진행성 간세포암에 있어서 간절제술의 적응과 한계

손대호,김홍진,송기환,심민철,권굉보 대한외과학회 1996 대한외과학회 학술대회 초록집 Vol.1996 No.11

Fabrication of Cu2 ZnSn(S,Se)films by selenization of stack Precursor layers

손대호,김대환,김영일,양기정,박시내,심준형,강진규 한국공업화학회 2014 한국공업화학회 연구논문 초록집 Vol.2014 No.0

2단계 공정으로 제작한 CZTSSe 광흡수층 박막 및 소자 연구

손대호,김승현,김영일,김대환,강진규 한국공업화학회 2021 한국공업화학회 연구논문 초록집 Vol.2021 No.0

재난 안전 통신망

손대호 한국지능정보시스템학회 2021 한국지능정보시스템학회 학술대회논문집 Vol.2021 No.12

푸르니에 괴저의 치료에서 일시적 결장루를 대체한 변우회용 기구의 적용

손대호,정상훈,심민철,김재황 대한대장항문학회 2008 Annals of Coloproctolgy Vol.24 No.2

Recently developed BMSTM (Zassi Bowel Management SystemTM: Hollister Inc., Illinois, USA) can provide effective nonsurgical fecal diversion without the risks associated with colostomy creation and subsequent closure. Our aim is to evaluate the effectiveness of the BMS in diverting feces from the perianal wide surgical wound in patients with Fournier's gangrene. Methods: BMSTM was applied in five patients (male: 2, median age; 44) with Fournier's gangrene from January 2000 to September 2001. The treatments consist of three times a day wound dressing after wide surgical debridement and intravenous antibiotic therapy. For evacuation of feces, twice daily warm saline irrigation was administered via BMSTM or low daily doses of polyethylene glycol solutions were orally taken in. An endoscopic and anorectal manometric study was done to evaluate possible mucosal complications and anorectal functional changes. Results: The average duration of the BMS application was 41 (range, 22∼63) days. The result of a manometric study after immediate removal of the BMSTM showed a decreased mean resting pressure (range: 22∼36 mmHg) and a decreased mean squeezing pressure (range: 32∼39 mmHg). After 3 days, the sphincter pressure had improved markedly: mean resting pressures of 38, 45, 60, and 63 mmHg and mean squeezing pressure of 78, 89, 91, and 101 mmHg respectively. Fecal incontience was not noted in any patient. Other possible mucosal complications were not noted. There were no mortalit. Conclusions: BMSTM application in Fournier's gangrene patients after surgery successfully avoids a defunctioning colostomy. Furthermore, no significant complications were noted over a prolonged period up to 63 days.

SnS 및 ZnS 화합물 전구체를 이용한 CZTSSe 박막 태양전지 제작과 특성 연구

손대호,김승현,김영일,양기정,김대환,강진규 한국공업화학회 2019 한국공업화학회 연구논문 초록집 Vol.2019 No.1

최근 화합물 박막 태양전지 연구가 활발히 일어나고 있으며, 다양한 박막 물질이 개발되고 있다. 여러 물질 중 Cu₂ZnSn(S,Se)₄ (CZTSSe) 박막은 높은 광흡수율의 특성과 풍부한 매장량으로 각광받고 있는 물질 중 하나이다. 본 연구에서는 순수 금속 Cu와 황 화합물 SnS, ZnS 물질을 전구체로 사용하여 CZTSSe 박막과 태양전지 소자를 제작하였다. 또한 열처리 공정시 SeS₂/Se 양에 따라 CZTSSe 박막내의 S/Se 성분비 조절을 하였으며, 이에 따라 제작한 박막과 소자 특성을 확인하였다. ^** This work is supported by the DGIST R&D Programs of the Ministry of Science, ICT & Future Planning of Korea (19-BD-05)

2P-453 Fabrication of CZTSSe thin film solar cells

손대호,심준형,김영일,김승현,양기정,강진규,김대환 한국공업화학회 2017 한국공업화학회 연구논문 초록집 Vol.2017 No.1

CZTSSe thin films and devices have been prepared by a wide variety of techniques. Additionally, many methods have been employed with use of either metal or sulfur compound precursors. In nearly all cases a high-temperature process is used to react the precursors to form CZTSSe and improve crystalline quality of the films. However, there exists the possibility for loss of volatile components such as metallic Zn and Sn-Se at high-temperature annealing process of selenization. It is important to sufficiently anneal the thin films for high crystalline quality grains, but also to limit the detrimental effects of elemental loss. This study presents a detailed insight into the phase formation processes of CZTSe during the selenization of metal precursor. We also investigate the influence of annealing and precursor condition on CZTSSe film properties. ^**This work was supported by by the DGIST R&D Program of the Ministry of Science and ICT (17-BD-05).

