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        검색결과 219

        121.
        1990.04 KCI 등재 구독 인증기관 무료, 개인회원 유료
        본 실험은 혼파초지에서 봄철 1차 이용시기와 1차 이용후 재생기간에 따른 목초의 일당 건물생산량, 경엽분포비율, 일반성분함량 및 세포벽 구성물질 등에 미치는 영향을 구명하고자 1차 이용시기(주구)를 영양생장기(초장 25-30cm), 절간신장기(초장 40~50cm) 및 출수기(초장 60~70cm)로 하고 1차 이용후 재생기간(세구)을 20, 30 및 40일로 하여 1987년도와 1988년도 2개년에 걸쳐 실시하였다. 1차 이용시 일당생산량은 늦게 이용할수
        4,000원
        124.
        1989.04 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This experiment was carried out in order to know the changes in dry matter production of the 2nd cutting by the times of established pasture and its relation with morphological and structural characters of orchardgrass sward. Experimental pasture was esta
        4,000원
        125.
        1988.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        본 시험은 林間草地에서 연간 예측회수(3,4,5回)와 예취높이 (3,6,9cm)가 목초의 生育과 收量 및 초지地植生에 미치는 영향을 究明하여 임간초지의 생산량증대와 이용年限延長을 위한 기초자료를 얻고자 실시되었으며, 林間地의 조건은 南向인 소나무 지대로 選光程度는 30%였다. 연간 예취回數별 乾物收量은 4회 예취구(6097kg), 3회 예취구 (5953kg) > 5회 예취구 (5305kg/ha)순이였으나, 館料價植를 고려한 수량차이는 크지 않을 것으로
        4,000원
        126.
        1988.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This experiment was conducted to investigate the morphological and structual characters and the dry weight of plant (DW/pl.) concerned vegetational structure of orchardgrass pastures by the times of year, from 1 year to 7 year previous, 1986 through 1980,
        4,000원
        127.
        1988.12 구독 인증기관 무료, 개인회원 유료
        우리 나라 재래종중(在來種中) 내용성분(內容成分) 면(面)에서 바람직한 향끽미(香喫味) 물질(物質)을 함유(含有)하고 있는 것으로 알려진 향초(香草)를 대상(對象)으로 이식시기(移植時期)가 향끽미(香喫味) 물질(物質)에 미친 영향(影響)을 구명(究明)하여 얻어진 결과(結果)는 다음과 같다. 전(全)알카로이드 함량(含量)은 7월(月) 5일(日) 이식구(移植區)가 4.16%로 가장 높고 5월(月) 20일(日) 이식구(移植區)는 1.37%로 가장 낮았으며, 니코틴 함량(含量)은 전(全)알카로이드 함량(含量)과 같은 경향(傾向)을 보였다. 전당(全糖) 함량(含量)은 4월(月) 20일(日) 이식구(移植區)가 12%로 가장 높았고 이것보다 이식(移植)이 빠르거나 늦을 수록 감소(減少)되는 경향(傾向)이었다. 석유(石油)에텔추출물(抽出物)은 4월(月) 5일(日) 이식구(移植區)가 5.77%로 가장 높았고 이식시기(移植時期)가 늦을 수록 감소(減少)하였다. 전당(全糖) 석유(石油)에텔추출물(抽出物) 전질소(全窒素)는 4월(月) 20일(日) 이식구(移植區)에서 가장 높았으며 이식시기(移植時期)가 빠를 수록 지방산(脂肪酸), malic산(酸)과 citric산(酸) 함량(含量)은 감소(減少)되었다. 이식시기(移植時期)가 빠를 수록 2.3-methylbutanoic산(酸), 3-methylpentanoic산(酸)의 함량(含量)이 증가(增加)되었다.
        4,000원
        128.
        1988.08 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This experiment was conducted to investigate the morphological and structual characters and the dry weight of plant (DW/pl.) concerned vegetational structure of orchardgrass pastures by the times of year, from 1 year to 7 year previous, 1986 through 1980,
        4,000원
        129.
