MHD WAVE ENERGY FLUXES GENERATED FROM CONVECTION ZONES OF LATE TYPE STARS

Moon, Yong-Jae,Yun, Hong-Sik The Korean Astronomical Society 1991 Journal of The Korean Astronomical Society Vol.24 No.2

An attempt has been made to examine the characteristics of acoustic and MHD waves generated in stellar convection zones($4000\;K\;{\leq}\;T_{eff}\;{\leq}\;7000\;K$, $3\;{\leq}\;\log\;g\;{\leq}\;4.5$). With the use of wave generation theories formulated for acoustic waves by Stein (1967), for MHD body waves by Musielak and Rosner (1987, 1988) and for MHD tube waves by Musielak et al.(l989a, 1989b), the energy fluxes are calculated and their dependence on effective temperature, surface gravity and megnetic field strength are analyzed by optimization techniques. In computing magneto-convection models, the effect of magnetic fields on the efficiency of convection has been taking into account by extrapolating it from Yun's sunspot models(1968; 1970). Our study shows that acoustic wave fluxes are dominant in F and G stars, while the MHD waves dominant in K and M stars, and that the MHD wave fluxes vary as $T_{eff}^4{\sim}T_{eff}^7$ in contrast to the acoustic fluxes, as $T_{eff}^{10}$. The gravity dependence, on the other hand, is found to be relatively weak; the acoustic wave fluxes ${\varpropto}\;g^{-0.5}$, the longitudinal tube wave fluxes ${\varpropto}\;g^{0.3}$ and the transverse tube wave fluxes ${\varpropto}\;g^{0.3}$. In the case of the MHD body waves their gravity dependence is found to be nearly negligible. Finally we assesed the computed energy fluxes by comparing them with the observed fluxes $F_{ob}$ of CIV(${\lambda}1549$) lines and soft X-rays for selected main sequence stars. When we scaled the corrected wave fluxes down to $F_{ob}$, it is found that these slopes are almost in line with each other.

완전대혈관 전위의 심방내 교정술 후 추적 관찰

김연우,노정일,허준,윤명자,김호성,최정연,윤용수,양세원,이정렬,김용진,노준량 대한순환기학회 1998 Korean Circulation Journal Vol.28 No.5

항균성 펩타이드인 Mastoparan B의 살조효과

서정길,김찬희,배윤정,문호성,김근용,박희연,윤호동,김창훈,변대석,홍용기,박남규 한국어병학회 2003 한국어병학회지 Vol.16 No.3

Mastoparan B (MPB)는 벌독으로부터 정제된 양친매성α-helical 구조를 취하면서 14개의 아미노산 잔기로 구성된 염기성 항균성 펩타이드로서 여러 가지 생물막과 작용한다. 본 연구에서는 우리 나라 연안의 적조 (HABs, harmful algal blooms)를 일으키는 4종의 적조생물 (Alexandrium tamarense, Chattonella catenatum)에 대한 MPB의 살조효과를 조사하였다. MPB의 4종의 적조생물에 대한 살조효과는 31.3㎍/㎖에서 세포의 lysis또는 ecdysis와 같은 형태로 현미경으로 관찰할 수 있었다. 또한 MPB는 C. marina 및 C. polykridorides에 대해서 A. tamarense와 G. catenatum보다 더욱 강한 살조효과를 나타내었다. 이러한 MPB의 HABs에 대한 살조효과연구는 새로운 살조물질을 개발하기 위한 자료가 될 것으로 생각된다. Mastoparan B (MPB), an antimicrobial cationic peptide isolated from the venom of the hornet Vespa basalis, is a basic amphipathic a-helical peptide composed of fourteen amino acid residues. In this study, we have investigated the algicidal effect of MPB against hatmful algae blooms (HABs) casative Alexandrium tamarense, Chattonella marina, Cochlodinium polykrikoides and Gymnodinium catenatum. The algicidal effect of MPB showed in the concentration of 31.3 ㎍/㎖ to 500 ㎍/㎖ against 4 HAB species and observed cell lysis or cell ecdysis by microscopy. MPB reacted more sensitive to C. marina and C.polykrikoides than A. tamarense and G. catenatum. The algicidal study of MPB against HABs will provides much insight into development of new algicidal substances.

