해조류 메탄올 추출물의 Prolyl Endopeptidase, Tyrosinase 저해 및 항응고 활성 스크리닝

이현진,김진희,이주현,김종식,곽상태,이경복,송경식,최병욱,이봉호,Lee, Hyun-Jin,Kim, Jin-Hui,Lee, Chu-Hyun,Kim, Jong-Sik,Kwak, Sang-Tae,Lee, Kyung-Bok,Song, Kyung-Sik,Choi, Byung-Wook,Lee, Bong-Ho 한국생약학회 1999 생약학회지 Vol.30 No.3

About forty sea weeds were screened for their inhibitory effects against prolyl endopeptidase, tyrosinase and thrombus coagulation. Out of them, methanolic extract of Ecklonia cava, Sargassum patens, Sargassum hemiphyllum, Sargassum thunbergii, Sargassum singgildianum, Hizikia fusiformis, and Ishige okamurae inhibited more than 90% of prolyl endopeptidase activity at 40 ppm. Sargassum siliquastrum and Ecklonia cava exhibited 51% and 76% of inhibitory activity against tyrosinase at 40 ppm, respectively. In APTT assay system, Sargassum singgildianum, Pterocladia capilacea and Hizikia fusiformis delayed coagulation of thrombus about two times (210, 211, and 198% over control at ca 367 ppm, respectively) and in TT assay, Lomentaria catenata, Laurencia okamurae, and Hizikia fusiformis did most effectively (216,197, and 251% at ca 367 ppm, respectively).

광대역 다중공진 평판 안테나 설계 및 구현

이현진,박성일,임영석,Lee, Hyeon-Jin,Park, Seong-Il,Lim, Yeong-Seog 대한전자공학회 2005 電子工學會論文誌-TC (Telecommunications) Vol.42 No.12

This study designed and fabricated a multi-purpose planar antenna for base stations that are accessible to DCS, WiBro, and ISM. The proposed antenna was designed into an open loop form from the existing monopole structure. The capacitance of the multi-purpose antenna was increased by the coupling of open parts. This makes the use of MMIC and LTCC convenient and the antenna is smaller and has a larger gain than existing antennas. The resonance distance and bandwidth can be adjusted by changing the open gap and the height of the loop of the antenna. The bandwidth of the designed antenna satisfies DCS, IMT-2000, WiBro, Bluetooth, wireless LAN and ISM bands based on VSWR 2. The entire frequency bandwidth is $58.75\%$ of $1.575GHz\~2.985GHz(1.41GHz)$. Also, the radiation pattern of the antenna displayed co-polarization and cross-polarization characteristics at 1.6GHz, 2.3GHz and 2.8GHz. 본 논문에서는 DCS와 WiBro 및 ISM 수용이 가능한 기지국용 광대역 다중공진 평판 안테나를 설계 및 제작하였다. 제안한 안테나는 기존의 모노폴 구조를 개방 루프 형태(폴디드 형태)로 수정하여 개방 부분의 결합에 의한 캐패시턴스를 증가시킨 광대역 다중공진 안테나를 설계하였다. 제안된 안테나는 도파관 급전 방법의 인쇄형 평판 안테나로 단일 층으로 구현되어 MMIC 및 LTCC의 이용이 용이하며 기존의 안테나보다 크기가 작고 높은 이득을 갖는다. 안테나 구조의 개방 부분의 간격과 루프 형태의 높이를 조절하여 공진 거리 및 대역폭을 조절 할 수 있다. 설계한 안테나의 대역폭은 정재파비 2 이하를 기준으로 DCS와 WiBro 및 ISM대역을 모두 충족하였으며 전체의 대역폭은 $1.575GHz\~2.985GHz(1.41GHz)$의 $58.75\%$의 주파수 대역폭을 얻었다. 또한, 안테나의 방사패턴은 1.6GHz, 2.3GHz, 2.8GHz에서의 Co-Polarization과 Cross-Polarization의 특성을 측정하였다.

군용차량 방탄재 최적화에 관한 연구

이현진,최재식,김근원,신기수,Lee, Hyun-Jin,Choi, Jae-Shik,Kim, Geun-Won,Shin, Ki-Su 한국군사과학기술학회 2013 한국군사과학기술학회지 Vol.16 No.4

During the land operations, the enemy's gunnery is the primary threat. For the military vehicle, the bulletproof effect is the one of the important issues regarding the safety of soldiers on duty. Recently, the advanced military vehicles have planned to install armor plates. However, due to the budget problem, it is difficult to equip the protection systems. Hence, the optimum approach to increase bulletproof capability is essential. In this paper, the optimum thickness and component of the armor of military vehicles were evaluated by using finite element analysis for bullet impact effects. To achieve this aim, 7.62mm NATO bullet, 1.6mm steel and Kevlar-29 composite have been modeled and the simulations were conducted with various thickness cases by using MSC Nastran sol 700. Consequently, it was revealed that Kevlar-29 45 Layer is appropriate thickness for 7.62 bulletproof. Furthermore, Kevlar-29 in front of steel was effective by comparison with the back of steel for bulletproof.

