형용사 중첩의 강세에 대한 음운론적 고찰

윤보라 ( Yoon Bora ) 한국중국언어학회 2020 중국언어연구 Vol.0 No.88

An adjective of Standard Chinese can expand its meaning by duplication. A duplicated adjective tends to strengthen its meaning. During the course of duplication, changes occur not only in its form but in its sound. The primary stress is given to the second syllable, which often changes to the first tone with retroflexion. A monosyllabic adjective can constitute a prosodic foot by duplication. The second syllable changes to the high level tone in order to make it more salient. The retroflexion seems to be caused by the influence from spoken Pekingese. The stress and change of tone in SC duplicated adjectives mean that SC is in the verge of changes. This study is significant because it sheds light to the in the duplicated adjectives while past studies often pay attention only to syntactic, typological, and morphological aspects of them.

대상포진 후 발생한 아급성 위팔신경근얼기염

김재환,김용덕,나상준,이기욱,윤보라,Kim, Jae-Hwan,Kim, Yong-Duk,Na, Sang-Jun,Lee, Kee Ook,Yoon, Bora 대한임상신경생리학회 2015 Annals of Clinical Neurophysiology Vol.17 No.2

Brachial radiculoplexitis is characterized by acute onset of shoulder and arm pain followed by weakness and sensory loss. Brachial radiculoplexitis by herpes zoster is a rare disease, which can be diagnosed by careful history, electrodiagnosis and MRI. It has remained uncertain about clinical characteristics, treatment, and prognosis. Better understanding of this disease helps earlier diagnosis and prompt treatment to minimize neurologic sequale. We present two cases of subacute brachial radiculoplexitis preceded by herpes zoster infection.

유체집속효과를 이용한 폴리다이아세틸렌 센서칩 개발

어수한(Soo-Han Eo),윤보라(Bora Yoon),김종만(Jong-Man Kim),송시몬(Simon Song) 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.5

Polydiacetylenes (PDAs) are excellent sensor materials that have unique feature of visible color transformation from blue to red by environmental stimulus such as temperature, pH, pressure, molecular recognition, and etc. In addition, recently developed PDA sensors emit the fluorescence signal. To investigate the feasibility of the integration of PDA sensors onto a microfluidic chip, we have employed a hydrodynamic focusing technique. Specifically, a blue-phase PDA vesicle solution was allowed to contact with cyclodextrin (CD) solutions in a microfluidic channel, and the fluorescence signal generated upon interaction between the two solutions were monitored. Interestingly, we were able to image fluorescent signals that is proportional to the CD concentrations. These results should be useful in the design of continuous detecting PDA sensor systems.

증례 : 순환기 ; 점액종으로 오인되고 절제술 후 급속히 성장한 좌심방의 점액섬유육종

서지원 ( Jiwon Seo ),윤보라 ( Bora Yoon ),최정호 ( Jung Ho Choi ),전경현 ( Kyung Hyun Chun ),주현철 ( Hyun Chul Joo ),오은지 ( Eun Ji Oh ),이상학 ( Sang Hak Lee ) 대한내과학회 2015 대한내과학회지 Vol.88 No.6

82세 남자 환자가 좌심방의 종양을 수술로 제거하였으며 병리 검사상 점액종이 의심되었다. 이후 3개월 만에 잔여종양이 급속히 성장하여 승모판 폐쇄와 폐부종이 동반된 호흡곤란으로 내원하였다. 2차 수술을 통해 다시 종양을 제거하였고, 수술 후 병리 검사상 점액섬유육종으로 진단되었다. 원발성 심장내 종양은 드물며, 그 중 75%는 양성종양인데 점액종이 가장 흔하다. 본 증례와 같은 심장의 악성 점액섬유육종은 매우 희귀할뿐 아니라 병리학적으로 점액종과 매우 유사하여 감별이 어려운 경우가 있다. 따라서 점액종이 의심되는 병변에서 악성점액섬유육종을 신중하게 감별하고 지속적 추적관찰을 하는 것이 중요하다. Malignant primary cardiac tumors are rare with the most common type among them being sarcomas. However, a myxoid sarcoma in the heart is very rare and differentiating it from from cardiac myxoma is often difficult. Here, we report a case of rapid regrowth of a left atrial tumor after surgical resection that was finally diagnosed as cardiac myxoid fibrosarcoma. An 82-year-old man, who underwent resection of a cardiac tumor 3 months ago, presented with severe dyspnea and peripheral edema. He was diagnosed with a mitral valve obstruction due to the regrowth of a huge left atrial tumor. The patient had a second resection and the resected tumor was finally diagnosed as myxoid fibrosarcoma. (Korean J Med 2015;88:685-689)

