승온중 수소 분위기 제어에 의한 선택적 Si 에피텍시 성장

손용훈,박성계,김상훈,남승의,김형준,Son, Yong-Hun,Park, Seong-Gye,Kim, Sang-Hun,Nam, Seung-Ui,Kim, Hyeong-Jun 한국재료학회 2002 한국재료학회지 Vol.12 No.5

we proposed the use of $Si_2H_ 6/H_2$ chemistry for selective silicon epitaxy growth by low-pressure chemical vapor deposition(LPCVD) in the temperature range $600~710^{\circ}C$ under an ultraclean environment. As a result of ultraclean processing, an incubation period of Si deposition only on $SiO_2$ was found, and low temperature epitaxy selective deposition on Si was achieved without addition of HCI. Total gas flow rate and deposition pressure were 16.6sccm and 3.5mtorr, respectively. In this condition, we selectively obtained high-quality epitaxial Si layers of the 350~1050$\AA$ thickness. In older to extend the selectivity, we kept high pressure $H_2$ environment without $Si_2H_6$ gas for few minutes after first incubation period and then we conformed the existence of second incubation period.

북한이탈 청소년의 외상후 스트레스가 정신건강에 미치는 영향

손용훈,이주실,박민철,이상열,Son, Yong-Hun,Lee, Ju-Sil,Park, Min-Cheol,Lee, Sang-Yeol 대한불안의학회 2010 대한불안의학회지 Vol.6 No.1

Objectives : This study investigated the influence of traumatic experience on the ego identity, self-esteem, and general psychopathology of adolescent North Korean refugees. Methods : The participants were 146 adolescents North Korean refugees who attended H High School for North Korean refugees. We divided the subjects into two groups according to the severity of their traumatic experience : the more-traumatic-experience group and the less-traumatic-experience group. Each group performed self-report assessments including an assessment to reveal demographic characteristics, the Traumatic Experiences Scale for North Korean Defectors, the Scale for Ego identity, the Scale for Self-esteem and the Symptom Check-90-Revision (SCL-90-R). Statistical analysis of t-test and multiple regression utilized SPSS 12.0 for Window for comparison between more-traumatic-experience group and less-traumatic-experience group. Results : The prevalence of posttraumatic stress disorder among adolescents North Korean refugees was 37%. The factor with the greatest influence on ego identity was length of time living in South Korea, while, for self-esteem the most influential factor was perception of health. The more-traumatic-experience group had lower self-esteem scores on some subscales of the Scale for Ego identity. They had higher scores on all SCL-90-R subscales than the less-traumatic-experience group. Conclusion : Adolescent North Korean refugees experienced high rates of posttraumatic stress disorder. The more traumatic-experience-group had lower self esteem and poorer ego identity and mental health than the less-traumatic-experience group.

농촌지역활성화를 위한 볼룬투어리즘 발전방안

김도훈(Kim, Do-Hun),조혜령(Zoh, Hyeryeong),B.D.M.C.S.Wijethunga,손용훈(Son, Yong-Hoon) 한국지역사회생활과학회 2013 한국지역사회생활과학회 학술대회 자료집 Vol.2013 No.4

Volunteer tourism is a “mix of work”, combines leisure, travel and voluntary work and emerges popularity as an alternative tourism trend. Though, literature relates with socio-cultural movements and volunteer tourism need to be developed. Our research focuses on WWOOF (World Wide Opportunity in Organic Farming), an Organic farming and slow food movement and its contribution towards volunteer tourism. Within the study host and guest inter connections taken into research in finding motivations, constrain and benefits regarding WWOOF movement in Korea. Research mainly consider on contributing new theoretical frame work and concluding experiences gained by both host and guest communities. Grounded theory (GT) taken as the research methodology which sets out to discover new theoretical insights and an inductive. Moreover GT’s strength on qualitative research that focuses on data depth and quality.

의학과 4학년 선택실습으로서의 해부학

공태환(Tae-Hwan Kong),김상훈(Sang-Hun Kim),손용훈(Yong-Hun Son),정기상(Ki-Sang Chung),진호경(Ho-Kyung Jin),장혜원(Hye Won Jang),오창석(Chang-Seok Oh) 대한체질인류학회 2016 해부·생물인류학 (Anat Biol Anthropol) Vol.29 No.1

의학과 4학년 5명이 선택실습 (Elective course)으로 해부학을 선택했다. 1개월간 시신 1구를 해부했으며, Digital Report를 조사했다. 학생들의 연구주제는 갑상샘의 모양 및 잘록의 위치, 왼, 오른심장동맥의 분지, 콩팥혈관과 요관의 위치관계 및 콩팥깔때기 모양, 정중신경의 원엎침근 통과유형, 손등에서 손가락폄근의 양상 등이었다. 한편, 이자 부분절제술을 받은 시신에 남아 있는 이자꼬리부분과 간에서 조직을 절취하여, H&E 염색 후 광학현미경으로 관찰했다. 실습 마지막 단계에서, 해부 및 Digital Report 조사, 광학현미경 관찰 소견을 토대로 소논문을 작성하였다. 교수의 관점에서 볼 때, 의학과 4학년의 해부학실습은 1학년의 실습과는 큰 차이가 있었고, 교육적으로 많은 긍정적인 효과가 있었다. Five medical students in the fourth-year took anatomy as their elective courses for 1 month. They dissected one cadaver, and investigated Digital Report, under the course subjects as follows; (1) the shape of thyroid gland and the location of its isthmus, (2) the branches of left and right coronary arteries, (3) the number of blood vessels and bronchi on the hilum of lung, (4) topographical relationship of the renal vessels and ureter, and the shape of the renal pelvis, (5) the location and attachment of the appendix, (6) the penetration of median nerve through the pronator teres, (7) the sensory nerves and the extensor tendons on the dorsum of hand, (8) the branches of deep femoral artery. The pancreatic and live samples were processed and stained with H&E, for LM observation, since the individual had suffered from pancreatic cancer and got a Pylorus preserving pancreatico-duodenectomy (PPPD). At the last step of the elective course, students wrote small articles following the conventional method for writing manuscript. From the viewpoint of professor, the anatomy course for the fourth-year students were definitely different from that for first-year students, and had many positive effects in terms of anatomy education.

