Bovine Enterovirus 에 關한 硏究

마점술(馬点述) 대한바이러스학회 1972 Journal of Bacteriology and Virology Vol.2 No.1

The strains produced hemagglutinin in cell cultures although its production varied in different cells; in some cases virus grew well but no hemagglutinin was detected. In hemagglutination strain BF20 differed again from strains BFS-1 and BFK-1 The latter two strains agglutinated erythrocytes of guinea pig and mouse and did not thos of monkey, hourse, swine and sheep, whereas strain BF20 agglutinated erythrocytes of all these spacies. Hemagglutination occurred at 4C, and the optimum pH was 7.4. The tests were readily read after 2 hours of reaction with monkey erythrocytes, but it took a long time of 18 to 20 hours when erythrocytes of the other species were used.

Radiation - Induced Polymerization of Acrylonitrile - Zine Chloride Complex Part 4. Solvent Effect

마석일 한국고분자학회 1977 폴리머 Vol.1 No.3

浅谈中韩文化交流的现状、问题与对策 ― 以中国视角为中心

마정 (馬晶),김현태 대한중국학회 2017 중국학 Vol.60 No.-

2017 is the 25th anniversary of establishment between Korea-China diplomatic relation. Since the establishment of diplomatic relation in 1992, the two countries have actively exchanged political, economic, cultural, diplomatic interchange due to the conditions such as relatively favorable geographical proximity, cultural homogeneity, etc. compared to exchange with other countries. According to the statistics of China Magazine (2017.03,07), the number of personal exchange was 130,000 a year in 1992, the first year of establishment of diplomatic relation, however in the early 2016, before Thaad dispute, over 100,000 tourists visited each other’s country weekly, in a rapid development. Korean overseas students in China(在中) were around 66,000(15%) in 2016, the biggest proportion among foreign students, and Chinese overseas students in Korea(在韓) also rapidly developed to 70,000 students, over the half(57%) of international students. Also, 140 places concluded exchange agreement between provinces(省), cities between the two countries, accordingly, cultural exchange between the two countries were enhanced in qualitative level as well as quantitative expansion during the last 25 years, and cultural exchange became the most important core factor of Korea-China exchange. However, there are lots of problems in Korea-China cultural exchange due to reinforcement of nationalism, historical awareness, discrimination awareness, and cultural difference, etc. Also, there are obstructive factors along with political interest between the U.S. and China in respect of the Korean Peninsula situation. Particularly, the two countries are facing a serious crisis of cultural exchange since the establishment of diplomatic relation, such as prohibition of Chinese group tourists to Korea, restriction of Korean popular culture and Korean wave celebrities’ activities, etc. by Chinese government since Thaad placement problem in 2016. This research raised the status and problem of Korea-China cultural exchange firstly from the viewpoint of China. Also, based on this, suggested a basic plan to solve such problem, henceforth. Research based on the viewpoint of Korea will be progressed in follow-up study. 2017年是中韩建交25周年,建交以来中韩两国尽显地缘相近、人缘相亲、文缘相通的优势,文化交流与合作空前高涨,两国人员往来日益频繁,文化交流领域不断拓宽,交流水平和质量不断提高,文化交流成为中韩关系的重要组成部分。但是,在中韩双边文化交流过程中仍然存在着民族主义,相互认知差异,民间负面情绪增大等诸多亟待解决的问题。面对日益走向成熟且又敏感复杂的中韩关系,两国有必要调整对彼此的认知,尊重文化的多样性,以“和而不同”、“求同存异”为理念,寻找在不同文化之间开展交流与对话的途径,彼此取长补短,以达到共同发展。特别是在当前由于“萨德”入韩问题而使中韩关系面临挑战与挫折时,更加需要双方进一步增进理解和信任,扩大共识,改善两国关系的民意基础,而文化交流是加深两国国民之间相互理解、扩大友好合作,夯实中韩战略合作伙伴关系必不可少的有效途径。

