Gachon University is an academic institute located in South Korea. The current structure of Gachon university is the result of a merger between four existing universities. Gachon University of Medicine and Science and Gachon-gil College merged in 2007, Kyungwon University and Kyungwon College merged in 2007, and Gachon University of Medicine and Science and Kyungwon University merged in 2012. Gachon University has three campuses for undergraduates, the Global Campus located in Seongnam, satellite campuses on Ganghwa Island and in Yeonsu-dong, and the School of Medicine in Guwol-dong, Namdong-gu, Incheon, South Korea. Gachon University signed a strategic partnership with Hawaii Pacific to allow students to study abroad. " Wikipedia.
Gachon University | Date: 2015-12-15
A junctionless field-effect transistor is provided and has an ultra-thin low-crystalline silicon channel. A fabrication method thereof also is provided for enabling greatly improved economics by significantly reducing the process costs while having electrical characteristics similar to those of the one formed on an SOI substrate by source/channel/drain regions formed in a junctionless ultra-thin low-crystalline silicon layer that has lower crystallinity than that of single-crystal silicon and that has a thickness of 20 nm or less on a bulk silicon substrate instead of an expensive SOI substrate.
Seoul National University and Gachon University | Date: 2015-07-13
The present invention relates to a resistive random access memory device having a nano-scale tip, memory array using the same and fabrication method thereof. Especially, the present invention provides a technique forming a bottom electrode having an upwardly protruding tapered tip structure through etching a semiconductor substrate in order that an electric field is focused on the tip of the bottom electrode across a top electrode and that a region where conductive filaments are formed is maximally minimized or localized.
Seoul National University and Gachon University | Date: 2016-06-15
A resistive random access memory device is provided with a tunneling insulator layer between a resistance change layer and a bottom electrode. Thus, it is possible: to raise the selection (on/off) ratio by the current of a direct tunneling induced by low voltage in the unselected cell and the current of an F-N tunneling induced by high voltage in the selected cell, to efficiently suppress the leakage current in the read operation, to make a low current operation less A level by controlling the thickness of the tunneling insulator layer, and to be simultaneously fabricated together with circuit devices by forming the bottom electrodes (word lines) with a semiconductor material.
Gachon University | Date: 2015-10-29
Disclosed is a network-based drug efficacy-assessing method, and an apparatus. The method comprises: computing a score for association between drugs and diseases by means of at least one of drug-adjacency-based inference, disease-adjacency-based inference, and module-distance-based inference; building a classifier for determining whether the drug is associated with the disease, using machine learning in which the score is employed as a feature; and determining the association between the drug and the disease by use of the classifier. The method and apparatus can search for drug-disease relation in which a drug can exert its pharmaceutical efficacy on a disease on the basis of a network constructed from protein interaction databases and protein-gene association databases, and can evaluate the molecular interaction of the drug to find out new pharmaceutical effects of the drug with higher precision and sensitivity, whereby a time and cost for the development of new drugs can be reduced.
Gachon University | Date: 2014-05-28
A first off resonance radio frequency (RF) pulse and a second off resonance RF pulse having a phase difference of 180 degrees from the first off resonance RF pulse are applied, one or more auxiliary gradient magnetic fields for offsetting inhomogeneity of a main magnetic field generated by applying the first and second off resonance RF pulses are applied, and magnitudes and signs of the auxiliary gradient magnetic fields are appropriately adjusted. Therefore, artifacts generated due to inhomogeneity of a main magnetic field in an imaging method using an off resonance RF pulse may be removed. When this method is applied to an imaging method using a spatial pre-saturation RF pulse, the phenomenon in which spins excited by the pre-saturation RF pulse are excited again by the off resonance RF pulse to return signals, such that undesired signals overlap and appear in an ultimately-obtained signal, may be removed.
Univera Inc. and Gachon University | Date: 2014-07-11
The present invention relates to a composition for preventing skin aging containing aloesin or a derivative thereof. The aloesin or the derivative thereof, according to the present invention reduces cytotoxicity and inhibits a MMP-1 level and increases PIP levels and procollagen type 1, in normal human dermal fibroblasts (NHDF) after ultraviolet irradiation, and thus is particularly effective for preventing or treating skin photoaging induced by ultraviolet irradiation.
Gachon University and Gil Medical Center | Date: 2014-10-08
The present invention provides an illumination chopper which allows a user to operate on the nucleus of a crystalline lens with a small piece while securing visibility through a chopper which is mounted at one end of an illuminator to form a predetermined angle with the illuminator.
Gachon University and Gil Medical Center | Date: 2015-07-08
The present invention relates to a method of manufacturing a microarray substrate having improved reliability and mass-production properties using a vapor of a surface-reforming material, and the method of manufacturing the microarray substrate according to the present invention includes washing a base substrate, supplying the vapor of the surface-reforming material into a container to which the base substrate is provided, and coupling the vapor of the surface-reforming material to a surface of the base substrate to form a self-assembed monolayer.
Gachon University and Gil Medical Center | Date: 2016-03-02
The present invention relates to a device for measuring bladder pressure, comprising: a measurement rod inserted into the abdomen of a user to measure both abdomen pressure and bladder pressure; and a body unit provided to be worn on the waist of the user and electrically connected to the measurement rod so as to calculate and store urinary detrusor pressure measured by subtracting a measurement abdomen pressure from a measurement bladder pressure measured by the measurement rod.
Gachon University | Date: 2014-04-01
A flipped fitting method that performs a flipped curve fitting on a maximum of 256 MRI images obtained at different echo times using an EPI image which obtains a plurality of MRI images at a plurality of different echo times within a TR period after application of an excitation RF pulse. Then, T2* values are fitted based on a sufficient amount of acquired TE images, such that it is possible to provide much more accurate T2* values than these provided by underestimated or overestimated fitting by the existing method which is based on only 12 images and to obtain rapid and accurate data without nerve stimulation or acoustic noise. Further, the flipped fitting method is more suitable and accurate for showing the real T2* values.