Elevational Distribution of Breeding Bird Communities in Seoraksan National Park, Korea

( Hyun-su Hwang ),( Jae-kang Lee ),( Tae-kyung Eom ),( Ho-kyoung Bae ),( Dong-ho Lee ),( Jong-hwan Lim ),( Sung-cheol Jung ),( Chan-ryul Park ),( Shin-jae Rhim ) 한국산림과학회(구 한국임학회) 2020 한국산림과학회지 Vol.109 No.1

In this study, the elevational distribution of breeding birds in Seoraksan National Park, Korea was investigated. Forty-six species of birds were documented from line transect surveys taken from Seorakdong at 230 m above sea level (a.s.l.) to the Daechungbong summit at 1708 m asl. Birdspecies richness and diversity were highest in Seorakdong and lowest at the Daechungbong summit. As elevation increased, bird species richness and diversity decreased, with a humped-shape trend being observed between 700 m and 1200 m a.s.l. Stepwise analyses revealed that breeding bird species diversity indices were significantly negatively correlated with elevation (r² = 0.327, P < 0.001) and positively correlated with vegetational coverage (r² = 0.324, P = 0.046). Higher elevations supported fewer birds than low and intermediate elevations. Projections at the local scale, including data on behavior and habitat use by birds, will be necessary for optimal conservation and management of the bird communities in Seoraksan National Park.

Elevational Distribution of Breeding Bird Communities in Seoraksan National Park, Korea

Hwang, Hyun-Su,Lee, Jae-Kang,Eom, Tae-Kyung,Bae, Ho-Kyoung,Lee, Dong-Ho,Lim, Jong-Hwan,Jung, Sung-Cheol,Park, Chan-Ryul,Rhim, Shin-Jae Korean Society of Forest Science 2020 한국산림과학회지 Vol.109 No.1

In this study, the elevational distribution of breeding birds in Seoraksan National Park, Korea was investigated. Forty-six species of birds were documented from line transect surveys taken from Seorakdong at 230 m above sea level (a.s.l.) to the Daechungbong summit at 1708 m asl. Birdspecies richness and diversity were highest in Seorakdong and lowest at the Daechungbong summit. As elevation increased, bird species richness and diversity decreased, with a humped-shape trend being observed between 700 m and 1200 m a.s.l. Stepwise analyses revealed that breeding bird species diversity indices were significantly negatively correlated with elevation (r² = 0.327, P < 0.001) and positively correlated with vegetational coverage (r² = 0.324, P = 0.046). Higher elevations supported fewer birds than low and intermediate elevations. Projections at the local scale, including data on behavior and habitat use by birds, will be necessary for optimal conservation and management of the bird communities in Seoraksan National Park.

디지털 I-PD 제어기에 의한 태양광 발전 시스템의 정출력 제어

박지호,김영빈,신동률,문백영,우정인 東亞大學校 大學院 2000 大學院論文集 Vol.25 No.-

In this paper, constant output control of solar power generation system with instantaneous variable output is proposed. In order to get constant DC and AC voltage source, we construct Buck-Boost chopper equip with the digital I-PD type controller first. Consequently, we are able to get constant DC boltage. Next, we obtain AC source through construction PWM single phase inverter that has the constant frequency output. And we design LC filter to reduce THD(Total Harmonic Distortion). The validity of proposed control strategy is verified from results of simulation.

적외선 영상을 이용한 야간 장애물 검지 기법

박동렬,박세제,박영태 경희대학교 산학협력기술연구원 1999 산학협력기술연구논문집 Vol.5 No.-

A robust scheme of detecting obstacles including vehicles and human beings that may cause serious traffic accidents in the nighttime driving is presented. Road regions are determined by applying the phase-directed edge linking followed by the image labeling to the infrared image. Hot evidences, which provide clear evidence of vehicles, are extracted by thresholding the image with the shoulder of the histogram. Obstacle regions are detected by the evidential reasoning rules that combine the isolated regions obtained by the image labeling and the hot evidence information. Shapes of distant obstacles may not be extracted easily, so that the hot evidences near the road region are determined as possible obstacle regions depending on their location. Experimental results show that the performance is robust to nighttime infrared scenes having various types of obstacles.

PC12세포에서 Reserpine에 의한 Preproenkephalin 유전자 발현의 조절

박석호,임동윤,최철희,김상훈,박상학,김학렬 조선대학교 1994 The Medical Journal of Chosun University Vol.19 No.1

In cultured PCl2 celIs, prepronkephalin gene expression was studied by measuring preproenkephalin mRNA levels as well as enkephalin content after the treatment of reserpine. Reserpine(0.5 uM) elicited and increased enkephalin peptide levels within 6-24 hrs, which was not inhibited by cycloheximide(2ug /ml), a protein synthesis inhibitor. In addition, reserpine-induced increase of enkephalin was not inhinited by dactinomycin(5ug / ml), which was found to decrease preproenkephalin mRNA. When preproenkephalin mRNA was measured by Northern blot hybridization with cDNA probe, reserpine elicited a slightly increased preproenkephalin mRNA in PCl2 cells as well as in the rat adrenal glands. From the present experimental data it is thought that reserpine-induced enhancement of cellular enkephalin content in cultured PCl2 cells may be mediated through the post translational processing along with a slightly increased transcription.

