지하공간에서 배경휘도에 따른 유도등 인지효과 분석

손종영(Son, Jong-Yeong),이수호(Lee, Soo-Ho),전규엽(Jeon, Gyu-Yeob),홍원화(Hong, Won-Hwa) 대한건축학회 2013 대한건축학회논문집 Vol.29 No.7

In the case of Daegu subway arson in 2003, it was found out that the evacuation system could not play its own role in the dense smoke and blackout during the fire. Due to the dense cloud of smoke and blackout, the people could not easily find the way out. Proper emergency light plan considered cognitive characteristics of evacuees is set up in such places, if so it will be a great help for evacuation. The information obtained through visual sense induces behaviors intuitively. So, effective evacuee guidance is implemented by installing various evacuation guidance devices (emergency lights and luminous egress guide-lines). In connection with this topic, Jeon Gyu-yeob(2011) carried out an on-the-spot experiment focused on changes in visual perceptional evacuation environment and evacuation abilities. And on the basis of the results, he carried out a study on changes in evacuation behaviors through visual perceptional restriction. However, studies on characteristics of visual perception that has an effect on behaviors of evacuees and evacuation behaviors are not sufficient. Therefore this study examined the effect of background luminance of the emergency light induced to recognize the emergency light. Therefore, to produce a device for adjusting the brightness experiment, this study simulated evacuation experiments were performed for 136 people. The value of the result indicated by seek time of emergency light, evacuation time and emergency light cognition distance.

호두의 지질함량 및 지방산조성

전종애;조규성 한경대학교 2007 論文集 Vol.39 No.-

This study investigated the compositions of lipid and fatty acid in walnuts. Four kinds of walnuts from different country of origin (South Korea, North Korea, China and America) were used. General components of walnut were 62%~72% of lipids, 16.7%~19.5% of protein, 2.5%~11.1% of carbohydrates depending on country of origin. Free and bound lipids were extracted from walnuts using Soxhlet extraction method. Contents of free and bound lipids were 63.53% and 6.51% for Korea walnut, 67.30% and 6.85% for North Korea walnut, 65.39% and 6.77% for China walnut, and 66.22% and 4.7% for America walnut, respectively. Neutral lipid, glycolipid and phospholipid were eluted from both free and bound lipid using silicic acid column chromatography(SACC). Contents of neutral lipid, glycolipid and phospholipid were 87.7~91.5%, 6.4~10.1% and 1.4~3.1% in free lipids, and 2.4~22.4%, 3.6~14.3% and 73.9~87.2% in bound lipids, respectively. Fatty acid components of free lipid were linoleic acid(60.5~63.4%), oleic acid(10.9~19.4%) and others (17~28%). Thus, unsaturated fatty acid in free acid lipid was more than 90%. Fatty acid components in bound lipid were 100% of unsaturated fatty acid as linoleic acid for Korea and China walnut, while 63% of unsaturated fatty acid for North Korea and America walnut. As a result, lipid and fatty acid compositions in walnut were little different depending on country of origin, but walnut had higher contents of unsaturated fatty acid and critical fatty acids than other foods. Walnut tissue was observed by tabletop microscope. Photographs of four kinds of walnut were all much the same in walnut tissue. Therefore, walnut seems to be a good food for prevention of disease such as arteriosclerosis and hypertension