열민감성 공액고분자를 이용한 미세유동칩 내의 온도 측정

류성민(Sungmin Ryu),윤보라(Bora Yoon),황현진(Hyunjin Hwang),김종만(Jong-Man Kim),송시몬(Simon Song) 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.5

Microfluidic chips have been frequently utilized to perform biochemical analysis, like cell culture, cell-based drug screening, biomolecule synthesis, and etc, because they reduce the consumptions of analytes and reagents and automate multi-step analysis processes. It is often critical to monitor temperature in a microchannel for the analysis in order to control a reaction rate of biomolecules. We propose a novel method to monitor a temperature change in a microchannel flow by using polydiacetylene (PDA), a conjugated polymer, that has a unique property to transform its color from visible blue to fluorescent red by thermal stress. We inject PDA sensors of the form of a droplet into the microchannel with a microheater on the bottom. Preliminary results show that the florescence intensity of a PDA sensor droplets varies with the temperature.

월류방지 구조물 설치에 따른 농업용 저수지의 침투특성

류정현(Ryu, Junghyun),이영학(Lee, Younghak),윤보라(Yoon, Bora),이달원(Lee, Dalwon) 한국방재학회 2022 한국방재학회논문집 Vol.22 No.2

본 연구에서는 노후화된 농업용저수지에 이상강우에 의한 월류를 효과적으로 방지할 수 있는 월류방지 구조물을 설치하고, 침투특성을 모형실험과 수치해석을 통해 비교분석하여 현장실용화 방안을 마련하고자 하였다. 실험 조건은 댐마루에 Gabion 옹벽, Geomembrane, Core가 복합적으로 설계된 3가지 형식의 월류방지 구조물인 계단형 Gabion 옹벽, 수직형 Gabion 옹벽, Parapet을 설치하고 홍수위부터 월류수위까지 수위를 상승시키며 관측하였다. 실험결과, 변형 및 변위결과는 전도와 파괴 등의 결함문제가 발생하지 않았고 매우 미소한 수평변위와 수직변위를 나타내어 효과적으로 월류를 방지하는 것으로 나타났다. 침윤선과 공극수압 분포 결과로부터 침투수는 상류사면에서부터 필터를 통해 Toe-drain으로 원활하게 배수되는 것으로 나타났고, 댐마루 상부에 침투수가 집중되면 하류사면 상부로 누수를 발생시켜 월류방지 구조물 하부의 안정성에 영향을 미칠 수 있는 것으로 평가되었다. 동수경사 분포는 하류사면선에서 모든 형식이 안정한 것으로 평가되었고, 잠재적인 취약부가 될 수 있는 하류사면 상부는 누수의 영향을 받을 수 있어 Geomembrane의 시공 시 섬세한 시공관리가 필요한 것으로 나타났다. 전체적으로, 적용된 3개의 월류방지 구조물 중 계단형 Gabion 옹벽은 전도 및 누수 등의 문제가 발생하지 않아 파이핑 안정성을 확보할 수 있기 때문에 다른 형식의 월류방지 구조물보다 우수한 방법으로 평가되었다. In this study, a structure that can effectively prevent overtopping caused by abnormal rainfall was installed in a deteriorative agricultural reservoir, and seepage characteristics were compared and analyzed through model experiments and numerical analysis. The experimental conditions were observed by installing a stepped gabion, vertical gabion, and parapet in combination with a gabion retaining wall, geomembrane, and core on the dam crest. Small horizontal and vertical displacements without defects were found, such as overturning and failure, to effectively prevent overtopping. A comparison of seepage line and pore water pressure results indicates that the seepage water drained smoothly to the toe drain through the filter from the upstream slope. It was perceived that the concentration of seepage water on the upper part of the dam crest might cause leakage to the upper part of the downstream slope and affect the stability of the overtopping prevention structures. The distribution of the hydraulic gradient was found to be stable in all cases on the downstream slope. The upper part of the downstream slope could be vulnerable to leakage, so careful management is required when constructing the geomembrane. Overall, among the three overtopping prevention structures applied, a stepped gabion retaining wall did not cause such problems as overturning and leakage. Therefore, it is considered better than the other types of overtopping prevention structure.

