인지질과 지방산 혼합 LB막의 전기화학적 특성

김남석,손태철,박근호,이경구,주찬흥,Kim, Joon 한국공업화학회 2002 응용화학 Vol.6 No.1

We have investgated the photoisomerization using light irradiation 8A5H-DLPC mixture(1:1) LB film accumulated by monolayer on an ITO. We determined electrochemical measurement by using cyclic voltammetry with a three-electrode system, An Ag/AgC1 reference electrode, a platinum wire counter electrode and LB film-coated ITO working electrode measured in NaC1O_4 solution at a variable concentration. The scan rate was 100mV/s.

연속반응기에서 ${\alpha}$-Methylstyrene과 Acrylonitrile 라디칼 공중합 속도론

김남석,박근호,Kim, Nam-Seok,Park, Keun-Ho 한국응용과학기술학회 2002 한국응용과학기술학회지 Vol.19 No.1

Copolymerization of ${\alpha}$-Methylstyrene(AMS) with Acrylonitrile(AN) was carried out with benzoylperoxide(BPO) as an initiator in toluene at $80^{\circ}C$ in a continuous stirred tank reactor. Reaction volume and residence time were 0.6 liters and 3 hours, respectively. The monomer reactivity ratios, $r_{AMS}$ and $r_{AN}$ determined by both the Kele$T{\"{u}}d\"{o}s$ method and the Fineman-Ross method were $r_{AMS}$=0.16(0.14), $r_{AN}$=0.04(0.06). The cross-termination factor ${\Phi}$ of the copolymer over the entire AMS composition ranged from 0.75 to 0.92. The ${\Phi}$ factors of poly(AMS-co-AN) were increased with increasing AMS content. The simulated conversions and copolymerization rates were compared with the experimental results. It was observed that the average time to reach dynamic steady-state was three times the residence time.

연속반응기에서 Styrene 과 n - Butylmethacrylate 의 용액 공중합의 속도론

김남석,설수덕 ( Nam Seok Kim,Soo Duk Seul ) 한국공업화학회 1997 공업화학 Vol.8 No.3

스티렌(St)과 n-부틸메타크릴레이트(n-BMA)를 용매인 톨루엔에서 과산화벤조일(BPO)를 개시제로 사용하여 80℃에서 연속반응기를 사용하여 용액공중합을 행하였다. 반응물 부피, 체류시간은 각각 0.6L, 3시간으로 하였다. 단량체 반응성비 r₁(St)과 r₂(BMA)는 Kelen-Tu¨do¨s방법 (또는 Fineman-Ross방법)으로 결정하였다. : r₁=0.75(0.67), r₂=0.61(0.56). 공중합체의 가교정지인자, ψ값은 스티렌의 전체 조성에 대해 0.44∼0.78값을 가지고 공중합체내 스티렌 조성이 증가할수록 ψ값도 증가하고 있다. 스티렌과 부틸메타크릴레이트의 공중합반응은 2차 반응속도식에 따랐으며 시뮬레이션한 전환율과 공중합 속도를 실험결과와 비교하였다. 동적인 정상상태에 도달하는 평균시간은 체류시간의 3.5배였다. Solution copolymerization of Styrene(St) and n-Butylmethacrylate(BMA) was carried out with Benzoylperoxide (BPO) as an initiator in toluene at 80℃ in a continuous stirred tank reactor. Reaction volume and residence time were 0.6 liters, 3 hours respectively. The monomer reactivity ratios, r₁(St) and r₂(BMA) were determined by both the Kelen-Tu¨do¨s method and the Fineman-Ross method; r₁= 0.75(0.67), r₂ = 0.61(0.56). The cross-termination factor, ψ factor of the copolymer over the entire St compositions ranged from 0.44 to 0.78. The ψ factors of St-BMA copolymer increased with increasing St compositions. Our present system showed that the continuous copolymerization of St with BMA followed second-order kinetic behavior. The simulated conversions and copolymerization rates were compared with the experimental results. The average time to reach dynamic steady-state was three times and half of the residence time.

