알칼리 수전해용 음이온교환막의 대면적화에 관한 연구

봉수연,박종호,강성구,유철휘,황갑진 한국공업화학회 2013 한국공업화학회 연구논문 초록집 Vol.2013 No.-

Factors Affecting the Healing of Radial Fractures Using Acrylic Pin External Fixation in Small Breed Dogs

천봉수,이승진,석성훈,연성찬 한국임상수의학회 2019 한국임상수의학회지 Vol.36 No.2

Healing of 48 cases of radial fractures in small breed dogs treated with acrylic pin external fixation was evaluated retrospectively to investigate the factors affecting the healing of radial fractures. The mean age of the subjects was 15.02 months, the mean body weight was 3.48 kg, and the mean maximum length of the radius (MLR) was 90.77 mm. External skeletal fixation frames type 1a, 2a, and 3 were used; among them type 2a was used most frequently (75%). The mean time to clinical union (TCU) was 67.17 days, and the success rate was 95.8%. Age, bodyweight, MLR, and occurrence of complications increased TCU significantly. Among complications, pin loosening, swelling of the operated forelimb tissue for more than 2 weeks, and coexistence of two or more complications increased TCU significantly (p < 0.05). There was no relationship between location of the fracture and TCU. The results of this study may be useful to predict the prognosis of radial fractures in small dogs.

알칼리 수전해용 Ni-Fe 전극제조 및 특성 평가에 관한 연구

박종호,봉수연,유철휘,강성구,황갑진 한국공업화학회 2013 한국공업화학회 연구논문 초록집 Vol.2013 No.-

알칼리 수전해용 격막으로서 폴리염화비닐(polyvinyl chloride) 음이온교환막의 제조에 관한 연구

박종호,봉수연,유철휘,황갑진 한국막학회 2013 멤브레인 Vol.23 No.6

알칼리 수전해용 격막으로 사용하기 위해 음이온교환막을 제작하였다. 음이온교환막은 PVC (polyvinyl chloride)를 출발물질로 하여 클로로메틸화 및 아민화에 의해 제작하였다. 제작한 막은 막 특성(막 저항, 이온교환용량)을 평가하였다.제작한 음이온교환막의 1M NaOH수용액에서의 최저 막 저항은 2.9 Ω·cm2를 나타냈다. 이 막은 2.17 meq./g-dry-membrane의 이온교환용량과 43.4%의 함수율을 보였다. 제작한 음이온교환막의 막 특성을 시판의 막 특성과 비교 평가하였다. 1M NaOH수용액에서의 막 저항은 AHT>IOMAC>Homemade membrane>AHA>APS=AFN의 순으로 저항 값이 높았다. 이온교환용량은 Homemade membrane>AFN>APS>AHT>AHA>IOMAC의 순으로 높은 값을 가졌다. An anion exchange membrane was prepared for a separator in the alkaline water electrolysis. An anion ex-change membrane was prepared by the chloromethylation and amination of polyvinyl chloride (PVC) used as a base polymer. The membrane properties of the prepared anion exchange membrane such as the membrane resistance and ion ex-change capacity were measured. The minimum membrane resistance of the prepared anion exchange membrane was 2.9 Ω·cm2in 1M NaOH aq. solution. This membrane had 2.17 meq./g-dry-membrane and 43.4% for the ion exchange capacity and wa-ter content, respectively. The membrane properties of the prepared anion exchange membrane was compared with that of the commercial anion exchange membrane. The membrane resistance decreased in the order; AHT>IOMAC> Homemade mem-brane>AHA>APS=AFN. The ion exchange capacity decreased in the order; Homemade membrane>AFN>APS>AHT> AHA>IOMAC.

