Effect of Applying Various Time of Retinol Pretreatment on Improve Skin after Herbal Peeling

Seongeun Oh,Chang-Gok Chang 한국피부과학연구원 2020 아시안뷰티화장품학술지 Vol.18 No.4

목적: 본 연구의 목적은 약초필링 이전에 기간이 다른 레티놀 전처리가 필링 후 발생하는 부작용을 최소화하고 피부 개선 효과를 검 증하고자 하였다. 방법: 약초필링 전 레티놀로 전처리 하지 않은 그룹을 Group 1 (G1, 대조군), 약초필링전 4주간(8주-12주) 레티 놀로 전처리한 그룹을 Group 2 (G2), 약초필링전 8주간(4주-12주) 레티놀로 전처리한 그룹을 Group 3 (G3), 약초필링 전 12주간(1 주-12주) 레티놀로 전처리한 그룹을 Group 4 (G4)로 하였다. 연구기간은 총 15주간 진행되었는데, 필링전 레티놀 전처리 기간 시 작점을 달리하여 G 4는 첫 주부터, G 3은 4주째부터, G 2은 8주째부터 레티놀 적용 홈케어를 하였다. 실험 전, 13주차(필링 1 주일) 및 15주차(필링 2 주 후)의 피부 홍반 지수, 수분 함량, TEWL 및 거칠기를 측정하였다. 결과: 본 연구를 통해 기간이 다른 레티놀 전처리가 수분증가와 홍반, TEWL 및 거칠기의 감소를 확인할 수 있었다. 레티놀 전처리 그룹은 미전처리 그룹보다 홍반이 낮으며, 유의한 차이가 있는 것으로 나타났다. 또한 레티놀 전처리 그룹은 미전처리 그룹보다 보습이 높았으며, 유의한 차이가 있는 것으로 나타났다. 레티놀 전처리 그룹은 미전처리 그룹보다 TEWL 및 거칠기가 낮았을 뿐만 아니라 유의한 차이가 있는 것으로 밝혀졌다. 홍반, 수분, TEWL, 거칠기에서 G4는 G3보다 더 큰 변화가 있었고 G3은 G2보다 더 컸다. 따라서 장기적인 레티놀 전처리 그룹은 홍반, 탈수, 피부 자극 개선 및 완화에 긍정적인 효과가 있는 것으로 확인됐다. 결론: 이상의 결과를 바탕으로 필링 전 기간을 달리 한 레티놀 전처리는 기간이 증가할수록 홍반, 수분 부족, 피부자극증상을 개선, 완화하는데 있어 긍정적인 효과를 나타내므로, 향후 피부 개선에 가장 효과적인 전처리로써의 레티놀 함량에 따른 제제의 안정성, 사용기간에 관한 연구가 좀 더 다양하고 폭넓게 진행 되어 필링 전 전처리 프로그램으로써 대중화가 될 수 있도록 적극 활용되기를 기대한다 Purpose: Retinol, a vitamin A derivative, is used as a pretreatment by applying it multiple times on the affected skin before herbal peeling to minimize side effects and to heal damaged skin. However, the effects of retinol as a pretreatment are unknown. Thus, this study evaluates the effects of retinol as a pretreatment for skin improvement. Methods: Middle-aged women were recruited as participants in this study and were divided into four groups, namely, without retinol pretreatment (G1), retinol pretreatment for 4 weeks (G2), 8 weeks (G3), and 12 weeks (G4). The test was conducted 15 times. Before peeling, participants in the G1, G3, and G4 groups were pretreated with retinol cream on their skin for the indicated time periods, whereas those in G1 did not receive the pretreatment. Skin erythema index, moisture content, transepidermal water loss (TEWL), and roughness were measured before the experiment, on the peeling day, and 1 and 2 weeks after peeling. Results: Significant differences in the skin erythema index, moisture content, TEWL, and roughness were found between the pretreated and non-pretreated groups. The pretreated groups experienced higher moisture content, lesser erythema, lower TEWL, and lesser roughness than the non-treated group. In addition, G4 had a larger improvement than G3, and G3 had a larger improvement than G2. Conclusion: The results showed that long-term use of retinol is effective in relieving erythema, dehydration, and skin irritation.