        1987.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The present work was designed to understand the mechanism of superovuiation and the cause of early embryo loss and Implantation failure in the superovulating immature female rats which were elaborated by a pituitary gland transplantation. A pituitary gland obtained from the orchidectomized rats was transplanted under the right kidney capsule of 28 day old female rats (PGT group) on the starting day of experiment which was designated as Day 2. The grafted pituitary glands were removed at 6h (RPGT 6h group), 12h (RPGT 12hgroup) and 24h (RPGT 24h group) after the transplantation. Control rats were treated with 41U PMSG on Day 2 (PMSG group). The estrous cycle and the levels of plasma progesterone and estradiol-17 were observed on Day 0, Day 5, respectively. The implantation sites, the weights of ovary and uterus, and the number of corpora lutea were examined in all group on Day 8. The resuft obtained were summarized as follows: 1. The percentages of the number of the rats in proestrus and estrus were 93.0%, 82.6%, 0%, 90.7% and 89.5% in PMSG, PGT, RPGT6h, RPGT12h and RPGT24h group, respectively. The synchronization of estrus cycle was dchieved in all groups. 2. The mating rates of each group were 80.2, 75.0, 0, 56.4, 57.8% in PMSG, PGT, RPGT6h, RPGT12h, RPGT24h group, respectively. 3. The numbers of copora lutea on Day 8 were 47.1 i 4.9, 18.1 0.5, 14.1 i 0.3 and 8.9 0.3 in PGT, RPGT24h, RPGTl2h and PMSG group, respectively. There were signIficantly difference between all groups (P<0.05). 4. The numbers of implantation sites (18.1 +- 4.0) in PGT group on Day 8 were higher than those of PMSG (8.5 2.5), RPGT 12h (9.8 i 0.2) and RPGT 24h group (10.8 i 0.2) (P<0.05). 5. The ovarlan weights in PGT (95.2 14.3mgIlOOg BW), RPGT 12h (51.7 0.6mgIlOOg BW), and RPGT24h (57.9 0.9mg/l00g 8W) groups were significantly higher than those of PMSG group (30.4 7.4mg/l00g BW) (P<0.05). 6. The uterine weights in PMSG (672.4 4.7mg/l00g 8W), and PGT (660.7 7.8mg/l00g BW) groupswere greater than those of RPGT 12h (403.0 1.lmg/lOOg BW) and RPGT 24h (490.1 0.9mg/l00g BW) group (P<0.05). 7. The plasma progesterone levels in PGT groups (15 lng/ml) on Day 5 were higher than those of PMSG (83ng/ml), RPGT 12h (S7ng/ml), RPGT24h (8lng/ml) group (P<0.05). 8. The plasma estradiol-17 levels in PMSG group (lBSpg/ml) on Day S were higher than those of RPGT 24h (l3pg/ml) group (P<0.05). But estradiol-17 levels in PGT and RPGT 12h group were too low to discuss.
        4,200원
        130.
        1987.08 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This study was carried out to investigate the effects of different cutting times at 0, 10 and 20 days after lodging on the percentage of dead plants and bare ground, live and dead matter build-up, and botanical composition of orchardgrass dominated pastur
        4,000원
        131.
        1985.04 KCI 등재 구독 인증기관 무료, 개인회원 유료
        1. Alfalfa의 조단백질(粗蛋白質)은 채취시기가 경과함에 따라 1회(回) 19.64%에서 4회(回) 12.37%로 낮아졌으며, 조섬유, CWC, Cellulose도 낮아지는 경향을 보였다. Orchard grass도 조단백질(粗蛋白質)은 1회(回) 13.79%에서 2,3회(回) 12.97, 12.85%로 낮아졌으며 4회(回) 14.72%로 다소 상승하였다. 그밖에 조섬유, CWC는 채취시기가 진행됨에 따라 낮아졌으며 Cellulose는 시기에 다소
        4,000원
        132.
        1985.04 KCI 등재 구독 인증기관 무료, 개인회원 유료
        본(本) 시험(試驗)은 추파(秋播) 이탈리안라이그라스의 추계예취시취(秋季刈取時取)가 목초(牧草)의 재생(再生), 탄수화물축적(炭水化物蓄積) 및 건물수량(乾物收量)에 미치는 영향을 구명(究明)하기 위(爲)하여 포장시험(圃場試驗)을 수행(遂行)하였으며 결과(結果)를 요약(要約)하면 다음과 같다. 1. 건물수량(乾物收量)은 예취시기(刈取時期)가 빠른 구(區)일수록 높았고(P<0.05), 예취시기(刈取時期)가 제일 늦은 구(區)는 무예취구(無刈取區) 보다도 수
        4,000원
        134.
