化折層과 斗務골層에서 産出된 코노돈트 化石의 鑛物化學

서광수,최석원 공주대학교 기초과학연구소 1992 論文集 Vol.30 No.1

This study is to analyse the mineral chemistry of conodont from the Hwajeol(upper Cambrian) and the Dumugol(lower Ordovician) Formation in the Baegunsan Syncline Zone, Kangweon- Do, Korea. The statisical analysises for chemical composition of conodonts carried out to define the compositional variation within the biostratigraphic conodont zones. The chemical analysises indicate that the conodonts from the Hwajeol and the Dumugol Formations are fluorapatite. These are identical with chemical composition of the inorganic apatite, range from 2.5 to 3.5 wt% in fluorine contents. The discriminant analyses indicated that the Na and Cl contents differ distinctly by the Hwajeol conodont and the Dumugol conodont. Cl(atomic percentage) and Na(atomic percentages) values of the Dumugol condont are higher than these of the Hwajeol conodont. Ca(atomic percentage) contents of the Dumugol conodont are lower than those of the Hwajeol conodont. In the long run, Ca increases with ascending stratigraphic sequence, while Na and Cl decrease with ascending from the Hwajeol Formation to the Dumugol Formation.

반복적인 실신 및 실신전환자의 기립경사 검사시 뇌혈류 변화

조수진,김준수,이광호,정진상,송희정,이상철,서정돈,이원로 대한신경과학회 1999 대한신경과학회지 Vol.17 No.3

강원도 삼척시 일대에 분포하는 하부 고생대층의 Conodont

서광수 公州大學校 基礎科學硏究所 1999 自然科學硏究 Vol.8 No.-

본 연구의 목적은 강원도 삼척시 서부 지역에 분포하는 하부 고생대층의 코노돈트 연구를 통하여 이들의 지질시대를 규명하고, 색변화지수를 이용하여 이들 지층의 변질온도를 밝히는데 있다. 코노돈트 미화석 연구를 위하여 삼척군 내미노리 지역과 무사리 지역에서 22개의 시료를 채취하였으며, 이 중 10개의 시료에서 총 64개체가 산출되었다. 이들 화석은 13속 16종로 분류하였으며, 각 층에서 산출된 대표적인 종은 다음과 같다. Teridontodus sp. Rossodus manitouensis, Oneotodus sp, Acanthodus sp, Teridontodus nakamurai, Serratognathus bilobatus, Scolopodus kelpi, Rhipidognathus lawuensis, Aurilobodus leptosomatus, Tangshanodus tanshanensis등이다. 산출된 두무골층의 코노돈트와 북미 지역의 코노돈트를 대비한 결과 두무골층의 지질시대는 북미지역의 코노돈트 C대 상부에서 D대 중부까지며, 이는 유럽의 Tremadocian의 상부에 해당한다. 막골층의 코노돈트는 북 중국의 Liangchiashan층과 하부 Machiagou층의 코노돈트 화석군과, 북미지역의 Fauna 1에서 Fauna 3에 각각 대비된다. 이는 Arenigian 하부에서 Llanvirnian 최 하부에 해당한다. 또한 산출된 코노돈트 미화석의 색깔은 암흑색에서 투명백색으로 색변화지수는 5~8에 해당하며, 변질온도는 약 300℃ 이상으로 추정된다. This study is to clarify the geologic time and temperature of the metamorphism of the Lower Paleozoic Sequence using conodont fauna from the Samcheock Area. A total of 64 identifiable conodonts were recovered from 22 samples collected from 2 columnar sections in the Samcheck Area. Kaneweondo. They are classified into 16 species referable to 13 genera. The representative species of these are Teridontodus sp. Rossodus manitouensis, Oneotodus sp, Acanthodus sp, Teridontodus nakamurai, Serratognathus bilobatus, Scolopodus kelpi, Rhipidognathus lawuensis, Aurilobodus leptosomatus, tangshanodus tanshanensis. Conodont fauna of the Dumugol Formation is correlated with those of from the Fauna C to Fauna D of North America. This is from late Tremadocian to early Arenigian in age. Conodont fauna of the Maggol Formation is correlated with those of from the Fauna 1 to Fauna 3 of North America, those of Liangchiashan Formation too lower Machiagou Formation of North China. This is from late Arenigian to Llanvirnian in age. Conodont is dark grey to white in color. 5-6 of CAI value, it indicates over 300 ℃ inmetamorphic temperature.

