1,1-Diphenyl-2-methyl-1,2-propanediol의 산촉매 자리옮김

백영숙 慶熙大學校 1994 論文集 Vol.23 No.-

1,1-Diphenyl-2-methyl-1,2-propanediol 1 was synthesized to study the effect of solvents on the acid-catalyzed rearrangement reaction. Compound 1 was treated with concentrated sulfuric acid, acetic anhydride with trace amounts of sulfuric acid, trifluoroacetic acid, and various concentrations of trifluoroacetic acid/acetic acid. The products of compound 1 in these solvents system were examined by NMR spectra. The product ratios of 3,3-diphenylbutanone 2 and α,α-dimethylpropiophenone 3 were dramatically changed in different acidic media or even in different ratios of trifluoroacetic acid/acetic acid solution; the ratio of methyl migration to phenyl migration was 97:3 in trifluoroacetic acid and 59:41 in 30/70 trifluoroacetic acid/acetic acid. It was concluded that the effect of solvent is very important factor for the study of pinacol rearrangement.

정신보건센터 재활프로그램 참여.비참여 만성정신장애인의 자가관리 및 가족부담감 비교 연구

백영숙,정안순,Baek, Young-Suk,Jeong, An-Soon 한국가정간호학회 2011 가정간호학회지 Vol.18 No.1

Purpose: This study propose basic materials to prepare the mentally disabled for rehabilitation nursing mediating plans, by comparing the degree of self-care of the chronically mentally disabled residing in community mental health centers between those who participate in daytime rehabilitation programs and those who do not as well as the degree of perceived burden of the two groups' families. Method: The subjects of the study were 51 chronically mentally disabled men, who participated in daytime rehabilitation programs in three mental health centers in Gyeonggi-do and their families, and 53 in-house chronically mentally disabled men, who did not participate and their families. The measuring instrument for self-care consisted of ten spheres (65 questions and 5 points a standard). To quantify the feeling of burden of families, the measuring equipment developed by Montgomery et al. was used. Results: The degree of self-care of chronically mentally disabled men participating in rehabilitation programs in community mental health centers were higher than that of men not participating, and there was a significant difference between them. Families in the group not participating in rehabilitation programs had higher score than those in the group participating, but there was no significant difference. Conclusion: The participation of the chronically mentally disabled in rehabilitation programs influenced improvement of self-care and also lessened a feeling of burden of families somewhat.

급성 폐혈증형 돼지단독예에서 분리한 Erysipelothrix rhusiopathiae의 생화학적 특성 및 약제감수성

백영숙,조길재,김봉환,Baek, Young-sook,Cho, Gil-jae,Kim, Bong-hwan 대한수의학회 1990 大韓獸醫學會誌 Vol.30 No.4

The present study was conducted to investigate biochemical properties and antimicrobial drug susceptibilities of 47 strains of E rhusiopathiae isolated from the cases of acute septicemic swine erysipelas in Youngnam and Kyunggi provinces during the period from June 1988 to December 1989. The isolants were identified as E rhusiopathiae on the basis of cellular and colonial morphology, and characteristic reactions in some biochemical tests. All the organisms produced hydrogen sulfide in triple sugar iron agar and showed the characteristic "pipe cleaner" type of growth in gelatin stab cultures. The majority of biochemical and cultural properties of E rhusiopathiae isolated from pigs affected with acute erysipelas were identical to those of the reference strains employed. All the isolates were highly susceptible to penicillin G, ampicillin, erythromycin (MIC:0.025~0.39IU or ${\mu}g/ml$), and moderately susceptible to oleandomycin, oxytetracycline, chloramphenicol(MIC:$0.78{\sim}25{\mu}g/ml$). Kanamycin and sulfadimethoxine showed no activity against the isolates(MIC:>$400{\mu}g/ml$). The MICs of dihydrostreptomycin presented two distribution peaks; of 47 strains, 5(10.6%) were resistant to dihydrostreptomycin (MIC:$400{\mu}g/ml$), while the majority of them were susceptible to the drug.

유아기 그림 유우머 설명정도 및 감지정도와 창의성과의 관계

백영숙,손혜숙 경인여자대학 1997 경인논집 Vol.- No.6

The aim of this study is an attempt to understand children more effectively through the relationship between comprehension of pictorial humor and creativity in early childhood. Children's explanation of pictorial humor was analysed to ascertain : (1) the effect of age on the children's explanation of pictorial humor stimuli, (2) the effect of age on the children's appreciation of pictorial humor stimuli, (3) the rating of creativity on children's explanation of pictorial humor and (4) the rating of creativity on children's appreciation of pictorial humor. For this purpose, the explanation of pictorial humor and the appreciation of pictorial humor and integrated creativity were tested. Three major themes were used by Kang(1982). They consisted of themes such as taboo, aggression and sophistication. These themes were used in the current study to construct three pairs of drawings as humor stimuli. The children's explanations of pictorial humor were classified into four categories originally developed by Brown (1993). To measure creativity, the Integrated Creativity Test for four to six-year-old Korean Children developed by Chun (1995) was used. The subjects of this experiment were 90 four to six-year-old children who attended Kindergartens in Seoul and Pundang. The children were individually given the Humor Stimuli and Creativity Test. The analysis of data employed a oneway ANOVA and the Duncan test significance through SPSS/PC+. The results and conclusions of this study are as follows. 1) There were partly significant age differences in the rating of children's explanation of pictorial humor. That is, the six-year-old group showed higher explanation levels than the four-year-old and the five-year-old groups. 2)There were no significant age differences in the rating of children's appreciation of pictorial humor. That is, the higher old age group didn't show higher appreciation levels than lower old age groups. 3) There were significant differences in the explanation levels of pictorial humor in the rating of creativity. That is, the higher explanation levels of pictorial humor group ?? showed higher creativity scores than the lower explanation levels of pictorial humor group children. 4) There were no significant differences in the appreciation levels of pictorial humor in the rating of creativity. That is, the higher appreciation levels of pictorial humor group children didn't show higher creativity scores than the lower appreciation levels of pictorial humor group children. The above-mentioned findings were interpreted and discussed in terms of theoretical background and previous research findings. Some suggestions were presented for further study.

