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鄭淳柱,閔庚洙,具滋玉 全南大學校 農漁村開發硏究所 1982 農業科學技術硏究 Vol.17 No.1
우리나라의 降水氣象類型으로 보아 年3回의 보편적인 旱魃이 發生되고 있어서 이때에 2回 이상 조우하게 되는 多季作物의 灌水效果를 生育期別로 파악하기 위하여 일련의 試驗을 遂行하였다. 供試作物로는 秋播大麥, 秋播小麥 및 마늘의 3作目으로 하였으며 自然降雨를 차단하기 위한 施設下에서 4區分의 生育期別로 3日當 10mm씩의 人工降雨 處理를 하였다. 試驗結果는 大略 다음과 같았다. 1. 試驗期間 後半期에 장기적인 旱魃이 내습하여 試驗遂行上 灌水效果가 잘 表現되었다. 2. 大麥의 灌水效果를 높이기 위해서는 월동전인 大麥生育의 第1期와 월동후인 第2期 또는 第3期에 主眼하여 設計함이 期待되었으며 灌水에 의한 作物增收要因은 穗當粒數와 登熟 및 千粒重向上에 있었다. 3. 小麥栽培에 있어서 灌水效果는 發芽 및 初期生育期인 第1期와 第3期에 重點을 둘 必要가 있었고, 增收要因은 穗當粒數와 粒重向上이었으며, 월동 直後의 灌水는 더욱 세밀한 연구 검토가 要求된다. 4. 마늘 栽培上의 灌水處理는, 他作物과 類似하게, 全生育期間의 持續的인 灌水處理가 最上이었고, 단시간일 경우에는 球肥大期인 第4期와 球肥大前期인 第3期의 灌水效果가 높은 것으로 判斷되었다. To evaluate the irrigation effectiveness on winter crops such as winter barley, winter wheat and garlic, being confronted with droughts at least 2 times annually in Korea, this experiment was conducted under the rainfall-intercepting facility. The irrigation treatment was done 4 times during the growing season by 10 mm at every third day as an artificial precipitation. Due to the long-term drought during the later period of the experiment, irrigation efficiency could be well detected. Irrigation supplied at the 1st (before winter), and the 2nd or 3rd stages (after winter) was expected to elevate the yield of winter barley by establishing higher No. of spikelet/panicle, ripeness and 1,000 grain weights. In irrigations on winter wheat, the 1st and 3rd stages, germinating and developing stages, respectively, were most effective that grain weight and that per hill increased, but on the irrigation just after winter further study is necessary. In garlic, as similar with other crops tesed, continuous irrigation through the growing stages was most effective, but when frequency lessened, those during the 4th (bulb enlargement), and the 3rd (before enlargement) stages were very effective, respectively.
강빈구,정상진,민경화,박인범 한국식물학회 1976 Journal of Plant Biology Vol.19 No.2
에칠렌은 황화(etiolated)완두콩의 종아의 절간조직에서 굴지성 자극에 의한 오옥신의 횡적 이동(lateral transport)의 방향을 역전시키고 그 결과로 줄기의 양성 굴지성 반응을 초래한다. 이와 같은 에칠렌의 작용은 중력 감수체(statolith)라고 알려진 전분체의 세포내 이동과는 별 관계를 찾아 볼 수가 없다. 그러나 전분체와 마찬가지로 중력의 작용으로 세포의 밑부분으로 이동하는 골지체는 에칠렌의 영향을 받으면 그 이동 방향이 역전되어 세포의 윗부분으로 몰리게 된다. 이와 같은 실험결과는 골지체의 이동이 굴지성 자극의 감수, 또는 이로 인한 오옥신의 재분포와 차별적인 세포신장에 대해 어떤 인과 관계에 놓여 있다는 것을 제시해 주고 있는 것이다. Ethylene was found to reverse the direction of gravity-induced lateral auxin transport and to cause an accumulation of auxin in the physically upper sides of horizontally placed pea shoots. The pea shoot displayed a slightly positive(downward) geotropic curvature in the presence of applied ethylene. Golgi bodies were found to be distributed preferentially in the bottom halves of cells as against the top halves following geotropic stimulation, and this pattern of intracellular distribution of dictyosomes was also reversed by ethylene treatment. Intracellular displacement of amyloplasts as a result of geotropic induction was not reversed by the action of ethylene. In view of a positive correlation between the direction of auxin movement and the displacement pattern of dictyosomes, it is suggested that the Golgi bodies are involved in the perception of gravity and/or subsequent redistribution of auxin or differential elongation in geotropism.
김명환,정석호,김동진,고영성,민대기 한국액체미립화학회 1996 한국액체미립화학회지 Vol.1 No.2
The structure of sprays from a simplex type pilot nozzle atomizer is studied experimentally by measuring velocities. Sauter mean diameter, and number density. Interaction of the spray with a gas-phase flow fieldgenerated from a 1MW range industrialists turbine combustor adopt ing a counter-swirler is investigated. Various spray behaviors are reported. Especially interest ing characteristics are the tangential motion of the spray and of the spray with swirl interaction. It shows a Rankine combined vortex type of velocity characteristics, having linear velocity profile inside the inner core where small particles exist and rapidly decreasing velocity profiles outside. Interacting spray has relatively uniform number density profiles compared to the nozzle spray itself.
Min, Min S,Kwon, Yong S,Chung, Sang K,Rhee, Kyehan Professional Engineering Publishing Ltd 2016 Proceedings of the Institution of Mechanical Engin Vol. No.
