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양인태,김재철,천기선,박재국 강원대학교 산업기술연구소 2003 産業技術硏究 Vol.23 No.A
Population concentration phenomenon of city needs large-scale nde, and It is important elements that develop the circumference but, it is difficult to evaluate effects that ride gets land utilization change. Therefore, this research evaluates change and effect of land utilization as political to subway station that is main ride of Seoul City, and chose standard and position for night place arrangement of electric railway station. Research contents analyzed subway station effect area interior and external land utilization change taking advantage of GIs's buffer function and RS's classification technique, and decide precedence at subway station establishment and chose position of subway station for effect area outside area.
몰리브덴이 첨가된 Stellite 6 합금의 마모와 부식특성
申種喆,金在洙,李德悅,梁在雄,尹珍國,盧大虎,李種權 대한금속재료학회 2002 대한금속·재료학회지 Vol.40 No.10
Hardfacing layers of Stellite 6 with different molybdenum content are deposited on AISI 1045-carbon steel using Plasma Transferred Arc welding(PTA) machine. The microstructures, wear and corrosion resistances of the hardfacing layer are investigated in order to clarify the effect of molybdenum in Stellite 6 alloys. The microstructural characterizations of the hardfacing layers are performed using X-ray diffraction, back scattered electron images, and scanning electron microscopy. With an increase of Mo contents, M_6C type carbide are formed instead of Cr-rich type carbides, and so this microstructural change enhanced the mechanical properties such as wear and corrosion resistance of a Mo-modified Stellite 6 alloy.
이훈식,서국웅,윤양진,정미라,김용재,서국은,이중숙 한국운동역학회 2000 한국운동역학회지 Vol.9 No.2
The purpose of this paper is to select 7 male athletes and female athletes of high school, and to compare their active potential differences of upper arm muscles according to characteristic of a racket. the results obtained are as follows: 1. In the accumulative distribution rate of racket string tension, 65Ibs is higher in all muscle active potentials except male flexor carpi radialis muscle than 55Ibs or 60Ibs, and this result shows that 65Ibs gives lower efficiency to athletes. 2. In the muscle load rate of racket string tension, 55Ibs shows the lowest active muscle potential and is thought to be better in its efficiency, but 66Ibs shows a little high active potential and is thought not to be good in its efficiency.
증 례 : 요도암에서 구획증후군으로 나타난 염증성 근염 1예
양재국 ( Jae Kook Yang ),최하영 ( Ha Young Choi ),김민진 ( Min Jin Kim ),김경하 ( Kyoung Ha Kim ),김현숙 ( Hyun Sook Kim ),진윤미 ( Yoon Mi Jeen ) 대한내과학회 2016 대한내과학회지 Vol.90 No.1
염증성 근염은 부종양증후군의 하나이나, 국내에서 요도암과 연관되거나 또한 염증성 근염이 구획증후군으로 나타난 보고는 없었다. 저자는 요도암 환자에서 CCRT 시행 중염증성 근염에 의한 구획증후군이 발생하여 근막 절개, 고용량 스테로이드(250 mg/일) 및 면역글로불린(1 g/Kg)을 투여하고 호전을 보인 예를 경험하였기에 이에 대한 문헌고찰과 함께 증례를 보고하는 바이다. Inflammatory myositis is a heterogeneous group of rare diseases characterized by inflammation of the skeletal muscle. The association between cancer and inflammatory myositis is well established, with most cancer-associated myopathies diagnosed within 2 years of initial diagnosis. However, despite this strong association, inflammatory myositis as a paraneoplastic syndrome of urethral cancer has not been reported in Korea. Furthermore, compartment syndrome in the context of inflammatory myositis is extremely rare. A 69 year-old woman presented with paresthesia and painful swelling of the right lower extremity 2 months after diagnosis with urethral cancer, which was treated by chemoradiotherapy. Painful numbness was particularly severe when extending the knee, leading to a preliminary diagnosis of myositis with compartment syndrome, which was confirmed by magnetic resonance imaging. After fascia resection, the patient was treated with high dose steroid and immunoglobulin therapy. Here, we report a case of compartment syndrome followed by inflammatory myositis in a patient with urethral cancer. (Korean J Med 2016;90:83-87)
