Isonicotinic acid hydrazide의 in vitro 및 in vivo 적용이 nicotinamide adenine dinucleotide analogue 형성에 관한 연구

유석형 中央醫學社 1940 中央醫學 Vol.9 No.6

Insonicotinic acid hydrazide (INH), a potent anti-tuberculous compound, was first reported to form a INH analogue with nicotinamide adenine dinucleotide (NAD) in the tissue homogenate by Zatman et al., and it was suggested that the formation of such a INH analogue may be of significance in explaining the clinical anti-tuberculous action of INH. The species specificity of the animal NADase with respect to INH analogue formation was also reported. It is possible that both the "sensitive" and "insensitive" NADases react in the same manner to the INH and from INH analogue of NAD, and in case of the "insensitive" such a analogue is formed in relative large amounts. The knowledge on the human tissue NADase with respect to INH is still very poor except a few references on the prostata and spleen NADase is available, and much desired to be studied. The author made a study on the formation of INH analogue of NAD in human erythrocytes, as well as cell free systems of mouse liver, spleen, brain and lung. 1. In vitro formation of INH analogues of NAD in human erythrocyte homogenate and in subcellular fractions of mouse liver has been demonstrated. 2. In the subcellular fractions of mouse liver, the main part of the synthetic activity of INH analogue of NAD was found in motochondrial and soluble fractions. 3. The transglucosidase activity of NADase from human erythrocytes was demonstrated by measuring the ability of the homogenate of erythrocytes to synthesize isonicotinic acid hydrazide adenine dinucleotide. 4, The NADase of human erythrocytes is relatively "insensitive" to INH. 5. The tissues-i. e. liver, brain, spleen and lung, which were pretreated in vivo with NAD, give rise a high synthetic activity of formation of INH analogue of NAD, while the activity in the control group is much lower.

동적응답신호를 이용한 건축물의 손상추정기법

유석형 한국구조물진단유지관리학회 2013 한국구조물진단유지관리공학회지 Vol.17 No.4

시인의 자아와 창조적 상상력 : W. B. Yeats의 “Among School Children”을 중심으로

유석형 한국예이츠학회 1999 한국예이츠 저널 Vol.11 No.-

In this paper, through appreciating one of W. B. Yeats’s later poems, I try to find how the poet’s creative self gets to have its creative power and in what mechanism it expands its poetic circumference. “Among School Children” is the very poem his poetic self and creative imagination are well wrought into. In the poem, the poet suggests that power and knowledge cannot exist together, speaking of the powerful theories of Plato and simultaneously of the philosopher’s powerless being before Nature. He praises Aristotle as a king of kings, and Pythagoras as world-famous golden-thighed, but he mocks them of being old clothes upon an old stick to scare a bird. In the same way, he asserts that “the body is not bruised to pleasure soul.” In the sense of deconstructionists, all the binary oppositions have their hierarchies; however, Yeats puts the two antithetical elements on the identical level, as they are not subordinated to each other, and tries to bridge the abyss or space between. Such an attempt to unite the opposite worlds is manifested in his A Vision. Concerning his “gyre” theory, the figure is frequently drawn as a double cone. The one is called primary gyre, representing space, intellect, mask and fortune; the other antithetical one to represent time, emotion, creativity and will. The narrow end of each cone is in the centre of the broad end of the other. Seen at the narrow end of each cone through the centre of each broad end, appears a circle having a dot at the center. This is the poet’s world of imagination whose centre is his “self” and whose circumference is the limit of the self’s perception. The poet’s life-long activities are related with his efforts to expand the circumference. “Among School Children” is a trace of such activities. The centre is the place where the self of the poet is located; the circumference is where the self “perceives its limitation,” or where arises the feeling of awe, terror, or ecstasy, which means a kind of tension geared between the binary opposite worlds: the finite and the infinite; the mortal and the immortal; life and death; the real and the ideal; youth and age; the body and soul; pleasure and despair. The perception network of the poet connects the centre and circumference. The power to widen the circle originates from the poet’s paradoxical sense of life, of deprivation, and of renunciation through an attainable love with Maud Gonne, tensions between religious struggles, civil revolutions, and so on. The sharp confrontation of these tensions takes place rise to in the circumference and stimulates the poet’s creative imagination. This power of self strengthened by these tensions starts its quest-journey to explore the mysteries beyond the limit of its circle: the mysteries of the opposite worlds separated here and there. The ultimate purpose of the journey, finally, is to reach the united condition of the two worlds, which means what Greg Johnson calls “the highest imaginative enhancement of human identity” or immortality. This united world is the place where “we cannot know the dancer from the dance” and where Yeats’s “unity of being” is synthesized.

