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목초액을 이용한 한국잔디 Large Patch병 방제효과
전민구,김인섭,이상철,손태권,심규열,김정남,Geon Min-Goo,Kim In-Seob,Lee Sang-Chul,Son Tae-Gwon,Shim Gyu-Yul,Kim Seong-Nam 한국잔디학회 2005 한국잔디학회지 Vol.19 No.2
살균제와 목초액을 혼용하여 우리나라 골프장의 한국잔디에 가장 문제가 되는 라지패취 병에 대한 방제효과를 검정하였다. 목초액 500, 1000배액 단독처리 시 라지패취병이 발병하는 것으로 보아 목초액 단독 처리는 라지패취 발병을 억제시키지 않았다. 살균제와 목초액 혼용처리 시에 있어서 잔디의 라지패취 병은 목초액을 혼용함으로써 Pencycuron 과 tebuconazol에서 좋은 효과가 나타났으며, 라지패취병 방제에서 Pencycuron과 tebuconazol과 목초액을 혼용 하였을 때 농약을 $50\%$ 감량하는 효과가 있는 것으로 나타났다. 목초액 혼용 농도는 500배액이나 1000배 액에서 비슷하게 나타났다 엽폭, 엽장, 건물 중 모두에서 목초액 500, 1000배액 희석처리 구의 잔디가 목초액 무처리구에 비해 증가하는 효과가 있었다. 따라서 잔디에 발생하는 라지패취병 방제시 화학약제와 목초액을 혼용하여 살포하면 농약사용량을 $50\%$ 감량하여도 기준시용 처리구와 효과가 비슷하게 나타나 목초액의 이용가능성이 확인되었다. This study was carried out to investigate control efficacy of fungicides mixed with pyroligneous acid on Large patch caused by Rhizoctonia solani AG2-2. R. solani AG2-2 was not inhibited by concentration of 500 times and 1,000 times diluents of pyroligneous acid. It is thought that R. solani AG2-2 was not inhibited by Pyroligneous acid alone. Pencycuron and tebuconazol mixed with pyroligneous acid had a good effect in prevention of R. solani AG2-2 in zoysiagrass. Concurrently, it was observed that those were reduced $50\%$ of usage of fungicides. 500 times and 1,000 times diluents of pyroligneous acid treated group had a significantly effect compared to control turf in the leaf length, leaf width and dry weight. In conclusion, usage of fungicides could be reduced about $50\%$ by a fungicides mixed with pyroligneous acid for protection of R. solani AG2-2. Therefore, It is thought that fungicides mixed with pyroligneous acids can be reduced an economic load and also an environmental pollution such as a tolerance to pathogenic bacteria and a destruction of an ecological system of soil microbes according to use fungicides.
전민구,박용현,최진희,이상현,김정수,김준,김준홍,전국진 대한의학회 2014 Journal of Korean medical science Vol.29 No.5
Pulmonary thromboembolism (PTE) is a common clinical condition related to significantmortality. Furthermore, patients with PTE presenting with right heart thrombus showhigher mortality due to rapid hemodynamic deterioration. But the optimal treatment ofmassive PTE is controversial although various methods have been developed and improved. Here, we presented a case of 56-yr-old woman with massive PTE showing hemodynamiccollapse, who was successfully treated with extracorporeal membrane oxygenation (ECMO)adjunct to thrombolytic therapy even without thrombectomy. ECMO was useful forresuscitation and stabilization of the cardiopulmonary function. In conclusion,thrombolytic therapy complemented by ECMO may be an effective treatment option foracute massive PTE with hemodynamic instability.
