Abstract: A high-strength hyaluronate fiber, suitable for use in a surgical suture, a lifting thread, a tissue-engineering scaffold, etc., and a manufacturing method thereof are proposed. The method includes (a) controlling a water content of a hyaluronate having a weight average molecular weight of 100-3,000 kDa to 50-95 wt % to prepare a hyaluronate paste, (b) melting the hyaluronate paste having a controlled water content at a temperature ranging from room temperature to 100° C., and then extruding the hyaluronate paste through a nozzle, and (c) drying the extruded spinning fluid to form a fiber. The hyaluronate fiber has the water content of 5-25 wt %, the tensile strength of 3 to 15 kg/mm2, and a smooth surface with small cracks, so that the hyaluronate fiber can be used for a surgical suture, a lifting thread, a filler for cosmetic surgery, a tissue-engineering scaffold, etc.

Abstract: The present invention relates to a book holder capable of holding books having various thicknesses and, specifically, to a book holder capable of holding a thick book open, as is, without folding the pages thereof.

Abstract: The present invention relates to a method for producing various metabolites from a gas-phase alkane compound using a Methylomonas sp. DH-1 strain, deposited under Accession Number KCTC18400P, or a transformant thereof. The method provided in the present invention enables more effective production of various metabolites from a gaseous alkane compound compared to the conventional method using methanotrophic bacteria, and thus, the method of the present invention can be widely used for production of a target material using a bioreactor.

Abstract: The present invention relates to a book holder capable of holding books having various thicknesses and, specifically, to a book holder capable of holding a thick book open, as is, without folding the pages thereof.

Abstract: The present invention relates to a method for producing various metabolites from a gas-phase alkane compound using a Methylomonas sp. DH-1 strain, deposited under Accession Number KCTC18400P, or a transformant thereof. The method provided in the present invention enables more effective production of various metabolites from a gaseous alkane compound compared to the conventional method using methanotrophic bacteria, and thus, the method of the present invention can be widely used for production of a target material using a bioreactor.

Abstract: An electronic device includes a first camera that obtains a first image, a second camera that obtains a second image having a disparity with the first image, a memory that stores a first calibration parameter, and a processor that calibrates at least one of the first image and the second image by using the first calibration parameter and composes the first image and the second image. The processor is configured to collect, if a specified event occurs, images obtained from the first camera and the second camera after the specified event occurs and store the collected images in the memory, to compute a second to calibration parameter based on the images obtained after the specified event occurs, if a specified condition is satisfied, and to update the first calibration parameter with the second calibration parameter.

Abstract: A drawer type air cleaner having increased maintenance convenience is provided. The drawer type air cleaner includes a door that is configured to open or close an opening of filter receiving cavity formed in air cleaner body that suctions exterior air and discharges fresh air and a filter disposed in the filter receiving cavity and configured to filter out foreign substances from the exterior air and convert the exterior air into fresh air. The filter having a packing is disposed in the filter receiving cavity and thus provides an airtight seal between the filter and the filter receiving cavity. A filter protector is interlocked with an operation of closing the door to convert the filter from an incompletely coupled state when the filter disposed in the filter receiving cavity and is unable to compress the packing into a fully coupled state to a state when the filter compresses the packing.

Abstract: An electronic device includes a first camera that obtains a first image, a second camera that obtains a second image having a disparity with the first image, a memory that stores a first calibration parameter, and a processor that calibrates at least one of the first image and the second image by using the first calibration parameter and composes the first image and the second image. The processor is configured to collect, if a specified event occurs, images obtained from the first camera and the second camera after the specified event occurs and store the collected images in the memory, to compute a second to calibration parameter based on the images obtained after the specified event occurs, if a specified condition is satisfied, and to update the first calibration parameter with the second calibration parameter.

Abstract: A drawer type air cleaner having increased maintenance convenience is provided. The drawer type air cleaner includes a door that is configured to open or close an opening of filter receiving cavity formed in air cleaner body that suctions exterior air and discharges fresh air and a filter disposed in the filter receiving cavity and configured to filter out foreign substances from the exterior air and convert the exterior air into fresh air. The filter having a packing is disposed in the filter receiving cavity and thus provides an airtight seal between the filter and the filter receiving cavity. A filter protector is interlocked with an operation of closing the door to convert the filter from an incompletely coupled state when the filter disposed in the filter receiving cavity and is unable to compress the packing into a fully coupled state to a state when the filter compresses the packing.

Abstract: A double metal cyanide catalyst of the present invention having a controlled reactivity for preparing a polyol, which contains an ether ligand having a molecular weight of less than 200 and a glycol ligand having a molecular weight of less than 200 can be used in the preparation of a polyol having a unsaturation degree suitable for direct use for producing a polyurethane having suitable properties.

Abstract: A double metal cyanide catalyst of the present invention having a controlled reactivity for preparing a polyol, which contains an ether ligand having a molecular weight of less than 200 and a glycol ligand having a molecular weight of less than 200 can be used in the preparation of a polyol having a unsaturation degree suitable for direct use for producing a polyurethane having suitable properties.

Abstract: Disclosed herein is a binder envelope, configured so that bands made of a transparent or opaque material are attached to a surface of the envelope, thus holding papers. According to this invention, bands having a predetermined width are horizontally attached to a surface of the envelope. Upper and lower horizontal bands (10, 10?) are attached to upper and lower portions of the envelope, respectively. When the upper horizontal band is attached to the surface of the envelope, left and right attachment lines (11, 12) are vertically formed on left and right side edges of the upper horizontal band through a thermal adhesion method. Further, left and right attachment lines (H?, 12?) are formed on left and right side edges of the lower horizontal band, and a lower attachment line (13?) is formed on a lower edge of the lower horizontal band through a thermal adhesion method.