제43차 춘계학술대회 : 포스타 연제 ; Maffuci`s Syndrome 유사한 혈관종 1예

박민아,이승철,전인기,김영표 대한피부과학회 1991 초록집 Vol.29 No.20

Poly(meta-phenylene isophthalamide)를 이용한 리름이차전지요 PE분리막의 고내열화 연구

박민아,배진영 한국고분자학회 2010 한국고분자학회 학술대회 연구논문 초록집 Vol.2010 No.10

인터넷 쇼핑몰에 대한 다차원 만족도 유형과 충성도 형성 패러다임에 관한 연구

박민아 숙명여자대학교 경제경영연구소 2004 經濟經營論集 Vol.34 No.1

[밀리컨 노벨 물리학상 수상 100주년] 로버트 밀리컨과 미국 과학의 부상

박민아 대우재단 2023 지식의 지평 Vol.- No.34

분광학의 새로운 시장: MIT 분광학 학술대회(1933-1942)와 응용분광학의 발전

박민아 한국과학사학회 2007 한국과학사학회지 Vol.29 No.1

The annual conferences at MIT on spectroscopy and its applications provided a market where consumers and producers of spectrum analysis of substances could meet and exchange their knowledge, skills, and products on spectrum analysis. In ten conferences between 1933 and 1942, George Russell Harrison, the first director of the MIT Spectroscopy Laboratory and the organizer of the conferences, emphasized the application of spectroscopy to diverse fields of sciences and to practical problems in industries. Accordingly, conferences attracted not only physicists and astronomers who traditionally made uses of spectroscopes as research tools, but also biologists, medical doctors and research workers in government agencies and industries who were rather new-comers in the field. The close examination of conferences will show that the conferences stimulated self-awareness of applied spectroscopy as a specialized field and applied spectroscopists as a group.Then, why did these conferences emphasize applications of spectroscopy? I will show three factors influenced on Harrison’s emphasis on application: declining interests in atomic spectroscopy in the early 1930s; the Great Depression society which blamed science for its economic difficulty and unemployment; the 1930s’ MIT where application and cross-disciplinary research were encouraged.

양극산화 이산화티탄 나노튜브 광전극

박민아,김진영 한국세라믹학회 2015 세라미스트 Vol.18 No.2

이산화티탄 나노튜브와 같이 방향성을 가지고 성장한 반도체는 염료감응 태양전지의 새로운 박막구조로서 많은 관심을 받고 있다. 감응형 태양전지의 전력 생산에 필요한 빛 흡수, 전하주입, 전하운반체수송 등이 박막에서 이루어진다는 점에서 박막은 태양전지의 광전효율을 결정하는 중요한 요소이다. 특히 이산화티탄 나노튜브가 가지는 물리적, 전기적, 광학적 특성을 조절함으로써 이산화티탄 나노입자를 이용한 태양전지의 광전효율을 빠르게 따라잡을 수 있었다. 본고에서는 이산화티탄 나노 튜브의 구조와 합성에 대해 검토하고 나노입자와 나노튜브 각각의 구조가 감응형 태양전지에서 빛의 수집과 전하 수집에 주는 영향에 대해 논의하고자 한다. 뿐만 아니라 나노튜브의 구조적, 전기적 특성에 따른 태양전지 제작과정의 차이를 알아본다.

Anti-Photoaging Effects of Angelica acutiloba Root Ethanol Extract in Human Dermal Fibroblasts

박민아,심미자,김영철 한국독성학회 2017 Toxicological Research Vol.33 No.2

The effects that ultraviolet rays elicit on collagen synthesis and degradation are the most common causes of wrinkle formation and photo-aging in skin. The objectives of this study were to evaluate the effects of Angelica acutiloba root ethanol extract (AAEE) to promote collagen synthesis and inhibit collagen degradation in human dermal fibroblasts. By examining total polyphenol and flavonoid contents, electron donating ability, radical scavenging activity, and superoxide dismutase-like activity, we found that AAEE exhibited fairly good antioxidant activity. Treatment with AAEE significantly increased type I procollagen production by cultured fibroblasts, as well as reduced ultraviolet-induced matrix metalloproteinase-1 (MMP-1) expression and MMP-2 activity in a dose-dependent manner (p < 0.05). In addition, AAEE significantly increased TIMP-1 mRNA expression (p < 0.05), although without an associated dose-dependent increase in TIMP-1 protein expression. In summary, we suggest that AAEE may be a potentially effective agent for the prevention or alleviation of skin-wrinkle formation induced by ultraviolet rays.

