[PDF] Top 20 Mat. Res. vol.17 suppl.1

... The organization of this event was held by the Federal University of Santa Catarina (UFSC), State University of Santa Catarina (UDESC), University of the Joinville Region (Univille) and[r] ... See full document

... TEM and SEM images (Figure 1) show the morphological structure of the MWCNTs (Figures 1a and c) and SWCNTs (Figures 1b and d) adsorbents. The SEM image in Figure 1a shows entanglement of MWCNTs and Figure 1b shows ... See full document

... The thermal evolution study for the NdTaO 4 sample was carried out to investigate the influence of the temperature on its crystallization behavior. Figure 1 presents XRD patterns obtained for samples calcined in ... See full document

... The MEV micrographies showed the sintering of the calcined samples from the glycine, while the MEV micrographies of the sample from urea showed globular grains with medium particle size relatively smaller than those ... See full document

... The starting material and the synthesized products were analyzed using X-ray diffraction (XRD), scanning electronic microscopy (SEM) and diffuse reflectance spectroscopy in the infrared Fourier transform (DRIFTS). The ... See full document

... Subsequently, the supernatant was centrifuged at 3500 rpm for 15 minutes and determined the final concentrations of the samples by UV-Vis Spectroscopy using an equipment model of varian CARY 300, at a wavelength of 276 ... See full document

... as C-S nanostructures. Figure 5 shows typical TEM images and histograms for the size distributions. CdSe nanocrystals presented a calculated average size of 2.9±0.4 nm, which is comparable to the dimension determined ... See full document

... The XRF analysis was performed on spectrometer for X-ray fluorescence - (WDS) model BOL - FRX - 030. The sample was prepared by fusion at a dilution of 1/10 and used as a flux, a mixture of lithium borate (Li 2 B ... See full document

... The electronic properties of single-walled carbon nanotubes (SWCNT) are quite distinct from MWCNT. The chirality associated to the carbon atoms arranged in a single wall allows metallic or semi metallic behavior, which ... See full document

... The blue polymeric films (25 µm) with and without pro-oxidant additive (PE OX and PE), respectively, were made by commercial grade of the high-density polyethylene (HDPE), and linear low-density polyethylene (LLDPE), ... See full document

... with polymers prepared by free radical polymerization. Furthermore, for the copolymers, the LCST is strongly influenced by the hydrophilicity/hydrophobicity balance. When a hydrophilic comonomer is added the LCST ... See full document

... DTG) has been an essential tool for modeling the pyrolysis kinetics, based on the principle that the reaction velocity depends on temperature (T), conversion ( α) and time (t). Several mathematical models have been ... See full document

... Population growth in urban areas with the resultant proximity of people’s homes has developed the need for greater privacy. Soundprooing became an essential feature for good neighboring; especially sound insulation of ... See full document

... The materials used in this study were the following: post-consumer HDPE, provided from various packaging of cleaning products; eucalyptus flour (EU) of the species Eucalyptus grandis from the southern state of Rio Grande ... See full document

... Most radars used for air-traffic control and air-defense systems operate in the microwave band (L, S, C, X and Ku bands); radars operating in the UHF, L, S and C bands are used to monitor the airspace over large ... See full document

... Figure 1, the ECAE processing (225 ± 12 HV) and the subsequent annealing treatment performed at 300 °C/1h (231 ± 10 HV) resulted in a slight increase of the hardness values when compared to the ST sample (221 ± 26 ... See full document

... Lubricating composites are used to increase the service life of machinery and equipment where oil and grease cannot be used. For example, metal matrix composites which contain solid lubricants for high temperature ... See full document

... Two cooling methods were evaluated: 1) cooling at room temperature in a desiccator and 2) cooling in an oven at a cooling rate of 1 °C/min. The products were weighed before and after washing and were ... See full document

... conversion of porous gypsum into porous HAp. As can be observed in the spectrum shown in Figure 5B, there is a change in the absorption bands after 8 hours reaction time, when the formation of bands for HAp can be ... See full document

... In order to optimize samples processing with SLS method, (optimizing microstructure, mechanical properties and surface characteristics of the scaffolds), some variables can be controlled: laser power, scan speed and spot ... See full document