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평재협,신종덕 崇實大學校 1999 論文集 Vol.29 No.1
Fiber Bragg grating(FBG) has become a key passive device for applications in fiber-optic communications. It also has a great potential in a wide range of sensing applications for the measurement of strain, temperature, pressure, etc. In this paper, we report experimental results on a temperature/strain sensor composed of a bare FBG and a solder-clad FBG connected in cascade. Since the Bragg wavelength of the solder-clad FBG does not change with strain and its sensitivity is four times as large as that of the bare FBG up to 110℃, it was used to measure temperature. On the other hand, strain information was obtained from the reflection wavelength difference between the two FBGs.
함규황,유재평 경남대학교 환경문제연구소 1993 환경연구 Vol.15 No.-
This report was survey conducted on the distribution of migratory birds in the estuary of Naktong-river from February, 1988 to December, 1990. 1. During the 35 months survey period a total of 321,336 individuals, 82 species, 17 families, 10 orders were observed. 2. Species of dominance were observed in the order of Mallard, Anas platyrhynchos (27.63%), Black-tailed Gull, Larus crassirostris (9.11%), Pochard, Aythya ferina (8.74%), Black-headed Gull, Larus ridibundus (6.49%), Bean Goose, Anser fabalis (5.44%), Wigeon, Anas penelope (5.97%), Spot-bill Duck, Anas poecilorhyncha (5.34% ) 3. Density of individuals to a square kilometer at the brackish and fresh water were recorded by a high density respectively to Mallard and Pochard. 4. Among observation birds throughout the two winter (1988. 10~1989. 3, 1989. 10~1990. 3), the speceis of ANATIDAE was recordedby the respectively to 21 species, 77,979 individuals (76.89% ) and 20 species 52,188 individuals (68.32% ). 5. Average of species diversity(H') and number of equally common species(eH') were recorded by a high value respectively to 1990 (1.983) and 1955(7.798).
백서 적혈구에서 glutathione이 paraquat 독성에 미치는 영향
김명철,박재윤,채기영,천영욱,박평심,차종희 朝鮮大學校 附設 醫學硏究所 1991 The Medical Journal of Chosun University Vol.16 No.2
The participation of superoxide in initiating tissue damage from administration of a xenobiotics is best illustrated by paraquat intoxication, in which it is known that one electron reduction of paraquat leads to the formation of radicals which react with molecular oxygen to give superoxide. In the present study, the effects of paraquat on the level of glutathione and activities of superoxide dismutase(SOD), catalase, glutathione peroxidase, glutathione reductase and glutathione stransferase were investigated in rat liver and erythrocytes. The contents of glutathione in liver and blood were sinificantly decreased by paraquat administration, but the activities of enzymes were unaltered. Incubation of the buffered aerobic mixture of erythrocyte in the presence of 5mM glucose, Paraquat and/or N-ethylmaleimide(NEM) resulted in the formation of lipid peroxide, the activities of various enzyme and the levels of glutathione were determined. The malondialdehyde(MDA) contents as a indicator of lipid peroxidation was decreased and the levels of total glutathione were not changed but the levels of oxidized glutathione(GSSG) were in creased in paraquat treated erythrocytes. The activites of ezyme were decreased in paraquat treated erythrocytes but in reduced glutathione(GSH) treated erythrocyte, the enzymes activities were less decreased by paraquat. These results suggest that paraquat toxicity was probably somewhat reduced by GSH, but paraquat-induced injury were not increased by GSH depletion in erythrocytes.
咸奎晃,兪在平 경남대학교 환경문제연구소 1992 환경연구 Vol.14 No.-
This survey was the first ever made on the birds of the Daechung lake, Ch'ungch'ongbuk-do, from October 26, 1990 to October 9, 1991. The census of 10,090 birds, cf 83 species, 30 families, 12 odor of Spot-billed Duck, Anas poecilohyncha 15.97%, Rustic Bunting, Emberiza rustica 7.97%, Korean Crow Tit, Paradoxrnis webbiana 6.67% were recorded to be dominant species which were characteristic species of their habitat(of. Table 2, Fig. 3).
咸奎晃,白雲起,兪在平,崔在植 경남대학교 환경문제연구소 1992 환경연구 Vol.14 No.-
For the purpose of contribution to wild birds protection, distribution characteristics and ecological breeding habits were surveyed in Mt. Chiri from October 1989 to October 1991 by the use of the nestboxes installed in four study sites by the altitude. 1. The census of birds of 80 species, 27 family, 9 order of birds recorded in Mt. Chiri. 2. In the inhabitation structure of birds by altitude, Fringilla montifringilla were the dominance (18.29%) among the survey area. 3. The nestboxes(66.5%) were mainly used by the smal birds, Parus sp. and sitta europαea. 4. The utilization rate of tile nestboxes were showed 64% at 500m, 78% at 900m, 76% at 1,450m, 48% at 1,750m above the altitude, respectively. 5. The breeding rates of birds in the nestboxes were showed from 6% to 46% by altitude. Parus varius were the highest breeding species in the surveyed area. 6. Food items of the chicks of the 5 species collected by the coiler method were animal matters : 91.3% of the food were forest insects such as Phalera asiimilis and Pleuroptya batteata except 8.7% of spiders.