Fe₂O₃가 코팅된 판상 mica의 적외선 반사용 적색안료 제조 및 차열도료의 열특성

이현진,김대성,이승호,임형미,최병기,강광중,정재일,조금성,Lee, Hyun Jin,Kim, Dae Sung,Lee, Seung-Ho,Lim, Hyung Mi,Choi, Byung-Ki,Kang, Kwang-Jung,Jeong, Jae Il,Cho, Kum-Sung 한국재료학회 2015 한국재료학회지 Vol.25 No.2

$Fe_2O_3$ coated plate mica($Fe_2O_3$/mica) for infrared reflectance red pigment was prepared under hydrothermal treatment. $Fe_2O_3$ was perfectly coated on mica via the difference of surface charge between $Fe_2O_3$ and mica particles at pH 3. $Fe_2O_3$/mica was then calcined at $800^{\circ}C$ to stabilize the coated layer on mica. The infrared(IR) reflectance pigments were characterized by X-ray diffraction, FE-SEM, zeta potential, and a UV-Vis-NIR spectrophotometer. In particular, the CIE color coordinate and IR reflectance properties of $Fe_2O_3$/mica pigments were investigated in relation to the thickness variation of the $Fe_2O_3$ layer coated on mica of various lateral sizes. The isolation-heat red paints containing the pigments were prepared and optimized with a thinner, settling agent, and dispersant. Then, the films were made. The thermal property of isolation-heat on these films was observed through the relationship of the IR reflectance value, which was based on the variation of the $Fe_2O_3$ layer's thickness coated on mica and mica's lateral size as IR reflectance pigment. With an increase in IR reflectance on these films, the thermal property of isolation-heat was effectively enhanced.

양양군과 포항 해역에 시설한 인공어초에서 진행된 해조천이와 군집에 관한 연구

이현진,최창근,Lee, Hyeon Jin,Choi, Chang Geun 한국해양생명과학회 2019 한국해양생명과학회지 Vol.4 No.2

이 연구는 2016년 9월에 강원도 양양군 남애리, 경상북도 포항시 구룡포읍 석병2리에 설치한 인공어초를 대상으로 해조류 군집 변화를 관찰하기 위하여 연구를 수행하였다. 현장조사는 2017년 2월, 5월, 8월, 11월에 계절별 1회씩 SCUBA Diving으로 수행하였으며, 정량조사와 정성조사를 병행하였다. 본 연구에서 녹조류 11종, 갈조류 15종, 홍조류 68종을 포함하여 총 94종이 채집되었으며, 양양에서 66종(녹조류 8종, 갈조류 9종, 홍조류 49종), 포항에서 65종(녹조류 7종, 갈조류 9종, 홍조류 49종)이 채집 및 동정되었다. 중요도를 기반으로 판단한 우점종의 경우, 양양은 다시마(Saccharina japonica)가 우점종, 구멍갈파래(Ulva australis)가 준우점종이었으며 포항은 불레기말(Colpomenia sinuosa), 우뭇가사리(Gelidium elegans) 순으로 우점하였다. 두 해역 모두 어초 설치 초기에 각각 파래류, 불레기말이 착생한 후, 다시마, 감태, 우뭇가사리 등 다년생 해조가 생육하며 우점하여 기존의 천이 패턴과 유사하였다. 해조상 변화를 통해 군집관계를 명확히 하기 위해서는 추후 지속적인 모니터링을 통해 장기적인 변화를 관찰하여 해조군락이 안정되기까지의 천이 과정에 관한 모니터링이 필요한 것으로 판단된다. This study was carried out to observe the changes of seaweed community in artificial reefs installed in September, 2016 in Namae-ri, Yangyang-gun, and Seokbyeong-ri, Pohangsi, Korea. Field surveys were conducted by SCUBA diving once a season in February, May, August, and November of 2017, and quantitative survey and qualitative survey were carried out in parallel. In this study, a total of 94 species, including 11 green algae, 15 brown algae and 68 red algae were appeared. 66 species (8 green algae, 9 brown algae, 49 red algae) and 65 species (7 green algae, 9 brown algae, 49 red algae) were collected and identified in Yangyang and Pohang. In dominant species, Yangyang was dominant species of Saccharina japonica and subdominant species of Ulva australis. Pohang dominated in order of Colpomenia sinuosa and Gelidium elegans. In both coastal areas, Ulva spp., Colpomenia sinuosa were grown at the early stage of reforestation, and perennial seaweeds such as Saccharina japonica, Ecklonia cava and Gelidium elegans were grown. In order to clarify the clustering relation through flora change, it is necessary to monitor the transition process until the seaweed community is stabilized by observing the long-term change through continuous monitoring.

