Miaoxia Xie¹, Yueming Li¹, Hualing Chen^1,2

CMES-Computer Modeling in Engineering & Sciences, Vol.85, No.1, pp. 65-78, 2012, DOI:10.3970/cmes.2012.085.065

Abstract Energy finite element method(EFEM) is a promising method to solve high-frequency vibro-acoustic problem. Energy boundary element method (EBEM) is an effective way to compute high-frequency sound radiation in the unbounded medium. Vibro-acoustic coupling of cavity structure in anechoic chamber includes both the interior acoustic field and unbounded exterior acoustic field. In order to predict this kind of high-frequency vibro-acoustic coupling problem in anechoic chamber, an approach combined EFEM and EBEM is developed in this paper. As a numerical example, the approach is applied to solve the high-frequency vibro-acoustic coupling response of a cubic cavity structure More >

Mirassón HR¹, IR Palomo², RE Brevedan², MN Fioretti²

Phyton-International Journal of Experimental Botany, Vol.80, pp. 147-151, 2011, DOI:10.32604/phyton.2011.80.147

Abstract Safflower production is mainly concentrated in northwestern Argentina although the most suitable area for its production is the central, Semiarid Pampean Region. The response of different varieties able to produce high sustainable yields was studied under different environments, with the idea of promoting these varieties in the study region. Six variety trials were carried out at two locations in the study area, Santa Rosa (La Pampa, 36° 39’ S, 64° 16’ W) and Tres Picos (Buenos Aires, 38° 16’ S, 62° 13’ W), during several years. Relative yield was used as a measure of safflower More >

ZHAO Jun-hai, HU Yong, Wang Fang, HOU De-yong

The International Conference on Computational & Experimental Engineering and Sciences, Vol.19, No.2, pp. 51-52, 2011, DOI:10.3970/icces.2011.019.051

Abstract With the number of submarines increasing rapidly, there are many accidents occurred during submarines’s cruising. Especially the universal attentions to submarine rescue are awaken by the Russian Navy’s second-generation strategic nuclear submarine "Kursk" accident.
One of the important means for submarine rescue is SRC. Since 70th last century abroad, Navy’s submarine rescue armies have been equipped with the SRCs. Entering 21th-century, it is necessary for mating exercises between SRC and disabled submarine(DISSUB) chosen still by Navy’s submarine rescue armies in Navy’s large military drills at home and abroad. The dedicated mating platforms for the SRCs… More >

W. A. El-Askary^1,2, S. A. Wilson², A. Hegab²

CMES-Computer Modeling in Engineering & Sciences, Vol.76, No.3&4, pp. 235-266, 2011, DOI:10.3970/cmes.2011.076.235

Abstract In the present work, a complete simulation of reactive flow in the combustion chamber of a rocket motor equipped with convergent-divergent nozzle has been introduced. The model describes the combustion process inside the combustion chamber considering a steady premixed reactant gas injected through side porous walls of the combustion chamber. The products flow through a convergent-divergent nozzle with adiabatic impermeable walls. The reactants are treated as two-dimensional, multi-components, turbulent compressible flow. The local properties of the mixture are calculated and updated during the solution process. At the boundary of the combustion chamber, a constant mass More >

W.A. El-Askary^1,2, A. Balabel², S.M. El-Behery², A. Hegab³

CMES-Computer Modeling in Engineering & Sciences, Vol.82, No.1, pp. 29-54, 2011, DOI:10.32604/cmes.2011.082.029

Abstract In the present paper, the characteristics of compressible turbulent flow in a porous channels subjected to either symmetric or asymmetric mass injection are numerically predicted. A numerical computer-program including different turbulence models has been developed by the present authors to investigate the considered flow. The numerical method is based on the control volume approach to solve the governing Reynolds-Averaged Navier-Stokes (RANS) equations. Turbulence modeling plays a significant role here, in light of the complex flow generated, so several popular engineering turbulence models with good track records are evaluated, including five different turbulence models. Numerical results… More >

