• Toxicological Research
• /
• 제8권1호
• /
• pp.1-7
• /
• 1992

Brazilin, the main constitutent of Caesalpinia sappan, was examined for its immunomodulating activities in normal CBA mice. Mitogen induced proliferation and production of ConA induced T-cell growth factors (TCGF) of splenocytes were significantly reduced in brazilin treated group, cmpared to control group. It was also found that suppressor activities of splenocytes in brazilin treated group was significantly increased compared to those in normal control group.

• 한국전기전자재료학회:학술대회논문집
• /
• 한국전기전자재료학회 1998년도 추계학술대회 논문집
• /
• pp.41-44
• /
• 1998

(1-X)LTC-XHTC composites were manufactured with the variation of X in the range of 0.3 $\leq$X $\leq$0.6 and its dielectric properties were investigated. Here, LTC and HTC are PZN-BT-PT -based ceramics with quire temperature(Tc) of 100。 C-3$0^{\circ}C$, respectively. 0.6HTC-0.4LTC composite ceramics show excellent values of $\Delta$$\varepsilon$$_{r}$/$\varepsilon$[%] which were -7.1% at -2$0^{\circ}C$ and -12% at 5$0^{\circ}C$, respectively. It is thought that composite ceramics with above results can be applied to electrostrictive actuator, high voltage ceramic capacitor etc.mic capacitor etc.r etc.c.

• Biotechnology and Bioprocess Engineering:BBE
• /
• 제7권2호
• /
• pp.57-66
• /
• 2002

This review focuses on the use of immobilized lipase technology for the hydrolysis of oils. The importance of lipase catalyzed fat splitting process, the various immobilization procedures, kinetics, deactivation kinetics, New immobilized lipases for chiral resolution, reactor configurations, and process considerations are all reviewed and discussed.

• 한국전기전자재료학회:학술대회논문집
• /
• 한국전기전자재료학회 1998년도 춘계학술대회 논문집
• /
• pp.55-58
• /
• 1998

Recently, neural networks with self-adaptability like human brain have attracted much attention. It is desirable for the neuron-function to be implemented by exclusive hardware system on account of huge quantity in calculation. We have proposed a novel neuro-device composed of a MFSFET(ferroelectric gate FET) and oscillation circuit with CUJT(complimentary unijuction transistor) and PUT(programmable unijuction transistor). However, it is difficult to preserve ferroelectricity on Si due to existence of interfacial traps and/or interdiffusion of the constitutent elements, although there are a few reports on good MFS devices. In this paper, we have simulated CUJT and PUT devices instead of fabricating them and composed oscillation circuit. Finally, we have resented, as an approach to the MFSFET neuron circuit, adaptive learning function and characterized the elementary operation properties of the pulse oscillation circuit.

• 동의생리병리학회지
• /
• 제18권4호
• /
• pp.1159-1162
• /
• 2004

We studied on the production of the ceramic by the mineral-Oriental medicine and the property of the clean active water depositting on the ceramic stone. The results are as follows: We properly mixed of maifanshi, mica, ochre, and added to a small amount cinnabar, and therefore formed the ceramic stone. By the plasticity process and the irradiating magnetic force recovered the disappeared a part of constitutent elements. The recovered effects were become higher the freshness, maintenance, deodoriztion, clean water. As well as having the ability on capture of the notoxious heavy metal on human. The ceramic powder were mixed proper dose maifanshi, mica. And the powder had ionization, absorption, adhesion by the plasticity process and magnetic force. The clean active water of depositting on the ceramic stone during 24hours were observed significant the content of micro element, dissolved oxygen, abstraction on Herbs.

• 한국자원식물학회지
• /
• 제9권2호
• /
• pp.197-201
• /
• 1996

참당귀(當歸) 추대억제(抽臺抑制) 재배법(栽培法)을 개발하기 위하여 종자를 조기에 파종, 육묘하여 본포에 이식한 후 당년가을에 수확한 뿌리의 부위별(部位別) 주성분(主成分)을 관행재배한 당귀와 비교하므로서 1년생 당귀의 추대억제효과와 약재로서의 가치를 평가하고저 하였다. 1. 관행(慣行) 재배(栽培)한 2년생 당귀의 뿌리내 decursin 과 decursionol angelate의 함량을 합한 평균치는 6.47% 임에 비하여, 단기육묘(短期育苗)하여 수확한 1년생 뿌리 내에서의 함량은 4.82%로 낮은 경향이었다. 2. 약효성분(藥效成分)의 부위별(部位別) 함량은 세근(지근)과 피충부가 높은 반면 중심주에서는 낮은 경향이었다. 3. Decursin및 decursinol angelate의 구성비(構成比)는 1년생에서는 10 : 7.5, 2년생에서는 10 : 6의 비율로 2년생에서 는 decursinol angelate 함량이 감소하는 경향이었다. 또한 2년생에서는 부위에 관계없이 두성분의 구성비가 60% 정도로 안정적인데 반해, 1년생에서는 세근과 지근에서 decursional angelate 구성비가 높은 경향이었다. 4. 조기(早期) 육묘재배(育苗栽培)한 1년생 당귀의 생약적(生藥的) 가치(價値)는 일정 면적(面積)에서의 수량(收量)이나 또는 단순한 성분함(成分含) 양면(量面)에서 무리가 없을 것으로 사료되지만, 주성분인 decursin의 구조이성체인 decursinol angelate와의 구성비(構成比)에 따른 효능상의 문제는 추후 검토가 요망된다.

