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Large scale synthesis, characterization and photoluminescence properties of amorphous silica nanowires by thermal evaporation of silicon monoxide

Large scale synthesis, characterization and photoluminescence properties of amorphous silica nanowires by thermal evaporation of silicon monoxide

... single step non-catalytic process based on thermal evaporation of silicon monoxide has beenestablished for large- scale synthesis of silica nanowires. Scanning electron microscopy, high-resolutiontransmission ... this paper, we report large- scale synthesis of pure silica(SiO2) nanowires by a non-catalytic approach based on thermalevaporation of SiO under argon ambient with traces of oxygen.The process ... three-step mechan-ism involving (i) diffusion of Si/SiOxvapors into the metalparticles, (ii) formation of liquid droplet of metal and Si/SiOx and (iii) the precipitation in the form of solid...
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Đề tài

Đề tài " Global well-posedness of the three-dimensional viscous primitive equations of large scale ocean and atmosphere dynamics " doc

... t)dξ∂T2∂z=0,Annals of Mathematics Global well-posedness of the three-dimensional viscous primitive equations of large scale ocean and atmosphere dynamics By Chongsheng Cao and Edriss S. ... comments and suggestions. This work was supported in part by NSFgrants No. DMS-0204794 and DMS-0504619, the MAOF Fellowship of theIsraeli Council of Higher Education, and by the USA Department of ... Theory of the Navier-Stokes Equa-tions, Vol.I&II,Springer-Verlag, New York, 1994.[15]F. Guill´en-Gonz´alez, N. Masmoudi, and M. A. Rodr´iguez-Bellido, Anisotropic esti-mates and strong...
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A simple large scale synthesis of very long aligned silica nanowires

A simple large scale synthesis of very long aligned silica nanowires

... nano- scale optical wires are of both scientific and tech-nological interest because of their potential appli-cations for localization of light, low-dimensionalwaveguides, and scanning near-field ... production of large- quanti-ties of high-purity (no metal catalysis contamina-tion) and ultralong (millimeters) SiO2nanowires(most of the wires have uniform diameters of $50nm, while some of them ... simple large- scale synthesis of very long alignedsilica nanowiresJ.Q. Hu1, Y. Jiang, X.M. Meng, C.S. Lee, S.T. Lee*Department of Physics and Materials Science, Center of Super-Diamond and...
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Báo cáo khoa học:

Báo cáo khoa học: "Large-Scale Induction and Evaluation of Lexical Resources from the Penn-II Treebank" potx

... qualityin terms of precision and recall against manuallyconstructed, gold-standard f-structures for 105 ran-domly selected trees from section 23 of the WSJsection of Penn-II. The algorithm ... 78.2% and recall 58.7%.Carroll and Rooth (1998) use a hand-writtenhead-lexicalised context-free grammar and a textcorpus to compute the probability of particular sub-categorisation scenarios. ... equation). Trees are tra-versed top-down, and annotation is driven by cate-gorial, basic configurational, trace and Penn-II func-tional tag information in local subtrees of mostlydepth one (i.e....
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Báo cáo

Báo cáo " Sol-gel synthesis and particle size characterization of CdSe Quantum dots " ppt

... VNU Journal of Science, Mathematics - Physics 25 (2009) 20 7-2 11 207 Sol-gel synthesis and particle size characterization of CdSe Quantum dots Khong Cat Cuong1, ... synthesis of one-dimensional nanostructure because of their high efficiency, controllability, simplicity and versatility. Hydrothermal techniques have been widely applied for the synthesis of ... TEM images of samples show that the mean sizes of QDs are 4 nm. The mean sizes of QDs are smaller than that of other methods and arranging from 2 to 3.6 nm. 1. Introduction Size-dependent...
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Báo cáo Y học: Cellular stresses profoundly inhibit protein synthesis and modulate the states of phosphorylation of multiple translation factors potx

