濟州道 改良草地에 있어서 띠(Imperata cylindrica)의 季節的 年次的 變化

趙南棋,金翰琳,宋昌吉 제주대학교 1983 논문집 Vol.16 No.-

本 硏究는 濟州道 中山間地帶의 自然草地(Imperata cylindrica/Zoysia japonica type)를 開墾한 後 1 ha當 Dactylis glomerata 17kg, Festuca arundinacea 7kg, Lolium multiflorum 2kg, Trifolium repens 2kg의 導入牧草를 混播(28kg)하여 家畜放牧에 利用되고 있는(1977∼1982年) 改良草地를 對象으로하여, 띠(Imperata cylindrica)植生의 季節的ㆍ年次的變化過程을 調査한 結果를 要約하면 다음과 같다. 1. 每年 季節에 따르는 草長ㆍ收量ㆍ密度ㆍ被度 等 植生의 季節的 變化에 있어서는 秋期에 가장 優勢하였고, 春期에는 低調하게 나타났다. 2. 改良後 年度別 草長의 變化는 1年草地에서 34.26cm이었으나 점차 增加되어 6年草地에서는 49.35cm이었는데, 이 變化狀態의 回歸方程式은 y=-0.13x²+4.41x+28.50이었다. 3. 年數의 經過에 따르는 密度의 變化는 1年草地에서 0.76%였던 것이 年數가 지남에 따라 급격히 增加되어 6年草地에 이르러서는 32.97%로 나타나고 있는데, 이 變化를 y=0.10x²+0.32x-2.30의 回歸方程式으로 表示할 수 있었다. 4. 草地造成 以後 年次別 被度의 變化는 1年草地에서 1.05%, 2年 1.38%, 3年 2.46%, 4年 17.11%, 5年 27.56%, 6年草地에서 36.66%로 每年 增加(y=1.40x²-2.36x+1.39)되었다. 5. 收量의 年次的 變化는 1年草地에서 1.95kg이었으나 年數가 지남에 따라 점차 增加되어 6年草地에서는 1,107.35kg으로 나타났는데, 이 變化狀態를 y=29.11x²+53.52x-154.67로 表示할 수 있었다. This study was conducted to examine the yearly and seasonal changes of Imperata cylindrica on the improved pasture of the mountain districts around Mt. Halla in Cheju Island. For this study, the researcher had investigated for six years from 1977 to 1982 the improved pasture which had been used for grazing from 1977 to 1982. The pasture was reclaimed from native grassland. The mixed seeds of 17kgs' Datylis glomerata, 7kgs' Festuca arundinacea, 2 kgs' Lolium multiflorum and 2kgs' Trifolium repens were sowed per 1 ha. The results of this study are the following : 1. The seasonal changes of Imperata cylindrica : its length, weight, density and coverage are heighest in Autumn, and are lowest in Spring every year. 2. The yearly change in the length of Imperata cylindrica : its length is gradually increased from 34.26 cm in the first year after the reclaimation to 49.35 cm in the 6th year. This change can be represented by the regression equation, Y=-0.13x²+4.41x+28.50. 3. The yearly change in its density : its density is rapidly increased from 0.73% in the first year to 32.97% in the sixth year. The results of this change can be obtained with the regression equation, Y=0.10x²+0.32x-2.30. 4. The yearly change in its coverage : its coverage is increased year by year (1.05% in the 1st year, 1.38% in the 2nd year, 2.46% in the 3rd year, 27.56% in the 5th year, and 36.66% in the 6th year). This change can be calculated with regression equation, Y=1.40x²-2.36x+1.39. 5. The yearly change in its weight : the weight is also increased year after year from 1.95 kg in the first year after reclaimation to 1107.35kg in the sixth year. This change can be calculated with the regression equation of y=29.11x²+53.52x-154.67.

