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ATO 복합사를 이용한 열차단 직물의 태양방사투과율 변화 연구
최주환,김대근,김선남,최동혁,이승걸,Choi, Joo Hwan,Kim, Dae Geun,Kim, Sun Nam,Choi, Dong Hyuk,Lee, Seung Geol 한국섬유공학회 2016 한국섬유공학회지 Vol.53 No.6
In this study, we manufactured ATO (antimony tin oxide) combined fibers to improve solar energy transmittance of sunscreen fabrics. The results indicate that the solar energy transmittance is improved with increasing sheath ratios and ATO content. We observed that the MS2-7W sample with 50:50 sheath/core ratio and 3 wt% of ATO content show the best performance. We also manufactured the sunscreen fabrics using the developed ATO combined fibers to check the performance of the thermal barrier. The results of the solar energy transmittance analysis show that an approximate 58% improvement was achieved for the thermal barrier over the commercial sunscreen fabric without any ATO content.
반코마이신 내성 장내구균 분리 환자에서 황색포도알균의 내성
김동욱,신선혜,김혜진,류선,이선희,장철훈,김영대,곽임수 대한감염학회 2004 감염과 화학요법 Vol.36 No.1
목적 : Vancomycin-resistant enterococci (VRE)로부터 S. aureus로의 vacomycin 내성 유전자의 전파는 오래전부터 예견되어져 왔으며 큰 걱정거리로 남아있다. 최근에 vanA 유전자를 가지고 있는 vancomycin-resistant S. aureus 2주가 미국에서 분리되었다. 이 연구의 목적은 VRE를 보균하고 있는 환자들에서 S. aureus 보균양상과 항균제 내성을 알아보는데 그 목적이 있다. 재료 및 방법 : 2001년 1월부터 2001년 12월까지 부산대학교병원에 입원하였던 환자들 중 임상검체에서 VRE가 분리된 환자 7명과 2001년 9월부터 12월까지 외과 중 환자실에 입원하였던 환자들 중 VRE 감시배양을 시행하였던 20명의 환자들을 대상으로 하였다. 환자들은 전비공, 액와부, 회음부, 직장에서 매주 면봉으로 검체를 채취하였다. 선별배지에서 검체를 배양하여 S. aureus를 분리하였고 원판 확산법을 이용하여 methicillin 감수성을 측정하였다. Broth microdilution 법으로 vancomycin MIC를 측정하였다. 결과 : 총 27명에서 73회의 방문과 292회의 배양이 시행되었으며 총 67주의 S. aureus가 분리되었다. 이중 64주(95.5%)가 methicillin 내성이었다. 전비공 MRSA 보균율은 VRE를 보균하고 있었던 환자는 19명 중 11명(58%)에서, VRE를 보균하지 않았던 환자는 8명 중 3명(37.5%)으로 VRE 보균자에서 보균율이 더 높았다. 총 64주의 MRSA의 vancomycin MIC의 분포는 0.5-2㎍/mL였으며 2㎍/mL를 초과하는 균주는 발견되지 않았다. 64주 중 vancomycin MIC가 1㎍/mL인 균주가 54주(84.4%)로 가장 많았으며 2㎍/mL 6주(9.4%), 0.5㎍/mL 4주(6.3%)의 순이었다. 결론 : VRE 환자에서 S. aureus의 보균율은 비보균자 보다 높았으며 분리된 균주들은 대부분 MRSA였다. VRSA 균주는 발견되지 않았다. Background : The transfer of vancomycin resistance from vancomycin-resistant enterococci (VRE) to Staphylococcus aureus has been predicted. The purpose of this study is to determine the prevalence and antibiotics resistance of S. aureus among patients colonized with VRE. Methods : Between January 2001 and December 2001, a prospective study was performed at Pusan National University Hospital on 27 patients. Surveillance swabs from nasal cavity, axilla, perineum, and rectum were obtained at weekly intervals. Methicillin susceptability of S. aureus was determined by oxacillin disk diffusion test and minimum inhibitory concentration (MIC) for vancomycin by microdilution broth test. Results : Total of 292 swab cultures were performed and 67 S. aureus isolates were collected. 64 isolates (95.5%) were resistant to methicillin. The prevalence of nasal MRSA carrier in 19 patients colonized with VRE was higher than that in 8 patients not colonized with VRE (58% vs. 37.5%). In 64 MRSA isolates, MIC (㎍/mL) for vancomycin ranged from 0.5 to 2. No isolates with MIC >2 ㎍/mL were observed. MIC of 1 ㎍/mL was shown (observed) in 54 isolates, 2 ㎍/mL in 6 isolates, and 0.5 ㎍/mL in 4 isolates. Conclusion : The prevalence of S. aureus with colonization of VRE is higher than that without colonization of VRE. Most of S. aureus isolates were resistant to methicillin. VRSA isolates were not observed.