치주인대세포 배양에서 estrogen이 growth hormone receptor의 발현유도에 미치는 영향

홍성규,전영미,김정기 대한치과교정학회 2000 대한치과교정학회지 Vol.30 No.4

본 실험은 사람의 치주인대세포에서 에스트로겐과 growth hormone(GH)이 상호 어떠한 작용을 하는지를 규명하는 것이 목적이다. 교정치료를 받고자 내원한 환자중에서 건강한 20대 여자환자들의 상하악 제1소구치를 발거하여, 치근의 중간 1/3부위에서 긁어모은 치주인대 조직을 배양하여 치주인대세포를 얻었다. 사람의 치주인대세포의 분열증식에 대한 17β-estradiol과 hGH의 효과를 평가하고, 치주인대세포에 17β-estradiol을 전처리한 후 치주인대세포의 분열증식에 미치는 hGH의 효과 변화를 평가하였으며, 치주인대세포에 17β-estradiol을 전처리 하였을 경우 치주인대세포에서 hGH receptor의 발현 양상의 변화를 평가하여 다음과 같은 결론을 얻었다. 1.17β-estradiol이나 human growth hormone의 단독처리는 사람의 치주인대세포의 분열증식에 큰 영향을 주지 않는다. 2.17β-estradiol 10-12M로 전처리한 후 hGH를 투여한 경우 hGH의 농도에 관계없이 사람의 치주인대세포의 분열증식을 증가시킨다. 3.사람의 치주인대세포에는 hGH receptor가 없으나, 17β-estradiol 10-12M로 6시간 이상 처리하면 hGH receptor가 발현된다. 4.hGH이 사람의 치주인대세포의 분열증식에 미치는 효과는 hGH receptor의 발현과 관련이 있으며, 17β-estradiol의 전처리가 치주인대세포에서의 hGH receptor의 발현에 기여함으로써 hGH이 치주인대세포에 작용할 수 있도록 해준다. The present studies were performed to investigate the interaction of 17β -estradiol and human growth hormone(hGH) on the proliferation of human periodontal ligament(hPDL) cell. The independent effects of 17β-estradiol and hGH on hPDL cell proliferation were investigated and the effects of hGH on hPDL cell proliferation after 17β-estradiol pre-treatment were also investigated. Lastly, the change of hGH receptor expression in hPDL cell after 17β-estradiol pre-treatment were investigated. The obtained results were as follows; 1.The treatment of 17β-estradiol or hGH had no significant effects on hPDL cell proliferation. 2.After pre-treatment of 17β-estradiol, hGH stimulated the proliferation of the hPDL cell, regardless of hHG concentration. 3.Although there was not hGH receptor in the hPDL cell, hGH receptors were expressed in hPDL cell after more than 6 hours pre-treatment of 17β-estradiol. 4.The effect of hGH on hPDL cell proliferation was related to the hGH receptor expression. 17β -estradiol pre-treatment contributed to the hGH effects on the hPDL cell by stimulating hGHR expression.

