개인용 컴퓨터를 이용한 주파수 및 전압 감시 시스템 개발에 관한 연구

오주환,김민주 영남이공대학 산업기술연구소 1990 産業技術硏究 Vol.4 No.-

This paper presents the development of frequency and voltage monitoring system which necessarily needed on the factory automation. A personal computer system (IBM PC/AT) was used as Host computer and the microcomputer system(Z80A) was used as local processing system for the real time processing. Frequency measurement is done by the counter circuit of the PWM method during a period which installed at each channel for the purpose of reducing the waiting time, and voltage measurement is done by a A/D converter through the multiplexer.

요먼리 沒落의 再評價

吳主煥 慶北大學校 1992 論文集 Vol.52 No.-

근세초 英國農村社會의 中核으로서 영국인들이 자부하던 獨立自營農民層 요먼리(yeo-manry)의 成立과 性格에 대해서는 이미 다른 곳에서 취급된 바 있으나 그 沒落問題는 時間的인 거리때문에 취급되지 못하였다. 따라서 요먼리의 沒落問題는 그 成立과 같은 水準에서 취급될 필요가 있다 할 것이다. 뿐만아니라 다른나라들에서는 19세기말 이래 오늘날에 이르기까지 한 社會階層으로서의 存在意義를 상실하게된 요먼리의 沒落문제가 크게 論難의 대상이 되어왔으나 우리나라에선 그에 대한 연구가 전연 업는 실정이다. 그리고 英國 요먼리가 겪었던 歷史的 운명이 現下 우리나라 農民層이 겪고 있는 운명과 흡사하다는 생각을 가지고 있다. 이러한 關心에서 본고에서는 요먼리 沒落에 관한 제문제를 다각적으로 再檢討하므로써 우리나라 農民層에게 닥쳐올 운명을 전망해 보고자 한다. 요먼리 沒落문제는 學者들간에 見解를 달리하여 왔으나 그중에서도 요먼리沒落→산업노동자 創出의 原因을 둘러싼 論難이 그 中心 課題로서 마르크스주의 史家들의 見解와 부르조아 史家들의 見解가 오랫동안 대립되어 왔다. 前者는 議會인클로저(parliamentary enclosure)라는 英國政策의 강제적 수단에 의하여 요먼리는 沒落하여 勞動者로 전락하였다고 주장하는데 대하여 候者는 요먼리는 議會인클로저가 실시되기 이전에 다른 要因들에 의하여 몰락하였으며 산업노동자의 創出은 잉여人口에 의한 자연발생적인 현상이었다고 주장하고 있다. 본고에서는 먼저 요먼리沒落論의 대두와 그 內容을 개관한 다음 그 沒落의 정도와 시기, 요먼리의 性格과 法的 保障度, 沒落의 原因등을 차례로 살펴보고, 끝으로 1960년대 이래 요먼리 沒落문제를 꾸준히 추구해온 체임버스(J. D. Chambers)와 민게이(G. E. Mingay), 그리고 마르크스주의 史家인 라조니크(W. Lazonick)등의 최근의 연구를 중심으로 요먼리沒落 論爭史를 再檢討하여 요먼리와 의회인클로저와의 관계를 밝혀보고자 한다. The time-honoured debate on the decline of yeomanry has been afresh raised by bourgeois historians such as J.D.Chambers, G.E.Mingay and D.S.Landes on the one hand and by Marxist historians such as E.P. Thompson and W.Lazonick and local historian W.G.Hoskins on the other. This article aims to clarify the unexhausted problems of the decline of yeomanry by reexamining of many-sided angles of the decline of yeomanry, that is, its declining period, extent and causes as well as legal protection of copyholders and impact of parliamentary enclosure and population growht on the decline of yeomanry in terms of having an insinght into fortunes of peasants in Korea, who are facing with the storm of Urguay Round. The reappraisal will be summarized as follows; The view on the first half of the 18th century among views on the declinning period seems to gain great support from scholars who have made statistical case studies. This writer, however, feels that this view has to be supplemented by further local studies throughout the country. The extent of its decline amounted to abort 50% during the period from the end of the 17th century to 1750s, when the typical yeomanry has lost its significace of a distinct social class as a historical category. And the causes of the decline were various in short and long-term factors; uncertainty of legal protection of copyholders, heavy war taxes, fall of corn prices, enclosures by agreement and by parlinament which Marxists stressed, partible inheritance system and growth of population in the 18th century which bourgeois historians emphasized. Lastly, just as the fortunes of yeomanry had badly depended on the interference of state power, parliamentary enclosure, so the fate of peasants in Korea will depend on the interference of national power, the Urguay Round. Already considerably declining peasant in Korea are liably to trace the same fate as yeomanry in the 18th century England, if they won't be sided by the protection of national policy.

