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RISS 인기검색어
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작업기억에 부과되는 인지부하가 마인드맵 지원 유형에 따라 창의적 사고력에 미치는 영향 = The Effects of the Cognitive Load Imposed on Working Memory and the Types of Mind-maps on the Creative Thinking Skills
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Eine jejunale Obstruktion mit ungewöhnlicher Ursache
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New media^ old regimes : case studies in comparative communication law and policy
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Understanding Smartphone-based Online Shopping Experiences and Behaviors of Blind Users
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국내 휴대폰의 진화패턴 규명을 위한 텍스트 마이닝 방안 제안 및 사례 연구
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내열성이 향상된 페놀수지 기반 우레탄 폼
- 검색키워드
- 저자 : Pisith, Sok (검색결과 2 건)
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Effect of rice husk gasification residue application on herbicide behavior in micro paddy lysimeter.
Ok, Junghun,Pisith, Sok,Watanabe, Hirozumi,Thuyet, Dang Quoc,Boulange, Julien,Takagi, Kazuhiro Springer Verlag 2015 Bulletin of environmental contamination and toxico Vol.94 No.6
<P>Effects of rice husk gasification residues (RHGR) application on the fate of herbicides, butachlor and pyrazosulfuron-ethyl, in paddy water were investigated using micro paddy lysimeters (MPLs). The dissipation of both herbicides in paddy water was faster in the RHGR treated MPL than in the control MPL. The average concentrations of butachlor and pyrazosulfuron-ethyl in paddy water in the lysimeter treated with RHGR during 21 days were significantly reduced by 51% and 48%, respectively, as compared to those in the lysimeter without RHGR application. The half-lives (DT50) of butachlor in paddy water for control and treatment were 3.1 and 2.3 days respectively, and these values of pyrazosulfuron-ethyl were 3.0 and 2.2 days, respectively. Based on this study, RHGR application in rice paddy environment is an alternative method to reduce the concentration of herbicide in paddy field water and consequently to reduce potential pollution to aquatic environment.</P>
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Effect of annealing treatment on luminescence property of MgO nanowires
Thanut Jintakosol,Pisith Singjai 한국물리학회 2009 Current Applied Physics Vol.9 No.6
Magnesium oxide nanowires (NWs) were synthesized by a current heating process. The effect of annealing treatment in air on their structural and optical characteristics was investigated. As-grown NWs in diameter ranging from 30 to 70 nm and length up to several 10 ㎛ were obtained. Carbon-coating layers were observed in the as-grown NWs which were oxidized during the annealing treatment at high temperature. Ionoluminescence spectra of the as-grown and annealed NWs have showed two emission peaks centered at 360 nm (UV emission) and 492 nm (green emission). The intensities of green emission were maximum at the annealing temperature of 650 ℃ for 2 h, whereas those of UV emission were decreased with increasing the annealing temperature. It is anticipated that maximum green emission correlates to the sufficient density of oxygen vacancies which was occurred by the optimum annealing parameters of both temperature and time. Magnesium oxide nanowires (NWs) were synthesized by a current heating process. The effect of annealing treatment in air on their structural and optical characteristics was investigated. As-grown NWs in diameter ranging from 30 to 70 nm and length up to several 10 ㎛ were obtained. Carbon-coating layers were observed in the as-grown NWs which were oxidized during the annealing treatment at high temperature. Ionoluminescence spectra of the as-grown and annealed NWs have showed two emission peaks centered at 360 nm (UV emission) and 492 nm (green emission). The intensities of green emission were maximum at the annealing temperature of 650 ℃ for 2 h, whereas those of UV emission were decreased with increasing the annealing temperature. It is anticipated that maximum green emission correlates to the sufficient density of oxygen vacancies which was occurred by the optimum annealing parameters of both temperature and time.
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