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강동원,곽금희,양근호,배병노,김기환,한세환,김홍주,김영덕,최명재,Kang, Dong-Won,Gwak, Geum-Hee,Yang, Keun-Ho,Bae, Byung-Noe,Kim, Ki-Hwan,Han, Se-Whan,Kim, Hong-Joo,Kim, Young-Duk,Choi, Myeung-Jae 대한소아외과학회 2008 소아외과 Vol.14 No.2
Necrotizing enterocolitis (NEC) is the most common gastrointestinal emergency in the neonatal population. The aim of this study is to evaluate surgical indication and prognostic factors of NEC. Clinical data of seventy patients, diagnosed as NEC between January 2000 & January 2007, were reviewed retrospectively. Fifty-seven patients had medical treatment and 7 of them died. Thirteen patients who presented with pneumoperitoneum on plain abdominal film or were refractory to medical treatment received surgical treatment, and 5 of them died. All the expired 12 patients weighed less than 2500 g. Twenty out of seventy patients showed thrombocytopenia, and 11 patients of them died. The finding of pneumoperitoneum and thrombocytopenia could be the most important surgical indication. Prematurity, low birth weight and thrombocytopenia were related to a bad prognosis. NEC patients who presents with these findings must be considered for close observation and intensive care.
적층형 태양전지를 위한 비정질실리콘계 산화막 박막태양전지의 광흡수층 및 반사체 성능 향상 기술
강동원,Kang, Dong-Won 한국전기전자재료학회 2017 전기전자재료학회논문지 Vol.30 No.2
Highly photosensitive and wide bandgap amorphous silicon oxide (a-$SiO_x$:H) films were developed at low temperature ranges ($100{\sim}150^{\circ}C$) with employing plasma-enhanced chemical vapor deposition by optimizing $H_2/SiH_4$ gas ratio and $CO_2$ flow. Photosensitivity more than $10^5$ and wide bandgap (1.81~1.85 eV) properties were used for making the a-$SiO_x$:H thin film solar cells, which exhibited a high open circuit voltage of 0.987 V at the substrate temperature of $100^{\circ}C$. In addition, a power conversion efficiency of 6.87% for the cell could be improved up to 7.77% by employing a new n-type nc-$SiO_x$:H/ZnO:Al/Ag triple back-reflector that offers better short circuit currents in the thin film photovoltaic devices.
강동원,강세현,박중군,황덕상,김윤범,김규석,Kang, Dong-Won,Kang, Se-Hyun,Park, Jung-Gun,Hwang, Deok-Sang,Kim, Yoon-Bum,Kim, Kyu-Seok 대한한방안이비인후피부과학회 2018 한방안이비인후피부과학회지 Vol.31 No.3
Objectives : The aim of this study is to report the effect of herbal medicine and acupuncture on a breastfeeding woman's postpartum urticaria which was unresponsive to a 1st generation antihistamine and a topical steroid. Methods : Wheals and pruritus occurred to a 36-year-old breastfeeding woman 2 days after the parturition. Symptoms were unresponsive to about a week of systemic antihistamine and topical steroid treatments. GamiSamul-tang herbal decoction was administered three times a day for the first 21 days and twice a day for the next 10 days of the treatment. Acupuncture treatment was applied to 12 acupoints (both sides of LI04, LR03, ST36, LI11, SP10, SP6) for 15 minutes once a week, 5 times in total. The patient's symptom was evaluated with Weekly Urticaria Activity Scale (UAS7) and Visual Analogue Scale for Worst Pruritus within 24 hours ($VAS_{Pruritus}$) each time the patient visited out-patient department. Results : The scores of UAS7 and $VAS_{Pruritus}$ at the baseline were 38 and 8.2 respectively. 10 days after the herbal medicine and acupuncture treatment began, both decreased to 0 and wheal, pruritus, erythema didn't appeared again for the rest of the follow up periods. Conclusions : This study shows the possibility of using GamiSamul-tang and acupuncture to treat postpartum urticaria.
Systemic Arterialization of Lung Without Sequestration
강동원 ( Kang Dong Won ),권선중 ( Kwon Seon Jung ),안진영 ( An Jin Yeong ),김명훈 ( Kim Myeong Hun ),박희선 ( Park Hui Seon ),이규승 ( Lee Gyu Seung ),김근화 ( Kim Geun Hwa ),정성수 ( Jeong Seong Su ),김진환 ( Kim Jin Hwan ),소영 대한결핵 및 호흡기학회 2001 Tuberculosis and Respiratory Diseases Vol.50 No.3
초저밴드갭을 위한 더블 할라이드 페로브스카이트 반도체 소재 연구개발 현황
강동원(Kang, Dong-Won) 대한전기학회 2024 전기의 세계 Vol.73 No.1
최근 높은 전력변환효율 특성과 낮은 제조원化가 특성을 경쟁력으로 주목받는 차세대 페롭스카이트 태양전지를 적층하여 다중접합 초고효율 태양전지 구현 기술이 주목을 받고 있다. 더블 할라이드 페로브스카이트 반도체 소재는 현재까지 단일 구조의 페로브스카이트에서 구현할 수 없었던 1.2 eV 보다 좁은 밴드갭 에너지를 구현할 수 있는 기술로서 최근 연구개발 기술 동향을 살펴본다. Multi-junction solar cells have gained considerable attention based on recently arising perovskite-semiconductor based photovoltaics with high power conversion efficiency and low material costs to further improve overall performance. Herein, double halide perovskite semiconductors are introduced, which delivers super narrow bandgap below 1.2 eV that has not been achieved by conventional ABX3 type perovskites to date.
