GIST , formerly known as the Kwangju Institute of Science and Technology , is a leading research-oriented institute of Korea located in Gwangju, South Korea. Students in GIST can attend classes in the institute and participate in research. Wikipedia.
Gwangju Institute of Science and Technology | Date: 2016-10-07
The present disclosure relates to an enzyme-immobilized porous membrane and a preparation method of antibiotics using the same, and more specifically, to an enzyme-immobilized porous membrane prepared by immobilizing a specific enzyme through dead-end filtration, and a preparation method of antibiotics with a high yield using the enzyme-immobilized porous membrane. According to various exemplary embodiments of the present disclosure, the enzyme capable of promoting the synthesis reaction of the antibiotic substance is able to be stably immobilized in the porous membrane by passing the solution of enzyme through the membrane. In addition, it is possible to provide antibiotics with a high yield by preparing the antibiotics by passing the reactant solution through the enzyme-immobilized porous membrane.
Gwangju Institute of Science and Technology | Date: 2016-02-11
A method of detecting a particular abnormal sound in an environment with background noise is provided. The method includes acquiring a sound from a microphone, separating abnormal sounds from the input sound based on non-negative matrix factorization (NMF), extracting Mel-frequency cepstral coefficient (MFCC) parameters according to the separated abnormal sounds, calculating hidden Markov model (HMM) likelihoods according to the separated abnormal sounds, and comparing the likelihoods of the separated abnormal sounds with a reference value to determine whether or not an abnormal sound has occurred. According to the method, based on NMF, a sound to be detected is compared with ambient noise in a one-to-one basis and classified so that the sound may be stably detected even in an actual environment with multiple noises.
Gwangju Institute of Science and Technology | Date: 2016-10-12
Disclosed herein are nanoparticles for diagnosis or treatment of tumors. The nanoparticles include: (a) a core including a Prussian blue dye; and (b) a shell obtained by partially or completely coating a surface of the Prussian blue core with albumin, thereby diagnosing a tumor by a nuclear magnetic resonance imaging apparatus and a near-infrared fluorescence imaging apparatus and necrotizing a tumor by a combined photothermal-photodynamic effect.
Gwangju Institute of Science and Technology | Date: 2016-10-17
Disclosed herein is a seawater desalination apparatus using pressure-assisted forward osmosis and reverse osmosis. The seawater desalination apparatus includes: a forward osmosis unit receiving seawater and sewage; and a reverse osmosis unit receiving diluted seawater from the forward osmosis unit, wherein the forward osmosis unit comprises a first train arrangement and a second train arrangement, and the number of trains disposed in the first train arrangement is different from the number of trains disposed in the second train arrangement.
Gwangju Institute of Science and Technology | Date: 2016-10-31
Disclosed herein are a capacitive deionization electrode including activated waste coffee grounds, a method of manufacturing the same, and a water-treatment apparatus including the same. The capacitive deionization electrode includes activated waste coffee grounds having a large specific surface area and an appropriate pore size distribution. The water-treatment apparatus includes the capacitive deionization electrode including activated waste coffee grounds, thereby exhibiting improved adsorption/desorption capacity/rate and thus excellent ion removal efficiency. The capacitive deionization electrode is manufactured using activated waste coffee grounds that have sufficiently high adsorption/desorption efficiency to replace activated carbon generally used as a material for an electrode of a typical capacitive deionization water treatment system. Thus, waste coffee grounds, which are practically used only in manufacture of aromatics/absorbents, can be used as a material for an electrode, thereby improving economics in manufacture of carbon electrodes.
Gwangju Institute of Science and Technology | Date: 2017-05-10
The present invention relates to a composition for inducing cell reprogramming. The indazole derivative compound contained in the composition of the present invention shows an improved biological profile and at the same time can perform efficient cell reprogramming. In addition, unlike conventional compounds (e.g. riversine or BIO) for inducing low-molecular cell reprogramming, the indazole derivative compound of the present invention does not show cytotoxicity and thus is expected to have high growth in the market of cell therapy products when clinically applied. Conventional indazole derivative compounds have never known as a use for cell reprogramming. Compared with conventional indazole derivative compounds, the compound of the present invention has a great cell reprogramming ability while having no or little cytotoxicity.
Gwangju Institute of Science and Technology | Date: 2016-11-11
An apparatus and method for measuring an erythrocyte sedimentation rate based on a change in conductivity of blood over time. The apparatus for measuring an erythrocyte sedimentation rate may include: a chamber for holding blood; a pair of electrodes being partially or completely brought into contact with the blood; and a conductivity meter measuring the conductivity through the pair of electrodes. The apparatus and method according to the present invention are less time-consuming than the Westergren method and can acquire a variety of information (for example, hematocrit, dynamics of the sedimentation rate and aggregation of erythrocytes, a relationship between the sedimentation rate and aggregation of erythrocytes, and the like).
Gwangju Institute of Science and Technology | Date: 2016-11-18
Disclosed herein is a method of enhancing speech. The method includes calculating a far-end speech spectrum by performing fast Fourier transformation of a signal received by a far-end user, calculating a background noise spectrum collected by a microphone provided to a mobile device of a near-end user; calculating a gain from the far-end speech spectrum and the background noise spectrum using a speech intelligibility index-based module, and deriving an enhanced far-end speech spectrum by applying the gain to the far-end speech spectrum, wherein, in calculating a gain using a speech intelligibility index-based module, a power budget used for transmitting and receiving a speech signal is set to vary with the background noise spectrum.
Gwangju Institute of Science and Technology | Date: 2016-10-28
Disclosed herein are a method of manufacturing multiple microelectrodes on a syringe needle and a syringe needle manufactured by the same. The syringe needle includes multiple interdigitated electrodes (IDEs) placed on a surface of a portion of the syringe needle spaced apart from a tip of the syringe needle, a pair of interconnection lines for electrical connection of the multiple IDEs, the interconnection lines electrically connecting a first group of the IDEs on the left and a second group of the IDEs on the right through one end of each of the interconnection lines, and a conductor for electrical connection to a PCB provided to a main body of a syringe at the other end of each of the interconnection lines, wherein the multiple IDEs are basically formed of a material for a dielectric layer and are alternately arranged at a first distance from one another.
Gwangju Institute of Science and Technology | Date: 2016-11-23
Disclosed are a composite membrane and a method of manufacturing the same. More particularly, disclosed are a composite membrane, which includes a porous support and an active layer deposited on a surface of the porous support, and a method of manufacturing the composite membrane using concentration polarization of a network-nanoparticle-dispersed organic sol-containing solution on a surface of the porous support.