문제행동 청소년을 위한 대인관계 집단치료의 효과

이후경,김선재,윤성철,안현주,봉수연 대한신경정신의학회 2003 신경정신의학 Vol.42 No.5

Effects of Interpersonal Group Therapy for Adolescents with Behavioral Problems*

한 중소도시의 청소년 약물사용 실태조사

이후경,김선재,윤성철,봉수연,안현주,박선영 대한신경정신의학회 2001 신경정신의학 Vol.40 No.1

-초록- 연구목적: 약물사용의 가능성이 가장 높은 시기는 십대 후반에서 이십대 초반의 청소년기로 알려져 있다. 또한 청소년기의 약뮬사용은 빠른 의존의 가능성, 심각한 약물남용으로 진행할 가능성, 약물로 인한 공격성의 증가 등으로 심각한 사회문제가 될 여지가 많다. 그러므로 저자들은 중소도시에서 청소년 약물사용의 예방 및 치료를 위한 정책을 마련하는데 기초가 될 수 있는 청소년 약물사용 실태를 조사하는 것을 목적으로혹시청소년상담실의 기금을 받아 본 연구를 시행하였다. 저자들이 세운 연구가 설은 다음과 같다. 첫째, 나이, 성(性)과 같은 개인적 요인에 따라 청소년의 약물사용에 차이가 있을 것이다. 둘째, 가정, 또래집단과 같은 환경적 요인에 따라 청소년의 약물사용에 차이가 있을 것이다. 셋째, 음주, 흡연, 비행과 약물사용과는 상화관련이 있을 것이다. 방법: ㅎ시 4개 중학교 학생 833명(51.6%), 3개 고등학교 학생 780명(48.4%), 성별은 남자(49.5%), 여자(50.5%), 총 1613명을 대상으로 하여 1999년 7월 12일부터 14일까지 3일간 설문조사를 실시하였다. 결과: 1) 술(59.4%), 담배(34.4%)의 경험이 가장 높았고, 의약품 중에는 진통제(33.1%), 흡입제(inhalants)중에는 본드(0.7%), 마약류 중에서는 히로뽕(0.4%)의 사용이 가장 많았다. 2) 술, 담배, 수면제, 각성제, 신경안정제의 사용경험이 중학생 보다 고등학생이 거의 두 배 이상 높았다. 3) 약물을 사용하지 않는 학생의 부모 화목도 점수가 약물을 사용하는 학생의 부모 화목도 점수보다 의미 있게 높은 것으로 나타났다. 4) 흡연 및 음주경험이 있는 학생의 친구들이 그렇지 않은 학생의 친구들에 비해 술, 의약품, 흡입제를더 많이 사용하였다. 5) 술, 담배, 약물을 사용하는 학생들이 비행 가능성이 높았다. 6) 술을 사용하게 되는 가장 많은 이유는 '친구들과 어울리기 위하여'(55.0%), 담배를 사용하게 되는가장 많은 이유는 '심심해서'(50.9%)이었다. 7) 술, 담배, 약물을 사용하면 다른 것을 사용할 가능성이 높은 것으로 나타났다. 결론: 한국의 청소년 약물사용경험은 이제까지의 연구와 본 연구를 종합하여 볼 때 지속적으로 증가하고 있다. 향후 약물사용을 줄이기 위해서는 국가적인 차원에서 약물사용 실태조사가 선행되어야 하고, 그 결과에 따른 적절한 대책의 수립과 정신과 의사들의 적극적인 참여가 필요하다. Objectives : The purpose of this research is to help solve adolescent issues involving substance uses, which may become begin to undergo many changes(i.e.practising various roles, thereby leading to independent life styles). More often than not, adolescent drug problems develop into social problems, chiefly behavioral imitations and heavy dependence on medicine. The authors conducted a survey of adolescent substance uses to develop preventive measures against the drug