민중경제론

배연수 한국국민윤리학회 1986 倫理硏究 Vol.23 No.2

Effect of treatment temperature on mechanical properties of silk textiles made with silk/polyurethane core-spun yarn

배연수,엄인철 한국잠사학회 2016 International Journal of Industrial Entomology Vol.33 No.2

Silk has been used extensively in textile applications because of its good luster and feel. However, the low elongation and elastic recovery of silk has limited its use in a wider variety of textile applications. In this study, silk textile samples were made with a highly twisted silk/polyurethane core-spun yarn. They were immersed in water and dried at different temperatures, and the effect of treatment temperature on the mechanical properties of the silk textile was examined. It was found that the water temperature strongly affected the morphology and mechanical properties of the silk textile, whereas the drying temperature did not. As the water temperature was increased, the weft silk yarn became tangled and the interval between warp yarns decreased, resulting in shrinkage of the silk textile. When the silk textile was immersed in water at high temperature (i.e., 100°C), the elongation of the textile increased eight-fold as compared to an untreated silk textile. The maximum elastic recovery ratio of the silk textile was 96.7%.

Effect of degumming on structure and mechanical properties of silk textile made with silk/polyurethane core-spun yarn

배연수,김춘우,배도규,엄인철 한국잠사학회 2016 International Journal of Industrial Entomology Vol.33 No.2

Although silk textile shows excellent performance when used in clothing over a long period, its limited elongation and elasticity have restricted its extension to other textile and non-textile applications. In the present study, silk textile was produced using silk/ polyurethane core-spun yarn and degummed to enhance its elongation and elasticity. The effects of degumming on the structure and mechanical properties of the silk textile were examined. Scanning electron microscopy observation revealed that the silk filaments became finer and more flexible with degumming, resulting in increased tangling of weft yarns and a highly shrunk textile structure in the weft direction. Although the strength of the degummed silk textile was decreased, its elongation greatly increased by 383% (a 16- fold increase) because of the degumming treatment. In particular, the elasticity of the silk textile was greatly improved. The silk textile exhibited ~30% reduction in the elongation after the second extension; however, the elongation almost did not change after 18 additional extension–recovery tests.

-83년도 국가예산의 편성과 집행- 그 효율성을 기대한다

裵然秀 세계평화교수협의회 1982 廣場 Vol.112 No.-

습윤처리 및 열압착처리가 기계적으로 제작된 천연 실크 부직포의 구조 및 성질에 주는 영향

배연수,엄인철,Bae, Yeon Su,Um, In Chul 한국섬유공학회 2018 한국섬유공학회지 Vol.55 No.6

This study investigates the effects of wet and hot press treatments on the structure and mechanical properties of natural silk non-woven fabric under two post-treatment conditions: (a) hot press without wet treatment and (b) hot press with wet treatment. With respect to the fabric structure, a hot press without wet treatment does not alter the arrangement of silk filaments, while a hot press with wet treatment causes wrinkles in the fabric, and further bending of the silk filaments as the temperature is increased. With respect to the fabric mechanical properties, there is no improvement observed in the first condition, while the tensile strength of the fabric remarkably increases in the second condition when the hot press temperature is increased up to $200^{\circ}C$, indicating the crucial swelling of sericin by wet treatment to bind silk filaments. However, at a hot press temperature reaching $230^{\circ}C$, tensile strength decreases due to the molecular degradation of sericin. Moreover, hot press significantly decreases the porosity of the natural silk non-woven fabric with the wet treatment further accelerating the effect.

