Abstract: Provided is a method of economically modifying low rank coal (LRC) to be high grade coal having minimized water re-absorption and minimized spontaneous ignition possibility while saving energy by coating heavy oil directly on coal without using solvent oil. Provides is a method of modifying coal using palm oil residue, including milling the coal, homogenously mixing the palm oil residue with the milled coal, melting the palm oil residue mixed with the coal so as to be coated on a surface of the coal, and simultaneously drying moisture in the coal, cooling the dried coal, and briquetting the cooled coal.

Abstract: Provided is a method of economically modifying low rank coal (LRC) to be high grade coal having minimized water re-absorption and minimized spontaneous ignition possibility while saving energy by coating heavy oil directly on coal without using solvent oil. Provides is a method of modifying coal using palm oil residue, including milling the coal, homogenously mixing the palm oil residue with the milled coal, melting the palm oil residue mixed with the coal so as to be coated on a surface of the coal, and simultaneously drying moisture in the coal, cooling the dried coal, and briquetting the cooled coal.

Abstract: Disclosed herein is a method of separating carbon dioxide from a gas mixture using a biopolymer, including: introducing hemocyte or extrapallial fluid, extracted from shells, into a reactor filled with 1 L of a solution containing a calcium source, and then dissolving the hemocyte or extrapallial fluid in the solution to form a mixed solution; and mixing carbon dioxide or a gas mixture containing carbon dioxide into the mixed solution to separate carbon dioxide from the gas mixture.

Abstract: Disclosed herein is a method of separating carbon dioxide from a gas mixture using a biopolymer, including: introducing hemocyte or extrapallial fluid, extracted from shells, into a reactor filled with 1L of a solution containing a calcium source, and then dissolving the hemocyte or extrapallial fluid in the solution to form a mixed solution; and mixing carbon dioxide or a gas mixture containing carbon dioxide into the mixed solution to separate carbon dioxide from the gas mixture.

Abstract: The present invention relates to a zoom camera with an automatic power-shutoff function, that includes a motor including a zoom motor, a focal-distance-recognizing unit for outputting a signal corresponding to a focal distance, and a controller for positioning a body tube in a wide-angle position in the case when the camera has not operated during a first stop-time period and shuts off power if the camera has not operated during a second stop-time period, wherein it becomes possible to protect the body tube from an external impact by positioning the body tube in the wide-angle position during the first stop-time period and to take a photograph instantly when he sees a subject by eliminating the time required for turning the power on again.

Abstract: The present invention relates to a zoom camera with an automatic power-shutoff function, that includes a motor including a zoom motor, a focal-distance-recognizing unit for outputting a signal corresponding to a focal distance, and a controller for positioning a body tube in a wide-angle position in the case when the camera has not operated during a first stop-time period and shuts off power if the camera has not operated during a second stop-time period, wherein it becomes possible to protect the body tube from an external impact by positioning the body tube in the wide-angle position during the first stop-time period and to take a photograph instantly when he sees a subject by eliminating the time required for turning the power on again.

Abstract: A high efficiency compact gas-particulate separator is provided comprising: a bag filter disposed above and a cyclone disposed below,the bag filter including: a casing, a compressed air header into the casing; a diaphragm valve on the header; a blow tube connected to the header; a venturi for accelerating an ejected jet of compressed air from the blow tube and for inducing an inflow of secondary air; and a filter bag for collecting dusts mounted in the casing; the casing having a clean air outlet, andthe cyclone including: a dust-laden gas inlet; an outer cylinder for generating a centrifugal force, the cylinder being connected to the casing; an inner tube for letting a dust-laden gas pass from below upward into the casing; and a dust hopper for storing dust particles captured by centrifugal forces and dislodged dust cakes removed from the filter bag by cleaning.