Electron transport complex I 의 전자전달특성

李在亮,李相稷 嶺南大學校附設 基礎科學硏究所 1986 基礎科學硏究 Vol.6 No.-

An electron-transport system, complex I, was isolated from bovine heart mitochondria. Michaelis constants, catalytic constants of the complex, and the effects of temperature and pH on the activity of the complex were measured. The NADH-ferricyanide reductase activity of the complex was maximized at 38℃ and above pH7. Michaelis constants of the complex were approximated to be 10-⁴∼10-³m and 5×10??M for ferricyanide and NADH respectively. Catalytic constants, K??. for ferricyanide and NADH were approximately 55sec-¹and 15.1sec-¹respectively. Quinone (2,5-cyclohexadene-1, 4-dione) was fouund out not to be a fittable substrate for the complex.

Internucleotide Phosphotriester Bond 형성에 따른 Arylsulfonyl azolide계 축합시약의 반응성

이상직,김대연,송병수 嶺南大學校附設 基礎科學硏究所 1985 基礎科學硏究 Vol.5 No.-

Arylsulfonylimidazoles, arylsulfony-1,2,4-triazoles and arylsulfonyl-3-nitro-1,2,4-triazoles were synthesized and employed in the formation of a phosphotriester bond between appropriately protected monodeoxyribonucleotides. New condensing agents, benzenesulfonyl-3-nitro-1,2,4-triazole, and p-toluenesulfonyl-3-nitro-1,2,4-triazole were found to be excellent in the dideoxyribonucleotide synthesis via the phosphotriester method.

미국과 일본의 고용보험제도 비교

李相直 대구산업정보대학 1997 논문집 Vol.11 No.1

The purpose of this research is to find significance in the U.S.A.'s and Japan's Unemployment Insurance Program(UIP), for supporting development of Korea's one. As a rule, when unemployment is a social representation to display by intrinsic capitalist conflicts in which UIP suggest that protect the unemployed as financial institutional devices, connecting three services-supporting unemployment benefits, employment security service and job ability development service-each other. The U.S.A.'s Unemployment Insurance Program puts a support of traditional unemployment benefits at the core of income security for the unemplaved. Beyond that, there is partial support of employment security service and skills development service. This could be based on the political significance that include UIP in active labor market policy of the U.S.A. Compared with this, Japan's UIP has the distinction of including skills development service and employment security service as well as unemployment benefits more widely through active political programs. Contrast with this, Korea's UIP has introduced political programs similar to developed country's UIP from the beginning, without traditional UIP, different from those of the U.S.A. and Japan. As soon as possible, Korea's UIP should therefore gradually intradisce the establishment of a formal requisite concerned with employment structure, a financial insurance charge by the type of unemployment and a degree of insured application and a level of premium supply-demand. Finally, I would remind that western Welfare States obtain social consent, the results of a long journey to democracy, to introduce social security services. We can confirm the various products of the U.S.A.'s and Japan's UIP ; we also have to take note of the U.S.A.'s and Japan's employer and adminstrative accommodation of labor's timely request for developing UIP.

人蔘根 製濟의 製造 및 指肪酸 吸收에 미치는 影響에 關한 硏究

李相稷,金英熙,李神雄,陳甲德 嶺南大學校 環境問題硏究所 1984 環境硏究 Vol.4 No.2

Effect of perilla oil emulsion prepared by ginseng powder on absorption of free fatty acid of rat small intestine were investigated in this study. The results were as follow; 1. 4g of ginseng powder could enulsify 1g of perilla oil. 2. Total crude saponin could be separated and identified by method of Namba and Shibata et al, and be measured by weight and volumn. 3. The content of total crude saponin containing in fuor years old ginseng root caltivated in Gum San was 2.26 to 2.70% of total root weight. 4. Ginseng powder increased the absorption of free fatty acid and emulsion prepared by ginseng powder induced more effective increase in free fatty acid absorption than that of non-emulsion form in rat small intestine. 5. Emulsion prepared by ginseng powder was o/w type and more stable in lower water and higher mucosity than in high water and low mucosity. 6. Emulsion was stable for 36days at 5℃~8℃.

아스코르브산등 킬레이트제가 鐵吸收에 미치는 영향

李相稷,崔承熙 嶺南大學校府設 基礎科學硏究所 1983 基礎科學硏究 Vol.3 No.-

Serum iron concentrations of rats which took sirupy diets dissolving substantial amount of ferrous ion and chelating agents including ascorbic acid were determined. Ascorbic acid-fed rats showed elevated level of serum iron, i.e. elevated absorption of iron as reported previously in many papers, but not all the chelating agents improved the absorption of iron. Whether or not chelating capacity of ascorbic acid for the ferrous ion contribute to the absorption of the ion remains to be answered.

