• Journal of the East Asian Society of Dietary Life
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• v.6 no.2
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• pp.127-134
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• 1996

This study was performed to investigate the effects of green tea activites in rats with administration of aluminum in drinking green tea. Male Sprague-Daweley rats were divided into five groups consisting of the control, aqueous green tea at the level of 1.5%, a aquous green tea(1.5%) and aluminum sulfate solution 500ppm, before the 2 weeks administration by aquous green tea(1.5%) and after the 2 weeks aluminum sulfate solution 500ppm, aluminum sulfate solution 500ppm. After 4weeks of feeding, serum enzymes activites were measured for experimental rats, and analyzed the activites of alanine amino trans aminase(ALT), asparate amino transminase(AST) , lactate dehydrogenase(LDH), cholinesterase(ChE). Comparing to control group, Alanine amino trans aminase (ALT) was decreased in aqueous green tea administrated group and increased significantly administration by aluminum sulfate solution 500ppm group. Alanine amino trans aminase(ALT) was decreased administration by aqueous green tea group and Increased addition to aluminum sulfate solution 500ppm group as compared to control group. Lactate dehydrogenase(LDH) was increased compared to control group by experimental group and increased significantly administration by aluminum sulfate solution 500ppm. Cholinesterase (ChE) activity was decreased compared to control group by experimental group.

• Journal of the Korean Society of Food Science and Nutrition
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• v.30 no.4
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• pp.673-678
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• 2001

To investigate effects of ethylacetate fraction of onion(EFO) on serum lipid metabolism in rats fed high cholesterol diet, four groups of Sprague-Dawley male rats weighing about 100 g were given a high cholesterol diet of 1% cholesterol and 0.25% sodium cholate and EFO containing three concentrations (1%, 3% and 10%), respectively for 6 weeks. growth rate of the hypercholesterolemic group (control group) was higher than the normal group, whereas the groups given EFO showed a decreasing trends, compared with the control group, especially the most excellent effect in 10% of EFO, but any differences were not found between groups in feed efficiency ratio. Serum concentrations of total cholesterol and LDL-cholesterol were lower, whereas HDL-cholesterol concentration was significantly higher in EFO suplemented-grups than control group in dose dependent manner. EFO increased HDL-cholesterol/total cholesterol ratio and lowered atherogenic index. Free cholesterol and triglyceride concentrations were not decreased significantly with in 6 weeks, but cholesteryl ester concentration was significantly decreased in EFO suplemented groups than control group, and in case of serum phospholipid concentration, EFO was not showed significantly effect, but it gradually increased the level, compared with the control group. Therefore, it might be expected that ethylacetate fraction of onion is believed to be a possible protective or curative effects for the fatty liver and hyperlipidemia-induced by a high cholesterol diet.

• Journal of the Korean Society of Food Science and Nutrition
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• v.30 no.6
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• pp.1272-1277
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• 2001

This study was designed to investigate the effects of Korean Gu-Gi-Ja tea on plasma hormone such as renin and aldosterone water in cadmium administered rats. The cadmium administered rats were given 50 ppm and 100 ppm of CdCl$_2$.2$H_2O$ disolved in the distilled water. Sixty male Sprague-Dawley rats weighing 100$\pm$10 g were divided into 6 groups according to body weight. The control group was fed standard diet without cadmium. The experimental groups, which were fed standard diet containing 50 ppm and 100 ppm cadmium and Gu-Gi-Ja tea group. The results of this study were as follows; food intake, body weight gain and kidney weight content in cadmium administered groups were lower than those in Gu-Gi-Ja tea group. The contents of cadmium in kidney of the rats were determined by using ICP (Inductively Coupled Plasma Spectrcphotometer). In kidney accumulation of Gu-Gi-Ja tea groups were lower than those in cadmium administered group. Plasma levels of renin activity was increased by Cadmium administration group, compared with Gu-Gi-Ja tea and cadmium administred group. Plasma levels of aldosterone activity was increased by cadmium administration group, compared with Gu-Gi-Ja tea and cadmium administred group. This results suggested that Gu-Gi-Ja tea has a lowering effects on the accumulation of cadmium in kidney and it is believed that the Gu-Gi-Ja tea has some protective effects to cadmium administered lenin and aldosterone hormone in rats, but the mechanism of these effects was obscure.

