The Use of μ3-Imido Clusters in Organic Synthesis

송정섭 선문대학교 자연과학대학 2000 자연과학논총 Vol.3 No.-

μ_(3)-NPh 리간드롤 지니는 iron cluster와 여러 종류의 친핵체를 반풍시 켜 얻어지는 acyl imido cluster를 산 혹은 alkylating 시약과 반응시켜 NPh를 포함 하는 유기화합물올 합성하였다. 이들 결과는 방향족 니트로화합물의 카르보닐화 반응에서 이 반응이 carbene-imido coupling mechanism에 의하여 진행될 수도 있음을 보여준다. Reactions of Fe_(3)(μ_(3)-NPh)(CO)_(10) with various nucleophiles were examined and the organic product containing a NPh moiety were formed upon protonation and alkylation of the resultant acyl imido clusters. The results presented in this paper also provides an effective model for the intermediacy of an imido-methoxycarbonyl ligated species involved in the catalytic carbonylation of nitroaromatics.

정신훈련이 아동들의 정신기술, 신체효능감과 경쟁불안에 미치는 효과

송성섭,김정수 世明大學校 1998 世明論叢 Vol.7 No.-

The purpose of this study was to examine the effect of mental training on mental skill, physical self-efficacy, and competition anxiety. The subjects were randomly assigned to experiment group and control group in which included group grade 69 students; 40 involved in experimet group and 29 involved in control group. Teacher and stduents were instructed about the purpose of this study, instruction contents, and education of mental training before experimene treatment. Pre-test were measured with mental skill, physical self-efficacy, and competition anxiety, mental skill was included with subcomponents of relazation, stress, positive thought, and goal-setting, mental training program was treated for the 20 minute a day on 2 months. Post-test was used with same questionnaire of Pre-test. The conclusions are as followings ; 1. The mental training program has an statistically influence in the relaxation. 2. The mental training program has an statistically influence on the goal-setting. 3. The mental training program does not have an influence on the stress. 4. The mental training program does not have an influence on the positive thought. 5. The mental training program does not have an influence on the physical self-efficacy. 6. The mental training program does not have an influence on the competition anxiety.

여자 초·중·고등학생의 최대산소섭취량 추정에 관한 연구

송성섭,김정수,이병근 世明大學校 1998 世明論叢 Vol.7 No.-

The purpose of this study was to produce regression equation of VO2 max prediction appropriated to elementary, middle and high school female stduents, and to evaluate the validity of their predictions. The prediction of VO2max(1/min, ml/kg/min and ml/FFW/min) were obtained by multiple regression procedures from a sample of 53 students, aged 7-17 years. The prediction for VO2 max were obtained from the subjects age, height, weight, %fat and fat-free weight. From the result of multiple regression for VO2 max, the following equations were obtained. ?? The multiple correlations and relative errors of estimate for the predictions in 1/min(No. 1, 2, 3) were quite similar(R=0.81, 0.79, 0.81; CV=+19.0%, +19.9%, +19.2%). The multiple correlations for the prediction in ml/kg/min(No. 4,5,6) were quite similar(R=0.44, 0.38, 0.42; CV=+18.5%, +18.7% and +18.5%). And the multiple correlations and relative errors of estimate for the predictions in ml/FFW/min(No. 7,8,9) were quite similar(R=0.66,0.65,0.55; CV=+21.3%, +21.4% and +22.4%). The validity of prediction equations was tested from the validity group(7-17 years, 19girls). It is 0.36-0.61 for eqution 1-3, 0.27-0.44 for equation 4-6, and 0.23-0.32 for equation 7-9. Theire prediction equations were quites stable, % errors approximately -8.2∼-11.7%. Its indicated that resonably and accurated estimate of VO2 max for the female atudents may be obtained from their age, height, weight, %fat and fat-free weight, but that the predictive equations in this study was not suitable to elementary students.

물분쟁의 해소를 위한 기술적·제도적 측면과 사회적 장애 : 용담샘의 사례 Case Study of Yongdam Dam

윤근섭,宋正基 全北大學校 1996 論文集 Vol.42 No.-

The purpose of this research is to analyse conflict circumstances between the two regions (Chonbuk and Chungcheong) of Keum-Kang river basin and furthermore to suggest the ways of solving water-dispute from the viewpoint of technological and institutional aspects. In this study, I found the two regions' conflict is due to the probelm how to keep the appropriate amount of water in Keum-Kang river basin. I also suggest to develop a new coordinate procedure for solving this problem. Nevertheless, the best possible choice for this problem is to develop a way of integrating it with the consideration of social barriers accompanied by water-resource development projects.