알칼리 전처리한 CNF의 기상 그라프트 소수화 연구

박민아,조병욱,최경화 한국공업화학회 2019 한국공업화학회 연구논문 초록집 Vol.2019 No.0

고농도 알칼리 처리 및 재생처리에 의해 천연 셀룰로오스(셀룰로오스 I)와 화학적 구조는 동일하지만 결정구조가 다른 셀룰로오스 II 가 제조된다. 셀룰로오스 II는 셀룰로오스 I과 다른 다양한 물리화학적 특성을 가지는데, 특히 천연 셀룰로오스에 비해 상대적으로 높은 화학적 개질성을 가지는 것으로 알려져 있다. 따라서 이들 셀룰로오스 II 기반의 나노셀룰로오스 또한 화학적 개질성이 우수할 것으로 기대된다. 한편 최근 들어 플라스틱의 대체물질로서 나노셀룰로오스를 적용하려는 시도가 다방면으로 이루어지고 있으나 이들의 높은 친수성은 이를 저해하는 인자로서 작용하고 있다. 따라서 이들의 활용범위를 넓히기 위한 나노셀룰로오스의 소수화 연구가 진행될 필요가 있다. 이에 본 연구에서는 결정구조가 다른 CNF들(cellulose nonofibrils)을 제조하고, 이들을 염화지방산을 이용하여 기상 그라프팅 처리한 후 결정구조가 기상 그라프팅 처리에 의한 소수화 효율에 미치는 영향을 비교분석하였다. ** 이 초록은 2015년도 정부(교육부)의 재원으로 한국연구재단의 지원을 받아 수행된 기초 연구사업임 (No. 2018R1D1A1A09084005).

WTO 보조금 협정상의 보조금과 농업협정상의 보조금의 상호관계 고찰

박민아 한국국제경제법학회 2006 국제경제법연구 Vol.4 No.-

In 2002, Brazil expressed its growing concerns about U.S. cotton subsidies by initiating a WTO dispute settlement case against certain features of the U.S. cotton program. Panel and AB concluded that various payments for upland cotton which were conferred by U.S were export subsidies and trade distorting domestic subsides so that they prejudice brazilian upland cotton producer by suppressing international price. Also, with regard to subsidies that are turned out prejudicing brazilian upland cotton farmers, panel stated article 7.8 of SCM Agreement, therefore U.S. was obilged to take steps to remove the adverse effects or withdraw the subsidy by June 30, 2005. AoA does not define subsidy whereas SCM Agreement provides definition of subsidy in a clear way thus panel and AB establish the significance of subsidy. This leads to diversity of opinion what is agriculture subsidy. Because there have been no study on relationship between AoA and SCM Agreement until now, this article initially aims to give an outline of upland cotton dispute and tries to find out implication for us by analyzing panel and AB's rulings. The panel and AB's rulings provide guideline for the way to interpret subsidy which have not defined in AoA and it is of importance dealing with a role of peace clause, the relationship between AoA and others in detail. It is the agricultural area that emerges different point of views in DDA negotiation. Thus it is anticipated that there will be many disputes among WTO members on agriculture subsidy regardless of which direction the negotiation will take. In this context, it is very appropriate and timely to understand background and fact about agriculture related disputes. Also we have to prepare correspondence logic for potential disputes by knowing and comprehending WTO's way to interpret AoA well.

청소년 간접흡연 예방 프로그램의 개발 및 효과

박민아,김미예,하영선 한국지역사회간호학회 2014 지역사회간호학회지 Vol.25 No.1

Purpose: This study has examined effectiveness of a secondhand smoking prevention program for adolescents. Methods: The study was done in a nonequivalent control group pretest/posttest design. The subjects of the currentstudy were 198 middle school students from K city in the Gyeongbuk province. The students were assigned toan experimental group (100) and participated in the secondhand smoking prevention program or to a control group(98) and did not take part. Data collection was done from June to July 2012. A Chi-square test, independent t-test,paired t test and ANCOVA were used with the SPSS 18.0 program for data analysis. Results: There were significantdifferences between the groups in knowledge of short-term influence of secondhand smoking (F=9.65, p<.005),knowledge of long-term influence of secondhand smoking (F=15.53, p<.001), verbal coping skills for secondhandsmoking prevention (F=16.35, p<.001), behavioral coping skills for secondhand smoking prevention (F=8.49,p<.005), and assertiveness of secondhand smoking prevention (F=17.30, p<.001) measurements. Conclusion:The secondhand smoking prevention program delivered to the adolescents is an effective method of encouragingsecondhand smoking prevention and can be utilized as an effective nursing intervention for adolescents.