<P>The dimensionless velocity of steady streaming flow with small oscillation amplitude and low viscous layer thickness was assumed to be a function of one dimensionless parameter (viscous layer thickness). This functional relationship was validated by measuring the streaming velocities for bubbles on the size scale of hundreds of micrometers. The streaming velocities were computed for smaller bubbles to extend the range of viscous layer thickness applicable in the functional relationship. The dimensionless velocities were fitted well to the negative three-fourth power of the dimensionless viscous layer thickness, and a scaling law between the streaming velocity and bubble radius was proposed.</P>
$K-BEtest^{\circledR}$, 새로운 생물학적 동등성 시험 통계처리 프로그램의 개발
이영주,최정호,송세흠,서철환,김동섭,박인숙,최기환,나한광,정석재,이민화,심창구,Lee, Young-Joo,Choi, Jung-Ho,Song, Sae-Heum,Seo, Chul-Hwan,Kim, Dong-Sup,Park, In-Sook,Choi, Ki-Hwan,Na, Han-Kwang,Chung, Suk-Jae,Lee, Min-Hwa,Shim, Chang-K 한국약제학회 1998 Journal of Pharmaceutical Investigation Vol.28 No.4
A computer program for personal computers, $K-BEtest^{\circledR}$, was developed to analyze bioequivalence data in accordance with Korean Guidelines for Bioequivalence Test (KGBT). This program is user-friendly, interactive, Hangul-compatible and supports $2{\times}2$ cross-over design as well as $2{\times}2$ Latin square design with various significance levels. This program is able to calculate AUC, $C_{max}$ and $T_{max}$ parameters from the blood drug concentration-time profile of individual subjects and evaluate the parameters statistically for the bioequivalence by ${\pm}20%$ rule, the F-test, the Non-centrality test and 90% confidence intervals. All procedures are supported with graphic interface, interactive menu and outputs in Korean. In this paper, two experimental data sets were analyzed by the program and detailed process was demonstrated. The $K-BEtest^{\circledR}$ program appears to be very effective for analyzing bioequivalence data and can be widely used with convenience and accuracy.
Min, C.K.,Lee, J.W.,Chung, K.H.,Park, H.W. Society for Bioscience and Bioengineering, Japan ; 2010 Journal of bioscience and bioengineering Vol.110 No.3
The methylotrophic yeast Pichia pastoris is one of the best hosts for the production of foreign proteins because of the presence of a strong alcohol oxidase 1 (AOX1) promoter that can be induced by methanol. Feeding the yeast, methanol induces protein production and provides an energy source for the host cells. However, excessive levels of methanol inhibit the growth of host cells, and insufficient methanol levels lead to poor growth and protein production. We have used various methanol feeding strategies to enhance the production of saxatilin. Saxatilin is a novel snake venom-derived disintegrin that inhibits tumor angiogenesis and metastasis and has been shown to suppress ovarian cancer cell invasion. A two-step increase feeding strategy to control the specific growth rate led to the best results in terms of specific protein production rates and final saxatilin amounts within the limited fermentation time.
Min, J.K.,Kim, W.Y.,Chae, B.J.,Chung, I.B.,Shin, I.S.,Choi, Y.J.,Han, I.K. Asian Australasian Association of Animal Productio 1997 Animal Bioscience Vol.10 No.1
An experiment was carried out to evaluate the effects of feeding graded levels of chromium in the form of chromium picolinate on growth performance, blood components, carcass grade, in vitro lipogenesis and lipolysis, and in vitro protein degradation and synthesis in growing-finishing pigs. There were no significant differences for daily weight gain, feed intake and feed conversion among treatments during growing phase, while in the finishing phase, feed intake was lower in groups fed diets with 200 ppb chromium than in other treatment (p < 0.1). Feed conversion was improved in the groups fed diets with chromium compared with control. Carcass weight was similar among treatments while carcass length was longer in groups fed diets with 200 ppb chromium (p < 0.05). Thinner carcass fat was found with groups fed diets with chromium compared to control. Three A grade of carcasses were from groups fed chromium compared to control. No significant differences were observed with blood glucose, insulin, total cholesterol, triglycerides and non-esterified fatty acid at 60kg body weight. While, at 100 kg body weight, blood triglyceride was lower in groups with 200 and 400 ppb chromium but higher in groups with 100 ppb chromium (p < 0.05). In vitro lipolysis and protein synthesis in adipose tissues were increased as dietary chromium was increased from 0 to 200 ppb (p < 0.1). As a result, 200 ppb chromium in a growing-finishing diet could improve feed efficiency and carcass traits; an increase to 400 ppb has no further effect.
Synthesis and Anticancer Activity of Novel Deoxoartemisinin-Glycolipid Hybrids
Min, D.,Kim, M.,Ricci, J.,Jung, S.,Kim, K.,Chung, W.-Y.,Park, K.-K.,Jung, M. Pharmaceutical Society of Japan 2014 Chemical & pharmaceutical bulletin Vol. No.
The practical synthesis and anticancer activity of novel deoxoartemisinin-glycolipid hybrids, which incorporate two drugs into a single molecule and can impact multiple targets simultaneously are presented. These hybrids exhibited potent in vitro anticancer activity against several human cancer cell lines. The deoxoartemisinin-glycolipid hybrids generally demonstrated better anticancer activity than either artemisinin or daumone alone and cisplatin.