Ahmed Meskini, Mostafa Najam, Mustapha El Alami

FDMP-Fluid Dynamics & Materials Processing, Vol.7, No.1, pp. 97-110, 2011, DOI:10.3970/fdmp.2011.007.097

Abstract A numerical mixed convection investigation was carried out to study the enhancement of heat transfer in a square cavity with identical heated rectangular blocks adjacent to its upper wall, and submitted to a vertical jet of fresh air from below. The configuration so defined is an inverted "T"-shaped cavity presenting symmetry with respect to a vertical axis passing by the middle of the openings. The governing equations have been solved using the finite difference method. The parameters of this study are: Rayleigh number 10⁴ ≤ Ra ≤ 10⁶, Reynolds number 1 ≤ Re ≤ 1000, the opening More >

Hicham Rouijaa¹, Mustapha El Alami², El Alami Semma³, Mostafa Najam²

FDMP-Fluid Dynamics & Materials Processing, Vol.7, No.1, pp. 57-70, 2011, DOI:10.3970/fdmp.2011.007.057

Abstract This article presents a numerical study on natural convection in a bidimensional inclined "T"-shaped cavity. The governing equations are solved in the framework of a control-volume method resorting to the SIMPLEC algorithm (for the treatment of pressure-velocity coupling). Special emphasis is given to the investigation of the effect of inclination on the heat transfer and mass flow rate. Results are discussed for Prandtl number Pr=0.72, geometry with: opening width C=0.15, blocks gap D=0.5, blocks height, B=0.5 and different values of the Rayleigh number (10⁴ ≤ Ra ≤ 10⁶). More >

Richard Casey¹, Zsuzsanna Gesztesi¹, Joseph Rochford²

Canadian Journal of Urology, Vol.17, No.3, pp. 5170-5177, 2010

Abstract Objectives: To evaluate the effect of zoledronic acid on androgen deprivation therapy in patients with hormone-sensitive prostate cancer by measuring the percentage change in lumbar-spine bone mineral density (BMD) at 12 and 24 months.
Materials and methods: An open-label, multicenter, randomized, two-phase study was conducted in patients with hormone-sensitive prostate cancer (N = 200) receiving 10.8 mg goserelin acetate with or without zoledronic acid (4 mg intravenously) every 3 months. In phase I, patients were randomized to goserelin acetate alone or goserelin acetate plus zoledronic acid for 12 months. In phase II, patients receiving goserelin acetate plus… More >

Calin Popa^1,2, Pilar Barrera², Leo A. B. Joosten^1,2,3, Piet L. C. M. van Riel², Bart-Jan Kullberg^1,3, Jos W. M. van der Meer^1,3, Mihai G. Netea^1,3

European Cytokine Network, Vol.20, No.2, pp. 88-83, 2009, DOI:10.1684/ecn.2009.0150

Abstract Infectious complications are not rare in rheumatoid arthritis (RA), and the susceptibility to infec-tions is increased during treatment with TNF blocking agents. As a possible mechanism contributing to that, we assessed the modulation of cytokine production induced by TNF neutralization. Methods. Whole blood cultures from six healthy volunteers and 13 RA patients starting therapy with either adalimumab (n = 7) or etanercept (n = 6) were stimulated with heat-killed Salmonella typhimurium, Staphylococcus aureus or with S. typhimurium lipopolysaccharide (LPS). The production of interleukin (IL)-1β, IL-6, IL10, IL-17, TNF, IL-8 and IFN-γ was measured by specific immunoassays. Results. Stimulation … More >

Rama Bansil¹, Minghai Li¹, Yongsheng Liu¹

The International Conference on Computational & Experimental Engineering and Sciences, Vol.13, No.4, pp. 75-76, 2009, DOI:10.3970/icces.2009.013.075

Abstract Block copolymers are known to form micelles of different shapes in selective solvents that preferentially dissolve one of the constituent blocks. These micellar fluids exhibit various ordered and disordered phases. To gain microscopic insight into the mechanisms involved in the transformation between different phases we use synchrotron-based time-resolved small angle x-ray scattering (SAXS) and coarse-grained discrete Brownian Dynamics simulations. In this talk I will focus on the kinetics of the transformation from the hexagonal packed cylinder (HEX) phase to cubic phases (FCC or BCC). SAXS data was interpreted with a geometrical model for the transformation… More >

Dae-Hyun Park¹, Hyun-Hee Park², Yoon Kim¹

The International Conference on Computational & Experimental Engineering and Sciences, Vol.11, No.4, pp. 113-114, 2009, DOI:10.3970/icces.2009.011.113

Abstract In this paper, we propose a post-processing visual enhancement technique to reduce the blocking artifacts in block based DCT decoded image for mobile devices that has allocation of the restricted resource. This algorithm uses the adaptive deblocking filter to remove grid noise and ringing noise in monotone areas. To decide whether monotone region or not, we introduce a notion of Flatness. Also, a new directional filter is utilized to get rid of staircase noise and preserve the original edge component. The directional filter is applied according to the direction of edge, which is corrected in More >

Bhaskar Kumar¹, Sanjay Mittal^1,2

CMES-Computer Modeling in Engineering & Sciences, Vol.53, No.2, pp. 95-122, 2009, DOI:10.3970/cmes.2009.053.095

Abstract The steady flow past a circular cylinder is investigated. Symmetry conditions are imposed along the centerline of the flow field. The variation of the structure of the recirculation zone with the Reynolds number is studied. The effect of the location of lateral boundary on the flow is analyzed and compared with results from earlier studies. The eddy length varies linearly with Re. Three kinds of solutions, based on eddy structure, are found for different location of the lateral boundary. Global linear stability analysis has been carried out in a translating frame to determine the convective… More >

M. El Alami¹, E. A. Semma^2,3, M. Najam¹, R. Boutarfa²

FDMP-Fluid Dynamics & Materials Processing, Vol.5, No.1, pp. 23-36, 2009, DOI:10.3970/fdmp.2009.005.023

Abstract This study is devoted to the investigation of natural convection in a two dimensional horizontal channel with rectangular heated blocks at the bottom. The aspect ratio of the channel is A = L'/H' = 5. The blocks are heated with a constant temperature while the upper plane of the channel is cold. The governing equations are solved using a finite volumes method and the SIMPLEC algorithm is used for the treatment of the pressure-velocity coupling. Special emphasis is given to detail the effect of the Rayleigh number and blocks height on the heat transfer and the More >

Jack Barkin

Canadian Journal of Urology, Vol.15, Suppl.4, pp. 21-30, 2008

Abstract Benign prostatic hyperplasia (BPH) is one of the commonest causes of lower urinary tract symptoms (LUTS) in men over age 50. Fifty percent of men over age 50 will require some type of management for BPH/LUTS symptoms. Until about 15 years ago, the most common management for BPH was a transurethral resection of the prostate (TURP) operation. Initially, once a diagnosis of BPH has been made, most men are treated medically. One must fi rst rule out other serious causes of these symptoms, such as prostate cancer, bladder cancer, and other obstructions. For men with… More >

Jack Barkin

Canadian Journal of Urology, Vol.15, No.6, pp. 4353-4358, 2008

Abstract Symptomatic benign prostatic hyperplasia (BPH) is one of the commonest causes of men presenting with lower urinary tract symptoms (LUTS). We can fi nd this in 50% of men over the age of fi fty. If BPH is not treated, then one can expect that the disease will progress in a signifi cant number of individuals. What we need to do is try to predict, based on certain baseline parameters such as International Prostate Score (IPSS), prostate volume, prostate-specifi c antigen (PSA) and the degree of bother, those men to whom we should offer therapy. More >