S. S. Chen¹, Y. H. Liu^1,2, Z. Z. Cen¹

CMES-Computer Modeling in Engineering & Sciences, Vol.28, No.1, pp. 39-56, 2008, DOI:10.3970/cmes.2008.028.039

Abstract In most engineering applications, solutions derived from the lower-bound theorem of plastic limit analysis are particularly valuable because they provide a safe estimate of the load that will cause plastic collapse. A solution procedure based on the meshless local Petrov-Galerkin (MLPG) method is proposed for lower-bound limit analysis. This is the first work for lower-bound limit analysis by this meshless local weak form method. In the construction of trial functions, the natural neighbour interpolation (NNI) is employed to simplify the treatment of the essential boundary conditions. The discretized limit analysis problem is solved numerically with More >

B Radhika¹, S S P,a¹, C S Manohar^1,2

CMES-Computer Modeling in Engineering & Sciences, Vol.27, No.1&2, pp. 79-110, 2008, DOI:10.3970/cmes.2008.027.079

Abstract Reliability of nonlinear vibrating systems under stochastic excitations is investigated using a two-stage Monte Carlo simulation strategy. For systems with white noise excitation, the governing equations of motion are interpreted as a set of Ito stochastic differential equations. It is assumed that the probability distribution of the maximum in the steady state response belongs to the basin of attraction of one of the classical asymptotic extreme value distributions. The first stage of the solution strategy consists of selection of the form of the extreme value distribution based on hypothesis tests, and the next stage involves More >

Brevedan RE, MN Fioretti, SS Baioni, IR Palomo, H Laborde

Phyton-International Journal of Experimental Botany, Vol.76, pp. 153-167, 2007, DOI:10.32604/phyton.2007.76.153

Abstract A long-term study was conducted at different locations of Southwestern Buenos Aires to evaluate the effects of N fertilization at different growth stages of soybean on yield, plant nitrogen concentration and seed protein and oil concentrations. Yields were increased in six out of ten trials, and the response was highest with N fertilization at the beginning of grain development (R5). Different nitrogen sources were applied at seeding which gave higher yields and increased seed protein content than the non-fertilized, non-nodulated treatment. Urea was the most effective N source. More >

Jarad Martin¹, George Rodrigues², Shawn Malone³, Gerard Morton⁴, Holly Campbell⁵, Juanita Crook¹

Canadian Journal of Urology, Vol.13, Suppl.2, pp. 26-33, 2006

Abstract Background and purpose: Annual genitourinary radiation oncology meetings aim to assist in the dissemination of knowledge that may affect current practice. We aim to measure changes in practice approaches that have occurred while these meetings have been conducted.
Materials and methods: A previously published survey from 2002 was sent to all genitourinary radiation oncologists in Ontario. Six prostate cancer patient scenarios were used: three definitive (low risk, intermediate risk, high risk), and three post-operative (extracapsular extension, margin positive, slowly rising PSA). There were 21 responders from seven cancer centers.
Results: Using biological equivalent dose (BED), there is significant dose… More >

M. Perl¹, C. Levy ², V. Rallabhandy ²

CMES-Computer Modeling in Engineering & Sciences, Vol.11, No.1, pp. 37-48, 2006, DOI:10.3970/cmes.2006.011.037

Abstract The Bauschinger Effect (BE) impact on K_IN– the combined, Mode I, 3-D Stress Intensity Factor (SIF) distributions for arrays of radial, internal, surface cracks emanating from the bore of a fully or partially autofrettaged thick-walled cylinder is investigated. A in-depth comparison between the combined SIFs for a “realistic” - Bauschinger Effect Dependent Autofrettage (BEDA) and those for an “ideal” - Bauschinger Effect Independent Autofrettage (BEIA) is performed. The 3- D finite element (FE) analysis is performed employing the submodeling technique and singular elements along the crack front. Both autofrettage residual stress fields, BEDA and BEIA, are… More >

Hideyuki Akaza

Canadian Journal of Urology, Vol.12, Suppl.1, pp. 77-80, 2005

Abstract Two decades have passed since the concept of Maximal Androgen Blockade (MAB) was first applied to the clinical treatment of prostate cancer. The theory is that by cutting off the supply of androgen from the adrenal gland, androgen blockade of the prostate could be made more complete. However, to date the clinical benefit of MAB has failed to live up to the theoretically expected effect. Having said that, fundamental research and clinical trials in recent years do indicate that the benefit of MAB is not merely an illusion. More >

F. Dunet¹, Ch. Pfister¹, M. Deghmani², Y. Meunier², G. Demeilliers-Pfister², Ph. Grise¹

Canadian Journal of Urology, Vol.11, No.2, pp. 2200-2204, 2004

Abstract Objectives: Improvement of radical prostatectomy surgical technique remains an objective for urological practice. The aim of this study was to evaluate the potential benefit of intra and postoperative epidural versus general anesthesia alone.
Material and methods: The authors retrospectively analyzed 62 consecutive cases of patients who underwent radical retropubic prostatectomy over a 2-year period. The mean age was 65.5 years (51-75). Two groups were selected: group I = 19 patients, who received epidural anesthesia in association with general anesthesia and group II = 43 patients with general anesthesia alone. Both groups were similar for ASA score, Body… More >

Armen G Aprikian¹, Neil Fleshner², Adrian Langleben³, Jeffrey Hames⁴

Canadian Journal of Urology, Vol.10, No.5, pp. 1986-1994, 2003

Abstract Objectives: To provide context in oncology for the significance of the benefits and cost of combined androgen blockade (CAB) in the treatment of advanced prostate cancer.
Methods: Canadian drug costs for the survival benefit with CAB in advanced prostate cancer were compared with the costs of benefit with new treatments in advanced non-small-cell lung cancer (NSCLC), metastatic colorectal cancer, and metastatic breast cancer. Clinical toxicities were also compared.
Results: The survival benefit with CAB in advanced prostate cancer appears to be approximately 3 months. The survival benefit with the addition of vinorelbine to cisplatin for the treatment of… More >

R. Martinez¹, N. M. Ghoniem²

CMES-Computer Modeling in Engineering & Sciences, Vol.3, No.2, pp. 229-244, 2002, DOI:10.3970/cmes.2002.003.229

Abstract We focus here on the direct coupling of Dislocation Dynamics (DD) computer simulations with the Finite Element Method (FEM) to simulate plastic deformation of micro-scale structures, and investigate the influence of crystal surfaces on dislocation motion. A series of three-dimensional (3-d) DD simulations of BCC single crystals with a single shear loop in the (101)-[111] slip system are first presented. The purpose of these simulations is to explore the relationship between loop force distributions and the proximity of the loop to the crystal boundary. Traction boundary conditions on a single crystal model are satisfied through… More >