L. Susmel^1,2, D. Taylor², R. Tovo¹

The International Conference on Computational & Experimental Engineering and Sciences, Vol.1, No.2, pp. 81-86, 2007, DOI:10.3970/icces.2007.001.081

Abstract This paper investigates some practical aspects related to the use of the Theory of Critical Distances (TCD) when employed to estimate notch fatigue limits. The accuracy of different formalisations of the theory was checked by using experimental data taken from the literature. This exercise allowed us to confirm that the simplest formalisation of the TCD, in which both critical distance and critical stress are material constants [1], is also the most accurate one, giving predictions falling within an error interval of about ±20%. The TCD is also accurate when applied to notches having large opening More >

T. Tanaka¹

The International Conference on Computational & Experimental Engineering and Sciences, Vol.4, No.4, pp. 251-256, 2007, DOI:10.3970/icces.2007.004.251

Abstract The viscoplastic constitutive relations with kinematic strain hardening-softening model for geomaterials are developed. The constitutive models include strain-rate dependent properties based on the thoery by Duvaut-Lions. The dynamic relaxation method for static problems and the dynamic analysis for earthquake responses are applied to boundary value problems using finite element methods. More >

S.Y. Wang^1,2, K.M. Lim^2,3, B.C. Khoo^2,3, M.Y. Wang⁴

CMES-Computer Modeling in Engineering & Sciences, Vol.21, No.1, pp. 1-40, 2007, DOI:10.3970/cmes.2007.021.001

Abstract The level set method is a numerical technique for simulating moving interfaces. In this paper, an unconditionally BIBO (Bounded-Input-Bounded-Output) time-stable consistent meshfree level set method is proposed and applied as a more effective approach to simultaneous shape and topology optimization. In the present level set method, the meshfree infinitely smooth inverse multiquadric Radial Basis Functions (RBFs) are employed to discretize the implicit level set function. A high level of smoothness of the level set function and accuracy of the solution to the Hamilton-Jacobi partial differential equation (PDE) can be achieved. The resulting dynamic system of… More >

Shuji Takashima¹, Michihiko Nakagaki², Noriyuki Miyazaki¹

CMES-Computer Modeling in Engineering & Sciences, Vol.20, No.3, pp. 193-202, 2007, DOI:10.3970/cmes.2007.020.193

Abstract Composite materials have complicated microstructures. These microstructures affect the macroscopic deformation of composite materials. In the present study, we focus on the effect of particle size in a particle-dispersed composite material on the mechanical strength of the material. For this purpose, we derived a macroscopic elastic-plastic constitutive equation using a modified version of the Eshelby's equivalent inclusion method combined with the gradient plasticity. We incorporated this macroscopic elastic-plastic constitutive equation into a finite element program and performed a homogenized finite element analysis of a particle-dispersed composite material in which both the macroscopic and microscopic behaviors More >

PABLO R. MARTÍN*, CLAUDIO G. DE FRANCESCO**

BIOCELL, Vol.30, Suppl.S, pp. 337-343, 2006

Abstract This article has no abstract. More >

LETTY MARCANO, INGRID CARRUYO, YUSMARY FERNÁNDEZ, XIOMARA MONTIEL, ZAIDA TORREALBA.

BIOCELL, Vol.30, No.2, pp. 259-267, 2006, DOI:10.32604/biocell.2006.30.259

Abstract The vanadium is a metal that presents great interest from the toxicological point of view, because of the numerous alterations that can take place in different biological systems. This work evaluated the capacity of vanadium accumulation and its correlation with genotoxic effects in root cells of Allium cepa L. The bulbs were cultivated in renovated filtered water each 24 h, at a temperature of 25 ± 0.5°C, in darkness and constant aeration. Treatments were carried out under the same experimental conditions, using water solutions of vanadium of 25, 50, 75 and 100μg/g for 0, 12, 24,… More >

Hernández-Castillo¹ FD, Adalberto Aguirre-Aguirre¹, RH Lira-Saldivar², E Guerrero-Rodríguez¹, G Gallegos-Morales¹

Phyton-International Journal of Experimental Botany, Vol.75, pp. 91-101, 2006, DOI:10.32604/phyton.2006.75.091

Abstract The biological efficiency of five stocks of Bacillus subtilis, of the mixture of the bioproducts quitosan and Larrea tridentata extract, and five synthetic fungicides were evaluated against the fungus Alternaria dauci Kühn in laboratory and greenhouse experiments. The effect of these compounds on growth and yield of carrot was also determined. Stocks of the bacteria Bacillus (B3, B9, B15 and a combination of these) and the mixture quitosan- Larrea stimulated carrot development because it reached greater width, length and weight in comparison to the control and the other treatments. Stock B3 was the best in promoting carrot growth More >

Lutz EE, HD Merchán, AE Morant^*

Phyton-International Journal of Experimental Botany, Vol.75, pp. 85-89, 2006, DOI:10.32604/phyton.2006.75.085

Abstract Management of a double purpose wheat is not easy. Therefore, a simpler management alternative was studied: the mixture of two wheat varieties, one of long- cycle and the other one of short-cycle. Research was effected in the experimental field of the Asociación of Cooperativas Argentinas (38º 36´S, 61º 58´O and 122 m asl), 15 Km SW of Cabildo (Bs. As), in the semi-arid wheat subregion V S. At this place, forage and grain production of a suitable double-purpose wheat (ProINTA Pincén) was compared to its mixture with a short-cycle variety (Cooperación Calquín), either in the More >

W-J. Li³, Y-J. Jiang³, C. J. Galbán¹, K. W. Fishbein², S. A. Maher³, R. G. Spencer², R. S. Tuan³

Molecular & Cellular Biomechanics, Vol.3, No.4, pp. 175-176, 2006, DOI:10.32604/mcb.2006.003.175

Abstract This article has no abstract. More >

A-J. Wang¹, Q. Ao^{1, 2}, K. Gong¹, Z-H. Zheng¹, G-Y. Lu¹, G. Wang¹, Q. He¹, L-J. Kong¹, Y-D. Gong¹, N-M. Zhao¹, X-F. Zhang¹

Molecular & Cellular Biomechanics, Vol.3, No.4, pp. 143-144, 2006, DOI:10.32604/mcb.2006.003.143

Abstract This article has no abstract. More >