알파메틸스티렌 - 메틸메타아크릴레이트 및 알파메틸스티렌 - 아크릴로니트릴의 라디칼 공중합의 반응속도상수

김남석,설수덕 ( Nam Seok Kim,Soo Duk Seul ) 한국고무학회 1993 엘라스토머 및 콤포지트 Vol.28 No.3

The radical copolymerization with propagation and depropagation is presented in order to estimate reactivity rate of monomers and K_(11)(the equilibrium constant for propagation and depropagation) in the copolymerization of α-methylstyrene-co-methylmethacrylate and α-methylstyrene-acrylonitrile. The value of α-methylstyrene and methylmethacrylate and K_(11) are found to be 0.48, 0.47 and 5.0 respectively. The value of α-methylstyrene and acrylonitrile and the K_(11) are found to be 0.1251, 0.0577 and 23.8 respectively. The treatment rate constant of α-methylstyrene-co-methylmethacrylate and α-methylstyrene-co-acrylonitrile in the copolymerization is estimated to be 2.5, 80.72 regardless of monomer feed composition.

A comparative study of nutrient compositions between HongJams prepared from 5 silkworm varieties making white cocoons

김남석,Sang Kug Kang,Sung-Wan Kim,김민영,김기영,고영호 한국잠사학회 2022 International Journal of Industrial Entomology Vol.45 No.2

White-Jade silkworm (previously also known as Baegokjam) variety is the most popular silkworm variety that produces white cocoons. In 2021, the market share of White-Jade variety in Korea is very high, accounting for 88% of the silkworm production. Daebaekjam, Dodamsilkworm, Kumkangjam, and Kumokjam varieties, which have recently been established, make white cocoons like White-Jade. In this study, we found that 5 types of HongJams produced from 5 varieties of silkworms producing white cocoons did not show any severe difference in proximate analysis. The amounts of crude proteins, the most abundant nutrient, were between 71.05 ~ 73.38%, and those of crude lipids were 13.89 ~ 14.69% in 5 types of HongJams. In addition, there was no difference between White-Jade HongJam (WJ) and Daebaekjam HongJam in amino acid compositions. The amount of unsaturated fatty acid was significantly higher in WJ than in the other four types of HongJams, but the omega-6 fatty acids/omega-3 fatty acids ratio was higher in the four types of HongJams. Most of the minerals were higher in four types of HongJams than in WJ, and three heavy metal were not detected in all 5 types of HongJams. Phytochemicals were also most abundant in WJ, but the difference in the amounts were not severe. And pepsin digestibility was the highest for Kumokjam HongJam and the lowest for Dodam-silkworm HongJam, but the difference was not severe. The nutritional component analysis results of this study suggested that four new varieties can be used for producing HongJams, and Daebaekjam can replace White-Jade the most as the protein source.

한반도 평화와 번영시대에 부합하는 군 정신전력 교육 발전방안

김남석,박효선,Kim, Nam-Seok,Park, Hyo-Sun 대전대학교 안보군사연구원 2018 군사학연구 Vol.15 No.-

This study focused on how to supplement and develop military spiritual education in response to promotion of peace and prosperity and Change of Security Environment on the Korean Peninsula. In order to succeed in the peace and prosperity on the Korean Peninsula policy, Strengthening the military spiritual education is necessary. This study was analyzed through the survey and the results are as follows: First, the awareness level of military spiritual education is more than 68%. Second, the satisfaction level of education has been quit motivated, but, the respondents demands various methods of eduction. Third, the current mental power scores showed no significant difference for environmental change. In addition, based on the results of the research, the problem of military spiritual education is as follows. It is not enough to secure the identity that can firmly support the era of peace and prosperity on the Korean peninsula. Poor budget support might hinder improving poor education facilities and outdated equipment. Furthermore, there is a lack of research on future-oriented educational system in support of traditional education methods of repetition-type repeated education and unification. Therefore, we deducted the following development strategies for the military spiritual education in this paper. First, it is necessary to strengthen the military spiritual education to support the era of peace and prosperity on the Korean Peninsula. Second, for enhancing educational environments, the educational facilities and equipments should be improved by understanding the characteristics of the education target. Third, the integrated management of military research institutes specialized in military spiritual education should be pursued as a system development for ensuring the continuous effect of education. In conclusion, continuous attention and research are needed to establish national perspective and national security perspective, raise the military spirit and utilize various education development programs in order to develop efficient military spiritual education in the future.

우리나라 도서관학 교육의 전망

김남석,Kim, Nam-Seok 한국도서관협회 1976 圖協月報 Vol.17 No.1

교회도서실 설치의 필요성

김남석,Kim, Nam-Seok 한국도서관협회 1973 圖協月報 Vol.14 No.2

대학교육을 위한 도서관의 기능

김남석,Kim, Nam-Seok 한국도서관협회 1971 圖協月報 Vol.12 No.5

편목작업의 협동적 노력

김남석,Kim, Nam-Seok 한국도서관협회 1985 圖協會報 Vol.26 No.1