염분 스트레스가 고들빼기의 항산화 및 항염증 활성에 미치는 영향

백하영,송영근,김경준,김형주,이경철,채철주,구현정,Ha Young Baek,Yeong Geun Song,Kyungjun Kim,Hyungjoo Kim,Kyeong Cheol Lee,Cheol-Joo Chae,Hyun Jung Koo 국립한국농수산대학교 교육개발센터 2024 현장농업연구지 = Journal of practical agricultural resear Vol.26 No.2

본 연구는 염분 스트레스가 고들빼기(Crepidiastrum sonchifolium)의 항산화 및 항염증 활성에 미치는 영향을 확인하기 위해 NaCl를 농도별로 0, 50, 100, 200 mM 6주간 처리한 후, 식물체 전체를 채취하여 70% 에탄올 추출물을 제조하였다. NaCl 처리 농도 0, 100, 50 mM 순으로 DPPH 라디칼 소거율이 높게 나타났으며, 200mM 처리군에서는 가장 낮은 라디칼 소거율을 보였다. 총 페놀 및 총 플라보노이드 함량 또한 NaCl 농도에 따라 항산화 활성과 매우 유사한 결과를 나타냈으며, 식물의 페놀 화합물이 염분 스트레스에 대한 항산화 능력에 기여할 수 있음을 확인하였다. 또한, NaCl 처리 고들빼기 추출물이 LPS로 자극한 마우스 대식세포주(Raw 264.7)에서 NO 생성 억제에 미치는 영향을 비교한 결과, NaCl 농도별 모든 그룹의 1,000㎍/mL 처리군에서 LPS에 의해 유도된 NO 생성량이 유의적으로 감소하였으나, NaCl 100mM 및 200mM 처리군의 고농도(1,000㎍/mL) 처리는 세포생존에 부정적인 영향을 주는 것으로 확인되었다. 이러한 결과는 건강한 상태의 식물체에서 라디칼 소거능이 가장 우수하며, 100mM NaCl 처리농도까지 염분 스트레스에 대응하기 위한 항산화 물질을 생산하지만, 200mM의 높은 NaCl 농도는 오히려 식물체 생리활성에 부정적인 영향을 주는 것으로 판단된다. 고들빼기의 경우 100mM 이하의 NaCl 처리는 항산화 활성에 영향을 줄 수 있으며, 이전에 보고된 생장 지표의 결과와 비교하였을 때, 50mM 이하의 NaCl 처리 환경에서 식물의 생장 및 생리활성에 긍정적인 영향을 줄 수 있을 것으로 사료된다. This study was conducted to investigate the effect of salinity stress on the antioxidant and anti-inflammatory activities of Crepidiastrum sonchifolium. The plant was treated with NaCl at concentrations of 0, 50, 100, and 200mM for 6 weeks. After treatment, the whole plant was collected, and 70% ethanol extracts were prepared. The DPPH radical scavenging activity was highest in the order of NaCl treatment concentrations of 0, 100, and 50mM, while the 200mM treatment group showed the lowest radical scavenging. The total phenol and total flavonoid contents showed very similar results to the antioxidant activity depending on the NaCl concentration, confirming that the phenolic compounds of the plant can contribute to the antioxidant capacity against salinity stress. In addition, the investigation of the effect of NaCl-treated C. sonchifolium extract on the inhibition of NO production in the LPS-stimulated mouse macrophage cell line (Raw 264.7) revealed that NO production significantly decreased in the 1,000㎍/mL treatment group across all NaCl concentration groups. But, the high concentration (1,000㎍/mL) treatment of the 100mM and 200mM NaCl treatment groups was found to have a negative effect on cell survival. These results suggest that radical scavenging activity is highest in healthy plants and that they produce antioxidants to respond to NaCl salinity stress up to 100mM. However, a high NaCl concentration of 200mM has a negative effect on the physiological activity of the plants. Compared with the results of the previously reported growth index, it is thought that the growth and physiological activity of plants can be positively affected in an NaCl treatment environment of 50mM or less.

구조 강도를 이용한 볼트 체결된 평판에 부착된 댐핑 물질의 위상 최적화

백하영(Hayoung Baek),Nerse Can,김현국(Hyunguk Kim),왕세명(Semyung Wang) 한국소음진동공학회 2018 한국소음진동공학회 학술대회논문집 Vol.2018 No.10

