• Title/Summary/Keyword: Gyu-Dong Choi

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Clinical Case Study of Facial Nerve Palsy Using Facial Acupuncture (안면 성형침을 이용한 안면신경마비 치험 2례)

  • Chu, Min-Gyu;Jo, Hee-Guen;Choi, Jin-Bong;Kim, Sun-Jong;Park, Kyung-Mi;Cho, Gook-Ryung;Lee, Hyun
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.23 no.5
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    • pp.1188-1192
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    • 2009
  • Facail nerve palsy is a common disease in the face. This disease is treated by many methods. But it is not treated by Facial Acupunture. Therefore we performed to evaluate the effect of Facial Acupuncture with oriental dedical treatment in facail nerve palsy. This clinical study was carried out 2 caese of facail nerve palsy which had been admitted our hospital. In this study the patients were treated by Facail Acupuncture. Other treatment were herbal medication, regabilitative therapy. H-B scale(House-Brackmann facial nerve grading system) and Digital Infrared Thermal Imaging were measured from admission to discharge. After being treated by our methods, Patients' H-B scale and Inequality of Facial DITI were improved in cases compared to existing. In the study, The treatment of facial nerve palsy using Facial acupuncture was more effective, especially H-B scale, Digital Infrared Thermal Imaging and treatment period, compared to existing.

Transcriptome analyses of the ginseng root rot pathogens Cylindrocarpon destructans and Fusarium solani to identify radicicol resistance mechanisms

  • Li, Taiying;Kim, Jin-Hyun;Jung, Boknam;Ji, Sungyeon;Seo, Mun Won;Han, You Kyoung;Lee, Sung Woo;Bae, Yeoung Seuk;Choi, Hong-Gyu;Lee, Seung-Ho;Lee, Jungkwan
    • Journal of Ginseng Research
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    • v.44 no.1
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    • pp.161-167
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    • 2020
  • Background: The ascomycete fungi Cylindrocarpon destructans (Cd) and Fusarium solani (Fs) cause ginseng root rot and significantly reduce the quality and yield of ginseng. Cd produces the secondary metabolite radicicol, which targets the molecular chaperone Hsp90. Fs is resistant to radicicol, whereas other fungal genera associated with ginseng disease are sensitive to it. Radicicol resistance mechanisms have not yet been elucidated. Methods: Transcriptome analyses of Fs and Cd mycelia treated with or without radicicol were conducted using RNA-seq. All of the differentially expressed genes (DEGs) were functionally annotated using the Fusarium graminearum transcript database. In addition, deletions of two transporter genes identified by RNA-seq were created to confirm their contributions to radicicol resistance. Results: Treatment with radicicol resulted in upregulation of chitin synthase and cell wall integrity genes in Fs and upregulation of nicotinamide adenine dinucleotide dehydrogenase and sugar transporter genes in Cd. Genes encoding an ATP-binding cassette transporter, an aflatoxin efflux pump, ammonium permease 1 (mep1), and nitrilase were differentially expressed in both Fs and Cd. Among these four genes, only the ABC transporter was upregulated in both Fs and Cd. The aflatoxin efflux pump and mep1 were upregulated in Cd, but downregulated in Fs, whereas nitrilase was downregulated in both Fs and Cd. Conclusion: The transcriptome analyses suggested radicicol resistance pathways, and deletions of the transporter genes indicated that they contribute to radicicol resistance.

Craniosynostosis Occurring between Siblings (남매간에 발생한 두개골조기유합증)

  • Choi, Jeong-Hwan;Kim, Myung-Hoon;Kim, Min-Su;Jung, Gyu-Yong;Lee, Keun-Cheol;Kim, Seok-Kwun
    • Archives of Craniofacial Surgery
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    • v.14 no.2
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    • pp.115-118
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    • 2013
  • Craniosynostosis is a congenital anomaly in which cranial sutures close prematurely and restrict skull growth. In this paper, the case of two siblings, a male and a female, who were both diagnosed as craniosynostosis is reported. They underwent corrective osteotomy for cranial vault remodeling. A 22-month-old female infant who was brought to the department of plastic and reconstructive surgery of the authors' hospital was diagnosed with plagiocephaly. At the same time, her 7-month-old brother was diagnosed with brachycephaly. In the case of the female infant, corrective coronal osteotomy and supraorbital bar advancement were performed. Her brother underwent frontal advancement osteotomy using Tessier's tongue in the groove procedure. After the correction of the craniosynostosis, the two patients recovered in several days later, and the results were good in both cases cosmetically and functionally. They showed normal head circumference increasing curves and no symptom of functional disorder in their last follow-up. Isolated or nonsyndromic craniosynostosis is sporadic but mostly autosomal dominant. This paper presents a case of craniosynostosis with a genetic tendency; and although it occurred between siblings, the affected lesions differed. Thus, appropriate diagnosis and management in patients are needed.

