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Now showing items 1 - 16 of 132

  • ELECTRONIC DEVICE AND METHOD FOR DELIVERING MESSAGE BY SAME

    Various embodiments of the present invention relate to an electronic device and a method for delivering a message by the same. The electronic device may comprise: a camera; at least one processor functionally connected to the camera; and a memory for storing at least one program configured to be executable by the at least one processor, wherein the program comprises instructions configured to: capture an image of a sender by activating the camera in response to detection of a message input by the sender; analyze the captured image of the sender and the input message; determine a recipient and an output pattern on the basis of the result of the analysis; check whether the recipient is recognized; and when the recipient is recognized, deliver the message to the recognized recipient on the basis of the determined output pattern. Various other embodiments are possible.
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  • ANTENNA AND ELECTRONIC DEVICE INCLUDING THE SAME

    According to various example embodiments, an electronic device including: a housing; a conductive member formed as a part of the housing or disposed in the housing as at least a part of the housing; a communication circuit electrically connected to a first region of the conductive member; a ground electrically connected to a second region of the conductive member spaced from the first region of the conductive member; a tunable circuit interposed in an electric connection path electrically connected with the ground in a third region of the conductive member, the third region being located between the first region and the second region of the conductive member; and at least one processor configured to generate a control signal based on a current mode of the electronic device and to provide the control signal to the tunable circuit.
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  • KINETIC CONTROL APPARATUS

    The present invention relates to a kinetic control apparatus, more specifically to a kinetic control apparatus for imparting directionality to and expanding the movement range for props used for stage display. The present invention is characterized by comprising: a plurality of actuators which can be vertically height-controlled; a motion platform comprising a planar plate supported by the actuators, the incline of the plate being controlled by the change in height of the actuators; a driving unit for sliding the motion platform forwards and backwards; and a control unit for controlling the motion platform and the driving unit according to the received control information entered by a user. According to the present invention, the movements of the stage display props can be manipulated in various ways by means of the motion platform, the incline of the plate of which is controlled by adjusting the height of each of the plurality of actuators, thereby having the benefit of providing a dramatic display effect to the audience.
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  • STAGE DISPLAY SYSTEM

    The present invention relates to a stage display system. The present invention is characterized by comprising: a location acquisition unit for acquiring location information from electronic tags attached to one or more moving bodies; an image processing unit for compositing, in accordance with a previously set display pattern information, texture onto an image layer on the basis of the location information; and an image output unit for outputting the image layer. According to the present invention, by compositing a texture onto an image layer according to the display pattern and on the basis of the location information, and outputting the display pattern onto the stage, a variety of stage display effects are provided corresponding to the performance of the actors on the stage, thereby allowing the audience to be absorbed in the performance of the actors, and additionally having the benefit of significantly reducing the stage setup expense.
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  • Development of a self-balancing robot with a control moment gyroscope

    Park, Ji-Hyun   Cho, Baek-Kyu  

    This study introduces a two-wheeled self-balancing mobile robot based on a control moment gyroscope module. Two-wheeled mobile robots are able to achieve better mobility and rotation in small spaces and to move faster than legged robots such as humanoid type robots. For this reason, the two-wheeled mobile robot is generally used as a mobile robot platform. However, to maintain its balance, the two-wheeled robot needs to use movements of its two wheels. When an unexpected disturbance affects the robot, the robot maintains its balance with movements of the wheels and tilting of the body. If the disturbance exceeds the response capability of the robot, the robot will lose its stability. At the same time, the safety of the robot may be put at risk by movements to maintain balance. To address these issues, a robot was designed with a control moment gyroscope module to improve balance while minimizing movement. When a disturbance is applied to the robot, the disturbance is estimated by a disturbance observer and the control moment gyroscope controller compensates the disturbance. Using the control moment gyroscope module, the robot can maintain balance with just small movements of its wheels. Improved performance and stability were verified with experiments and simulations.
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  • ELECTRONIC DEVICE

    A method for providing a service by an electronic device according to various embodiments may comprise the steps of: obtaining biometric information of a user; determining at least one service associated with the biometric information out of a plurality of services that the electronic device supports; and providing the determined at least one service.
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  • Therapeutic use of extracellular mitochondria in CNS injury and disease

