울진원자력발전소 주변 소나무림의 종조성과 군락 특성

방제용,전영문,변두원,류병혁,이호준 建國大學校基礎科學硏究所 1995 理學論集 Vol.20 No.-

울진원자력발전소 주변 소나무림의 종조성과 군락특성을 1994년 3월부터 95년 2월까지 조사한 결과는 다음과 같다. 소나무군락은 상수리나무하위군락과 산철쭉하위군락으로 분류되었으며, 전조사방형구 내에서 출현한 종수는 총 116종으로 상수리나무하위군락과 산철쭉하위군락에서 방형구당 출현종수는 각각 28종, 23종으로 나타났다. 소나무군락의 계층별 평균 수고와 식피율은 상수리나무하위군락에서 교목층이 각각 13.5m와 78.8%, 아교목층이 6m와 37.5%, 관목층이 1.9m와 53.6%, 초본층이 0.4m와 64.4%, 산철쭉하위군락에서는 교목층이 13m와 83.8%, 아교목층이 5.5m와 52.5%, 관목층이 1.9m와 57.5%, 초본층이 0.6m와 69.4%로 나타났다. 피복지수에 의한 계층별 우점순위는 교목층과 아교목층에서 각각 소나무가 8437.5, 1111.3으로 나타났고 관목층에서 진달래(2638.5), 초본층에서 큰기름새(1048.2)가 가장 높게 나타났다. 소나무의 DBH별 분포를 보면 11-15cm급이 상수리나무하위군락과 산철쭉하위군락에서 각각 29.1%(4.2 individuals/a), 26.7%(4.5 individual/a)로 가장 높게 나타났다. 현존식생도에 따른 각 식생형의 분포면적은 소나무림이 133.1k㎡(80.5%), 경작지와 주거지 28.7k㎡(16.2%), 곰솔림 1.8k㎡(1.1%) 순으로 나타났다. 녹지자연도의 등급별 분포는 7등급(이차림)이 70.4%, 2등급(경작지와 주거지) 17.4%, 8등급(이차림) 11.6%, 4등급(벌목지) 0.2%, 6등급(인공조림지) 0.1% 순으로 나타났다. Montreal model에 의한 소나무림의 식물현존량은 3,077,327.8ton으로 산정되었다. The floristic composition and community characteristics of Pinus densiflora forest in vicinity of Ulchin Atomic Power Plant were surveyed from March, 1994 through February, 1995. The results obtained are summarized as follows: The Pinus densiflora community was classified into the subcommunity of Quercus acutissima and Rhododendron yedoence var. poukhanense. The total number of species appearing in the entire surveyed quadrats was 116 sepcies, then 28 and 23 species per quadrat in Quercus acutissima subcommunity and Rhododendron yedoence var. poukhanense subcommunity, respectively. Tree height and vegetation cover by the layer of the Pinus densiflora community were 5m and 78.8% in tree layer, in subtree layer(6m, 37.5%), in shrub layer(1.9m, 53.8%) and in herb layer(0.4m, 64.4%) in Quercus acutissima subcommunity, and in tree layer(13m, 83.8%), in subtree layer(5.5m, 52.5%), in shrub layer(1.9m, 57.5%) and in herb layer(0.6m, 69.4%) in Rhododendron yedoence var. poukhanense subcommunity. The dominance sequences on each stratum determined by the coverage index showed that Pinus densiflora was most dominant in tree layer with 8437.5 and in subtree layer with 1111.3, Rhododendron yedoence var. poukhanense in shrub layer with 2638.5, and Spodiopogon sibiricus in herb layer with 1048.2 value. The highest value of diameter breast height(DBH) distritued in the range of 11~15cm in Quercus acutissima subcommunity(29.1%, 4.2 individuals/a) and Rhododendron yedoence var. poukhanense subcommunity(26.7%, 4.5 individuals/a), respectively. The distribution area of each vegetation type in the actual vegetation map was 80.5% in Pinus densiflora forest, 16.2% in cultivated land and residential section, and 1.1% in Pinus thunbergii forest. The distribution of the degree of green naturality(DGN) was 70.4% in the 7th grade(second forest), 17.4% in the 2nd grade(cultivated land and residential section), 11.6% in the 7th grade(second forest), 0.2% in the 4th grade(cutted area), and 0.1% in the 6th grade(afforestation). It was estimated that phytomass of Pinus densiflora in the study sites, which was calculated by Montreal model, was 3,077,327.8ton.