박국양 ( Kook Yang Park ),박철현 ( Chul Hyun Park ),최창휴 ( Chang Hyu Choi ),이재익 ( Jae Ik Lee ),전양빈 ( Yang Bin Jeon ) 대한외상학회 2012 大韓外傷學會誌 Vol.25 No.4
A 27 year-old man, who had a penetrating cardiac injury due to a metal fragment was transferred to our hospital. At admission, his vital signs were stable, and his chest film showed a foreign-body-like finding in the heart silhouette. We evaluated the patient with chest computed tomography and echocardiography for further information. Finally, we removed the metal fragment from the left ventricle by using a cardiopulmonary bypass. (J Trauma Inj 2012;25:267-270)
Park, Jae-Sang,Jo, Jae-Hyeon,Yashiro, Hitoshi,Kim, Sung-Soo,Kim, Sun-Jae,Sun, Yang-Kook,Myung, Seung-Taek American Chemical Society 2017 ACS APPLIED MATERIALS & INTERFACES Vol.9 No.31
<P>Unlike for SnO2, few studies have reported on the use of SnC2O4 as an anode material for rechargeable lithium batteries. Here, we first introduce a SnC2O4-reduced graphene oxide composite produced via hydrothermal reactions followed by a layer-by-layer self-assembly process. The addition of rGO increased the electric conductivity up to similar to 10(-3) S cm(-1). As a result, the SnC2O4-reduced graphene oxide electrode exhibited a high charge (oxidation) capacity of similar to 1166 mAh g(-1) at a current of 100 mA g(-1) (0.1 C-rate) with a good retention delivering approximately 620 mAh g(-1) at the 200th cycle. Even at a rate of 10 C (10 A g(-1)), the composite electrode was able to obtain a charge capacity of 467 mAh g(-1). In contrast, the bare SnC2O4 had inferior electrochemical properties relative to those of the SnC2O4-reduced graphene oxide composite: similar to 643 mAh g(-1) at the first charge, retaining 192 mAh g(-1) at the 200th cycle and 289 mAh g(-1) at 10 C. This improvement in electrochemical properties is most likely due to the improvement in electric conductivity, which enables facile electron transfer via simultaneous conversion above 0.75 V and de/alloy reactions below 0.75 V: SnC2O4 + 2Li(+) + 2e(-) -> Sn + Li2C2O4 + xLi(+) + xe(-) -> LixSn on discharge (reduction) and vice versa on charge. This was confirmed by systematic studies of ex situ X-ray diffraction, transmission electron microscopy, and time-of-flight secondary-ion mass spectroscopy.</P>
Superconducting Magnet Power Supply System for the KSTAR 2nd Plasma Experiment and Operation
JAE HOON CHOI,DONG KEUN LEE,CHANG HWAN KIM,Jong-kook Jin,Sang-Hee Han,JONG DAE KONG,SEONG LOK HONG,Yang-Su Kim,MYEUN KWON,Hyun-sik Ahn,Gye-yong Jang,Min-seong Yun,Dae-Kyung Seong,Hyun-seok Shin 대한전기학회 2013 Journal of Electrical Engineering & Technology Vol.8 No.2
The Korea Superconducting Tokamak Advanced Research (KSTAR) device is an advanced superconducting tokamak to establish scientific and technological bases for attractive fusion reactor. This device requires 3.5 Tesla of toroidal field (TF) for plasma confinement, and requires a strong poloidal flux swing to generate an inductive voltage to produce and sustain the tokamak plasma. KSTAR was originally designed to have 16 serially connected TF magnets for which the nominal current rating is 35.2 kA. KSTAR also has 7pairs of poloidal field (PF) coils that are driven to 1 MA/sec for generation of the tokamak plasma according to the operation scenarios. The KSTAR Magnet Power Supply (MPS) was dedicated to the superconducting (SC) coil commissioning and 2nd plasma experiment as a part of the system commissioning. This paper will describe key features of KSTAR MPS for the 2nd plasma experiment, and will also report the engineering and commissioning results of the magnet power supplies.