지황(地黃)의 품질평가

정은아,김희정,심상범,김종우,김남재,Jung, Eun-Ah,Kim, Hee-Jung,Sim, Sang-Bum,Kim, Jong-Woo,Kim, Nam-Jae 한국생약학회 2000 생약학회지 Vol.31 No.2

The dried roots of Rehmannia glutinosa (RG) have been used in the traditional medicine for treatment of diabetes, fever and dysuria, etc. In order to investigate the quality evaluation of the dried roots of RG, we conducted the physico-chemical and biological evaluation method. The amount of catalpol from commercial samples is very diverse about $0.00{\sim}3.89%$ by using HPLC method, because it is easily decomposed by processing of RG. So, we should try to identify the correlation with the contents of catalpol and biological activities of RG. We chose 3 samples which were a wide difference of catalpol contents between each sample (Sample-I; 3.4%, Sample-II; 2.8%, Sample-III; 0.05%). Sample-I and Sample-II were found to be more effective than Sample-III on the DPPH free radical scavenging effect and inhibitory effect on $H_2O_2-catalyzed$ lipid peroxidation in rat liver in vitro. And, Sample-I and Sample-II exhibited more significant effects than Sample-III on accelerating actions of the small and large intestinal transport, and diuretic action in mice. So, it is suggested that the quantitative determination of catalpol should be required for the tandardization of the dried roots of RG.

한방약물로부터 항고지혈증 치료약물개발(I) -수종 한약재의 항고지혈증 활성검색-

정은아,김동현,이상인,김남재,Jung, Eun-Ah,Kim, Dong-Hyun,Lee, Sang-In,Kim, Nam-Jae 한국생약학회 1999 생약학회지 Vol.30 No.4

Twenty-four Oriental herbal medicines including Platycodi Radix and Scutellariae Radix, etc., which have been used for the cure of hyperlipidemia, coronary heart, disease were evaluated for the 3-hydroxy-3-methylglutaryl coenzyme A(HMG-CoA) reductase inhibition and antioxidant effect on a free radical, 1,1-diphenyl-2-picrylhydrazyl(DPPH) in vitro, and antihyperlipidemic effect on hyperlipidemic rats induced by Triton WR-1339 in vivo. 80% MeOH extract of eight herbs including Scutellariae Radix, Coptidis Rhizoma, Paeoniae Radix Rubra, Moutan Cortex Radicis, Angelicae Gigantis Radix, Bambusae Caulis in Taeniam, Cinnamomi Ramulus and Crataegi Fructus inhibited the HMG-CoA reductase activities and exhibited a radical-trapping action on a stable free radical, DPPH. On Triton WR-1339-induced hyperlipidemic rats, four herbs including Scutellariae Radix, Angelicae Gigantis Radix, Bambusae Caulis in Taeniam and Cinnamomi Ramulus showed respectively the significant suppression of serum total cholesterol, triglyceride, phospholipid and LDL-cholesterol levels and serum transaminase(ALT and AST) activities. From these results, it is suggested that each 80% MeOH extract of Scutellariae Radix, Angelicae Gigantis Radix, Bambusae Caulis in Taeniam and Cinnamomi Ramulus have effective antihyperlipidemic action against hyperlipidemia.

어머니의 진로관련 행동이 다문화 청소년의 학업중단 의도에 미치는 영향: 학업적응의 매개효과

정은아,이소자,Jung, Eun-a,Lee, So-Ja 대한산업경영학회 2021 산업융합연구 Vol.19 No.4

This study aims to verify the effect of mother's career-related behavior on the intention of multicultural youths to school dropout intention and the mediating effect of academic adaptation. To this end, 1,121 middle school seniors were sampled in the 7th (2017) data of the Multicultural Youth Panel Survey, and the influence relationship of the model presented as a three-step method of analysis of the mediated effects of Baron & Kenny and the Sobel test were conducted. First, the analysis showed that mother's support, a subfactor of mother's career-related behavior, had a negative effect on dropout intention, and that mother's interference had a positive effect. Second, academi adaptation has been shown to have a negative effect on dropout intention. Third, mother's support, a subfactor of mother's career-related behavior, showed a positive influence on academi adaptation, and mother's interference showed a negative effect. Fourth, academi adaptation has been shown to be mediated in the relationship between career-related behavior and dropout intention. Based on the above results, practical implications were presented. 본 연구는 어머니의 진로관련 행동이 다문화청소년의 학업중단 의도에 미치는 영향과 학업적응의 매개효과를 검증하고자 한다. 이를 위해 다문화청소년 패널조사 7차(2017) 자료에서 중학교 3학년 1,121명을 표본으로 선정하였고, Baron & Kenny의 매개효과 분석 3단계 방법으로 제시된 모형의 영향 관계와 학업적응의 매개효과 검증과 Sobel test를 실시하였다. 분석결과는 첫째, 어머니의 진로관련 행동의 하위요인인 어머니의 지지는 학업중단의도에 부(-)적인 영향, 어머니의 간섭은 정(+)적인 영향을 미치는 것으로 나타났다. 둘째, 학업적응은 학업중단의도에 부(-)적인 영향을 미치는 것으로 나타났다. 셋째, 어머니의 진로관련 행동의 하위요인인 어머니의 지지는 학업적응에 정(+)적인 영향, 어머니의 간섭은 부(-)적인 영향을 미치는 것으로 나타났다. 넷째, 학업적응은 진로관련 행동과 학업중단의도의 관계에서 매개하는 것으로 나타났다. 이상의 결과를 토대로 실천적 함의를 제시하였다.

