달맞이꽃 뿌리의 성분에 관한 연구

최윤수,석경순,이경선,전숙경 대구효성가톨릭대학교 1992 연구논문집 Vol.45 No.1

Oenothera odorata Jacquin(Onagraceae), native to south America, is naturalized and grows wild in Korea. The seed oil, named evening primerose oil, of this plants is used for prophylacsis of adult disease. From the roots of this plant, β-sitosterol, β-sitosterol-3-O-D-glucopyranoside and asiatic acid were isolated. The structures were elucidated by spectrometric methods and chemical transformation.

어린이집에서의 보육실습 내용 연구

최경애,오애순 덕성여자대학교 학생생활연구소 1999 學生生活硏究 Vol.15 No.-

보육실습 현황 및 내용을 알아보기 위하여 본 대학 부설 평생교육원의 보육교사양성과 정학생을 대상으로 보육실습 후 실습형태, 실습활동 및 내용, 지도교사의 지도현황, 실습 만족도 등에 대해 설문 조사하였다. 연구결과는 다음과 같았다. 첫째, 실습 교사는 일일평균 9.81시간(토요일 5.93시간)을 어린이집에서 실습하였으며 이중 82.71%를 학급내에서 보내는 것으로 나타났으며, 4주간 한 학급에서 실습하지 않고 로테이션하는 경우도 32.1%나 되었다. 둘째, 실습 교육활동은 자유선택활동(평균3.27회)에 비해 집단활동(평균6.33회)이 많이 이루어졌으며 실습생별 개인차가 크게 나타났다. 이외에도 교구제작, 급간식 준비, 청소 등을 많이 하는 것으로 나타났다. 셋째, 실습생들은 지도교사 중 일부는 실습 교사의 활동실행이나 평가를 제대로 하지 않고 방치한다고 응답하였으나, 실습만족도는 대체로 높게 나타났다. 이러한 연구결과가 시사하는 바를 몇가지로 나누어 논의하였다. This study was conducted to investigate student teachers' practicum contents and practices in child care centers. A questionnaire was administered to 81 student teachers after practicum in order to gain information about practicum contents, attitudes of supervising teachers, and practicum satisfactions. The findings of this study were as follows : First, student teachers took practicum average 9.81 hours a day during their practicum, and they were in classroom for 82.7 percent of the average hours. Student teachers who took practicum in only one classroom for four weeks were 67.9 percent of total student teachers, others were rotated from a classroom to another. Second, student teachers had average 3.27 free play activities and average 6.33 group activities. That is, group activities were twice times more than free play activities. There were in order of art, language, and mathematics/science/exploration activities in free play time, and literature, music and movement, group talk/discussion, art, game in group time Third, student teachers assisted children In snack, lunch, washing, blushing teeth and toileting in almost every day. Besides student teachers not only prepared for snack and lunch for and cleaned the classrooms but also did inappropriate task. Nevertheless the practicum satisfactions of student teachers were high. The results from the present study implied a need for the practicum programs were imperative. Also, student teachers, cooperating teachers, college supervisors, and directors should consider the reconception of practicum programs.

Microabrasive로 처리한 상아질표면에 대한 복합레진의 결합강도에 관한 연구

최경규,민병순 大韓齒科保存學會 1997 Restorative Dentistry & Endodontics Vol.22 No.1

치과용 가시광선중합형 복합레진의 잔류단량체 정량분석에 관한 연구

최경규,민병순 大韓齒科保存學會 1992 Restorative Dentistry & Endodontics Vol.17 No.1

The purpose of this study was to estimate the contents of the resicual monoers, such as Bis-GMA and TEGDMA. In this study, materials used were six kinds of anterior and posterior visible lightpcured resins. Resins were placed in disk- shaped Teflon mold (8.5mm in diameter, 2.0mm in thickness), and cured for 20 seconds with visible light soruce attached wide diameter lightguide. The specimens were immersed in 10ml ethanol and stored for 5 days at 37℃. The concentration of residual monomers in eluate solution was analysed by HPLC, and the following results are obtained. 1. The residual Bis-GMA and TEGDMA were detected in all materials used, and the ranges of quantly of the residual Bis-GMA was 0.101-1.346 wt% and that of TEGDMA was 0.230-5.794wt%. 2. The contents of residual TEGDMA was detected higher than that of residualBis-GMA(P<0.01). 3. The content of residual monomers was detected to be highest in Bis-Fil M as microfilled type. 4. In most of the materials used, there was no significant difference in the contents of residual monomers between anterior and posterior light-cured resins.

發達段階에 따른 記憶情報의 組織化過程에 關한 硏究(Ⅰ) : 槪念的 節疇가 組織化에 미치는 영향 The Effects of Conceptual Categories on Organization

崔以順,崔敬淑 연세대학교 대학원 1977 延世論叢 Vol.14 No.1

This experiment examined the effects of conceptual categories on organization in memory development. The subjects were kindergarteners and first through sixth grade elementary school children. The stimulus cards in each trial consisted of sixteen picture cards of which twelve cards could be categorized in terms of three categories and the rest of the cards could not be categorized in any familiar way. These cards were shown to each subject for three minutes and then the subject was asked to say what he or she saw in free recall. It was found that the amount of recall and the amount of organization in recall increased. Among the significant differences was the difference in organization between kindergarteners and third, fourth, fifth and sixth graders. This result was interpreted to mean that organization in memory isbased on the ability of hierarchical classification which appears with the onset of concrete operational period according to Piaget.

