신인상 아동문학 부문 수상소감

이아름 심미안 2023 문학들 Vol.- No.72

GC-MSD를 이용한 유통 한약재의 잔류농약 모니터링

이아름,김태희,장설,이아영,최고야,김호경 한약정보연구회 2014 한약정보연구회지 Vol.2 No.1

This study was carried out to investigate the pesticide residues in commercial medicinal herbs in Korea in 2013. Among a total of 105 samples of 10 different kinds of herbs, 65 samples (10 Kinds) were domestic, and 40 samples (9 Kinds) were imported. To establish pesticide residues (Aldrin, BHC isomer, DDD, DDE, DDT, Dieldrin, Endrin) in commercial herbal medicines, chromatographic equipment was used with the gas chromatography-mass detector for qualitative analysis. The residual pesticides were not founded in both imported and domestic samples.

상허사상 구현을 통한 이상적인 정보화 사회상 구축

이아름,이지영,정혜진 건국대학교 2000 常虛思想 Vol.11 No.-

솔방울 메탄올 추출물의 항산화 및 멜라닌 생성 억제 효과

이아름,노성수,이은숙,민유홍 한국피부과학연구원 2016 아시안뷰티화장품학술지 Vol.14 No.3

Purpose: This study was conducted to evaluate anti-oxidant and anti-melanogenic activities of pine cone extract from Pinus densiflora. Methods: Pine cone extract used in this experiment was extracted with methanol at room temperature for 24 h. Anti-oxidant activities were measured by 2,2-Diphenyl-1-picrylhydrazyl (DPPH) radical scavenging assay and nitro blue tetrazolium chloride (NBT) assay. Moreover, the inhibitory effects of pine cone methanol extract on tyrosinase and melanin synthesis in murine B16-F10 melanoma cells were studied. In addition, cell viability was investigated by MTT assay. Results: The results showed that the pine cone methanol extract strongly reduced the DPPH free radical activity (IC50=9.57±1.24 μg/mL). However, its activity was lower than the activity of L-ascorbic acid (positive control, IC50=1.28±0.03 μg/mL). In NBT assay, the pine cone methanol extract exhibited more superoxide anion radical scavenging activity (IC50=3.33±0.28 μg/mL), compared with L-ascorbic acid (IC50=73.25±1.02 μg/mL). When treated with 3,4-Dihydroxy-L-phenylalanine (L-DOPA) as the substrate of tyrosinase, the extract inhibited the tyrosinase activity with an IC50 value of 106.15±1.69 μg/mL, lower effect than that of kojic acid (IC50=3.12±0.68 μg/mL). In murine B16-F10 cells, the pine cone methanol extract significantly suppressed melanogenesis in a concentration-dependent manner without cytotoxicity. Conclusion: The results indicated that pine cone extract could be potentially valuable as a new potent depigmentation agent. 목적: 본 논문의 목적은 솔방울 메탄올 추출물의 항산화 효과 및 항멜라닌 활성을 평가하는 것이다. 방법: 솔방울 메탄올추출물의 항산화 활성을 알아보기 위하여 2,2-Diphenyl-1-picrylhydrazyl (DPPH) 및 슈퍼옥사이드 음이온 라디칼 소거능(superoxide anion radical scavenging activity)을 측정하였을 뿐 아니라, 미백효능을 평가하기 위하여 티로시나아제에3,4-Dihydroxy-L-phenylalanine (L-DOPA)를 가하여 티로시나아제 활성 저해효능을 측정하였다. 또한 멜라닌 생합성 억제효과는 α-MSH를 가한 B16-F10 세포를 활용하여 확인하였고, Thiazolyl blue tetrazolium bromide (MTT)를 활용하여세포독성을 측정하였다. 결과: 솔방울 메탄올 추출물은 높은 항산화 활성을 가지고 있고, 농도의존적으로 티로시나아제를 억제하였을 뿐 아니라, B16-F10 세포에서 농도의존적으로 멜라닌 형성을 저해하였다. B16-F10 및 CCD-1064SK 세포에서 솔방울 메탄올 추출물은 세포독성을 나타내지 않았다. 결론: 솔방울 메탄올 추출물은 세포독성을 나타내지 않으며 멜라닌 형성을 저해하고 항산화 효과 또한 뛰어나므로 미백 및 항산화 소재로 충분히 활용될 수 있다고 사료된다.

