Abstract: Disclosed is a process for recovery of uranium from a spent nuclear fuel using a carbonate solution, characterized by excellent proliferation resistance of preventing leaching of transuranium element (TRU) nuclides such as Pu, Np, Am, Cm, etc. from the spent nuclear fuel as well as environmental friendliness of minimizing waste generation, wherein a highly alkaline carbonate solution is used to separate uranium alone from the spent nuclear fuel.

Abstract: A reciprocating compressor includes: a cylinder installed inside a casing and having a space therein; a piston disposed inside the cylinder; an inner stator fixed at an outer circumference of the cylinder; a magnet fixed at an outer circumference of the inner stator; and an outer stator disposed to maintain a certain distance from an outer circumference of the magnet. Accordingly, the number of components is reduced thus to reduce a manufacturing cost, and performance can be also improved.

Abstract: The present invention discloses a linear compressor in which a piston is linearly reciprocated inside a cylinder, for sicking a refrigerant into a compression space between the piston and the cylinder, and compressing and discharging the refrigerant, and especially, a structure of discharging the refrigerant for the linear compressor which can reduce a pulsation of a high pressure discharged refrigerant, by making the refrigerant compressed in the compression space flow from a sub-discharge space with a relatively small volume to a sub-discharge space with a relatively large volume in a discharge chamber. As a result, the structure of discharging the refrigerant for the linear compressor can efficiently reduce noise and vibration.

Abstract: A discharging valve assembly for a reciprocating compressor includes a discharging cover coupled with a front frame so as to cover a cylinder in which a piston is inserted; a discharging valve inserted in the discharging cover, and opening/closing an inner space of the cylinder where gas is compressed; and an unbalancedly and elastically supporting means elastically supporting the discharging valve so that contact pressure applied to the discharging valve when the valve comes in contact with the contact surface of the cylinder is unbalanced. Accordingly, the discharging valve assembly can improve discharging efficiency of gas compressed in the cylinder and discharged, and can minimize noise generated when the discharging valve comes in contact with the cylinder while moving.

Abstract: A reciprocating compressor includes: a cylinder installed inside a casing and having a space therein; a piston disposed inside the cylinder; an inner stator fixed at an outer circumference of the cylinder; a magnet fixed at an outer circumference of the inner stator; and an outer stator disposed to maintain a certain distance from an outer circumference of the magnet. Accordingly, the number of components is reduced thus to reduce a manufacturing cost, and performance can be also improved.

Abstract: A discharging valve assembly for a reciprocating compressor includes a discharging cover coupled with a front frame so as to cover a cylinder in which a piston is inserted; a discharging valve inserted in the discharging cover, and opening/closing an inner space of the cylinder where gas is compressed; and an unbalancedly and elastically supporting means elastically supporting the discharging valve so that contact pressure applied to the discharging valve when the valve comes in contact with the contact surface of the cylinder is unbalanced. Accordingly, the discharging valve assembly can improve discharging efficiency of gas compressed in the cylinder and discharged, and can minimize noise generated when the discharging valve comes in contact with the cylinder while moving.

Abstract: Disclosed herein is a linear compressor. The linear compressor comprises a cylinder provided at one side thereof with an outlet part, and a piston reciprocated in the cylinder by means of a liner motor for compressing a fluid. The piston has a fluid flow channel formed therethrough. The fluid flow channel communicates with the interior of the cylinder. To the rear part of the piston is fixedly attached a first muffler so that the first muffler is linearly moved along with the piston. The first muffler has a fluid flow channel formed therein. The fluid flow channel of the first muffler communicates with the fluid flow channel of the piston. The first muffler also has a noise-reducing space defined therein. In the compressor is fixedly mounted a second muffler such that the inner volume of the second muffler is variable as the first muffler is linearly moved. The second muffler has a fluid flow channel formed therein.

Abstract: Disclosed is a method for manufacturing a catalytic oxide anode using high temperature sintering, which can increase a decomposition efficiency of an organic substance by improving a performance of the catalytic oxide anode (Ru oxide anode, Ir oxide anode) used in a water treatment, and in particular, to a method for manufacturing a catalytic oxide anode, in which the oxide anode is sintered at 600° C. or higher, and a TiO2-screening layer is formed between a titanium base metal and a catalytic oxide layer to prevent a lowering of the oxide anode activity owing to an oxidation of the titanium base metal caused by sintering the oxide anode at high temperature and a solid diffusion of an oxide into an anode surface.

Abstract: Disclosed is a fiber bundle contactor in which fibers are packed in high density within a column. When two liquid phases flowing in parallel, one of which contains the desired components, are contacted with the entryway of the highly packed fiber bundle, the two liquid phases are very thinly dispersed among gaps around the respective fibers by capillary action induced by the clearance between the fibers. By means of this capillary action, the two liquid phases are maintained as a continuous stream, and the two phases are brought into very intimate contact, thereby ensuring a very large surface area for liquid-liquid extraction to proceed.

Abstract: The present invention relates to a rapid and simple method for mass production of taxol from the cell culture of Taxus genus plant with a high purity and recovery. The method for mass production of taxol from Taxus genus plant of the present invention, comprises the steps of: (i) organic solvent extraction of biomass from Taxus genus plant to obtain a crude extract; (ii) synthetic adsorbent treatment of the crude extract and filtration to give filtrate; (iii) addition of hexane to the filtrate to precipitate crude taxol; (iv) fractional precipitation of the crude taxol in a mixture of alcohol and water and vacuum drying the precipitate to obtain taxol powder; and, (v) high performance liquid chromatography of the taxol powder. According to the method of the present invention, taxol of over 99% purity can be simply obtained from Taxus genus plant with a high recovery of over 90%.

Abstract: An electrolyzing apparatus using a circulating capillary tube type mercury bundled electrode is disclosed, in which the advantage of mercury that it has a high overpotential for hydrogen evolution reaction compared with the general solid metals is preserved, and the disadvantage of mercury that it cannot be so shaped as to have a large contact area is overcome. That is, the mercury contact area is maximized. The oxidation and reduction reactions which occur in the vertically circulating capillary tube type mercury bundle electrode electrolyzing apparatus can be defined by a simple formula so as to quantize their analysis. Based on this formula, the stability checking, and the adjustment of the oxidation state of metal ions in the solution can be carried out in a rapid and continuous manner. Further, the concentration of the metal ions and the oxidation state of the metal ions within the solution can be analyzed in the same manner.