충주 지역에서 10년간 급성심근경색의 임상관찰에 대한 연구

박봉안,류하근,이종혁,김인숙,류주성,유재등,이용구,문언수,김형수 건국대학교 의과학연구소 2001 건국의과학학술지 Vol.11 No.-

Background: The current treatments of acute myocardial infarct(AMI) Include noninvasive method using thrombolytics and invasive methods such as primary percutaneous transluminal coronary angioplasty(PTCA) and coronary artery bypass graft(CABG)surgery. Although there are many studies comparing the effectiveness of noninvasive and invasive methods, when large clinical centers, 20% of totar hospitals, were excluded, most middle-sized hospitals lacked personnels and facilities for the invasive methods. Thus they opted for the noninvasive methods. Therefore, in this study, the clinical characteristics of AMI patients and the results of thrombolytic & conservative treatment were observed. Method: 137 patients with acute myocardial infarct, who visited KonKuk University Medical Center, ChoongJu Hospital during Sept. 1990 to Sept. 1999 were analysed retrospectively using medical records. Result: The sexual compositions of patients were 63.5% male, and 36.5% female. The mean age for male patients were 56±12.9, and for female patients 68.7±9.6 (p<0.05). The mean age for female patients was significantly older than male patients. The patients in the thrombolytic treatment group had mortality rate of 6.25% which is lower than that of the conservative treatment group at 12% (p>0.05). Conclusion: Although in our study, small number of acute myocardial infarct patients caused the statistical insignificance, rapid revascularization by thrombolytic therapy within 6 hours of onset of symptoms improved mortality rate and early ambulation. And we had good results on AMI with thrombolytic agent in ChungJu including near rural area as primary emergency hospital. Therefore a prospective research with greater number of subjects is needed to develop better treatments for AMI.

만성 C형 간염 환자에서 페그인터페론 알파2a와 리바비린 병합 치료중 발생한 벨마비 1예

김일환,장제혁,유충헌,최규남,고정해,김윤정,서광원,김지현,박성재,박은택,이연재,이상혁,설상영 인제대학교 2008 仁濟醫學 Vol.29 No.-

페그인터페론과 리바비린 병합요법은 만성 C형 간염의 일차 치료법이다. 저자들은 만성 C형 간염 환자에서 페그인터페론 과 리바비린 병합 요법 중에 발생한 벨마비 1예를 경험하였기에 문헌고찰과 함께 보고하는 바이다. 환자는 5년 전부터 만성 C형 간염을 앓아온 48세 남자이며, PEG-IFN α-2a 135μgm 피하주사 주1회와 하루 1200㎎의 리바비린을 투여하였다. 치료시작 후 9개월째 환자는 오른쪽 안면의 근력약화를 호소하였으며 벨마비로 진단되었다. 페그인터페론과 리바비린 병합요법을 지속하면서 관찰하였다. 환자의 벨마비는 페그인터페론 치료를 중단하지 않았음에도 3개월후 증상이 회복되고 이후 벨마비 재발 없이 현재 경과관찰 중이다. 만성 C형 간염에서 페그인터페론과 리바비린 병합 요법시 벨마비의 발생 가능성을 염두에 두어야 하겠다. A Case of Bell's Palsy Associated with Combination Therapy of Pegylated Interferon Alfa-2a (PEG-IFN) and Ribavirin for Chronic Hepatitis C Virus Infection Pegylated interferon alfa(PEG-IFN α) and ribavirin therapy is the first line treatment for chronic hepatitis C. Mild complications of the therapy are common, but more serious complications are rare. We report here a case of Bell's palsy that occurred in a patient with chronic hepatitis C virus infection during combination therapy of PEG-IFN α-2a and ribavirin. The patient was 49-year-old man with chronic hepatitis C (genotype 1b) for 8 years. He had compensated liver cirrhosis with splenomegaly. Therapy with PEG-IFN α- 2a 135mcg/week and ribavirin 1200mg/day was initiated. After 9 months of the therapy, the patient showed a loss of muscular tone on the right side of his face. A diagnosis of Bell's palsy was made. The Bell's palsy resolved over 3 months despite continuation of the combination therapy.