政治體系不安要因에 관한 硏究

尹龍熙 경북대학교 사회과학대학 1983 社會科學 Vol.2 No.-

The main purpose of this paper is to study unstable factors of political system. Unstable factors of political system are several varities, that is to say; (1) insufficient or starvation demand input, (2) emergency and overload demand input, or demand input overload, (3) support input failure, diffuse support and specific support input failure, (4) limitation conversion capability, (5) output function failure, (6) feedback function failure; etc. In conclusion, unstable of political system is relation to these unstable factors of political system separately, and these unstable factors of political system are independent and influence each other closely.

한트케의 소설 『반복』에 나타난 슬로베니아 상(想)

윤용호 한국독어독문학회 2002 獨逸文學 Vol.84 No.1

Die Hauptperson des Romans Die Wiederholung heißt Filip Kobal. Sein Vorfahre ist der Slowene, Gregor Kobal, der im Jahr 1713 einer der Fu¨hrer de Großen Tolminer Bauernaufstandes war und im Jahr darauf mit seinen Genossen hingerichtet wurde. Er wird seit einem Vierteljahrtausend hier im Lande als ein Volksheld gefeiert. Seine Nachkommen wurden nach seiner Hinrichtung aus dem Isonzotal vertrieben und einen von ihnen hat es u¨ber die Karawanken nach Ka¨mten verschlagen, wo es ihm verboten war, seine Muttersprache zu sprechen. Jeder Erstgeborene wurde Generation auf Generation auf den Namen Gregor getauft. Filips Familien-Mitglieder sind der Vater, die Mutter aus Deutschland, der Bruder, die verwirrte Schwester und der Ich-Erza¨hler Filip Kobal. Vater, Bruder und Ich-Erza¨hler sind miteinander verbunden. Die Mutter und die Schwester bleiben jedoch außerhalb dieses Kreises. Filips Bewußtsein fand im heiteren Familienleben keine Wurzeln. Der Ich-Erza¨hler wurde im Jahre 1940 in einer armen und namenlosen Familie geboren. Er wird mehr von der Landkarte Sloweniens und der vergro¨ßerten Photographie seines Bruders als von der Familie beeinflußt. Er besucht die Volksschule, die Hauptschule und in einer Internatsschule das Gymnasium. Zwanzig Jahre hatte er im Innersten nichts mit den Schulkameraden gemein. Keiner war unter ihnen, der - wie der Ich-Erza¨hler - den Beruf und die Herkunft seines Vaters nicht ha¨tte angeben ko¨nne. Er begreift im Umgang mit den Kindern, daß er nicht in ihre Welt geho¨rt. Als er zwanzig Jahre alt ist, fa¨hrt er nach Slowenien und sucht eine Spur seines verschollene Bruders. Er hat zwei Bu¨cher im Gepa¨ck: ein Werkheft der Landwirtschaftsschule von Marburg und ein slowenisch-deutsches Wo¨rterbuch aus dem Jahr 1895, dem Geburtsjahr des Vaters. Sie sind "die beiden großten Lehrmeister des aufbrechenden jungen Mannes". "Das neunte Land", so heißt in der Sprache der slowenischen Vorfahren das sagenhafte Land des leidenen Volkes und das Ziel der gemeinsammen Sehnsu¨chte, erha¨lt fu¨r ihn eine tiefere Bedeutung und einen ho¨heren Wert als fru¨her. Den frommen Wunsch des Bruders nach dem neunten Land sieht er nun erfu¨llbar durch die Schrift. Er hat im Dasein verschiedene Berufe. Aber in seinem Bewußtsein gibt es kein Bild als lebenslang die leeren Ha¨nde. Am Anfang der Erza¨hlung verla¨ßt er die Heimat im Zwiespalt, nun kehrt er zuru¨ck und ist den Eltern dankbar, geboren zu sein.