겔 투과 크로마토그래피

마석일 한국섬유공학회 1984 한국섬유공학회지 Vol.21 No.4

광양이온 중합을 이용한 별모양 4가닥 폴리(테트라히드로퓨란)의 합성

마석일,황현선,신종호,Ma, Seok-Il,Hwang, Hyeon-Seon,Sin, Jong-Ho 한국섬유공학회 1994 한국섬유공학회지 Vol.31 No.7

The synthesis of tetra-armed star shaped poly(tetrahydrofuran)(THF) has been attempted using pentaerythritol tetrakis(3,4-epoxybutanoate(PETE) as a precursor by photoinduced cationic polymerization. The cationic polymerization of THF was initiated by photoirradiation with 500w high pressure mercury lamp, using PETE as a precursor, in the presence of diphenylidonium hexafluorophosphate(initiator) and followed by dark reaction. The polymerization behaviors, i.e., oyo conversion to polymer, the number of arms and gel formation have been discussed in relation to reaction parameters such as concentrations of PETE, salt and THF. The number of arms in star shaped polymers were determined by dividing the molecluar weight of polymer before alkaline hydrolysis by those of after alkaline hydrolysis. The number of arms of star shaped polymers were found to be strongly dependent on the molar ratio of THF/PETE and varied in the range of 2.5-11.2. It was observed that tetra-armed star shaped polymers was obtainable in the early stage of dark reaction from the systems where the molar ratio of THF/PETE in the feed was kept at around 1000.

난연성고분자 (중합반응과 관련된 난연성향상방안을 중심으로 하여)

마석일 한국섬유공학회 1984 한국섬유공학회지 Vol.21 No.6

風景畵에서의 古典主義

마순자(馬淳子) 한국미술연구소 2002 美術史論壇 Vol.- No.14

Landscape painting is the type of work in which natural scenery is the essential visual motif. 111e classicism in art is on the other hand characterised through it's normative form with spiritual and moral meaning. The different nature of the two resulting from the naturalism of the one and formal and normative nature of the other raises me question how the two, me landscape painting and the classicism could be united and formed into me classical landscape painting and what does the 'classical landscape painting' mean. This paper aims to clarify the historical process in which the classical landscape painting had been established as a proper genre and to review some of it's conceptual features, The classical landscape painting had been formed during 16-17th century. It was also during these period that the landscape painting had been acknowledged as an independent genre in alt. In the beginning of the 18th century Roger de Piles mentioned the concept 'classical landscape painting' for the first time, He classified the classical landscape painting into 'heroic' and 'pastoral'. As the representative of the heroic he named Nicolas Poussin and the pastoral Tiziano. De Piles valued heroic landscape especially highly as the greatest classical landscape painting because of its formal strictness and moral content. But he did not estimate Claude Lorrain's landscapes as classical because he thought Claude's paintings didn't fulfill the academic norm. Through the influence of de Piles the Academy of the late 18th century in France named the heroic genre as 'the historical landscape painting' De Piles defined the classical landscape painting as the depiction, not of the appearances of nature in chance but of 'the essential qualities of nature'. He insisted that me classical landscape painting should be a composition of perfect elements. It means that the classical landscape painting should be the realization of 'the perfect beauty', i.e. the reality in itself. In this sense it has the same character as the classical art in general. It differs from them that it takes it's motive from nature. De Piles's judgements is formulated on the basis of Poussin's landscapes between 1648 and 1651. But Poussin painted landscapes in other times too, in his early years of 1630's and in the late years between 1657 and 1665. But his landscapes of theses two phases are more naturalistic and even romantic than the landscapes around 1650's. One can ask then: Are not these paintings classical? But the analysis of Poussin's landscapes in all of it's phases shows that all his landscapes have the heroic character. Only me features of me heroic are concealed under the naturalistic appearances. In this respect Poussin's early and late landscapes have similar characteristics with Claude Lorrain's landscape. But Claude's works are more naturalistic than Poussin's both in composition and expression. Both painters selected the subjects from the bible and the classical literature. But Poussin's landscapes are more strict in form and more moralistic in subject while the Claud's are more natural and poetic. In other words Poussin's paintings are heroic while Claude's are pastoral and lytic. Poussin prefered historical subjects more, while Claude depicted the natural scenes independently and transformed it into arcadian landscapes. Despite the minute differences the landscapes of both Poussin and Claude are typically classical because they prefer me general to individual, because the general represents the order and the intrinsic phenomenon of nature. In this point the two painters can be judged as same, And on this point we can reconsider De Piles view on Poussin and Claude. His concept and evaluation was not freed totally from the traditional academic view and on account of it his evaluation of Claude was not fair.