개에서 thin layer chromatography 박층크로마토그라피 및 ELISA를 이용한 요중의 cortisol : creatinine비 측정

손대호,나기정,오태호,이혜숙,한홍율,Sohn, Dae-ho,Na, Ki-jeong,Oh, Tae-ho,Lee, Hye-sook,Han, Hong-ryul 대한수의학회 1999 대한수의학회지 Vol.39 No.5

This study was conducted to evaluate the ELISA kit for measuring the level of cortisol in the urine. The CV of within-run variation and day to day variation were 0.4~2.8 and 1.8~5.7, respectively. The minimum limitation of measurement was 1ng/ml. The cross reaction was high ($CR_{50}(%)=11.4{\sim}43.2$) in prednisolone, 11-deoxycortisol, 21-deoxycortisol and predinosone. There was low and no cross reaction in other steroid. To develop the ELISA kit we measured the cortisol level in diluted urine with PBS (procedure I), extracted urine with methylene chloride (procedure II) and extracted methylene chloride-extracted urine from thin-layer chromatography (procedure III). The CV value of procedure I, II, III was 9.4~28.3%, 7.2~8.9% and 2.5~5.7%, respectively. There was significant difference between procedure I with II, and pro-cedure I with III(p < 0.01), but no difference between procedure II with III significantly(p < 0.01). The mean UCCR of urine collected through am 8 to 10 was $9.5{\pm}7.6$(0.14~28.0) in 12-month-old dog(n = 47). In this study we can measure the cortisol level in extracted urine with methylene chloride and sequential thin-layer chromatography accurately using ELISA kit.

쇼트키 장벽 관통 트랜지스터 구조를 적용한 실리콘 나노점 부유 게이트 비휘발성 메모리 특성

손대호,김은겸,김정호,이경수,임태경,안승만,원성환,석중현,홍완식,김태엽,장문규,박경완,Son, Dae-Ho,Kim, Eun-Kyeom,Kim, Jeong-Ho,Lee, Kyung-Su,Yim, Tae-Kyung,An, Seung-Man,Won, Sung-Hwan,Sok, Jung-Hyun,Hong, Wan-Shick,Kim, Tae-You,Jang, Moo 한국진공학회 2009 Applied Science and Convergence Technology Vol.18 No.4

We fabricated a Si nano floating gate memory with Schottky barrier tunneling transistor structure. The device was consisted of Schottky barriers of Er-silicide at source/drain and Si nanoclusters in the gate stack formed by LPCVD-digital gas feeding method. Transistor operations due to the Schottky barrier tunneling were observed under small gate bias < 2V. The nonvolatile memory properties were investigated by measuring the threshold voltage shift along the gate bias voltage and time. We obtained the 10/50 mseconds for write/erase times and the memory window of $\sim5V$ under ${\pm}20\;V$ write/erase voltages. However, the memory window decreased to 0.4V after 104seconds, which was attributed to the Er-related defects in the tunneling oxide layer. Good write/erase endurance was maintained until $10^3$ write/erase times. However, the threshold voltages moved upward, and the memory window became small after more write/erase operations. Defects in the LPCVD control oxide were discussed for the endurance results. The experimental results point to the possibility of a Si nano floating gate memory with Schottky barrier tunneling transistor structure for Si nanoscale nonvolatile memory device.

예비유아교사의 낙관주의와 비관주의, 그릿, 스트레스 간의 경로분석

손대호,서현아 한국생태유아교육학회 2022 생태유아교육연구 Vol.21 No.1

This study aimed to verify the general tendency and path relationship between optimism, pessimism, grit, and stress of prospective pre-early childhood teachers. For the study, 569 prospective pre-early childhood teachers were selected from a total of eight locations, colleges and universities located in B-si, G-do. In addition, a survey was conducted on optimism, pessimism, grit, and stress experienced by the study subjects. Path analysis and mediating effects were analyzed using SPSS 25.0 and AMOS 25.0. The results are as follows. First, the average of optimism in pre-early childhood teachers was above average, pessimism was below average, and grit and stress were average. Second, the correlation between optimism, pessimism, grit, and stress of prospective pre-early childhood teachers had a statistically significant effect. Third, grit had a partial mediating effect in the relationship between optimism, pessimism, and stress in pre-early childhood teachers. 본 연구는 예비유아교사의 낙관주의와 비관주의, 그릿, 스트레스 간의 일반적 경향성과 경로관계를 검증하고자 실시되었다. 연구 대상으로 B시, G도에 소재한 3년제 대학 4곳, 4년제 대학 4곳 총 8곳에서 재학 중인 예비유아교사 569명을 선정하였다. 그리고 연구 대상에게 낙관주의와 비관주의, 그릿, 스트레스에 대한 설문조사를 실시하였다. 수집된 자료는 SPSS 25.0과 AMOS 25.0을 이용하여 경로분석과 매개효과를 분석하였다. 연구결과는 다음과 같다. 첫째, 예비유아교사의 낙관주의의 평균은 보통 이상, 비관주의의 평균은 보통 이하, 그릿과 스트레스는 평균 보통 수준으로 나타났다. 둘째 예비유아교사의 낙관주의와 비관주의, 그릿, 스트레스의 상관은 통계적으로 유의미한 효과를 가지는 것으로 나타났다. 셋째, 예비유아교사의 낙관주의와 비관주의, 스트레스 간의 관계에서 그릿이 부분매개효과를 가지는 것으로 나타났다.