종 분포 모형을 이용한 구상나무림의 지속 및 쇠퇴에 관한 연구 - 전라남도 광양시 백운산을 중심으로 -

조선희 ( Seon Hee Cho ),박종영 ( Jong Young Park ),박정호 ( Jeong Ho Park ),이양근 ( Yang Geun Lee ),문이만 ( Lee Man Mun ),강상호 ( Sang Ho Kang ),김광현 ( Gwang Hyun Kim ),윤종국 ( Jong Guk Yun ) 한국산림과학회 2015 한국산림과학회지 Vol.104 No.3

The present study investigated the habitats of Korean fir trees (Abies koreana E. H. Wilson) on Mt. Baekwun (Baekwun-san), determined the current distribution, quantified the contribution of biological and nonbiological environmental factors affecting the distribution, derived actual and potential habitats, presented a plan for the establishment of protected areas, applied RCP 8.5 climate change scenario to analyze the effects of climate change on the future distribution of Korean fir trees, and predicted future potential habitats. According to the results of the study, 3,325 Korean fir trees (DBH >= 2.5 cm) inhabited Mt. Baekwun, and their distribution area was approximately 150 ha. Populations of Korean fir trees were confirmed to exist at an altitude of 900 m above sea level and were distributed up to 1,200 m. Based on potential distribution, areas appropriate for habitation by Korean fir trees were analyzed to be 450 ha, three times the current distribution area, with a focus on Sang Peak (Sang-bong), Eokbul Peak (Eokbul-bong), Ddari Peak (Ddari-bong), and Dosol Peak (Dosol-bong). The forest stands near Sang Peak, the main peak, were evaluated as those with the most appropriate potential for the habitation of Korean fir trees, and populations of the trees tended to prefer the northern slope rather than the southern slope. When climate change scenario RCP 8.5 was applied and future potential distribution was analyzed, the habitats were expected to decrease in area to 20 ha by 2050, with a focus on Sang Peak, and areas appropriate for habitation were predicted not to exist by 2080. Judging from such results, as global warming accelerates, the habitats of Korean fir trees are clearly expected to move from lowlands to highlands.

孔子의 敎育思想

趙相衍 淸州敎育大學校 1973 論文集 Vol.9 No.1

작업장 누적소음 노출과 혈압과의 관련성

이상윤, 김재용*, 임형준, 윤기정, 최홍렬*, 고상백**, 강대희, 조수헌 대한산업의학회 2001 대한직업환경의학회지 Vol.13 No.2

목적 : 작업장에서의 누적소음노출값과 혈압의 변화 사이의 관계를 관찰하기 위한 단면 연구를 시행하였다. 방법 : 소음발생 제조업체의 남성근로자 중 건강진단 자료, 설문지 자료, 인사기록이 모두 갖추어진 852명을 연구대상으로 하였다. 작업장 소음측정값은 34개 지점에서 측정된 작업환경 측정 보고서 값을 사용하였고, 혈압은 건강진단시 측정한 수축기 혈압과 이완기 혈압 각각의 평균을 이용하였다. 가능한 교란변수들을 건강진단시 설문조사를 통하여 조사하였다. 근로자의 근무기간과 근무했던 작업부서의 소음노출값을 이용하여 누적소음노출값을 추정하였고, 이에 따라 전체 연구대상 근로자를 저소음노출군, 중등도소음노출군, 고소음노출군, 과다소음노출군으로 구분하였다. 누적소음노출값으로 구분한 소음노출군 사이에 평균 수축기 혈압 및 이완기 혈압의 차이가 있는 지를 나이, 비만도지수, 혈중 콜레스테롤값, 고혈압의 가족력, 흡연력, 음주력 등의 가능한 교란변수들의 영향을 통제한 상태에서 비교하였다. 결과 : 가능한 교란변수들을 보정한 상태에서 저소음노출군에서 과다소음노출군으로 갈수록 수축기 혈압 및 이완기 혈압의 증가가 있는지를 관찰하기 위해 일반선형모델을 이용하여 분석하였을 때, 수축기 혈압 및 이완기 혈압 모두 소음노출군이 혈압 변화의 유의한 설명변수였고, 수축기 혈압 및 이완기 혈압 모두 저소음노출군에 비해 과다소음노출군이 각각 2.1 mmHg, 2.7 mmHg 만큼 높았다. 결론 : 이는 만성적으로 누적된 고소음에의 노출로 인하여 혈압 상승의 가능성이 있음을 시사한다. Objectives : The association of workplace cumulative noise exposure and blood pressure was investigated in this study using cross-sectional design. Methods : The study population comprised 852 manufacturing male workers of whom occupational health examination data, questionnaire and personnel records were available. Workplace ambient noise monitoring data was used for calculating individual cumulative noise exposure level. Mean of each systolic and diastolic blood pressure of occupational health examination data was used for individual systolic and diastolic blood pressure level. Possible confounding variables including family history of hypertension, smoking habit, alcohol drinking habit were collected by questionnaire. On the basis of job location and duration of work at the location, a cumulatlve time-weighted average noise level was calculated for each workers. According to this cumulative noise exposure level, each study subject was categorized as low noise exposure group, moderate noise exposure group, high noise exposure group, very high noise exposure group. Among noise exposure groups, mean of systolic and diastolic blood pressure was compared after adjusting possible confounding variables such as age, body mass index, serum cholesterol level, family history of hypertension, smoking history, alcohol drinking habit. Results : After adjusting possible confounding variables, noise exposure group was signnificant explanatory variables for both systolic and diastolic blood pressure, and mean of both systolic and diastolic blood pressure of very high exposure group was higher than that of low exposure group. Conclusions : These findings suggested that the high cumulative noise exposure might elevate the blood pressure.

