• The Korean Journal of Zoology
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• v.8 no.2
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• pp.47-50
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• 1965

양서류 오종 Bombina orientalis , Cacopoides borealis , Bufo bufo asiaticus, Rana nigromaculata nigromaculata, Rana rugosa 의 혈청단백질을 Paper electrophoresis 의 방법으로 분석비교하였다. 그 결과 Bombina orientalis 의 혈청단백질은 인간의 것과 마찬가지로 5개의 protein fraction으로 나누어지고 그중 fraction III 단백지링 가장 많은 함량을 구성하며 peak 가 가장 높다. Cacopoides borealis 와 Bufo bufo asiaticus 의 혈청단백질은 4개의 protein fraction 으로 나누어지는데 Cacopoides boreealis 에서는 fraction IV protein이 Bufo bufo asiaticus 에서는 fraction I protein 이 가장 많은 함량을 구성하고 있다. Rana nigromaculata nigromacuata 와 Rana rugosa 는 graph 상에 나타난 peak로 보면 상호유사하나 protein fraction 수는 차이가 있다. 그리고 albumin은 전 함량 per centage의 약 반을 차지하고 있다. 즉 종간의 거리가 멀수록 protein fraction 의 차이가 percentage 함량에 있어서 명백하여짐을 암시하여준다.

• YAKHAK HOEJI
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• v.43 no.6
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• pp.798-801
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• 1999

To investigate the effect of Artemisia apiacea Hance on the hair growth of black mouse (C57BL/6), this study was carried out. We obtained chloroform fraction, ethyl acetate fraction, butanol fraction from ethanol extract. When these fractions were administered to the black mouse by the method of skin paste, chloroform extract increased remarkably the hair growth of black mouse. thus Chloroform fraction was devided into 5 fractions from 20:1 to 1:1 with chloroform : methanol. the detail fractions of chloroform fraction were administered to the black mouse. We obtained the result that fraction I, II, III, IV are superior to minoxidil of positive control. Most of all fraction II have an dramatical effect on hair growth of black mouse.

• Transactions of the Korean Society of Automotive Engineers
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• v.12 no.1
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• pp.55-60
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• 2004

Residual gas acts as a diluent which results in reducing the in-cylinder temperature as well as the flame speed, significantly affecting fuel economy, NOx emissions and combustion stability. Therefore it is important to determine the residual gas fraction as a function of the engine operating parameters accurately. However, the determination of the residual gas fraction is very sophisticated due to the unsteady state of induction and exhaust process. There has been little work toward the development of a generally applicable model for quantitative predictions of residual gas fraction. In this paper, a simple model for calculating the residual gas fraction in SI engines was suggested. The amount of fresh air was evaluated through AFR and fuel consumption. After this, from the intake temperature and pressure, the amount of total cylinder-charging gas was estimated. The residual gas fraction was derived by comparing the total charging and fresh air. This results coincide with measured EGR value very well.

• The Korean Journal of Food And Nutrition
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• v.7 no.4
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• pp.332-337
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• 1994

The antioxidant activity of solvent extracts isolated from barley leaves was investigated by measuring peroxide value. The fractions of methanol extract obtained from preparative TLC was also studies, with UV-Visible spectrum, total phenol contents and hydrogen donating ability(HDA) The antioxidant activity of various solvent extracts was, in decreasing order, methanol> ethyl ether> methylene chloride $\geq$ ethyl acetate $\geq$acetone> hexane. The antioxidant activity of the fractions of methanol extract was, in decreasing order, fraction 2> fraction 3> fraction 1 and their activity was all superior to that of tocopherol at 500 ppm level. All fraction(1, 2 and 3) exhibited a strong UV absorption at 280 m which would be specifically produced by phenolic compound. UV absorption at 280 m of fraction 2 was greater than those of fraction 1 and 3. In the visible spectrum of these fractions, the maximum .absorption wavelengths of fraction 1, 2 and 3 were 660, 460 and 460 m, respectively. Antioxidant activity of barley leaves seemed to be due to the flavonoids containing phenolic group by UV spectrum and total phenol content.