Mathematical Programming and Optimization of the Resource Allocation and Deployment for Disaster Response : AED case study

Seongeun Hwang(황성은),Nagyeong Lee(이나경),Dongkuk Jang(장동국),Dongil Shin(신동일) 한국가스학회 2021 한국가스학회지 Vol.25 No.3

노년층뿐만 아니라 청년층에 속하는 성인들 사이에서도 병원 외 심장정지(OHCA)를 겪는 심장질환자의 수가 증가하고 있다. 자동심장충격기(AED)는 병원 외 심장정지 환자의 생존율을 개선하는 데 있어 긴요하다. 심장정지 생존율은 제세동 시간에 대하여 지수적으로 감소(decline exponentially)하는 것으로 밝혀졌으나, 자동심장충격기의 최적 배치에 있어 심장정지 생존율의 이러한 특성을 반영한 국내 연구가 미미한 상황이다. 본 연구에서는 자동심장충격기의 최적 입지를 결정하기 위하여 exponential decay coverage 함수를 갖는 최대 gradual coverage 입지 모델에 대하여 고찰하였다. exponential decay coverage 함수는 심장정지 환자의 생존율에 대한 과다추정을 완화한다. 향후 시뮬레이션을 통하여 랜덤한 행인 위치 및 이동을 반영함으로써 행인의 심정지 대응에 있어 창발적인(emergent) 특징을 식별할 수 있는 시설 입지 모델이 개발될 것으로 예측된다. The number of patients with cardiovascular diseases who experience an out-of-hospital cardiac arrest (OHCA) are increasing among young adults as well as the aged population. An automated external defibrillator (AED) is vital in improving survival rates of OHCA victims. Survival rates of OHCA were shown to decline exponentially in time to defibrillation, yet studies in Korea are uncommon that captures the properties of their survival rates in examining optimal locations of AEDs. In this study, we worked on the maximal gradual coverage location problem (MGCLP) with exponential decay coverage function to decide on their optimal locations. The exponential decay coverage function mitigates the drawback of over-estimating survival rates of OHCA patients. It is expected that a more sophisticated facility location problem will be developed to identify the “emergent” characteristics of pedestrians who responds to the OHCA occurrence by incorporating random pedestrian locations and movement through simulation.

Madness, the Smile, and Transnational Connections in “A Whisper in the Dark”

( Seongeun Jin ) 서울대학교 미국학연구소 2021 미국학 Vol.44 No.1

Due to her successful novel Little Women (1869), Louisa May Alcott has generally become known as a writer of sentimental fiction. However, her thrillers demonstrate her keen insights into domestic and international issues. Alcott’s so-called “left hand” shows her stances on political and historical issues in America as well as in Europe and Asia. Particularly, Alcott’s supporting voice for women against social prejudices is metaphorically portrayed in “A Whisper in the Dark” (1861). Interestingly, in the story Alcott displays her knowledge of the drug trades and the cultural effects of white male colonizers exploiting other peoples and countries around the globe, which were issues that she had learned about from neighboring intellectuals and newspapers. In the paper, I examine Alcott’s radical views on gender equality, chauvinistic attitudes, and transnational politics in the mid-nineteenth century.

The Spatialization of London’s East End and Irishness in C. S. Lewis’s The Chronicles of Narnia

( Seongeun Jin ) 21세기영어영문학회 2018 영어영문학21 Vol.31 No.1

The mythic aspects in C. S. Lewis’s The Chronicles of Narnia have mainly attracted critics to discuss Lewis’s view of theology. Nevertheless, his birth origin of Anglican Irish seems to complicate the sense of masculinity and nobleness in Narnia in relation to Englishness and gender. Hitherto, many critics have asserted that whiteness in Narnia reinforces the lost power of Christianity in England. Yet Englishness in Narnia still calls into question many cultural reflections of nationhood, class, and gender. More specifically, in this paper I explore a gendered notion of Irishness and veiled references to the excluded locality of London’s East End in The Chronicles of Narnia. Social mobility of the urban poor and neglected female positions are related to the historical site of the East End and occupational changes among Irish women during the World Wars. Thus, Lewis’s background of Northern Ireland unveils his backward or nostalgic portrayals of a utopian world in Narnia. I suggest that otherness and ambivalent Englishness should further display the long history of exclusion of Irish people and the evolving values of class and gender in English society in Lewis’s The Magician’s Nephew and The Lion, the Witch and the Wardrobe.