파이로프로세싱 배기체 요오드 포집을 위한 구리메쉬 적용 가능성에 대한 기초 연구
전민구,이태교,최용택,은희철,최정훈,박환서,허진목,안도희 한국방사성폐기물학회 2015 방사성폐기물학회지 Vol.13 No.3
본 연구에서는 파이로프로세싱에서 발생하는 배기체 내 요오드 포집을 위한 매질로서 고가의 은 기반 흡착제를 대체하기 위 한 상용 구리메쉬의 가능성에 대해 연구하였다. 열역학적 계산을 통해 구리 금속과 요오드 기체의 반응은 100 ~ 500℃ 온도 범위에서 자발적으로 일어나며 요오드화구리(CuI)를 형성할 것으로 예상되었다. 실험을 통해 반응 온도에 따른 요오드 포 집 효율의 영향을 분석한 결과, 1개의 구리메쉬(질량 0.26 g)를 이용하여 반응 온도를 300, 400℃로 변화하였을 때 각각 5 및 6 wt%의 요오드(초기질량 2.0 g)가 포집됨을 확인하였다. 또한, 반복 실험 결과를 토대로 구리메쉬 표면에 형성된 반응 생성 물(CuI)의 자발적인 탈리 현상으로 구리의 활용률이 증가할 수 있음을 확인하였다. 반응 생성물의 CuI 상 형성은 X-선 회절 실험을 통해 확인하였으며, 표면 분석은 주사전자현미경을 이용하여 수행하여 그 결과를 보고하였다. A commercially available copper mesh was investigated as an iodine off-gas capturing medium for pyroprocessing, with an aim to replace costly silver based adsorbents. Theoretical calculation results suggested that the reaction between metallic copper and gaseous iodine will occur spontaneously to produce copper iodide in the temperature range of 100 ~ 500°C. The effect of the reaction temperature on iodine capturing efficiency was investigated by experimentation, and it was found that 5 and 6 wt% of iodine (initial mass 2.0 g) was captured by a single copper mesh (0.26 g) at 300 and 400°C, respectively. The repeated experimental results also suggested that copper utilization can be increased with the help of the spontaneous detachment of the reaction product (CuI) from a copper mesh. The formation of the CuI phase was confirmed using the X-ray diffraction technique, and the surface morphology of the reaction product was observed using scanning electron microscopy.
The Effects of Cross-Section Openings on the Chlorination Reaction Rate of ZIRLO Cladding Hulls
전민구,최용택,이창화,강덕윤,허진목,안도희 한국방사성폐기물학회 2015 방사성폐기물학회지 Vol.13 No.3
The reaction rates of ZIRLO cladding hulls with cross-section openings were investigated using a thermo-gravimetric analysis system in order to identify whether selective recovery of Zr from oxidized cladding hulls is possible. The experimental results showed that an oxidized ZIRLO cladding hull was not reactive with chlorine gas at 400℃. However, providing fresh cross-sections on one or both ends of the ZIRLO hulls enabled a chlorination reaction. This reaction was completed after 8 hours; a 14% increase on the 7 hours seen with a bare ZIRLO cladding hull. The Sharp-Hancock plot analysis results revealed that the contracting volume model is the best for describing the reaction between the cross-section opened ZIRLO hulls and chlorine gas under the condition of this work. It was concluded that the chlorination process can be employed for oxidized ZIRLO cladding hulls by providing cross-section openings.
전민구,이태교,최용택,은희철,최정훈,박환서,허진목,안도희 한국방사성폐기물학회 2015 방사성폐기물학회지 Vol.13 No.3
A commercially available copper mesh was investigated as an iodine off-gas capturing medium for pyroprocessing, with an aim to replace costly silver based adsorbents. Theoretical calculation results suggested that the reaction between metallic copper and gaseous iodine will occur spontaneously to produce copper iodide in the temperature range of 100 ~ 500℃. The effect of the reaction temperature on iodine capturing efficiency was investigated by experimentation, and it was found that 5 and 6 wt% of iodine (initial mass 2.0 g) was captured by a single copper mesh (0.26 g) at 300 and 400℃, respectively. The repeated experimental results also suggested that copper utilization can be increased with the help of the spontaneous detachment of the reaction product (CuI) from a copper mesh. The formation of the CuI phase was confirmed using the X-ray diffraction technique, and the surface morphology of the reaction product was observed using scanning electron microscopy.