급성 심근허혈에 따른 심실활성시간(Ventricular Activation Time)의 변화

한성욱,김윤년,김기영,남창욱,김기식,김권배 대한순환기학회 2001 Korean Circulation Journal Vol.31 No.3

건축 프로젝트 적정 설계변경 관리를 위한 사례조사

김성욱(Kim Sung-Wook),남혜원(Nam Hye-Won),이종식(Lee Jong-Sik),신창현(Shin Chang-Hyun),전재열(Chun Jae-Youl) 대한건축학회 2009 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.29 No.1(구조계)

Recent design changes in the existing research on the factors and issues of design changes and analysis, responsible for analyzing the relationship, procedural issues, and issues of research that can be active. However, changes in the design of problems are essentially designed to complement the book is for the procedure. Methodology for dealing with design changes in the characteristics of the country and to reflect more realistically, and various design changes and looked at trends in related research. the design Change of this study to examine the domestic status and problems, identify the status of the country about the design changes, and in suggesting the direction to the development of the design changes.

FC 2-8 : Factors associated with inflammatory change of epidermal cyst

( Jisang Yun ),( Kyung-nam Bae ),( Jin-hwa Son ),( Hoon-soo Kim ),( Hyun-chang Ko ),( Byungsoo Kim ),( Moon-bum Kim ),( Kihyuk Shin ) 대한피부과학회 2021 대한피부과학회 학술발표대회집 Vol.73 No.-

Background: Epidermal cysts (EC) are the most common tumors found on the skin and accompanying inflammation is also frequent. However, the predictors for inflammatory change have not been investigated yet. Objectives: This study was performed to investigate the difference between inflamed and uninflamed epidermal cysts, and to assess associated factors for inflammatory change. Methods: We analyzed the biopsy-proven 1723 epidermal cysts (515 inflamed and 1208 uninflamed) at two tertiary hospitals from 2011 to 2021. Results: The proportion of inflamed epidermal cysts (IEC) and uninflamed epidermal cyst (UIEC) were 29.9 % and 70.1 %, respectively. Inflammatory change was less frequently observed on the face (25.5 %) than the other sites (32.1 %) (p=0.0046). The anatomic location with the highest rate of inflammatory change was back (40.8 %, p=0.0004). Mean duration of inflammatory change from UIEC to IEC on the face was shorter than the other sites (12.5 months vs 17.9 months, respectively, p= 0.0473). On ultrasonography, long axis of IEC (20.7mm) was generally longer than that of UIEC (15.7mm) (p=0.0218). Moreover, Inflammatory change was more frequent on the EC with punctum compared to those without punctum (35.3 % vs 30.3 %, P=0.0471). Conclusion: Based on the location, size and presence of punctum, decision on the optimal treatment strategies can be established when encountering patients with EC.

Factors associated with inflammatory change of epidermal cyst

( Jisang Yun ),( Kyung-nam Bae ),( Jin-hwa Son ),( Hoon-soo Kim ),( Hyun-chang Ko ),( Byungsoo Kim ),( Moon-bum Kim ),( Kihyuk Shin ) 대한피부과학회 2021 대한피부과학회 학술발표대회집 Vol.73 No.1

Background: Epidermal cysts (EC) are the most common tumors found on the skin and accompanying inflammation is also frequent. However, the predictors for inflammatory change have not been investigated yet. Objectives: This study was performed to investigate the difference between inflamed and uninflamed epidermal cysts, and to assess associated factors for inflammatory change. Methods: We analyzed the biopsy-proven 1723 epidermal cysts (515 inflamed and 1208 uninflamed) at two tertiary hospitals from 2011 to 2021. Results: The proportion of inflamed epidermal cysts (IEC) and uninflamed epidermal cyst (UIEC) were 29.9 % and 70.1 %, respectively. Inflammatory change was less frequently observed on the face (25.5 %) than the other sites (32.1 %) (p=0.0046). The anatomic location with the highest rate of inflammatory change was back (40.8 %, p=0.0004). Mean duration of inflammatory change from UIEC to IEC on the face was shorter than the other sites (12.5 months vs 17.9 months, respectively, p= 0.0473). On ultrasonography, long axis of IEC (20.7mm) was generally longer than that of UIEC (15.7mm) (p=0.0218). Moreover, Inflammatory change was more frequent on the EC with punctum compared to those without punctum (35.3 % vs 30.3 %, P=0.0471). Conclusion: Based on the location, size and presence of punctum, decision on the optimal treatment strategies can be established when encountering patients with EC.