Effect of Carthami Semen Aquacupunture(CSA) on Mercury-Induced Alterations in Tubular Transport Function in Rabbits (홍화자약침액(紅花子藥鍼液)이 수은(水銀)에 의한 가토(家兎)의 신세뇨관(腎細尿管) 물질이동(物質移動) 변화(變化)에 미치는 영향(影響))

  • Choi, Young-gyu;Youn, Hyoun-min;Song, Choon-ho;Jang, Kyung-jeon;Abn, Chang-beohm
    • Journal of Acupuncture Research
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    • v.19 no.5
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    • pp.199-208
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    • 2002
  • Objective : This study was undertaken to determine if Carthami Semen Aquacupunc- ture(CSA) exerts protective effect against alterations in membrane transport function rabbits with mercury chloride(HG)-induced acute renal failure. Methods : The administration of Hg at a subcutaneous single dose of 10 mg/kg caused a reduction in GFR and an increase in fractional Na excretion, indicating generation of acute renal failure. When CSA were given for 7 days prior to Hg administration, such changes were significantly attenuated. The fractional excretion of glucose and phosphate was increased in rabbits treated with Hg alone. Results : The increase in rabbits treated with Hg following CSA are significantly lower than that in animals treated with Hg alone. Uptakes of glucose and phosphate in purified isolated brush-border membrane and Na-K-ATPase activity in microsomal fraction were inhibited in rabbits treated with Hg alone. Such changes were prevented by CSA. Uptakes of organic ions, PAH and TEA, in renal cortical slices were inhibited by the administration of Hg, which was prevented by CSA. Exposure of renal cortical slices to Hg in vitro caused an increased LDH release and lipid peroxidation, which was significantly prevented by CSA extract. Conclusions : These results indicate that the administration of Hg causes impairment in reabsorption of solutes in the proximal tubule via the generation of reactive oxygen species. CSA provides the protection against the impairment in proximal reabsorption, and its effect may be resulted from its antioxidant effect.

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Effect of Matrix Structures on the Fracture Characteristics of Austempered Ductile Iron (오스템퍼드 구상흑연주철의 파괴특성에 미치는 기지조직의 영향)

  • Kim, Chang-Gyu;Choi, Chang-Ock
    • Journal of Korea Foundry Society
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    • v.11 no.3
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    • pp.228-235
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    • 1991
  • The Effects of the matrix structures and the amount of the retained austenite in austempered ductile iron(ADI) which contains Ni, Cu and Mo on fracture characteristics were inverstigated. The structures were changed from lower bainite to mixture of Lower and upper bainite, and then to upper bainite as austempering temperature increased. A higher austempering temperature yielded lower tensile strength and hardness, but higher impact valve and $K_{IC}$. In addition, the amount of the retained austenite increased with the austempering temperatures. Fracture surface showed a fibrous pattern and a dimple pattern with increasing the retained austenite amount.

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A comparative study for steam-methane reforming reaction analysis model (수증기-메탄개질반응 해석모델의 비교연구)

  • Choi, Chong-Gun;Jung, Tae-Yong;Dong-Hoon, Shin;Nam, Jin-Hyn;Kim, Yong-Gyu
    • Proceedings of the KSME Conference
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    • 2007.05b
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    • pp.1997-2002
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    • 2007
  • The reformer is one of the most important chemical processes for the production of high purity hydrogen from fossil fuel. This study compares zero-dimensional model with CFD models for reaction analysis of methane-steam reformer. The zero-dimensional model is an empirical equation, however CFD model uses reactions of Arrhenius type. Because the reaction coefficients of the steam-methane catalytic reforming have not been reported before in the form of Arrhenius type, the present study aims to find the appropriate reaction coefficients. The used CFD code is Fluent 6.2 version. Several models are compared for the case of various operating temperature, mass of catalyst and steam to methane ratio.

