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소각재의 혼합비율이 모형매립조의 침출수 수질에 미치는 영향
배준현,최봉석 안양대학교 산업기술연구소 2004 自然科學硏究 Vol.11 No.1
본 연구에서는 모형 매립조 실험을 통하여 생활쓰레기와 소각재 혼합비(소각재 100%, 생활쓰레기 50%+소각재 50%, 생활쓰레기 100%)에 따른 매립지 침출수의 수질특성을 분석하여 소각재 매립이 매립지에 미치는 영향에 대해 연구하였다.. 침하속도와 누적침하량의 시간적 변화양상은 A조의 경우에는 변화가 없었으며, B조와 C조의 경우에는 시간의 경과함에 따라 강우와 유기물분해에 의해서 침하량이 두드러지게 나타났다. 소각재만 매립한 매립조에서 침출수의 pH는 강알칼리성을 나타내었다. 소각재 혼합정도에 따른 침출수의 pH는 평균적으로 각각 12.0 (소각재 100%), 8.0 (소각재 50%), 및 6.0 (소각재 0%)이었다. 소각재를 50% 매립한 매립조(Lysimeter-B)의 경우 생활쓰레기만 매립한 매립조(Lysimeter-C)보다 초기 침출수 중의 BOD가 더 높은 농도를 나타내어, 소각재에 의한 유기물분해 방해현상에 대한 가능성을 시사해 주었다. 소각재를 매립한 매립조에서는 소각재속에 다량으로 존재하던 염소성분이 침출수로 용출되어 나오면서 침출수 중의 염소농도가 매우 높게 나타났다. Through an experiment with Lysimeter, we analyzed the water quality of Leachate according to the mixing rate of MSW and Ash and we've studied the effects of reclamation of Ash to the reclamation land. There's no difference in Lysimeter-A, but the amount of Late in Lysimeter-B and Lysimeter-C differs sharply by the decomposition of rain or organism. The pH of Leachate in the case of just Ash's reclamation indicates strong alkali. The average Leachate's pH according to the mixing rate of Ash is 12.0(Ash 100%), 8.0(Ash 50%) and 6.0(Ash 0%) each. In the case of Lysimeter-B filled in 50% of Ash, BOD of early Leachate is higher than those of Lysimeter-C. And that fact suggests the possibility of disturbance of organic decomposition by the Ash. In the case of Lysimeter filled in only Ash, much chlorine in the Ash flow out in the form of Leachate which makes the concentration of chlorine in the Leachate rises very sharply.
구리가 랫트 肝臟의 ITO細胞의 微細構造에 미치는 影響
장병준 건국대학교 1991 대학원 학술논문집 Vol.33 No.-
This study was undertaken in order to investigate the effects of copper on the perisinusoidal fat strong cells(Ito cells) in the Sprague-Dawley rat liver. 10mg CuSO_4/Kg body weight was injected into abdominal cavity daily for periods of 6,12,24 days. The morphological changes in the Ito cells were observed with electron microscope and the results were as follows: 1) The number of lipid droplets was decreased and they were atrophied. 2) The cisternae of rough endoplasmic reticulum were dilated and occupied with flocculent materials. 3) The large and small vacuoles were observed on the cytoplasm, but more frequently their arrangement were closely related with space of Disse. 4) The collagen fibrils were increased nearby the space of Disse and plasma membrane. 5) The cristae of mitochondria were arranged irregularly and autophagic vesicles were observed.
