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        검색결과 87

        61.
        2018.05 서비스 종료(열람 제한)
        Background : Atractylodes japonica koidz. (AJ) and Atractylodes macrocephala koidz. (AM) belong to Atractylodes genus (Asteraceae) and their rhizomes are used as traditional medicine ‘Baek-chul’. The ‘Baek-chul’ is considered to be effective for the treatment of stomach disorder, virus, diuresis, inflammation, arthritis and Atractylenolide I, Atractylenolide II and Atractylenolide III are the major active ingredients of these. Previously, we developed 8 hybrid cultivars with disease resistance, high yielding ability and high active ingredients by interspecific hybridization between AJ and AM. In this study, growth characteristics of 8 hybrid cultivars were investigated in RDA experimental field. Methods and Results : Growth characteristics of 8 hybrid cultivars were investigated in RDA experimental field. Among these cultivars, ‘Sanwon’ had the highest fresh weight of rhizome (149.5 g/plant), followed by ‘Dachul’ (145.8 g/plant). Most of hybrid cultivars showed higher fresh weight than and AM (108.7 g/plant). In addition, active ingredients (Atractylenolide I, Atractylenolide Ⅱ and Atractylenolide Ⅲ) were investigated using HPLC. As a result, The sum of active ingredients were the highest in ‘Dachul’ (0.40 ㎎/g) that was 2 times higher than AM (0.22 ㎎/g). Conclusion : In this study, hybrid cultivars showed higher agronomic performance than AM. Particularly, ‘Dachul’ could be the superior cultivar with high atractylenolides as well as high yield ability.
        66.
        2017.06 KCI 등재 서비스 종료(열람 제한)
        The question of how and where adverbs are licensed has relatively been discussed less vigorously. It will be argued here that though the hierarchy suggested in Cinque(1999) reflects the cross-linguistic order of functional heads, it leaves room for a revision for the so-called sentential adverbs and the adverbs modifying NP/DP found in English and Korean. Based on the observations in Bogal-Allbritten(2014) and Lee(2008), the licensing relationship between the syntactic heads and adverbs suggested in Potsdam(1998) will be revised. Also, the hierarchy for adverbs suggested in 박(2000) will be slightly revised for the adverbs modifying NP/DP found in English and Korean.
        67.
        2017.05 서비스 종료(열람 제한)
        Backgoound : This study was conducted to evaluate the quality variation of Ixeris dentata on the antioxidant contents and antioxidant activities according to the different producing area. Methods and Results : The samples were extracted with 70 % EtOH and then analyzed for total flavonoid contents, polypenol contents, DPPH radical scavenging activity, and ABTS radical scavenging activity. Luteinol 7-O-β-D-glucoside, an index component of the Ixeris dentata, was analyzed by HPLC. The leafs of Ixeris dentata in Jinan had the highest concentration of polyphenols (23.91 ㎎/g), followed by Jinbu (22.63 ㎎/g) and Eumseong (21.36 ㎎/g). Flavonoid content was highest in Jinan (15.27 ㎎/g), but there was no significant difference between Jinbu (14.05 ㎎/g) and Eumseong (13.99 ㎎/g). The contents of luteinol 7-O-β-D-glucoside were confirmed in Jinan (0.68%), Jinbu (0.49%) and Eumseong (0.36%), respectively. Conclusion : The comparison of antioxidant contents and antioxidant activities of Ixeris dentata according to the different producing area, Jinan was had the highest concentration, followed by Jinbu and Eumseong. Our results showed that the content of luteoline-7-D-glucoside varied among the different producing area.
        68.
        2017.05 서비스 종료(열람 제한)
        Backgoound : This study was conducted to serve as a basis for the selection of superior lines by analyzing the content of antioxidant component and antioxidant activity in Schisandra chinensis Collections Methods and Results : In order to examine antioxidant component and antioxidant activity, 154 species of Schisandra chinensis from whole country were used. Antioxidant component was investigated by total flavonoid content and total phenolic content and antioxidant activity was evaluated by DPPH radical scavenging activity and ABTS radical scavenging activity. As a result, the total amounts of flavonoids was highest in SC-20 with 5.03 ㎎/g. However the content of polyphenols showed highest in SC-22 with 2.76 ㎎/g. In addition antioxidant activity results were also relatively high in SC-22. The IC50 value was 548 ㎍/㎖ in DPPH radical scavenging and 640 ㎍/㎖. in ABTS+ radical scavenging. Conclusion : As demand for high income crop has increased, new cultivar breeding is required to produce high quality Schisandra chinensis From this study, analyses of antioxidant component and antioxidant activity in collection can be used for new Schisandra chinensis breeding. Especially SC-22 can be superior lines with high antioxidant component and antioxidant activity.
        69.
        2016.09 KCI 등재 서비스 종료(열람 제한)
        The purpose of this paper is to analyze gerund construction on the basis of gradience which was proposed by Aarts (2007, 2008), comparing with previous studies such as HPSG (Head-Driven Phrase Structure Grammar) approach and WG (Word Grammar) approach under multiple default inheritance. This paper explores syntactic properties of gerunds which have both nominal and verbal nature. The nominal nature of gerunds concerns with external patterns to the gerunds, and the verbal nature of gerunds concerns with their internal patterns. Keeping these properties in mind, this paper examines the logic of multiple default inheritance which allows a single node to inherit from two supercategories, in this case from both noun and verb, and then points out some problems. The paper introduces an alternative analysis, that is, the gradience approach, and argues that English gerunds can be explained neatly by the notion of intersective gradience which makes use of the concept of convergence. Above all, this paper devises a gradient diagram on the basis of basic explanations, and ensures that this diagram can help students to understand confusing gerunds.
