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RISS 인기검색어
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- 저자 : J. Hamelin (검색결과 3 건)
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Biogranules applied in environmental engineering
Milferstedt, Kim,Hamelin, Jé,rô,me,Park, Chul,Jung, Jinyoung,Hwang, Yuhoon,Cho, Si-Kyung,Jung, Kyung-Won,Kim, Dong-Hoon Elsevier 2017 INTERNATIONAL JOURNAL OF HYDROGEN ENERGY - Vol.42 No.45
<P><B>Abstract</B></P> <P>The efficiency of wastewater treatment with renewable energy generation has been greatly improved with the development of biogranules. In this review article, various types of biogranules (methanogenic, hydrogenic, aerobic, anaerobic ammonium oxidation, and oxygenic photogranules) applied in environmental engineering are introduced along with their history, theories on how they are formed, physico-chemical and morphological characteristics, and the effects on enhanced performance. Although each individual granule has its own characteristics, there might be something in common that the formation is related with high production of extracellular polymeric substances, and they all have high hydrophobicity, settling velocity, and density. To our knowledge, this is the first review article dealing with various types of biogranules. The information given herein will provide a chance for a deep understanding on biogranules in both fundamental research and engineering point of views.</P> <P><B>Highlights</B></P> <P> <UL> <LI> CH<SUB>4</SUB>- and H<SUB>2</SUB>-producing, aerobic, anammox, and oxygenic photogranules are introduced. </LI> <LI> History, formation theory, and characteristics of each granule was explained. </LI> <LI> Compared to flocculated sludge, granule system showed much higher performance. </LI> <LI> The future research area for individual granule was addressed. </LI> </UL> </P>
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Optical scattering in glass ceramics
A. Edgar,G.V.M. Williams,J. Hamelin 한국물리학회 2006 Current Applied Physics Vol.6 No.3
We analyse measurements of the optical extinction coefficient for fluorozirconate glasses containing a volume fraction of 0.2 of barium chloride nano-particles. We find that the glass ceramics are about a factor of six more transparent than predicted by Rayleigh scattering theory, based on estimates of particle sizes from X-ray diffraction and electron microscopy measurements. A numerical simulation of scattering using the discrete-dipole approximation has been made in order to investigate whether this particular discrepancy, and the ‘‘ultra-transparency’’ observed in other glass ceramics in general, can be explained by particle proximity and interaction effects as has been proposed in the literature. The simulated scattering system behaves essentially as a collection of independent scatterers up to a volume fraction of at least 25%, and so these effects are not responsible for the high transparency in this system.
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Persistent Infection of Vero Cells Initiated with SV40 DNA
Choi,Y.K.,Chung,Y.S.,Yelle,J.,Hamelin, C.,Cousineau,L. 漢陽大學校 基礎科學硏究所 1990 基礎科學論文集 Vol.9 No.-
SV40 DNA 1ng을 Vero 세포에 처리하여 영구감염 세포균주(SVP-1)를 얻었다. 영구감염 세포균주를 5회에 걸쳐서 계대배양하는 동안 배양균주로부터 추출한 DNA를 재료로 Hirt supernate 분석방법을 통하여 결손구조의 바이러스는 검출되지 않았다. 이러한 사실은 감염 초기부터 결손구조의 SV40 바이러스가 배제되거나 숙주세포의 기능에 의한 결과로 해석된다. A SV40-persistently infected cell line (SVP-1) was obtained by transfection of Vero cells with of viral DNA. During the five passages that followed initiation of the culture, no defective interfering particles were detected by analysis of Hirt supernate DNAs prepared from the cells. These results suggest that defectives are not required for th initiation of persistent infections with SV40 in this system, and that cellular factors may play a role in this process.
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