박찬상,조준,유병대,서영조,이명갑,이동필 대한응급의학회 1999 대한응급의학회지 Vol.10 No.4
Background : Incidence of traumatic hip dislocation have been increased with development of transportation. Traumatic hip dislocation demands early recognition as an emergency and prompt reduction. So we designed this study to determine what kinds of factors affect the prognosis of the patient. Methods ; Eighty five patients who admitted emergency department of our hospital with the traumatic hip dislocation were enrolled in this study. Cause of injury, type of dislocation, method of reduction, the time from dislocation to reduction, age, gender and associated patellar injury were evaluated by retrospective chart reviews. Results : Average age of excellent good group(E&G) is 28±17.8 and fair and poor group(F&P) is 39±18.6, so the older the age the more poor prognosis.(P<0.05). The time to take reduction of E&G group is 18±8.2 hours and F&P group is 25±12.6 hours, so the faster the better prognosis.(P<0.05) We classify the type of hip dislocation by Thompson and Epstein method, type Ⅰ to type Ⅴ. The prognosis of type Ⅰ is better than type Ⅴ(P<0.05). Fifty five case were associated with patellar injury and they had poor prognosis than the other cases that were not associated with knee joint injury. Conclusion : In traumatic dislocated hip patients, the prognosis was poor in old age, delay in reduction, higher type of dislocation and associated with knee joint injury.
Boung-Jun Oh,Moon-Kyung Ko,Kwnag Sang Kim,김영순,Hyun Hwa Lee,전웅배,Kyung Hoan Im 한국분자세포생물학회 2003 Molecules and cells Vol.15 No.3
Unripe mature green fruits of pepper (Capsicum annuum) are susceptible to Colletotrichum gloeosporioides, whereas ripe red fruits are not. We established this pepper-C. gloeosporioides interaction as a model system to study the fungal resistance that develops during ripening of nonclimacteric fruit. Histochemical examination of transverse sections suggested that fungal invasion 24 h after inoculation (HAI) and colonization 48 HAI are critical events that differentiate between resistant and susceptible interactions. Based on this observation, we used messenger RNA differential display to isolate defense-related genes differentially expressed at 24 and 48 HAI. RNA gel blot analysis showed that six out of eighty cloned cDNAs were differentially expressed after infection of ripe fruit. The proteins encoded by these six clones, ddP1, ddP3, ddP4, ddP6, ddP13, and ddP47, showed significant homology to aldehyde dehydrogenase, P23 protein, NP24 protein, cytochrome P450 protein, esterase, and MADS-box protein, respectively, and may be involved in the resistance of ripe fruit to C. gloeosporioides infection
Oh Boung-Jun 한국자원식물학회 2003 한국자원식물학회 학술심포지엄 Vol.2003 No.-
Clonal propagation of high-value forest trees through somatic embryogenesis (SE) has the potential to rapidly capture the benefits of breeding or genetic engineering programs and to improve raw material uniformity and quality. A major barrier to the commercialization of this technology is the low quality of the resulting embryos. Several factors limit commercialization of SE for Corsican pine, including low initiation rates, low culture survival, culture decline causing low or no embryo production, and inability of somatic embryos to fully mature, resulting in low germination and reduced vigour of somatic seedlings. The objective was to develop a Corsican pine maturation medium that would produce cotyledonary embryos capable of germination. Treatments were arranged in a completely randomized design. Data were analyzed by analysis of variance, and significant differences between treatments determined by multiple range test at P=0.05. Corsican pine (Pinus nigra var. maritima) cultures were initiated on modified !P6 medium. Modifications of the same media were used for culture multiplication and maintenance. Embryogenic cultures were maintained on the same medium semi solidified with 2.5 g/l Gelrite. A maturation medium, capable of promoting the development of Corsican pine somatic embryos that can germinate, is a combination of iP6 modified salts, 2% maltose, 13% polyethylene glycol (PEG), 5 mg!l abscisic acid (ABA), and 2.5 g/l Gelrite. After initiation and once enough tissue developed they were grown in liquid medium. Embryogenic cell suspensions were established by adding 0.951.05 g of 10- to 14-day-old semisolid-grown embryogenic tissue to 9 ml of liquid maintenance media in a 250ml Erlenmeyer flask. Cultures were then incubated in the dark at 2022<TEX>$^{\circ}$</TEX>C and rotated at 120 rpm. After 2.53 months on maturation medium, somatic embryos were selected that exhibited normal embryo shape. Ten embryos were placed horizontally on 20 ml of eithe