변이주인 Trichoderma reesei YC-3156이 생산하는 Cellulase에 관한 연구

오두환,안순철,유주현,허남윤 연세대학교 산업기술연구소 1987 논문집 Vol.19 No.2

After the treatment 15 strains of Trichoderma sp. and 4 isolates with N-methyl-N´-nitro-nitrosoguanidine, T. reesei YC-3156 among the mutants showed the highest cellulase activity. The Avicelase of T. reesei YC-3156 was purified by 70% ammonium sulfate fractionation, dialysis, DEAE-Sepharose column chromatography and Sephadex G-100 Gel-filtration. With the result of the procedures, its purification degree was 13 folds, yield 9.3% and specific activity 0.9 unit/mg. The homogeneity and the molecular weights of the purified Avicelase were determined by SDS-polyacrylamide gel electrophoresis, it was electrophoretically homogeneous and showed the molecular weights of 46,000-48,000. The purified Avicelase was stable between pH 4.0 and pH 5.0 and it was inactivated rapidly above 60℃.

Tawney敎授의 近代社會觀

吳主煥 경북대학교 1968 論文集 Vol.12 No.-

This thesis is intended as a brief evaluation of Professor Tawney's view on the modern (capitalistic) society. Richard Henry Tawney, as a great historian, thinker and humanist, made epoch-making achievements through his scholastic works. His study of the 16th century made such a great impact that the century is often called Tawney's century". His works were motivated by his serious consciousness of the need to reform conflicts and vice in the modern society through analyzing its essence in the light of history. He attempted to investgate the modern society in terms of relation between economy and religion. His theory was based on the conviction that economic categories of the modern society along with religion have been the most potent force in giving its character. The gist of his theory on modern society can be summarized as follows; ① The modern society after the Glorious Revolution became absolutely irreligious without internal union with religion. ② Religion, which ceased to be the master interest of mankind as a result of triumph of religious indifferentism and economic virtues, has dwindled into a part of an individual life. ③ On the other hand, material riches has become the supreme object of human endevour, and economic expediency is regarded as the final criterion to estimate human interests and activities. ④ The modern society in which economic activities claim the supreme object of all human being interests and activities, resulted in estrangement of humanity and value inversion. Professor Tawney criticized severely that the irreligious and inhuman modern society is one of fetish worship and idol worship of material riches. He laid stress on the role of religion in reforming vicious elements and in reralizing social justice in the modern society.

東西洋의 二大提督 : 忠武公과 Nelson Yi Sun-sin and Horatio Nelson

吳主煥 慶北大學校 文理科大學 1974 文理學叢 Vol.2 No.-

While Admiral Yi Sun-sin, hero of Im-jin war(1592-98), has been worshipped as a great national hero, the hero-worship might be in danger of degenerating into national parochailism and chauvinism, if it would be connected with darker aspect of nationalism. This writer, therefore, has thought it necessary to make a study of Admiral Yi in world perpective to correct (aufheben) some blind patriotism, egocentrism on the one hand and foreign-oriented mind on the other and to examine his relative greatness and proper position in naval history of the world. This aticle is a comparative study of Admiral Yi with Horatio Nelson, hero of Trafalgar(1805), in dealing with their respective genius and ideas, great achievements (three major naval battles of both) and characters. etc. The following may be stated as a summary of this article; Through this comparisons, simiralities and differences between Admiral Nelson and Yi are observed. Their similarities are found in their staratigies of annihilation, patriotism, and great naval victories at the cost of life, and their differences are in personal character, scholarship and various non-militray activities. The Admirals ennobled the idea of duty, chose the high path of patriotism pursuing it to end, and ensured fo their fatherlands mastery of seas which was unchallenged for more than a century. Both of them left the same legacy of heroism and devotion to their countries that can hardly be excelled. To be sure, Nelson was the greatest of sea heroes in the world history and superman on the quarterdeck. However, he was a man with many of human frailities. In contrast with Nelson, Admiral Yi was not only a fleet commander but also a great scientist, eminent scholar, well-known filial devotionist and virtuous man of character. He was a fleet commander of an effiminate country who had to play many-sided roles in construction ships for himself, manufacturing arms, recruiting seamen, producing provisions and providing assylums for refugees. In consideration of his many-sided genius and roles, this writer believes that Admiral Yi may be no less greater than Nelson whose fame seems to be owed much to Great Britain as a powerful naval empire and egocentric western history. Consequently, he might say that Admiral Yi deserves to be placed in the same position in Asian history as Nelson in western history.