한방약물로부터 항고지혈증 치료약물개발(3) -In vitro에서 가미과루해백황금탕 및 구성약물의 항고지혈증 활성-

정은아,김윤경,김동현,이상인,김남재,Jung, Eun-Ah,Kim, Yun-Kyung,Kim, Dong-Hyun,Lee, Sang-In,Kim, Nam-Jae 한국생약학회 2001 생약학회지 Vol.32 No.1

80% extract of Gamigwaruhaebaekbaekju-Tang (GGHBT), Gagamgwaruhaebaekbaekju-Tang (GGGHBT) and Gamigwaruhaebaekwhanggum-Tang (GGHWT) remarkably showed inhibitory effects on HMG-CoA reductase, lipid peroxidation of rat liver and LDL oxidation, and DPPH free radical scavenging effect in a dose-dependent manner. Especially, GGHWT which is formulated with Trichosanthis Fructus, Pinelliae Tuber, Aurantii Immatures Fructus, Magnoliae Cortex, Allii Macrostemi Bulbus, Cinnamomi Ramulus and Scutellariae Radix on the basis of Gwaruhaebaekbaekiu-Tang listed on the traditional medicinal references showed more effective hypocholesterolemic activities in vitro bioassay than the other prescriptions.

한방약물로부터 항고지혈증 치료약물개발(2) - 수종 한약재의 항고지혈증 효과 -

정은아,김동현,이상인,김남재,Jung, Eun-Ah,Kim, Dong-Hyun,Lee, Sang-In,Kim, Nam-Jae 한국생약학회 2000 생약학회지 Vol.31 No.2

In the previous reports, we selected 80% MeOH extract of 7 herbs including Scutellariae Radix(SR), Paeoniae Radix Rubra(PRR), Moutan Cortex(MC), Angelicae Gigantis Radix(AGR), Crataegi Fructus(CF), Bambusae Caulis in Taeniam(BCT) and Cinnamomi Ramulus(CR), which exhibited the inhibitory effect on HMG-CoA reductase and DPPH free radical scavenging effect in vitro, and antihyperlipidemic effects on antihyperlipidemic rats induced by Triton WR 1339 in vivo. Among them, SR, MC, AGR and BCT showed significant suppression of elevated serum LDL-cholesterol level, and AGR and CF showed significant liver weight increase on high cholesterol diet induced hyperlipidemic mice. And, SR, PRR, AGR, BCT and CR significantly suppressed the elevated serum total cholesterol and triglyceride levels on corn oil induced hyperlipidemic rats. Then, in order to research new antihyperlipidemic agents from the oriental medicinal herbs, we chose SR, AGR, CR and BCT which have the antihyperlipidemic effect in vitro and in vivo, and those herbs were systematically fractionated with organic solvent. EtOAc fraction of SR, hexane fraction of BCT, AGR and chloroform fraction of CR exhibited remarkably inhibitory effect on HMG-CoA reductase activity.

HY zeolite 촉매 상에서 Si/Al2 비가 2-Butanol 탈수반응에 미치는 영향

정은아 ( Eun A Jung ),최현희 ( Hyeon Hee Choi ),전종기 ( Jong Ki Jeon ) 한국화학공학회 2015 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.53 No.1

