Abstract: A power supply device is provided. The power supply device includes: a transformer configured to include first and second windings; a half bridge circuit configured to be connected to first and second nodes and both ends of the first wiring; and a full bridge circuit configured to be connected to third and fourth nodes and both ends of the second winding. Since the leakage inductance of the transformer and the bridge capacitor of the half bridge circuit form a direct current (DC) resonant tank, switching loss that may occur during the turning on or off of switches can be reduced.

Abstract: Provided are embodiments of a method of synthesizing nano scale electrode materials using an ultrafast combustion technique and nano scale electrode materials synthesized using the method. The method does not require a process of annealing reaction products required for synthesis of electrode materials or any other additional processes, such as cleaning, filtering, and drying processes, so that it can take only several seconds to several minutes to obtain a resultant product.

Abstract: A non-rotational CT system according to the present invention comprises: a plurality of X-ray generation units which are radially arranged by being spaced at certain intervals around an inspected object, and in which position correcting sensors are equipped on one side thereof; a plurality of X-ray detection units which are arranged in separated spaces between the X-ray generation units, are provided alternately with the X-ray generation units, and in which position correcting sensors are equipped on one side thereof; a control unit which receives signals from the position correcting sensors equipped in the X-ray generation units and the X-ray detection units, and adjusts the positions of each of the X-ray generation units and the X-ray detection units which face each other to precisely correspond with each other; a data processing unit which stores two-dimensional X-ray images obtained from the X-ray detection units, and applies an image interpolation technique to calculate two-dimensional X-ray images betwe

Abstract: The present invention relates to an operation control system for spirally operating a capsule endoscope along a tubular organ, and a capsule type endoscope system comprising the same. The operation control system for a capsule endoscope of the present invention comprises: a magnetic field generation portion (100) comprising a first coil unit (110) provided on three orthogonal axes to generate a magnetic field and a second coil unit (120) comprising one coil structure for generating a magnetic field gradient; and a mechanical coil driving portion (130) for three-dimensionally rotating the second coil unit (120), thereby generating a rotating magnetic field and the magnetic field gradient. Therefore, it is possible to simplify the operation control system for a capsule endoscope by forming the rotating magnetic field and the magnetic field gradient for a spiral motion of a capsule endoscope only with a minimum coil system.

Abstract: The present invention relates to a histogram equalization apparatus using histogram compression, and the objective of the present invention is to provide an equalization apparatus which highly compresses a histogram of an input image having a brightness level with a high frequency and lowly compresses the histogram having a brightness level with relatively a lower frequency thereby maintaining the characteristics of the input image, while refraining excessive changes in brightness, and enhancing the contrast more effectively by controlling the strength of a compression ratio according to the characteristics of the input image.

Abstract: The present invention relates to an apparatus for improving fogged image using user-controllable root operator, and the purpose of the present invention is to provide an apparatus which can provide a clean image by removing the effect that color sharpness and brightness contrast of an image taken by a camera are decreased by scattering and absorption by particles such as fog, smoke, cloud, and etc. in the air and mixture with other reflected light such as the sky and the earth.

Abstract: The present invention relates, in general, to a microrobot system for intravascular therapy and, more particularly, to a microrobot system for intravascular therapy, which removes thrombus, clots and occlusions that are clogging blood vessels using the fast rotary power of a spherical microrobot having protrusions, thus treating clogged blood vessels. The microrobot system for intravascular therapy according to the present invention includes a spherical microrobot unit (100?) including a magnet having an arbitrary magnetization direction and having protrusions formed on a surface thereof. An electromagnetic field generation unit (200) sets an alignment direction and a locomotion direction of the microrobot unit to arbitrary directions in the 3D space, generates magnetic fields, and then drives the microrobot unit so that the microrobot unit is rotated by itself or is propelled in the locomotion direction. An imaging unit (300) captures an X-ray image and then tracking a location of the microrobot unit.

Abstract: Provided is a novel method for preparing metabolites of atorvastatin using bacterial cytochrome P450, and a composition therefor, and more particularly, a composition for preparing 2-hydroxylated product of 4-hydroxylated product from atorvastatin including bacterial cytochrome P 450 BM3 (CYP102A1), CYP102A1 mutants, and chimeras derived from the CYP102A1 mutants, a kit therefor, and a method for preparing thereof.

Abstract: A mobile terminal and touch recognizing method therein are disclosed, by which a multi-touch can be recognized. The present invention includes receiving a plurality of touches simultaneously using a touchscreen, consecutively receiving a plurality of images including a plurality of the received touches for a predetermined time using a camera provided under the touchscreen, determining patterns and pattern changes of a plurality of the touches included in a plurality of the images, respectively, and recognizing a gesture by a plurality of the touches in accordance with a result of the determining step. Moreover, the touch pattern includes at least one selected from the group consisting of a touch number, a touch point, a touch size and a touch figure.

Abstract: Provided are a newly identified colon cancer marker and a diagnostic kit using the same. More particularly, the present invention relates to an identified colon cancer specific marker, a composition and a kit including agents determining presence of the marker, and a method of diagnosing colon cancer using the same. The diagnostic marker according to the present invention capable of detecting metastasis and prognosis of colon cancer may provide useful information for the treatment and management of colon cancer and be used for the development of colon cancer-specific anticancer agents.