• Journal of Ginseng Research
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• v.19 no.2
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• pp.108-113
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• 1995

Effect of ginseng polysaccharide fraction was examined for $CCl_4$-induced hepatotoxicity in vitro and in vivo. In $CCl_4$-injured primary cultured rat hepatocytes, treatment of the polysaccharide fraction (0.1, 0.3, 1.0 mg/ml) significantly Inhibited the release of LDH and GOT into the culture medium in a dose-dependent manner. Oral administration of the polysaccharide fraction (100, 200 mg/kg) inhibited the decrease of body weight and the increase of the ratio of liver to body weight in $CCl_4$-intoxicated rats. Elevation of GOT, GPT and ALP activity in the serum by $CCl_4$-induced hepatotoxicity was suppressed by administration of ginseng polysaccharide fraction. MDA levels increased in the serum as well as in the liver tissue by treatment with $CCl_4$ showed a tendency to be 연w in the rats given to the polysaccharide fraction. These results suggest that the polysaccharide fraction may be active substance responsible for antihepatotoxic effect of Panax ginseng.

• Honam Mathematical Journal
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• v.38 no.2
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• pp.367-373
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• 2016

Adiga and Anitha [1] investigated the Ramanujan's continued fraction (18) to present many interesting identities. Motivated by this work, by using known formulas, we also investigate the Ramanujan's continued fraction (18) to give certain relationships between the Ramanujan's continued fraction and the combinatorial partition identities given by Andrews et al. [3].

• Journal of the Chungcheong Mathematical Society
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• v.22 no.2
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• pp.155-159
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• 2009

Using the Binet's formula, we show that the quotient related ratio $l_{1(x)}\;\neq\;0$ for the eventually periodic continued fraction x. Using this ratio, we also show that the derivative of the Minkowski question mark function at the simple periodic continued fraction is infinite or 0. In particular, $l_1({[\bar{1}]})$ = 2 log $\gamma$ where $\gamma$ is the golden mean $(1+\sqrt{5})/2$ and the derivative of the Minkowski question mark function at the simple periodic continued fraction $[\bar{1}]$ is infinite.

• Kyungpook Mathematical Journal
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• v.58 no.2
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• pp.319-332
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• 2018

In the present paper, we establish relationship between continued fraction U(-q) of order 12 and Ramanujan's cubic continued fraction G(-q) and $G(q^n)$ for n = 1, 2, 3, 5 and 7. Also we evaluate U(q) and U(-q) by using two parameters for Ramanujan's theta-functions and their explicit values.

• 한국생물공학회:학술대회논문집
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• 2002.04a
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• pp.253-256
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• 2002

For the antimicrobial activity test, Akebia quinata DECAISNE stem were extract water and fractionate it with four solvents which had a different polarity, antimicribial activity were increased in oder of petroleum ether fraction = diethyl ether fraction ${\leq}$ n-buthanol fraction < ethyl acetate fraction < aqueous fraction. Water extracts of stems and fruits were showed inhibitory two species bacteria](Bacillus subtills KCTC 1021, Bacillus cereus KCTC 1012) from developing.

• Archives of Pharmacal Research
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• v.25 no.1
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• pp.61-66
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• 2002

From our previous result that Panax ginseng head extract had inhibition of gastric damages, the extract was fractionated. Among the hexane, chloroform, butanol and water fractions, butanol fraction Showed the most potent inhibition of HCl.ethanol-induced gastric lesion, aspirin-induced gastric ulcer, acetic acid-induced ulcer and Shay ulcer. Butanol fraction showed significant increase in mucin secretion, and inhibited malondialdehyde (MDA) and $H^{+}/K^{+}ATPase$ activity in the stomach. This results indicate that the effectiveness of the fraction on gastric damages might be related to inhibition of acid secretion, increment of mucin secretion and antioxidant property.