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이윤이 충남대학교 의과대학 지역사회의학연구소 1994 충남의대잡지 Vol.21 No.2
This study was undertaken for the clinical analysis and evaluation on 48 patients with incompetent internal os of the cervix. who were admitted and treated at the CNUH from August, 1991 to August, 1994 1. The incidence of incompetent internal os of the cervix is approximately once in every 67 deliveries and the most frequent age incidence was 30 to 34 age group 2. The most significant contributory factor in 21 of 48 cases was considered to be the previous history of the traumatic induced abortion 3. McDonald operation was performed in 48 cases and resulted in success rate of 70.8% 4. The mayor causes of perinatal loss were SPROM (64.3%) and preterm labor(28.6%) 5. The fetal salvage rate by suture material is 72.7% (mersilene tape) and 66.7% (silk). 6. The delivery methods after operation were via vaginal route in 35 cases (72.9%) and abdominal route in 13 cases.(27.1%)
Platelet-Activating Factor(PAF)가 과립막세포의 Progesterone생성에 미치는 영향
이윤이,강길전 충남대학교 의과대학 지역사회의학연구소 1989 충남의대잡지 Vol.16 No.2
In spite of a great deal of iteratures concerning PAF, there is no informatin on its rols on the granulosa cell. Consequently, this study was designed to explore the possible role of PAF on progesterone(P_4) secretion of the granulosa cell using the porcine granulosa cell culture. PAF enhanced P_4 secretion in dose-dependent way in medium supplemented with fetal calf serum. However, its role was not effective in culture system supplemented with bovine serum albumin. In another experiments, a great difference appears between P_4 secretion by granulosa cells from large follicles and from small of medium follicles, suggesting an influence of the stage of granulosa cell differentiation. In conclusion, the present study suggests that P_4 secretion from the cultured porcine granulosa cells is dependent upon PAF. Thus it appears likely that PAF as well as other auto-and paracrine factors modulates the P_4 secretion.
이윤이 충남대학교 의과대학 지역사회의학연구소 1995 충남의대잡지 Vol.22 No.2
We studied 123 women with uncomplicated pregnancies of 41 or more weeks' gestation. The pregnant women with a ripe cervix over Bisphop score 7 (Induction group I, 20 cases) was done with oxytocin induction. The pregnant women with an unripe cervix Bisphop score <7, there were two alternatives in management. The one group (Induction group II, 24 cases) was administer prostaglandin vaginal tablet for cervical ripening and proceeded with oxytoion induction. The other group (Monitoring group, 69 cases) was to initiate serial antepartam surveillance white waiting spontaneous labor and/or spontaneous cervical ripening. Serial antepartum surveillance consisted of nonstress test, biophysical profile (BBP) anti assessments of amnionic fluid index by twice weekly. Among 54 women in the induction group I and II, 16 (29.6%) resulted in a higher rate of cesarean section, as compared with 15 (21.7%) of 69 women in the monitoring group. But the rate of cesarean section because of fetal distress in the monitoring group was higher than the induction group I and II (8.6% versus 5.6%) This difference was not satistically significant. Thick meconiam in amnianic fluil and meconiam aspiration syndrome in the monitoring group was significantly higher than the induction group I and II (p <0.05). They occured after 43 weeks' gestation. Therefore, in postterm pregnancy, when the cervix was ripe, induction of labor at 41 weeks' gestation was appropriate. when the cervix was unripe, serial antepartum surveillance should be initiated soon after 41 weeks' gestation and prompt intervention should occur if antepartum surveiuance was abnormal. This group must be delivered until 43 weeks' gestation.
스포츠 브랜드 NFT 활용 사례 연구: 나이키를 중심으로
이윤이,김승인 차세대컨버전스정보서비스학회 2023 디지털예술공학멀티미디어논문지 Vol.10 No.4
본 연구는 글로벌 브랜드 중 나이키의 NFT 활용 최신 사례를 수집하고 분석한 연구이다. 웹 3.0 환경으로 변화하면서 기업들은 기존의 IP에 NFT를 결합한 전략으로 새로운 시대의 플랫폼과 커뮤니티를 선도하려고 노력하고 있다. 특히 나이키는 디지털 수집품을 전문적으로 개발 및 유통하는 스타트업 RTFKT를 인수하면서 장기적이며 일관성 있는 프로젝트를 선보이고 있다. 먼저 RTFKT가 기존에 진행하던 핵심 프로젝트인 사이버 스니커즈 및 AR필터와 PFP(ProFile Picture) NFT인 클론엑스(Clone X)의 특성을 고찰하고, 인수된 이후에 나이키의 IP와 결합하여 전개된 NFT 프로젝트들을 상세히 분석했다. 클론엑스 보유자들에게 전달된 MNLTH(Monolith), DNA형질에 따라 수천 가지의 스킨으로 변화할 수 있는 덩크 제너시스, 후드티에 프린트된 QR코드를 찍어 기계 날개가 달린 모습으로 촬영할 수 있는 AR 제너시스 후디, 그리고 마지막으로 NFT와 같은 컬러의 실물 스니커즈를 보내주는 크립토킥스 iRL의 발행 방식, 제공 대상, 다음 프로젝트와의 연결 요소를 살펴보았다. 결과적으로 사전 구매 조건과 자산 가치 유지가 모든 프로젝트에서 공통으로 나타나는 전략임을 발견할 수 있었다. This study collects and analyzes the latest cases of Nike's use of NFTs among global brands. With the shift to a Web 3.0 environment, companies are making efforts to lead the platform and community of the new era with strategies that combine NFTs with existing IP. In particular, Nike is presenting a long-term and consistent project by acquiring RTFKT, a startup that specializes in developing and distributing digital collectibles. First, it was reviewed the attributes of RTFKT's existing core projects; cyber sneakers, AR filters, and a PFP(ProFile Picture) NFT, Clone X. NFT projects developed combining Nike's IP after the acquistion were also reviewed and analyzed in detail. MNLTH (Monolith) delivered to Clone X holders, Dunk Genesis that can change into thousands of skins according to DNA traits, AR Genesis hoodie that can be appeared with mechanical wings by scanning the QR code printed on the hoodie; and finally, the way of minting for Cryptokicks iRL, which sends physical sneakers of the same color as the NFT, were reviewed in terms of the subject of collection, and the elements of connection with the next project. As a result, it was found that pre-purchase conditions and asset value preservation were common strategies for all projects.
정상임신중 경질초음파단층법에 의한 자궁경관장의 변화에 관한 검토
이윤이 충남대학교 의과대학 지역사회의학연구소 1992 충남의대잡지 Vol.19 No.2
We measured the cervical length of 160 normal pregnant women between 8 and 36 weeks' gestation by vaginal ultrasonography. Normal pregnant women were assigned to one of five groups according to gestational age at the time of the measurements. Cervical length was 34.7±1.3(group 1=8 to 13 weeks), 36.5±2.5(group 2=14 to 20 weeks), 41.7±2.3(group 3=21 to 25 weeks), 38.4±1.8(group 4=26 to 31 weeks) and 32.7±2.0 mm(group 5=32 to 36 weeks). Cervical length of group 1 to 5 was significantly longer than that of control group(nonpregnant women). We found that cervical length increases progressively up to 21 to 25 weeks' gestation and then decreases significantly at 32 through 36 weeks' gestation. Cervical length was normalized within postpartum 1 month. Normogram of cervical length throughout pregnancy was established. This may aid early diagnosis and management of preterm labor and cervical incompetance.