원인 미상의 설사와 복통으로 발현한 AL형 유전분증 1 예

조종태,윤성철 단국대학교 1998 論文集 Vol.32 No.-

Primary systemic amyloidosis (AL amyloidosis) is an uncommon disease characterized by the accumulation in vital organs of a fibrillar protein consisting of monoclonal immunoglobulin light chains. It is a plasma cell dyscrasia usually accompanied by a bone marrow plasmacytosis and an M component in the serum or urine. The presenting features of AL amyloidosis are protean and frequently nonspecific, but the diagnosis is rarely made until symptoms or signs referable to a particular organ appear. The amyloid deposits cause cardiac or renal dysfunction and, ultimately, death. We report a case of AL amyloidosis, presented with unexplained diarrhea and abdominal pain for eight months, documented by a renal biopsy, and review the previous literatures

모잘록병균(Pythium ultimum)에 대한 N-Phenylbenzenesulfonamide 유도체의 살균활성에 미치는 구조적 특성

조윤기,장기운,성낙도 충남대학교 농업과학연구소 2008 농업과학연구 Vol.35 No.1

The structural characteristics that influence on the fungicidal activities of N-phenylbenzenesulfonamide (1∼24) and N-phenyltheinylsulfonamide (25∼30) derivatives against Dampping-off (Pythium ultimum) were discussed quantitatively using the models of molecular holographic quantitative structure-activity relationships (HQSAR). From the based on these findings, the statistical results of the optimized HQSAR F-3 model showed better predictablity (r² cv. or q²=0.581) and correlation coefficient (r²_(ncv).=0.963). And, from the analytical results of the atomic contribution maps on the fungicidal activities, the most active compound is R₁= 2-fluoro-4-chloro substituent (4) and the most inactive one is R₁=4-methoxy substituent (20). It was found that the 2-fluoro-4-chlorophenyl group as a R₁-group was an important structure and a characteristic factor not only for herbicidal activity but also for fungicidal activity.

엔로플록사신 액제의 닭유래 병원세균에 대한 시험관내 항균효과 시험

윤효인,박병권,조준형,정상희,박경환,장범수,김종춘,황윤환,임종환,이내경,박승춘 충남대학교 수의과대학 동물의과학연구소 2000 動物醫科學硏究誌 Vol.8 No.-

In this study the antimicrobial spectrum and sensitivity of a liquid formulation of enrofloxacin against the major six pathogenic bacteria isolated from the diseased poultry in Korea were evaluated in comparison with ciprfloxacin (CFX), gentamicin (GM) and penicillin (PC). A liquid form of enrofloxacin, a test material and ciprofloxacin showed at least 83% antibacterial activity against all of six test pathogenic microorganisms at the fixed concentration of 10 ㎍/㎖. Gentamicin and penicillin revealed much lower antibacterial activity at the same condition. We evaluated the liquid form of enrofloxacin as having widespread antibacterial spectrum against poultry infections. The liquid form of enrofloxacin showed potent antibacterial activity, with the MIC range being 0.12∼2 ㎍/㎖ against Gram positives, 0.06∼2 ㎍/㎖ against Gram negatives and 0.5∼2 ㎍/㎖ against Mycoplasma spp. These values were equivalent to or somewhat higher than those of ciprofloxacin, but much lower than those of gentamicn and penicillin. This new liquid form of enrofloxacin would find its way in application of mixing with drinking water for the prevention and treatment of diverse infections in chickens.

표면곡률을 이용한 물체의 형상특징추출

조동욱,김지영,박웅규,윤상균,이성석,김태우 西原大學校 1992 西原大學 論文集 Vol.29 No.-

In this paper, a new shape feature extraction method of the objects using surface curvatures is described. First, the values of the H & K are calculated from range data as given input. Then objects are assigned in the form of 8 primitives by the signs of the H & K values. But existing methods have the difficulties with the complex object. Therefore, We propose the method for the complex primitives such as cone ridge and cone valley. Finally, the effectiveness of this paper is demonstrated by several experiment.

