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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
강동원(Dong-Won Kang),서정우(Jeong-Woo Seo),최진승(Jin-Seung Choi),최재봉(Jae-Bong Choi),탁계래(Gye-Rae Tack) 대한전기학회 2014 전기학회논문지 Vol.63 No.6
The purpose of this study was to extract accurate parameters of facial movement features using 3-D motion capture system in speech recognition technology through lip-reading. Instead of using the features obtained through traditional camera image, the 3-D motion system was used to obtain quantitative data for actual facial movements, and to analyze 11 variables that exhibit particular patterns such as nose, lip, jaw and cheek movements in monosyllable vocalizations. Fourteen subjects, all in 20s of age, were asked to vocalize 11 types of Korean vowel monosyllables for three times with 36 reflective markers on their faces. The obtained facial movement data were then calculated into 11 parameters and presented as patterns for each monosyllable vocalization. The parameter patterns were performed through learning and recognizing process for each monosyllable with speech recognition algorithms with Hidden Markov Model (HMM) and Viterbi algorithm. The accuracy rate of 11 monosyllables recognition was 97.2%, which suggests the possibility of voice recognition of Korean language through quantitative facial movement analysis.
고효율 실리콘 박막태양전지를 위한 신규 수소저감형 비정질실리콘 산화막 버퍼층 개발
강동원(Dong-Won Kang) 대한전기학회 2016 전기학회논문지 Vol.65 No.10
We propose a novel hydrogen-reduced p-type amorphous silicon oxide buffer layer between TiO₂ antireflection layer and p-type silicon window layer of silicon thin film solar cells. This new buffer layer can protect underlying the TiO₂ by suppressing hydrogen plasma, which could be made by excluding H2 gas introduction during plasma deposition. Amorphous silicon oxide thin film solar cells with employing the new buffer layer exhibited better conversion efficiency (8.10 %) compared with the standard cell (7.88 %) without the buffer layer. This new buffer layer can be processed in the same p-chamber with in-situ mode before depositing main p-type amorphous silicon oxide window layer. Comparing with state-of-the-art buffer layer of AZO/p-nc-SiOx:H, our new buffer layer can be processed with cost-effective, much simple process based on similar device performances.