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DCSP-GTAW에 의한 고력 Al합금의 고온균열감수성에 대한 연구
하려선,정병호,박화순,Ha Ryeo-Sun,Jung Byong-Ho,Park Hwa-Soon 대한용접접합학회 2004 대한용접·접합학회지 Vol.22 No.5
The tendency and degree of hot cracking of high strength 5083, 6N01 and 7N01 Al alloy welds by using DCSP-GTAW through modified Varestraint test and autogenous butt welding were investigated. In hot cracking test, 6N01 alloy showed the highest susceptibility to hot cracking in the weld metal and HAZ. Cracking susceptibilities generally increased with increase of solidification temperature range of the base metal and bead penetration-to-width ratio of the weld metal. The cracks in welds of the alloys vertically formed to solid-liquid interface and propagated along with columnar grain boundaries. The fracture facets of cracks showed the typical morphology of solidification crack observed as dendritic structures. Especially, in 6N01 alloy, liquation cracks which were due to elements of Si, Fe and Mg also observed in HAZ near fusion boundary. In butt welding of different Al alloys, the bead crack was mainly occurred in the welds of 6N01, 7N01 and other Al alloys together with 6N01 or 7N01. In the butt welds of 7N01, it was found that the component of Cu had an effect on the higher susceptibility to the hot cracking.
Kim, Sanghwa,Lee, Ah Young,Kim, Hyeon-Jeong,Hong, Seong-Ho,Go, Ryeo-Eun,Choi, Kyung-Chul,Kang, Kyung-Sun,Cho, Myung-Haing Elsevier 2017 Biochemical and biophysical research communication Vol.494 No.3
<P><B>Abstract</B></P> <P>A large amount of fructose intake along with smoking is associated with increased incidence of diseases linked to metabolic syndrome. More research is necessary to understand the complex mechanism that ultimately results in metabolic syndrome and the effect, if any, of high fructose dietary intake and smoking on individual health. In this study, we investigated changes in ER-Golgi network and disturbance to secretion of adipokines induced by cigarette smoking (CS) and excess fructose intake and their contribution to the disruption of metabolic homeostasis. We used high fructose-induced metabolic disorder mice model by feeding them with high fructose diet for 8 weeks. For CS exposure experiment, these mice were exposed to CS for 28 days according to OECD guideline 412. Our results clearly showed that the immune system was suppressed and ER stress was induced in mice with exposure to CS and fed with high fructose. Furthermore, their concentrations of adipokines including leptin and adiponectin were aberrant. Such alteration in secretion of adipokines could cause insulin resistance which may lead to the development of type 2 diabetes.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Cigarette smoke and fructose excess intake induce disruption to mechanisms involved in ROS generation and ER stress. </LI> <LI> Damage of cellular organelles induced by cigarette smoke and high fructose feeding affects inflammatory response and alters secretion of adipokines. </LI> <LI> Cigarette smoking and fructose excess intake are associated with metabolic syndrome. </LI> </UL> </P>
유아용 한방 스킨제어제품이 유아 피부의 보습 효능에 미치는 영향
이재근,이진상,박현진,조원준,김미려,하일도,김광중,황순이,지선영,Lee, Jae-Geun,Lee, Jin-Sang,Park, Hyun-Jin,Cho, Won-Joon,Kim, Mi-Ryeo,Ha, Il-Do,Kim, Kwang-Joong,Hwang, Sun-Yi,Jee, Seon-Young 대한한방안이비인후피부과학회 2008 한방안이비인후피부과학회지 Vol.21 No.3
Objectives : The aim of this study was conducted to test dry infant skin by external application with herbs in cosmetics. Methods : A total of 25 infants who visited Daegu Hanny Oriental Medical Center from March 5th, 2008 to May 18th, 2008 were included in this study. In this study, they were treated with the cosmetic products(body wash, rotion, cream) containing herbs. For 4 weaks skin moisture content was measured by corneometer ClVI825. And satisfaction after using body wash, rotion, cream was checked. Results : There were no significant differences on sex and age. Change of skin moisture content between before treatment and after treatment (2, 4 weeks) showed significant changes(p<0.05). Satisfaction after using body wash, rotion, cream was near good. Conclusions : Considering the above results, we have concluded that cosmetics containing herbs have the remarkable effect on infant skin mosturizing.