Oleg Shapiro¹, Thomas R. Welch², Maryellen Sheridan¹, Susan Stred², Jyoti Upadhyay¹

Canadian Journal of Urology, Vol.14, No.6, pp. 3767-3769, 2007

Abstract Objective: We present a child with Denys-Drash syndrome recognized after surgery for mixed gonadal dysgenesis, and discuss screening procedures the urologist should consider in similar circumstances.
Case report: A 1-year-old child with XY gonadal dysgenesis underwent genital reconstruction. The postoperative period was complicated by incisional drainage, which led to the recognition of a nephrotic syndrome. Molecular analysis of the WT-1 gene confirmed a mutation associated with the Denys-Drash syndrome.
Conclusion: The Denys-Drash syndrome should be suspected in children with XY gonadal dysgenesis. The presence of urine protein should be sought in such children, and if present, consultation More >

Paolo Pierini and Emanuele Baldassarre

Canadian Journal of Urology, Vol.14, No.6, pp. 3726-3726, 2007

Abstract This article has no abstract. More >

Aleš Belšak¹, Jurij Prezelj²

Structural Durability & Health Monitoring, Vol.3, No.4, pp. 239-246, 2007, DOI:10.3970/sdhm.2007.003.239

Abstract Noise source vizualization represents an important tool in the field of technical acoustics. There are many different techniques of noise source visualization. Most of them, however, are intended for a specific noise source in a specific type of acoustic environment. Consequently, a certain visualization method can be used only for certain types of noise sources in a specific acoustic environment and in a restricted frequency area. This paper presents a new visualization method of complex noise sources on the basis of the use of an acoustic camera. A new algorithm has been used, which makes More >

Ralf G. Cuntze¹

Structural Durability & Health Monitoring, Vol.3, No.2, pp. 87-106, 2007, DOI:10.3970/sdhm.2007.003.087

Abstract The paper deals with the application of phenomenological, invariant-based strength conditions (fracture failure) and their interrelationships. The conditions have been generated and are just applied here for a variety of materials. These might possess a dense or a porous consistency, and belong to brittle and ductile behaving isotropic materials, brittle unidirectional laminae and brittle woven fabrics. The derivation of the conditions was based on the author's so-called Failure Mode Concept (FMC) which basically builds up on the hypotheses of Beltrami and Mohr-Coulomb.
Essential topics of the paper are: 'global fitting' versus 'failure mode fitting', a short… More >

M. Kumosa¹

Structural Durability & Health Monitoring, Vol.3, No.1, pp. 35-50, 2007, DOI:10.3970/sdhm.2007.003.035

Abstract This paper deals with the structural integrity and durability of suspension composite (non-ceramic, polymer) insulators widely used in power transmission systems around the world. Under certain conditions, the insulators can fail in-service both electrically and mechanically resulting in the drop of energized transmission lines and power outages. In this work, predominantly mechanical failures of the insulators are discussed. In particular, the most important characteristics of a catastrophic failure process called brittle fracture are described. Subsequently, two examples of insulator failures by brittle fracture are shown and their causes explained. Finally, several recommendations on how to More >

C.P. Providakis¹

Structural Durability & Health Monitoring, Vol.3, No.1, pp. 29-34, 2007, DOI:10.3970/sdhm.2007.003.029

Abstract Actuators are structures that give micro-electro-mechanical systems (MEMS) the ability to interact with their environment rather than just passively sensing it. Recent studies of MEMS thermal micro-actuators have shown that simple in design and production devices can provide deflection of the order of 10 μm at low voltages. Recently, metals and single-crystal silicon materials were included in the range of materials used for thermal actuators since they operate at lower temperatures than the commonly used (poly)silicon devices. These actuators are liable to meet the loads in service, so the corresponding integrity and stability analysis constitutes a… More >

C. Bisagni¹

The International Conference on Computational & Experimental Engineering and Sciences, Vol.1, No.3, pp. 93-98, 2007, DOI:10.3970/icces.2007.001.093

Abstract The research here presented shows the numerical results for progressive failure of stiffened composite panels into the post-buckling field. In particular, a strength reduction procedure is implemented in the commercial finite element code ABAQUS where the stiffness properties of the material are removed in the failed areas. The results show a good correlation with experimental data obtained from a post-buckling test of a stiffened panel with a notch, that can be found in literature. More >

Joseph L. Chin, Jonathan I. Izawa

Canadian Journal of Urology, Vol.13, Suppl.2, pp. 48-51, 2006

Abstract Radiotherapy, both external beam and more recently, interstitial, have been therapeutic options for localized prostate cancer. Management of patients who have failed of local radiotherapy remains a challenge. Herein the current therapeutic options are reviewed. More >

Laurence H. Klotz

Canadian Journal of Urology, Vol.13, Suppl.2, pp. 43-47, 2006

Abstract Uncertainty exists for clinicians and patients with respect to choosing the optimal therapy for patients with PSA recurrence. There is no consensus as to what the PSA cutpoint should be to define PSA failure after radical prostatectomy (RP) or radiation therapy (XRT). We do, however, have validated nomograms which allow the stratification of patients according to their risk of disease progression and cancer specific death. This is based in large part on PSA kinetics. A short PSA doubling time (PSA-DT) is associated with a marked increase in the risk of prostate cancer death in the More >

Tajender S. Vasu, William Clayton Elliot, Robert S. H. Lai

Canadian Journal of Urology, Vol.13, No.1, pp. 2993-2996, 2006

Abstract We present a case of an adult male who was admitted with acute renal failure. In evaluating the potential causes of renal failure, workup discovered bilateral ureteroceles. Surgical treatments of the ureteroceles lead to reversal of his acute renal failure. This is the first time that treatment of ureteroceles has been reported to correct acute renal failure in the English literature. More >