    Nakamura, Yoshihiko   Park, Ji-Hyun  

    In the central nervous system (CNS), neuronal functionality is highly dependent on mitochondrial integrity and activity. In the context of a damaged or diseased brain, mitochondrial dysfunction leads to reductions in ATP levels, thus impairing ATP-dependent neural firing and neurotransmitter dynamics. Restoring mitochondrial ability to generate ATP may be a basic premise to restore neuronal functionality. Recently, emerging data in rodent and human studies suggest that mitochondria and its components are surprisingly released into extracellular space and potentially transferred between cells. Transferred mitochondria may support oxidative phosphorylation in recipient cells. In this mini-review, we (a) survey recent findings in cell to cell mitochondrial transfer and the presence of cell-free extracellular mitochondria and its components, (b) review experimental details of how to detect extracellular mitochondria and mitochondrial transfer in the CNS, (c) discuss strategies and tissue sources for mitochondria isolation, and (d) explore exogenous mitochondrial transplantation as a novel approach for CNS therapies.
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  • Inhibition of miR-203 Reduces Spontaneous Recurrent Seizures in Mice

    Lee, Soon-Tae   Jeon, Daejong   Chu, Kon   Jung, Keun-Hwa   Moon, Jangsup   Sunwoo, Junsang   Park, Dong-Kyu   Yang, Hyunwoo   Park, Ji-Hyun   Kim, Manho   Roh, Jae-Kyu   Lee, Sang Kun  

    Inhibitory synaptic receptors are dysfunctional in epileptic brains, and agents that selectively target these receptors may be effective for the treatment of epilepsy. MicroRNAs interfere with the translation of target genes, including various synaptic proteins. Here, we show that miR-203 regulates glycine receptor-beta (Glrb) in epilepsy models. miR-203 is upregulated in the hippocampus of epileptic mice and human epileptic brains and is predicted to target inhibitory synaptic receptors, including Glrb. In vitro transfection, target gene luciferase assays, and analysis of human samples confirmed the direct inhibition of GLRB by miR-203, and AM203, an antagomir targeting miR-203, reversed the effect of miR-203. When intranasal AM203 was administered, AM203 reached the brain and restored hippocampal GLRB levels in epileptic mice. Finally, intranasal AM203 reduced the epileptic seizure frequency of mice. Overall, this study suggests that GLRB expression in the epileptic brain is controlled by miR-203, and intranasal delivery of AM203 showed therapeutic effects in chronic epilepsy mice.
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  • Development of a self-balancing robot with a control moment gyroscope

    Park, Ji-Hyun   Cho, Baek-Kyu  

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  • Powdery Mildew Caused by an Erysiphe sp on Korean Ginseng

    Cho, Sung-Eun   Park, Mi-Jeong   Choi, Gug-Seoun   Park, Ji-Hyun   Shin, Hyeon-Dong  

    In August and September 2014, Korean ginseng (Panax ginseng) plants showing symptoms of powdery mildew infection were found in a polyethylene film-covered greenhouse in Suwon, Korea. The mildew was initially observed to occur in circular to irregular white colonies, which subsequently developed into abundant mycelial growths on both leaf surfaces. No chasmothecia were observed. Based on its morphological characteristics, the fungus was determined to be a species of Erysiphe. Phylogenetic analysis of the sequence of the internal transcribed spacer region of the ribosomal DNA obtained from the isolate placed the powdery mildew fungus in the genus Erysiphe. Here, we describe this Erysiphe sp. found growing on Korean ginseng using both illustrations and molecular data. A comparison of the Korean isolate and three previous records of powdery mildews known to grow on Panax plants is also provided. This is the first report of powdery mildew on Korean ginseng in Korea.
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  • Dinemasporium japonicum on Polytrichum commune from Korea

    Park, Ji-Hyun   Hong, Seung-Beom   Choi, Young-Joon  

    Dinemasporium japonicum was found growing on the decaying stems of Polytrichum commune (Bryophyta). The identification of D. japonicum was based on its morphological characteristics and the sequence analysis of the internal transcribed spacer of ribosomal DNA. This represents the first record of D. japonicum on a non-tracheophyte substrate, and the first record of its occurrence in Korea.
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  • Dinemasporium japonicum on Polytrichum commune from Korea

