THERRESTRIAL IMPACT CRATERING CHRONOLOGY: A PRELIMINARY ANALYSIS

Moon, Hong-Kyu,Mi, Byung-Hee,Fletcher, Andre-B.,Kim, Bong-Gyu The Korean Space Science Society 2001 Journal of Astronomy and Space Sciences Vol.18 No.3

We have recently compiled a database of the properties of 192 impact craters, which supercedes previous compilations. Using our database, the impact structures found in North America, Europe and Australia have been examined; these cratonic areas have been relatively stable for considerably long geological periods, and thus have been best preserved. It is confirmed that there is a close correlation between the geological epoch boundaries, the epochs of mass extinctions, antral the "timing" of impacts. In addition, the terrestrial cumulative flux of objects >20km is found to be $1.77{\times}10^{-15}km^{-2}yr^{-1}$, over the last 120 Myr, which is much smaller than the published values in McEwen et al. (1997) and Shoemaker (1998) ($5.6{\pm}2.8{\times}10^{-15}km^{-2}yr^{-1}$. For terrestrial impact structures with D> 50 km, the apparent cumulative flux over the last 2450 Myr is ~50 times smaller than the corresponding value for the Moon. If we assume that the Earth and the Moon suffered the same level of bombardment over this time, this would mean that the actual flux of impacting bodies, capable of making craters with D)50 km, was ~ 50 times larger than the apparent flux estimated from the currently known terrestrial records.

성조형 실현 규칙의 임의화와 16세기 말엽의 성조 체계

이문규(Lee, Moon-Kyu) 한국어문학회 2017 語文學 Vol.0 No.137

The Incapacitation of the actualization rules of the tonal pattern (TP) reveals the remarkable changes since the “side-dot” began to be used in the documents in the history of Korean tonal system. It is noted that no other significant changes occurred in the level of morphemic TP or combination of TP in the same period. The actualization rules of TP consists of the “pitch-assignment rules” and the “pitch-adjustment rules.” These actualization rules in Korean were gradually incapacitated toward the end of the sixteenth century. During the mid-fifteenth century, the surface TP of a phonological word was aligned with the actualization rules of TP. However, it brought the changes at the end of sixteenth century, affected by the incapacitation of the pitch-assignment rules and the pitch-adjustment rules. The incapacitation of the actualization rules of TP has blurred the distinction between tonal patterns and pitches. Additionally, this phenomenon is interpreted to cause the dephonologizing of Korean tones. In conclusion, the incapacitation of the actualization rules of TP shows that the second stage of tonological changes of Korean language had already appeared in the end of the sixteenth century. It seems reasonable to argue that the tonal system in the sixteenth century should be distinct from that of the mid-fifteenth century. Until the sixteenth century the incapacitation of the actualization has been complete, as the source materials maintain the morphemic TP system and the first stage of tonological pattern in the fifteenth century.

플라비아닌산을 이용한 클로르프마진의 용매추출 분광광도법

정문모,남수자,이미나,이지연,허문회,안문규 慶星大學校 1998 論文集 Vol.19 No.2

‘말(語)-류’ 성조형의 방언 간 대응 양상과 의의

이문규(Lee, Moon-kyu) 한국어문학회 2015 語文學 Vol.0 No.128

This study examines the correspondence aspects of ‘mal(語)-pattern’ and direction of change of tonal system in the Korean tone dialects. The correspondence aspects of the surface tonal patterns of ‘mal(語)-class’ in middle Korean and several modern tone dialects are may be summarized as follows. [표참조] After considering the aspects, we can realize the fact that there is a tendency for ‘mal(語)-pattern’ to be integrated into ‘mal(斗)-pattern’ or ‘mal(馬)-pattern’ in Korean tonology. The ‘mal(語)-pattern’ [HLLL] of Yukjin dialects is the result of the change ‘[RLLL] >[HLLL]’. And ‘mal(語)- pattern’ [HHLL] of the young generation of Daegu dialect is the the result of the change ‘[RHLL] > [HHLL]’. Both [HLLL] and [HHLL] are ‘mal(斗)- pattern’ in those dialects. On the other hand, [LHLL] of Jinju dialect is ‘mal (馬)-pattern’. At the pitch system level, this integrating phenomenon of ‘mal(語)-class’ is the process in which ‘rising’ or ‘lowest’ pitch extinct because of their articulatory difficulties. And at complexity class of tonal system, this phenomenon implicate that three-tonal patterns system of Korean tonal dialects changes to two-tonal patterns systems, and ultimately these dialects are changing to non-tone language.