IPSec/SSL 프로토콜을 위한 고성능 암호 프로세서 설계

류제혁(Je-Hyuk Ryu),김준형(Jun-Hyung Kim),조군식(Koon-Shik Cho),조준동(Jun-Dong Cho) 한국통신학회 2003 한국통신학회 학술대회논문집 Vol.2003 No.7

다발성 뇌동맥류의 임상적 분석

류성근,이제혁,정신,박종근,김재휴,김수한,강삼석 대한신경외과학회 1996 Journal of Korean neurosurgical society Vol.25 No.6

In this retrospective clinical analysis for 143 patients who underwent operation due to multiple intracrarial aneurysms during the last 12 years(1983-1994), we intended to find out the clinical characteristics, the significant signs for the differentiation between ruptured and unruptured aneurysm, and to compare the results of one-stage operations with those of two-stage operations. The results were as follows : Of 864 patients operated on due to intracranial aneurysms. 143 patients(16.6%) had two or more intracranial aneurysms. Multiple aneurysms were more common in females, with a female to male ratio of 2.4:1 as compared with 1.3 to 1 for patients with single aneurysm. Common locations of the aneurysms were the middle cerebral artery, and posterior communicating artery, anterior communicating artery, and the anterior choroidal artery, in that order, in identifying the site of rupture, the focal hematoma in brain CT scan, segmental vasospasm, irregularity and sizes of aneurysmal sacs on angiograms were helpful. Aneurysms 3mm or less were less prone to rupture. However, for those with a diameter of more than 4mm, the frequency of rupture increased with the size of aneurysm. Eighty eight percent of patients who underwent operations had a favorable outcome and the operation mortality rate was 7.7%. In patients of Grade Ⅰ and Ⅱ, surgical results of the one-stage operation group and two-stage operation group did not differ. In Grade Ⅲ patients, the results were better for the two-stage operation group, without statistical significance. From our studies we have come to the conclusion that incidental aneurysms found in patients with low risk should be treated at the same time when ruptured aneurysms are clipped.

간질로 발증된 천막상부 신경교종의 임상 분석

류춘,정신,김재휴,김수한,강삼석,이제혁 全南大醫大 1993 전남의대학술지 Vol.30 No.1

두부손상 환자에서 Cratine Posphokinase-BB의 평가

류재광,이제혁,김수한,우정현 全南大醫大 1984 전남의대학술지 Vol.21 No.1

외상성 두개강내 동맥류 : 6례보고 Report of Six Cases

류성근,김태선,김재휴,정신,이제혁 대한신경외과학회 1996 Journal of Korean neurosurgical society Vol.25 No.8

Six cases of traumatic intracranial aneurysms are presented. two located on the internal artery. two on the anterior cerebral artery, one on the middle cerebral artery. and one on the middle meningeal artery. Three of the 6 cases were associated with skull fracture. Five cases were treated : two by clipping. two by trapping and one by excision & coagulation of the lesion. Due to increasing use of brain CT to substitute angiogram during the initial surveys of head injury patients. traumatic aneurysms are often overlooked and the diagnosis delayed. Since the clinical course of traumatic aneurysm is variable and its high mortality rate. immediate cerebral angiography & early proper treatment are recommended whenever clinical suspicion of traumatic aneurysm is aroused or/and delayed neurological deterioration is detected after head injury. In this study. the authors tried to find out the clues for early diagnosis of traumatic intracranial aneurysms.

Studies on the Interactions of M₁-, M₂- Receptors with Nicotinic Receptors in Rabbit Sympathetic Ganglia

Ryu, Chun Sik,Kang, Sam Suk,Lee, Je Hyuk,Kim, Jong Keun 대한신경외과학회 1994 Journal of Korean neurosurgical society Vol.23 No.11