    Park, Ji-Hyun   Hong, Seung-Beom   Choi, Young-Joon   Shin, Hyeon-Dong  

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  • Altered Expression of miR-202 in Cerebellum of Multiple-System Atrophy

    Lee, Soon-Tae   Chu, Kon   Jung, Keun-Hwa   Ban, Jae-Jun   Im, Woo-Seok   Jo, Hee-Yeon   Park, Ji-Hyun   Lim, Ji-Yeon   Shin, Jung-Won   Moon, Jangsup   Lee, Sang Kun   Kim, Manho   Roh, Jae-Kyu  

    Cerebellar degeneration is a devastating manifestation of cerebellar-type multiple-system atrophy (MSA), a rapidly progressive neurodegenerative disease, and the exact pathogenesis is unknown. Here, we examined the expression of micro-RNAs (miRNAs), which are short noncoding RNAs, in the cerebellum of MSA and the key target genes. miRNA microarray found 11 miRNAs with significantly different expression in MSA cerebellum compared to cerebellum from age-, sex-, and postmortem interval-matched controls. miR-202 was the most upregulated in the MSA samples. In silico analysis, followed by target gene luciferase assay, in vitro transfection, and Western blotting in human samples showed that miR-202 downregulates Oct1 (Pou2f1), a transcription factor expressed in cerebellar Purkinje cells. Transfection of Neuro-2a cells with miR-202 enhanced oxidative stress-induced cell death, and an antagomir to miR-202 inhibited this effect of miR-202. This study provides novel insight into the role of miRNA in cerebellar degeneration and suggests that miR-202 is a key miRNA mediating the pathogenesis of MSA.
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  • Zonate Leaf Spot of Prunus mandshurica Caused by Hinomyces pruni in Korea

    Cho, Sung-Eun   Park, Ji-Hyun   Lee, Sang-Hyun   Lee, Chong-Kyu   Shin, Hyeon-Dong  

    Zonate leaf spots and severe defoliation were observed on Manchurian apricot (Prunus mandshurica) growing in a humid location in Korea from 2011 through 2013. The main symptoms included greyish green to brownish grey and zonate leaf spots without border lines, which mostly led to premature defoliation. The morphological characteristics of the causal agent were consistent with Hinomyces pruni. Identification was supported by analysing the sequence of the internal transcribed spacer region of ribosomal DNA from an isolate. The pathogenicity of the isolate was confirmed by artificial inoculation. This is the first report of zonate leaf spot caused by H.pruni on Manchurian apricot globally as well as in Korea.
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  • Choanephora flower rot caused byChoanephora cucurbitarumonAbelmoschus manihot

    Park, Ji-Hyun   Cho, Sung-Eun   Hong, Sun-Hee   Shin, Hyeon-Dong  

    In August 2013, blossom blight and wet rot were observed on flowers of Abelmoschus manihot in a private garden in Hongcheon County, Korea. The fungus initially infected fading flower petals, then expanded to encompass entire flowers and finally resulted in flower desiccation and fall. The causal fungus was identified by morphological characterization and molecular analysis as Choanephora cucurbitarum. Pathogenicity tests were conducted twice with similar results. To our knowledge, this is the first report, globally, of C. cucurbitarum on A. manihot.
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  • Pythium aphanidermatum Causing Pythium Rot on Lampranthus spectabilis in Korea

    Park, Mi-Jeong   Han, Kyung-Sook   Kim, Jin-Won   Park, Ji-Hyun   Shin, Hyeon-Dong  

    Pythium aphanidermatum was found to be associated with rotting of leaves and stems in Lampranthus spectabilis in the summers of 2013 and 2014. Infected plants were initially characterized by water-soaked and discoloured tissue, which are soon covered with cottony aerial hyphae. Subsequently, infected tissues wilted, leaves and stems appeared desiccated, and infected plants died. Pathogenicity of a representative isolate was proved, fulfilling Koch's postulates. Sequence of the internal transcribed spacer region of ribosomal DNA from the isolate shared 100% identity with that of P.aphanidermatum. To our knowledge, this is the first report of P.aphanidermatum causing leaf and stem rot on L.spectabilis in Korea.
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