摘要:
Provided are a turbo generator and a fuel cell system having the same. The turbo generator includes a housing; an air inlet formed on the same axis as the axis of the housing on a first side of the housing; a rotor, a stator winding unit, impeller, and a turbine wheel mounted in the housing; and a tie-shaft installed to pass through the impeller and the turbine wheel and rotatably and integrally support the rotor.
摘要:
Provided are a turbo generator and a fuel cell system having the same. The turbo generator includes a housing; an air inlet formed on the same axis as the axis of the housing on a first side of the housing; a rotor, a stator winding unit, impeller, and a turbine wheel mounted in the housing; and a tie-shaft installed to pass through the impeller and the turbine wheel and rotatably and integrally support the rotor.
摘要:
An elastic valve and a microfluidic device including the same are provided. The elastic valve includes a channel dented by external pressure so as to be elastically restituted; and a plurality of channel closing protrusions, which comprise elastomer as a material, which are protruded from at least one inner side surface of the channel toward an opposite inner side surface, and which are separated from each other so as not to interrupt a flow of fluids, wherein, when external pressure is applied in order to dent the channel, the plurality of channel closing protrusions are deformed so as to be elastically restituted, thereby closing the channel.
摘要:
A micro-fluid reaction vessel includes an upper plate formed of an elastomer, a lower plate adhered to the upper plate, a micro-chamber and a micro-channel formed on an inner surface of the upper plate facing the lower plate and an inlet hole and an outlet hole formed in the upper plate and through which a fluid flows into or out of, respectively. The micro-channel is constructed to be closed by pressure applied to the upper plate and elastically restored when the pressure is not applied. A micro fluid reaction method uses the micro fluid reaction vessel and a method of manufacturing forms the microfluid reaction vessel.
摘要:
Provided is a method for quantifying an initial concentration of a nucleic acid from a real-time nucleic acid amplification data. Nucleic acid (DNA or RNA) extracted from organism or virus is amplified using an enzyme. Then, the initial concentration of the nucleic acid is found by calculating the characteristic amplification cycle number or the characteristic amplification time at which the fluorescence intensity of the nucleic acid subtracted by the background fluorescence intensity of the nucleic acid has half of its maximum value, or the characteristic amplification cycle number or the characteristic amplification time at which the amplification efficiency has the maximum or the minimum value, or the prior-to-amplification fluorescence intensity of the nucleic acid subtracted by the background fluorescence intensity of the nucleic acid. Accordingly, the initial concentration of the nucleic acid can be calculated without differentiation or integration.
摘要:
Provided are an optical system for analyzing multi-channel samples which uses a mirror rotating at high speeds and an aspherical mirror, and a multi-channel sample analyzer employing the optical system. The optical system for analyzing multi-channel samples, includes a light source unit which emits light traveling along an optical axis; a semi-spheroid aspherical mirror disposed in rotational symmetry about the optical axis; and an inclined mirror which reflects the light exiting the light source unit to the semi-spheroid aspherical mirror, while rotating about the optical axis, wherein an opening is formed in the center of the semi-spheroid aspherical mirror such that the light exiting the light source unit enters the inclined mirror through the semi-spheroid aspherical mirror.
摘要:
Provided are a microfluidic device for separating polarizable analytes via dielectrophoresis, the device including: a microchannel including a membrane having nano- to micro-sized pores; at lest two electrodes generating a spaciously non-uniform electric field in the nano- to micro-sized pores when an AC voltage is applied; and a power source applying the AC voltage to the electrodes, and a method of separating polarizable target materials using the device.
摘要:
A resolution enhancement apparatus and method of a laser printer using a modulated laser beam is adapted to an image forming apparatus of the laser printer, and includes a memory for storing sequentially input image data in a sequential scanning method, rearranging a scanning line order and generating an M.times.M sample window, M being an integer, a first processor for producing (M-2).sup.2 3.times.3 sample windows using the M.times.M sample window, determining which mask pattern among a plurality of mask patterns is coincident with each of the produced 3.times.3 sample windows, and outputting predetermined data with respect to direction and density of the image data according to the mask pattern, a second processor for determining to which group among a plurality of groups the image data belongs by using the predetermined data output from the first processor, and altering the image data into predetermined image data corresponding to the group to output the altered data, and a signal modulator for modulating the data output from said second processor into a predetermined pattern and outputting the modulated pattern, thereby minimizing the use of memory space by using four row line memories and enhancing resolution by expressing finite shapes according to nineteen modulation patterns while eliminating the more severe portions of pixel magnitude variation (step phenomenon).
摘要:
A microfluidic apparatus includes at least one microfluidic device in which flow paths are formed, a device receiving layer including a receiving part into which the at least one microfluidic device is inserted and at least one pattern layer on which patterns connected to the flow paths of the at least one microfluidic device are formed, wherein each of the at least one pattern and device receiving layers is bonded to an adjacent layer to prevent fluid leakage.
摘要:
Provided are a FET-based sensor for detecting an ionic material, an ionic material detecting device including the FET-based sensor, and a method of detecting an ionic material using the FET-based sensor. The FET-based sensor includes: a sensing chamber including a reference electrode and a plurality of sensing FETs; and a reference chamber including a reference electrode and a plurality of reference FETs. The method includes: flowing a first solution into and out of the sensing chamber and the reference chamber of the FET-based sensor; flowing a second solution expected to contain an ionic material into and out of the sensing chamber while continuously flowing the first solution into and out of the reference chamber; measuring a current in a channel region between the source and drain of each of the sensing and reference FETs; and correcting the current of the sensing FETs.