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.

CBT를 이용한 안전한 멀티캐스트 그룹 관리

윤성현,장주만,조원환 高麗大學校附設 컴퓨터科學技術硏究所 1999 JOURNAL OF COMPUTER SCIENCE & ENGINEERING TECHNOLO Vol.2 No.-

보다 높은 대역폭에서 안전한 멀티캐스트 통신을 하고자 욕구는 기업, 정부, 그리고 인터넷을 사용하는 모든 단체에서의 고조되고 있고 또한 주요 관심사이다. 멀티캐스트 환경에서 보안성을 제공하기 위해 최근까지 진행되어 오고 있는 연구는 주로 그룹 키 관리 기법에 관한 것들이다. 본 논문에서는 화장성이 우수한 CBT 멀티캐스트 라우팅 프로토콜을 기반으로 안전한 인터넷 멀티캐스트를 위한 CBT기반 그룹 관리 시스템을 제안한다. 본 논문에서 제안하는 기법은 핵심라우터가 키 생성, 키 재구성, 그룹 가입, 탈퇴 등 그룹 관리 뿐 아니라 여러 가지 보안사항을 고려한 기능도 제공해 준다. The need for high bandwidth, very dynamic secure internet multicast communications is increasingly evident in a wide variety of commercial, government, and Internet communities. One of the most recently researches is mainly about the group key management schemes. In this paper, We'll propose a CBT-based group management system with scalable CBT multicast routing protocol. The benefits of this proposed technique are that it offers not only key generation, rekey, group join and leaving but also many functions lated security of multicast group.

情神分裂病 患者의 腦梁과 視床 : 腦 磁氣共鳴映像 硏究 Magnetic Resonance Imaing Study

조성연,강민희,이정섭 대한생물치료정신의학회 2002 생물치료정신의학 Vol.8 No.2

남성 정신분열병 환자에서 대조군에 비하여 뇌량무릎(genu)부위가 유의하게 작았으며 여성 정신분열병 환자군에서는 양군에서 차이가 없었다. 시상의 면적에서는 양군의 차이가 없었다. 이러한 결과는 남성 정신분열병에서 전전두엽의 크기가 작을 가능성을 시사하며, 또한 남성 정신분열병이 여성에 비하여 신경발달학적인 이상이 많을 가능성을 생각할 수 있다. Magnetic resonance imaging study about size of corpus callosum and thalamus of the shizophrenic patient. Many previous studies have been performed. But the result have been inconsistent. We studied with developed semiautomated measurement method. Using DSM-Ⅳ diagnostic criteria of schizphrenia, we selected 20 subjects and 22 controls. We measured area of corpus callosum and thalamus in midsagittal image with NIH image software. Divided 7 areas of corpus callosum as Witelson method and area of thalamus were measured. Significant difference was found in genu area of male corpus callosum, but no significant difference was found in female between schizophrenia and control. Above finding suggests that male schizophrenia may have neurodevelopmental abnormalities and prefrontal abnormalities.

개에서 심장사상충과 유선암종 합병증의 1예

조은상,손화영,류시윤,조성환 忠南大學校 獸醫科大學 動物醫科學硏究所 2005 動物醫科學硏究誌 Vol.13 No.-

A dog which referred to animal hospital with chief compliment of left hindlimb lameness, was died under the examination, so we observed this case histopathologically. Clinical signs were hindlimb lameness, dyspnea, exercise intolerance, lethargy, hemoptysis, anorexia, and coughing. The gross findings were 5cm in diameters nodule in the caudal abdomen, swelling and milky nodules of the lung, swelling and gray-white patches of the liver, ovarian cyst and dirofilariasis in the heart. In histopathologic examination, metastatic tumors and microfilaria were observed in the lung, liver, spleen, adrenal gland and kidney.

개에서 관찰된 모기질세포종의 증례보고

조성환,손화영,김혜성,최종윤,류시윤,박배근,윤원기,홍성혁,김덕환 충남대학교 수의과대학 동물의과학연구소 2002 動物醫科學硏究誌 Vol.10 No.-

Pilomatricoma was histopathologically diagnosed in a 2.5-year-old male Alaskan malamute. The patient was referred to Chungnam National University, Veterinary Medical Teaching Hospital with solitary, firm and well-circumscribed mass at shoulder. Grossly, the mass was dome shaped to tumor like and 10 x 8 x 5㎝ in size. Some lesions had gritty or bony consistency and was chalky when sectioned Histopathologic feature included mumerous clusters of tightly arranged, basaloid cells with evenly distributed chromatin and ghost cells were characterized by a central unstained zone. The ghost cells often become calcified and osseous metaplasia was also present.