임플란트 수술 시의 합병증; 증례 보고

이현진,여덕성,임소연,안경미,손동석,Lee, Hyun-Jin,Yeo, Duck-Sung,Lim, So-Yeon,An, Kyung-Mi,Sohn, Dong-Seok 대한구강악안면외과학회 2007 대한구강악안면외과학회지 Vol.33 No.2

According to the increase in use of implants in clinical dentistry, new kinds of complications happen. Complications that can happen during implant placement are bleeding, nerve injury, jaw fracture, fenestration of maxillary sinus or nasal cavity, dehiscence, fenestration, injury of adjacent tooth. And complications that can happen after implant operation are infection, bleeding, hematoma, chronic sinusitis, peri-implantitis. Problems that are confronted during implant placement happen by inadequate preoperative treatment plan, inadequate consideration about individual anatomic difference, inadequate operation process and lack of experience of clinician. It is important that clinicians consider possible complications in advance and make a comprehensive treatment plan. We report the patient who was happened ramus fracture during block bone harvesting from ramus of severely atrophic mandible, the patient who came to emergency ward due to postoperative swelling and bleeding and the patient whose implant was migrated to maxillary sinus with a review of literature.

한방치료로 관해가 유도된 소아 크론병 환자의 증례 보고

이현진,이하늘,정해인,조윤재,금창열,한아람,하나연,김진성,Lee, Hyun-Jin,Lee, Hanul,Jeong, Hae In,Cho, Yun-jae,Keum, Chang-Yul,Han, Aram,Ha, Na-yeon,Kim, Jinsung 대한한방내과학회 2021 大韓韓方內科學會誌 Vol.42 No.5

Objectives: This case study examined the effectiveness of Korean medical treatment for pediatric Crohn's disease. Methods: A 15-year-old female Korean patient with Crohn's disease received acupuncture, electroacupuncture, herbal medicine, moxibustion, and aromatherapy treatment for 1 month in a hospital. Results: Decreases in the Pediatric Crohn's Disease Activity Index score (from 22.5 to 7.5) and the size of two abscesses (from 39.97 mm to 33.36 mm, and from 28.14 mm to 18.71 mm) according to an abdominal CT were observed following treatment. Nausea and vomiting disappeared, stool condition improved, and weight increased (from 30 kg to 33 kg) following treatment. Nausea and vomiting disappeared, stool condition improved, and weight increased (from 30 kg to 33 kg) following treatment. Conclusion: It would be worth examining the long-term effectiveness of Korean medical treatment for pediatric Crohn's disease.

프레이리(Freire) 교육론이 중등학교 가정과교육에 주는 시사점 및 실천방안

이현진,채정현,Lee, Hyun-Jin,Chae, Jung Hyun 대한가정학회 2022 Human Ecology Research(HER) Vol.60 No.3

The purpose of this study was to explore the implications of Freire's education theory for secondary school Home Economics Education (HEedu). We conducted a review of books written by Freire and classified the characteristics of his education theory into 9 categories. Based on these categories, we concretely explored the forms in which Freire's education theory could be applied in this area of education through interviews with Home Economics (HE) teachers. We also searched for activities that can be carried out by HEedu agents and the support that can be given by social institutions. The implications of Freire's education theory for HEedu are that education should exhibit love and respect for human beings, be ethically and democratically responsible, enable people to dream as well as hope, support consciousness and praxis by reflection, stimulate epistemological curiosity in learners' lives and experiences, promote subjectivity, autonomy and self-reliance, engage in dialogue to bring about a change in relationships rather than viewing dialogue as a skill, and stimulate political engagement. Freire's education theory therefore has multiple implications for the purpose, mission, and content of education, teaching methods and perspectives, and directions regarding the role of HE teachers. The results are expected to provide practical assistance in developing a persuasive curriculum for HEedu that can help learners restore subjectivity and love for human beings and their society by expanding the horizons of HEedu philosophy from the critical science of Habermas to Freire's education theory.