『Yeomanry 消滅考』

吳主煥 慶北大學校 1971 論文集 Vol.15 No.-

This thesis is an attempt to approach the true nature of modern (capitalistic) society by examining the disappearance of yeomanry. A little work has been done by this writer on the subject of "A Consideration on the Yeomanry-Especially in the Process of Its Growth and Defining Its Concept," and now it remains as an unaccomplished task for him to consider the process of the stratification of yeomanry and its disappearance. Why and when did yeomanry disappear? Two things must be considered before we can answer these questions; the historical characteristics of yeomanry and a survey of the theories of the disappearance of yeomanry by scholars. As the parcelling peasantry (parzellen Bauern) typical yeomanry has dual, transitional and self-destructive characteristics and plays its historical role in the transitional period between the dissolution of feudal land-ownership and the establishment of a modern capitalistic system (from 16th century to 19th century). On the disappearance of yeomanry, different views have been expressed by scholars who differed from one another in their definition of its conception, in the historical sources of evidence analized, and in their opinion of causes. Their opinions of the true period of the disappearance of yeomanry range from ① the first half of the 18th century, ② to the latter half of the 18th century and ③ to the first half of the 19th century after 1815. The first view appears to have wider support of scholars who have made partial, sectional studies about yeomanry by statistical analysis. The following may be stated as a summary of this thesis; With Tudor Enclosure and a great shift in the land-ownership caused by the dissolution of Monasteries and the English Revolution, yeomanry which was already in the beginning process of stratification in the 16th century was further accelerated into dissolution and began to disappear from the society. The stratification of yeomanry, along with Paliamentary Enclosure and the Industrial Revolution, was completed by the time the capitalistic system (tripartite division) was firmly established. However, the exact period of the disappearance of yeomanry can be stated only after precise definition of its conception and further partial, sectional studies expanded on a national scale are made by statistical analyses.

Streptobacillus sp.가 생산하는 pullulanase에 관한 연구

오두환,지희숙,최형택,신원철,유주현 연세대학교 산업기술연구소 1986 논문집 Vol.18 No.2

A bacterium with the highest pullulanase activity was isolated from the soil and identified as Streptobacillus sp. Y-716. The optimum culture condition of Streptobacillus sp. for the production of pullulanase was as follows; 1.2%(w/v)soluble starch, 0.7%(w/v) CH₃COONH₄, 0.05%(w/v) MgSO₄7 H₂O, 0.01%(w/v)FeSO₄7H₂O, at 30℃, for 48 hrs. The pullulanase from the culture broth of Streptobacillus sp. Y-716 was purified about 46 fold by ammonium sulfate precipitation, dialysis. DEAE-cellulose and Sephadex G-200 column chromatography. The purified enzyme was stable between pH 5.0 and pH 7.5. It was inactivated rapidly above 35℃. The Km value and Vmax of the purified enzyme were 0.0137mg/m/ and 0.666μm/min. on pullulan, respectively.