HY 제올라이트 촉매 상에서 2-부탄올의 탈수반응을 통한 부텐 제조에 관한 연구를 수행하였다. 고정층 촉매 반응기에서 2-부탄올 탈수 반응을 수행하였다. HY 제올라이트 촉매의 Si/Al2 비가 증가할 때 2-부탄올의 전환율이 증가하는 경향을 보였는데 이는 산점의 세기가 증가했기 때문으로 해석할 수 있다. 2-부탄올의 탈수반응에 의해 생성된 1-부텐, 트랜스-2-부텐 및 시스-2-부텐의 선택도는 Si/Al2 몰 비의 변화에 큰 영향을 받지 않았다. 따라서, 본 연구에서 사용한 HY 제올라이트 촉매 중에서 Si/Al2 몰 비가 60인 촉매가 2-부탄올의 탈수 반응에서 1-부텐의 수율을 최대화하는데 가장 유리한 것을 알 수 있었다. HY (60) 제올라이트 촉매의 경우, 1-부텐의 수율을 최대화하기 위한 최적 반응 온도는 250 oC 이었다. Synthesis of butenes through dehydration of 2-butanol was investigated over HY zeolite catalysts. 2-Butanol dehydration reaction was carried out in a fixed bed catalytic reactor. 2-Butanol conversion was increased with increase of Si/Al2 ratio of HY zeolite catalysts, which can be ascribed to increase of acid strength with increase of Si/Al2 ratio. Selectivities to 1-butene, trans-2-butene, and cis-2-butene were not greatly influenced by the change of the Si/Al2 ratio of HY zeolite. As a result, it was advantageous to use a HY zeolite catalyst with 60 Si/Al2 ratio for maximizing the yield of 1-butene in the dehydration of 2-butanol. The optimal reaction temperature for maximizing the yield of 1-butene was 250 oC over HY (60) catalyst.

사회서비스 제공에서 비영리 교육기관의 역할과 정책과제

정은아(Jung Eun A),김은정(Kim Eun jeong) 경성대학교 사회과학연구소 2010 社會科學硏究 Vol.26 No.2

본 연구는 최근 사회서비스 전달주체가 다원화되면서 사회서비스 제공에서 중요한 역할을 담당하고 있는 비영리 고등교육기관에 대한 정책적 분석을 시도하였다. 이를 위해 사회서비스 전달주체의 현황과 특성을 민간비영리기관과 교육기관을 중심으로 검토하고, 대부분 비영리 고등교육기관으로 구성된 ‘지역사회서비스 청년사업단을 중심으로 이들이 제공하는 사회서비스의 급여대상, 전달주체, 급여의 형태, 재원 등을 분석하였다. 이를 바탕으로 사회서비스 제공영역에서 비영리교육기관의 역할과 정책과제를 제시하면 다음과 같다. 첫째, 급여대상자 확대를 통해 보편적 사회서비스 제공 기반을 확보함에 있어서 비영리교육기관이 역할을 담당할 필요가 있다. 둘째, 사회적 연대를 강화하고 공공성을 확대시킬 수 있는 바람직한 사회서비스를 발굴하고 이를 확대시키는데 있어서 비영리 고등교육기관이 역할을 담당해야만 한다. 또한 이러한 서비스가 이용자 선별이나 비용부담의 역진성 문제없이 제공될 수 있도록 전달방식을 개선함에 있어서도 비영리 고등교육기관의 역할이 기대된다. 셋째, 사회적 기업과 같은 바람직한 사회서비스 산업을 육성함에 있어서도 비영리 고등교육기관이 중요한 역할을 해야 한다. 본고에서의 분석이 사회서비스 영역에서 비영리 고등교육기관의 바람직한 역할정립을 위한 정책논의의 기초자료가 될 수 있기를 기대한다. This study tries to analyze the roles and tasks of educational organizations in providing social services. Educational organizations are currently noted in terms of their roles in providing social services and training diverse professions in social service domains. First of all, this study reviews the notions and major characteristics of social services and the current features of non-profit organizations and educational organizations as their major roles in social service delivery. Then, this study introduces the "Youth-Groups for Social Services" which have started service delivery since 2009. Based on Gilbert & Terrell's policy analysis framework, this study investigates the entitlements, the ways of delivery, service contents, and finances of "Youth-Groups for Social Services." The proper roles of educational organizations which this study proposes are as follows. First, educational organizations should contribute to widen the range of social service beneficiaries by establishing the policy framework of social service. With the aim of directing to universalism (not to selectionism) in terms of social service entitlement, educational organizations should actively find out the ways to increase the numbers of social service beneficiaries and enhance the quality of social services. Second, educational organizations also tries to discover the proper contents of social services increasing cohesions of social groups and social justice. In addition, educational organizations should endeavor to find out the ways to deliver social services effectively and efficiently. Third, educational organizations also can carry off bringing up social enterprises delivering social services.

