Abstract:
An inorganic calcium silicate-based incombustible construction material is disclosed. Provided are a new incombustible construction material that is not burnt even at a high temperature of 1000 0C or higher and does not discharge harmful gases at all by using naturally-occurring wollastonite and a hydraulic material that is stable even at a high temperature, and its manufacturing method. Because the incombustible construction material has specific gravity of 1 or less, it floats on water, has wood-like processability that allows nailing, sawing, planning and punching, and has the same texture as that of a general wood. Consequently, the incombustible construction material can be utilized for various materials, such as interior and exterior materials of a building.
Abstract:
A tungsten-including diamond like carbon film, comprises an amorphous carbon base of a film type; and tungsten added to the carbon base in an atomic state. A manufacturing method of a tungsten-including diamond like carbon film comprises: (a) fixing an objective body to a supporter in a vacuum chamber of complex coating equipment; and (b) spraying an ion beam toward the objective body and controlling a content of tungsten sputtered toward the objected body upon controlling an Ar fraction. A dental device coated with a tungsten-including diamond like carbon film, is manufactured by the aforementioned manufacturing method of a tungsten-including diamond like carbon film. According to such a structure, the carbon film and the objective body employing the film have the mechanical characteristic, and improved durability as the residual stress is lowered.
Abstract:
The present invention relates to a combustion reactor for nanopowders, a synthesis apparatus for nanopowers using the combustion reactor, and a method of controlling the synthesis apparatus. The combustion reactor for nanopowders comprises an oxidized gas supply nozzle connected to an oxidized gas tube; a gas supply unit supplying a fuel gas and a precursor gas; and a reaction nozzle forming concentricity on an inner wall of the oxidized gas supply nozzle to be connected to the gas supply unit and having an inlet opening for supplying an oxidized gas disposed at a region adjacent to a jet orifice for spraying flames. In the present invention, it is possible to precisely control the stability of flames, the uniform temperature distribution of flames and the temperature of flames that affect the properties of nanopowders, and the deposition of oxide in the combustion reactor is prevented to thus enable a continuous and uniform reaction for a long time, thereby enabling an economic and efficient synthesis of nanopowders.
Abstract:
A capsule type micro-robot moving system moves on an organ's wall covered with mucilage at a high speed. The present invention provides a capsule type micro-robot moving system, which is structured such that a head is formed in a semi-spherical shape and the outer surface of the capsule is coated with an anti-adhesion coating agent for reducing friction against organs during the movement, particularly, is structured to move as long as a linear stroke corresponding to the distance between the driving part and the inner cylinder in the state that the limbs folded in and unfolded out of the capsule completely contact and stick to the walls of the organs, resulting in providing the reliability and moving more rapidly.
Abstract:
A hollow diamond shell with a size of a few micrometer to hundreds of micrometer and having a geometrical shape and its fabrication method are disclosed. A diamond film is deposited by a CVD method and porous grits are used as a victim substrate to be etched later, so that the substrate can be easily removed by a capillary phenomenon that an etching solution can be intensively absorbed in a substrate etching process. Thus, a perfect diamond shell with only a plurality of fine pores with a nano size without any conspicuous opening can be obtained. Also, a diamond shell with a small opening of below 10 percent of the surface area of grits can be fabricated by controlling a nuclear generation of diamond particles.
Abstract:
Disclosed are a manganese oxide-t itania aerogel catalyst having high specific surface area and porosity, a method of preparing the same and a method of completely ox i datively-decomposing a chlorinated aromatic compound using the catalyst under air condition. The manganese oxide-titania aerogel catalyst of the invention is an aerogel form having many porosities and a high specific surface area obtained by performing a supercritical drying of manganese oxide-titania wet gel, which is prepared by a sol-gel method, using carbon dioxide and then firing the dried manganese oxide-titania, with a micro porosity structure being maintained, and consists of manganese oxide and titania wherein a content of the manganese oxide is 1-15 wt% of an overall catalyst weight. Since the manganese oxide-titania aerogle catalyst of the invention has the very high conversion rate for the complete oxidation reaction of the chlorinated aromatic compound and high selectivity to the carbon dioxide of the products of the oxidative decomposition and is very thermally stable, so that it can be usefully used in the oxidation reaction having a high heating value capable of generating local heat spots.
Abstract:
Disclosed are a vanadia-titania aerogel catalyst having high specific surface area and porosity, a method of preparing the same and a method of completely oxidatively-decomposing a chlorinated aromatic compound using the catalyst under air condition. The vanadia-titania aerogel catalyst of the invention is an aerogel form having many porosities and a high specific surface area obtained by performing a supercritical drying of vanadia-titania wet gel, which is prepared by a sol-gel method, with carbon dioxide and then firing the dried vanadia-titania, with a micro porosity structure being maintained, consists of vanadia and titania wherein a content of the vanadia is 1~15 wt % of an overall catalyst weight. In addition, according to the invention, the vanadia-titania aerogel catalyst may further comprise a manganese oxide of 1-5 wt% or a sulfur component of 0.0001-1 wt%. Since the vanadia-titania aerogle catalyst of the invention has the very high conversion rate and selectivity for the complete oxidation reaction of the chlorinated aromatic compound and is very thermally stable, it can be usefully used in the oxidation reaction having a high heating value capable of generating local heat spots.
Abstract:
This invention provides a method for fabricating geometrical diamond/matrix composites where all or a part of surfaces of the matrix are covered with a diamond film, and to fabricate hollow diamond shells using the composites where a part is uncoated with a diamond film. Hollow diamond shells were prepared by etching out of the matrix soluble with chemicals through an opening, a zone on the matrix, uncoated with diamond film. By changing the shape and the size of the geometrical matrixes, various kinds of diamond/matrix composites and diamond shells in shape and in size can be fabricated. The sizes available are between 200 nm and 2 mm.
Abstract:
The present invention relates to a novel 1β-methylcarbapenem derivative, a process for the preparation thereof and a pharmaceutical composition comprising the 1β-methylcarbapenem derivative or a pharmaceutically acceptable salt thereof as an active antibacterial ingredient.
Abstract:
The present invention relates to an emulsion or cubosome composition sterically stabilized by including biocompatible polymers, an emulsion or cubosome formulation including the same composition and the preparation method thereof.