낙동강 (洛東江) 하구의 부유 (浮遊) 규조상

이정호,최재신,김용재,정준 ( Jung Ho Lee,Jae Sin Choi,Yong Jae Kim,Jun Chung ) 한국하천호수학회 1995 생태와 환경 Vol.28 No.1

The planktonic diatoms were investigated from six stations in the Naktong River estuary on May 24 in 1994. Total 104 taxa including 3 unidentified taxa were collected and classified into 91 species, 12 varieties and 1 forma belong to 34 genera. Six taxa are new to Korea: Actinocyclus normanii(Grev.) Hust. var. subsalsus(Juhl.-Dennf.) Hust., Cyclotella rossii Ha˚k., Diatoma moniliformis Ku¨tz., Nitzschia capitellata Hust., Thalassiosira weissflogii(Grun.) Fryxell & Hasle, Tropidoneis pusilla(Greg.) Cleve. Aulacoseira ambigua is a dominant species at all stations.

광천 (光川) ( 경상북도 울진군 ) 의 부착규조의 (附着硅藻) 군집구조

이정호,정준 ( Jung Ho Lee,Jun Chung ) 한국하천호수학회 1993 생태와 환경 Vol.26 No.3

To investigate the community of the epilithic diatoms of the less polluted Kwangch`on river, samples were collected from twelve sampling stations on May 19, August 2, October 28 in 1991 and January 5 in 1992. A total 182 diatom taxa were collected. The general change of dominant species along the sampling stations was that Achnanthes japonica and A. convergens were alternately from st.1 to st.3, A. convergens from st. 4 to 7, A. alteragricillima from st.8 to 11 and Nitzschia frustulum at st.12 of the lowest course. The community could be divided in two groups by cluster analysis : the first group from st.1 to 7 was dominated by A. japonica and A. convergens, the second from st.8 to st.12 characterized by dominance of A. alteragricillima. Current speed was the most important factor to influence the change of the community in this study Dead cell content in the diatom samples examined by cell nucleus staining method was rapidly increased as going to the lower course reaching the maximum value of 65.0 % at st. 12 on May 19, 1991.

금호강의 (琴湖江) 오탁도에 (汚濁度) 따른 부착규조의 (附着珪藻) 정점별 변화

이정호,정준 ( Jung Ho Lee,Jun Chung ) 한국하천호수학회 1992 생태와 환경 Vol.25 No.1

The purpose of this study was to investigate the station variation of epilithic diatoms according to pollution degree from the Kumho River on June 22, 1991. Total 95 taxa were identified in this study and dominant species were Achnanthes minutissima at st. 1, Fragilaria construens var. venter at st. 2, 4, 6, Nitzschia amphibia at st. 3, 5 and Nitzschia palea at st. 7,8,9 and 10. Species diversity indexes varied from 1.119 at st.1 to 0.566 at st. 10, and the proportion of nitrogen heterotrophic Nitzschiae in each station was increased as going to lower course of this river. The variation of DAIpo values was range from 64.55 (st. 1) to 5.55 (st. 10) and the value was rapidly decreased from st.7. And also, the variation of DAIpo was nearly the same tendency with BOD and Electric conductivity in this study.

저서성 (底棲性) 규조류 Achnanthes alteragracillima 의 미세형태

이정호(Jung Ho Lee),최재신(Jae Sin Choi),김용재(Yang Jae Kim),정준(Jun Chung) 한국식물학회 1994 Journal of Plant Biology Vol.37 No.4

Morphology of Achnanthes alteragracillima Lange-Bert. was studied with scanning electron microscopy in epilithic samples from the Kwang River (Kwangchun). Kyungsangbuk-Do, Korea. The species was characterized by the external raphe terminal fissure deflecting up to valve margin, the internal raphe proximal endings slightly deflecting to the opposite direction each other and biased hyaline area at the valve pole. It could be distinguished from A. minutissima Ku¨tz., closely related species, in having not straight external raphe terminal fissures, and from A. convergens H.Kob. in having a biased hyaline area at the valve pole and not a convergent striae arrangement at the pole of the raphe valve.

부착규조 (附着硅藻) 군집의 유기오탁 (有機汚濁) 지수 ( DAIpo ) 에 의한 금호강의 수질평가

정준,최재신,이정호 ( Jun Chung,Jae Sin Choi,Jung Ho Lee ) 한국환경생물학회 1993 환경생물 : 환경생물학회지 Vol.11 No.1

The water quality of the Kumho river severely polluted was assessed by Diatom Assemblage Index to organic water pollution (DAIpo) on June and October in 1991, February and April in 1992. Total 129 taxa consisted of 14 saproxenous taxa, 87 indifferent taxa and 28 saprophilous taxa were identified in this study. DAIpo values decreased rapidly as going to lower course of this river especially from st. 7, however, the variation of them was independant of the changes of the sampling seasons. The variation of DAIpo values was nearly the reverse tendency with Electric conductivity. The saprobic levels in each station of the Kumho river were oligosaprobic at st. 1, β-mesosaprobic from st. 2 to st. 6, α-mesosaprobic at st. 7, 8, 9 and polysaprobic at st. 10 in the whole sampling seasons.