2007 개정 및 2009 개정 중등 과학 및 고등학교 화학 교과서의 MBL 실험 분석

정은아 ( Eun-a Jung ),차정호 ( Jeongho Cha ),김인환 ( Inwhan Kim ) 경북대학교 과학교육연구소 2016 科學敎育硏究誌 Vol.40 No.3

이 연구에서는 2007 개정 및 2009 개정 중등과학 교과서 및 화학 교과서를 중심으로 교과서에 수록된 MBL(microcomputer-based laboratory) 실험을 교육과정 시기, 대상 학년, 실험이 제시된 맥락, 내용 영역, 주제, 사용된 센서, 그리고 출판사 등의 측면에서 분류하고 그 특징을 분석하였다. 분석 결과, MBL 실험은 2007 개정 교육과정기의 경우에는 중학교 과학교과서에서만 25번 제시되었고, 2009 개정 교육과정기의 경우에는 과학 및 화학 I, II 교과서를 통틀어 29회(중학교 19회, 고등학교 10회) 제시되었다. 전체적으로는 교육과정 개정 이후 중학교 과학 교과서에 MBL 실험은 증가하지 않은 반면, 고등학교 교과서에는 처음으로 제시되었다. MBL 실험은 중학교 1학년에 가장 많이 제시되었고, 선택탐구보다는 필수탐구에 주로 포함되었다. 센서 중에서는 운동 센서와 온도 센서가 가장 많이 사용되었고, 그 다음으로는 산소와 이산화탄소 센서가 많이 사용되었다. 출판사별 분석에서는 전체적으로는 사용 빈도가 감소하였고, 일부 출판사의 교과서에서는 MBL 실험이 단 한번도 사용되지 않았다. 이 결과들을 바탕으로 교육적 함의를 논의하였다. In this study, MBL experiments in the Korean secondary science textbooks and chemistry textbooks under the 2007 and the 2009 curriculum revision were analyzed in terms of curriculum revision era, grade, context of experiment in the textbook, field of science, topic, sensor, and publisher. As a result, 25 MBL experiments were found in the science textbooks under the 2007 revision, and 29 experiments under the 2009 revision (19 for middle school textbook and 10 for high school textbook). MBL experiments in middle school textbooks were not increased after curriculum revision while those in high school textbooks appeared for the first time. Most of them were in the textbooks for grade 7 and presented as an essential experiment rather than optional one. Motion sensor and temperature sensor were used most frequently, and oxygen sensor and carbon dioxide sensor were followed. In aspect of publishers, a frequency of MBL experiment was decreased in most textbook and some publishers didn`t include MBL experiment at all. Based on these results, educational implications were discussed.

백석의 「고야(古夜)」에 나타난 불안감 해결 양상

정은아 ( Jung Eun-a ) 한국문학치료학회 2007 문학치료연구 Vol.7 No.-

Many people say that most poems written by Baek-Suk including 「Go-ya(古夜:old night)」are not organized for the main idea. But this Article debates that「Go-ya(古夜:old night)」organically shows reduction of the fear. In the first and second paragraph, the story that the persona heard confused with illusion brings about the fear. And the third and fourth paragraph include memory of reducing the fear(darkness, aloneness). Then in the fifth and sixth paragraph, stable future from the fear is insured to narrator. So to speak, when Baek-suk wrote the poem, he wants to reduce the suffer by settling his fear in the memory of childhood. In addition, readers who appreciate this poem would be helped reconstruction of their own the epic of self.

간장첨가량을 달리하여 제조한 저염 새송이 버섯장아찌의 품질 및 관능특성

정은아(Eun A Jung),최수근(Soo Keun Choi),남궁영(Young Nam Kung) 한국조리학회 2011 한국조리학회지 Vol.17 No.5

The purpose of this study is to investigate the quality and sensory characteristics of Jiangachi produced with king mushrooms, the moisture content of Jiangachi made from king mushrooms was 72.80% for CON, which was highest, while J4 was 64.46%, which was lowest. In color value results, CON showed the highest L value of 72.80 and J4 showed the lowest value of 31.71. However, the amount of A and b value showed the reverse results. CON showed the lowest sugar content and salinity, whereas J4 showed the highest among the two of them, For PH result, CON and J1 showed the lowest value while J4 showed the highest value of 3.87, According to the results of QDA, J4 showed the strongest brown color intensity, soy sauce flavor, salty taste, and CON showed the weakest of them, CON showed the strongest sweet flavor and sweet taste, whereas J4 showed the weakest, According to the result of acceptance test, CON showed the lowest scent, and for appearance, taste, texture, and overall quality, J3 that contains 25% of soy sauce showed the best results, In conclusion, Jiangachi made with king mushrooms got a high preference when added with soy sauce, and the preference has increased with 25% of soy sauce.