단양지역에 분포하는 하부 고생대층의 열 변질온도

서광수 공주대학교 기초과학연구소 2000 自然科學硏究 Vol.9 No.-

Epstein et al. discovered the variation of conodont colour from pale yellow to brown, black, opaque white, and crystal clear owing to increase of the temperature and pressure. They produced experimental data to show that colour alteration in conodonts is time and temperature dependent. Rejabian et al produced a numerical conodont alteration index schem(CAI 1-8: CaI 6 ;350-500℃, CAI 7; 480-610℃, CAI 8;>600℃) corresponding to changes in colour from pale yellow(1) through light to dark brown to black(5) and from black to grey, through white to clear(8). They also draw isopleths delineating areas of similar thermal alteration. CAI(Conodont Alteration Index) was used to produce time-based isograde maps, which can then be used to assess thermal indices in regionally metamorphosed, contact-metamorphosed, hydrothermally altered rocks. The purpose of this study is to produce a thermal maturation map of the lower Paleozoic sequences in the Danyans and Yongweol-Samcheok areas on the basis of CAI(Conodont Colour Index), interpret a geothermal distribution in the study areas. 8,889 individual conodonts were taken from 358 samples of 25 sections in Danyans, Yongweol and Sameock areas. Color Alteration Index(CAI) of conodonts from the Dumugol Formation of the Baegunsan Syncline zone was 4-5.5 It indicates that a thermal maturation of the Dumugol Formation was about 190-365℃. Color Alteration Index(CAI) of conodonts from the lower Paleozoic sequences of the Danyans areas was 5-7. It indicates that a thermal maturation of the lower Paleozoic seqences was about 330-550℃. Thermal maturation temperature of the lower Palezoic sequences in the Danyans area is the higher than that of the Dumugol Formation of the Baegunsan Syncline zone, about 185℃.

충청북도 단양군 일대에 분포하는 두무골층과 막골층의 코노돈트화석군

서광수 公州大學校 基礎科學硏究所 1996 自然科學硏究 Vol.5 No.-

충북 단양군 일대에 분포하는 두무골층과 막골충의 코노돈트화석을 연구하기 위해서 천동계곡, 최가동, 이륵이, 광파이, 도전리등 5개의 층서단면을 설정하였다. 이들 단면으로 부터 84개의 암석표품을 채취하여 785개체의 코노돈트화석을 선별하였다. 이들 화석군은 61속 48종으로 분류되었다. 두무골층의 코노돈트 화석군은 북미지역의 Tremadocian에서 early Arenigian에 해당한다. 막골층은 암석의 특짐에 의해서 막골층, 직운산셰일층 그리고 두위봉석회암층으로 세분하였다. 이들 지층으로 부터 산출된 코노돈트화석군은 북미지역의 Fauna 3, 북유럽지역의 Llanvirnian에서 Caradocian중 대비되는 것으로 오오도비스기에 해당한다. Samples from the Dumugol and Maggol Formations were collected from the five measured sections in the Danyang Area, Chungchungbuk-do, Korea. A total of 785 identiable conodonts were recovered from 84 samples. They are classified into 48 form species referable to 61. Conodont fauna from the Dumugol Formation are correlated with those from the early Ordovician conodont fauna of North America, northern Europe. The Dumugol Formation ranges from late Trmadocian to early Arenigian of Europe, and in age. The Maggol Formation was dividied into three formations according to characteristic of rocks, the Maggol Formation, Jiggunsan Shale Formation, Duwibong Formation. Conodont fauna from the Maggol Formation are correlated with those from the early Ordovician to middle Ordovician conodont fauna of North America, northern Europe. The Maggol Formation ranges from Llanvironian to Caradocian of Europe. Fauna 3 in age.

충남 공주시 탄천면 안영리 유적지의 화분분석 연구

서광수,이명석 공주대학교 문화재보존과학연구소 2003 문화재과학기술 Vol.2 No.1

충청남도 공주시 탄천면 안영리 산디골의 유적지 발굴 현장에서 15개의 시료를 채취해 화분 분석을 실시하였다. 대부분의 시료에서 포자화분의 산출이 불량한 가운데, 두 개의 시료(시료 3011, 3012)에서 100개 이상의 포자화분이 관찰되어 정량분석을 실시하였다. 포자화분 식물군은 소나무속을 제외한 수목화분이 거의 산출되지 않은 가운데, 벼과를 비롯한 초본화분의 우세가 특징이다. 또한 미식물군의 산출이 빈약한 시료에서도 담수성 조류가 소수 산출되었고, 한 시료에서는 숯의 흔적이 관찰되었다. 이들을 종합할 때 유적지 부근에서 산출된 포자화분군은 하천이나 연못의 영향을 받는 퇴적환경에서 인간의 경작 활동으로 형성된 식생의 결과일 것으로 생각된다. Fifteen samples for analysis of spores are collected from the archeological site in Anyoungri of Kongju. Korea. Spore pollen are rare in most of samples, but are yielded a hundred or more at two samples(sample No. 3011, 3012). They mainly consisted in the spores and pollens of Pinaceae of trees and herbaceous plant. A small number of algae and diatom of fresh water are collected from a sample, also charcoal from another sample. Summing up, paleo-environment of the acheological site is estimated at farming activities influenced by the river or pond based on spore pollen.