habit prevalent among young people, thereby formulating a policy to deal with problematic community. Funded by a Yuth Counselling Center in the city of H. the research was conducted on the following assumptions that there will be : Firstly, a comparison of drug uses by sex and age ; Secondly, variance of substance users by family background and peer group ; Thirdly, a combination of heavy drinking, smoking and delinquency resulting in the drug habit. Methods : the survey included a total of 1613 students during 3 days, 12 through 14, July, 1999. The subjects were 833 pupils(51.6$) from 4 middle schools and 780 students(48.4%) from 3 high schools in the city of H with a ratio of 49.5%(males) and 50.5%(females). Results : 1) Experience of substance use is most referable to drinking(59.4%) and smoking(34.4%) while given to analgesics(33.1%) among medicines, glue(0.7%) among inhalants and philophone(0.4%) among narcotics. 2) High school students found more than double the amount of smoking and drinking as well as uses of hypnotics, stimulants and sedatives by junior high school students. 3) Our resalt showed was significantly noted that non-users had a better relationship with their parents than most users. 4) Smoking and drinking problean could be more easily developing into adolescent substance uses. 5) Alcohol, cigarette, and drug users showed more misconducts than other adolescents. 6) Most adolescents believe theat drinking is necessary for making friends(55.0%), while smo-king is just for killing time(50.9%) 7) Drinking, smoking, and other substance users were found to develop into more proble-matic habits. Conclusion : The present survey and several others show that adolescent substance uses in Korea are on the rise. Therefore, extensive counter-measures will be necessary followed by nationwide epidemiological survey of the pending issue, with the psychiatrists participating in the campaign.

