Abstract: The present invention relates to a porous oxide semiconductor including three-dimensionally interconnected nanopores, mesopores, and macropores, a method for preparing the porous oxide semiconductor, and a gas sensor including the porous oxide semiconductor as a gas sensing material. The nanopores have a diameter of 1 nm to less than 4 nm, the mesopores have a diameter of 4 nm to 50 nm, and the macropores have a diameter of 100 nm to less than 1 ?m. The oxide semiconductor gas sensor of the present invention exhibits ultrahigh response and ultrafast response to various analyte gases due to the presence of the controlled nanopores, mesopores, and macropores.

Abstract: The present invention relates to a porous oxide semiconductor including three-dimensionally interconnected nanopores, mesopores, and macropores, a method for preparing the porous oxide semiconductor, and a gas sensor including the porous oxide semiconductor as a gas sensing material. The nanopores have a diameter of 1 nm to less than 4 nm, the mesopores have a diameter of 4 nm to 50 nm, and the macropores have a diameter of 100 nm to less than 1 ?m. The oxide semiconductor gas sensor of the present invention exhibits ultrahigh response and ultrafast response to various analyte gases due to the presence of the controlled nanopores, mesopores, and macropores.

Abstract: This invention relates to a carrier for immobilizing a biocatalyst including a Fe2O3 yolk-shell structure, to an immobilized enzyme using the carrier, and to realizing an increase in the stability of the enzyme and stability in organic solvents by cross-linking the enzyme. According to this invention, the carrier for immobilizing a biocatalyst and the enzyme immobilized thereon can be reused, have increased stability, facilitate the control of reactivity, pH, and temperature, and can be widely useful in various biochemical engineering industries.

Abstract: Provided are a method of preparing biofuel, in which the method includes obtaining saccharificated products from lignocelluosic biomass in high saccharification yield, and a simultaneous pretreatment and saccharification (SPS), in which the method includes a first step of pulverizing biomass and immersing the pulverized biomass; and a second step of preparing saccharificated products by performing the simultaneous pretreatment and saccharification of the immersed biomass with the enzyme produced by inoculating a fungal consortium in a culture medium and culturing the fungal consortium. In addition, the second step further includes a detoxification of decreasing or removing toxic materials through laccase produced by culturing with a strain producing laccase in the second step.

Abstract: Provided are a method of preparing biofuel, in which the method includes obtaining saccharificated products from lignocelluosic biomass in high saccharification yield, and a simultaneous pretreatment and saccharification (SPS), in which the method includes a first step of pulverizing biomass and immersing the pulverized biomass; and a second step of preparing saccharificated products by performing the simultaneous pretreatment and saccharification of the immersed biomass with the enzyme produced by inoculating a fungal consortium in a culture medium and culturing the fungal consortium. In addition, the second step further includes a detoxification of decreasing or removing toxic materials through laccase produced by culturing with a strain producing laccase in the second step.

Abstract: Provided is a red phosphor which is excellent in emission efficiency by a long wavelength UV excitation source and has a fine and uniform particle size. The red phosphor includes a compound represented by (Li.sub.(2?z)?xM.sub.x)(AO.sub.4).sub.y:Eu.sub.z,Sm.sub.q and a flux wherein M is K, Mg, Na, Ca, Sr, or Ba, A is Mo or W, 0.ltoreq.x.ltoreq.2, 0.5.ltoreq.y.ltoreq.5, 0.01.ltoreq.z.ltoreq.1.5, and 0.001.ltoreq.q.ltoreq.1.0. Provided is also a method of preparing the red phosphor.

Abstract: Provided is a red phosphor represented by formula 1: (Li(2-z)-xMx)(MoO4)y:Euz,Smq??(1) where M is an element selected from K, Mg, Na, Ca, Sr, and Ba, 0?x?2, 0.5?y?5, 0.01?z?1.5, and 0.001?q?1.0. The red phosphor has emission characteristics such as high brightness when excited by, in particular, an excitation light source of around 405 nm. The red phosphor is 6 times brighter than conventional phosphors. Furthermore, the red phosphor can be used in a red light emitting diode (LED) that has a UV excitation light source, a white LED, and an active dynamic liquid crystal device (LCD). In addition, the white LED using the red phosphor has a color rendering index of 90 or greater and so has excellent color rendition.

Abstract: Provided is a red phosphor which is excellent in emission efficiency by a long wavelength UV excitation source and has a fine and uniform particle size. The red phosphor includes a compound represented by (Li(2-z)-xMx)(AO4)y:Euz,Smq and a flux wherein M is K, Mg, Na, Ca, Sr, or Ba, A is Mo or W, 0?x?2, 0.5?y?5, 0.01?z?1.5, and 0.001?q?1.0. Provided is also a method of preparing the red phosphor.

Abstract: Provided is a red phosphor represented by formula 1: (Li(2-z)-xMx)(MoO4)y:Euz,Smq??(1) where M is an element selected from K, Mg, Na, Ca, Sr, and Ba, 0?x?2, 0.5?y?5, 0.01?z?1.5, and 0.001?q?1.0. The red phosphor has emission characteristics such as high brightness when excited by, in particular, an excitation light source of around 405 nm. The red phosphor is 6 times brighter than conventional phosphors. Furthermore, the red phosphor can be used in a red light emitting diode (LED) that has a UV excitation light source, a white LED, and an active dynamic liquid crystal device (LCD). In addition, the white LED using the red phosphor has a color rendering index of 90 or greater and so has excellent color rendition.

Abstract: An aerosol generator for producing fine droplets in large quantities is used in an apparatus which can produce small particles having a high degree of crystallization and large surface area. The aerosol generator includes a chamber having a porous filter and a solution, and air is supplied to an upper side of the filter. A low pressure driving force, such as by a vacuum, is supplied to the chamber below the filter to generate droplets. A pyrogenetic reactor dries and pyrolyzes the droplets produced by the aerosol generator to give ultrafine particles and an ultrafine particle collector collects the ultrafine particles obtained by the pyrogenetic reactor. The low pressure driving force moves the droplets through the pyroletic reactor.