Effect of Heat Treatment Conditions on the Properties of FePt Nanoparticles Produced by Sonochemistry

... 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 Th...

Ngày tải lên: 13/02/2014, 03:20

... 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 pre...

Ngày tải lên: 20/06/2014, 20:20

... 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 am...

Ngày tải lên: 05/09/2013, 14:58

... 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),...

Ngày tải lên: 16/03/2014, 15:31

... 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...

Ngày tải lên: 20/03/2014, 13:11

... 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) c...

Ngày tải lên: 28/03/2014, 10:20

... 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 c...

Ngày tải lên: 23/07/2014, 13:21

... 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 compositi...

Ngày tải lên: 07/08/2014, 14:20

... (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...

Ngày tải lên: 09/09/2015, 10:32

... 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...

Ngày tải lên: 05/10/2015, 19:04

... 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...

Ngày tải lên: 16/01/2016, 13:28

... (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 photoc...

Ngày tải lên: 22/02/2014, 04:20

... 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 proportiona...

Ngày tải lên: 05/03/2014, 14:20

... 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...

Ngày tải lên: 06/05/2014, 11:53

... – – – – 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 dire...

Ngày tải lên: 24/05/2014, 13:53