생약추출물이 화상에 의한 면역체계의 변화에 미치는 영향
문선인, 김용대, 김헌 충북대학교 의과대학 충북대학교 의학연구소 2012 忠北醫大學術誌 Vol.22 No.1
연구목적: 본 연구는 당귀, 작약, 시호 등 다양한 약초 성분을 혼합하여 제조한 생약추출물이 화상에 의한 면역체계 변화에 어떤 영향을 주는지 알아보기 위하여 2도 화상을 입힌 랫드의 피부에 수차례 살 포하고 시간경과에 따른 혈액 내의 cytokine의 변화를 자연치유군과 비교해 평가하고자 하였다. 대상 및 방법: 4주령의 랫드를 15마리씩 양군에 배정하여 2도 화상을 유도한 후 한군은 자연치유 과 정을, 나머지 한 군은 생약추출물을 살포한 후 3일, 6일 그리고 12일 후 혈액 내의 IL-1β, IL-6, TNF-α 농도변화를 비교 평가하였다. 결과: 생약처리군의 경우는 주로 화상 초기에 IL-1β의 발현을 증가시켜 신속한 염증반응을 유도함으 로써 상처의 치유속도를 앞당겨 주는 것으로 생각되나 IL-6나 TNF-α의 발현에는 영향을 주지 않는 것으로 보인다. 결론: 본 연구의 결과로 생약추출물이 화상치유에 대한 효과가 어느 정도 있을 것으로 기대되지만 이 를 검증하기 위해서는 보다 대규모의 동물을 대상으로 다양한 종류의 면역지표를 이용한 추가연구를 진행할 필요가 있다.
딸기 ‘설향’ 육묘 시 모주의 묘소질과 정식 시기가 런너와 자묘의 생육에 미치는 영향
김대영, 김수, 최학순, 이선이, 허윤찬, 정승룡 忠北大學校 農業科學硏究所 2014 農業科學硏究 Vol.30 No.2
This study was conducted to investigate the effect of plantlet quality and transplanting time of mother plants on the growth of runner and daughter plants of strawberry (Fragaria×ananassa) ‘Seolhyang’ during nursery. Plantlet quality of mother plants is expected to be able to distinguish on the basis of crown diameter because crown diameter was highly correlated with fresh weight(r = 0.85), leaf area(r = 0.81), root weight(r = 0.75) and 1st primary roots(r = 0.73). Mother plants were transplanted based on the crown diameter (7~9 mm, 9~11 mm, 11~13 mm and 13~15 mm) in 15 March, 2012. Also, mother plants were transplanted in 15 March, 30 March, 15 April, 30 April and 15 May to investigate the best transplanting date. As a result, the number of daughter plants in the treatment 9~11 mm and 11~13 mm were 22.7 and 22.4 respectively at the end of July. But the number of daughter plants in the treatment of 7~9 mm and 13~15 mm reduced 26% and 16% respectively compared to the average number of the daughter plants in the treatment between 9 mm and 13 mm. The number of daughter plants in the treatment of 15 March, 15 April and 15 May were 20.2, 18.8 and 13.2 respectively at the end of July. Early time of transplanting was able to obtain the more daughter plants and improve the plantlet quality of daughter plants. Therefore, mother plants having crown diameter between 9 mm and 13 mm recommended to be transplanted until the end of March to obtain sufficient daughter plants and improve plantlet quality of daughter plants for producing strawberry fruits.
딸기 비가림 포트 육묘 시 자묘의 유인 위치가 생육에 미치는 영향
김대영,김승유,이희수,이선이 忠北大學校 農業科學硏究所 2015 農業科學硏究 Vol.31 No.2
This research was conducted to examine the effects on the growth in response to position of daughter plant of strawberry (Fragaria×ananassa)‘Seolhyang’ during the pot nursery in rain shelter. Mixture of soil mother material medium and rice hull(1:1, volume/volume) and commercial medium were used for nursery medium. Uniform daughter plants of about 2.5 expanded leaves were placed on the center and the side of pot and were investigated the growth characteristics of daughter plants after 60 days. As a result, daughter plants on the side of pot showed a tendency to increase total fresh weight, number of primary root, root weight, and crown diameter which is important characteristics of plantlet quality. Number of primary root, root weight, and crown diameter of daughter plants on the side of pot compared to those on the center of pot were increased to 3% and 11%, 7% and 41%, and 5%, respectively. As a result of analysis of root zone using the root analysis system, the total root length, root surface area and root volume of daughter plants on the side of pot compared to those on the center of pot were increased significantly. Those differences were greater in the commercial medium compared to the mixture of soil mother material medium and rice hull(1:1, volume/volume). Thus, it is expected to be improved the plantlet quality of daughter plants and increase the production ratio of high-quality plantlet when daughter plants were placed on the side of pot during the pot nursery in rain shelter.
선판일,이길호,심대성,성영훈,장대수 朝鮮大學校 附設 醫學硏究所 1992 The Medical Journal of Chosun University Vol.17 No.2
During the last 33 months period between June, 1989 and March, 1992 Extracorporeal shock wave lithotripsy (ESWL) was performed 275 patients with lower ureteral stone by Northgate SD-3 Litho-triptor. Stone localization was done by ultrasonography and diazepam & fentanyl citrate was used intravenously to control pain during procedure in all patients. The success rate of treatment (rate free of calculi plus that of clinically insignificant residual fragment) was 98.1% below lO㎜ in stone size, 95.7% in ll-20㎜, 87.5% in 21-30㎜, 50% over 31㎜ and total mean success rate was 96.7%. Among the ESWL-failed 9 cases, ureterolithotomy was done in 5 cases, ureterorenoscopy in 2 cases and ston basket in 2 cases. Complications after ESWL were transient hematuria 100%, flank pain 7.3% and fever 1.8% and treated conservatively. Extracorporeal shock wave lithotripsy monotherapy with the Northgate SD-3 lithotriptor was considered to be effective and safe procedure for the initial treatment of lower ureteral stone.