http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Why hybrid porous solids capture greenhouse gases?
Fé,rey, Gé,rard,Serre, Christian,Devic, Thomas,Maurin, Guillaume,Jobic, Hervé,Llewellyn, Philip L.,De Weireld, Guy,Vimont, Alexandre,Daturi, Marco,Chang, Jong-San Royal Society of Chemistry 2011 Chemical Society reviews Vol.40 No.2
<P>Hybrid porous solids, with their tunable structures, their multifunctional properties and their numerous applications, are currently topical, particularly in the domain of adsorption and storage of greenhouse gases. Most of the data reported so far concern the performances of these solids in this domain, particularly in terms of adsorbed amounts of gas but do not explain at the atomic level why and how adsorption and storage occur. From a combination of structural, spectroscopic, thermodynamic experiments and of molecular simulations, this <I>tutorial review</I> proposes answers to these open questions with a special emphasis on CO<SUB>2</SUB> and CH<SUB>4</SUB> storage by some rigid and flexible hybrid porous materials.</P> <P>Graphic Abstract</P><P>Why and how hybrid porous solids capture gases: exploration combining appropriate <I>in situ</I> measurements and molecular simulations. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c0cs00040j'> </P>
Stable polyoxometalate insertion within the mesoporous metal organic framework MIL-100(Fe)
Canioni, Romain,Roch-Marchal, Catherine,Sé,cheresse, Francis,Horcajada, Patricia,Serre, Christian,Hardi-Dan, Menaschi,Fé,rey, Gé,rard,Grenè,che, Jean-Marc,Lefebvre, Fré,d Royal Society of Chemistry 2011 Journal of materials chemistry Vol.21 No.4
<P>Successful encapsulation of polyoxometalate (POM) within the framework of a mesoporous iron trimesate MIL-100(Fe) sample has been achieved by direct hydrothermal synthesis in the absence of fluorine. XRPD, <SUP>31</SUP>P MAS NMR, IR, EELS, TEM and <SUP>57</SUP>Fe Mössbauer spectrometry corroborate the insertion of POM within the cavities of the MOF. The experimental Mo/Fe ratio is 0.95, in agreement with the maximum theoretical amount of POM loaded within the pores of MIL-100(Fe), based on steric hindrance considerations. The POM-MIL-100(Fe) sample exhibits a pore volume of 0.373 cm<SUP>3</SUP> g<SUP>−1</SUP> and a BET surface area close to 1000 m<SUP>2</SUP> g<SUP>−1</SUP>, indicating that small gas molecules can easily diffuse inside the cavities despite the presence of heavy phosphomolybdates. These latter contribute to the decrease in the overall surface area, due to the increase in molar weight, by 65%. Moreover, the resulting Keggin containing MIL-100(Fe) solid is stable in aqueous solution with no POM leaching even after more than 2 months. In addition, no exchange of the Keggin anions by tetrabutylammonium perchlorate in organic media has been observed.</P> <P>Graphic Abstract</P><P>Keggin 12-phosphomolybdates were encapsulated into mesoporous iron trimesate MIL-100(Fe) by direct synthesis, maintaining gas accessibility and avoiding POM leaching. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c0jm02381g'> </P>
Hydrogen Storage in the Giant-Pore Metal–Organic Frameworks MIL-100 and MIL-101
Latroche, Michel,Surblé,, Suzy,Serre, Christian,Mellot-Draznieks, Caroline,Llewellyn, Philip L.,Lee, Jin-Ho,Chang, Jong-San,Jhung, Sung Hwa,Fé,rey, Gé,rard WILEY-VCH Verlag 2006 Angewandte Chemie Vol.45 No.48
<B>Graphic Abstract</B> <P>Large hydrogen-storage capacity at liquid-nitrogen temperature is exhibited by the metal–organic framework MIL-101. In the zeotype architecture of this porous solid (see picture) each intersection of the cages is occupied by a supertetrahedron formed by trimers of chromium octahedra assembled with benzene-1,4-dicarboxylate ligands. <img src='wiley_img/14337851-2006-45-48-ANIE200600105-content.gif' alt='wiley_img/14337851-2006-45-48-ANIE200600105-content'> </P>
The class number one problem for some non-normal CM-fields of degree 2<i>p</i>
Ahn, Jeoung-Hwan,Boutteaux, Gé,rard,Kwon, Soun-Hi,Louboutin, Sté,phane Elsevier 2012 Journal of number theory Vol.132 No.8
<P><B>Abstract</B></P> <P>To date, the class number one problem for non-normal CM-fields is solved only for quartic CM-fields. Here, we solve it for a family of non-normal CM-fields of degree 2<I>p</I>, p ⩾ 3 and odd prime. We determine all the non-isomorphic non-normal CM-fields of degree 2<I>p</I>, containing a real cyclic field of degree <I>p</I>, and of class number one. Here, p ⩾ 3 ranges over the odd primes. There are 24 such non-isomorphic number fields: 19 of them are of degree 6 and 5 of them are of degree 10. We also construct 19 non-isomorphic non-normal CM-fields of degree 12 and of class number one, and 10 non-isomorphic non-normal CM-fields of degree 20 and of class number one.</P>
Impact of trap localization on low-frequency noise in nanoscale device
Lee, Jae Woo,Yun, Wan Soo,Ghibaudo, Gé,rard American Institute of Physics 2014 JOURNAL OF APPLIED PHYSICS - Vol.115 No.19
The impact of oxide trap localization concerning low-frequency noise has been investigated for nanoscale field effect transistors. Various low-frequency noise behaviors induced by uniformly/non-uniformly distributed gate oxide traps have been estimated using Monte-Carlo simulation and compared to experimental data. The noise level and variability are affected by the trap concentration and the channel area for uniformly distributed traps. Localized oxide traps induce different corner frequencies and noise variability according to the mean location and the standard deviation of traps. (C) 2014 AIP Publishing LLC.
A Model-Based Analysis of Secure Video Transmission Based on IPSec and IPv4
Quang-Dao Van,Anne Wei,Benoît Geller,Gérard Dupeyrat 한국전자통신연구원 2005 ETRI Journal Vol.27 No.2
A promising solution to protect wired Internet networks is to use the Secure Internet Protocol (IPSec); however, this has some drawbacks, particularly on the quality of service (QoS). This paper aims at evaluating the video traffic QoS in terms of end-to-end delay and packet loss rate. Based on some basic assumptions, our analysis shows that the performance with IPSec is rapidly inferior to the IPv4 performance. We thus suggest adding some QoS parameters into IPSec in order to achieve a compromise between QoS and security.
Hong, Do-Young,Hwang, Young Kyu,Serre, Christian,Fé,rey, Gé,rard,Chang, Jong-San WILEY-VCH Verlag 2009 Advanced Functional Materials Vol.19 No.10
<B>Graphic Abstract</B> <P>Recent ideas concerning site-selective functionalization of chromium terephtha-late MIL-101 are discussed, focusing on the utilization of unsaturated Cr(III) sites (see image). Recent advances in synthesis, selective surface functionalization, outstanding sorption properties, encapsulation of nanoobjects, and catalytic applications in MIL-101 are also discussed. <img src='wiley_img/1616301X-2009-19-10-ADFM200801130-content.gif' alt='wiley_img/1616301X-2009-19-10-ADFM200801130-content'> </P>