노인복지 만족요인분석과 지방정부의 정책방향

김정헌,오현숙,송건섭 한국정책학회 2004 韓國政策學會報 Vol.13 No.1

노인복지만족도에 영향을 미치는 요인으 무엇이며, 지방정부는 어떤 역할을 해야하는가?를 분석하였다. 노인복지만족도에 가장 영향력 있는 변수는 인구학적 변수중에는 건강수준 및 종교요인, 개인 및 환경요인은 가족관계, 자원봉사, 노인공경, 여가활동 등으로 나타났다. 노인복지 만족도를 향상시키기 위해서는 단편적인 서비스를 제공하는 것이 아니라 노인의 개인적?환경적 요인을 고려하여 서비스 체계를 연계하는 복합적이며 종합적인 서비스 대책이 중요하다. 이를 위해서 정부, 지역사회, 노인, 노인 복지 담당기관 및 서비스 전달자, 사회복지사 등이 연계적으로 협력하는 과정이 필요하다. 단기적으로 고립감 해소를 위한 전문상담기관 네트워크 구축, 사회교육, 규칙적인 운동, 종교활동의 기회를 제공할 수 있는 프로그램 개발, 사교활동을 할 수 있는 문화공간의 마련, 가족관계의 질을 향상시키기 위한 가정생활교육 프로그램 실시 등이 필요하다. 장기적으로 저소득 노인을 위한 자립지원정책, 지원사업도모, 노인강사은행 구축, 노인복지카드제도 실시 등의 정부차원의 정책적인 노력의 전개가 필요하다.

지역경찰에 대한 시민 불평과 해소전략

김정헌,송건섭 大邱大學校 社會科學硏究所 2001 社會科學硏究 Vol.9 No.1

지방자치가 실시된 지 수년이 지난 지금에도 경찰조직은 중앙집권적이고 권위주의적 강압적 행태를 견지하고 있다. 경찰공무원의 불공정한 법 집행, 정치관여, 권한남용, 인권무시, 비행 등은 시민들로부터 신뢰를 상실하여 시민들의 지지와 협조를 확보 하는데 많은 어려움이 있다. 경찰의 이러한 행태는 대 국민 인식 저하는 물론 시민으로부터 불평과 비난을 받고 있는 것이 현실이다. 본 연구는 지역의 경찰에 대한 시민의 태도와 불평을 조사하고, 이러한 경찰에 대한 시민의 불평이 개인적 특성에 따라 어떠한 차이가 있는지를 검증하였다. 경찰에 대한 시민의 불평은 경찰업무태도, 경찰에 대한 부정적인 시각, 경찰의 나쁜 이미지에서 발생한 것으로 판명되었다. 이러한 불평을 해소하고 신뢰를 회복하기 위해서는 경찰과 시민의 공동문제해결, 지역사회문제를 해결하기 위한 모임형성, 대민관계 개선이 필요하다.

부유대역 용융응고법으로 제조된 YBa_2Cu_3O_x 산화물초전도체의 미세구조와 전기적 특성

노태형,송정환,장규철,한이섭,김소정,구본급,김호기 대전산업대학교 반도체기술연구소 2000 半導體技術硏究所報 Vol.2 No.-

The YBa_2Cu_3O_x-20 wt% Y_2BaCuO_5 composition designed in YBCO system was synthesized by solid state reaction method. The optimum condition of hot zone temperature and growth rate in floating-zone melt were 1080 ℃ and 2.5 mm/hour, respectively. In samples growth as these condition, the low angel boundaries in grain direction and small amount of amorphous phase known as decreasing characteristics of superconducting materials between grain boundaries in microstructure are investigated by polarized light microscopy on the whole. The critical current density(Jc) at 77k of sample using powder fabricated with no CeO_2 and doped 5 wt%CeO_2 were 8,000 A/㎠(Jc : 561A) and 12,000 A/㎠(Jc: 826A) at 0 T by direct current transport method, respectively.

