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  • Open Access

    RESIDENT’S CORNER

    Intrarenal pseudoaneurysm presenting with microscopic hematuria and right flank pain

    Lori M. Dulabon1, Amar Singh1, Frank Vogel2, Alireza Moinzadeh1

    Canadian Journal of Urology, Vol.14, No.3, pp. 3588-3591, 2007

    Abstract We report a case of a 19-year-old female who presented with right flank pain and microscopic hematuria.Three years earlier, she sustained a stab wound to the right flank and was managed conservatively. After being diagnosed with an enhancing renal mass using computed tomography (CT) scan, duplex ultrasound and angiography were performed revealing an intrarenal pseudoaneurysm. Endovascular coils were successfully employed to selectively embolize the pseudoaneurysm. More >

  • Open Access

    MINIMALLY INVASIVE AND ROBOTIC SURGERY

    Prostate weight: an independent predictor for positive surgical margins during robotic-assisted laparoscopic radical prostatectomy

    Lambda P. Msezane, Ofer N. Gofrit, Shang Lin, Arieh L. Shalhav, Gregory P. Zagaja, Kevin C. Zorn

    Canadian Journal of Urology, Vol.14, No.5, pp. 3697-3701, 2007

    Abstract Introduction: Pre-operative prediction of pathological stage represents the cornerstone of prostate cancer management. Patient counseling is routinely based on pre-operative PSA, Gleason score and clinical stage. In this study, we evaluated whether prostate weight (PW) is an independent predictor of extracapsular extension (ECE) and positive surgical margin (PSM).
    Methods: Between February 2003 and November 2006, 709 men underwent robotic-assisted laparoscopic radical prostatectomy (RLRP). Pre-operative parameters (patient age, pre-operative PSA, biopsy Gleason score, clinical stage) as well as pathological data (prostate weight, pathological stage) were prospectively gathered after internal-review board (IRB) approval. Evaluation of the influence of… More >

  • Open Access

    ABSTRACT

    Supplement. 3 Eighth Multidisciplinary Workshop. Argentine Biology Society. BUENOS AIRES - ARGENTINA.

    BIOCELL, Vol.31, Suppl.S, pp. 319-354, 2007

    Abstract This article has no abstract. More >

  • Open Access

    ARTICLE

    Light and temperature effects on seed germination of four native species of Mediterranean high mountains (Spain)

    Serrano-Bernardo F1, JL Rosúa1, M Díaz-Miguel2

    Phyton-International Journal of Experimental Botany, Vol.76, pp. 27-38, 2007, DOI:10.32604/phyton.2007.76.027

    Abstract The Mediterranean region is considered one of the most important zones worldwide in terms of plant diversity. Sierra Nevada (S Spain) is a unique mountain massif within the high-mountain systems of the Mediterranean. It is of great floristic importance and very rich in endemic species. However, it requires numerous tasks for restoring plant cover due to the constant anthropic degradation, especially because of the ski station located near the second-highest peak of the mountain. One of the restoration efforts consists of trying to reproduce, in the laboratory, the ideal conditions to pre-germinate seeds of some… More >

  • Open Access

    ARTICLE

    Endogenous ADP-ribosylation of eukaryotic elongation factor 2 and its 32 kDa tryptic fragment

    KIVANÇ ERGEN*, MUHAMMET BEKTAŞ**, SINA GÖKÇE**, RÜSTEM NURTEN**

    BIOCELL, Vol.31, No.1, pp. 61-66, 2007, DOI:10.32604/biocell.2007.31.061

    Abstract Eukaryotic elongation factor 2 (eEF-2) can undergo ADP-ribosylation in the absence of diphtheria toxin. The binding of free ADP-ribose and endogenous transferase-dependent ADP-ribosylation were distinct reactions for eEF-2, as indicated by different findings. Incubation of eEF-2 tryptic fragment 32/33 kDa (32F) with NAD was ADP-ribosylated and gave rise to the covalent binding of ADP-ribose to eEF-2. 32F was revealed to be at the C-terminal by Edman degradation sequence analysis.
    In our study, the elution of 32F from SDS-PAGE was ADP-ribosylated both in the presence and absence of diphtheria toxin. These results suggest that endogenous ADP-ribosylation More >