Abstract: A system for controlling actuation of a capsule endoscope includes a receiving unit receiving an image transmitted from the capsule endoscope; a coil unit generating a magnetic field for actuating the capsule endoscope by using current applied thereto; a power supply unit supplying power to the coil unit; and an actuation controller control the current applied to the coil unit and a coil rotational motor for adjusting of a posture and the location of the capsule endoscope based on the identified lesion or location of the capsule endoscope, wherein the coil unit includes a pair of Helmholtz coils and a pair of Maxwell coils that are fixedly disposed on a main axis; and a pair of uniform saddle coils and a pair of gradient saddle coils that are located inside the pair of the Helmholtz coils and the pair of the Maxwell coils to rotate around the main axis.

Abstract: The present invention provides an X-ray needle module for local radiation therapy containing: an X-ray generating part supplied with external electric power; and an X-ray needle forming part which collects the X-rays generated by the X-ray generating part and extracts the collected X-rays into high-intensity short-wavelength parallel X-rays so as to form an X-ray needle. The X-ray needle forming part includes a housing with an entrance hole at one surface through which the X-rays generated by the X-ray generating part enter and an exit hole at another surface through which the X-ray needle exits, the X-ray needle, provided in the housing, which collects the X-rays generated by the X-ray generating part and forms the X-ray needle of the high-intensity short-wavelength parallel X-rays and a position controller, provided at a leading end of the X-ray mirror.

Abstract: The present invention provides a method for providing an image having visibility which is improved by removing fog or smoke from an image of which the quality is reduced due to the fog or the smoke. To this end, the present invention provides an estimation model used for obtaining, from an input image, an image from which the fog is removed, calculates a transmission rate indicating a ratio by which the fog is included in the original image by using the estimation model, and obtains an image of which the fog is removed using the calculated transmission rate. The method proposed in the present invention does not commonly use a filter and only uses calculation of a pixel unit, so that a back lighting effect is not generated, real time processing is possible due to a small amount of calculation, and a good image is obtained even by performing a process using only a luminance image.

Abstract: There is provided an even-level inverter, including: a voltage-dividing circuit dividing input DC power into an even number of voltage levels; a plurality of switching devices connected to individual nodes of the voltage-dividing circuit having the even number of voltage levels; and a bidirectional switching device connected to the individual nodes of the voltage-dividing circuit through at least one of the plurality of switching devices and including at least two transistors. According to the present invention, the bidirectional switching device is implemented without a diode to thereby reduce conduction loss caused due to an anti-parallel diode included in the related art bidirectional switching device, and a neutral point of the voltage-dividing circuit is electrically separated from the switching devices to thereby control reactive power.

Abstract: The present invention relates to an image-based, patient-specific medical spinal surgery technique and to a spinal prosthesis used in the surgery, and particularly, to an image-based, patient-specific medical spinal surgery technique and to a spinal prosthesis which are intended to solve a problem of damage to a spine caused by installing a spinal prosthesis used in spinal surgery, by introducing an image of a patient to manufacture an insertable spinal prosthesis that is customized for a shape of a spine of an individual patient in a polymer-based material.

Abstract: An electrode material obtained using a polyol process and a synthesis method is provided. The synthesis method includes steps of preparing a mixed solution by mixing a transition metal compound, a polyacid anionic compound and a lithium compound with a polyol solvent; and obtaining a resultant product by reacting the mixed solution in a heating apparatus. There is an advantage in that the electrode material, which has crystallinity due to a structure such as an olivine structure or a nasicon structure, can be synthesized using a polyol process at a low temperature without performing a heat treatment proces. The nanoelectrode material synthesized by the method has a high crystallinity, uniform particles, and a structure having a diameter ranging from several nanometers to several micrometers. Further, the electrode material has a high electrochemical stability.

Abstract: A method for manufacturing a drug-releasing stent is provided. The method includes providing a titanium precursor, a carrier gas and a reactant gas in a plasma vacuum chamber, and generating a plasma for 1 to 6 hours to form a titanium oxide thin film on the surface of a stent. The method further includes providing steam or oxygen and hydrogen in the plasma vacuum chamber and generating a low-temperature plasma for 10 minutes to 2 hours to modify the surface of the titanium oxide thin film. The method further includes reacting the titanium oxide thin film of the stent with a drug in an acidic solution and under an inert gas atmosphere at room temperature to 100° C. for 30 minutes to 4 hours to attach the drug.

Abstract: Provided is a bacterium-based microrobot, wherein bacteria are attached to a part of a surface of a microstructure including at least one or more magnetic particle, for actuating a bacterium-based microrobot more effectively.

Abstract: Provided is a method of analyzing performance according to inter-cell interference control based on coordinated multipoint (CoMP) communication in a heterogeneous network (HetNet) to check that performance is enhanced by applying a variety of scheduling and pre-coding based on the CoMP communication in a HetNet environment of a Long Term Evolution-Advanced system to analyze the performance. The method applies a variety of scheduling and pre-coding based on coordinated beamforming scheme of CoMP communication technology, where the scheduling includes coordinated scheduling technique and the precoding includes QR decomposition, Tomlinson-Harashima precoding, polar decomposition, and singular value decomposition techniques, and compares and analyzes performances when there are only macrocells or when there are picocells at the boundaries of the macrocells, thereby checking that the gain is enhanced.

Abstract: A high efficiency plant expression promoter from Capsicum annuum serine hydroxymethyl transferase gene and uses thereof. This high efficiency plant expression promoter and 5?-untranslated region (5?-UTR) from Capsicum annular, serine hydroxymethyl transferase gene, a high efficiency plant expression vector having the same, a plant transformed with said vector, a process for high efficiency expression of a foreign gene by using said vector and a transformed plant which expresses with high efficiency a foreign gene based on said process and seeds of the transformed plant.