Báo cáo hóa học: " Preparation and properties of copper-oil-based nanofluids" ppt

... in Figure 2b, the bands of C-H and O- CH 2 are also observed in the surface-modified Cu nano- particles, while the absorption peaks of P = S and P-S shifts, and the bands of N-H mostly disappear. Figure ... additives in oils. Viscosities and thermal conductivities of nanofluids The effects of both temperature and mass fraction of the nanoparticles on the viscosities of...

Ngày tải lên: 21/06/2014, 03:20

... measurements and the analysis of the spectra and carried out the analysis of the water contact angles on nanoporous alumina. AK and CE participated in the design of the study and coordination of the ... reaction of HMDS with the alumina surface occurs by the dissociative che- misorption of HMDS via reaction of coordinatively unsaturated Al + and O-sites. Subsequent rea...

Ngày tải lên: 21/06/2014, 01:20

... HS15/propofol of 10/1/5 by weight, average micelle size of about 101 nm and PDI of 0.12 as shown in Figure 2. The LC of mixed micelles was about 32.4%, and the content of propofol in the preparation ... of propofol to mPEG-PLA and Solutol HS15, which allowed for the best propofol solubili- zation, a series of propofol-loaded mixed micelles was pre- pared with different w...

Ngày tải lên: 21/06/2014, 04:20

... manufacturing of carbon/water nanofluids. Introduction As industrial and technological products demand higher standards of function and capacity, the problem of heat dissipation from electrical ... viscos- ity of c arbon/wat er nanofluid is much higher than that of the water. When the carbon/wat er nanofluid was applied to heat exchange, pressure drop of pipeline and energy...

Ngày tải lên: 21/06/2014, 04:20

... the a rrangement of cations produces pairs of Figure 5 N 2 adsorption and desorption isotherms of Fe 3 O 4 NPs. Figure 6 Magnetic hysteresis loops of a-Fe 2 O 3 NPs (curve 1) and Fe 3 O 4 NPs ... thus  = M V ,andM = A s · S,wherer is the density of the sample; M, S and V are the mass, surface area and volume of one Fe 3 O 4 particle, respectively; A s is the BET surface a...

Ngày tải lên: 21/06/2014, 06:20

... the surface of Fe 3 O 4 nanoparticles, such as the ratio of water to surfactant (R), the amount of ammonia, and the amount of tetraethoxysi- lane, on the photoluminescence properties of MPQDs were studied. ... solutions and then dried in vacuum. Synthesis of Fe 3 O 4 Nanoparticles Fe 3 O 4 nanoparticles were synthesized as reported by Massart et al. [28]. A mixture of 5.40...

Ngày tải lên: 21/06/2014, 20:20

... (&) Á L. Deng Á G. Chen Key Laboratory of Biorheological Science and Technology, Ministry of Education, and Institute of Biochemistry and Biophysics, College of Bioengineering, Chongqing University, 400044 ... different surfaces, and the thick- ness of the MHA film and the protein monolayer was estimated to be 1.51 and 5.53 nm, respectively. The GI- XRD 2h degrees of...

Ngày tải lên: 22/06/2014, 00:20

... porphyrin nano- and micro-particles made up of J- and H-heteroaggregates to date [26]. The photocatalytic and photoelectronic properties of TiO 2 sensitized with this type of porphyrin nano- and micro-particles ... beams, which is one of the proofs that the pyramids consist of CoTPPS 4- and H 4 TAPP 6+ . Figure 1c, d shows the images of samples 2 and 3, respectively....

Ngày tải lên: 22/06/2014, 01:20

... the separation and recovery of these solid base mixed oxides from the reaction products are still difficult. So a large amount of separation energy and cost are consumed for the extra equipment and treatments ... magnetic behavior of Co–Al, Ni–Al, and Mg–Al hydrotalcites, as well as the mixed oxides obtained after calcination. Trujillano et al. [9] reported the magnetic properti...

Ngày tải lên: 22/06/2014, 01:20

... increment of 350 and 520% with the addition of 4 and 8 wt.% of CNF, respectively. The elongation at break, on the other hand, shows steep decrement with the amount of CNF. The effects of various ... Addition of CNFs significantly improves the thermal conductivity of EVA even at low loading (Fig. 5). The thermal conductivity shows an increment of 70 and 188% with incorpora...

Ngày tải lên: 22/06/2014, 01:20