부착규조에 (附着硅藻) 의한 양산천의 수질평가

정준,최재신,이정호 ( Jun Chung,Jae Sin Choi,Chung Ho Lee ) 한국환경생물학회 1992 환경생물 : 환경생물학회지 Vol.10 No.1

The epilithic diatoms were collected from 17 stations of the Yangsan-ch`on, a period from December in 1990 to April, August, October in 1991. The assessment of the Yangsan-ch`on was carried out by DAI_po(Diatom Assemblage Index to organic pollution). The DAI_po at each station was calculated by the relative frequency of each diatom taxon, and the water quality chart was made of the plotting by DAI_po. The river pollution index(RPI) was calculated to be 46.74 in December, 52.06 in April, 64.85 in August and 53.30 in October. The total taxa of the epilithic diatoms in this study could be classified as 14 Saprophilous taxa, 86 Indifferent taxa and 21 Saproxenous taxa.

담낭 및 총담관 담석증 환자의 정상인의 담즙성분에 대한 비교분석

성석용(Suk Yong Sung),박용검(Yong Keum Park),지경천(Kyong Choun Chi),이정호(Jung Hyo Lee),장인택(In Taik Chang),김상준(Sang Jhoon Kim),이상준(Sang Jun Lee),정봉철(Bong Chul Chung) 대한외과학회 1995 Annals of Surgical Treatment and Research Vol.49 No.1

정신분열병에 대한 리스페리돈의 효과 및 안정성

이민수,김용구,김영훈,연병길,오병훈,윤도준,윤진상,이철,정희연,강병조,김광수,김동언,김명정,김상훈,김희철,나철,노승호,민경준,박기창,박두병,백기청,백인호,손봉기,손진욱,양병환,양창국,우행원,이정호,이종범,이홍식,임기영,전태연,정영조,정영철,정인과,정인원,지익성,채정호,한상익,한선호,한진희,서광윤 大韓神經精神醫學會 1998 신경정신의학 Vol.37 No.1

