A. M. Abd-Alla^1,2,3, Mohamed I. A. Othman^1,4, S. M. Abo-Dahab^1,5

CMC-Computers, Materials & Continua, Vol.51, No.2, pp. 63-79, 2016, DOI:10.3970/cmc.2016.051.063

Abstract The aim of this paper is to study the reflection of plane harmonic waves from a semi-infinite elastic solid under the effect of magnetic field in a vacuum. The expressions for the reflection coefficients, which are the relations of the amplitudes of the reflected waves to the amplitude of the incident waves, are obtained. Similarly, the reflection coefficient ratio variations with the angle of incident under different conditions are shown graphically. Comparisons are made with the results predicted by the dual-phase-lag model and Lord-Shulman theory in the presence and absence of magnetic field. More >

ZichunYang¹, Gaohui Su^1,2, Bin Chen¹

CMC-Computers, Materials & Continua, Vol.51, No.1, pp. 43-62, 2016, DOI:10.3970/cmc.2016.051.043

Abstract The molecular dynamics (MD) simulations were used to understand the heat transfer process between the gas phase and the solid skeleton in the nanoporous silica aerogels. The amorphous silica nanoparticles were generated by the MD simulations and the energy accommodation coefficient (EAC) between the gases and the nanoparticles was calculated based on the results of the nonequilibrium molecular dynamics (NEMD) simulations. The apparent thermal conductivity (ATC) of the gases between the heat source and heat sink was also obtained. The effects of the temperature, the particle diameter and the molecule type on the EAC and… More >

Shifeng Xue^1,2, Xiuxing Zhu^1,2, Lin Zhang³, Shenghu Zhu⁴, Guigen Ye^1,5

CMC-Computers, Materials & Continua, Vol.51, No.1, pp. 21-42, 2016, DOI:10.3970/cmc.2016.051.021

Abstract A perforating hole is a channel through which the oil and gas in a reservoir pass into the production well bore. During the process of perforating due to explosion, the surrounding sandstone will be damaged to a certain extent, which will increase the well bore skin and lead to the decrease of production consequently. In this work a mechanical model of perforating damage is developed to describe the influences of perforating due to explosion on the porosity and permeability of the surrounding sandstone near the compaction zone. Based on this developed model, the important data… More >

Sen-Yung Lee¹, Shueei-Muh Lin^2,3, Kai-Ping Chang¹

CMC-Computers, Materials & Continua, Vol.51, No.1, pp. 1-19, 2016, DOI:10.3970/cmc.2016.051.001

Abstract The two coupled governing differential equations for the out-of-plane vibrations of non-uniform beams with variable curvature are derived via the Hamilton's principle. These equations are expressed in terms of flexural and torsional displacements simultaneously. In this study, the analytical method is proposed. Firstly, two physical parameters are introduced to simplify the analysis. One derives the explicit relations between the flexural and the torsional displacements which can also be used to reduce the difficulty in experimental measurements. Based on the relation, the two governing characteristic differential equations with variable coefficients can be uncoupled into a sixth-order More >

Daniel C. Parker¹, Jay Simhan^1,2

Canadian Journal of Urology, Vol.22, Suppl.5, pp. 88-92, 2015

Abstract instruction: Introduction: Lower urinary tract symptoms are a common complaint. Surgery to debulk hyperplastic prostate tissue is indicated for men with symptoms refractory to medical therapy, or for those who cannot tolerate first-line medications. In recent decades, new endoscopic techniques have been developed to reduce the morbidity of transurethral resection of the prostate (TURP). Nonetheless, complications are still frequently encountered in the immediate, early, and remote postoperative setting.
instruction: Materials and methods: In this review, we perform an in-depth examination of contemporary treatment strategies for long term complications of surgical outlet reduction procedures. Complications encountered in the… More >

Shiva Madhwan Nair, Marie Adrianne Pimentel, Peter J. Gilling

Canadian Journal of Urology, Vol.22, Suppl.5, pp. 82-87, 2015

Abstract instruction: Introduction: Lower urinary tract symptoms (LUTS) are common and are often caused by benign prostatic hyperplasia (BPH). Traditional surgical methods of open enucleation and transurethral resection of prostate (TURP) have been efficacious in alleviating these symptoms however, these are operator dependent and often come with significant side effects. In this review, we will discuss upcoming new surgical techniques in management of BPH.
instruction: Materials and methods: A systematic search of SCOPUS, MEDLINE, EMBASE and Cochrane databases were carried out using relevant key words.
instruction: Results: Intra-prostatic injections with a variety of agents have been explored as these… More >

Charles C. Peyton, Gopal H. Badlani

Canadian Journal of Urology, Vol.22, Suppl.5, pp. 75-81, 2015

Abstract instruction: Introduction: Elderly men with multiple comorbidities may be unfit to undergo surgical management of benign prostatic obstruction (BPO). Permanent and temporary prostatic stents have been developed as an alternative to chronic indwelling catheters in men unfit for surgery.
instruction: Materials and methods: Herein we review the past and present literature on the role and effectiveness of prostatic stents in the treatment of BPO.
instruction: Results: Permanent prostatic stents have largely been abandoned in North America due to unfavorable outcomes and improved technologies to allow for treatment of BPO. Currently, the temporary Spanner stent is the only available More >

Daniel B. Rukstalis

Canadian Journal of Urology, Vol.22, Suppl.5, pp. 67-74, 2015

Abstract instruction: Introduction: Benign prostatic hyperplasia (BPH) is an obligate disorder of the aging male prostate with close associations to other metabolic conditions of aging including obesity. Clinical manifestations of this chronic disorder increase as men age suggesting that a growing number of older men will require intervention for progressive voiding symptoms or bladder dysfunction.
instruction: Materials and methods: The Prostatic Urethral Lift (PUL) procedure represents a new endoscopic approach in which small permanent intraprostatic implants are positioned to correct bladder outlet obstruction without tissue destruction. An overview of the treatment modality, review of recent literature, and analysis… More >

Mark Ferretti, John Phillips

Canadian Journal of Urology, Vol.22, Suppl.5, pp. 60-66, 2015

Abstract instruction: Introduction: Prostatectomy for benign disease, also known as a 'simple prostatectomy', is neither simple in indication nor approach. In the post-Medical Therapy of Prostatic Symptoms (MTOPS), NCT00021814 trial era, the medical management of benign prostatic hyperplasia (BPH) and consequent bladder outlet obstruction (BOO) has shifted surgical intervention to those patients who are medical-non responders, present with advanced signs of BOO and obstructive uropathy, and those with prostate gland volumes beyond the size normally approachable with standard transurethral resection of the prostate (TURP). Simple prostatectomy through an open surgical approach is associated with improvements in BOO… More >

Lori B. Lerner, Archana Rajender

Canadian Journal of Urology, Vol.22, Suppl.5, pp. 53-59, 2015

Abstract instruction: Introduction: Laser treatment of benign prostatic hyperplasia (BPH) through enucleation techniques has become increasingly more utilized in the field of urology. Laser enucleation of the prostate (LEP) is a transurethral procedure that employs several different types of lasers to dissect the adenoma from the surgical capsule in a retrograde fashion.
instruction: Materials and methods: We review basic laser physics and current laser prostate enucleation techniques. Holmium-LEP (HoLEP), Thulium-LEP (ThuLEP), Greenlight-LEP (GreenLEP) and Diode-LEP (DiLEP) applications are discussed. We summarize the current literature with respect to functional outcomes and complications.
instruction: Results: Although each laser device used for… More >