Transnational Allegories of Image and Likeness in Louisa May Alcott’s “Behind a Mask, or A Woman’s Power”

( Seongeun Jin ) 서울대학교 미국학연구소 2020 미국학 Vol.43 No.1

“Behind a Mask” (1866) marks the new direction of Louisa May Alcott’s artistic and personal life. Her European trip solidified her identity as a mature woman, most importantly as a mature American woman, one whose independence from Victorian stereotypes would, from now on, make her fortune and fame. Her sensational stories, especially “Behind a Mask,” would tell truths that readers recognized but had rarely seen written. These truths would free them, and the author herself, to explore their talents as individuals. Henceforth, Alcott would embody the successful American artistic entrepreneur as one who shed the European domination of false titles and inherited wealth. These motifs of the transnational connection pervade the story, in the form of images and likenesses. Just as Alcott would soon, in two years, reach astonishing financial success with the publication of Little Women, her meteoric ascent parallels America’s rise to power in the world’s economy, which came about with almost alarming speed after the conclusion of the American Civil War.

A Study of the Effects of Swedish Massage in a Multisensory Environment on the Health of Women in their 40s and 50s

Seongeun Oh 한국피부과학연구원 2021 아시안뷰티화장품학술지 Vol.19 No.3

목적: 본 연구는 40, 50대 중년 여성을 대상으로 다감각환경(스노젤렌) 공간에서의 스웨디쉬 발마사지를 통한 신체 및 심리효과를 분석하기 위한 목적으로 수행되었다. 방법: 스노젤렌 발마사지군 MSE+FM (처치군), 일반 발마사지군 FM (비교군Ⅰ), 스노젤렌군 MSE (비교군Ⅱ)및 무처치 CG (대조군)의 네 그룹으로 구분하여 각 처치군 별로 30명을 무작위 배정하였다. 결과: 근긴장도는 처치 군, 비교군Ⅰ, 비교군Ⅱ, 대조군으로 처치군이 근긴장도가 가장 낮았고, 비교군Ⅰ과 비교군Ⅱ가 다음순 이었고, 마지막 대조군으로 유의한 차이가 있었다(F=52.686, p<0.001). 심리적 스트레스는 처치군, 비교군Ⅰ, 비교군Ⅱ, 대조군)으로 처치군이 가장 심리적 스 트레스가 낮았고, 비교군Ⅰ과 비교군Ⅱ가 다음순 이었고, 마지막 대조군으로 유의한 차이가 있었다(F=141.428, p<0.001). 심리적 안녕감은 처치군, 비교군Ⅰ, 비교군Ⅱ, 대조군으로 처치군이 가장 심리적 안녕감이 높았고, 다음으로 비교군Ⅱ, 비교군Ⅰ 순으로 높았고, 대조군이 가장 낮은 것으로 나타났으며, 유의한 차이가 있었다(F=428.022, p<0.001). 지각된 건강상태는 처치군, 비교군, 비교군Ⅱ, 대조군으로 처치군, 비교군Ⅰ이 지각된 건강상태가 높았고, 다음으로 비교군Ⅱ 순으로 높았고, 대조군이 가장 낮았으며, 유의한 차이가 있었다(F=224.395, p<0.001). 결론: 이러한 결과를 통해 스웨디쉬 발마사지만으로도 훌륭한 대체요법으로 인정받고 있지만, 여기에 스노젤렌공간을 중재한다면 신체 및 심리적 개선에 시너지 효과를 낼 것으로 사료된다. 따라서, 스노젤렌이라는 공 간을 좀 더 제품 지향적으로 개발하여 신체, 심리적으로 이완 상태를 즉각적으로 달성할 수 있는 효과적인 방법으로 활용함으로써 중년 여성의 삶의 질을 향상시키고, 미용 분야의 연구 범위를 확장 시키며, 실무적으로 에스테틱 산업 발전에 유용한 정보를 제공할 수 있을 것으로 기대한다. Purpose: This study aimed to examine the physical and psychological effects of foot massage for middle-aged women in the snoezelen space. Methods: Participants were randomly divided into four groups of 30 persons each: the snoezelen foot massage group (MSE+FM, treatment group), general foot massage group (FM, comparison group I), snoezelen group (MSE, comparison group II), and untreated (CG, control group). The foot massage program was operated at snoezelen space for 30 min once, once a week, and four times for four weeks. Results: Muscle tone was lowest in the treatment group, followed by the comparison group I and comparison II; whereas, the control group appeared to have the highest (F =52.686, p <0.001). Psychological stress was lowest in the treatment group, followed by the comparison group I and comparison II, while the control group appeared to have the highest (F =141.428, p <0.001). Psychological well-being was highest in the treatment group, followed by the comparison group II, comparison group I, and control group (F =428.022, p <0.001). The perceived health status was highest in the treatment group and comparison group I followed by comparison group II, and the control group (F =224.395, p<0.001). Conclusion: The findings of the present study showed that Swedish foot massage alone are recognized as an excellent alternative therapy; however, it is thought that if the snoezelen space is mediated here, it will have a synergistic effect on physical and psychological improvement.