  • Open Access

    ABSTRACT

    Weight And Reliability Optimization Of A Helicopter Composite Armor Using Dynamic Programming

    V.C. Santos1, P.S. Lopes1, R. Gärtner2, A.B. Jorge1

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.4, No.2, pp. 53-58, 2007, DOI:10.3970/icces.2007.004.053

    Abstract This work presents an approach for weight and reliability optimization of aeronautical armors. Military and police helicopters are usually exposed to highly risky situations, with a high probability for these aircrafts to be hit by projectiles. In this context, floor aircraft armor can be used to protect the crews' lives. However, the armoring of an aircraft causes an increase in weight. If this extra weight is poorly arranged, the changes in aircraft centroid position may even destabilize the aircraft. Thus, it is essential to design an armor not only to protect the aircraft, but also… More >

  • Open Access

    ABSTRACT

    Envisioning Structure-Property Relationships at the Nano and Macro Scales: Graphics for Presentation and Insight

    Ronald D. Kriz1, Arun K. Nair2

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.3, No.1, pp. 43-50, 2007, DOI:10.3970/icces.2007.003.043

    Abstract This article has no abstract. More >

  • Open Access

    ABSTRACT

    Effect of the Reynolds Number on the Flow Pattern in a Stenotic Right Coronary Artery

    Biyue Liu1

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.1, No.1, pp. 35-40, 2007, DOI:10.3970/icces.2007.001.035

    Abstract It is well known that the Reynolds number has a significant effect on the blood flow in human arteries. We developed a three dimensional model with simplified geometry for a diseased right coronary artery segment to study the influence of the Reynolds number on the flow pattern in a stenotic coronary artery. Computations were carried out under physiological flow conditions to examine how the characteristics of the flow, such as the flow velocity and the pressure drop along the inner wall, change corresponding to the varying of the blood viscosity or to the varying of More >

  • Open Access

    ABSTRACT

    High-precision Path Prediction Simulation of Non-straight and High-speed Propagating Crack

    Nishioka T.1, Fujita N.1, Fujimoto T.1, Kogame M.1

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.1, No.3, pp. 127-132, 2007, DOI:10.3970/icces.2007.001.127

    Abstract In this study, numerical simulations of mixed-mode fracture paths in dynamic fracture phenomenon are carried out by using moving finite element method based on Delaunay automatic mesh generation. In addition, the experiments under same condition was carried out, and the both results were compared. The calculated paths by the simulation agree well with the fracture paths of the experiments. More >

  • Open Access

    ARTICLE

    Two-Layer Passive/Active Anisotropic FSI Models with Fiber Orientation: MRI-Based Patient-Specific Modeling of Right Ventricular Response to Pulmonary Valve Insertion Surgery

    Dalin Tang*, Chun Yang, Tal Geva‡,§, Pedro J. del Nido

    Molecular & Cellular Biomechanics, Vol.4, No.3, pp. 159-176, 2007, DOI:10.3970/mcb.2007.004.159

    Abstract A single-layer isotropic patient-specific right/left ventricle and patch (RV/LV/Patch) combination model with fluid-structure interactions (FSI) was introduced in our previous papers to evaluate and optimize human pulmonary valve replacement/insertion (PVR) surgical procedure and patch design. In this paper, an active anisotropic model with two-layer structure for ventricle wall and tissue fiber orientation was introduced to improve previous isotropic model for more accurate assessment of RV function and potential application in PVR surgery and patch design. A material-stiffening approach was used to model active heart contraction. The computational models were used to conduct ``virtual (computational)'' surgeries More >

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