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Poly ( vinyl sulfone ) - Li 계 고분자 전해질의 전기적 특성
박수길,박종은,이홍기,손원근,임기조,이주성 ( Soo Gil Park,Jong Eun Park,Hong Ki Lee,Won Gun Son,Chang Jin Lee,Kee Joe Lim,Ju Sung Lee ) 한국공업화학회 1997 응용화학 Vol.1 No.1
Polymer solid electrolytes have been interested in polymer secondary battery system because of it`s many advantages such as energy density, light weight, wide range of operation temperature, low cost and easy handling. In this study we used polyvinylsulfate, LiClO₄, and LiPF_6 to apply polymer lithium battery. The crystallinity of PVS decreased with the addition of lithium salts and plasticizer, especially LiClO₄ and PC showed more effectiye than LiPF_6 and EC. TGA of polymer electrolyte increased with lithuim salt concentration whereas melting temperature(Tm) decreased less than 46℃.
苦蔘 추출물이 접촉피부염이 유발된 생쥐의 피부에 미치는 영향
김형우 ( Hyung Woo Kim ),류정현 ( Jeong Hyun Ryu ),조수지 ( Su Zy Jo ),천원주 ( Won Ju Cheon ),손용해 ( Yong Hae Son ),안원근 ( Won Gun An ),조수인 ( Su In Cho ) 대한본초학회 2013 大韓本草學會誌 Vol.28 No.6
Objectives: The dried root of Sophora flavescens Aiton have been used to treat patient with skin diseases such as eczema in Eastern countries. S. flavescens can clear away heat and dry dampness and purge sthenic-fire from the liver and gallbladder. Recently, anti-allergic effect of S. flavescens has been reported. However, the effect on skin condition of contact dermatitis still remains unknown. Thus, the purpose of this study is to evaluate the efficacy of S. flavescens on contact dermatitis. Methods : In order to investigate the effects of S. flavescens (methanol extract of S. flavescens, MESR) on skin condition, the contact dermatitis was induced in mice skin by using 1-fluoro-2,4-dinitrofluorobenzene (DNFB). As the effective endpoints, skin thickness, skin weight, histopathological change were checked. In addition, effects on skin lesion, body weight and spleen/body weight ratio were also investigated. Results : Topical application of MESR (500 ㎍/day) lowered skin thickness (P < 0.05) and skin weight (P < 0.05), respectively. MESR-treated group showed diminished spongiosis and immune cell infiltration in skin tissues compared to those of non-treated control group. The inhibition of skin lesions was also observed in MESR-treated group. In addition, MESR did not affect body weight gain and spleen / body weight ratio in contrast with those in dexamethasone-treated group. Conclusion : These data suggest that Sophorae Radix could improve skin lesion of contact dermatitis. This indicates the possibility for Sophorae Radix to be used to patients with skin diseases such as contact dermatitis.