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      • 李고의 學術思想 : 李고的 學術思想

        吳洙亭 漢陽大學校 人文科學大學 1986 人文論叢 Vol.12 No.-

        本稿試論唐代古文家兼學術家李?(고) 的文學論·復性論和反佛論等, 目的在了解李?(고)繼承且擴展由韓愈唱導的古文運動的情形, 以及李?(고)特出的觀點, 分爲緖言· 文學論 · 復性論 · 反佛論 · 從道論 · 結語, 共六節. 李習之文公, 他出生於中唐時代, 與韓愈同時, 也是韓門第一弟子.他深受韓 愈的蒸陶, 反對六朝以來華而無實的騈風, 注意到文章和敎化關係, 儒道作爲根幹, 繼承韓愈 '文以載道', 主張 '仁義之辭', 與韓愈?(병) 無差異. 在創作理論方面, 池超過韓愈 '陳言務去' 而擴展到 '創意和造言', 只是實際創作不如韓愈. 有人說李?(고) 偏重道而文章平易, 皇甫湜?(편) 重文而流於艱?( ), 但李前期較重道而後期?()重文, 實在兼重道文, 且 '創意和造言' 來達成平易的特點. 有關文學論的文章有 <雜說>·<寄從弟正辭書> ·<答皇甫提書> · <答朱載言書>等篇. 他的識力更表現在三篇 <復性書>. 他以 《易》《禮記《孟子》等儒家經典爲根據, 發揮有關性情的儒家心學, 來對抗佛敎心學, 有力的支持韓愈所發勳的儒毒復興運動, 啓發宋儒也不少. 因此唐代儒學史上?(병)稱韓 ·李. 他提到佛敎所引起的社會經濟上的間題, 以及佛法對於人情的損傷面反對佛敎,有關反佛的文章有 <去拂齋論>·<與本使楊尙書請停率修寺觀錢狀)等篇. 他擇寫 <復性書>的目的也在反對佛敎, 發揚儒道. 他?(영)有 <百官行狀奏 ) ·<從道論> · <命解> 等篇, 發表獨特的有價値的見解. 總而言之, 李?(고)是中唐時代突出的學術家, 古文運動的支持者兼儒道守護者. 我們不可忽視他在唐時代文學史上和在學術史上極高的位.