Plasmid DNA pBR 322의 증폭과 Hydroxyapatite Chromatography에 의한 분리

오두환,유주현,신원철,정건섭,유승구 연세대학교 산업기술연구소 1984 논문집 Vol.16 No.1

The amplification and the isolation conditions of pBR322 plasmid DNA were investigated. For the amplification of pBR322 plasmid DNA, cells from logarithmic growth phase were most effective. The optimal conditions for the amplification of pBR322 plasmid DNA in Escherichia coli GM4 were obtained as follows; 50-150 ㎍/ml of chloramphenicol concentration, 6-8 hours of incubation time in the presence of chloramphenicol. Ampicillin and tetracycline had no effect on the amplification of pBR322 plasmid DNA. Approximately 1 mg of pBR322 plasmid DNA was purified from 3.5 ℓof Escherichia coli GM4 culture broth by hydroxyapatite chromatography. The purified pBR322 plasmid DNA was expressed in Escherichia coli C600.

YEOMANRY考 : Especially in Process of Its Growth and Defining Its Concept 特히 그 成立過程 및 槪念規定을 中心으로

吳主煥 대구교육대학교 1966 論文集 Vol.2 No.-

It is all but impossible for us to explain in a few words the substance of the vast mechanism of modern (capitalistic) society, due to the complexity and variety of phases interwoven within it. Though we attempt not to seek a unique law in the progress of history, can't we, however, discover the existence of "primummobile" from which the complex historical phenomena are derived, if we are going to study from a certain historical viewpoint? And can't we, by doing so, arrive with relative ease at the core of the problem? If so, in what may we find its motivating factors? This approach, I believe, is the most important method to understand the law of progress of history. This thesis, a thrift attempt in this attitude, is intended to clarify the concrete image, concept and characteristics of the yeomanry by historical research. The period given in this thesis is the transitory between the dissolution of feudal land-ownership and the ensuing modern society on the heels. Therefore we must focus our attention on the 15th century(1381-1489), that marks an epochal point in England's social and economic changes. As we know since yeomanry is the spontaneous offspring of the dissolution of feudalland-ownership, its ideal type will not be clearly appreciated without basic knowledge of the characteristics and its dissolving phases of feudal land-ownership. The The characteristics of feudal landownership came to its inevitable dissolution when the labor rents shifted into commutation. In process of commutation the favorable situations of villein emancipated themselves from the compulsory system and rents of feudalism and converted themselves in various ways into more stable land-owners, that is, customary tenants, copyholders and leascholders. Yeomanry was constituted of mainly customary tenants, copyholders as well as the original freeholders of yearly revenue of more than 40 shillings. The typical yeomanry as historical category is to be defined as independent self-sustaining small land holder (unabhangiger selbst-wirtschaftender Bauer) who cultivated his own land with his own labor and practiced his initiative on the agricultural management, and who managed the main production of grains supplemented by secondary grazing on the greater portions of open fields in line of common routine of cultivation. Now as a conclusion several facts can be pointed as following; The spontaneous offspring of the yeomary on a vast scale shows us manifestly and focussingly the characteristics of the dissolving process of England's feudalism and the initiating point of the desirable future of capitalistic developments in England. It may be sure the presence of the yeomanry is also, as in many other case in history we can often find, an example of the law of contradictions contained in history. That is, yeomanry took on transitory and dual characteristics, causing the dissolution of feudalism thus paying the way for latter-day English modern (capitalistic) society.

蒼附導痰丸이 白鼠의 排卵에 미치는 影響

강복환,박종문,박경미,조한백,엄주오,유심근 한국전통의학연구소 2003 한국전통의학지 Vol.13 No.1

Changbudodamhwan(CBH) is used in female infertility caused by ovulation disorder. An attempt was made to evaluate the influences of CBH on the serum concentrations of FSH, LH, estradiol(E_(2)) and progesterone, the histological and optical changes of ovary, ovary weight of rats. The results of the study were as follows : 1. Blood FSH level increased experimental group as compared with control group, which showed no efficacy. 2. Blood LH level increased in experimental group as compared with control group, which showed no efficacy. 3. Blood E_(2) level increased in experimental group as compared with control group, which showed no efficacy. 4. Blood progesterone level increased in experimental group as compared with control group, which showed no efficacy. 5. In optically observations of ovary, weight of ovary increased in experimental group as compared with control group, which showed no efficacy. 6. In histological observations of ovary, ovulation increased in experimental group as compared control group, which showed efficacy. According to these results, CBH influence on the ovulation and ovary of rats.