연료전지 전압 특성을 고려한 100㎾ 계통 연계 인버터 설계

장주영(Ju-Young Jang),정우택(Woo-Taek Joung),문상호(Sang-Ho Moon),이정흠(Jeong-Hum Lee),손용훈(Yong-Hun Son),김민규(Min-Kyu Kim) 전력전자학회 2012 전력전자학술대회 논문집 Vol.2012 No.7

정신분열증 환자와 우울증 환자의 MMPI-2 프로파일

고윤화,손용훈,윤정흠,오상우,이귀행,박민철 圓光大學校 醫科學硏究所 2008 圓光醫科學 Vol.23 No.2

Background: Minnesota multiphasic personality inventory-2(MMPI-2) is superior to its predecessor in differential diagnosis. this study was to investigate MMPI-2 profiles of the patients with schizophrenia and depression and to discriminate among two groups. Methods: The sample consisted of 35 patients with schizophrenia(male 24, female 11), 35 patients with depression(male 18, female 17) diagnosed by the diagnostic and statistical manual of mental disorders(DSM-IV) for schizophrenia & depression at department of neuropsychiatry in WonKwang University from January 2005 to December 2007. The data from the results were analyzed statistically by t-test and discriminant analysis. Results: The results were as follows. First, according to t-test results the comparison of schizophrenia patients and depression patients in MMPI-2 among two groups showed significant differences; the validity scales: F, F(P); The clinical scales: D, Pa; The restructured clinical scales: Rcd(dem), RC4, RC6, RC8; The content scales: ANX, DEP, BIZ; The supplementary scales: AGGR, PSYC, Mt, GF, O-H. Second, as a results discriminant analysis, BIZ, D were significant predictors in distinguishing patients with schizophrenia from patients with depression. Third, probability to be discriminated schizophrenia in schizophrenia was 91.4%, probability to be discriminated depression in depression was 85.7%. Conclusion: Finally, we remind readers that although the MMPI-2 may prove to be useful in the task of differential diagnosis, it should be used only in combination with other patient information. 배경: MMPI-2는 감별진단에서 기존의 MMPI 보다 더 우수하다. 본 연구는 정신분열증 환자와 우울증 환자의 MMPI-2 프로파일과 두 집단을 판별하는 연구를 하였다. 방법: 2005년 1월부터 2007년 12월까지 원광대학교 병원 신경정신과에서 정신분열증과 우울증으로 진단된 정신분열증 환자 35명(남성 24명, 여성 11명), 우울증 환자 35명(남성 18명, 여성 17명)이 본 연구에 참여하였다. 자료는 t-검증과 판별분석으로 분석하였다. 결과: 결과는 다음과 같다. 1. t-검증 결과, 두 집단간 유의미한 차이를 보인 척도들로는 타당도 척도에서 F, F(P) 척도, 임상척도에서 D, Pa, 척도, 재구성 임상척도에서 Rcd(dem), RC4, RC6, RC8척도 였다. 내용척도에서는 ANX, DEP, BIZ척도 였으며 보충척도에서는 AGGR, PSYC, MT, GF O-H척도 였다. 2. 판별 분석 결과로서, 정신분열증과 우울증을 구별하는데 가장 유의한 예언요소는 BIZ, D척도로 나타났다. 3. 판별함수를 통한 진단율은 정신분열증을 정신분열증으로 판별해주는 정확도는 91.4%였고, 우울증을 우울증으로 판별해주는 정확도는 85.7%였다. 결론: 본 연구 결과를 통해서 MMPI-2가 두 집단을 감별하는데 유용하다고 증명되었을지 모르지만 더욱 정확하게 감별하기 위해서 환자의 기타 정보를 사용해야 할 것이다.

반복적인 피부 출혈을 주소로 한 둔부 혈관기형 : 증례보고 A case report

김형태,김홍,조원현,손용훈,손대구 대한혈관외과학회 2001 Vascular Specialist International Vol.17 No.1

Congenital arteriovenous malformation is one of developmental anomaly of vascular system. Since the lesion consist of abundant vascular component, feeding arteries and draining vessels, most of the lesions show poor demarcation and even show invasion to the adjacent tissues. Because of this characteristics, management of this malformation is troublesome. Selective arterial embolization and excision of the lesion is one of the recommended management. We experienced congenital arteriovenous malformation at the buttock of 18 years old male patient. He had been performed multiple feeding arterial embolization using Histoacryl with lipiodol 2 years ago because of repeated bleeding. But that buttock bleeding recurred 2 years later. After confirmation of the lesion by MRI and angiogram, wide excision and ligation of feeding artery was done. The wound was repaired by posterior thigh flap.