돼지에서 정맥, 근육 그리고 경구 투여시의 enrofloxacin의 약물동태학

윤효인,김무열,박승춘,조준형,박병권,이내경,노상석,장범수,신광순,조명행 충남대학교 수의과대학 동물의과학연구소 1996 動物醫科學硏究誌 Vol.4 No.-

In order to characterize pharmacokinetic profiles according to route of a new enrofloxacin salt form (Enrotil®), it was given to 4 healthy pigs via oral (p.o.), intramuscular (i.m.) or intravenous (i.v.) administrations at a dose rate of 5 ㎎/㎏ body weight. Enrofloxacin (ENFX) in serum was detected by bioassay using E. coli BE1186 as a test organism. The biological elimination half-lives (t_1/2(β)) of ENFX were 6.76±0.99 h (i.v.), 7.16±2.30 h (i.m.) and 11.45±3.90 h (p.o.), Volume of distribution (Vd) of enrofloxacin was 2.20±0.31 L/㎏ (i.v.), 2.52±0.60 L/㎏ (i.m.) and 1.88±0.33 L/㎏ (i.m.). Mean residence time (MRT) was 8.77±1.26 h after i.v. injection and the maximal concentration time (Tmax) following p.o. and i.m. administration was 0.76±0.09 h and 0.60±0.12 h, indicating a rapid absorption from these routes. Bioavailibility (F) was calculated as 64.1% for p.o. administration and 59.71% for i.m. injections. In summary, the newly formulated enrofloxacin salt form has shown a high water solubility, rapid absorption and large tissue distribution, suggesting a potential antibacterials for oral application on a large scale in veterinary sectors.

新羅 長板 打捺紋樣 평기와의 慶州 製作與否에 대하여

조성윤 이화사학연구소 2003 梨花史學硏究 Vol.0 No.30

In thesis, I would know which roof tiles with large-sized paddle-beat pattern of Silla period were produced in Gyeongju area. Up until today, On the basis of the excavated roof tiles in Gyeongju area, Those were not produced. And yet, Roof tiles with large-sized paddle-beat pattern of Goguryo period(高句麗時代) Sites and Backje(百濟時代) were excavated : Horogoru Castle(瓠蘆古壘), the Mireucksa Temple(彌勒寺). Also, Roof tiles with large-sized paddle-beat pattern of Unified Silla period(統一新羅時代) were manufactured in the province : Busosan Castle(扶蘇山城), Huengduck Temple(興德寺), while Roof tiles with large-sized paddle-beat pattern were not likely to produce those in the capital unifid Silla of Gyeongju area. The reason why roof tiles with large-sized paddle-beat pattern of Silla period was not produced in Gyeongju area seem to be caused manufacturing technique. And The reason why roof tiles with large-sized paddle-beat pattern of Unified Silla period was not produced in Gyeongju area could be call in the three questions. - Why is it that, while roof tiles manufacturing technic in Backje period has development workman of Silla was not to take in Backje of manufacturing technique? And, Why ever did roof tiles with medium-sized paddle-beat pattern of new manufacturing technic produce. - Roof tiles with large-sized paddle-beat pattern of Unified Silla period were not produced in Gyeongju area whether that is caused by manufacturing technique which is inferior to the roof tiles of manufacturing technique in the province. - We must make clear whoever is man who manufacture roof tiles with large-sized paddle-beat pattern, whether those are related to spread out zen Buddhim(禪宗). Henceforth a few korean archaeologists have to very interest roof tiles with large-sized paddle-beat pattern of Silla period in the Sites of the bulidings in Gyeongju area. And I expect to have been report roof tiles with large-sized paddle-beat pattern of Backje Kingdom in the Sites of the Backie bulidings.

질소-프로판-암모니아 가스분위기에서 침탄질화시 공기첨가량이 침탄질화특성에 미치는 영향

조효석,이준범,노용식,이상윤 동아대학교 공과대학 부설 한국자원개발연구소 1993 硏究報告 Vol.17 No.1

This study has been performed to find out some effects of air and ammonia addition to a given quantity of nitrogen and propane gas mixture on the carbonitriding characteristics of low carbon steel after carbonitriding for one hour and two hours at 870℃. Carbon potential analysis has shown that the carbon potential decreases with increasing air addition at a given amount of ammonia and also with increasing ammonia addition at a given amount of air. Microscopical observation has revealed that the depth of internal oxidation increases with increasing air addition to a given gas atmosphere and the formation of surface abnormal layer considerably occurs in the gas mixture of more than 2.5% ammonia addition. If has been found by hardness measurements that the effective case depth increases with increasing air addition to a given gas mixture, whereas in more or less decreases with ammonia addition.