온도와 습도가 잔향시간에 미치는 영향

이성직,윤화중,전관수 충남대학교 1990 忠南科學硏究誌 Vol.17 No.2

The decay rate of sound in large reverberation room depends on air humidity and temperature. This phenomenon is one of the important part to reverberation time of architectural acoustics. In this paper, the measurement of the reverberation time was carried out according to temperature and humidity in order to obtain the effect of atmospheric sound absorption. T_60 = ((const)·V)/(-S ln(1-α-)+4mV) corrected as T_60 = ((const)·V)/(-S ln(1-α-)+4.41mV) at humidity 70~80% T_60 = ((const)·V)/(-S ln(1-α-)+3.20mV) at humidity 80~90%

플라즈마 소결 PZT 세라믹스의 유전특성

이형직,송두규,권혁병,정해경,윤상옥,이형복,이홍림 국립7개대학공동논문집간행위원회 2003 공업기술연구 Vol.3 No.-

소결첨가제나 바인더를 넣지않고 만든 무첨가 PZT 분말 성형체를 플라즈마 소결-로 열처리 후의 미세조직의 변화, PbO의 거동 그리고 이에 따른 유전특성을 로소결한 경우와 비교하여 다음과 같은 결과를 얻었다. 플라즈마 소결-로 열처리로 만든 PZT 시편이 로 소결 시편과 비교하여 입성장이 크게 일어나지 않은 미세조직을 나타내었으며, 또한 균일한 Pb, Zr, Ti 성분분포를 보였다. 유전특성에 있어서는 1kHz에서 20%정도의 유전율의 향상을 얻을 수 있었으며 유전소실 또한 40%정도 낮출 수 있었다. 상기의 결과는 DC 플라즈마 소결법의 특징인 소결초기의 급속가열 효과와 PbO의 증발 억제 효과에 의한 것으로 고려된다. PZT powder compacts without additives and binder were processed by plasma sintering-furnace annealing. Microstructures, PbO behaviour and dielectric properties were investigated, and compared to the specimen obtained by furnace sintering. The specimen prepared by plasma sintering-furnace annealing showed more not only fine microstructures but also homogeneous pb, Zr, Ti composition distribution, and revealed 20% higher dielectric constant as well as 40% lower dielectric loss (measured at 1kHz). Above results might be considered to be caused by rapid heating effects, high temperature sintering effects and preventing effects of PbO evaporation characterized by dc plasma sintering.

사회체제 변화에 대한 국가체론적 분석 : 노동관계와 배분관계를 중심으로 A Analysis by the Theory of Nation Formation : Focusing on Labour Relation and Allocation Relation

李相直,金善浩 대구산업정보대학 1999 논문집 Vol.13 No.1

The purpose of this study is to rebuild a new theoretical framework of the transitional process of social system. As the framework is specially a critical result of Marx's historical materialism and doctrine of social formation, it is denied in this study that the social system of mankind in future is communism as well as socialism like Marx's prophecy. Undoubtedly, we cannot negate that Marx's expectation will be realized as long as the proletariat exist. But the chance is come true merely when working class make a fusion solidarity with his own ideology In conclusion, the transitional process of the existent social system is not determinated by an intention of a specific class. The process, namely, is analyzed on correspondent process of labour and allocation relation to productive force. In other words, the process is examined on the endless solutional process of antagonistic opposition of the subject of social formation as agent of forces which interact on labour and allocation relation in social system. In addition, if we forecast a future type of the existent social system, we must begin by analyzing the mutual antagonistic relation of the subject in social formation. This study is a new theoretical trial that is formulated a framework in relation to the above-mentioned argument. Therefore, I would like to say that this study must be amended, made good and accepted all criticism. Because it is not decided conclusively.

소의 심장 cytochrome c oxidase의 전자전달 특성

李相稷,呂基淑,李在亮,郭天錫,尙瑛錫 嶺南大學校附設 基礎科學硏究所 1988 基礎科學硏究 Vol.8 No.-

Cytochrome c oxidase (complex Ⅳ) was isolated from bovine heart mitochondrion. The spectra of isolated cytochrome c oxidase which was considered to be oxidized showed absorption bands at 598nm and 421nm in the oxidized form and at 604nm and 443nm in the reduced form. The activity of cytochrome c oxidase measured by the redox system of ferrocytochrome c-oxygen was not affected by NH₄OH and ethylenediamine. It was, however, found that 2-mercaptoethanol and potassium cyanide inhibited its reactivity respectively.

Dideoxyribonucleotide의 비효소적인 방법에 의한 합성과 분리방법

이상직,송병수 嶺南大學校附設 基礎科學硏究所 1984 基礎科學硏究 Vol.4 No.-

A protected dinucleotide, 5'-O-dimethoxytritylthymidylyl-(3'→5')-3'-O-acetyl-N??-benzoyldeoxyadenosine, was synthesized by 'Phosphodiester Method' and separated by solvent extraction/recrystalization. The amino group of the base, 3'-hydroxyl group of deoxyadenosine-5'-monophosphate, and 5'-hydroxyl group of thymidine were previously protected with benzoyl, acetyl, and di-p-methoxytrityl group respectively before the condensation between the nucleotide and the nucleoside was conducted. The condensation reaction was more efficiently conducted with triisopropyl benzenesulfonyl chloride(TPS) than with dicyclohexylcarbodiimide(DCC). The dinucleotide synthesized was purified utilizing solvent systems isopropyl ether/0.5M triethylamminium bicarbonate (TEAB), ethyl ether-ethyl acetate (5:5, v/v)/0.5M TEAB, and 0.5M TEAB/CH₂CL₂-CCl₄(4:6, v/v). This method was more efficient than the ordinary diethylaminoethyl (DEAE) cellulose column chromatography.