보육교사의 소진, 과학교수불안 및 과학교수효능감 간의관계에서 과학교과교육학지식의 매개효과

백영숙,김동례 한국보육지원학회 2016 한국보육지원학회지 Vol.12 No.6

The purpose of this study was to analyze the mediating effect of pedagogical content knowledge of science teaching on the relations among child care teachers’ burnout, science teaching anxiety, and science teaching efficacy. For this study, questionnaires were distributed to 355 teachers working at child care centers in Jollanam‐do. The analysis of data was conducted with SPSS WIN 18.0. The results of this study were as follows. First, child care teachers’ burnout lowered their science teaching efficacy, and child care teachers’ pedagogical content knowledge, as a mediating variable, reduced the negative effect of child care teachers’ burnout on their science teaching efficacy. Second, child care teachers’ science teaching anxiety lowered their science teaching efficacy, and child care teachers’ pedagogical content knowledge, as a mediating variable, reduced the negative effect of child care teachers’ science teaching anxiety as an independent variable on their science teaching efficacy. These findings imply there is a need to boost pedagogical content knowledge during in-service teacher education programs.

강화도 남부 여차리 조간대에서 관찰되는 생흔의 분포와 퇴적환경과의 연관성

백영숙,전승수,김종관 대한지질학회 2009 대한지질학회 학술대회 Vol.2009 No.

^13C-enriched Tunichrome Mm-2의 합성

백영숙 慶熙大學校 1992 論文集 Vol.21 No.-

^13C-enriched blood pigment of tunicate, Mm-2, was synthesized in which hydroxyl groups and amino group were protected with t-butyldimethylisilyl groups and t-butoxycarbonyl group, respectively. Vanillin-carbonyl-^13C was demethylated and the hydroxyl groups in the resulting 3,4-dihydroxybenzaldehyde-carbonyl-^13C were protected with t-butyldimethylsilyl chloride. Horner-Emmons Wittig reaction, in which bis-O-TBDMS-protocatechualdehyde-carbonyl-^13C was reacted with phosphonate in the presence of base, was employed to produce ^13C-enriched E-isomer as a major product. ^13C-enriched Z-isomer, the desired product, was obtained by photoisomerization of ^13C-enriched E-isomer using Rayonet RPR-3000 A˚fluorescent lamp.

급성폐혈증형 돼지단독예에서 분리한 Erysipelothrix rhusiopathiae의 혈청형 및 병원성

백영숙,김봉환,Baek, Young-sook,Kim, Bong-Hwan 대한수의학회 1991 大韓獸醫學會誌 Vol.31 No.1

The serotypes and pathogenicity of 47 isolates of Erysipelothrix rhusiopathiae from pigs with acute septicemic swine erysipelas were investigated. The serotypes were determiend by agar gel precipitation test using autoclave extracted antigens. All of the 47 isolates(42 strains from Youngnam and fi fotrains from Kyunggi province) were serotype lao Five field isolates of Erhusiopathiae serovar la were tested for pathogenicity in mice. All of 5 selected isolates were pathogenic for mice and $LD_{50}$ was $3.7{\times}10^3$ viable cells. Mice immunized subcutaneously with live vaccine did not die after challenge with virulent isolates of E rhusiopathiae.

제주도 주변 해역 표층퇴적물의 특성 분석 및 비교

백영숙,임동일 대한조선학회 2012 대한조선학회 학술대회자료집 Vol.2012 No.5

천마(Gastrodia elata Blume)의 항혈소판, 항혈전활성

백영숙,송재경,윤춘희,정교순,윤혜숙,Paik, Young-Sook,Song, Jae-Kyoung,Yoon, Chun-Hee,Chung, Kyo-Soon,YunChoi, Hye-Sook 한국생약학회 1995 생약학회지 Vol.26 No.4

MeOH extract of Gastrodia elata was fractionated to five solvent fractions, hexane fr (fr I), 90% MeOH fr (fr II), EtOAc fr (fr III), BuOH fr (fr IV) and $H_2O$ fr (fr V). Among the five fractions, fr II, III and IV showed platelet anti-aggregating effects against ADP or collagen induced rat platelet aggregation in vitro. Fr II , III and IV were also tested in vivo, in the mouse and rat models of thrombosis. Oral administration of fr II, III or IV enhanced the recovery from the thrombotic shock in the mouse model of thrombosis to 32-40% from 17% of recovery with the control group of mice. Treatment with fr II, III or IV also attenuated the sudden reduction in the blood platelet count following intravenous collagen injection to rat. The above results were indicative of the presence of anti-platelet and anti-thrombotic components in this plant.