1,5-Diphenylhydantoins을 위한 새로운 Methyl α-Anilinophenylacetate 유도체의 합성

권순경,최희전,박명숙 德成女子大學校 藥學硏究所 2001 藥學論文誌 Vol.12 No.1

For the development of new COX-2 inhibitor, novel key intermediates (2∼4) synthesized through esterification, bromination and α-substitution from phenylacetic acid. The methyl phenylacetate 2 was synthesized through reflux phenylacetic acid with sulfuric and methanol. The methyl α-bromophenylacetate 3 was produced through radical bromination using N-bromosuccinimide from 2. The optical amination to introduce anilino group was contolled under 80℃ in DME. The bromo intermediate was converted to the final methyl α-anilinophenylacetate 4 through reaction with aniline.

아동학대와 아동기 비행간의 관계

남순현,최희경 호남대학교 2005 호남대학교 학술논문집 Vol.26 No.1

This study examined the relationship between child's physical abuse and child's delinquency. For the purpose of present study, the sample consisted of 229 5th and 6th grade grils. The result of the paper was as follows. First, child's delinquency consisted of four types - that is, curiosity of a day, avoidance behavior, disturbance of social(public) order, and peer group violence - which was based upon Kwak and Mun(1993)'s juvenile delinquency. Second, child's physical abuse was significantly positive correlated curiosity of a day, distrurbance of social(public) order, and peer group violence except for avoidance behavior. Third,the result showed that age, the number of sibling, birth order, sibling conflict, GPA and perception of one's countenance were related with child's physical abuse and child's behavior problem.

보육실습교사가 경험한 실습유형에 따른 보육실습실태

유연화,최경애,오애순 한국영유아보육학회 2004 한국영유아보육학 Vol.0 No.37

The purpose of this study is to analyze the practice areas and contents of student teaching program in child care centers, in which student teachers investigated the sort of practice activities according to have their experience during their practice period. This study was surveyed 324 under-graduate students who finished in child care center located in Seoul and Kyunggido. 349 questionsheets had distributed, and 324 respondents had answered it, that were analyzed with T-test, ANOVA, χ². The finding of this study were as follows: First, student teachers took practice average 9 hours and 58 minutes for a day, and they worked classroom for 80% of the practice time. Practicing Student teachers of 66.7% carried only in one classroom and others were rotated from a classroom to another. Second, student teachers had average 7.72% free play activities and 9.47% group activities. Private child care centers took more free play activities(arts, books, music area) and group activities(literature, music activities) than public. Third, almost student teachers assisted to children in snack and lunch every day or 3-4 times in routine practice. Forth, It was presented that student teachers were not coached by their instructor about charge of business practice. Fifth, It showed that student teachers used to participate classroomcleaning and teaching materials-arrangement from "participation degree of miscellaneous task" almost in everyday.

Hydantoin환의 가수분해반응 및 O-알킬화반응을 이용한 새로운 A1ky1 α-Anilinophenylacetate 유도체의 합성

박명숙,최희전,박해선,권순경 德成女子大學校 藥學硏究所 2002 藥學論文誌 Vol.13 No.1

For the development of new synthetic method for unnatural amino acid esters, alkyl α-anilinophenylacetates 4a-i were synthesized through base-catalyzed hydrolysis of 1,5-diphenylhydantoins 1a-b in methanol and O-alkylation of sodium α-anilinophenylacetate 3 with alkyl halides in DMF. Even though hydrolysis of hydantoin ring was undertaken under about 30-40℃ in methanol, the hydantoic acid sodium salt 2 was continuously converted to the sodium α-anilinophenylacetate 3. All synthetic process from hydantoin to alkyl α-anilinopheny lacetates could be carried out in one-pot without isolation of intermediates.

정상인에서 도플러 초음파술을 이용하여 측정한 니트로글리세린 투여후 두개내 혈류속도의 변화

박일(Il Park),장경식(Kyoung Sig Chang),안기완(Gi Wan An),최연수(Yeon Soo Choi),국기용(Ki Yong Kook),홍순표(Soon Pyo Hong) 대한내과학회 1995 대한내과학회지 Vol.48 No.4

N/A Objectives: With advances in transcranial ultrasound technology, transcranial color-code Doppler ultrasonography provides the anatomical location of basal transcranial vessel and their blood flow. To study of changes of cerebral blood flow, we measured continuously the blood flow velocity of middle cerebral artery by transcranial Doppler(2.5MHz) before and after sublingual administration of 0.6mg. nitroglycerin in twenty healthy young persons. Methods: Pulse rate and systolic and diastolic blood pressure and velocity of percussion(P), tidal (T) and dicrotic(Dc) wave, and diastole(Ds), velocity time integral(VTI), mean velocity(V), pulsatility index(PI) were measured. Results: Heart rate was increased, and systolic blood pressure was decreased significantly two minutes after administration of nitroglycerin. Diameter of outer margin of color Doppler spectrum was increased, and P, T, Ds, VTI and V were decreased significantly after two minutes. PI was increased significantly after two minutes, but returned to baseline level soon. Conclusion: We concluded that dilatation and decreased blood flow velocity of middle cerebral artery were resulted by nitroglycerin.