요오드화 알킬 존재하의 비닐아세테이트의 조절된 라디칼중합

마석일,남혜인,한규찬,권순홍,Mah, Souk-Il,Nam, Hye-In,Han, Kyu-Chan,Kwon, Soon-hong 한국섬유공학회 2002 한국섬유공학회지 Vol.39 No.5

Radical polymerization behaviors of vinyl acetate (VAc), initiated by N, N-azobisisobuty-ronitrile(AIBN) in the presence of several alkyl iodides(RI) such as chloroiodomethane(CIM), iodoform, and tridecafluorohexyliodide(TDFHI) have been investigated. Living natu.e, i.e., a fairly good agreement between the number average degree of polymerization of the resulting polymer (DP$_{n}$) and the theoretical value, determined by the molar ratio of VAc and RI, which is based on the assumption that one polymer molecule is formed by one molecule of RI. A linear relationship is observed between % conversion and DP$_{n}$ is observed when the molar ratio of AIBN/RI is kept at 2. The MWD of the resulting polymer decreases as % conversion increases. Polymers having narrow molecular weight distrbution (DP$_{n}$DP$_{n}$ <1.5) are obtained in the late. stage of polymerization. However, experimental DP$_{n}$ values show deviation from the theoretical values in the early stage of polymerization. This leads us to the conclusion that the living nature of the system is ascribable to the stabilization of the active propagating radical species by rapid iodine exchange with RI followed by the establishment of equilibrium between the active propagating radical species and polymer having a dormant carbon-iodine terminal group. The factors resulting in the loss of the living nature have also been discussed in conjunction with the results obtained from photo-induced polymerization.erization.

BPO-DMA 레독스 개시계를 이용한 메탄올 중에서 비닐아세테이트 저온 라디칼 용액중합

마석일,이동은,권순홍 한국섬유공학회 2001 한국섬유공학회지 Vol.38 No.5

Synthesis of high molecular weight poly9vinyl acetate) with less branched structure has been attempted by solution polymerization of vinyl acetate in methanol at $0^{\circ}C$ using a redox pair of benzoylperoxide-N, N-dimethyl aniline. Although the rate of polymerization is low at this temperature, ply9vinyl acetate) having maximum degree of polymerization of 2800 with degree of branching of 0.125 at 100% conversion was obtained.

PET 부직포를 매트릭스로 이용한 Carrier-Facilitated Transport Membrane의 금속이온 선택투과성

마석일,김용일 한국섬유공학회 2002 한국섬유공학회지 Vol.39 No.3

A new type of nonporous polymeric carrier-facilitated transport membranes supported by non-woven PET fabrics were successfully prepared by photo-crosslinking of vinyl crown ether unit of 15-membered ring and diacrylate and their selective transport of various mono-valent aqueous metal ions was investigated. It was found that the selectivity of the membranes to mono-valent metal picrate decreases in the order of Cs$^{+}$ >Na$^{+}$>K$^{+}$ which is explainable by the stability of host-guest complexation and the hydrophilicity of the membranes.ranes.