected to the reducing unit and condenses a metal vapor; a first blocking unit which is installed in the reducing unit; and a second blocking unit which is installed in the reducing unit so as to be spaced apart from the first blocking unit.

Abstract: Disclosed is a thermal reduction apparatus. The thermal reduction apparatus according to the exemplary embodiment includes: a preheating unit which preheats a to-be-reduced material and loads the to-be-reduced material into a reducing unit; the reducing unit which is connected to the preheating unit and in which a thermal reduction reaction of the to-be-reduced material occurs; a cooling unit which is connected to the reducing unit and from which the to-be-reduced material flowing into the cooling unit is unloaded to the outside; a gate device which is installed between the preheating unit and the reducing unit; a gate device which is installed between the reducing unit and the cooling unit; a condensing device which is connected to the reducing unit and condenses a metal vapor; a first blocking unit which is installed in the reducing unit; and a second blocking unit which is installed in the reducing unit so as to be spaced apart from the first blocking unit.

Abstract: Disclosed is a thermal reduction apparatus. The thermal reduction apparatus according to the exemplary embodiment includes: a preheating unit which preheats a to-be-reduced material and loads the to-be-reduced material into a reducing unit; the reducing unit which is connected to the preheating unit and in which a thermal reduction reaction of the to-be-reduced material occurs; a cooling unit which is connected to the reducing unit and from which the to-be-reduced material flowing into the cooling unit is unloaded to the outside; a gate device which is installed between the preheating unit and the reducing unit; a gate device which is installed between the reducing unit and the cooling unit; a condensing device which is connected to the reducing unit and condenses a metal vapor; a first blocking unit which is installed in the reducing unit; and a second blocking unit which is installed in the reducing unit so as to be spaced apart from the first blocking unit.

Abstract: A method is provided for writing data in a storage device, including a nonvolatile memory. The method includes receiving a pre-write command including a logical address and size information of write data, performing a pre-operation for optimization of a write operation based on the pre-write command, and writing the write data in the nonvolatile memory after the pre-operation is completed.

Abstract: A data retention method that includes sampling a plurality of nonvolatile memory devices included in a data storage device to detect retention information for each of the nonvolatile memory devices in response to a request of a host and outputting, from the data storage device to the host, sampling data based on a result of the sampling, determining, at the host, whether to perform a retention operation on each of the nonvolatile memory devices based on the sampling data, and performing the retention operation on each of the nonvolatile memory devices based on a result of the determination.

Abstract: A method is provided for writing data in a storage device, including a nonvolatile memory. The method includes receiving a pre-write command including a logical address and size information of write data, performing a pre-operation for optimization of a write operation based on the pre-write command, and writing the write data in the nonvolatile memory after the pre-operation is completed.

Abstract: A data retention method that includes sampling a plurality of nonvolatile memory devices included in a data storage device to detect retention information for each of the nonvolatile memory devices in response to a request of a host and outputting, from the data storage device to the host, sampling data based on a result of the sampling, determining, at the host, whether to perform a retention operation on each of the nonvolatile memory devices based on the sampling data, and performing the retention operation on each of the nonvolatile memory devices based on a result of the determination.

Abstract: Disclosed is a method of operating a data storage device. The method includes; causing the data storage device to transition from an off-line state to an on-line state, receiving a current global time as communicated from a host during the on-line state, and during the on-line state, refreshing data stored in the data storage device in response to the current global time using at least one normal data retention operation.

Abstract: A coating method includes rotatably supporting both ends of the piston or product to be coated; injecting coating material to a first parts of the piston or product to be coated through a first nozzle while rotating the piston, and simultaneously spreading to a uniform film thickness the coating material applied to the first part of the piston or product to be coated thereby removing excess coating material; fixedly supporting both ends of the piston or product to be coated; injecting coating material to a second pad of the piston or product to be coated through a second nozzle while sliding the second nozzle in an axial direction of the piston or product to be coated, and simultaneously spreading to a uniform film thickness the coating material applied to the second part of the piston or product to be coated thereby removing excess coating material.