전기 화상 환자의 수술 전 평가,고압손상과 저압손상 비교

황정원,이정기,전영태,강종만,오용석,노규정,김현철 대한정맥마취학회 2004 정맥마취 Vol.8 No.1

신축학교 실내공기질이 초등학생들의 인지기능에 미치는 영향

김태섭,김선주,박시영,전만중,김규태,김창윤,정종학,백성옥,사공준 대한산업의학회 2007 대한직업환경의학회지 Vol.19 No.1

목적: 신축초등학교와 대조학교를 선정하여 교실 내 포름알데히드와 TVOCs를 측정하고 컴퓨터 신경행동검사를 이용하여 실내공기 오염물질이 학생들의 인지기능에 미치는 영향을 평가하였다. 방법: 신축초등학교 5학년 71명을 실내공기 오염물질 노출군으로 하고, 개교한지 12년째인 대구시의 일개 초등학교 5학년 2학급 63명을 대조군으로 하여 실내공기 오염물질농도 측정 및 컴퓨터 신경행동검사를 실시하였다. 결과: 신축학교에서 의도적으로 창문을 개방한 학급에서 1교시 포름알데히드 농도는 34.6 ㎍/㎥, 4교시에는 27.3 ㎍/㎥, 창문을 개방하지 않은 학급에서 1교시 80.2 ㎍/㎥, 4교시 127.1 ㎍/㎥, 대조학교에서는 2학급 각각 1교시에 12.6 ㎍/㎥, 7.5 ㎍/㎥, 4교시에 19.8 ㎍/㎥, 25.2 ㎍/㎥였다. TVOCs의 경우 신축학교의 의도적으로 창문을 개방한 학급에서 1교시에 농도는 487.2 ㎍/㎥, 4교시에 428.2 ㎍/㎥, 창문을 개방하지 않은 학급에서 1 교시에 농도는 1,283.5 ㎍/㎥, 4교시에 1,715.4 ㎍/㎥, 대조학교의 경우 2학급에서 각각 1교시에 농도는 240.9 ㎍/㎥, 150.8 ㎍/㎥, 4교시에 농도는 371.9 ㎍/㎥, 448.0 ㎍/㎥였다. 부호숫자 짝짓기의 평균반응시간은 대조학급이 1교시에 2,585 msec에서 4교시에 2,459 msec으로 감소한 반면 신축학교의 창문을 의도적으로 개방한 학급은 2,343 msec에서 2,510 msec으로, 평소대로 수업한 학급은 2,340 msec에서 2,563 msec으로 반응시간이 각각 167 msec, 223 msec 증가하였다. 1교시의 부호숫자 짝짓기 의 반응시간을 100%로 했을 때 창문을 의도적으로 개방 한 학급은 4교시에 5.9% 증가하였고(p<0.01), 평소대로 수업한 학급은8.3% 증가하였다(p<0.01). 반면에 대조학급은 4교시에 5.0% 감소하였다(p<0.01). 결론: 향후 학교의 실내공기질의 안전성 평가는 샘플링 된 공기의 오염수준의 측정뿐만 아니라 학생들의 건강영향도 함께 고려되는 것이 바람직할 것이다. Objectives: Most studies on the indoor air quality of newly built schools have focused only on the number of schools exceeding a standard or on subjective symptoms, such as sneezing, irritated eyes and an irritated nose. However, there has been no report on how poor indoor air quality affects children's academic performance. This study evaluated the effects of indoor air quality on the neurobehavioral performance of elementary school children. Methods: This study measured the indoor air pollutants and compared children's performance, using a computerized neurobehavioral test, between a newly built and a 12-year-old school. In addition, a questionnaire was administered regarding the indoor air quality related symptoms of children in a newly built and a 12-year-old school. Results: In the newly built school, the formaldehyde levels in the 1^(st) and 4^(th) classes with an open window were 34.6 and 27.3 μg/㎥, respectively. The levels in the 1^(st) and 4^(th) classes with the window closed were 80.2 and 127.1 μg/㎥, respectively. In the 12-year-old school, the formaldehyde levels in 1^(st) and 4^(th) class with open and closed window were 12.6 and 7.5 μg/㎥, and 19.8 and 25.2 μg/㎥, respectively. With respect to total volatile organic compounds, the levels in the 1^(st) and 4^(th) classes with the window open in the newly built school were 87.2 and 428.2 μg/㎥, respectively. In the 1^(st) and 4^(th) classes with the window closed, the total volatile organic compounds were 1,283.5 and 1,715.4 μg/㎥, respectively. In the 12-year-old school, the total volatile organic compounds were 240.9 and 150.8 μg/㎥, and 371.9 and 448.0 μg/㎥ in the 1^(st) and 4^(th) classes, respectively. In the case of a newly built school, the performance of the students in the neurobehavioral test in the 4^(th) class with the window closed was 8.3% lower than for those in the 1^(st) class with the window closed, but was only 5.9% lower when the windows were open. There was a statistical significant difference in the total numbers of symptoms between the two schools. Conclusions: These results suggest a proper evaluation of the indoor air quality within schools is required into both the level of contamination and the health effects of these contaminants toward children.

Anti-Selective Dihydroxylation Reactions of Monosubstituted and (E)-Ester Conjugated Allylic Amines by Bulky Alkyl Groups

Jeon, Jong-Ho,Kim, So-Hee,Lee, Jong-Hyup,Oh, Joon-Seok,Park, Doh-Yeon,Kim, Young-Gyu Korean Chemical Society 2009 Bulletin of the Korean Chemical Society Vol.30 No.5

The $O_sO_4$-catalyzed dihydroxylations of a monosubstituted allylic amine and $\gamma-amino-\alpha,\;\beta-unsaturated$ (E)-esters with bulky alkyl groups showed a high anti-selectivity. Since the acyclic conformation of N-acyloxy protected allylic amines was efficiently controlled by a bulky t-Bu or OBO ester group, the anti diastereoselectivity of >12.5:1 was obtained without applying a chiral reagent. The synthetic utility of the present method was demonstrated by a stereoselective and efficient synthesis of an $\alpha$-glucosidase inhibitor 15 from commercially available N-Cbz-L-serine 6 in 11 steps and 31% yield.