J.A. Ferreira^2,3, P. de Oliveira², P. Silva⁴, J.N. Murta⁵

CMES-Computer Modeling in Engineering & Sciences, Vol.71, No.1, pp. 1-14, 2011, DOI:10.3970/cmes.2011.071.001

Abstract Mathematical models to describe drug concentration profiles of topically administered drug in the anterior chamber aqueous humor have been proposed by several authors. The aim of this paper is to present a mathematical model to predict the drug concentration in the anterior chamber when a therapeutical contact lens with the drug entrapped in nanoparticles is used. More >

CHRIS VORSTER, ANNIE JOUBERT

BIOCELL, Vol.34, No.2, pp. 71-80, 2010, DOI:10.32604/biocell.2010.34.071

Abstract In the search for new and improved anticancer therapies, researchers have identified several potentially useful compounds. One of these agents is 2-methoxyestradiol-bis-sulphamate (2ME-BM), a sulphamoylated derivative of 2-methoxyestradiol. The objective of this study was to evaluate 2ME-BM’s in vitro efficacy as antiproliferative agent in the MCF-7 breast adenocarcinoma cell line. Light- and fluorescent microscopy showed decreased cell density, increased apoptotic characteristics and significant ultrastructural aberrations indicative of autophagic cell death after 24 hours of exposure at a concentration of 0.4μM. In addition, mitotic indices revealed that 2ME-BM induces a G₂M block. The latter was confirmed by flow More >

Yuta Kitamura¹, Noriyuki Miyazaki¹, Takahito Kumazaki², Naoto Nagakura³, Yasuhiro Hashimoto³, Isao Masada³

CMES-Computer Modeling in Engineering & Sciences, Vol.68, No.2, pp. 151-166, 2010, DOI:10.3970/cmes.2010.068.151

Abstract CaF₂ single crystal is used as high performance optical elements. We developed an analysis system for simulating birefringence of CaF₂ single crystal used as a chamber window of a gas laser light source. The analysis system consists of a stress analysis and a birefringence analysis. In the stress analysis, the finite element method was applied to obtain the mechanical stress caused by a window holder and gas pressure. In the birefringence analysis, the photo-elastic effect gives the change of refractive indices, from which the optical path difference and the fast axis are calculated by using the More >

Yunhua Li^1,2, Yunze Li³, Chieh-Li Chen⁴, Cha’o-Kuang Chen⁵

CMES-Computer Modeling in Engineering & Sciences, Vol.58, No.1, pp. 1-14, 2010, DOI:10.3970/cmes.2010.058.001

Abstract Addressing the identification problem of the general Lagrange multiplier in the He's variational iteration method, this paper proposes a new kind of method based on Duhamel's principle for the dynamic system response analysis. In this method, we have constructed an analytical iteration formula in terms of the convolution for the residual error at the nth iteration, and have given a new interpretation to He's variational iteration method. The analysis illustrates that the computational result of this method is equal to that of He's variational iteration method on the assumption of considering the impulse response of More >

ANDREA P. RODRIGUEZ, HIDETSUGU TSUJIGIWA, MEHMET GUNDUZ, BEYHAN CENGIZ, NORIYUKI NAGAI, RYO TAMAMURA, SILVIA S. BORKOSKY, TOHRU TAKAGI, MIHO INOUE, HITOSHI NAGATSUKA*

BIOCELL, Vol.33, No.1, pp. 39-47, 2009, DOI:10.32604/biocell.2009.33.039

Abstract Progenitor cells play an important biological role in tooth and bone formation, and previous analyses during bone and dentine induction have indicated that they may be a good alternative for tissue engineering. Thus, to clarify the influence of the microenvironment on protein and gene expression, MDPC23 cells (mouse dental papilla cell line) and KUSA/A1 cells (bone marrow stromal cell line) were used, both in vitro cell culture and in intra-abdominal diffusion chambers implanted in 4-week-old male immunodefficient mice (SCID mice). Our results indicate that KUSA/A1 cells differentiated into osteoblast-like cells and induced bone tissue inside the More >