        70.
        2016.09 KCI 등재 서비스 종료(열람 제한)
        Hee-Jung Lee. 2016. An Analysis of English Gerund Construction on the Basis of Gradience. Studies in Modern Grammar 90, 45-67. The purpose of this paper is to analyze gerund construction on the basis of gradience which was proposed by Aarts (2007, 2008), comparing with previous studies such as HPSG (Head-Driven Phrase Structure Grammar) approach and WG (Word Grammar) approach under multiple default inheritance. This paper explores syntactic properties of gerunds which have both nominal and verbal nature. The nominal nature of gerunds concerns with external patterns to the gerunds, and the verbal nature of gerunds concerns with their internal patterns. Keeping these properties in mind, this paper examines the logic of multiple default inheritance which allows a single node to inherit from two supercategories, in this case from both noun and verb, and then points out some problems. The paper introduces an alternative analysis, that is, the gradience approach, and argues that English gerunds can be explained neatly by the notion of intersective gradience which makes use of the concept of convergence. Above all, this paper devises a gradient diagram on the basis of basic explanations, and ensures that this diagram can help students to understand confusing gerunds.
        71.
        2016.06 KCI 등재 서비스 종료(열람 제한)
        This paper aims to validate the argument that SpeechActPhrase shell structure is needed to explain some constructions with modal expressions in English and Korean. Specifically, some epistemic modal constructions in English and –keyss-, -ullay, -la, -ca, and -ma constructions in Korean, with their speaker/hearer oriented meaning, should be distinguished from root modal constructions in their structure. This paper also shows that simple syntactic hierarchy does not fully explains the scope relations between modal constituents and other tense/aspect constituents.
        74.
        2015.06 KCI 등재 서비스 종료(열람 제한)
        In this study, we tried to offer the possibility of White Hibiscus syriacus L. (WHS) flower extracts as a preven-tive and improving agent of osteoporosis that bone mass reduction is induced by an decrease of osteoblast involved in boneformation and increase of bone resorption by osteoclast activity. As a results, it was found to have antioxidant activity andcontain a flavonoid contents (47.74㎎/g) of the WHS flower. There was cytotoxicity at more than 250㎍/㎖ concentration ofWHS flower extract of RANKL-induced osteoclast in RAW264.7. There were no significant inhibited TRAP activity in theWHS leaf and stem. However, it was confirmed that it is significantly inhibited the differentiation activity of osteoclasts in 50and 100㎍/㎖ concentration of cells of stability levels of only WHS flower extracts (p<0.01). The WHS flower prominentlyinhibited RANKL-induced osteoclast differentiation activity by decreased calcitonin receptor and TRAP mRNA (p<0.01).These results indicate that of osteoclasts differentiation activity is inhibited by protection of oxidative stress due to the anti-oxidant activity of the WHS flower. Therefore, suggesting the WHS flower may be a presents the possibility as a preventiveand therapeutic agents for osteoporosis.
        75.
        2015.04 KCI 등재 서비스 종료(열람 제한)
        This study was carried out to evaluate the preventive effect of three forms of Korean ginseng roots (fresh, white and red) against bisphenol A (BPA) toxicity in mouse male germ cells (GC-2spd, TM3, TM4). ROS (reactive oxygen species) generation were measured by DCF-DA (2’,7’-dichlorohydrofluorescein diacetate) assay. Also, semi-quantitative reverse transcriptase polymerase chain reaction (RT-PCR) was performed to quantify the mRNA expression levels of apoptosis- related genes, Bax (pro-apoptotic gene) and Bcl2 (anti-apoptotic gene). ROS generation was increased by 50 μM BPA, but definitely decreased by treatment with Korean ginseng extracts (fresh, white and red) in mouse male germ cells. In especial, Korean fresh ginseng extract reduced significantly ROS production to normal control. In addition, Korean fresh and white ginseng extracts suppressed the apoptosis of mouse male germ cells by fine-tuning mRNA levels of apoptotic genes changed by BPA. In general, Korean fresh ginseng extract was more effective than white ginseng extract for reducing BPAinduced oxidative stress and apoptosis in mouse male germ cells. Therefore, Korean fresh and white ginseng may help to alleviate biphenol A toxicity in mouse male germ cells.
        77.
        2014.10 KCI 등재 서비스 종료(열람 제한)
        This study was designed to maximize extract yields of functional components in Angelica gigas Nakai by extrusion process. In addition, the optimizing condition of the extrusion process was established to increase the extraction of the functional components in A. gigas. The total polyphenol was increased by 40% compared to a control. And the optimizing condition was that the screw speed was 62.76 rpm, the amount of A. gigas powder was 34.79 kg/h, and the amount of water was 4.44 kg/h. The result of antioxidant activities of A. gigas extrusion, the inhibition of oxidization had the effect of 10.29 ~ 14.59% compared to a control. The content of decursin and decursinol angelate, which were index components, was 6.37%; it was increased by 16.64% compared to a control (5.31%) and showed a significantly difference (p < 0.05). And the optimizing condition was the screw speed 93.71 rpm, the amount of A. gigas powder was 28.67 kg/h, and the amount of water was 9.9 kg/h.
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