국어 성조 체계의 ‘말(馬)’-형 선호 경향과 그 의의

이문규(Lee, Moon-Kyu) 한국어문학회 2018 語文學 Vol.0 No.141

Among several tone patterns in the Korean tone system, there is a tendency for the ‘mal(馬)’-pattern to have the strongest preference. This is based on the following several tonal phenomena: 1) All three replacements of tonal patterns that are common in the middle Korean and the modern Korean tone dialects aim the ‘mal(馬)’-pattern. And these replacements have been expanded with time. 2) The ‘mal(馬)’-pattern is the common tonal pattern of all the symbolic words in both the middle Korean and the modern Korean tone dialects. 3) The ‘mal(馬)’-pattern shows a significantly higher share in the tonal patterns of Sino-Korean family names than in the sound of Chinese characters used for other words. 4) The ratio of the ‘mal(馬)’-pattern has diachronically increased in the tonal patterns of Sino-Korean words. It is reasonable to assume that the preference for the ‘mal(馬)’-pattern should go back to the period when the pattern was with the initial-low-tone since it is phonetically the most unmarked tonal pattern. Furthermore, it can also be assumed that the tone systems of the middle Korean and the Hamgyeong-dialect group with the ‘mal(馬)’-pattern in the initial-low-tone, are the closest to the proto-Korean tone system.

달 탐사선의 발사 요구조건 및 임무궤도 사례연구

석병석(Suk, Byong-suk),민승용(Min, Seung-yong),권재욱(Kwon, Jae-wook),김창균(Kim, Chang-kyoon),문상만(Moon, Sang-man),최수진(Choi, Su-jin),구철회(Koo, Cheol-hea),김인규(Kim, In-kyu),류동영(Ryu, Dong-young) 한국항공우주연구원 2015 항공우주산업기술동향 Vol.13 No.2

시험용 달 궤도선의 발사 요구조건 사전 분석 단계로 최근 외국에서 발사한 달 탐사선의 발사 요구조건을 분석하였다. 일반적으로 달 탐사선의 발사 요구조건은 달 임무 궤도를 결정하는 중요한 요소이며, 또한 지구, 달, 태양의 상대적인 운동으로 인해 임무궤도 요구조건을 만족하는 발사 가능 시간이 주기적으로 반복되는 경향이 있다. 분석 결과 설정된 발사 요구조건들로부터 달 궤도선의 주 임무가 달의 남/북극 지역의 광학 관측 임을 간접적으로 알 수 있었다. 향후 우리나라 달 궤도선 발사 요구 조건 설정에 본 논문이 도움이 되길 기대한다. In the preliminary study on launch window requirement for Korea Path-finder Lunar Orbiter(KPLO), the recent foreign lunar orbiter’s lauch window requirement was analyzed. Normally, the launch requirements depends on the mission orbit. Based on the relationship between Moon, Earth, and Sun, the launch time will be available periodically to meet requirements. In this paper, it is understood that the launch window requirements come from payload mission requirements to take picture each poles of Moon. This paper might be a practical example to derive KPLO launch requirements in the future.

小兒 急性絲述體腎炎에 있어서 血淸 免疫글로불린에 關한 硏究

文松洙,韓圭炯,明槿哲,文炅來,羅昌洙 조선의대 1984 The Medical Journal of Chosun University Vol.9 No.1

생선 가시로 인한 소장 천공 및 복강내 농양 1예

문성수,이수형,이은아,박성한,이준식,홍현진,신은경,김규종 고신대학교의과대학 2007 고신대학교 의과대학 학술지 Vol.22 No.1

A variety of swallowed foreign bodies are seen in gastrointestinal tract. However 80-90% of objects usually pass spontaneously through the alimentary tract and out in the feces and 10-20% removed without complication endoscopically. Therefore about less than 1% of foreign bodies ingested only require surgery due to complications, such as perforation, obstruction. Perforation of the gastrointestinal tract is a well-recognized complication of the foreign body ingestion. The most common site is ileum. Unfortunately, the diagnosis of small-bowel perforation by foreign bodies is rarely made preoperatively because the clinical symptoms are usually nonspecific or mimic other surgical conditions, such as appendicitis, diverticulitis, and perforated peptic ulcer etc. We report here a rare case of the small bowel perforation with mass-like intraabdominal abscess by fishbone ingestion in 59-year-old man who presented with a non-tender palpable mass in the left paramedian area and underwent abdominal computer tomography initially reported as showing intraabdominal mass.