        2023.01 KCI 등재 서비스 종료(열람 제한)
        엘리엇의 『네 사중주』만이 담고 있는 내용의 난해성은 이미 잘 알려 져 있다. 그럼에도 불구하고 이 작품의 중심에는 기독교 사상이 자리 잡고 있다는 사실에는 많은 연구자들이 동의한다. 그래서 본 글에서는 기독교 사상 중에서 영의 세계와 육의 세계 그리고 영적 각성을 핵심어 로 설정하여 『네 사중주』를 감상해 보았다. 무엇보다도 엘리엇의 난해 한 시간 개념 역시 기독교 시각으로 접근하면 어느 정도 해독이 가능하 다는 사실을 알 수 있었으며 또한 『네 사중주』에 자주 등장하는 무시간 의 순간 역시 영적 시각으로 접근할 필요가 있다. 이와 같이 가시적이 며 물리적인 시간에서 해방된 영원하고 무시간적인 순간들을 엘리엇은 정점은 물론 춤과 영의 여름 등으로 구체화하고 있으며 이와 같은 순간 에 들어가기 위해서는 무엇보다도 자기 체념 혹은 자아의식의 제거임을 알 수 있었다.
        135.
        2022.12 KCI 등재 SCOPUS 서비스 종료(열람 제한)
        Because of the small number of spacecraft available in the Earth’s magnetosphere at any given time, it is not possible to obtain direct measurements of the fundamental quantities, such as the magnetic field and plasma density, with a spatial coverage necessary for studying, global magnetospheric phenomena. In such cases, empirical as well as physics-based models are proven to be extremely valuable. This requires not only having high fidelity and high accuracy models, but also knowing the weakness and strength of such models. In this study, we assess the accuracy of the widely used Tsyganenko magnetic field models, T96, T01, and T04, by comparing the calculated magnetic field with the ones measured in-situ by the GOES satellites during geomagnetically disturbed times. We first set the baseline accuracy of the models from a data-model comparison during the intervals of geomagnetically quiet times. During quiet times, we find that all three models exhibit a systematic error of about 10% in the magnetic field magnitude, while the error in the field vector direction is on average less than 1%. We then assess the model accuracy by a data-model comparison during twelve geomagnetic storm events. We find that the errors in both the magnitude and the direction are well maintained at the quiet-time level throughout the storm phase, except during the main phase of the storms in which the largest error can reach 15% on average, and exceed well over 70% in the worst case. Interestingly, the largest error occurs not at the Dst minimum but 2–3 hours before the minimum. Finally, the T96 model has consistently underperformed compared to the other models, likely due to the lack of computation for the effects of ring current. However, the T96 and T01 models are accurate enough for most of the time except for highly disturbed periods.
        136.
        2021.01 KCI 등재 서비스 종료(열람 제한)
        The purposes of this study were to evaluate the removal characteristics of COD, Ni, and P and to derive appropriate operating conditions for the plating wastewater according to NaOCl reaction time and pH operating conditions in the BPC unit process during the plating wastewater treatment process. As a results of evaluating the removal characteristics for raw wastewater by each BPC unit process, the removal efficiencies of COD, Ni and P in BPC 1-1 unit process were 72.8%, 99.1%, and 100.0%. Therefore, the proper reaction time of NaOCl was derived as 21.1 minutes. In order to maintain the +800 mV ORP and the reaction time of 20 minutes, the temporary injection and continuous injection of NaOCl in the BPC unit process were 13.7 mL and 18.7 mL, respectively. It was found that the temporary injection method of NaOCl reduced the chemical cost by 36.5% compared to the continuous injection method. Also, Ni showed the highest removal efficiency of 97.8% at pH 10.5. On the other hand, P showed a removal efficiency of 57.4% at pH 10.0.
        137.