그레고리 데푸

이현진,Lee, Hyeon-Jin 대한제과협회 2003 베이커리 Vol.5 No.-

생협복지의 의미와 실천

이현진,김흥주,Lee Hyunjin,Kim Heungju 부경대학교 인문사회과학연구소 2015 인문사회과학연구 Vol.16 No.2

이 연구는 생협복지를 실천하는 구체적인 사례를 분석하면서, 국가와 시장이 아닌 사회적 경제 조직이 사회서비스를 제공할 수 있는 가능성과 그 효용성을 논의하였다. 생협복지는 지역의 다양한 조직과 연계하고 주민들의 적극적인 참여를 바탕으로 다양한 생활 서비스를 제공함으로써 공적 영역과 시장 영역의 복지제도가 놓치고 있는 일상의 사회적 돌봄을 실천하는 것을 의미한다. 이 연구는 단일 사례로서 서울 마포의 울림두레생협 복지활동을 분석대상으로 하였다. 사례는 지역 속에서 주민과 함께 성장하고 다양한 돌봄 사업을 하는 지역생협으로서의 특성을 가장 잘 보여주었다. 사례분석 결과 생협의 복지활동에는 세 가지 특징이 있었다. 첫째, 주민참여와 자치활동으로 복지 민주주의의 가능성이 높아졌다, 울림두레생협은 조합원들의 참 여와 민주적 의사결정을 최고의 가치로 여기고 있었고, 이를 실현하기 위한 다양한 제도적 장치를 가지고 있었다. 둘째, 상호부조와 연대를 통해 사회적 돌봄의 관계망 을 넓혀가고 있었다. 이로써 공공복지나 시장복지에서 해결하기 어려운 돌봄 사각지대를 해소하고 있었다. 셋째, 다양한 지역복지 커뮤니티가 구성되고, 이들의 활동으로 지역사회가 변화하고 있었다. 일공동체를 통해 지역 생산과 소비가 선순환하는 구조를 만들고, 지역주민이 함께하는 사업체와의 연대를 통해 사회적 경제를 실현하고 있었다. 그러나 생협복지의 확산과 지속에는 여전히 많은 문제가 있었다. 이에 대해 이 연구에서는 세 가지 발전전략을 제시하였다. 첫째, 맞춤화 전략으로써 조합원 및 지역주민의 다양한 특성을 반영하여 복지를 증진할 수 있도록 생애주기별 맞춤형 복지 실천을 제안하였다. 둘째, 전문화 전략으로써 조합원과 생협조직을 연결할 수 있는 조합원 활동가를 양성할 것과, 생협의 전문적 활동을 보완해줄 수 있는 조합원 전문 가를 양성할 것을 제안하였다. 셋째, 보다 폭넓은 지역사회복지실현을 위해 지역사회 전반에 존재하는 다양한 자원을 동원하고 연대하는 전략을 제안하였다. This study discussed a possibility that social service could be provided by social enterprise, not nation nor market, and its effectiveness, with analyzing a specific case of consumer cooperative welfare practice. Consumer cooperative welfare means the practice of everyday social care which a welfare system in public realm and market realm fails to notice, by providing various living services on the basis of connection with various organizations and residents' active participation. This study analyzed the welfare activities of WoollimDure Consumer Cooperative in Mapo, Seoul, as a single case. The case most clearly showed the characteristics of regional consumer cooperative that grew with residents inside the region and carried out various care projects. According to the results of case analysis, there were 3 characteristics in the welfare activities of consumer cooperative. First, a possibility of welfare democracy increased owing to residents' participation and self-help activities. WoollimDure Consumer Cooperative regarded members' participation and democratic decision-making as the highest value, and had various institutional arrangements so as to realize that. Second, social care networks were being expanded through mutual aid and solidarity. This removed the blind spot of care, with which the problem was difficult to solve in public welfare and market welfare. Third, various regional welfare communities were formed. And owing to their activities, regional communities were changing. Through work community, a virtuous circle of regional production and consumption was formed. And through solidarity with business that local residents join, social economy was being realized. However, there are still many problems spreading and sustaining consumer cooperative welfare. This study presents 3 development strategies against those. First, the practice of customized welfare according to life cycle was suggested so that welfare could be promoted by reflecting members and residents' various characteristics, as individualization strategy. Second, we suggested training an active member who can connect member to consumer cooperative organization, and training a specialist member who can complement the specialized activities of consumer cooperative, as specialization strategy. Third, we suggested a strategy of solidarity and mobilization of various resources that exist in the community at large in order to realize wider range of community welfare.