豫想된 通貨의 實物經濟效果에 대한 實證分析

柳奭馨 연세대학교 산업경영연구소 1992 산업과경영 Vol.10 No.1

合理的 期待論者(rational expectationist)들 期待된 通貨(expected money) 또는 豫想된 通貨(anticipated money)는 實物生産에 영향을 주지 않는다고 주장한 이후 않은 경제학자들이 이 이론에 대해 비판을 하였다. 중요한 비판중 하나는 합리적 기대론자가 사용하고 있는 總供給兩數가 너무 단순하며, 총공급에 영향을 줄 수 있는 이자율, 자신, 또는 조세부담율 등의 중요한 요인들이 총공급함수에서 간과되어 있파는 것이다.

동적응답신호를 이용한 전단형 건물의 손상추정

유석형 대한건축학회지회연합회 2013 대한건축학회지회연합회 학술발표대회논문집 Vol.2013 No.1

大陸橫斷鐵道와 歐洲 定期船社間의 運送競爭力 比較

柳奭馨 韓國海洋水産開發院 1992 (월간) 해양수산 Vol.- No.98

웨이블렛 변환을 이용한 건물의 손상추정을 위한 소형 진동대 실험

유석형,송진규 대한건축학회지회연합회 2012 대한건축학회지회연합회 학술발표대회논문집 Vol.2012 No.1

W. B. 예이츠의 시세계에 나타난 상징과 원효사상 비교연구

유석형 한국예이츠학회 2003 한국예이츠 저널 Vol.20 No.-

The focus of study in this paper is put on the comparison of symbolism manifested in the world of W. B. Yeats’ poetry and the thoughts of Master Won-hyo.. The comparing works include the identification of their understanding ways of life. The symbols in common to bridge W. B. Yeats and Master Won-hyo are, for instance, circle, cone, cycle, sphere, spiral, wheel, vehicle, etc. Such a sign symbolizes a round thing, in another expression, the world or the cosmos where man belongs to. The phenomenological world or the cosmos by oriental thoughts is represented as the 28 phases of the moon, ranging from the dark moon(objectivity) to the full moon(subjectivity), which according to W. B. Yeats’ theory are identified the same kinds of character of man. Won-hyo(元曉, 617~686), a life-long friend of another Buddhist Master Ui-sang., insisted on the necessity for every living being to return to the foundation of the One Mind(一心), which is the original state of being, in another words, or “Ultimate Reality” to which every living being has to return. The Hwa-yen Sutra(華嚴經), a rare scripture of Mahayana Buddhism(大乘佛敎), emphasizes that the Ultimate Reality is the Source of One Mind of Won-hyo. We can say that Mahayana Buddhism teaches every living being the way to return to the world of the Ultimate Reality by great vehicle of Mahayana(大乘) in sanskrit. Another principle of Hwa-yen philosophy may be expressed as All in one, one in all. One is all, all is one(一中一切一切中一, 一卽一切一切卽一). The Six Aspects(六相) is interpretated by the principle. The mutual relationships are harmonized between the whole and a part, between the unity of the whole and the diversity of the part, and between the completion of the whole and the self-denial of the part. The One Mind is synonymous with the Great Vehicle with great wheels, which return to the Source of One Mind, the original state of being, or the Ultimate Reality( or Nirvana). The meaning of the One Mind may be expanded to the synonym of the existential world or the cosmos, at the center of which the One Mind lies. Accordingly, The One Mind, the Great Vehicle or Great Wheel and the World has a similar analogy, which make a system of symbolism, so called “Yeatsian gyre theory.” Yeats imagined a spiral, which he preferred to call a gyre) or whirling cone. Then two such cones were drawn and considered to pass like the human soul through a cycle from subjectivity to objectivity. These cones were imagined as interpenetrating, whirling around inside one another, one subjective, the other objective. The cones were not restricted to symbolizing objectivity and subjectivity. They were beauty and truth, value and fact, particular and universal, quality and quantity, abstract and concrete, and the living and the dead. Yeats thought that he had discovered in the figure of interpenetrating gyres the archetypal pattern which is mirrored and remirrored by all life, by all movements of civilization or mind or nature. Man or movement is conceived of as moving from left to right and then from right to left. No sooner is the fullest expansion of the objective cone reached than the counter-movement towards the fullest expansion of the subjective cone begins. These movements slide to the 28 phases of the moon. The dark moon, in the course of wane and wax sways to the full moon. The different 28 patterns of the moon is mirrored by all life or mind, ranging from the highest state of subjective mind(the 15th phase: the full moon) to the highest cast of objective mind(the 1st phase; the dark moon). In the long run, the world which Won-hyo and Yeats seek for as an ideal space of mind is a unified one, into which melted are the binominal opposites such as objectivity and subjectivity, the sacred and the profane, the bishop and Jane, fair and foul, the dancer and the dance, beauty and truth, value and fact, particular and universal, quality and quantity, abstract and concrete, and the living and the dead.