Báo cáo Y học: Cellular stresses profoundly inhibit protein synthesis and modulate the states of phosphorylation of multiple translation factors potx

... antibodies for eIF4E and 4E-BP1. Thepositions of migration of eIF4E and 4E-BP1 are indicated. 4E-BP1 generally appears as two bands corresponding to the a and b species of 4E-BP1.The signal for ... overallrate of protein synthesis in the short term [15], it is unlikelythat the stress-induced dephosphorylation of 4E-BP1 and loss of eIF4F complexes is a major cause of the inhibition of protein synthesis ... binding of this repressorprotein to eIF4E. Binding of 4E-BP1 to eIF4E correlatedwith loss of eIF4F complexes. Sorbitol and hydrogen per-oxide each caused inhibition of the 70-kDa ribosomal pro-tein...
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Synthesis of large scale sic–sio2 nanowires decorated with amorphous carbon nanoparticles and raman and PL properties

Synthesis of large scale sic–sio2 nanowires decorated with amorphous carbon nanoparticles and raman and PL properties

... agreement with the results of XRD and TEM. Two peaks centered at $1337 and $1592 cmÀ1oftencalled as D- and G-band, respectively confirm the existence of car-bon [22–25]. The D-band is known as to ... ratio of two bands, ID/IG, can be expressed as follows:IDIG¼CðkÞLawhere C(k) is 4.4 nm for incident laser wavelengths of 514 nm[28,29]. The intensities of the D-band and G-band were ... decomposi-tion of ethanol was used to produce carbon source for synthesis of this nanostructure. Strong enhancement of blue emission band and appearance of a new yellow emission band were observedfrom...
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Synthesis and characterization of semiconducting nanowires for gas sensing

Synthesis and characterization of semiconducting nanowires for gas sensing

... investigation of the termination of the nanowire lateral sides and apex. Electron diffraction (ED) and analysis of zero-order and higher-order Laue-zones allowsprecise determination of unit cell and space ... with the High-Angle-Annular-Dark-Field detector (STEM-HAADF) wereused for the investigation of the shape of the nanowires and impurities and local variations in the composition (Z-contrast).3.1. ... silicon processing and to other top-down approaches.A potential application of nanowires is gas sensing, whichMOX are widely employed for. Tin-, indium-, and zinc-oxidenanowires may constitute...
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Tài liệu Stability and Control of Large-Scale Dynamical Systems pptx

Tài liệu Stability and Control of Large-Scale Dynamical Systems pptx

... to Discrete-Time Large- Scale Linear Dy-namical Systems 1738.5 Stability of Feedback Interconnections of Discrete-Time Large- Scale Nonlinear Dynamical Systems 177CONTROL OF LARGE- SCALE SYSTEMS ... Kalman-Yakubovich-Popov Conditions for Large- Scale Nonlinear Dynamical Systems 613.4 Specialization to Large- Scale Linear Dynamical Systems 683.5 Stability of Feedback Interconnections of Large- Scale Non-linear ... Finite-Time Stabilization of Large- Scale Dynamical Systems 1146.4 Finite-Time Stabilization for Large- Scale Homogeneous Systems 1196.5 Decentralized Control for Finite-Time Stabilization of Large- Scale...
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Tài liệu Experiences of Plantation and Large-Scale Farming in 20th Century Africa pdf

Tài liệu Experiences of Plantation and Large-Scale Farming in 20th Century Africa pdf

... buy land from a landlord. In contrast to the Irish and French sharecrop - ping cases of Young and McCulloch, Thorn - ton cited examples from Switzerland, the Netherlands and parts of Scandinavia ... on subdivision of settler land and/ or consolidation of peasant hold - ings,26 using farm plans, model budgets and target incomes, and often linked to PF ‘nu - cleus estates’ and processing ... agricultural land, liberalization of the land market by permit - ting voluntary subdivision of LSFs, and as - sistance to an increased number of resettle - ment schemes. Thus, in practice, the land reform...
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