양극성 장애의 우세삽화와 임상양상 간의 연관성 : 예비연구

서호준,우영섭,채정호,전태연,김광수,박원명 大韓神經精神醫學會 2007 신경정신의학 Vol.46 No.5

Objective : This study was performed to fmd clinical implications ofdistinctive pattems in bipolar patients with predominance of depressive episodes or manic episodes and to find possibilities to predict predominant episodes in bipolar disorder. Methods : The recmitment period was between 2002 and 2004, among inpatients who had received psychiatric treatment for bipolar disorder. The data about the number and the polarity of the past episodes were collected through medical records, and Sub-jects were divided into depressive or manic episode predominant groups. The two groups were compared regarding Sociodemo-graphic and clinical variables. Results : 74 patients met the inclusion criteria during the study period. 21 subjects were classified as depressive episode Pre-dominant group (depressive episode group), and 53 subjects as manic episode predominant group (manic episode group). There were no differences in sociodemographic data, the number of total episodes and hypomanic episodes, and onset age. However, 90.5% (n=19) subjects of depressive episode group showed depressive episode as first episode, and 88.7% (n=47) of manicepisode group experienced manic episode as first episode (χ²=42.13, df=1, P<0.00l). Psychotic symptomswere significantly more prominent in the manic episode group (χ²=6.85, df=1, P=0.009), and the number ofsubjects who had suicide attempt experience was higher in the depressive episode group (χ²=7.39, df=1, P=0.007). In the comparison of highest GAF scores during the past year, significant difference was found between the two group (p=0.046), as the mean scores of depressive epi-sode group was 68.337±7.47 and manic episode groupwas 71.51±5.42. Conclusion : The results ofthis study show that there are differences in clinical features according to predominant episodes in bipolar disorder. The type of onset episode appears to be related to predominant episode in this study, and it would be a valid Pa-rameter with therapeutic implication in bipolar patients.

아케이드형 재래시장의 동계 실내환경 실태조사 연구

서혜수,김광호,김태연,노지웅,김병선 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.1

The arcades have been introduced for improving the environment of conventional markets, but thermal discomfort, poor IAQ and fire safety problems were occurred in same arcades because designers do not have proper design guideline for the arcades. The purpose of this study was to compare with two arcades on indoor environment and find design elements that cause for built environment problems. To find the design elements which influence on the environment of the arcade, the field measurements in the arcades were conducted, including temperature, humidity, air velocity, CO/CO2, etc. The indoor environment of the arcade was greatly influenced by the volume of arcade and the ventilation opening.

유동전동기의 센서리스 속도제어

서영수,차광훈 명지대학교 대학원 1997 대학원논문집 Vol.1 No.-

Speed sensors are required for the vector control of induction motor. However, this sensor reduce the sturdiness the system and make many problems in operation. A sensorless controller of induction motor has several advantage: availability in a harsh environment. Therefore, a drive system without speed sensor is required. In this paper, to overcome these problems caused by the speed sensor speed estimator is using. The flux information is driving from the currents and voltage. And the speed information is driving from the currents and the estimated stator flux.

충청북도 단양군 일대의 하부고생대층 코노돈트화석

서광수,강계숙 公州大學校 基礎科學硏究所 1995 自然科學硏究 Vol.4 No.-

이 논문은 충청북도 단양군 어의곡리 지역에 분포하는 하부 고생대층에서 산출된 코노돈트미화석을 채취하여 분류, 기재하고 분류된 코노돈트화석군을 이용하여 연구 대상지역의 하부고생대층의 지질시대를 규명하고는데 그 목적이 있다. 이 연구를 위해 어의곡리 단면을 선정하여 이 단면에서 총 23개의 표품을 채취한 결과 총27개체의 코노돈트화석이 산출되었고, 이는 총3속 3종으로 분류되었다. 연구대상 지층인 어의곡리 단면에서는 Cordylodus proavus, Cambrooistodus cambricus, Glyptoconus bassleri. Proconodontus sp.가 산출되었다. 이와 같은 코노돈트화석군을 기초로하여 북미, 유럽, 북중국,호주 등의 화석군과 대비해보면 어의곡리 단면의 지질시대는 상부 캄브리아기에서 하부 오오도비스기에 이르는 것으로 밝혀졌다. Samples from the lower Paleozoic Sequence were collected from the one measured section in the Danyang Area, Chungchungbuk-do, Korea. A total of 27 identiable conodonts were recovered from 23 samples They are clssified into 3 form species referable to 3 genera. Conodonts found in this section are Cordylodus proavus, Cambrooistodus cambricus, Glyptoconus bassleri. Proconodontus sp. Conodont fauna from the Aekogri section are correlated with those from the upper Cambrian to early Ordovician conodont fauna of North America, northern Europe, China.