동북아 물동량 증가와 군산항 발전전략

유석형 長安大學 2012 長安論叢 Vol.33 No.-

단열모르타르를 이용한 고강도콘크리트 기둥의 폭렬저감 방안

유석형,임서형 한국화재소방학회 2011 한국화재소방학회논문지 Vol.25 No.6

High Strength Concrete (HSC) has a disadvantage of the brittle failure under fire due to the spalling. The studies on spalling control method of new constructed HSC buildings were performed enough,but the studies on existing buildings are insufficient. The new inorganic refractory mortar is developed in this study. The insulating capacity is enhanced by using light weight fine aggregate and polypropylene (PP) fiber. In results of material test, the thermal conductivity of light weight fine aggregate get lower than general fine aggregate. And in results of column test, the fire resisting time is delayed 20 minutes by using light weight fine aggregate, 10 minutes by increasing finishing depth from 10 mm to 20 mm and 4 minutes by using 0.6 % PP fiber. 고강도 콘크리트는 구조적인 장점에도 불구하고 화재 시 폭렬과 함께 취성적인 파괴를 나타내는 단점으로 인하여 실구조물에 적용 시 주의하여 사용하여야 한다. 신축되는 고강도 콘크리트구조물의 폭렬제어를위하여 많은 연구가 진행되어 왔으나, 사용 중인 고강도콘크리트 구조물의 폭렬제어방안에 대한 연구가 부족한 실정이다. 본 연구에서는 사용 중인 고강도 콘크리트 구조물의 내화성능을 향상시키기 위한 내화 마감재로서 미세공극과 유기섬유를 활용한 공극구조의 개선으로 단열성을 확보한 신개념의 무기질 내화 모르타르를 개발하고자 한다. 잔골재 종류, PP섬유 혼입량 및 마감두께를 변수로 하는 내화모르타르에 대한재료시험 및 실구조물에 대한 내화시험을 통하여 내화성능을 평가하였다. 재료시험결과 다공질의 경량골재를 사용한 모르타르의 열전도율은 일반 잔골재에 비하여 크게 낮아졌으며, 기둥부재 내화시험결과 경량잔골재의 사용으로 내화시간이 20분, 마감두께를 10 mm에서 20 mm로 증가시킬 경우 10분 그리고 PP섬유를 0.6 % 혼입함으로써 4분 증가하였다.