라오스볼라벤고원의어류상과Poropuntius bolovenensis의 섭식기구다형성
강동원 ( Dong-won Kang ),이학영 ( Hak Young Lee ),최승호 ( Seung-ho Choi ) 한국환경생태학회 2016 한국환경생태학회지 Vol.30 No.3
2014년 3월부터 4월까지 라오스 볼라벤 고원의 Xe Pian과 Xe Namnoy의 본류 및 지류 하천에서 어류상을 조사한 Macronathus sp. 등 10종은 볼라벤 고원의 고유종으로 본 지역은 35.7%의 높은 고유화 빈도를 나타냈다. 한편 볼라벤 고원 내에 4종의 Poropuntius속 어류가 서식한다고 알려져 있으나(Kottelat, 2000, 2013) 본 조사에서 입 모양을 제외한 주요 계수형질이 4종 모두 중복되는 것을 확인하였다. 또한 미성어(>70㎜)는 일반적인 입 모양(narrow)을 가졌으나, 성어의 입 모양은 2가지 유형(narrow/broad)으로 나타나 성장하면서 입 모양이 변화하는 것으로 생각된다. 본 연구를 통해 볼라벤 고원에 서식하는 Poropuntius속 어류는 Poropuntius bolovenensis 1종이며, 본 종은 다양한 입 모양을 가지는 섭식기구의 다형성(Trophic polymorphism)이 존재하는 것을 확인하였다.결과 총 8과 28종의 어류가 확인되었다. 채집된 어류 중 Devario salmonatus, Poropuntius bolovenensis, Annamiasp., Sewellia elongata, Schistura bolavenensis, Schistura sp.1, Schistura sp.2, Schistura sp.3, Schistura sp.4, This survey was conducted during March to April 2014 in the main stream and tributaries of Xe Pian and Xe Namnoy in order to investigate fish fauna in the Bolaven Plateau. Fish belonging to twenty eight species and eight families were collected from the main stream and tributaries of Xe Namnoy and Xe Pian during the survey period. Among them, Devario salmonatus, Poropuntius bolovenensis, Annamia sp., Sewellia elongata, Schistura bolavenensis, Schistura sp.1, Schistura sp.2, Schistura sp.3, Schistura sp.4, and Macronathus sp. were endemic species in the Bolaven Plateau, indicating a high prevalence rate of endemic species (35.7%) in the area. Meanwhile, Kottelat (2000, 2013) has been reported that four species of Poropuntius inhabit the Bolaven Plateau. However, the major morphic characteristics of Poropuntius species found in the Bolaven Plateau were mostly overlapped, except for the shape of their mouth. The young fish of Poropuntius (> 70 mm SL) have only generalized mouth while the of adult fish the shape of their mouth have two phenotype (narrow and broad). Therefore, it is assumed that Poropuntius species in the Bolaven Plateau has trophic polymorphism as the same species exhibits two different mouth shapes.
욕창 예방을 위한 체압 측정 장치 및 교정용 의자 개발
강동원(Dong-Won Kang),김경명(Kyoung-Myoung Kim),장경배(Kyung-Bae Jang) 대한전기학회 2009 대한전기학회 학술대회 논문집 Vol.2009 No.7
The chairbound, handicapped person often requires a cushion to distribute the supportive forces over the largest area possible in order to reduce the risk of the development of a pressure sore. Pressure sores are areas of damaged skin caused by staying in one position for too long and can cause serious infections, some of which are life-threatening. When sitting upright, the greatest proportion of body weight is centerd over the ischial tuberosities. So, it is important that comfortable seating and largest distribution of pressure to prevent pressure sores. Therefore, the objective of this study was to develop the physical pressure measurement device and orthodontic chair to prevent pressure sores.
폐암 환자에서 면역조직화학 염색을 통한 p53, erbB-2, CEA 종양단백 발현과 임상적 의의
강동원 ( Dong Won Kang ),이규승 ( Gyu Seung Lee ),김선영 ( Sun Young Kim ),김주옥 ( Ju Ock Kim ),정성수 ( Seong Su Jeong ),고동석 ( Dong Seok Ko ),서재철 ( Jae Chul Suh ),김근화 ( Geun Hwa Kim ),신경상 ( Kyoung Sang Shin ),송규상 대한결핵 및 호흡기학회 1998 Tuberculosis and Respiratory Diseases Vol.45 No.4