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RISS 인기검색어
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- 저자 : 윤보경 ( Bo Kyung Youn ) (검색결과 3 건)
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김경숙(Kim Kyung Sook),윤보경(Youn Bo Kyung) 한국체육교육학회 1997 한국체육교육학회지 Vol.2 No.1
The purpose of this study is to cornet the specific actions and improve sport ski4s as well as use the effective educational experiences during the teaching - learning, for which students sport actions were recorded by video, played individually or in groups, and individual athletic skills were objectively observed. To achieve the aims above, the researcher selected at random two classes for girls, who are in the frist grade in J middle school in Kyo-yang city, Kyoung Ki Do. learning contents are gymnastic exercise for young people. After experimental group made up of 41 subjects was taken by video camera, the researcher trained them to observe their own actions objectively, showed good sport conduct and encouraged them to correct their specific actions. On the other hand, the control group of 37 subjects listend to teacher`s verbal explanation to correct their actions without observing their actions by video To measure consistent scorer reliability, two colleagues as well as the researcher observed VTR together during the pre - test. The researcher also kept measuring reliability during the mid - test . To check the observation of individual sport action, the picture and interpret of gymnastic exercise for ydung people were use. To see if the teaching method through VTR influenced the action during the researcher observed the differences of sport actions during the pre - test, and the mid - test, and post - test according to the the incensing times of the test in experimental group and control group for the each group. The collected data were analyzed and the results are as follows. 1. Differences in the level of action during the pre -test, the mid -test, and the post -test . 1-1. The mean of action 1., 2, 3, 4, 5, 9, 10 was high in the experimental group during the pre-test but the rest of the actions except actional didn`t show the meaningful differences within P$lt;.05 level. In control group the mien of action 3, 6, 7, 8 was higher than in experimental group but only action 6, 7showed the meaningful differences within P$lt;.05 level All of the actions from 1 to 10 didn`t show the meaningful differences within P$lt;.05 level From this it came to be clear that the experiment was mad under thesame conditions. 1-2. During the mid-test the experimental group corrected action 1,8 very well and control group correct action10 very well. The mean of all of the action from 1 to 10 was higher in the experimental group than in the control group. The experimental group showed the meaningful differences within p$lt;.05 level. Therefore it might be conclouded that correction of actions the experimental group better than in the control group. 1-3. During the post-test the mean of action 1.2.3.4.5.7.8 was higher in the experimental getup than the control group. The experimental group showed the meaningful differences within p$lt;.05 level. According to the experiment, the conclusion was may be reached, that the experimental group whose specific actions were corrected by VTR improved sport actions much more than the control group whose specific action were corrected just by teacher`s explanation without watching VTR. 2. Differences of actions according the increasing times of the test 2-1. Every action of the experimental group showed the significant effect effect during the pretest - the mid test - the post . Especially action 1.5.6 showed the meaningful effect during the experiment between mid-test and the post-test. this means the effect the experiment was remarkable. And the whore mean of the actions was increased meaningfully during the mid-test and the post-test. 2-2. The control group had the increased effect during the pre-test the mid-test the post-test but action 3 showed the meaningful effect during the pre-test and the post test without any meaningful differences between the pre-test end the mid-test the means of action 5.7.8 was high cording to the increasing times but the mean didn`t make any meaningful differ
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김동희 ( Dong Hee Kim ),이수연 ( Soo Yeon Lee ),김남경 ( Nam Kyung Kim ),윤보경 ( Bo Kyung Youn ),정다솜 ( Da Som Jung ),최은영 ( Eun Young Choi ),홍소리 ( So Ri Hong ),윤지영 ( Ji Young Yoon ),강명화 ( Myung Hwa Kang ),이진영 ( J 한국응용생명화학회(구 한국농화학회) 2011 Journal of Applied Biological Chemistry (J. Appl. Vol.54 No.4
구기자, 건조구기엽, 생구기엽 추출물의 미백효과를 검증하였다. Tyrosinase 저해활성 측정결과 건조구기엽 에탄올추출물 500 μg/mL에서 44%의 저해활성을 나타내었으며, melanoma cell (B16F10)에서의 melanin 생합성 저해율 측정결과 건조구기엽 에탄올 추출물 50 μg/mL에서 14%의 저해효과를 나타내었다. 구기자, 건조구기엽, 생구기엽 추출물을 처리한 B16F10군 에서는 tyrosinase protein의 발현이 처리하지 않은 군보다 감소 하였다. 특히, 건조구기엽 추출물의 경우 tyrosinase의 단백질 발현량을 많이 저해하였다. 결과적으로 건조구기엽 추출물의 미백활성이 가장 우수하였으며, 식품 및 화장품의 기능성 소재로 이용이 가능할 것으로 판단된다. The objective of the present study was to evaluate the skin whitening effect of the extracts, Lycii fructus (LF), Dry-L. foilum (DLF) and Fresh-L. folium (FLF). Tyrosinase inhibition activities was 44% in DLF ethanol extracts at a 500 μg/mL. When the tyrosinase activities in B16F10 murine melanoma cell were tested, the activities in DLF ethanol extracts was 14% at a 50 μg/mL concentration. The protein expression of microphthalmia-associated transcription factor, tyrosinase related protein 1 (TRP-1), TRP-2, and tyrosinase, which are all melanin related factors, showed that LF, DLF and FLF extracts inhibited the protein bio-synthesis in B16F10 melanoma cell. Especially the DLF extract showed greater decrease of protein expressions. Results indicate that the DLF extract tested in the present study had skin whitening activity and can be used as a function a ingredients for food and cosmetic compositions.
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