• Geophysics and Geophysical Exploration
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• v.22 no.2
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• pp.62-71
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• 2019

We conducted DC resistivity and MT survey to obtain the resistivity structure of the central Myanmar basin. We tried to analyze the underground structure through the resistivity variation of Myanmar by performing representative geophysical survey methods because researches on the electrical resistivity structure are insufficient in Myanmar. The electrical resistivity is expected to be low considering the marine sedimentary rocks composed of shale and sandstone in this area. The DC resistivity and MT survey were carried out using SmartRho of Geolux Co., Ltd. and MTU-5A of Phoenix geophysics Ltd., respectively, to visualize the electrical resistivity structure of study area. DC resistivity and MT survey showed an electrical resistivity less than dozens of ohm-m within the depth of 100 m. In particular, MT survey data were almost similar to TM and TE modes in the frequency range above 1 Hz. The two-dimensional inversion of MT data showed a subsurface structure with low resistivity below 150 ohm-m divided into east-west direction. We confirmed that the inversions of DC resisitivity and MT data along an overlapped survey line represented similar results. In the future, considering the high electrical conductivity, it would be effective to perform DC resistivity and MT survey simultaneously to study the electrical resistivity structure of the central Myanmar basin.

• 주택과사람들
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• s.193
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• pp.84-85
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• 2006

아파트나 상가, 빌딩 등을 사용할 경우 관리비 고지서를 받게 된다. 이때 관리비 내역을 일일이 따져 보기보다는 크게 개의치 않고 납부할 때가 많다. 하지만 일부 사건의 경우 이해하기 힘든 항목이 관리비 내역에 포함돼 분쟁이 발생하기도 한다. 일단 소송이 들어오면 여러 사람들의 이해관계까 얽혀 있어 해결이 쉽지 않고 번거롭다. 공동주택과 상가 건물 등의 관리비 책정 및 납부에 대한 법률적인 내용을 살펴보자.

• Proceedings of the Korean Statistical Society Conference
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• 2004.11a
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• pp.149-154
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• 2004

이 논문에서는 표본조사에서 자주 사용되는 표본의 대표성, 비편향성, 그리고 효율성에 개넘에 대하여 고찰하였다. 표본의 대표성은 조사단위의 포함확률로 표현되며 조사모집단의 포함범위와 연관이 있는 반면, 비편향성과 효율성은 표집설계와 추정량에 관련된 개념이다. 비편향성과 효율성은 표본의 대표성을 전제로 하며 가중치 부여로 나타난다

• Defense and Technology
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• no.1 s.167
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• pp.18-19
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• 1993

군사비가 경제발전에 미치는 영향을 분석해 보면 군사비나 경제개발 투자비의 문제가 아니라 군사비를 포함한 국가재정이 얼마나 효율성 있고 생산성 있게 쓰여졌는가가 중요한 문제입니다. 앞으로의 군사력 건설은 기술집약적 방위에의 방향으로 나아가면서 국방비 사용의 효율성(비용효율성)을 극대화하고, 동시에 경제적으로 파급효과도 크게끔 하는것이 요구된다 하겠습니다

• Computational Structural Engineering
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• v.10 no.1
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• pp.7-18
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• 1997

본 고에서는 컴퓨터를 이용하여 비선형문제를 어떻게 다룰 것인가에 관해 기초 지식에서부터 응용까지를 간단히 설명한다. 먼저 기하학적 비선형 문제를 중심으로, 기존의 비선형 해석기법에 관해 기초적인 기법부터 고난도의 기법까지 일반적으로 많이 사용되는 것을 자세히 소개한다. 또 대공간 구조물의 비선형 해석기법에 관한 이해를 돕기 위해 비교적 간단한 부재인 케이블/트러스 요소를 이용한 몇몇 예제와 비선형해석으로 인한 구조물 거동의 특성도 다룬다.

• JOURNAL OF ELECTRICAL WORLD
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• no.8 s.92
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• pp.77-81
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• 1984

최근 초고층빌딩이 잇달아 건축되고 있다. 이들 빌딩의 전력수요는 빌딩규모의 대형화 및 OA 기기의 도입으로 대폭적으로 증대하고 있다. 따라서 빌딩용 수변전설비는 ''고전압''또는 ''대용량화''추세에 있으며 새로운 수변전설비의 개발이 필요하게 되었다. 여기서는 이와같은 추세에 비추어 개발된 수변전설비를 소개하기로 한다.

• Journal of the Earthquake Engineering Society of Korea
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• v.9 no.5 s.45
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• pp.53-61
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• 2005

In order to evaluate the limit earthquake resistance of multi-story steel frames influenced by the strength and stiffness ratios of members, a series inelastic response analysis were carried out. From the analysis results, the damage distribution rules of multi-story steel frames were proposed. Conclusions are summarized as follows; 1)As the stiffness ratios of beam and column becomes small, the damage concentrates on the lower end of columns of the first story. 2) Considering the strength and stiffness ratios of the beam and column with weak beam type mechanism, the equations predicting the damage distribution of multi-story steel flames were proposed. 3) Through the equation which was supposed in this study, it is speculated that the damage distribution of the rigid or semirigid beam collapse type multi-story steel structure building can be predicted.