인삼이 Digoxin에 의한 가토의 심부정맥에 미치는 영향

배연수,김중영 慶北大學校 醫科大學 1986 慶北醫大誌 Vol.27 No.4

인삼이 digoxin의 심부정맥에 미치는 영향을 관하기 위하여 체중 2.5㎏ 내외의 웅성가토를 urethane으로 마취시키고 인삼 사포닌 100, 400 또는 800㎎/㎏를 정맥내에 투여하여 심전도, 혈압, 심박동 및 호흡율의 변화를 관찰하고 이를 전처치한 후 digoxin 0.75㎎/㎏을 투여하였을 때의 변화를 비교하여 다음과 같은 결과를 얻었다. 인삼사포닌 400 또는 800㎎/㎏을 투여하였을 때 호흡율이 증가하였고 인삼 사포닌의 투여량에 따라 투여초기에 일시적인 혈압하강작용이 나타났으며 800㎎/㎏에서 심박동수는 경미하게 감소되었다. 그러나 심전도상의 변화는 나타내지 아니하였다. Digoxin 0.75㎎/㎏ 투여로서 호흡율은 현저히 증가하여 50분간 지속되었고, 투여초기에 일시적으로 수축기 및 확장기혈압이 모두 하강하였으며 이와 동시에 심박완서작용이 나타났으나 곧 회복되었다. 이 용량에서 심실이단맥과 단병소성심실조기수축 및 동성서맥 등이 야기되었는데 대체로 digoxin 투여후 20분 이내에 간헐적으로 나타났다. 이들 작용은 상기한 인삼 사포닌의 각 용량을 전치하였을 경우에 영향을 받는 것 같았다. 즉 인삼을 전처치하므로서 digoxin 투여로서 야기되는 일시적인 수축기혈압하강작용이 인삼의 양의 증가에 따라 억제되고, 심박완서작용이 오래 지속되어지며 심실부정맥이 발생되는 시간 분포가 분산되어지는 경향이 있었다. 특히 0.75㎎/㎏ digoxin 투여로서 발현되지 않던 심실성삼단맥과 다병소성심실조기수축 및 방실접합성리듬이 야기되었다. 이상의 결과로 미루어 보아 인삼의 전처치로 digoxin에 의한 심부정맥이 현저하게 악화되지는 아니하나 심부정맥이 발현되는 시간의 분포가 넓어지고 다병소성심실조기수축과 방실접합성리듬이 야기되어지며 연속성심실조기수축과 심박완서의 발생빈도가 증가되어지는 경향은 인삼투여로서 digoxin의 심부정맥에 나쁜 영향을 끼칠 가능성이 있음을 시사한다고 보겠다. This experiment was undertaken to study the effect of ginseng saponin extracted from panax ginseng on electrocardiograpihc changes induced by administration of toxic dose of digoxin. The changes of arterial blood pressure, heart and respiratory rate were also observed. The experimental animals were male rabbits weighing about 2.5㎏ anesthetized with urethane. Ginseng saponin(100, 400 and 800 ㎎/㎏) and digoxin (0.75㎎/㎏) were injected through ear vein. The results are summerized as follows: In control group, the injection of 800 ㎎/㎏ ginseng saponin did not produce elec trocardiographic changes, but transient lowering of systolic and diastolic blood pressure were observed in early stage after injection with dose of 100, 400 and 800 ㎎/㎏, and also there noted a weak bradycardia with dose of 800 ㎎/㎏, and an increase in respiratory rate with dose of 400 and 800 ㎎/㎏ of ginseng saponin. In control group, 5 to 20 minutes after the injection of 0.75㎎/㎏ digoxin produced ventricular bigeminy, unifocal premature ventricular contraction, consecutive premature ventricular contraction and sinus bradycardia, and there noted transient lowering of sytolic and diastolic blood pressure in early stage, a slight decrease in heart rate, and a marked increase in respiratory rate. In experimental group pretreated with dose of 100, 400, and 800 ㎎/㎏ ginseng saponin, 0.75 ㎎/㎏ digoxin had a tendency of producing multifocal premature ventricular contraction, A-V junctional rhythm and ventricular trigeminy, which were not observed in control group. In addition, pretreatment with ginseng saponin increased the incidence of consecutive premature ventricular contraction and sinus bradycardia after injection of digoxin. However, the incidence of ventricular bigeminy was not affected. The appearance time of digoxin-induced cardiac arrhythmias was widely dispersed from 5 to 50 minutes. In rabbits pretreated with ginseng saponin, the degree of lowering of systolic blood pressure caused by digoxin injection was affected by ginseng saponin administration, but that of diastolic pressure was not affected. The duration of bradycardia induced by digoxin was more prolonged by ginseng saponin pretreatment. With these results, it is suggested that ginseng saponin has some adverse effects on digoxin-induced cardiac arrhythmias.

남북한 경제발전의 비교

배연수 경북대학교 평화문제연구소 1989 평화연구 Vol.14 No.-

從屬理論에 關한 硏究 : 序說的 考察

裵然秀 嶺南大學校社會科學硏究所 1984 社會科學硏究 Vol.4 No.1

인삼이 Digoxin에 의한 가토의 심부정맥에 미치는 영향

배연수,김중영 慶北大學校 醫科大學 1986 慶北醫大雜誌 Vol.27 No.4

선거경제의 후유증과 그 대책의 수립

배연수 세계평화교수협의회 1987 廣場 Vol.171 No.-