Biosynthesis of Hydrophobic Squalene Using Microbial Bioprocess in Corynebacterium glutamicum and Formulation of Nanoemulsions

Seongeun KIM,Jaehyun PARK,Han Min WOO 한국생물공학회 2022 한국생물공학회 학술대회 Vol.2022 No.9

Effect of Artemisia littoricola Extracts on UVA Induced Photo-Aging in Human Dermal Fibroblasts

Seongeun Jeon,Mi-Na Choi,Hyunjung Lee,Jiho Yang,Jung Hwan Oh,Fatih Karadeniz,Xianrong Zhou,Youngwan Seo,Chang-Suk Kong 한국식품영양과학회 2022 한국식품영양과학회 학술대회발표집 Vol.2022 No.10

Transnational Voyage Narratives and Cultural Dynamics of Race in Edgar Allan Poe’s The Narrative of Arthur Gordon Pym of Nantucket and C. S. Lewis’s The Voyage of the Dawn Treader

Seongeun Jin 21세기영어영문학회 2017 영어영문학21 Vol.30 No.3

Psychological journeys surface as geographical explorations in Edgar Allan Poe’s The Narrative of Arthur Gordon Pym of Nantucket (1838) and C. S. Lewis’s The Voyage of the Dawn Treader (1952). Hitherto, the racial topography across the Atlantic in the two books has not received full attention. Instead, critics have focused on apocalyptic complexities because of ambiguous references to subliminal encounters with redemptive values at the ends of the two stories. Those conclusions culminate in a form of regressive returning to the comfort zone of whiteness. Nonetheless, underneath their voyage narratives, Poe and Lewis center upon the struggles of the human psyche due to racial anxieties. They further illustrate the main characters’ agitation aroused by the terror of darkness. This article uncovers the two authors’ transatlantic perceptions and the popular culture perceptions of the British and northern American imperial territories. These perceptions parallel the moral dilemmas between liberating other races and suppressing the insurgent Other. Thus, the article examines Lewis’s and Poe’s growing awareness of threatened nationhood in the mixtures of Romanticism and racial tensions, mixtures that preface the anti-colonial outbreaks of violence in both 19th and 20th centuries.

A Study on Military Makeup Design With Camouflage Characteristics during CRISIS

Seongeun Park,Jungsoon Choi J-INSTITUTE 2021 International Journal of Crisis & Safety Vol.6 No.2

Purpose: Since the beginning of times, humans have had to deal with food, clothing, and shelter. As they evolved and progressed, they did not have any medium of protection when dangers emerged from the environment, like animals. The origins of the army, was as a group of humans who had to protect themselves. Camouflage started when humans had to protect themselves from other humans, rather than animals or external factors, so they needed an additional protection apart from weapons. Method: This study concluded that military camouflage pattern characteristics were concealment, display, and distortion, respectively. Based on these features, camouflage makeup patterns were conceived. Concealment is hiding in order to permeate terrain in a war; showiness is a means of showing one’s rank or situation by means of a military uniform; and distortion is similar showing a distorted appearance by concealing it. Results: Based on Camouflage Art, which shows us as if we re one in our surroundings.Using the camouflage characteristics of the military look, three works were made with makeup, symbolic colors were added to make each characteristic visible, and objects were used to express them. Conclusion: This work is a research on makeup patterns that use protective media such as camouflage in crisis. It is believed that this study can have a good influence not only in the industrial application of beauty but also in the military and fashion circles.