      • KCI등재

        30년간 숙성시킨 된장의 품질 특성 및 항산화 활성 평가

        수정,이혜진,이수정,정승환,성낙주 경상대학교 농업생명과학연구원 2014 농업생명과학연구 Vol.48 No.4

        This study was performed to investigate changes in quality and antioxidants of traditionalKorean Doenjang according to ripening periods. Doenjang used in this experiments wasproduced at Agricultural Association Corporation of Chung Hack Do Won, and then testedsamples were ripened for 150 days, 2, 25 and 30 years. Moisture content was graduallydecreased during ripening of Doenjang. Content of ash was increased during its ripening, and content of crude protein was abundant in Doenjang ripened for 30 years. The color values oflightness were significantly decreased during its ripening, while values of yellow and red werehigher in 25 and 30 years ripening samples than control. The mineral content was the highestin 30 years ripening Doenjang. Total content of composition amino acid was higher in 2, 25and 30 years ripening samples. Glutamic acid which was the precursor of γ-amino-butyric acid(GABA) was significantly decreased during its ripening, GABA content for the control was 0.41mg/100 g, while 2 years ripening sample contained 0.49 mg/100 g. Furthermore, 25 and 30years ripening sample contained 20.60 and 30.57 mg/100 g, respectively, and a 30 years oldspecimen had 74.6 times more GABA than control. Four kinds of organic acid were analyzedoxalic acid content among them was dominant with about 82.59~217.06 mg/g. Content oforganic acid such as lactic acid and acetic acid were fluctuated during its ripening, and maleicacid and succinic acid were not detected in all tested sample. The contents of daidzin, glycitinand malonyldaidzin were increased, while those of daidzein and genistein were decreased, butthose of genistin and malonylgenistin were fluctuated along with ripening periods. The contentof total phenolics was the highest in 30 years ripening sample. Antioxidant activities such asDPPH and ABTS radical scavenging and reducing power did not show noticeable differencesdepending on ripening periods of Doenjang. Therefore, the 30 years ripening Doenjang is to beappropriate for marketing products, in terms of the biological activity. 장기간 숙성시킨 된장의 품질 특성을 평가하기 위하여 25년 및 30년간 숙성시킨 된장을 150일(대조구)과 2년간 숙성시킨 된장을 비교하여 품질특성 및 항산화 활성을 시험하였다. 150일간 숙성시킨 된장을 대조구로 하여 분석한 결과 수분 함량은 숙성 기간이 증가함에 따라 점차 감소하였으며, 회분 함량은 숙성기간의 경과에 따라 유의적으로 증가하였다. 조단백질 함량은 30년간 숙성시킨 된장에서 유의적으로 높게 나타났다. 된장의 명도는 대조구에서 가장 높았고 숙성 기간이 경과함에 따라 점차 감소되었으며 황색도와 적색도는 25년 및 30년간 숙성시킨 된장에서 유의적으로 높았다. 된장 중 무기물의 총함량은 대조구가 3125.10 mg/100 g으로 가장 낮았으며, 30년간 숙성시킨 된장이 6451.95 mg/100 g으로 가장 많았다. 구성아미노산의 총 함량은 3848.34~4382.06 mg/100 g의 범위였다. 총 유리아미노산의 함량은 대조구에서 가장 높았으며, 다음으로 30년, 25년 및 2년간 숙성시킨 된장의 순이었다. 기능성 생리활성 물질인 γ-amino-butyric acid (GABA)의 함량은 장기간 숙성시킬수록 그 함량이 증가하여 30년간 숙성시킨 된장에서는 무려 30.57 mg/100 g으로 검출되어 대조구(0.41 mg/100 g)보다 약74.6배나 증가하였다. 유기산의 분석 결과 oxalic acid의 함량이 약 82.59~217.06 mg/g으로 가장 많았으며 lactic acid와 acetic acid의 함량은 숙성 기간에 따른 변화는 나타나지 않았으며, maleic acid와 succinic acid는 모든 시료에서 검출되지 않았다. 이소플라본의 함량은 daidzein과 genistein이 숙성 기간이 길어짐에 따라 그 함량은 감소하였으며, glycitin 및 malonyldaidzin의 함량은 숙성시킬수록증가하였다. DPPH, ABTS 라디칼 소거활성 및 FRAP에 의한 환원력에 의한 된장의 항산화 활성은 숙성 기간에 따라 대차를 보이지 않았으며, 150일간 숙성시킨 된장과 유사한 활성을 보였다. 따라서 25년및 30년간 숙성시킨 된장을 150일, 2년간 숙성시킨 된장과 비교할 때 품질면에서 손색이 없었으며 식품에 적합한 것으로 평가되었으며, 장기간 숙성시킨 된장의 연구와 개발이 계속해서 이루어진다면 한단계 더 높은 기능성 전통 발효식품으로 이용될 수 있을 것이라 생각된다.

      • KCI등재

        Design, Fabrication, and Application of a Microfluidic Device for Investigating Physical Stress-Induced Behavior in Yeast and Microalgae