인공지능 스피커 활용 스캐폴딩 전략 기반의 의사소통 중재가발달장애 학생의 화용능력에 미치는 효과

백하영(Hayoung Baek),최상배(Sangbae Choi) 한국청각·언어장애교육학회 2024 한국청각·언어장애교육연구 Vol.15 No.1

이 연구에서는 인공지능 시대의 교육 현장 변화와 인공지능 스피커가 가지는 교육적 활용의 가능성을 인식하고, 이를 교육 매개로 활용하는 교사의 역할이 중요하다고 판단하여, 발달장애 학생을 대상으로 인공지능 스피커를 활용한 스캐폴딩 전략 기반의 의사소통 중재가 화용능력에 미치는 영향을 알아보고자 하였다. 이를 위해 발달장애 학생들에게 인공지능 스피커를 활용한 스캐폴딩 전략 기반 의사소통 중재 후, 중재 효과를 확인하였다. 연구 결과, 인공지능 스피커를 활용한 스캐폴딩 전략 기반의 의사소통 중재가 발달장애 학생의 전반적인 화용능력, 의사소통 조율 인식 능력, 이야기 담화 정보 인식 능력, 상위언어 인식 능력 모두에서 유의한 중재효과가 있었다. 이 연구 결과는 인공지능을 활용한 의사소통 중재 전략이 발달장애 학생의 언어발달에 효과적이며 인공지능을 특수교육 상황에서 다양하게 활용할 필요가 있음을 시사한다. This study emphasizes the importance of adapting educational policies and transitioning to a digital education system in the era of artificial intelligence for students with special needs. It aims to investigate the implementation of an intervention using AI speakers equipped with voice recognition technology, a core AI capability, as an educational medium to facilitate adaptation to future societal environments. Building on previous research that highlighted the importance of instructor intervention in communication education, this study seeks to modify and supplement technical, cognitive, and affective scaffolding strategies using AI speakers. The study involved analyzing the verbal characteristics of participating students, developing a communication intervention program based on expert opinions, and applying it to students with developmental disabilities to examine its impact on enhancing pragmatic abilities. The research procedure involved using the communication intervention program, based on scaffolding strategies with AI speakers, as the independent variable and the pragmatic abilities of students with developmental disabilities as the dependent variable. The program was conducted over 20 sessions, twice a week for 10 weeks, with 8 students with developmental disabilities divided into two groups of four. Data analysis employed the Korean Child Meta-Pragmatic Language Test (KOPLAC), utilizing pre- and post-tests, mean and coefficient of variation. The results showed significant improvements in overall pragmatic abilities, communication tuning perception, story discourse information perception, and higher language perception abilities among students with developmental disabilities, indicating a positive effect of the intervention.

영화 장면연출 기법을 바탕으로 한 호텔 외부공간 표현특성에 관한 연구 - 부산광역시, 울산광역시, 경상남도 3성급 이상의 호텔들을 중심으로 -

김동식,백하영 한국실내디자인학회 2019 한국실내디자인학회논문집 Vol.28 No.1

This purpose of this study is to apply a film's scene technique to hotel exterior to form an expressive system of various elements that are perceived by observers. Based on the movie scene presentation techniques, literature examination and field investigation were carried out to identify the components of the outer space of the hotel. Research methods are as follows. First, present the purpose and background of this study and introduce the scope and method of it. Second, based on prior research and literature review, I discussed the concept and components of hotel exterior space, the structure and syntax of the movie, and the link between the hotel exterior space and the film scene presentation technique. Third, hotels with three-star class and over located in Busan, Ulsan, and Gyeongsangnamdo were selected for survey and investigated the components of the outer space of each hotel. Fourth, based on the previous theoretical examination, the film scene presentation techniques were modelled and the analysis items were derived by identifying the space types of hotel exterior space elements. Fifth, based on field survey of 33 subjects, hotel exterior space elements were applied to the film scene release technique to analyze the elements of hotel exterior space in Busan, Ulsan, and Gyeongsangnamdo based on film scene release techniques. Sixth, through the analysis results, I have derived elements of expression in hotel exterior space based on movie scene presentation techniques.

레이아웃의 원리를 기반으로 민방위 대피시설 표지판 유형 및 부착 위치의 특성에 관한 연구

김동식,허레이,백하영 한국실내디자인학회 2019 한국실내디자인학회논문집 Vol.28 No.5

The current evacuation signs of civil defense facilities can be broadly divided into guide sign and guidance sign. It is very important role to guide the correct movement as well as provide evacuation information about civil defense facilities. Evacuation sign of civil defense facility currently inconsistently attached at each underground subway entrance which has different types of visual components including letters and pictograms along with different locations as a structural component. It caused huge visual confusion for users. In addition, due to the negligence of maintenance, many evacuation signs are corroded and discolored as well as even missed at some places. Therefore users may not be able to recognize evacuation signs of civil defense facilities. The purpose of this study is to elucidate various types and locations for evacuation signs of civil defense facilities which is attached at underground subway entrances based on the layout principle so that users can easily identify and access subway stations in emergency. It is also provided new standards as a unified guideline of evacuation sign for civil defense facilities with considering safety issues which is the most important aspect in our society.