        2020.08 서비스 종료(열람 제한)
        User empathy is a new trend for the inheritance and development of intangible cultural heritage in the new media era. Better inheritance of the 24 solar terms is not only a design study on its phenology, but also a return to design for innovation. With modern people pay more attention to the emotional experience, the humanized and emotional design is more acceptable. This paper will combine the "24 times telling of flowers wind", combine the unique aesthetic taste of flowers with design, and explore the new expression and interaction of the 24 solar terms caused by users' empathy, which has important reference value for the creation and development of intangible cultural heritage.
        138.
        2019.08 KCI 등재 서비스 종료(열람 제한)
        The purpose of this study was to evaluate the effects of different Hydraulic Retention Times (HRTs) on the contaminant removal efficiency using Aerobic Granular Sludge (AGS). A laboratory-scale experiment was performed using a sequencing batch reactor, and the Chemical Oxygen Demand (COD), nitrogen, orthophosphate removal efficiency, AGS/MLSS ratio, and precipitability in accordance with the HRT were evaluated. As a result, the COD removal efficiency was not significantly different with the reduction in HRT, and at a HRT of 6 h, the removal rate was slightly increased owing to the increase in organic loading rate. The nitrogen removal efficiency was improved by injection of influent division at a HRT of 6 h. As the HRT decreased, the MLSS and AGS tended to increase, and the sludge volume index finally decreased to 50 mL/g. In addition, the size of the AGS gradually increased to about 1.0 mm. Therefore, the control of HRT provides favorable conditions for the stable formation of AGS, and is expected to improve the contaminant removal efficiency with the selection of a proper operation strategy.
        139.
        2018.12 KCI 등재 서비스 종료(열람 제한)
        성태영은 19세기 후반부터 20세기 전반에 걸쳐 영남에서 살았던 유학자이다. 나라는 망하고 유학은 몰락하던 시절, 도도하게 밀려오는 신학문의 도전에 맞서 옛 학문의 가치를 부정하지 않고 보수하고자 노력했다. 곽종석을 통해 전수된 위정척사의 학문과 심설은 시대의 흐름을 조망하면서 인간으로서의 품위를 잃지 않도록 한 힘이었다. 또한 그는 스승을 통해 전통 학문과 신학문의 조화에 대한 관념을 얻었다. 이에 본고는 그가 시대를 인식하고 대응하는 방법을 살펴보고, 면우의 가르침이 무엇이었는지를 먼저 검토하였다. 다음으로 격동의 시대를 산 그에게 자기 정립이 중요하였기에 성리학에 토대를 둔 자아 인식의 내용을 살펴보았고, 면우학단에서 배운 심법이 이것에 어떤 기능을 하는지를 설명하였다. 마지막으로 변절하지 않는 데에는 성리학과 심법이 큰 기여를 하였지만, 그들의 세계 독해에는 한계가 있어 도래하는 새 시대에 대한 대응에는 실패하였음을 논하였다.
        140.
        2018.09 KCI 등재 서비스 종료(열람 제한)
        This study was investigated the effect of immature rhizome production according to harvest times-based treatment method for seed production of Gastrodia elata. The results revealed that when the tuber weight of G. elata harvested in spring (GEHS) was ≥ 100 g, the rate of artificial fertilization, protocorm formation, and immature rhizome formation was 90.9%–94.8%, 3.1%–5.4%, and 10.1%–15.3%, respectively. When G. elata harvested in fall (GEHF) was treated at a low temperature for 4 weeks or more, the rate of artificial fertilization, protocorm formation, and immature rhizome formation was 70.4%–87.6%, 2.2%–2.6%, 8.7%–9.5%, respectively. Therefore, to produce seeds and immature rhizomes, GEHS must have tubers of more than 100 g, whereas GEHF requires breaking dormancy by low-temperature treatment for 4 weeks or more. Compared with those of GEHS, the rate of artificial fertilization, protocorm formation, and immature rhizome formation was lower in GEHF; however, it was higher than those in the natural germination state. Thus, it can be expected that G. elata can be produced throughout the year by ensuring that the seeds and immature rhizomes of G. elata are produced using a constant tuber weight and by breaking dormancy with low temperature treatment.