        수정,임기택,김장호,류현렬,정종훈,전누리 한국농업기계학회 2014 바이오시스템공학 Vol.39 No.3

        Purpose: The development of an efficient in vitro cell culture device to process various cells would represent a majormilestone in biological science and engineering. However, the current conventional macro-scale in vitro cell cultureplatforms are limited in their capacity for detailed analysis and determination of cellular behavior in complex environments. This paper describes a microfluidic-based culture device that allows accurate control of parameters of physical cues such aspressure. Methods: A microfluidic device, as a model microbioreactor, was designed and fabricated to culture Saccharomycescerevisiae and Chlamydomonas reinhardtii under various conditions of physical pressure stimulus. This device wascompatible with live-cell imaging and allowed quantitative analysis of physical cue-induced behavior in yeast andmicroalgae. Results: A simple microfluidic-based in vitro cell culture device containing a cell culture channel and an airchannel was developed to investigate physical pressure stress-induced behavior in yeasts and microalgae. The shapes ofSaccharomyces cerevisiae and Chlamydomonas reinhardtii could be controlled under compressive stress. The lipid productionby Chlamydomonas reinhardtii was significantly enhanced by compressive stress in the microfluidic device when comparedto cells cultured without compressive stress. Conclusions: This microfluidic-based in vitro cell culture device can be used asa tool for quantitative analysis of cellular behavior under complex physical and chemical conditions.

      • KCI등재

        Effects of Water Activity on Pigments in Dried Laver (Porphyra) during Storage

        수정,신말식,이경애,최은옥 한국식품과학회 2013 Food Science and Biotechnology Vol.22 No.6

        Degradation of chlorophyll, carotenoids, andphycobilins in dried laver (Porphyra) was studied duringstorage at water activities (Aw) of 0.112, 0.316, 0.484,0.747, or 0.890 in the dark at 40oC for 15 days. Thechlorophyll, carotenoid, and phycobilin contents weredetermined using HPLC and spectrophotometry. Thechorophyll a, carotenoid, and phycobilin contents in driedlaver decreased with storage time in the dark, anddegradation was increased and accelerated as the Aw valueincreased. Among pigments, chlorophyll a was degraded atthe highest rate, and differences in degradation rates amongpigments became greater as the Aw value increased. Phycoerythrin was more stable than phycocyanin. Changesin the Aw value affected degradation of phycocyanin andchlorophyll more than phycoerythrin or carotenoids. Control of the Aw value can improve the color stability ofdried laver in the dark.

      • KCI등재

        Light Effects on Lipid Oxidation, Antioxidants, and Pigments in Dried Laver (Porphyra) during Storage

        수정,Edwald Lee,최은옥 한국식품과학회 2014 Food Science and Biotechnology Vol.23 No.3

        Effects of light on lipid oxidation, antioxidants,and pigments in dried laver (Porphyra) were studiedduring storage at 40oC and at a water activity of 0.75 for 15days. Lipid oxidation was evaluated by measuring peroxidevalue (POV) and conjugated dienoic acid (CDA) contents,whereas fatty acid composition was analyzed by gaschromatography. Contents of polyphenols, tocopherols,porphyran, chlorophylls, carotenoids, and phycobilins werealso monitored. The POV and CDA contents of dried laverlipids increased during storage, whereas contents ofeicosapentaenoic acid, pigments, and antioxidants decreased. Light accelerated lipid oxidation as well as degradation ofantioxidants and pigments during storage of dried laver. Chlorophyll and polyphenols were the most rapidly degradedamong all pigments and antioxidants, respectively, andlight had the strongest effect on their degradation. Lipidoxidation of dried laver due to light was highly dependenton the content of α-tocopherol among all minor compounds.

      • KCI등재

        Effect of Polypyrrole Coating on Li Powder Anode for Lithium-Sulfur Secondary Batteries

        수정,윤우영 한국정밀공학회 2014 International Journal of Precision Engineering and Vol. No.

        Polyppyrole (PPy)-coated Li powders were prepared via planetary milling techniques and used as an anode material for rechargeableLithium-Sulfur (Li-S) batteries. The PPy-coated Li powder anode was analyzed by scanning electron microscopy (SEM), transmissionelectron microscopy (TEM) and electrochemical impedance spectroscopy (EIS). The PPy coating on the Li powder provided theprotection layer to inhibit the electrochemical reaction between the Li powder anode and dissolved lithium polysulfide anions in theelectrolyte, which minimized the overcharge and reduced the capacity fading. The charge-discharge process of the PPy-coated Lipowder anode cell showed a capacity of 878 mAh g-1 at 1st cycle and 500 mAh g-1 after 50th cycles.