수박 시설재배시 관비용 유기농액비의 적정시비량 구명

전종옥(Jong Ok Jeon),박재호(Jae Ho Park),이광재(Guang Jae Lee),홍의연(Eui Yon Hong),송인규(In Gyu Song),주선종(Seon Jong Joo) 한국원예학회 2011 한국원예학회 학술발표요지 Vol.2011 No.5

고속여과공정을 이용한 도심지역비점오염원 처리특성에 관한 연구

전종규 ( Jong Gyu Jeon ),강용태 ( Yong Tae Kang ),송근관 ( Kune Kan Song ),조용현 ( Yong Hyun Cho ),한상윤 ( Sang Yun Han ) 한국수처리학회 2007 한국수처리학회지 Vol.15 No.4

Lipase와 유기용매를 이용한 Castor Oil의 가수분해

전규종(Gyu-Jong Jeon),허병기(Byung-Ki Hur),양지원(Ji-Won Yang) 한국생물공학회 2000 KSBB Journal Vol.14 No.6

Clinical Outcomes of Intrascleral Fixation of Intraocular Lens Compared to Ciliary Sulcus Implantation and Transscleral Fixation

Eun Gyu Yoon(Eun Gyu Yoon),Youngsub Eom(Youngsub Eom),Minji Woo(Minji Woo),Hyun Sun Jeon(Hyun Sun Jeon),Seong-Jae Kim(Seong-Jae Kim),Jong Suk Song(Jong Suk Song),Hyo Myung Kim(Hyo Myung Kim) 대한안과학회 2023 Korean Journal of Ophthalmology Vol.37 No.2

Purpose: To compare the clinical outcomes of intrascleral fixation of the three-piece intraocular lenses (IOLs) 2.5 mm posteriorto the limbus with ciliary sulcus implantation and transscleral fixation 2.5 mm posterior to the limbus. Methods: Sixty-five eyes of 65 patients who underwent ciliary sulcus implantation or transscleral or intrascleral fixation ofthe AMO Sensar AR40e IOL were retrospectively reviewed. The postoperative refractive prediction error, back-calculatedeffective lens position (ELP), corrected distance visual acuity (CDVA), and postoperative residual cylinder were compared. Results: There were significant differences in the median (interquartile range) postoperative refractive prediction error (diopters[D]) among the three groups (p < 0.001): for ciliary sulcus implantation (33 eyes), −0.89 D (−1.21 to −0.56 D); for transscleralfixation (10 eyes), −0.40 D (−0.78 to −0.22 D); and for intrascleral fixation (22 eyes), 0.01 D (−0.28 to 0.34 D). Significantdifferences (p < 0.001) were observed in the median back-calculated ELP: for ciliary sulcus implantation, 4.35 mm (3.95 to4.55 mm); for transscleral fixation, 4.51 mm (4.34 to 4.76 mm); and for intrascleral fixation, 4.90 mm (4.56 to 5.35 mm). Therewere no differences in the median postoperative CDVA (0, 0.10, and 0 logarithm of the minimum angle of resolution, respectively;p = 0.083) and the residual cylinder (−0.75, −1.50, and −0.63 D, respectively; p = 0.074) among three groups. Conclusions: Intrascleral fixation showed no myopic shift and the most posterior lens position, while ciliary sulcus implantationinduced the greatest myopic shift and the most anterior lens position. However, there was no significant difference in thepostoperative CDVA or astigmatism among the eyes with different IOL insertion methods, demonstrating good IOL stabilityand vision outcomes.