Abstract:
The present invention relates to an apparatus comprising a reactor body to which gas and water are supplied to create a gas hydrate; an upper cover which is engaged to an upper portion of the reactor body, a scraper mounted rotationally within the reactor body, and a motor for providing a driving force to the scraper. It is possible to remove gas hydrate particles attached to at least one of an inner surface of the reactor body and an inner surface of the upper cover, by a rotary driving of the scraper. According to the invention, it is possible to prevent a material hindering a heat transfer by attaching on a wall surface of the reactor, through a process of scraping out gas hydrate particles, when the scraper which is rotationally driven about a center axis of the reactor is close to the inner surface of the reactor.
Abstract:
The present invention provides an alloy manufacturing method in which a compound can be easily dispersed within an alloy base whilst maintaining high melt quality during casting, and also provides an alloy manufactured by means of the method. One aspect of the present invention provides an alloy manufacturing method comprising the steps of: forming a melt in which a metal to be cast and a master alloy comprising at least one kind of a first compound are melted; and casting the melt, wherein the master alloy is a magnesium master alloy or an aluminium master alloy.
Abstract:
Disclosed is a system for producing syngas and reducing tar using air/steam on a fluidized bed, which includes a gasifier (10) in which a solid fuel is gasified to produce a combustible syngas; a first loop seal (20) connected to the gasifier (10) to receive the sand from the gasifier; a CFB combustor (30) which receives the sand from the first loop seal via a loop seal connector (33) and the syngas from the gasifier via a syngas supply unit (34) and combusts the fuel to heat the sand; a cyclone (40) connected to the CFB combustor (30) to separate gas and solid particles discharged from the CFB combustor (30); a downcomer (50) disposed under the cyclone (40) to drop the sand; and a second loop seal (60) in which the sand dropped via the downcomer (50) is collected to form a sand bed (61).
Abstract:
The present invention relates to a three-dimensional porous support body, and to a method for manufacturing same. The three-dimensional porous support body of the present invention has a structure in which a biodegradable multifilament false twist yarn to which extra bulk is imparted is inserted into a tube-shaped circular knitwork consisting of biodegradable polymers. The three-dimensional porous support body is porous due to the network structure of the circular knitwork due to the 10-150 µm pores contained in the biodegradable multifilament false twist yarn, and also has superior internal connectivity due to the extra bulk of 150-1000% imparted to the biodegradable multifilament false twist yarn that is fixedly inserted into the circular knitwork. Accordingly, the support body is optimized for cell culturing, cell delivery, and drug delivery since it has a stable three-dimensional structure.
Abstract:
The present invention relates to a three-dimensional porous support body, and to a method for manufacturing same. The three-dimensional porous support body of the present invention has a structure in which a biodegradable multifilament false twist yarn to which extra bulk is imparted is inserted into a tube-shaped circular knitwork consisting of biodegradable polymers. The three-dimensional porous support body is porous due to the network structure of the circular knitwork due to the 10-150 µm pores contained in the biodegradable multifilament false twist yarn, and also has superior internal connectivity due to the extra bulk of 150-1000% imparted to the biodegradable multifilament false twist yarn that is fixedly inserted into the circular knitwork. Accordingly, the support body is optimized for cell culturing, cell delivery, and drug delivery since it has a stable three-dimensional structure.
Abstract:
The present invention relates to a tongue module for a robot which is installed in an android face robot formed to have a similar external appearance to a human face and to express feelings. The tongue module includes a tongue body made of composite silicon material and formed to have smooth texturing; a front and rear driving unit configured to move the tongue body in front and rear directions by using a crank arm and a first servo motor; an up and down driving unit configured to bend the tongue body in up and down directions by using wires and a second servo motor; and a linear rail assembly configured to move the tongue body in a straight line.
Abstract:
The present invention relates to a method for preparing a furfuranol-based compound and a 2-furancarboxylic acid-based compound by reacting a furfural-based compound with the hydroxide of an alkali metal or alkaline earth metal using an ionic liquid as a solvent. According to the present invention, an eco-friendly method for preparing a furfuranol-based compound and a 2-furancarboxylic acid-based compound may be provided, in which water is not used as a reaction solvent to thus prevent the generation of wastewater from the reaction, and an ionic liquid, which can be recovered and reused with ease after being used as a solvent, is used as a reaction solvent.
Abstract:
The present invention relates to an apparatus for measuring perviousness to water vapor. According to the present invention, the perviousness to water vapor a sample fabric can be measured while varying temperature, humidity, and air-current conditions via an automated system.
Abstract:
The present invention relates to a method for manufacturing a substrate for preventing the formation of a biofilm using colloidal nonoparticles, to a substrate manufactured thereby, and to a sensor for testing water quality comprising the substrate. More particularly, the present invention relates to a method for manufacturing a substrate for preventing the formation of a biofilm by arranging colloidal nanoparticles on a substrate and forming holes and a porous structure on the substrate. The present invention also relates to a substrate for preventing the formation of a biofilm consisting of a substrate, a plurality of holes formed on the upper surface of the substrate, and a porous structure formed over the entirety of the upper surface of the substrate and in the holes. The present invention also relates to a sensor for testing water quality comprising the substrate.
Abstract:
The present invention relates to a metal catalyst composition for producing furfural derivatives from raw materials of lignocellulosic biomass, and to a method for producing furfural derivatives using the composition. The metal catalyst composition comprises ruthenium chloride (RuCl3) and chromium chloride (CrCl2), wherein the chromium chloride (CrCl2) is 300 to 500 weight parts with respect to 100 weight parts of ruthenium chloride (RuCl3). According to the present invention, metal catalysts of multiple types are mixed at an optimum ratio, thus producing furfural derivatives from raw materials of lignocellulosic biomass through a simple reaction process performed in a single reaction device, which might otherwise require multistep processes such as pretreatment and simple saccharification processes as in conventional processes for producing furfural derivatives.