• 한국응용과학기술학회지
• /
• 제11권1호
• /
• pp.17-26
• /
• 1994

The present study was carried out in atheroscleorotic New Zealend white(NZW) rabbits. to evaluate the effect of dietary supplementation with Korean pinenut oil, on plasma total fatty acid composition. In study I, NZW rabbits were fed 10 weeks on a commercial chow diet supplemented with 5% of energy as fats(soybean oil or pinenut oil) or 10% of energy as fats(soybean oil or pinenut oil) with the addition of 1% cholesterol to the diet. Nineteen fatty acids ranged from myristic acid (14:0) to cervonic acid (22:6 ${\omega}3$) were identified in all the samples. The c5, c9, $c12{\sim}18$ : 3 acid was not reported in the fatty acid methyl ester profiles of each group because it was included in the linoleic acid peak. The major constitutent fatty acids in the chow diet group were linoleic acid, oleic acid, palmitic acid and ${\alpha}$-linolenic acid. In the cholesterol group, oleic acid, linoleic acid and palmitic acid were the major fatty acids. In plasma of cholesterol-fed animals, the levels of 16:1 ${\omega}$ 7 and 18:1 1 ${\omega}$ 9 were increased. Linoleic acid was the major fatty acid in soybean oil/cholesterol and pinenut oil/cholesterol groups. Plasma linoleic acid levels were significantly incresed from 4 to 6% by the supplementation of 5% soybean or 5% pinenut oil in the cholesterol diet for 5 weeks, compared to cholesterol group. Plasma 16 : 1 ${\omega}$ 7 levels in animals fed with 5 or 10% pinenut oils were significantly lower than in those fed cholesterol for 5 weeks. After 10 weeks on the soybean oil and pinenut oil diet there were no significant differences in the fatty acid composition. In study II, the fatty acid composition was not affected by the types or levels of oils supplemented for 5 weeks. After 10 weeks on the oil diets 16:1 ${\omega}$ 7 and 18:1 ${\omega}$ 9 were decreased in 10% soybean in oil/cholesterol and 10% pinenut oil/cholesterol groups, compared to cholesterol group.

• Applied Biological Chemistry
• /
• 제35권3호
• /
• pp.146-151
• /
• 1992

들깨종자의 지방질 변화를 규명하기 위하여 수원 10호와 제주의 두 품종을 시료로 하여 성숙과정중에 지방질의 구성성분과 지방산을 분석한 결과는 다음과 같다. 종자의 성숙중당 및 인지방질은 감소하였다. 완숙종자의 지방질을 구성하는 당, 인지방질은 수원 10호에는 25.4%, 4.5% 들어 있었고 제주에서는 44.5% 및 4.0% 들어 있었다. 에테르추출 당지방질의 주요성분은 세레브로시드, 갈락토실 디글리세리드 및 모노갈락토실 디글리세리드였다. 완숙 종자의 에테르추출 당지방질의 주요구성 지방산은 수원 10호가 리놀렌산이 51.1%로 올레산 19.4%보다 많았으나 제주는 올레산이 31.1%로서 리놀렌산 18.6%보다 많았다. 인지방질의 주요성분은 포스파티딜콜린, 포스파티딜 글리세롤, 포스파티딜 에탄올아민, 라이소포스파티딜콜린 이었으며 그중 포스파티딜 글리세롤의 변화는 제주에서는 불규칙하나 수원 10호에서는 성숙기간에 따라 증가되었다가 후기에 현저하게 감소되었다. 메탄올추출 인지방질을 구성하는 주요 지방산은 올레산이 $28.7{\sim}35.2%$ 리놀렌산 $8.2{\sim}11.2%$, 리놀레산 $16.4{\sim}32.5%$ 및 팔미트산 $22.7{\sim}29.9%$ 범위에 있었다.

• 한국재료학회지
• /
• 제7권3호
• /
• pp.218-223
• /
• 1997

과냉각액체구역(${\Delta}T_{x}=T_{x}-T_{g}$)을 갖는 $Fe_{80}P_{10}C_{6}B_{4}$ 조성에 천이금속(Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Mn, Co, Ni, Pd, Pt및 Cu)를 첨가하여 이들 원소가 유리화온도($T_{g}$), 결정화온도($T_{x}$) 및 과냉액체구역 (${\Delta}T_{x}$)에 미치는 영향에 \ulcorner여 조사하였다. $Fe_{80}P_{10}C_{6}B_{4}$ 합금의 ${\Delta}T_{x}$ 값은 27K였으나 이 합금에 Hf, Ta 및 Mo을 각각 4at%첨가하면 그 값이 40k 이상으로 증가하였다. 이같은 ${\Delta}T_{x}$ 값의 증가는 유리화온도($T_{g}$의 상승보다 결정화온도($T_{x}$)의 상승폭이 크기 때문이다. $T_{g}$ 및 $T_{x}$는 외각전자밀도(e/a)가 약 7.38에서 7.05로 감소할수록 상승하였다. e/a의 감소는 천이금속과 다른 구성원소(반금속)사이의 상호결합상태를 의미한다. 즉 $T_{g}$ 및 $T_{x}$의 상승은 강한 상호결합력에 기인하는 것으로 사료된다.