남부 평야지 자운영재배답에서 논유형과 질소수준이 벼 생육 및 토양 화학성에 미치는 영향

윤봉기,김병호,이인,최형국,박인진,김용웅 한국국제농업개발학회 2003 韓國國際農業開發學會誌 Vol.15 No.3

녹비작물로서 자운영을 재배한 논에 벼를 재배할 때 질소비료의 절감기준을 구명하고자 평야지인 전남 나주의 보통답과 사질답에서 관행, 자운영+질소 70%, 자운영+질소 50%, 자운영+질소 30%, 자운영+무질소의 5처리로 1999년부터 2001년까지 3년동안 시험한 결과는 다음과 같다. 1. 자운영의 개화성기 생육은 초장 43.6~43.9㎝, 생초중 21.79~24.99Mg ha^(-1)이였으며 무기성분 함량은 T-N 2.40~2.64%, P₂O_(5) 0.42~0.46%, K₂O 1.83~2.01%였다. 자운영의 생육은 보통답이 사질답에 비하여 생초중이 많았고 T-N, T-C, P₂O_(5), CaO, MgO의 함량도 높았다. 2. 토양중 NH₄-N함량의 경시적 변화는 이앙후 7일에 20.7~47.4㎎ kg^(-1)으로 점차 감소하였는데 처리에 따라서는 자운영+질소 70%, 자운영+질소 50% 시용구에서 높았다. 3. 벼의 생육은 사질답이 보통답에 비하여 초장 및 간장이 크고 ㎡당경수가 많았고 처리에 따라서는 자운영+질소 50%, 자운영+질소 30%시용구에서 생육이 좋았다. 식물체중의 T-N, P₂O_(5), K₂O함량도 자운영+질소 70%, 자운영+질소 50%시용구에서 많은 편이었다. 4. 시험후 토양의 화학성은 관행에 비하여 보통답의 자운영 시용구에서 OM, CEC, Ava, P₂O_(5)함량이 증가하였고 사질답에서는 CEC가 증가하였다. 5. 벼의 수량은 관행(보통답 5.15Mg ha^(-1), 사질답 5.16Mg ha^(-1))에 비하여 보통답에서는 자운영+질소 70%, 50%, 30%시용구에서 각각 3, 6, 4% 증수되었고, 사질답에서는 자운영+질소 70%, 50%시용구에서 각각 3, 5%증수되었다. 6. 남부 평야지에서 자운영을 재배하여 생초 20Mg ha^(-1)를 녹비로 투입하면 벼를 재배시 질수시용 적정량을 보통답에서는 관행시비량의 30%, 사질답에서는 관행시비량의 50%이였다. This study was conducted to find out an amount of N fertilizer for rice culture followed after milk vetch(MV) cultivated at normal and sandy paddy field in Naju which lies to southern plain region from 1999 to 2001. The amounts of N fertilizer were 110(normal paddy) and 130(sandy paddy)㎏ ha^(-1) at control and 0, 30, 50, 70% of control. At flowering stage of MV, Plant height was 43.6~43.9㎝ and fresh weight was more than that of sandy paddy field. Also, the contents of T-N, T-C, P₂O_(5), CaO, MgO in MV plant cultivated normal paddy field were higher than those of sandy paddy field. Content of NH₄-N in soil was 20.7~47.4㎎ ㎏^(-1) at 7days after transplanting and 6.1~8.1㎎ ㎏^(-1) at 70days after transplanting of rice plant. Content of NH₄-N in soil was high at the treatments of MV+N50% and MV+N70%. Rice plant height, culm length and the number of tiller per ㎡ in sandy paddy field were higher than those of normal paddy field. Growth of rice plant in MV+N70% and MV+N50% was higher than that in others. And the content of T-N, P₂O_(5) and K₂O of rice plant in MV+N70% and MV+N50% were higher than those in others. Chemical properties of soil after experiment were pH 5.1~5.9, OM 15.6~20.9g ㎏^(-1). CEC 10.1~13.8cmol ㎏^(-1) and Ava. P₂O_(5) 152~244㎎ ㎏^(-1). The contents of OM. CEC and Ava. P₂O_(5) in soil applied MV at normal paddy field were higher than those of the control, and the content of CEC in soil applied MV at flowering stage, rice yields of MV+N70%, 50%, MV+N30% were increased 3, 6, 4% more than that of control (5.15Mg ha^(-1)) at normal paddy field. Rice yields of MV+N70%, MV+N50% were increased 3, 5% higher than that of control(5.16Mg ha^(-1)) at sandy paddy field. Nitrogen application rate of normal paddy field was 30%, and sandy paddy field was 50% of conventional fertilization rate when 20Mg ha^(-1) MV cultivated paddy field was inputed for rice culture in the southern plains.