Improved Performance of Polymer:Polymer Solar Cells by Doping Electron‐Accepting Polymers with an Organosulfonic Acid

Nam, Sungho,Shin, Minjung,Kim, Hwajeong,Ha, Chang‐,Sik,Ree, Moonhor,Kim, Youngkyoo WILEY‐VCH Verlag 2011 Advanced functional materials Vol.21 No.23

<P><B>Abstract</B></P><P>The performance of polymer:polymer solar cells that are made using blend films of poly(3‐hexylthiophene) (P3HT) and poly(9,9‐dioctylfluorene‐co‐ benzothiadiazole (F8BT) is improved by doping the F8BT polymer with an organosulfonic acid [4‐ethylbezenesulfonic acid (EBSA)]. The EBSA doping of F8BT, to form F8BT‐EBSA, is performed by means of a two‐stage reaction at room temperature and 60°C with various EBSA weight ratios. The X‐ray photoelectron spectroscopy measurement reveals that both sulfur and nitrogen atoms in the F8BT polymer are affected by the EBSA doping. The F8BT‐EBSA films exhibit huge photoluminescence quenching, ionization potential shift toward lower energy, and greatly enhanced electron mobility. The short‐circuit current density of solar cells is improved by ca. twofold (10 wt.% EBSA doping), while the open‐circuit voltage increases by ca. 0.4 V. Consequently, the power conversion efficiency was improved by ca. threefold, even though the optical density of the P3HT:F8BT‐EBSA blend film is reduced by 10 wt.% EBSA doping due to the nanostructure and surface morphology change.</P>

대황황련해독탕의 사염화탄소 유발 간장해 보호효과 미치 급성독성

김영석,정은아,장종철,양형길,김남재,조기호,배형섭,이경섭,김동현 WHO COLLABORATING CENTRE FOR TRADITIONAL MEDICINE 2002 東西醫學硏究所 論文集 Vol.2002 No.-

ABSTRACT - This study was performed to evaluate hepatoprotective effect of daewhang-whangryunhaedok-Tang(DWT) on liver injured rats induced by CCI_4 and the acute oral toxicity of it in mice. The activities of serum transaminase(ALT/AST), alkaline phosphatase(ALP) and lactic dehydrogenase(LDH), the levels of serum total cholesterol(TC) and triglyceride(TG), change of liver enlargement, and inhibitory activities of lipid perotidation, catalase and glutathione-S-transfrease(GST) in liver microsome were determined in hepatotoxic rats induced by CCI_4. DWT was significantly reduced the serum ALT, AST, ALP, LDH. TC and TG lecels. And, the increase of lipid peroxidation, decrease of catalase and GST activities in the liver microsome of CCI_4-intoxicated rat were significantly improved by the treatment of DWT. Male and female mice were administered maximum dosages of 5.000 mg/kg b.w. of DWT. After single oral administration of DWT to mice, we observed them daily for 2 weeks.DWT did not induce any toxic signs in the mortalitie, clinical signs, body weight changes, and gross necropsy finfings of mice. Based in these results. It is concluded that DWT may have the hepatoprotective effect on CCI_4 induced hepatotoxicity in rats. Also. DWT may have no side effect and its LD_50 value may be over 5.000mg/kg b.w. in mice.

