http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
이보형(BoHyoung Lee),차성운(Sung Woon Cha),윤재동(JaeDong. Yoon) 대한기계학회 2003 대한기계학회 춘추학술대회 Vol.2003 No.11
In a foaming process of microcellular plastics (MCPs) with a batch process, amorphous plastics and crystalline<br/> plastics have different characteristics for a foaming temperature. It is known that a foaming of amorphous plastics<br/> occurs at the temperature above a glass transition temperature, however, it is discovered that crystalline plastics do not<br/> take place above a glass transition temperature without exception, and even though the foaming occurs, it does not in all<br/> the range. In this research, to measure foaming temperature of crystalline polymer, a foaming experiment was<br/> performed using one of the typical crystalline polymer, polypropylene. To analyze whether the foaming occurs both at<br/> amorphous and crystalline fields, SEM was applied
서장경으로부터 분리한 Homosyringaldehyde의 뇌신경세포 보호 활성
원진배(Jin Bae Weon),이보형(Bohyoung Lee),윤보라(Bo-Ra Yun),이지우(Jiwoo Lee),마충제(Choong Je Ma) 대한약학회 2012 약학회지 Vol.56 No.5
Homosyringaldehyde was isolated and identified from the 80% methanol extract of roots of Cynanchum paniculatum. C. paniculatum has been widely used for the treatment of various diseases such as neurasthenia, insomnia, dysmenorrheal and toothache. This compound exerted significant neuroprotective activities against glutamate-induced neurotoxicity in hippocampal HT22 cell line by 37.53% (at the concentration of 100 μM). We investigated mode of action of this compound. Homosyringaldehyde (100 μM) significantly decreased the ROS level and Ca2+ concentration in the oxidative stress induced HT22 cells by oxidative glutamate toxicity. Thus, our results suggest that homosyringaldehyde significantly protect HT22 cells against glutamate-induced oxidative stress, via antioxidative activities. As the results, we suggest that homosyringaldehyde may be useful in the treatment of neurogenerative disorders.
증숙 과정을 통한 소청룡탕의 뇌신경세포 보호 활성 변화에 관한 연구
원진배(Jin Bae Weon),양혜진(Hye Jin Yang),이보형(Bohyoung Lee),윤보라(Bo-Ra Yun),마진열(Jin Yeul Ma),마충제(Choong Je Ma) 대한약학회 2011 약학회지 Vol.55 No.6
So Cheong Ryong Tang (SCRT) has been used as a traditional herbal medicine for the treatment of the bronchial asthma. In this study, the effect of steaming process on changes in 11 major compounds (homogentisic acid, ephedrine HCl, paeoniflorin, cinnamic acid, cinnam aldehyde, glycyrrhizin, 6-gingerol, schizandrin, methyleugenol, gomisin A and gomisin N) content and neuroprotective activity of SCRT were evaluated. Major compound content was slightly different with steaming produce. The contents of paeoniflorin, cinnamic acid, cinnam aldehyde, 6-gingerol and methyleugenol were decreased and homogentisic acid, ephedrine HCl, glycyrrhizin, schizandrin and gomisin A were increased by steaming process. The neuroprotective activity of steaming SCRT was determined in mouse hippocampal HT22 cells by MTT assay. As a result, neuroprotective activity of a steaming SCRT was higher than that of a non steaming SCRT. This study demonstrated that neuroprotective activity of SCRT can be improved through steaming process.