Materials Literature
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The elastic constants of DO 3 -Mg 3 RE (RE = Sc, Y, La, Ce and Lu) have been calculated at T = 0 K by applying the projector augmented wave (PAW) method within the generalized gradient approximation (GGA). The polycrystalline shear modulus, Young's modulus, Poisson's ratio and the anisotropic ratio of DO 3 -Mg 3 RE ar…
Self-complementary synthetic peptides, composed by 8 and 16 residues, were analyzed by CD, NMR and small angle neutron scattering (SANS) techniques in order to investigate the relevance of charge and hydrophobic interactions in determining their self-assembling properties. All the sequences are potentially able to for…
The influence of extrusion processing temperature profiles on the mechanical properties of oil palm empty fruit bunch-filled poly(vinyl chloride) extrudates was investigated. Only the poly(vinyl chloride) (PVC), acrylic and chlorinated polyethylene extrudates filled with 10 phr oil palm empty fruit bunch (OPEFB) were…
La vulcanitzacio per microones es un proces madur i no hi ha dubte sobre la seva eficiencia per produir articles de cautxu d'alta qualitat. Les microones son conegudes no nomes per la seva capacitat d'accelerar els processos i augmentar la eficiencia de la transferencia energetica, sino que tambe son capaces en certs…
The natural uniaxial fabric from the bark of the tree Polyalthia cerasoide was extracted. The fabric was treated with 5% aqueous NaOH solution. The primary thermograms of both untreated and the alkali treated fabrics were recorded in an inert atmosphere at a heating rate of 10°C/min. Using these thermograms, the initi…
Short-term flexural creep and stress relaxation tests were conducted on a wood plastic composite containing 30% high density polyethylene (HDPE), 67% fir wood flour, 2% compatibilizer (MAPE), and 1% lubricant. In creep tests, applied stress levels ranged from 30 to 60% of measured flexural strength. The principle of t…
Fluxes with a wide stability range of trigonal DyFe 3 (BO 3 ) 4 were selected by the successive-approximation method using direct phase probing in the Bi 2 Mo 3 O 12 -B 2 O 3 -Dy 2 O 3 -Fe 2 O 3 system. Crystallization parameters of the fluxes were determined. The conditions for single-crystal growth were recommended…
It is well known that humidity can deleteriously affect composite mechanical properties. In the present study the tensile properties of hybrid jute/cotton and sisal/cotton fabrics— polyester matrix composites were analyzed as a function of fiber content, immersion time in distilled water and of fabric drying just prio…
In this investigation, coatings of fly ash (an industrial waste) mixed with illmenite (a low grade ore mineral) have been deposited on mild steel and copper substrates using conventional atmospheric plasma spray technique. Micro-hardness measurement, phase composition analysis, coating porosity measurement, and surfac…
The novel phase field model with the "polymer characteristic" was established based on a nonconserved spatiotemporal Ginzburg-Landau equation (TDGL model A). Especially, we relate the diffusion equation with the crystal growth faces of polymer single crystals. Namely, the diffusion equations are discretized according…
Carboxylation of cotton linters was investigated relative to its use in ion exchange. The effects of different treatments of cotton linters, such as alkali, acid, and activating agents, e.g. LiCl, on the molecular structure and carboxylation of cotton linters were taken in our consideration. The absence or presence of…
The effect of MAPE as compatibilizer on mechanical and morphological properties of a wheat straw/high density polyethylene composite was investigated. Tensile strength, tensile modulus, tensile energy absorption, failure strain, and notched Izod toughness were much higher for composites with compatibilizer as compared…
Abstract The ultrasonic attenuation in thulium monochalcogenides TmX (X=S, Se and Te) has been studied theoretically with a modified Mason’s approach in the temperature and range 100 K to 300 K along 〈100〉, 〈110〉 〈111〉 crystallographic directions. The thulium monochalcogenides have attracted a lot of interest due to t…
We present an extensive analysis of the proposed relationship [T. Scopigno et al., Science 302, 849 (2003)] between the fragility of glass-forming liquids and the nonergodicity factor as measured by inelastic x-ray scattering. We test the robustness of the correlation through the investigation of the relative change u…
Various nanostructures (nanorods, nanowires, nanotubes, nanospheres) of Gdo.96Eu0.04(OH)3have been prepared by hydrothermal reactions at dif伍rent pHs and temperatures.The aspect ratios of one-dimensional nanostructures are strongly dependent on the solution pH.Subsequent dehydrations of these hydroxides at higher than…
Flax fibre reinforced polypropylene composites were fabricated using a high speed mixer followed by injection moulding. Prior to composite production, the fibre was modified by acetylation in the presence of perchloric acid. The effect of acetylation of the fibre was assessed on the basis of moisture resistance and di…
Magnetic phase transition in the manganite films has been found to be induced by the structural phase transition of the ${\text{SrTiO}}_{3}$ substrate at ${T}_{s}=105\text{ }\text{K}$ [Vlasko-Vlasov et al., Phys. Rev. Lett. 84, 2239 (2000) and Ziese et al., New J. Phys. 10, 063024 (2008)]. However, no change in the el…
The collective behavior of correlated electrons in the VO2 interface layer of the LaVO(3)/SrTiO(3) heterostructure is studied within a quarter-filled t(2g)-orbital Hubbard model on a square lattice. We argue that the ground state is ferromagnetic, driven by the double-exchange mechanism, and is orbitally and charge or…
The link between the rheology of 3D aqueous foam and the adhesion of neighboring bubbles is tested by confronting experiments at two different length scales. On the one hand, the dynamics of adhesion are probed by measuring how the shape of two bubbles in contact changes as their center-to-center distance is modulated…
Slow conductance relaxations are observable in many condensed-matter systems. These are sometimes described as manifestations of a glassy phase. The underlying mechanisms responsible for the slow dynamics are often due to structural changes which modify the potential landscape experienced by the charge carriers and th…