온도 및 이산화탄소 조절 환경에서 재배한 천궁(Cnidium officinale Makino)의 항산화 활성 및 페놀 화합물 함량 연구

채철주,이경철,백하영,송영근,장소희,손은화,주원균,구현정 (사)한국스마트미디어학회 2023 스마트미디어저널 Vol.12 No.10

This study aimed to investigate the growth parameters and antioxidant activity of Cnidium officinale under controlled temperature and carbon dioxide levels during the cultivation period. The plants were cultivated for four months, each group being set at the average temperature of the cultivation area +1.8°C/445ppm(SSP1), +3.6°C/872ppm(SSP3), and +4.4°C/1,142ppm(SSP5), respectively. During the cultivation period, the growth, Top/Root ratio, and leaf weight ratio(LWR) of C. officinale slightly decreased in SSP3 and SSP5 compared to SSP1, while the root weight ratio(RWR) increased. The antioxidant activity and related phenolic compound content in the aerial parts of C. officinale increased proportionally with temperature and CO2 concentration. However, an adverse effect was observed in the high-concentration SSP5 group. Conversely, in the roots, the SSP5 group exhibited the highest antioxidant activity. This study suggests that it can be utilized as fundamental data necessary for understanding the correlation between environmental conditions and the growth as well as physiological activities of medicinal plants.

루돌프 아른하임의 시지각 요소를 바탕으로 한 건축물 이미지의 조형예술적 표현특성 연구 - 부산다운 건축상 수상작들을 중심으로 -

김동식,김근식,백하영 대한건축학회지회연합회 2018 대한건축학회연합논문집 Vol.20 No.2

본 연구의 목적은 매년 부산다운 건축상 책자를 통해 문화 홍보의 역할로 부산시에서 실질적으로 실시되고 있는 부산다운 건축상 수상작들을 중심으로 조형예술적 표현특성을 고찰하고자 하는 것이다. 이는 기존의 3차원 입체적인 건축물들을 2차원적인 이미지로 변화시키는 과정에서의 디자인적 이해 및 접근방법을 제시하기 위한 수단으로써 아른하임의 시지각 요소를 적용하여 부산다운 건축상 수상작 조형예술적 표현특성의 경향을 파악하고자 하는 것이다. 연구범위는 부산다운 건축상 심사대상 2013년부터 2016년에 오른 건축물로 선정하였다. 연구의 방법은 첫째, 문헌 및 선행연구를 중심으로 부산다운 건축상 수상작의 심사 기준 및 내용을 포함한 건축물의 특성 및 현황을 정리한다. 둘째, 루돌프 아른하임의 시지각 이론을 고찰한 다음 시지각 요소의 특성을 도출한다. 셋째, 조사대상의 선정 및 분석항목을 분류한다. 앞서 도출한 분석항목을 토대로 분석요소를 도출한다. 넷째, 앞서 도출된 분석요소를 부산다운 건축상 수상 건축물에 적용하여 조형예술적 표현요소들을 분석한다. 최종적으로, 부산다운 건축상 수상작에 있어서 년도 별로 건축적 구성요소와 시각적 구성요소의 경향을 파악하고 부산도시공간의 특성을 고려한 조형예술적 표현특성에 대한 결과를 정리한다. The purpose of this study is consider the characteristics of the formative artistic expression by focusing on actually running award about architectural prize of Busan which is role of cultural promotion through each year’s brochure of architectural prize of Busan. It is a means to present design understanding and approach in the process of transforming the original three dimensional architecture into a two dimensional image by analyzing the visual perceptual elements of Arnheim and to understand the trend of formative artistic expressions of architectural prize of Busan. Range of research is architectural prizes of Busan in 2013 to 2016. A study of method is divided five sections. First, arrange the building’s characteristics and status which is including the examination standard of architectural prize of Busan and the contents by focusing on literature and preceding research. Second, consider a Rudolf Arnheim’s visual perceptual element and then derive characteristic of visual perceptual element. Third, select a research subject and categorize an analysis item. Fourth, analyze the formative artistic expression to reflect the architectural prize of Busan by analysis element which is already found. At last, figure out the trend of visual elements and architectural components base on architectural prize of Busan and arrange the result about the characteristics of the formative artistic expression considering property of city space in Busan.

일부 치위생(학)과 학생들의 현장임상실습 만족도의 영향을 미치는 요인

심선주(Seon-Ju Sim),백하영(Ha-Oung Baek),엄정선(Jung-Sun Um),정하얀(Ha-Yan Jung),지혜미(Hey Mi Ji),황시내(Si-Nae Hwang),한지혜(Ji-Hey Han) 대한치과의료관리학회 2017 대한치과의료관리학회지 Vol.5 No.1

가스레인지의 조리기구 고정장치 개발

이주은(J. E. Lee),백하영(H. Y. Baek),허장욱(J. U. Heo),최성대(S. D. Choi) 한국기계가공학회 2016 한국기계가공학회 춘추계학술대회 논문집 Vol.2016 No.4