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        검색결과 287

        48.
        2020.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        목적 : 원거리에서 심한 복시 증상을 가지고 있는 눈벌림 부족형 내사시를 대상으로 성공적인 시기능훈련의 사 례를 보고하고자 하였다. 방법 : 연구대상자는 만19세 여성으로 복시 증상으로 인해 일상적인 불편함까지 동반된 상태였다.처음 방문시 양안시검사를 실시한 결과 원거리에서 복시를 동반한 눈벌림 부족형 간헐내사시였다. 시기능훈련은 음성융합버전스를 개선시키는 협응훈련과 초점조절훈련, 안구운동성훈련 등을 중심으로 시행하였다. 시기능 평가로는 굴절검사를 포함하여 프리즘 가림검사, 융합능력, 버전스용이성, 눈모음근점, Bagolini striated glasses test, W4D 그리 고 입체시 검사 등을 포함하였다. 결과 : 시기능훈련 전에 원거리 편위량은 내사시 16 △에서 9개월 후 내사위 3 △으로 향상되었다. 근거리 편위 량도 시기능훈련 후에 내사시 7 △에서 내사위 1 △으로 변화가 있었다. 융합능력은 원거리 BI X/4/1에서 훈련 후 에 BI X/4/3로, 근거리는 훈련 전 BI X/8/2에서 훈련 후 BI X/16/14로 모두 변화가 있었다. Bagolini test에서 시기능훈련 전에 나타났던 동측성 복시는 훈련 후 모든 거리에서 단일시로 개선되었다. 처음 방문 시 심하게 호소했 던 원거리에서의 복시 증상은 9개월간의 훈련과정에서 점차 개선되어 안정적인 양안 단일시 상태를 나타내었다. 결론 : 원거리에서 심한 복시 증상을 호소한 눈벌림 부족형 내사시에서 9개월간의 시기능훈련 후에 양안시기능 과 시각적 증상은 모두 효과적으로 개선되었다.
        4,000원
        51.
        2020.03 KCI 등재 구독 인증기관 무료, 개인회원 유료
        A eukaryotic microalga was isolated from seawater in Janghang Harbor, Korea and its morphological, molecular, and physiological characteristics were investigated. Due to its simple morphology, no distinctive characters were found by morphological observation, such as light microscope or scanning/transmission electron microscopy (S/ TEM). However, molecular phylogenetic evidence inferred from the concatenated small subunit (SSU) 18S rRNA and internal transcribed spacer (ITS) sequence data indicated that the isolate belonged to the newly described Micractinium singularis. Furthermore, it was clustered with Antarctic Micractinium strains and it also showed a psychrotolerant property, surviving at temperatures as low as 5°C. However, its optimal growth temperatures range from 15°C to 25°C, indicating that this microalga is a mesophile. Additionally, gas chromatography-mass spectrometry (GC/MS) analysis showed that the isolate was rich in nutritionally important omega-3 polyunsaturated fatty acid, and high-performance liquid chromatography analysis (HPLC) revealed that the high-value antioxidant lutein was biosynthesized as an accessory pigment by this microalga, with glucose as the major monosaccharide. Therefore, in this study, a Korean marine M. singularis species was discovered, characterized, and described. It was subsequently added to the national culture collections.
        4,000원
        52.
        2019.12 KCI 등재 SCOPUS 구독 인증기관 무료, 개인회원 유료
        We report the performance of the 13.7-meter Taeduk Radio Astronomy Observatory (TRAO) radio telescope. The telescope has been equipped with a new receiver, SEQUOIA-TRAO, a new backend system, FFT2G, and a new VxWorks operating system. The receiver system features a 16-pixel focal plane array using high-performance MMIC preamplifiers; it shows very low system noise levels, with system noise temperatures from 150 K to 450 K at frequencies from 86 to 115 GHz. With the new backend system, we can simultaneously obtain 32 spectra, each with a velocity coverage of 163 km s−1 and a resolution of 0.04 km s−1 at 115 GHz. The new operating system, VxWorks, has successfully handled the LMTMC-TRAO observing software. The main observing method is the on-the-fly (OTF) mapping mode; a position-switching mode is available for small-area observations. Remote observing is provided. The antenna surface has been newly adjusted using digital photogrammetry, achieving a rms surface accuracy better than 130 µm. The pointing uncertainty is found to be less than 5'' over the entire sky. We tested the new receiver system with multi-frequency observations in OTF mode. The aperture efficiencies are 43±1%, 42±1%, 37±1%, and 33±1%, the beam efficiencies are 45±2%, 48±2%, 46±2%, and 41±2% at 86, 98, 110, and 115 GHz, respectively.
        4,000원
        53.
        2019.12 KCI 등재후보 구독 인증기관 무료, 개인회원 유료
        This study aimed to examine the effect of a mild elevation in serum cholesterol level in a porcine coronary overstretch restenosis model using a balloon angioplasty catheter or drug-eluting coronary stent. Pigs were divided into two groups and were fed a commercial normal diet (CND, n = 4) or a high-fat diet (HFD, n = 4) for 5 weeks. Coronary overstretch injury by balloon angioplasty or stent implantation was induced in the left anterior descending and left circumflex artery after 1 week of feeding. Histopathological analysis was performed at 4 weeks after coronary injury. During the experiment, the total cholesterol level in the HFD group increased by approximately 44.9% (from 65.9 ± 3.21 mg/dL at baseline to 95.5 ± 9.94 mg/dL at 5 weeks). The lumen area in the CND group was reduced in comparison with that in the HFD group after balloon angioplasty. After stent implantation, the injury score showed no significant difference. There were significant differences in the neointimal area (2.7 ± 0.33 mm2 in the CND group vs. 3.3 ± 0.34 mm2 in the HFD group, p<0.05), lumen area (2.6 ± 0.54 mm2 in the CND group vs. 2.0 ± 0.33 mm2 in the HFD group, p<0.05), and percent area stenosis (52.0 ± 7.96% in the CND group vs. 62.4 ± 5.15% in the HFD group, p<0.05). Body weight change was not different between the two groups. Increased serum cholesterol level activated vascular smooth muscle cell proliferation in the porcine coronary overstretch model.
        4,000원
        60.
        2019.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        In this study, we analyzed the factors affecting the introduction of Smart Factory by domestic SMEs through AHP analysis and tried to provide implications for the introduction of Smart Factory. It was confirmed that the manufacturing and introduction group, the non-manufacturing introduction group, and the already introduced group had the highest weight in the cost reduction in the first hierarchy standard. At this time, it can be seen that the weight for cost reduction is relatively high in the manufacturing introduction group and the introduction group, and the weight for the productivity improvement is relatively high in the non-manufacturing introduction group. It can also be seen that the portion of marketing enhancement does not have a significant impact on smart factory choices. It was confirmed that image enhancement is the highest in the manufacturing introduction group and the non-manufacturing introduction group in the first hierarchy standard, and the marketing has the highest weight in the introduction group. In the two - tiered standard, customer - friendly and proper inventory maintenance weights were relatively high in all the introduced groups, except for the high rankings.
        4,000원
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