뼈에 발생한 악성 림프종 환자의 치료 효과 판정에서 ^(18)F-FDG Positron Emission Tomography의 유용성

김남돈,박연희,기승석,박용진,김형준,류백렬,김흥태,김성은,천기정,최창운,임상무 대한핵의학회 2003 핵의학 분자영상 Vol.37 No.5

원발성골림프종은 매우 드문 질환이기는 하나, 복합항암요법이나 방사선 치료등에 높은 반응율을 보이며, 좋은 예후를 가지는 림프절의 비호지킨 림프종의 일종이다. 그러나, 치료 효과 판정에 있어 골병변의 특이성에 의한 모호한 방사선학적 특징으로 어려움이 있어 왔다. 본 증례는 위와 같은 원발성골림프종 환자에서 PET 스캔을 사용하여 민감하게 완전 반응을 평가할 수 있었던 예로, 앞으로 다른 고식적인 방법과 함께 이 질환의 진단과 치료 평가 있어 유용하게 사용 될 수 있을 것으로 전망할 수 있었다. Purpose: Accurate assessment of the lesion after treatment of patients with bone lymphoma is difficult. In this patient who demonstrated complete remission after chemotherapy, the regions of fluorine-18 fluorodeoxyglucose (^(18)FFDG)PET uptake diminished more rapidly following therapy, indicating a complete response at much earlier stage than did Magnetic Resonance Imaging (MRI) or CT based findings. With the conventional methods, such as MRI and CT. It was difficult to assess whether the residual tumor tissue was viable or not. Decision to complete response is very important in patients with ymphoma to plan the further treatment. We experienced a patient with primary lymphoma of bone who revealed complete response to chemotherapy on ^(18)FFDGPET while CT showed persistent destructive bone lesion. Thus, ^(18)FFDGPET study after therapy may be superior to CT in the evaluation of response to treatment in primary lymphoma of bone.

볼트장력으로 보강된 철근 콘크리트 기둥의 실험적 연구

김도훈,원학재,김성배,김상모,이창남,김상섭 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.1(구조계)

As time goes up, structural capacity of members decreases in reinforced concrete structures. The deterioration of the capacity is mainly due to the corrosion of materials, poor construction and environmental pollution, etc. This deterioration is unavoidable, thus it is necessary to develop the method for repair and retrofit of structures in order to ensure structural safety of members. The purpose of this paper is to investigate the load-deflection, ultimate strength, failure mode, and energy absorption effect. For the test, the specimen size of column is 20cm×20cm×90cm reinforced with 4 number of main bars of 13mm diameter, tied bars of 6mm diameter. The test results show that the increasement of bolt and bolt tension's quantity improve the ultimate strength and energy absorption capacity.

林土의 有機物의 分解速度와 無機養料의 垂直分布에 關한 考察

金遵敏,張楠基,鄭玩鎬 서울대학교 교육대학원 학술연구회 1966 論文集 - 서울대학교 교육대학원 Vol.3 No.-

Kim Choon Min, Chang Nam Kee and Chung Whan Ho: Decomposition rate of plant residue and the vertical distibution of mineral nutrients in the woodland soil. The relationship between decomposition rate of litter and the amount of mineral nutrients dispersed to the soil horizons were studied on the oak and pine forest stand. The results are as follows: 1. Decomposition rate of litter was highest in the F horizon of the oak stand, however in the pine stand it was highest in H horizon. 2. The correlation coefficients between decomposition rate and humus, organic carbon, moisture content, calcium, phosphorus, and nitrogen in the pine stand are; 0.90, 0.98, 0.76, 0.98, and 0.88, in oak stand; 0.97, 0.93, 0.92, 0.97, 0.74 and 0.73. 3. Factors which affect the decomposition rate of litter are humus, organic carbon, moisture content, calcium, phosphorus and nitrogen. 4. Among the variables, PH, moisture content and phosphorus under the oak and pine forest showed significant differences in each horizon. 5. C/N ratio of pine stands is higher than that of oak stands studied. 6. The vertical distribution of mineral nutrients is highly related with the amount of humus accumulated on top soil.