Abstract: A pulley is made by fixing an edge of an opening of a plate by using a first upper mandrel ring installed at a lower end of a first supporting pin of a first forming device. A supporting block disposed around an upper end of a first spindle is rotated with the first spindle. An inner hub of the pulley is formed by inwardly pressing an upper surface of the plate against a first pressing roller to reduce the thickness of the plate while drawing the plate around a first mandrel ring. The plate is fixed to a second spindle of a second forming device, so the plate rotates with the second spindle. An outer hub is formed by pressing a convex bead toward the inner hub by using a fourth pressing roller and by drawing the outer hub.

Abstract: A friction stir welding apparatus of a piston for variable capacity swash plate type compressor bonds two pistons through frictions stir welding without forming a hole in welded portions of the piston members. The friction stir welding apparatus includes: A support that rotatably supports coaxially coupled first and second pistons. A welder, rotatably inserted into welded portions of the first and second pistons supported on the support, performs friction stir welding along the rotation direction of the first and second pistons. Support rollers elastically mounted on the lower portions of the pistons have central axis lines of the piston members on central axis lines of the rotation support while the pistons are supported on the support. The rollers vertically move through a predetermined height while supporting the pistons. The welder is transferred from the welded portions to another position after welding of the welded portions.

Abstract: A pulley is made by fixing an edge of an opening of a plate by using a first upper mandrel ring installed at a lower end of a first supporting pin of a first forming device. A supporting block disposed around an upper end of a first spindle is rotated with the first spindle. An inner hub of the pulley is formed by inwardly pressing an upper surface of the plate against a first pressing roller to reduce the thickness of the plate while drawing the plate around a first mandrel ring. The plate is fixed to a second spindle of a second forming device, so the plate rotates with the second spindle. An outer hub is formed by pressing a convex bead toward the inner hub by using a fourth pressing roller and by drawing the outer hub.

Abstract: A pulley is made by fixing an edge of an opening of a plate by using a first upper mandrel ring installed at a lower end of a first supporting pin of a first forming device. A supporting block is disposed around an upper end of a first spindle and is rotated with the first spindle. An inner nub is formed by inwardly pressing an upper surface of the plate against a first pressing roller to reduce the thickness of the plate while drawing the plate around a first upper mandrel ring. The plate is fixed to a second spindle of a second forming device, so the plate rotates with the second spindle. An outer hub is formed by pressing a convex bead toward the inner hub by using a fourth pressing roller and by drawing the outer hub.

Abstract: Disclosed is a friction stir welding apparatus of a piston for a swash plate type compressor with variable capacity, which integrally bonds two piston members of round section with each other through friction stir welding without forming any hole in welded portions of the piston members, thereby improving durability of the welded portions and easily bonding the piston members by size regardless of the size of the outer diameter of the piston members.

Abstract: A film coating apparatus has a nozzle body and a coating material spreading element having an injection hole communicated with the inside of the nozzle body, and formed integrally with the nozzle body. The apparatus further has a rotation support element and a fixing element for rotatably supporting both ends of a piston for a fixed displacement swash plate type compressor and a pair of first coating material applying elements moveably installed above the rotation support element. The first coating material applying elements have a pair of first nozzles which apply coating material in uniform thickness to circumferential outer surfaces of both head parts of the piston. A second coating material applying element is installed above the fixing element such that it can be moved upward and downward and slid laterally to apply coating material in uniform thickness to a bridge part of the piston.

Abstract: Method and device for forming a pulley are disclosed. The method of the present invention includes the first step to fix the plate working piece formed with the hole in the intermediate thereof to the first forming device; the second step to form the inner hub by rotating the plate working piece and pressing the upper surface of the plate works in drawing process; the third step to obtain the first semi-manufactured pulley by pressing the upper surface of the plate working piece and by forming the outer hub in drawing process.