배추좀나방(Plutella Xylostella Linnaeus)에 대한 새로운 살충활성 분자의 설계

조윤기,최우영,성낙도 충남대학교 농업과학연구소 2007 농업과학연구 Vol.34 No.2

The new insecticidal active molecules from the based on the holographic quantitative structure-activity relationships (HQSAR) between a series of 1-(R₁)-2-(n-octyl)-3-(R₂), 3-(R₃)-pseudothiourea derivatives and their insecticidal activities against Diamond-back moth (Plutella Xylostella Linnaeus) were designed and discussed quantitatively. The most active molecule from the based graphical analyses of atomic contribution maps with the optimized HQSAR C-1 model (q²=0.764 & r²_(ncv)=0.942) was 1-(n-butyl)-2-(t-butyl)-3,3-diisopropylpseudothiourea (P1: pI_(50)=5.30, IC_(50)=1.397 ppm). Therefore, it is suggested that the new designed molecule would increased the activity as much as 23.5 times as compared to X=n-octyl substituent 17(pI_(50)=4.00, IC_(50)=32.86 ppm) which was the highest active molecule in training set compounds.

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.

흰쥐의 신경병증성 통증에 대한경피신경전기자극과 미세전류신경근자극

이윤주,이충휘,조상현,임중우,남택상 大韓再活醫學會 1999 Annals of Rehabilitation Medicine Vol.23 No.3

골반통증을 동반한 폐쇄신경 기원의 퇴행성 신경초종

이상욱,김두상,조현득,이창호,전윤수,이남규 순천향의학연구소 2007 Journal of Soonchunhyang Medical Science Vol.13 No.1

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Carotenoids 식이와 알코올이 혈액학적 성분과 간조직에 미치는 영향에 관한 연구

조만희,김연선,이상한,우기민,장예진,김창세 순천향의학연구소 1999 Journal of Soonchunhyang Medical Science Vol.5 No.2

Alcohol is well known agent which can damage the human tissues such as liver via stimulating lipid peroxidation and storage, denaturation of macromolecules, and inhibiting protein metabolism. On the other hand, carotenoids in addition to vitamins A, C, E and lipoic acid, play important roles in protecting these oxidative damages as well as preventing the production of free radicals. This study was carried out to elucidate the precise effects of alcohol administration into rats on the antioxidative functions of dietary carotenoids and isolated β-carotene, and to find out any parameters to uncover more detailed biochemical mechanisms of these agents. For these purposes, two different approaches were performed: 1) examination of the changes in hematological parameters (e.g., total proteins, A/G ratio, ALT/AST et. al) and statistical correlations among inter- and intragroups, 2) examination of the histopathological changes by an electron microscope. The results were analyzed and summarized as following; (1) Carrot diet for one week caused a slight increase in albumin. A/G ratio and AST levels, and a slight decrease in ALT, ALP, BUN and uric acid levels. Two-week alcohol administration following carrot diet increased total proteins, albumin A/G ratio and BUN levels. However, both groups were shown to have little significant changes in cholesterol concentrations. (2) Cheese diet for one week caused a significant increase in total proteins, albumin, AST, ALP, uric acid and total cholesterol levels, and a significant decrease in A/G ratio and glucose concentrations. However, two-week β-carotene diet following cheese intake increased total proteins albumin, A/G ratio, BUN and total cholesterol levels, whereas AST, ALT, ALP and uric acid levels were decreased. (3) Alcohol administration for one week caused an increase in AST activities and a decrease in total proteins, albumin, ALT, ALP and BUN levels. A successive β-carotene diet following alcohol administration increased total proteins, albumin, ALT, ALP and BUN levels, whereas decreased AST and uric acid levels. However, there were not significant changes in A/G ratio, glucose and total cholesterol levels in both groups. (4) β-carotene diet for one week caused a slight increase in albumin, glucose, AST and uric acid levels, and a slight decrease in ALP and BUN levels. Two-weeks alcohol administration following β-carotene diet increased albumin, glucose, BUN and total cholesterol levels, whereas decreased AST, ALT, ALP and uric acid levels. (5) Although the pathological investigation on the liver did not reveal significant changes, cheese diet group (CH-BC/1-CH) was shown to have some lipid deposits. Some results were unexpected and different from typical hematological changes shown by other researchers. Nonetheless, these results strongly suggest that the liver damage or hepatism caused by alcohol intake affects many kinds of biochemical metabolisms, which results in significant changes in many hematological parameters. In addition, dietary carotenoid and isolated β-carotene were shown to have protective roles against the biochemical changes by alcohol intake.