진동대모형실험에 의한 농업용 저수지 제체의 내진성능 평가

이영학(Lee, Younghak),류정현(Ryu, Junghyun),윤보라(Yoon, Bora),허준(Heo, Joon),이달원(Lee, Dalwon) 한국방재학회 2021 한국방재학회논문집 Vol.21 No.3

본 연구에서는 노후화된 균일형 저수지의 월류 방지를 위한 방법으로 Parapet 구조물을 댐마루에 설치하고, 가속도 반응, 변위거동, 공극수압 거동을 진동대 모형시험으로 비교분석하였다. 실험 조건은 국내기준과 진도규모에 따른 지진가속도범위를 고려한 설계지진가속도를 4가지 Case별로 분류하였으며, 진동형 파형(Gongen)과 충격형 파형(Minogawa)을 입력파형으로 적용하였다. 설계지반가속도에 따른 가속도 반응은 진동형 파형에서 가속도의 증가율이 최대지진가속도에 도달할 수 있는 것으로 나타나 충격형 파형보다 제체 균열이 발생할 가능성이 높은 것으로 나타났다. 진동형 파형 및 충격파형 모두 가속도 증폭비는 댐마루에서 가장 높았으며, 설계지진가속도가 커질수록 증폭비는 작아지는 특징을 나타내었다. 또한, 수평변위는 침투의 영향으로 상류사면에서 가장 컸고, 수직변위는 댐마루에서 가장 크게 나타났다. 본 연구에서 검토된 파형의 비교결과는 진동형 파형이 충격형 파형보다 제체의 변위에 미치는 영향이 클 수 있음을 제시하였다. 그러나, 수평변위와 침하비, 과잉공극수압비에 대한 안전기준을 적용한 결과, 충격형과 진동형 파형 모두에서 허용범위 이내로 안정한 것으로 평가되었다. 따라서, Parapet 구조물은 월류 저항성과 제체 자체의 안정성에 대하여 긍정적인 효과를 가질 것으로 기대된다. In this study, shaking table tests were performed to compare and analyze the acceleration response, displacement behavior, and pore-water pressure behavior of reservoirs with parapets installed to prevent overtopping of deteriorative homogeneous reservoirs. During the shaking table tests, the experimental conditions were divided into four cases considering the range and magnitude of seismic acceleration according to national standards. The vibration-type waveform (Gongen) and shock-type waveform (Minogawa) were applied as input waveforms. The acceleration amplification ratios of both vibration- and shock-wave types were the largest in the dam crest, and the amplification ratio decreased as the design earthquake acceleration increased. In addition, the horizontal displacement was maximum on the upstream slope, owing to the influence of seepage water, and the vertical displacement was maximum on the dam crest, owing to the self-weight effect of the parapet structure. A comparison of the waveform results indicates that the vibration-type waveform may exhibit a more significant effect on the embankment zone displacement than the shock-type waveform. However, when the safety standards for the horizontal displacement, settlement ratio, and excess pore-water pressure ratio were applied, the embankment was stable within the allowable range in both the shock-type and vibration-type waveforms. Therefore, the parapet structure is expected to influence the overflow resistance and stability of embankments positively.

헬스케어 렌털 생활가전을 통한 건강습관 모니터링 서비스 시스템 디자인

황난원(Nanwon Hwang),엄현지(Hyunji Um),윤보라(Bora Yoon),이새슬(Saeseul Lee),강효진(Hyo-Jin Kang) 한국디자인학회 2020 한국디자인학회 학술발표대회 논문집 Vol.2020 No.6