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국내 자동화 컨테이너터미널 개발 방향에 관한 연구

  • Choi Hyeong Rim;Park Nam Gyu;Park Byeong Ju;Yu Dong Ho;Kwon Hae Gyeong
    • Proceedings of the Korea Association of Information Systems Conference
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    • 2004.05a
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    • pp.122-137
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    • 2004
  • Automation of a container terminal is a world-wide tendency nowadays. The interest of ACT (Automated Container Terminal) is increasing more and more because of necessity of container terminal with higher competitive power and ultramodern equipment to down the cost and up the efficiency. ECT (Europe Combined Terminals) and CTA (Container Terminal Altenwerder) have studied a detailed technique for the operation of ACT. In Korea, many projects related to the development of ACT are working at present. However, indiscreet introduction of ACT may cause tremendous loss. Thus it is much important thing that we search relevant automation level or type for an environment In this study, we propose the necessary strategy in developing ACT through analyzing the present condition, automated equipments and property of operation at advanced An. If the strategy is applied in development of domestic ACT, we'll be able to build ACT with higher competitive power.

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A Study on Displacement Measurement by A Laser Interferometry using Common-path Fiber-optical Devices

  • Lee, Seok-Soon;Lee, Dong-Wook;Park, Min-Hyeok;Choi, Jin-Gyu;Nam, Kwang-Sik;Zhao, Shang
    • International Journal of Aerospace System Engineering
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    • v.1 no.1
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    • pp.29-33
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    • 2014
  • A displacement measurement system that uses fiber-optical common-path interferometry has been developed. The system includes fiber-optic devices and a collimator attached to a linear translation stage. The interferometry effect was detected with a photodetector whose signal was measured on an oscilloscope. Experiments showed that vibration of the stage disturbed the signal by causing nanoscale interference. Under stable conditions, the measured distance was the almost the same as the value calculated from the linear translation stage parameters.

Alternative Design of 3MW Offshore PM Synchronous Generator (해상용 3 MW 영구자석형 동기발전기의 대안설계)

  • Kim, Dong-Eon;Lee, Hong-Gi;Han, Hong-Sik;Jung, Yung-Gyu;Suh, Hyung-Suck;Chung, Chin-Wha;Lim, Min-Soo;Kwak, Seung-Keun;Oh, Man-Soo;Choi, June-Hyuk
    • 한국신재생에너지학회:학술대회논문집
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    • 2008.05a
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    • pp.274-277
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    • 2008
  • Pohang Wind Energy Research Center (PoWER-C) is developing a 3 MW Radial Flux Permanent Magnet (RFPM) Synchronous Generator for offshore Wind Energy Converter (WEC). The blade rotor rpm is 15.7 and the gear ratio is set to be 92.93. The nominal generator rpm at the rated load is about 1459. Baseline design with surface mounted PM magnets are completed. However, there is some concern about the excessive eddy current heating in the magnets. To alleviate this problem, another design with embedded magnet is going on. With embedded magnets, the generator length should be increased to compensate the increased flux leakage. But the field fluctuation in the magnets due to the slots are greatly reduced. This means less eddy currents and lower magnet operating temperature. In this report, engineering efforts for embedded rotor is presented.

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OXYGEN BEHAVIRO IN SILICON CRYSTAL ANNEALED THROUGH THE SIMULATED THERMAL CYCLE (SIMULATED THERMAL CYCLE로 열처리된 규소 단결정내의 산소 거동)

  • Suh, Dong-Suk;Kwon, Bong-Soo;Kim, Young-Gyu;Choi, Byung-Ho;Park, Jae-Woo
    • Proceedings of the KIEE Conference
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    • 1991.07a
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    • pp.162-165
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    • 1991
  • Oxygen behaviors in CZ-silicon wafer, grown by the Lucky Advanced Materials Inc. that is a pioneer of silicon material industries in Korea, were investigated to simulate effects on the device performance of oxygen, neglecting the effect of other impurity content, defects and thermal history. Silicon wafers were annealed through simulated 16K SRAM thermal cycle. As initial oxygen concentration increased up to 16.7ppma the amount of oxygen precipitation increased up to 10.6ppma and the bulk microdefect density increased up to $10.3{\times}10^3/mm^2$, but the depth of the denuded zone decreased to $5.0{\mu}m$

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