Báo cáo hóa học: "GEOMETRIC AND APPROXIMATION PROPERTIES OF SOME SINGULAR INTEGRALS IN THE UNIT DISK" doc
Báo cáo hóa học: "GEOMETRIC AND APPROXIMATION PROPERTIES OF SOME SINGULAR INTEGRALS IN THE UNIT DISK" doc
... (4.7) The reasonings in the case of Wξ( f )(z) are similar. The proof of continuity on D of Wξ( f ) and W∗ξ( f ) i s similar to that for Pξ( f )intheproofofTheorem 2.1(i).It remains to ... to obtain similar properties for the above-defined complex singular integrals. 2. Complex Picard integrals In this section, we study the properties of Pξ( f )(z).Firstly, we present the approximation ... several results in approximation by complex Pi-card, Poisson-Cauchy, and Gauss-Weierstrass singular integrals with Jackson-type rate,having the quality of preservation of some properties in geometric...
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báo cáo hóa học:" Synthesis and Magnetic Properties of Nearly Monodisperse CoFe2O4 Nanoparticles Through a Simple " docx
... surface of CoFe2O4. The peak at 3,007 cm-1is assigned to the stretching of the vinyl group. The peaks at 2,921 and 2,850 cm-1are attributed to the asymmetric and symmet-ric stretching of the ... is a singlecrystal [19]. Figure 2b performs the high-resolution (HR)TEM characterizations of the particles, and the highlycrystalline nature of the samples is revealed in the inset of Fig. ... Teflon-lined stainless autoclave with acapacity of 150 ml. In order to crystallize the particles, the reaction temperature of the autoclave was increased and maintained at 180°C for 12 h. Then, the system...
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Báo cáo hóa học: " Synthesis and magnetic properties of Zr doped ZnO Nanoparticles" docx
... at RT. Combining with the results of Raman and XPS, we suppose that the FM of the Zn1-xZrxO NPs is owing to t he oxygen vacanciesinducing by doping of the nonmagnetic element of Zr.AcknowledgementsThis ... (M-H)atRT of samples are revealed in Figure 6, where the con-tributions of the paramagnetism (PM) signals of the samples were deducted. In the inset of Figure 6, whichdisplays the M-H curves of the ... post-annealing. All the samples have the clear RTFM, and Msper Zr atom of samples is sen-sitive to the content of Zr, and decreases continuouslyas the i ncrease of the doping Zr content through the magnetic...
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Báo cáo hóa học: " Structural and physical properties of antibacterial Ag-doped nano-hydroxyapatite synthesized at 100°C" pptx
... min. Meanwhile, the pH of P-containing solu-tion was adjusted to 10 with NH3 and stirred continu-ously for 30 min. The P-containing solution was addeddrop-by-drop into the [Ca + Ag]-containing ... provide the direct information about the size and typical shape of the as-prepared samples. The results suggest that the doping Ag+has little influence on the morphology of the HAp. The samples ... evidence for the successfuldoping of Ag+, in Ag:HAp. The inhibition of bacteria containing different concen-trations of HAp (x = 0) and Ag:Hap (x = 0. 2) nanopow-ders was investigated in Staphylococcus...
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Báo cáo hóa học: "Fabrication and magnetic properties of granular Co/porous InP nanocomposite materials" ppt
... avenue for nanofabrication.With the increasing deposition time of Co, the size or con-tent of granular Co embedded in the InP templateincreases, and the m agnetic behavior of such Co/InPnanocomposites ... participated in the design of experimental section and offered her the help in experiments. WZS gavehis help in the setting up of experimental apparatus.Competing interests The authors declare that they ... shown in Figure 4b. This indicates that the Co particles embedded in the InP matrix dominate the magnetic behavior of this Co/InP nanocompositewhen the content of Co gradually increases due to the Figure...
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Báo cáo hóa học: " Electronic and magnetic properties of SnO2/CrO2 thin superlattices" doc
... the ab initio calculations, participated in the analysis, and drafted the manuscript. LS and PB conceived of the study. HA, ES, LA, and LS participated in the analysis and in the production of ... density of states(PDOS) for the Cr-d orbital, (c) Band structure, for spin up and spin down, along the main symmetry lines of the SL BZ. The Fermi level, EF, is setto zero in (a), (b), and (c).-9-6-30369-40-30-20-1001020304001234Density ... with the Cr 3d orbitalappearing in the gap region, characterizing a metallic-likebehavior for the majo rity sp in and a semiconductor-likebehavior for the minority spin. The band structures of...
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Báo cáo hóa học: " Synthesis and Photoluminescence Properties of Porous Silicon Nanowire Arrays" pdf
... by the increased porosity. Furtherstudies including the decomposition of the PL spectrum and the FTIR analysis confirm that the surface of the HF-treated porous SiNWs are composed of Si–Hx and ... study the optical properties of the porous SiNWs.Figure 6a and b display the PL spectrums of the porousSiNWs with different H2O2concentrations and etchingFig. 2 SEM and TEM images of the ... parameters, including the etchant concentration, etchingtime and post-treatment. The variable morphology of the SiNWs is present, and the etching mechanism is discussed. The photoluminescence (PL) properties...
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Báo cáo hóa học: " Synthesis and Magnetic Properties of Maghemite (c-Fe2O3) Short-Nanotubes" ppt
... incorporated sulfate ions in the preparing process, corre-sponding to the one band of the v1 mode and two bands of the v3 mode (C3vsymmetry), respectively [24]. The ATR-FTIR spectra of ... physical and chemical properties based on their high intrinsic anisotropy and surface activity[4, 5]. Especially, understanding the correlation between the magnetic properties and the morphology of ... lattice spacing of 0.252 nm and 0.295 nm,which can be indexed to the (311) and (220) planes of cubic c-Fe2O3. And the HRTEM image take from the tubewall of the selected area marked b# in Fig....
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báo cáo hóa học:" Structural and optical properties of a radio frequency magnetron-sputtered ZnO thin film with different growth angles" pdf
... be increased by around 10%. In general, the refractiv e index of a thin film is variableaccording to the kind of material and thickness of the films. It is addressed that a medium refractive index ... antireflection coating [ARC] whichalso has a function of passivation [1]. ARCs generallyreduce the reflection of sunlight and increase the intensity of radiation on the inside of solar cells. With the antire-flectio ... largest grain size of 59.01 nm, and the 0° angled columnar structured filmhad the lowest grain size of 25.95 nm. These resultsshowed that intensity and grain sizes varied according to the growth...
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Báo cáo hóa học: " Structure and Photoluminescent Properties of ZnO Encapsulated in Mesoporous Silica SBA-15 Fabricated by Two-Solvent Strategy" doc
... decrease with increasing ZnOloading. This implies that ZnO should exist in the channels of SBA-15. In addition, the in ection point of the capillarycondensation step on the isotherm shifts to ... relativepressure with increasing ZnO loading, indicating the reduction of the mesopore size. This also suggests that ZnOshould be successfully incorporated into the channels of SBA-15. In our work, the extracted ... decreases, if the size of the ZnO particle decreases to the order of the Bohrradius. The band edge emission shows a blue shift [6]. The blue shift of the UV near-band-edge emission of the ZnO/SBA-15...
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