Báo cáo vật lý: "Effect of Filler Incorporation on the Fracture Toughness Properties of Denture Base Poly(Methyl Methacrylate)" pptx

... 10Effect of Filler Incorporation on the Fracture Toughness Properties 4. CONCLUSION The general behaviour of the tested materials showed that the dry samples provided higher values of fracture ... 6Effect of Filler Incorporation on the Fracture Toughness Properties Figure 1: Effect of filler content on the fracture toughness of the PMMA matrix containing 10 ... 3.2 The Effect of SBF Exposure on Fracture Toughness The mechanical properties of denture- base polymers could be affected by an aqueous environment in the long term.12 Figure 2 shows the...

Báo cáo vật lý: "Effect of Treated and Untreated Filler Loading on the Mechanical, Morphological, and Water Absorption Properties of Water Hyacinth FibersLow Density Polyethylene Composites" pdf

... The elongation break is further reduced to less than 50% as the filler concentration increased to 15 phr and 25 phr. When the percentage of filler loading was increased, the ductility of the ... fillers in polymer matrices.2–7 The addition of fillers into a polymer will affect the mechanical, thermal, and water absorbent properties of the composite. In addition, the properties of ... bonding was evident between the cellulose and the LDPE matrix. Therefore, the mechanical properties of the composites had improved. Elongation at break of the pure LDPE was higher than the...

Báo cáo vật lý: "EFFECT OF FIELD STRENGTH IN THE VELOCITY ANISOTROPY OF FERROFLUIDS" pptx

... al.23 concluded that at equilibrium, the magnitude of the magnetization is a function of the strength of external magnetic field, the volume concentration of the magnetic particles (their magnetic ... counteracts the orientation of the magnetic moments into the direction of the field. In a strong field, most of the particles become oriented and the magnetization of the sample attain saturated.22 ... Langevin law24 for the magnetization of molecules of a paramagnetic gas. The respective expression, in the case of magnetic fluids, is fulfilled on the assumption of the absence of magnetic or...

Báo cáo vật lý: "Effect of Temperature on Corrosion Behavior of AISI 304 Stainless Steel with Magnesium Carbonate Deposit" docx

... scales strongly depends on temperature, pH, the rate of CO2 release as well as the concentrations of carbonates ions.4 Several works have been reported5–6 on the studies of deposits on the ... affect the corrosion rate other than time exposure and ionic salts. The carbonate salt have a deleterious effect on the scales and rapid decomposition of the alloy is noted.7 4. CONCLUSION ... in the formation of Cr2O3, NiO or Fe2O3 scales.1–2 The molten carbonate are diffused to the electrolytic matrix, resulting the formation of porous NiO.3 The formation of...

Báo cáo vật lý: "Effect of Blowing Agent Concentration on Cell Morphology and Impact Properties of Natural Rubber Foam" ppt

... that the higher energy absorption of the lower relative density foams is a result of the larger deformation, the bending and buckling of the cell walls and edges.3 The differences in the absorbed ... be seen that as the blowing agent concentration increased, the value of the maximum torque (MH) decreased. MH represents the value of stiffness or the shear modulus of the fully vulcanised ... the measurement of the stiffness of the unvulcanised rubber at the lowest point of the cure curve.7 The results indicate that the blowing agent concentration did not affect the compound viscosity...

Báo cáo khoa học: Kininogen-derived peptides for investigating the putative vasoactive properties of human cathepsins K and L docx

... Michaelis constant for the substrate;S the chromogenic substrate (L-BAPA) concentration; I the N-BK peptide concentration and the Kivalue correspondsto the Michaelis constant for the N-BK ... sites were identiﬁed, one at the Gly384-Phe385 bond and the other at the Arg389-Ser390 bond,which is consistent with the unique ability of cathepsin Kamong mammalian cathepsins to accomodate ... components, which reduces the pH of the pericellular environment of macrophages [20]. This raises the question of the dual behaviour of kininogens complexedwith CP. While concentrations of cystatins C,...

Báo cáo hóa học: " Research Article A Note on the Relaxation-Time Limit of the Isothermal Euler Equations" pdf

... ProblemsReferences[1] J F. Coulombel and T. Goudon, The strong relaxation limit of the multidimensional isother-mal Euler equations,” Transactions of the American Mathematical Society, vol. 359, no. 2, ... 9Together with the inequalities (4.8)and(4.21), (4.2) follows immediately, which com-pletes the proof of Proposition 4.1.Proof of Theorem 1.1. In fact, Proposition 3.1 also holds on the framework ... equation as the limit of the isentropic Euler equations in one space dimension. Recently, Coulombel and Goudon[1] constructed the uniform smooth solutions to (1.1) in the multidimensional case...

Báo cáo toán học: "A new upper bound on the total domination number of a graph" pdf

... copy of X and, if N∗uv= ∅, the P1-component consisting of the degree-2 vertex in the copy of Z, are precisely the components of G[S] minus the path-component P and the P1-component consisting ... Furthermore, ∆(G) ≥ 3 as the link vertex in the copy of X hasdegree at least three. The components of G[S], other than the P2-component consisting of the two degree-2 vertices in the ... bounds on the total domination number The decision problem to determine the total domination number of a graph is known to beNP-complete. Hence it is of interest to determine upper bounds on the...

Báo cáo vật lý: "Emulsion Polymers of Core-Shell Styrene-Butyl Acrylate: The Effect of Feeding and Aging Time on Particle Size Distribution" pdf

... applications.5,6,7 A decade ago, research on the color effect of film crystals based on the theory of light reflection is originated from the work of Yablonovitch and John. Yablonovitch ... and Table 2 show the effect of aging time on the conversion of core-shell emulsion polymers. The results indicate that the conversion increases with aging time. An aging time of 30 min yielded ... results of the conversion and particle size to the ratio of the feeding time are given in Table 1. Table 1 shows that as the feeding time of the core and shell increases, so does conversion and...

Báo cáo vật lý: "Using of HPLC Analysis for Evaluation of Residual Monomer Content in Denture Base Material and Their Effect on Mechanical Properties" pptx

... monomer, and concluded that the percentage of higher levels of residual monomer effected on the tensile properties of denture base material. Table 2: Results of tensile properties of heat-cure ... the material of choice for denture base fabrication. The denture base resin is subjected to various stresses during function. During fabrication of a denture, the physical and mechanical properties ... environment, two processes were occured simultaneously. First, post-curing of the denture base and leaching of the residual monomer where both effects reduced the amount of monomer in the denture...

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