炭素纖維板으로 補强한 鐵筋콘크리트보의 構造的擧動에 관한 實驗的 硏究

김하진,고송균,박영배,조창호,김정섭 朝鮮大學校 建設技術硏究所 1998 建設技術硏究 Vol.18 No.1

This study is a part of research to improve the yield strength of concrete structure with a structural damage and conducts the experiment with the variables such as the period of restrengthening of specimen, restrengthening length (1.9m, 1.5m, 1.0m) and restrengthening effect according to restrengthening mehthod of restrengthening materials (nonrestrengthening, Anchor, Angle) to test bending behavior and yield strength performance of reinforced concrete beams restrengthened with carbon fiber laminate. As a result of experiment, in the restrengthening effects by the period of restrengthening, specimen restrengthened before loading, during reloading and after loading show 1.9m, 1.5m and 1.0m respectively, in the restrengthening effects according to restrengthening length, specimen restrengthened with 1.9m, 1.5m and 1.0m show 113.7%, 122.4% and 112.7% and in restrengthening effects according to restrengthening method of restrengthening materials, non-restrengthening and restrengthening in anchor and angle show 113.7%, 115.9% and 184.4% of increase in yield strength respectively. Accordingly, the specimen restrengthened during loading, the specimen with 1.5m of restrengthening and the specimen restrengthened with angle show high restrengthening effects respectively. With the above results, a crack is closed by elastic behavior in the case of test materials, but since in the actual concrete strucutre, a crack is not closed like the specimen during loading, the influence of it on restrengthening should be considered. It is found that although restrengthening effect by the restrengthening length secures a sufficient length, the increase of yield strength by restrengthening cannot be expected when bonded performance is not secured and in deciding restrengthening method of restrengthening materials, the method which have not damage to restrengthening materials and can be integrated with restrengthening materials and structure is effective.

사회복지전문요원의 이직의도 영향요인에 관한 연구

이곤수,김정헌,송건섭 韓國福祉行政學會 1999 복지행정논총 Vol.9 No.-

연쇄알구균 감염에 의한 급성 인후염 후 반응성 관절염 1예

박은하,도연실,양정채,강미라,서현주,정숙인,손준성,기현균,오원섭,백경란,송재훈 대한감염학회 2004 감염과 화학요법 Vol.36 No.6

연쇄알구균에 의한 급성 인후염 후 발생한 반응성 관절염은 급성 류마티스열의 개정된 진단기준을 충족하지 못하면서, 지속적 혹은 재발성의 비이동성 관절염과 발열, 홍반성 결절, 일시적 간기능 이상 등을 보이면서 심장염과 무도증을 드물게 동반하는 질환이다. 따라서, 발열을 동반한 급성 관절염 환자에서 감별해야 할 질환 중의 하나이며, 심근염 예방을 위한 페니실린 요법의 적응증 및 기간에 대해서는 아직 이론이 많은 상황으로, 보다 광범위한 연구가 필요하다. 저자들은 연쇄알구균에 의한 급성 인후염 1주 후에 발생한 하지의 다발성 비이동성 관절염과 함께 결절홍반 및 일시적 간기능 이상을 보인 환자에서 PSRA로 진단하고 비스테로이드성 항염증제 및 스테로이드로 성공적인 치료를 하였기에 이를 문헌 고찰과 함께 보고하는 바이다. Poststreptococcal reactive arthritis (PSRA) is associated with recent streptococcal infections. However, PSRA is distinct from acute rheumatic fever by its clinical manifestations: non-migrating arthritis, erythema nodosum or erythema multiforme, and transient elevation of serum transaminases. We experienced a 33-year-old man who presented with fever, arthritis of both knees and ankles, and erythema nodosums on extensor surfaces of lower legs which developed 6 days after the onset of pharyngitis symptoms. Blood and urine cultures were negative. Throat culture was negative for group A β-hemolytic streptococcus. The ASO titers increased up to 2080 IU/mL in sequential monitoring. The result of bone scan was compatible to arthritis of both knees and ankles. There were no signs or symptom of carditis. He showed clinical improvement with anti-inflammatory drugs (naproxen 1,000 mg/day and prednisolone 7.5 mg/d). PSRA should be included in the differential diagnosis of patients presenting with arthritis combined with fever.