교감신경절 전달에 무스카린성 수용체 아형과 니코틴성 수용체가 기능적으로 어떻게 작용하는지를 알아 보기 위하여 척수이단 가토에서 척수를 통한 교감신경절 전섬유의 자극에 의한 승압반응과 신경절 M₁ 수용체 및 니코틴성 수용체 흥분제인 McN-A-343과 DMPP의 승압반응에 대한 M₁ 수용체 길항제인 pirenzepine, M₂ 수용체 길항제인 AF-DX116 및 니코틴성 수용체 길항제인 mecamylamine의 영향을 조사하였다. 먼저 M₁ 및 M₂ 수용체의 작용을 선택적으로 차단하는 pirenzepine과 AF-DX116의 용량을 구하기 위해 chlorisondamine 처리 가토에서의 M₁ 수용체를 통한 작용인 McN-A-343의 혈압상승작용과 M₂ 수용체를 통한 작용인 bethanechol(BCh)에 의한 심박수감소작용을 50% 억제하는 양 (ID_(50))을 각각 구한 결과 pirenzepine의 혈압상승작용에 대한 ID_(50)가 30㎍/㎏였으며 AF-DX116의 심박수 감소작용에 대한 ID_(50)가 27㎍/㎏였다. 제 8 흉추부위에 삽입한 전극을 통해 교감신경절 전섬유를 전기자극하면 혈압상승작용 (24±1.8mmHg)이 나타났으며 이 혈압상승작용은 pirenzepine 3, 10, 30 및 100㎍/㎏에 의해 20~25% 정도 용량에 관계없이 비슷한 정도로 억제되었으나 AF-DX116 100㎍/㎏에 의해서는 영향받지 않았다. Mecamylamine은 용량의존적으로 이 승압작용을 억제하였으며 mecamylamine의 이 억제작용은 pirenzepine 30㎍/㎏에 의해서는 유의하게 강화되었으나 AF-DX116 100㎍/㎏에 의해서는 영향받지 않았다. 척수이단 가토에서 McN-A-343(100㎍/㎏) 및 DMPP(100㎍/㎏)는 혈압상승작용을 나타냈으며 pirenzepine과 AF-DX116은 McN-A-343의 승압작용은 용량의존적으로 억제하였으나 DMPP의 승압작용에는 영향을 미치지 못하였고 mecamylamine은 양약물의 승압작용을 모두 용량의존적으로 억제하였다. 이상의 실험 성적은 척수가토에서 교감신경절 전섬유 자극에 의한 혈압상승에는 M₁ 수용체의 흥분이 일부 관여하나 M₂ 수용체의 흥분은 관여하지 않으며 교감신경절 전달에서 M₁ 수용체의 흥분이 니코틴성 전달을 부분적으로 용이하게 하나 M₂ 수용체는 작용하지 않음을 시사하고 있다. Effects of a M₁ receptor antogonist, pirenzepine, a M₂ receptor antagonist, AF-DX116, and a nicotinic receptor antagonist, mecamylamine on the pressor responses to preganglionic sympathetic nerve stimulation(PNS) and McN-A-343 and DMPP in spinal(pithed) rabbits were investigated in order to elucidate a functional role of M₁, M₂ and nicotinic receptors in ganglionic transmission. Pirenzepine and AF-DX116 selectively inhibited the McN-A-343 induced pressor response in chlorisondamine-treated rabbit and the BCh-induced bradycardia, respectively. Electrical stimulations of preganglionic sympathetic outflow at T8 level produced increases in blood pressure. Pirenzepine(3㎍/㎏) significantly inhibited the PNS-induced pressor response and the degree of inhibition was not changed by increasing the doses to 100㎍/㎏. AF-DX116(100㎍/㎏) had no effect on the PNS-induced pressor response. Mecamylamine inhibited the PNS-induced pressor ressponse in a dose-dependent manner. The inhibitory action of mecamylamine was significantly augmented by combined-treatment with pirenzepine(30㎍/㎏) but AF-DX116(100㎍/㎏) did not affect the inhibitory action of mecamylamine. McN-A-343 and DMPP elicited pressor response in the spinal rabbit. Pirenzepine and AF-DX116 dose-dependently inhibited the McN-A-343-induced pressor response but they did not affect DMPP-induced pressor response. Mecamylamine inhibited both pressor responses induced by McN-A-343 and DMPP. These results suggest that not only nicotinic receptors but also M₁ receptors play a facilitatory role in ganglionic transmission but M₂ receptors do not contribute the tansmission in spinal(pithed) rabbits.

제3뇌실에서 발생한 표피세포종(Epidermoid) 1예 보고 : Case Report

류재광,박중욱,이제혁,우정현 대한신경외과학회 1983 Journal of Korean neurosurgical society Vol.12 No.3

A case of a third ventricular epidermoid is presented, which was diagnosed by conray ventriculography and computerized tomography. The tumor was subtotally removed through a low parieto-occipital approach and ventriculo-peritoneal shunt was performed. The epidermoid of the third ventricle is extremely rare and only a few cases have been reported in the literatures. It's incidence, preoperative diagnosis, surgical technique and complications are briefly reviewed.