Effect of Heat Treatment Conditions on the Properties of FePt Nanoparticles Produced by Sonochemistry
Tài liệu Báo cáo "Effect of the preparation conditions on the properties of Fe-Pt nanoparticles produced by sonoelectrodeposition " pptx
... composition of the Fe-Pt nanoparticles was controlled by adjusting the current density (corresponding to the applied voltage) When the current density of 15 – 20 mA/cm2, the composition of nanoparticles ... [21] The broad peak on the DSC trace in the FePt nanoparticles suggests that there was no such transition in the FePt nanoparticles upon annealing The formation of the L10 FePt phase was N.H Luong ... degassing of the electrode surface, and an increased reaction rate [15] In this paper, we report the use of the sonoelectrochemical method for the preparation of FePt nanoparticles Experimental The sonoelectrochemical...
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Báo cáo toán học: " Influence of different flow conditions on the occurrence and behavior of potentially hazardous organic xenobiotics in the influent and effluent of a municipal sewage treatment plant in Germany: an effect-directed approach" pot
... of fraction with the concentration levels of the pharmaceuticals diclofenac and carbamazepine In contrast, the toxicity of fractions 1, 3, and was probably caused by organic contaminants in additional ... solutions of the analytes and the internal standards were prepared both in methanol and hexane and stored at 7°C The working standard solutions were prepared by further diluting the stock standard ... For the quantitation of the analytes, a 5-point (PAHs) and a 7-point (pharmaceuticals) internal standard calibration was used The limit of detection and the LOQ were calculated on the basis of...
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A CFD analysis on the effect of ambient conditions on the hygro-thermal stresses distribution in a planar ambient airbreathing PEM fuel cell
... Maher A. R Sadiq Al-Baghdadi A CFD study of hygro-thermal stresses distribution in tubularshaped ambient air-breathing PEM micro fuel cell during regular cell operation International Journal of Energy ... differential between the fuel cell stack and the operating environment make thermal management a challenging problem in PEM fuel cells As the ambient temperature increases, the air-breathing fuel cell ... to the onset of pore plugging, which has a detrimental effect of the fuel cell performance 2.1 Computational domain The full computational domains for the planar air-breathing PEM fuel cell consists...
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The effect of annealing conditions on the red photoluminescence of nanocrystalline Si/SiO films
... Solid Films 425 (2003) 175–184 Therefore, the main role of hydrogen here is the effective passivation of nonradiative recombination centers 3.4 The effect of annealing times upon 400 8C annealing ... oscillations of the red PL upon 400 8C annealing It was found that upon 400 8C annealing, during the decay process of the PL centers (blueshift of the PL), a short time annealing causes the recovery of ... by Si-NL8 states The red PL consists of these two states The peak energy and the PL intensity are determined by the concentrations of these two components at the corresponding annealing temperature...
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thermal treatment effects on the material and gas-sensing properties of room-temperaturetungstenoxidenanorodsensors
... performed by the user software programmed under LabVIEW (NI) environments with a typical sampling rate of Hz Results and discussion 3.1 Thermal treatment effects on the material properties As-deposited ... Ar-annealing condition: the onset of recrystallization is around 550 ◦ C and the columnar crystals grow larger when an anneal temperature reaches above 600 ◦ C On the other hand, dry air and O2 anneal treatments ... with the two components corresponding to W6+ and W5+ oxidation states Table summarizes the parameters used in the deconvolution of W 4f XPS peaks, i.e the binding energy of the W 4f7/2 , FWHM and...
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Báo cáo " Effects of the conditions of the microemulsion preparation on the properties of Fe3O4 nanoparticles " pot
... Q in the other microemulsion, upon mixing, they will form precipitate PQ, which will be contained entirely within the aqueous cores of the microemulsions The growth of these particles in microemulsions ... diffusion of solutes from the solution or/and aggregation of other nuclei to their surface until the final size was attained In conventional coprecipitation, size (d) can be controlled by concentration ... understood by the fact that the reaction could not complete under these conditions Whereas, magnetic properties of samples of type B were ferromagnetic with the saturation magnetization Ms of 50 emu/g...
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Research report: "To study the effect of substituents on the properties of aniline by the method of approximate quantum AM1" pps
... Correlation of the dipole moment with the Hammett constants of the substituents It is evident from the table II that electron-donating substituents on the phenyl ring increase the pKa of anilines ... Correlation of QN with the Hammett constants of the substituents According to the table 2, electron-donating substituents decrease the dipole moment of compounds and electron-withdrawing substituents ... representative properties: the C-N bond length (d(C-N)), charge on atom N (QN), dipole moment(à) and the acid dissociation constant (pKa) The results of geometry optimization of aniline by AM1 method...