자연친화적 식생활교육 프로그램에 나타난 유아들의 경험 및 변화탐색

이아름,김현지 한국유아교육학회 2016 정기학술대회 논문집 Vol.2016 No.-

본 연구는 유아의 식생활에 대한 문제점을 인식하고, 유아 스스로 건강한 식습관을 형성할 수 있는 능력을 키우며 실천적 식습관 형성을 지원하기 위한 자연친화적 식생활교육 프로그램을 구성하고 이를 적용함으로써 유아들의 변화과정 속에 나타나는 유아들의 경험을 파악하고 유아경험의 의미가 무엇인지를 알아보는데 목적이 있다. 이를 위해 선행연구 및 자료들의 문헌고찰을 토대로 유아를 위한 자연친화적 식생활교육 프로그램을 구성하였으며, 구성된 프로그램을 적용하여 유아들에게 일어나는 다양한 식생활 경험들을 질적으로 분석하였다. 본 연구에서 구성된 유아를 위한 자연친화적 식생활교육 프로그램은 유아들이 일상생활에서 식생활문제점을 스스로 인식하고 올바른 식생활을 실천하는 방향으로 전환할 수 있도록 지원하였으며 이를 통해 유아들은 여러 가지 음식을 골고루 먹는 태도를 지니고 자연과 함께 튼튼하게 운동하는 등 건강하게 생활하는 모습을 보였고 자연에서 느끼는 두려움을 점차 탈피하고 친환경 농산물 가꾸는 것에 흥미를 보였으며 에너지 자원 절약하기, 자연을 사랑으로 돌보기 등 환경을 존중하는 태도를 보이게 되었다. 또한 개인, 사회, 자연에 대해 배려하는 모습을 지니는 모습으로 차츰 변화해 나가는 것을 확인할 수 있었다. 따라서 유아 스스로 건강한 식습관을 형성하기 위해서는 교사는 지원자이자 안내자로서 역할이 중요하며 자연친화적인 교육활동 모색과 유아를 위한 자연친화적 식생활교육프로그램을 유아교육기관에서 교육방법의 하나로 자리 잡을 수 있도록 지원하는 노력이 필요할 것이다.

기립자세동안 전정기관에 인가된 정현파 전류자극에 대한 자세균형 응답

이아름,유미,김진호,김동욱,김정자,Lee, Ah-Reum,Yu, Mi,Kim, Jin-Ho,Kim, Dong-Wook,Kim, Jung-Ja 대한의용생체공학회 2010 의공학회지 Vol.31 No.3

This study is vestibular electric stimulation applied between the mastoids during quiet standing elicits postural sway. The aim of this study was to characterize the postural sway response to continuous sinusoidal vestibular electric stimulation across various stimulus frequencies and amplitudes. Binaural bipolar sinusoidal vestibular electric stimulation was applied to the skin overlying the mastoid processes of 10 subjects while they stood on a force plate. The position of the center of pressure(COP) and signals at the feet are obtained on an force plate, while the head and whole body center of mass(COM) was measured with motion analysis system. The stimulus conditions included eight frequencies (1/64, 1/32, 1/16, 1/8, 1/4, 1/2, 1, and 2Hz) and six peak amplitudes (0.1, 0.25, 0.5, 0.7, 1 and 2mA). Each subject experienced one trial at each amplitude-frequency pair. The stimuli elicited sway in lateral plane in all subjects, as evidenced by changes in the stimulus frequency. Our results demonstrate that the vestibular system is sensitive to vestibular electric stimulation intensity changes and responds by altering the magnitude of the response accordingly.

Test-takers’ Performance and Perceptions in Total-Immersive Virtual Reality Paired Speaking Tests

이아름 한국멀티미디어언어교육학회 2023 멀티미디어 언어교육 Vol.26 No.3

This study investigated university students’ performance and perceptions of taking paired English speaking tests in fully immersive virtual reality. A total of 36 college students at an advanced level were recruited to participate in either face-to-face (N = 20) or fully immersive VR speaking tests (N = 16), designed to explore test-takers’ speaking abilities. The students were asked to perform two decision-making tasks and fill out a questionnaire asking about their preference for the test mode and perceived levels of presence after completing the tasks. The study revealed no statistically significant difference in the students’ speaking abilities between the two testing modes, suggesting that the VR paired speaking test format could potentially serve as an alternative to the face-to-face paired speaking test. In relation to the analysis of questionnaire items, the students demonstrated a high level of immersion in the virtual environments. Despite their preference for the face-to-face testing mode, they reported that the VR test could potentially replace the face-to-face speaking test. The semi-structured interview data gathered from three participants further revealed that the students, however, reported some discomfort with the paired speaking test itself due to pairing up with the other person. Furthermore, this study presents the limitations of the study and suggests implications for speaking assessments and future studies.

[신인상 아동문학 부문 수상작] 24시 목욕탕의 비밀

이아름 심미안 2023 문학들 Vol.- No.72

The Effects of Nearpod-Incorporated English Classes on Korean University Students’ Speaking Performance and Affective Aspects

이아름 한국외국어교육학회 2022 Foreign languages education Vol.29 No.4

Nearpod, an online teaching cloud-based platform, offers great potential to generate pedagogical tasks and yield better results in teaching communication skills. This study thus examined the effects of Nearpod-based English-speaking classes. To this end, one-on-one speaking tests were conducted twice in a semester, and a questionnaire was administered to assess university students’ perceptions of the usefulness of Nearpod in offline classroom. The participants comprised 39 university students who took a mandatory English class titled Communication in English. The paired samples t-test results indicated that the students’ overall speaking performance has improved over time. Specifically, compared to the high-level students, the low-level students showed a significant increase in speaking performance. The questionnaire analysis demonstrated that most students were satisfied with Nearpod-based English speaking classes because of enhanced interest, active participation in class, and increased interaction with class content and peers. The pedagogical implications are suggested and the limitations of the study are further discussed.

페놀 화학사고 오염퇴적토에서 현장특이적 요인이 원위치 피복 성능에 미치는 영향

이아름,최용주 한국환경준설학회 2022 한국환경준설학회 학술대회논문집 Vol.2022 No.5