위암 환자에서 위절제술후 나타나는 담도확장의 임상적 의의: 추적 CT 소견을 중심으로

윤구섭,백승연,이문규,김영환,오용호 울산대학교 의과대학 1993 울산의대학술지 Vol.2 No.1

A retrospective review of consecutive 35 patients'pre and post operative abdominal computed tomography was performed to determine frequency and degree of bile duct dilatation following Billroth Ⅱ operation for stomach cancer and it's clinical significance. Degree of intrahepatic biliary dilatation was classified as mild, moderate, marked according to the extension into central, middle and peripheral zone of liver, respectively. Three specialists on the abdominal image participated in analysis of those findings without prior information of the patients. Intrahepatic biliary dilatation was seen in 22 patients(63%) analysed by at least one radiologist, in 13 patients(37%) by at least two radiologists. Bile duct dilatation on CT was common finding and not necessarily meant tumor recurrence. Vagotomy and afferent loop resulted form Billroth Ⅱ were one of possible causes of bile duct dilatation. This study showed in the cases of bile duct dilatation without clinical and other radiological evidence of recurrence, no further study are needed and only enough to follow up study.

한국어 불규칙 용언처리를 위한 연구

윤근수,이교운,박용욱 울산과학대학 1999 연구논문집 Vol.26 No.1

한국어 정보처리를 하기 위해서는 가장 기초기술인 형태소 분석이 이루어져야 한다. 한국어의 용언은 어미의 활용으로 인하여 형태소분석을 상당히 까다롭게 하는 특성을 가지고 있으며, 대부분의 어절을 대상으로 용언의 불규칙 현상이 있는 지를 조사해야 하므로 시스템의 속도를 떨어뜨리게 된다. 따라서 이 논문에서는 용언 불규칙현상을 분류하고 알기 쉽도록 도식화하면, 전체 시스템의 속도를 높이기 위한 새로운 자료구조 도입과 알고리즘을 소개한다. Korean Morphological analysis is basic technic of Korean Information processing. Korean morphological analyzer is complicated because of irregular verbs. In this paper, we suggest analysis, diagram, and algorithm of korean irregular verbs processing. The system becomes very efficient because the number of dictionary accesses is minimized. The system makes easy to analyze unknown words like compound nouns without adding them to the dictionary.

여성 요도에서 발생한 이행세포암종 1례

윤종현,문기혁,송윤섭,박영호 순천향의학연구소 2004 Journal of Soonchunhyang Medical Science Vol.10 No.2

Primary urethral carcinoma in females is uncommon neoplasm that only 0.02% of all types of cancer in women. Understanding the feature and character of disease has helped us select proper treatment in individual case. We report a case of primary transitional cell carcinoma of the female urethra with brief review of the literature.

中共의 權力鬪爭樣相

尹龍熙 경북대학교 법정대학 1979 法大論叢 Vol.17 No.-