      • KCI등재

        공급사슬성과와 정보기술역량 간의 관계에 관한 탐색적 분석

        수정,광식,Oh, Soojung,Oh, Kwangsik 한국데이터정보과학회 2014 한국데이터정보과학회지 Vol.25 No.4

        최근 많은 기업들이 공급사슬에 정보통신기술 (information and communication technology; ICT)을 도입하고 있다. 그러나 기존의 연구들은 정보통신기술이 공급사슬에 미치는 영향과 관련하여 명확한 결론을 제시하지는 못하고 있다. 이에 본 연구는 기업에서 정보통신기술을 활용하는 역량의 관점을 제시하고 이를 네 가지 집단으로 분류하여 공급사슬성과에 미치는 영향을 살펴보고자 한다. ICT 역량을 구체적으로 협력과 변화 역량으로 구분하여 이를 토대로 집단을 네 가지 유형으로 분류하고, 공급사슬성과의 각 요인에 대하여 집단 간에 차이가 있는지 ANOVA분석과 사후검정을 실시하였다. 분석결과 정보통신기술의 역량이 모두 높은 집단이 공급사슬성과 중 특히 통합과 유연성 성과에서 가장 높은 수준인 것으로 나타났다. 통합과 유연성 변수의 세부문항에 대하여 집단 간 차이를 분석함으로써 기업 실무자에게 보다 정확하고 세세한 정보를 제공하고자 하였다. Recently, many firms have introduced information and communication technology (ICT) into supply chain. However, existing studies have not yet insisted definite conclusion with respect to ICT impact on supply chain. Thus, this study subdivides supply chain performance which previous researchers have studied comprehensively while suggesting perspective of the use of firm's ICT capabilities. We classify ICT capabilities into four types of group and then analyze the difference between groups regarding each factor of supply chain performance by ANOVA analysis and Tukey method. As a result of analysis, the group in which all ICT capabilities are high shows the highest level of integration and flexibility performance among supply chain performances. On the other hand, the group in which all ICT capabilities are low presents the lowest level of integration and flexibility performance. We also provide more precise and specific information with practitioners by analyzing the difference between groups with regard to detailed measurements on integration and flexibility variables.

      • KCI등재

        함초와 발효 함초 추출물의 화장품 소재로서 생리활성 비교연구

        수정,모정희 한국피부과학연구원 2011 대한피부미용학회지 Vol.9 No.4

        This study aims to discover a possibility that ethanol and methanol extracts of dried and fermented Salicornia herbacea can be used as materials of cosmetics through bioactivity such as cytotoxicity, whitening activity, and antioxidation. As a result of the cytotoxicity which was carried targeting Raw 264.7 cell leave, it was discovered that there was no cytoxicity from the four extracts as cell survival rates of all the extracts were 106~133%. When the tyrosinase inhibitory activity for whitening was measured, all the four extracts had high inhibitory activity according to concentration and the inhibitory activity of ethanol extract of fermented S. herbacea was the highest. When DPPH radical scavenging effect for antioxidation was measured, the scavenging effect of ethanol extract of fermented S. herbacea was the highest. In particular, in comparison with antioxidative effect of BHT SC50 of 1.29 ㎎/㎖, that of fermented S. herbacea was similar, which indicates that it has a relatively high antioxidative effect. Therefore, as it was demonstrated that S. herbacea, methanol and ethanol extracts of fermented S. herbacea had no toxicity as materials of cosmetics and of the four specimens, ethanol extract of fermented S. herbacea has the highest in cytotoxicity, tyrosinase inhibitory effect and DPPH radical scavenging effect, its possibility to be used as a material of fermented cosmetics was confirmed.

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