Wide open lateral cephalogram을 이용한 하악골 성장에 관한 연구

문성욱,박영국,정규림 대한치과교정학회 2001 대한치과교정학회지 Vol.31 No.1

교정치료를 함에 있어 하악골의 모양, 성장율, 성장방향에 대한 예측은 치료계획의 수립 및 치료기간과 예후를 결정하는데 있어 중요한 역할을 한다. 이를 규명하기 위해 다양한 방법들이 시도 되어왔고 측모두부방사선규격사진을 이용함으로써 좀 더 정확성을 기할 수 있게 되었다. 그러나 해부학적인 구조의 특성상 하악과두 부위에서 중첩이 발생하여 정확한 형태 및 위치의 측정에 의문이 남는다. 이 연구의 목적은 하악과두 부위에서 중첩을 피하여 좀 더 정확한 하악골의 형태 및 성장양상을 알아보고자 함에 있다. 이 연구는 1급 부정교합군 14명, 2급 부정교합군 9명, 3급 부정교합군 17명, 총 40명의 환자를 대상으로 평균 4년 3개월의 기간을 두고 최대개구상태의 측모두부방사선규격사진(Wide open lateral cephalogram)을 촬영하여 11개의 계측항목을 설정, 계측하였고 Autocad R14 program을 이용하여 평균적인 외형을 작도하고 측면적을 계측하여 비교, 분석하였다. 그 결과 다음의 결론을 얻었다. 1.하악체의 길이(gonion-menton)는 3급, 1급, 2급 순으로 증가추세를 보였고 3급 부정교합군이 2급 부정교합군에 비해 2배 이상 증가하였으나 통계학적으로는 3급 부정교합군과 1급 부정교합군, 2급 부정교합군과 1급 부정교합군 사이에는 유의성이 있었고 3급 부정교합군과 2급 부정교합군 사이에는 유의한 상관성이 없는 것으로 나타났다(P〈0.05). 2.Go-Me, A-Cd, B-Cp, E-F, G-H, 측면적의 항목에서 연 평균 성장량, 성장속도 들에서 3급 부정교합군에서 많은 증가를 보이고 특히 2급 부정교합군에 비해서는 명확한 차이를 보이고 있다. 3.평균 4년 3개월 동안의 하악골 측면적의 연 평균 성장량은 1급 부정교합군이 1.0cm2, 2급 부정교합군이 0.8cm2, 3급 부정교합군이 1.4cm2이고 성장율은 11.9%, 11.8%, 20.3%로 1급 부정교합군과 2급 부정교합군에서는 별 차이가 보이지 않았고 3급 부정교합군에서는 다른 두 군에 비해 2배에 가까운 성장율을 보였다. 이상의 결과에서 부정교합의 유형에 따른 하악골의 성장량의 차는 선천적인 악골의 크기에 의해서 라기 보다는 성장 중 발생하는 하악골의 성장속도와 성장량의 차이에 의한 것으로 사료된다. In proceeding with orthodontic treatment, the prediction for the shape, growth rate and growth direction of mandible plays a major role to set up the treatment plan and determine its period and prognosis. Various approaches being made so far have shown that the linear and angular measurement using lateral cephalograms are relatively accurate to estimate them. This study was purposed to find the shape of mandible more clearly by preventing the overlap of the Condyle head area which appears in lateral cephalogram, and to estimate its growth rate by comparing the growth quantity and ratio via lateral area measurement. This experimental was performed against 40 patients total, of which Class I of 14, Class II of 9 and Class III of 17 consist. Wide open lateral cephalograms of 40 patients were taken over average period of 4 Year 3 Months, then the linear and angular measurements were caned out with 11 itemized lists. Autocad R14 application program was utilized to draw their appearance, measure and compare their lateral area. As a result of study, conclusions were made as follows; 1.Mandibular body length (gonion-mentors) tended to increase in order of CIII, CI and CII, and Mandibular body length of CIII group had a tendency to grow twice faster than that of CII group. 2.In lateral items such as Go-Me, A-Cd, B-Cp, E-F and G-H, CIII showed a significant increase on the year-average quantity and rate of the growth, and especially apparent difference was observed in CIII group rather than CII group. 3.For the 4 Year 3 Months period, the year-average growth quantity of lateral area of the mandible was 1.0 cm2 for Class I, 0.8 cm2 for Class II and 1.4 cm2 for Class III, which corresponds to 11.9%, 11.8% and 20.3% of growth ratio respectively. Thus, growth ratio almost 2 times more than other groups was observed in group CIII while growth ratio between group CI and CII has little difference. 4.Considering the results as above, it can be proposed that the difference in size of the mandible between groups is caused by the difference in the growth rate and growth quantity of the mandible, which generated in the middle of growth, rather than the difference in size of congenital Jaw-bone.

거골에 발생한 거대세포종 : 증례 보고 Report of 1 Case

문명상,이규성,변상태 최신의학사 1986 最新醫學 Vol.29 No.6