[PDF] Top 20 Mat. Res. vol.11 número3

... And the good news is: Materials Research has been accepted by Thomson Reuters for the following products beginning with volume 11(1) 2008: Science Citation Index-Expanded (SCIE) including the Web of Science, ISI ... See full document

... Study of the Magnetic and Microwave Absorber Properties of Z-Type Barium Hexaferrite Obtained by Citrate Precursor Method. Rio de Janeiro: Universidade Federal do Rio de Janeiro; 2004[r] ... See full document

... temperature of the pure asphalt binder (CAP), linear- (ML) and radial- (MR) SBS PMB and linear-SBS PMB samples with shale (ML2X, ML4X) and aromatic (ML2AO) oils... The linear-SBS PMB [r] ... See full document

... Lignocellulosic natural fibers from pine wood residues (PWR) (Pinus taeda), macadamia nutshell (MNS) (Macadamia integrifolia), dried coconut shell endocarp (CS) (Cocus nucifera), unripe coconut mesocarp (UCM) (Cocus ... See full document

... For surface area, pore size, and chemical characterization of babassu coconut shell activated carbon, it was used the N 2 adsorption technique at 77 K, zero point charge (ZPC), FTIR..[r] ... See full document

... All results are positive, indicating that the higher the values of the variables (tem- perature, activation time and flow rate) the higher the specific surface area of the resulting ac[r] ... See full document

... Conversion curve of ammonia in function of the temperature on the 5% Ru/CNF () and 5% Ru/CNT catalyst ()... in several catalytic reactions. The high catalytic performances of [r] ... See full document

... Therefore, the analysis focused on the FTIR spectra of the cured samples with different carbon nanotubes concentrations, where the influence of the SWCNTs (and acetone) in the curing [r] ... See full document

... We developed a complex (amplitude and phase) modulation Diffractive Optical Element (DOE) with four phase levels, which is based in a glass substrate coated with DLC (Diamond Like Carbo[r] ... See full document

... In this work, the effect of temperature variation on the magneti- zation curves was measured for Ba 3 Co 1.3 Zn 0.3 Cu 0.4 Fe 24 O 41 hexaferrite nanometric powder synthesized by the c[r] ... See full document

... The molecular structural mechanics approach was employed to exam the effect of wall thickness, diameter and chirality’s effect on SWNT stiffness.. The results suggested that stiffness [r] ... See full document

... The catalytic effect of the sodium (Na) observed both for the CO 2 reactivity and for air reactivity can cause, in addition to the deterioration of the carbon [r] ... See full document

... Regression analysis of microhardness averages of the Fill Magic Flow ® material to cured-irradiated groups in accordance with radiation dose as a function of the photo-activation time[r] ... See full document

... Figure 10 also presents a zoom of the flow-front in the 0.08 to 0.10 m region (filling time ≈ 2 seconds). It may again be observed that the numerical solution adequately represents the resin flow-front, whereas the ... See full document

... Although the mechanism of this reaction is not clear, the results suggested that the presence of manganese in the perovskite structure plays an important role in the catalytic activity[r] ... See full document

... Figure 6 shows the reflectivity curves for the nonwoven sub- strates of PET. The analysis of this figure shows that the behavior of the materials change, which evidences that structures II and III present better results, ... See full document

... A region of the surface of FeCrY alloy specimen under the Al paint is shown in Figure 11a. EDS analysis of this region, shown in Figure 11b, indicated the whitened region to be an oxid[r] ... See full document

... The Vickers microhardness test is based on the ability of the surface of any material to resist the penetration of a specific tip with a given load for a specific time. In our study, the surface hardness of the G1 and G3 ... See full document

... The mechanical and handling properties of dental composite res- ins depend on the concentration and particle size of the fillers. Proper finishing and polishing procedures are important to enhance the lon- gevity ... See full document

... Friction materials made by powder metallurgy present a metallic matrix, which reflects in higher resistance to heat and good resist- ance to wear 5.. Bronze is generally used as the bas[r] ... See full document