총단관결찰로 인한 血淸蛋白分劃像의 變化

朴東烈,曺準承 慶北大學校 醫科大學 1980 慶北醫大誌 Vol.21 No.1

총단관결찰후에 血淸蛋白分劃像이 어떻게 變動하는가를 보기 위하여 一定한 其間 같은 條件下에서 동육한 쥐를 使用해서 手術前 正常 血淸과 단관결찰 24, 48 및 72時間째의 血淸을 分離하여 cellulose acetate膜을 利用한 電氣泳勳을 實施해 서 그蛋白分劃像을 調査해 보았다. 正常 쥐血淸의 總蛋白濃度는 7.12 g/dl, albumin 3.11 g/dl (43.6%), α_1-globulin 0.15g/dl(2.1%), α_2-globulin 0.79 g/dl(11.1%), β-globulin 1.71g/dl(24.1%), γ-globulin 1.36 g/dl(19.1%)이었으며 이의 A/G 比는 0.77이었다. 쥐 血淸의 蛋白分劃은 사람血淸의 그것과 比較해서 A/G 比와 albumin및 α_1-globulin의 濃度가 낮고 β-globulin의 濃度는 높았다. 총단관을 結紮한 後의 血淸蛋白의 電氣泳動像은 變動을 나타내었다. 卽 단관결찰 72時間뒤에는 γ-globulin이 約半으로 減少되고 β-globulin은 增加 되었으며 其他의 蛋白分劃에는 別다른 變動이 없었다. Change in eletrophoretic patterns of serum protein after ligation of the common bile duct was investigated in albino rats weighing approximately 200g. Sham operated rats were used as control. Rats were sacrificed 24, 48 and 72 hours after the operation. Serum samples of each group were analyzed for determinations of total protein and its eletrophoretic patterns using a cellulose acetate membrane. In comparison with human, normal rat serum showed lower levels of albumin and alpha 1-globulin, lower A/G ratio and higher level of beta-globulin. The ligation of the common bile duct produced an alteration of electrophoretic patterns of serum protein. In 72 hours after the ligation, beta-globulin level increased apparently, but gamma-globulin level decreased to approximately half of the control.

조루증의 치료에서 Paroxetine의 효과와 부작용

박광성,이재규,윤진상,권동득,오봉렬,류수방,박양일 全南大醫大 2001 전남의대학술지 Vol.37 No.1

다양한 파장폭의 가시광선에 의해 중합된 복합레진의 미세경도와 변연누출도

박수만,이재용,한승렬,하상윤,신동훈 大韓齒科保存學會 2002 Restorative Dentistry & Endodontics Vol.27 No.4

Several ways of curing are being tried to improve material's properties and reduce marginal gap. However, all are considering about the pattern of light intensity. It was noted from the preliminary study the change of light wavelength from filter chaning may give an impact on material's property and microleakage. The object of this study was to verify the effect of filters with various wavelength width on the microhardness and microleakage of composite resin; hybrid type of DenFil and submicron hybrid type of Esthet X. Composite resins were cured using 3 kinds of filter; narrow-banded(465-475 nm), mid-banded(430-470 nm), wide-banded(400-500 nm). After the estimation of microhardness, degree of dye penetration and the maximum gap from SEM evaluation were done between 4 groups that showed no difference in microhardness value of the lower surface. The results were as follows: 1. Adequate microhardness could not be gained with a narrow-banded filter irrespective of curing time. At the upper surface. DenFil should be polymerized with middle or wide-banded filter for 20 seconds at least, while Esthet X be cured with middle or wide-banded filter for 30 seconds at least to get similar hardness value to control group. 2. There was little dye penetration in enamel margin, but all dentin margins showed much more dye penetration irrespective of curing conditions. Although there was not statistical difference, groups cured with mid-banded filter for 40 seconds and with wide-width filter for 20 seconds showed relatively less dye penetration. 3. It was revealed from the SEM examination that group cured with wide-banded filter had the smallest gap without statistical significance. Spearman's rho test showed that the correlation between the results of dye penetration and SEM examination was very low. From these results, it could be concluded that curing with wide-width filter would be better than the other techniques. even though the curing technique using mid-width filter seems to have its own unique advantage.

약물 유해반응 보고지침 -임상시험의 안전성에 관한 정보 관리지침 -

지동현,김훈교,배진우,손동렬,김인범,전용관,박혜연 大韓臨床藥理學會 1998 臨床藥理學會誌 Vol.6 No.2

응급실에 내원한 약물중독환자의 지역별 비교분석

임근우,박일영,유승진,나병호,오동렬,전해명,황주일,김세경 대한응급의학회 1995 대한응급의학회지 Vol.6 No.1

We reviewed retrospectively 230 patients who came to emergency room of Kang Nam St. Mary's Hospital and Uijongbu St. Mary's Hospital between 1. January and 31. December 1994. We classified them according to their age, sex, a sort of drug, the cause of poisoning, prehospital care, time-lapse to arrive at hospital after poisoning, psychiatric problem the status of patients. *We conclude as follows; 1. The male to female ratio was totally 1 : 1.98, 1 : 1.24 in a urban area, 1 : 2.43 in a rural area. 2. On age of the patients in this study, the peake incidence was between 20 and 39(55.2%). 3. On seasonal prevalence, the poisoning was most common in summer and spring, in urban area(35.7%) and rural area(37.0%) respectively. 4. The common drug were as follow; Doxylamine, Organophosphate, Acetaminophen in urban area, Paraquat, Organophospate, Doxylamine in rural area 5. The percentage of suicidal attempt were 81.8% and 87.7% in urban area and rural area respectively. 6. The poisoning patients had psychatric problem in 19.4% and 24.6%, in urban area and rural area respectively. 7. Before arrival to emergency room, 27.7% of patient was done prehospital care in rural area. 8. On arrival to emergency room, 95.1% and 73.8% of patients show stable vital sign in urban area and rural area respectively.