연구목적 : 본 시험의 목적은 임상시험 시작전에 연구자들을 대상으로 PANSS Workshop을 통하여 PANSS, ESRS에 대한 국내에서의 표준화 작업을 구축하고 새로운 정신병 치료제인 리스페리돈의 효과와 안정성을 재확인하여 리스페리돈 사용에 대한 적정화를 이루는데 있다. 연구방법 : 1996년 4월부터 1996년 9월까지 국내 39개 대학병원 정신과에 입원중인 혹은 증상이 악화되어 입원하는 정신분열병 환자 377명을 대상으로 다시설 개방 연구를 시행하였다. 1주일간의 약물 배설기간을 가진후, 리스페리돈을 8주간 투여하였고, 기준점, 1주, 2주, 4주, 그리고 8주후에 평가되었다. 용량은 제1일에는 리스페리돈 1mg씩 1일 2회, 제2일에는 2mg씩 1일 2회, 제3∼7일에는 3mg씩 1일 2회 투여하였다. 이후 환자의 임상상태에 따라 임의로 증량할 수 있으며, 최대 일일 16mg을 초과하지 않도록 하였다. 추체외로 증상을 조절하기 위한 투약을 허용하였다. 임상증상 및 부작용의 평가는 PANSS(Positive and Negative Syndrome Scale), CGI(Clinical Global Impression) 그리고 ESRS(Extrapyramidal Symptom Rating Scale)을 사용하였다. 연구결과 : 377명중 343명(91%)이 8주간의 연구를 완결하였다. 치료 종결시점인 8주후 PANSS 총점수가 20% 이상 호전된 경우를 약물 반응군으로 정의할때, 약물반응군은 81.3%였다. 리스페리돈에 반응하는 예측인자로는 발병연령, 이전의 입원 횟수, 유병기간이 관련 있었다. 리스페리돈은 1주후부터 PANSS양성, 음성, 및 일반정신병리 점수상에 유의한 호전을 보여 효과가 빨랐다. CGI의 경우도 기준점에 비해 1주후부터 유의한 감소를 나타내었다. ESRS의 경우, 파킨슨 평가점수는 기준점과 비교해 투여 1주, 2주, 4주후 유의하게 증가되었다가 8주후 기준점과 차이가 없었다. Dystonia 평가점수는 1주후만 유의한 증가를 보였으며, dyskinesia 평가점수는 유의한 차이가 없었다. 혈압, 맥박수의 생명징후 및 일반 혈액학 검사, 생화학적 검사, 심전도 검사에서 유의한 변화는 없었다. 결 론 : 이상의 다시설 개방 임상 연구를 통해 리스페리돈은 정신분열병 환자에서 양성증상뿐만 아니라 음성증상 및 전반적인 증상에도 효과적인 것으로 사료된다. 보다 명확한 평가를 위해서는 다른 항정신병약물과의 이중맹검 연구가 필요할 것으로 생각되며, 또한 장기적 치료에 대한 평가도 함께 이루어져야 하겠다. Objective : The purpose of this study was to investigate the efficacy and safety of risperidone in the treatment of Korean schizophrenic patients. Method : This multicenter open study included 377 schizophrenic patients drawn from 39 university hospitals. After a wash-out period of 1 week, the schizophrenic patients were treated with risperidone for 8 weeks and evaluated at 5 points ; at baseline, and 1, 2, 4 and 8 weeks of treatment. The dose was increased from 2mg/day(1mg twice daily) to 6mg/day(3mg twice daily) during the first week and adjusted to a maximum of 16mg/day over the next 7 weeks according to the patient's clinical response. Medication to control extrapyramidal symptoms was permitted. The psychiatric and neurological status of the patients was assessed by PANSS, CGI, and ESRS scales. Results : 343(91%) of 377 patients completed the 8-week trial period. Clinical improvement, as defined by a 20% or more reduction in total PANSS score at end point, was shown by 81.3% of patients. The predictors of response to risperidone were associated older age, shorter duration of illness, fewer previous hospitalization. Risperidone had rapid onset of action ; a significant decrease of the total PANSS and three PANSS factor(positive, negative, general), and CGI was already noticed at the end of first week. For the ESRS, parkinsonism rating scores were significantly increased until week 4 comparing with baseline. Dystonia rating scores were significantly increased until week 1, and dyskinesia rating scores were not significantly changed during the study. Laboratory parameters including vital sign, EKG, hematological, and biochemical values showed no significant changes during the trial. Conclusions : This study suggests that risperidone is generally safe and effective against both the positive and negative symptoms in our group of patients.

직경 1˝ 자성관에서의 원격장와전류 탐상 실험 빛 결함신호 특성

신영길,이창준,이정호,이윤태,장권규,송성철,송성진,정태언 국립7개대학공동논문집간행위원회 2002 공업기술연구 Vol.2 No.-

In this study, a remote field eddy current testing system is built to inspect 1˝ diameter ferromagnetic tubes and resulting experimental signals are investigated. To decide the operating frequency, the emf of sensor coil is monitored while the sensor coil is moved away from the exciter. At proper frequency, sudden change would occur in the signal pattern. This also indicates the location of remote field region, so that the distance between coils can be decided. The defect signal contains two defect indications, each appears as the sensor and exciter coil passes a defect. Experimental results show that defect depth can be estimated by comparing the two indications. Also, linear relationship between defect depth and phase signal strength is observed.

新손상정도계수에 의한 외상 환자의 분석과 적정진료의 평가

설동환,서강석,박정배,정제명,서준석,이정호,최승필 대한응급의학회 2002 대한응급의학회지 Vol.13 No.2

Purpose: The Injury Severity Score (ISS) has limited predictive power and is difficult to calculate. We used the New Injury Severity Score (NISS) and compared it to the ISS. The purpose of this study was to give a prognosis and predict the mortality for trauma patients by using the ISS and the NISS and to compare Trauma and Injury Severity Score(TRISS) method using NISS with the TRISS method using ISS. Methods: A retrospective study of 100 trauma victims who visited the emergency room of Kyungpook National University Hospital from September 2000 to May 2001 was made using the ISS, the NISS, and the TRISS methods. Results: A comparison between survivors and nonsurvivors showed differences in the revised trauma score (RTS), ISS, NISS, and TRISS Ps-1 by using RTS and the ISS and TRISS Ps-2 by using RTS and NISS (p<0.01). We found that the NISS was more predictive of survival than the ISS. A receiver operating curve analysis and Hosmer Lemeshow statistics showed that both the NISS and the ISS provided a good fit throughout its entire range of prediction. Conclusion: By comparing the ISS with the NISS, we concluded that the NISS better separated survivors from nonsurvivors. The NISS predicted survival better and was easier to calculate than the ISS. The results of the TRISS method using NISS were satisfactory, and we expect to use this method in quality assessment with further study and modification.