( Pyoung-jae Park ),( Tae Wan Lim ),( Sae Byeol Choi ),( Wan Bae Kim ),( Sang Yong Choi ) 대한간학회 2016 춘·추계 학술대회 (KASL) Vol.2016 No.1
Purpose: Associating liver partition and portal vein ligation for staged hepatectomy (ALPPS) has recently been developed for patients with predicted insufficient future liver remnant volumes to induce more rapid hepatic hypertrophy and increase resectability. It has been usually performed for metastatic liver cancer from colorectal cancer, but few reports about ALPPS for hepatocellular carcinoma, especially in the liver cirrhosis combined portal hypertension were published. Especially, any treatment options of huge HCC under liver cirrhosis with portal hypertension were not proper. We reported a successful case of ALPPS for huge HCC combined with liver cirrhosis and portal hypertension. Methods: A 58-year-old female patient was admitted for abdominal pain for 3 months. She had a history of chronic hepatitis B, but it was not treated. On abdominal CT, about 20cm sized huge heterogeneously enhancing mass was identified and replaced to the right hepatic lobe. Right glisson and right hepatic vein were compressed and it invaded to middle hepatic vein and segment 4. Nodularity of liver surface, moderate splenomegaly and enlarged varices were identified. AFP level was severely increased to 158389 ng/mL and PIVKA-II level was over 100,000 mAU/mL. ICG 15(%) was checked to 48.2%. It was suggested to severe liver cirrhosis and inoperable state. The future remnant liver volume (LLS+S1) on CT volumetry was 306 mL (291+15). Severe post-hepatectomy liver failure was strongly expected and so ALPPS was planned. Results: During 1st stage operation, the partition between left lateral section and S4, right anterior portal vein ligation was performed. The partition plane was covered with Proceed mesh. The reason of right anterior portal vein ligation was that cental hepatectomy was preferred to right tri-sectionectomy if right tri-sectionectomy would make post-hepatectomy liver failure even though ALPPS was performed. Total bilirubin level was increased to 2.22 mg/dL but CT volume of left lateral section was increased to 387 mL at postoperative 12 days. 2nd stage operation was performed at 14 postoperative days. During 2nd stage operation, anatomical central hepatectomy was performed without sacrifice of the right posterior section with right posterior glisson and right hepatic vein. Total bilirubin level was increased to 5.13 mg/dL on new postoperative 1 day, but it was recovered to normal range on postoperative 12 days. CT remnant liver volume (SLLS+S1+RPS) was 589mL (395+16+178) at postoperative 8 days although biloma was identified at resection area. She recovered at postoperative 1 month. Conclusion: Although the validity and oncologic safety of ALPPS were not yet fully investigated, ALPPS for HCC under severe liver cirrhosis with portal hypertension was possible and more studies are needed to further evaluate its effectiveness and oncological outcomes. Figure 1. (A) preoperative CT shows that huge HCC (>20cm) compresses of right glisson; (B) CT between 1st stage and 2nd stage operation shows increased volume of left lateral section and the partition between left lateral section and S4 (blue arrow); (C) CT after 2nd stage operation shows succesful central hepatectomy. Figure 2. (A) Huge HCC underlying severe liver cirrhosis was identified during 1st operation, (B) 1st stage operation: the partition between left lateral section and S4, right anterior portal vein ligation The partition plane was covered with Proceed mesh, (C) 2nd stage operation: the anatomical central hepatectomy.
Jae-Pyoung Yu(유재평),Byun-Sun Chun(전병선),In-Kyu Kim(김인규),Jeong-Hoon Kang(강정훈),In-Hwan Paik(백인환),Kyu-Hwang Hahm(함규황),Woon-Kee Paek(백운기) 한국조류학회II 2006 한국조류학회지 Vol.13 No.1
본 연구는 천연기념물 335호 해조류번식지로 지정되어 있는 홍도에서 1988년 4월 초순에서 7월 중순까지 70개의 괭이갈매기 둥지에서 산란에서 이소까지의 번식생태에 관하여(알 크기와 낳는 순서가 새끼의 부화율과 성장률에 미치는 영향에 대하여) 조사한 것이다. 괭이갈매기의 한배산란수는 2.43±0.51개 였고, 포란기간은 평균 26.4일(범위 24~29일, n=31)이었다. 알 측정치의 평균은 장경 61.3±2.3㎜, 단경 43.1±1.3㎜, 무게 56.1±3.7g이었고, 새끼의 무게는 부화시 49.3±8.7g이었고, 5일경 무게는 110.6±25.5g, 10일경 무게 235.9±37.8g이었다. 부화율은 91.11%였고, 생존율은 81.71%였으며, 생존율은 15일까지 생존해 있는 새끼들을 대상으로 계산하였다. 첫 번째 낳은 알이 두 번째, 세 번째 낳은 알보다 무거웠으며, 부화율, 생존율 또한 높았다. 따라서 산란 순서는 새끼가 부화하고 생존하는데 상당히 중요한 요인이 되고 있다는 것을 의미한다. This research aims at explicating the influence of egg size and the order of laying on the hatching rate and the livability in seventy nests of Larus crassirostris from early April to mid July in 1988 in Hongdo, a place designated as Natural Monument No. 335 for a breeding place of seabirds. The average number of brood is 2.43±0.51, and the period of the Black-tailed Gulls' incubation is 26.4 days in average (Range 24~29 days, n=31). The size of the egg was 61.3±2.3㎜ in the major axis and 43.1±1.3㎜ in the minor axis respectively, and the weight was 56.1±3.7g. The weight of the first chick was 49.3±8.7g, and the weight of the first chick. On the fifth day and tenth day after hatching, was 110.6±25.5g and 235.9±37.8g respectively. The hatching rate was 91.11% and the livability was 81.71%. The livability was calculated by investigating chicks survival until 15 days after hatching. The results showed that the first eggs are a slightly bigger and heavier than the second and third one. Furthermore, the hatching rates of the first and second-laid eggs are higher than the third one, as well as the livablity of the two eggs. Therefore, it could be concluded that the size of the egg and the order of egg-laying have important influences on the hatching rate and livability.