품행장애 청소년을 위한 외래집단정신치료 치료요인

이후경,김선재,차정화,봉수연,안현주 대한신경정신의학회 2000 신경정신의학 Vol.39 No.2

연구목적: 집단정신치료는 또래집단을 중요시하는 품행장애 청소년의 치료로서 매우 효과적인 것으로 알려져 있으나 한국에서는 아직 활성화되지 못하고 있다. 이에 따라 저자들은 품행장애 청소년에게 효과적으로 적용될 수 있는 폐쇄형, 동질적인, 시간제한(10회), 외래집단정신치료를 주 1회 실시하였다. 본 연구의 목적은 ①품행장애 청소년을 대상으로 집단정신치료를 시행하여 효과성을 평가하고, ②치료요인을 조사하여, ③ 집단정신치료를 품행장애 청소년에게 효과적이면서 효율적으로 적용될 수 있는 치료방법으로 정착시키는 데 있다. 대상 및방법: 본 연구는 1998년 10월붜 12월까지, 1999년 4월부터 6월까지 두차례에 걸쳐 실시하였다. 대상군은 품행장애 범주에 해당하는 H고교 2학년 여학생 총 18명(4명 도중 탈락), 대조군은 같은 범주에 해당하는 H고교 2학년 여학생 중 치료에 참여하지 않은 총 18명(4명 도중 탈락)이었다. 평가도구로는 프로그램 실시 전후에 자기보고식 비행척도, 공격성척도, 충동성척도을 시행하였고, 매 회기가 끝난 직후 Yalom의 13가지 치료요인척도, 집단치료 만족도 설문지를 시행하였으며, 종결모임시 총평가 설문지를 시행하였다. 결과: 치료요인의 변화를 집단발단단계에 따라 전후반기로 나누어 비교하였을 때, 전반기(1∼5회)에 상위를 차지한 치료요인은 순서대로 실존적인자, 보편성, 카타르시스, 리더와의 동일시, 구성원과의 동일시이었으며, 후반기(6∼10회)에 상위를 차지한 치료요인은 카타르시스, 실존적인자, 리더와의 동일시, 구성원과의 동일시, 구성원의 조언이었다. 전반기에 비해 후반기에 상대적으로 카타르시스, 구성원의 조언이 상승하였고 보편성은 하락하였다. 이타주의와 일차가족집단의 교정적 반복발달은 전후반기 모두 최하위를 기록하였다. 집단치료 만족도 설문에서 전반기는 45.7%, 후반기에는 83.3%가 도움받는 것으로 나타났고, 총평가 설문에서 85.7%가 기회가 있다면 다음에도 참여하고 싶다고 보고하였다. 결론: 시간제한 외래집단정신치료가 품행장애 청소년 에게 적용할 때 매우 효과적이면서도 만족도가 높은 것으로 나타났다. 청소년을 대상으로 외래집단정신치료를 시행하는 것은 구성상의 어려움, 동기부족, 기금부족 등, 여러 제반 문제가 있으나 확대 시행되어야 할 것으로 생각된다. Objectives: Group psychotherapy is known to be an dffective treatment program for adolescents who attach importance to peer relationship, but it is not activated in Korea. Therefore, researchers performed weekly the closed, homogeneous, time-limited(10 sessions), outpatient group psychotherapy for adolescents with conduct disorder. Objectives of this study were as follows ; first, we practiced the group psychotherapy for adolescents with conduct disorder and evaluated its effectiveness ; second, we examined the therapeutic factors which were used by participants ; third, we intended to settlee down the group psychotherapy for adolescents with CD as an effective and efficient treatment modality. Methods: This study was performed two times from October to December in 1998 and from April to June in 1999. It was sponsored by Youth Counselling Center in H city. The case group were composed of 15 female students who were second grade in H high school, and 4 students were dropped out. The control group were composed of 18 female students who were same grade in H high school and 3 students were dropped out. Before and after this program, self-report delinquency scale, aggression scale and impulsivity scale were asked to them. And just after each session, Yalom 13 therapeutic factors scale and satisfaction questionnaire for group psychotherapy were asked to them. And at last meeting, total assessment questionnaire was asked to them. Results: We compared the change of therapeutic factors between the former half sessions (1-5) and the later half session(6-10), and the results were as follows ; in the former half, the upper ranks of therapeutic factors were existential factor, universality, catharsis, identi- fication with leader, and identification with members in order. And in the later half, the upper ranks of therapeutic factors were catharsis, existential factor, identification with leader, identi - fication with members, and guidance of members in order. The rank of catharsis and guidance of members went upward and the rank of universality went downward when we compared the ranks in the former half to those in the later half. Altruism and family enactment were the lowest ranked in both half. The satisfaction questionnair for group psychotherapy showed to be helped by participants at the rate of 45.7% in former half, 83.3% in later half. The total assessment questionnaire showed the willingness of re-participation at the rate of 85.7% if future opportunity of group psychotherapy is given for them. Conclusions: The time-limited group psychotherapy for adolescents diagnosed by conduct disorder was very effectively practiced and the participants reported high level of the satisfaction. The outpatient group psychotherapy for adolescents would be expanded and practiced though there are several accompanied problems including the difficulty of structuring, the deficit of motivation, and financial problem.