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Báo cáo vật lý: "The Effect of Triethylene Diamine on the Properties of Waste Paper Foam Composites" ppsx
... CONCLUSION The effect of TEDA as a catalyst and waste paper filler content on the mechanical properties of waste paper foams has been investigated The results indicate that increasing the waste paper ... production of waste paper foam The differences in the liquefaction behaviour of the waste paper are due to their different chemical compositions The compressive strength results for waste paper foam ... present the chemical composition of the organic and inorganic components of the waste paper The addition of fillers, which serve to reinforce the foam, significantly increased the value of the compressive...
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Effect of heat transfer law on the finite time exergoeconomic performance of a generalized irreversible carnot heat engine
... (35) and (36) are the relations between profit rate and efficiency of the irreversible Carnot heat engine based on the radiative heat transfer law The relationships between the profit rate and ... total heat transfer surface area of the two heat exchangers is taken as a constant , that is F1 + F2 = FT (12) And a ratio ( f ) of heat exchanger area is defined as f = F1 F2 (13) Assuming that the ... ) (9) Figure The generalized irreversible Carnot heat engine cycle model Assuming the rates of the heat flow in the heat- exchangers follow the generalized radiative heat transfer law, q ∝ ∆(T...
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Effect of size and volume fraction of reinforcement on the properties of light metals
... ease of processing a wide variety of matrix metals, and the control of orientation and volume fraction of the fibers The main problems associated with this process are fiber degradation and thermal ... volume fractions of reinforcement are possible, thus maximizing the improvement of the properties of the matrix The main difficulty in this process is the removal of the binder used to hold the ... particulates and the matrix melt The volume fraction of reinforcement is limited because the viscosity of the melt increases with particle incorporation and becomes non-Newtonian [3] As a result, the...
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EVALUATING THE EFFECT OFWEATHER CONDITIONS ON THE SOLAR FRACTION OF SOLAR ASSISTED HEATING SYSTEM ĐÁNH GIÁ ẢNH HƯỞNG của điều KIỆN THỜI TIẾT đến hệ số NĂNG LƯỢNG mặt TRỜI của hệ THỐNG NHIỆT NĂNG LƯỢNG mặt TRỜI
... developed to evaluate the effect of under real weather conditions at Jeju Island, South Korea on the solar fraction, as well as the contribution of total useful heat gain of solar collectors for ... the thermal performance of the solar assisted heating system for residential house, which is the amount of energy provided by the solar energy divided by the total energy is supplied by the solar ... instrument was installed on the collector surface of the solar assisted heating system for residential house Figure 1: Schematic diagram of the solar assisted heating system for residential house...
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Tài liệu Báo cáo Y học: The effects of low pH on the properties of protochlorophyllide oxidoreductase and the organization of prolamellar bodies of maize (Zea mays) pot
... (1993) The effect of cross-linking of the subunits of NADPH -protochlorophyllide oxidoreductase on the aggregational state of protochlorophyllide Photosynthetica 29, 205–218 Wiktorsson, B., Ryberg, ... The effect of the presence of the adenylates on the ability of POR-PChlide640 to undergo photoconversion was checked by comparing the efficiency of photoconversion of PLB samples containing excess ... isolate the contribution of the pH- driven conformational changes from the other effects, a parallel study was carried out on the low- pH induced blue shift in the PChlide absorption maximum of nonphotoconverted...
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Báo cáo " Influence of cooling rate on the properties of Fe73.5Si13.5B9Nb3Au1 ribbons " docx
... wheel, the longer path The increasing speed of the wheel make the thickness of ribbons thinner and the ratio between the area and volume of the ribbons that contact with the surface of the wheel ... that the wheel gets heat faster and more than from inside of the ribbon, so the ribbon is cooled faster Therefore, the speed of the wheel is proportional to the cooling rate It means that two concepts ... corresponds to the crystallization of α-Fe(Si) phase and the second one is related to the forming of boride phase (Fig 2) When increasing cooling rate, the first peak (Tp1) and the second one (Tp2)...
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effects of cultivating conditions on the mycelial growth
... ammonium salts were used as the nitrogen source, the pH decreased during the mycelium growth as the result of assimilation of the ammonium ion and the attendant effects of acids anions in the ... increased, corresponding to a higher dry mycelium concentration The formation of pellets is largely determined by the extent of agitation and aeration The effect of aeration on the growth of mushroom ... the oxygen supply to the interior of the pellets decreases because of the condensation of mycelium characteristics of the pellet structure and as a function of the pellet diameter Diffusion of...
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influence of DC magnetron sputtering parameters on the properties of amorphous indium zinc oxide thin film y s jung
... – – – – Amorphous Amorphous Amorphous Amorphous Amorphous Amorphous Amorphous Amorphous Amorphous Crystalline Amorphous Amorphous Amorphous Amorphous Y. S Jung et al / Thin Solid Films 445 (2003) ... using the gases of smaller mass such as He w35x Employing the explanation to this study, in the case of using Ne gas, which has smaller mass, sputtered species directed to the substrate lose less ... highest transmittance Conclusions In this work, amorphous or crystalline indium zinc oxide (IZO) thin films were deposited on glass or Si wafer substrates using DC magnetron sputtering technique The...
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