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신형민(Shin, Hyung-Min),김성민(Kim, Sung-Min),송재연(Song, Jae-Yeon),유다솜(Yu, Da-Som),최혜주(Choi, Hye-Ju),윤지현(Yoon, Ji-Hyun),강다혜(Kang, Da-Hye),이상운(Lee Sang-Un) 한국방송·미디어공학회 2017 한국방송공학회 학술발표대회 논문집 Vol.2017 No.11
기존 중계시스템은 모든 신호들이 유선으로 연결되어 있어 중계차가 접근 할 수 없는 지역에서는 운용의 어려움 등 이동과 거리에 제약이 있다. 또한 수많은 케이블이 필요하기 때문에 결선작업이 복잡하고 작업시간이 오래 걸리는 단점을 가지고 있어 무선 중계 시스템을 이용하여 프로그램을 제작하면 이러한 문제점을 해결할 수 있다. 이에 본 논문에서는 RF무선영상송수신기와 백팩 LTE등 무선중계시스템의 장단점을 비교분석하였고 이에 통해 효율적인 무선중계시스템을 설계하였다. 또한, 제안된 시스템을 이용하여 방송중계업무의 편리성이 극대화하고 새로운 형태의 방송 포맷을 개발할 수 있도록 하였다.
중주파 전기 근육자극을 활용한 가정용 미용기기의 안면 피부 개선 효과
신다솜 ( Da-som Shin ),박민정 ( Min-jung Park ),최예지 ( Ye-ji Choi ),허유경 ( Yu-kyung Hur ) 한국미용학회 2022 한국미용학회지 Vol.28 No.5
This study was aimed to investigate the effects of the EMS (Electrical Muscle Stimulation) at-home beauty device on the facial skin improvement. The EMS beauty device massages the skin surface and the muscle layer in the skin through a combination of medium frequency electrical stimulation and physical stimulation that are known to effective in skin rejuvenation. In this study, the EMS beauty device reproducing Petrissage massage method and functional cosmetic containing adenosine were used. For four weeks of study period, the EMS beauty device and the functional cosmetic were applied together to the test group with 11 women, whereas only the functional cosmetic was applied to the control group with 11 women. The EMS beauty device was applied for 10 minutes every night after cleansing face to the test group only, and the functional cosmetic was applied every morning and night after cleansing face to both groups. The skin improvements were evaluated after two and four weeks from the first visit (baseline) by mechanical measurements. As the evaluation results, significant (p<.05) improvements of skin elasticity (R2 and Mean CoR), skin sagging, and double chin lifting showed in the test group compared with the baseline, and compared with the control group. Therefore, the EMS beauty device is considered to be effective to improve skin features related to skin aging. And this study may expect to be useful data for global advancement and enforcement of market competitiveness of K-beauty industry and to be a foundation for further in-depth study.
Hydroxy Acids를 함유한 바디 필링 미스트의 AHA 농도비 차이에 따른 여드름성 피부 개선에 관한 임상적 연구
홍수경 ( Su-gyeong Hong ),곽소영 ( So-young Kwak ),신다솜 ( Da-som Shin ),최예지 ( Ye-ji Choi ),정수민 ( Su-min Jung ),허유경 ( Yu-kyung Hur ) 한국미용학회 2024 한국미용학회지 Vol.30 No.3
The purpose of this study was to compare the improvement of acne skin according to the difference in AHA concentration ratio of body peeling mist containing Hydroxy Acids in 30 healthy people with acne in the body. We observed back acne and skin conditions for 6 weeks with three comparison groups containing 21.65% AHA, 24.00% AHA, and 26.50% AHA. As a result of observing acne skin improvement after 6 weeks, the difference between the three groups was not statistically significant, but the change in the ratio to the baseline of inflammatory and non-inflammatory acne lesions and the change in Michaelson’s Acne Severity Index (ASI) were significantly reduced according to the measurement time of each group. As a result of observing skin improvement in Sebum, Flakiness, Moisture after 6 weeks, the L group showed statistically related changes in skin moisture, the M group showed skin sebum, skin flakiness, skin moisture, and the H group showed statistically related changes in skin flakiness, skin moisture. In addition, the subjective skin irritation was the highest in the H group, and the subjective feeling of usage was the highest in the M group. Collectively, the results indicated that acne skin improvement rate and subjective satisfaction were the highest in group M using HA’s 32.00% product (AHA 24.00%), which is useful for the production and development of acne care cosmetics.
( Sang-su Kim ),( Cheol Hong Kim ),( Ji Wook Kim ),( Hsi Chiang Kung ),( Tae Woo Park ),( Yu Som Shin ),( Ju Deok Kim ),( Siejeong Ryu ),( Wang-joon Kim ),( Yung Hyun Choi ),( Kyoung Seob Song ) 생화학분자생물학회 2017 BMB Reports Vol.50 No.10
CLB<sub>2.0</sub>, a constituent of PM, induces secretion of multiple cytokines and chemokines that regulate airway inflammation. Specifically, IL-6 upregulates CLB<sub>2.0</sub>-induced MUC5AC and MUC1 expression. Interestingly, of the tight junction proteins examined, claudin-1 expression was inhibited by CLB<sub>2.0</sub>. While the overexpression of claudin-1 decreased CLB<sub>2.0</sub>-induced MUC5AC expression, it increased the expression of the anti-inflammatory mucin, MUC1. CLB<sub>2.0</sub>-induced IL-6 secretion was mediated by ROS. The ROS scavenger N-acetylcysteine inhibited CLB<sub>2.0</sub>-induced IL-6 secretion, thereby decreasing the CLB<sub>2.0</sub>-induced MUC5AC expression, whereas CLB<sub>2.0</sub>-induced MUC1 expression increased. CLB<sub>2.0</sub> activated the ERK1/2 MAPK via a ROS-dependent pathway. ERK1/2 downregulated the claudin-1 and MUC1 expressions, whereas it dramatically increased CLB<sub>2.0</sub>-induced MUC5AC expression. These findings suggest that CLB<sub>2.0</sub>-induced ERK1/2 activation acts as a switch for regulating inflammatory conditions though a ROS-dependent pathway. Our data also suggest that secreted IL-6 regulates CLB<sub>2.0</sub>-induced MUC5AC and MUC1 expression via ROS-mediated downregulation of claudin-1 expression to maintain mucus homeostasis in the airway. [BMB Reports 2017; 50(10): 516-521]