문제행동 청소년을 위한 대인관계 집단치료 효과

이후경,안현주,김선재,윤성철,봉수연 大韓神經精神醫學會 2003 신경정신의학 Vol.42 No.5

Objectives : Fast change and confusion of the value system in society affect the identity formation of adolescents. So Adlescents' behavioral problems seem to be increasing yearly. It is known that the interpersonal group therapy is the most effective treatment modality among many group programs for adolescents with behavioral problems. Objectives of this study are as follows ; first, evaluate therapeutic effects of the interpersonal group therapy for adolescents with behavioral problems second, examine the therapeutic factors ; third, analyze the group process : fourth, orgamize the group therapy for adolescents with behavioral problems as an applicable treatment modality. The types of group therapy performed in this study are small, closed, homogeneous, outpatient, timelimited, and adolescent group. Methods : This study was carried out at one of the adolescents mental health services in Uiwang Mental Health Center, from April to June and from September to November in 2000. The subjects were 2nd grade students in K middle school with behavioral proplems. The experimental groups were composed of 4 groups including 2 male groups and 2 female groups (male 11, female 17), and the control groups matched the same conditions as the experimental groups (male 10, female 19). The group therapy was performed weekly in CA (club activity) time, and it took 60-70 minutes at one time. They met total 10 sessions including preparatory meeting and termination meeting. Before and after this program, self-rating scales (behavioral problems, aggression, and impulsivity) were applied for subjects, and the teacher rating scales (behavioral problems, aggression and impulsivity) were performed by teachers in charge. After each session, Yalom's 13 therapeutic factors scale was perfbrmed. At the last meeting, total assessment questionnaire was compleled. Results : The mean scores of all self-rating scales (behavioral problem, aggression, and impulsivity) were lower in the experimental groups (both male and female group) than the control groups, but not significant statistically except the behavioral problem scale of female students. The mean scores of all teacher rating scales (behavioral problem, aggression, and impulsivity) were lower in the experimental groups (both male and female group) in comparison with the control groups, all significant statistically. As faras the therapeutic factors are concerned ; first, the mean scores of all therapeutic factors in female students were higher than in male students and the mean scores of all therapeutic factors in the later half sessions were higher than the former half sessions ; second, catharsis and existential factor were high in all students and sessions ; third, identification with therapist factor was high in all students and sessions : fourth, during the later half sessions, interpersonal input was relatively high in male students and socializing technique was relatively high in female students. Its forthe total assessment questionnaires ; 100% of male students and 88.2% of female students reported that they were helped by this group therapy ; 100% of male students and 82.4% of female students reported that they would participate willingly if future opportunity of the same group therapy is given for them. Conclusion : Adolescents with behavioral problems who participated in this study showed the decrease of behavioral problems and the change of aggressive and impulsive attitudes in comparison with the control groups although they had some differences between male and female students. The group therapy with adolescents would be practiced more broadly and extensively though there are several accompanied problems including the difficulty of structuring, the deficit of motivation, and financial problem.

중국 수자원분배 시행을 위한 남수북조공정 조사연구

주연연,임봉수 대전대학교 환경문제연구소 2015 환경문제연구소 논문집 Vol.19 No.-

Sevoflurane 및 Propofol이 상처 치유 과정에 미치는 영향: 혈류량과 상처 크기의 비교

최봉수 ( Bong Soo Choi ),이현정 ( Hyeon Jeong Lee ),최현주 ( Hyun Ju Choi ),정규연 ( Kyu Yeon Jung ),김철홍 ( Cheul Hong Kim ),신상욱 ( Sang Wook Shin ) 대한마취과학회 2009 Korean Journal of Anesthesiology Vol.56 No.3

Background: As the wound healing is a multi-factorial process, the anesthetic agent and the duration of its exposure may influence the healing process after surgery. This study investigated the effect of anesthetic agents and duration of its exposure on the wound healing process after operation. Methods: Total 32 rats weighing 200-300 g were randomly allocated to one of eight groups according to the exposure time (1, 2, 4, 8 hours) of sevoflurane or propofol (n=4 each). After wounding under the each anesthetic, anesthesia was maintained for 1, 2, 4 and 8 hours in each group. We compared the skin blood flow around the wound and the wound size at baseline, 3 days, and 7 days postoperatively. Results: In sevoflurane group, short exposure group (1, 2 hours) showed higher wound blood flow than long exposure (4, 8 hours) at 3 days after wounding (P<0.05), but not at 7 days after wounding. For the wound size, there was no difference at 3 days after wounding in sevoflurane group, but 8 hours exposure group had the largest wound at 7 days after wounding. In propofol group, wound blood flow showed no difference at 3 days after wounding, but that of 4, 8 hours exposure group was higher than 2 hours exposure group at 7 days after wounding. There was no difference in wound size in propofol group. Conclusions: This study implicates that sevoflurane might influence the wound healing process more prominently than propofol according to the duration of exposure time. (Korean J Anesthesiol 2009; 56: 313~8)