323,083 research outputs found
Morphological changes on the intestinal mucosa in orthotopic neobladder
No full textIntroduction: The intestinal mucosa undergoes significant atrophic changes when it is used to reconstruct the urinary tract. We analyzed the ultrastructural changes of intestinal mucosa in the orthotopic neobladder on the basis of our clinical experience. Patients and Methods: Fifteen male patients with an ileal neobladder underwent endoscopic biopsy at different postoperative intervals. Results: No significant changes were observed 3 months after surgery. After 6 and 12 months, the structure of the microvilli was modified significantly. No other substantial changes after 24 months were observed. Conclusions: Progressive modifications occur in the cytoplasmic structures involved in the absorptive process. They do not seem to begin before 3 months and are almost totally completed after 1 year. Copyright © 2012 S. Karger AG, Basel
Internet and Mathematic Education (E-Learning objects and tools for Mathematics Education)
No full textThis paper analyzes some e-learning objects and didactics tools for improving mathematics education. The learning objects and tools analyzed are Videos, Applet Java, Geogebra, Wolfram|Alpha with his Widgets, Google Spreadsheets and Wiris. The analysis has been based on the parameters considered more suitable for didactics of mathematics. Such parameters are: interactivity, shareability, availability, applicability and feasibility.
The paper presents a brief description of how the didactics is changing with internet, in particularly the didactics of the mathematics. It then shows the objects and tools selected with some application examples. Finally, it illustrates an comparison of the objects and tools based on the parameters listed above
Challenges of meta-learning and rational analysis in large worlds
No full textWe challenge Binz et al.'s claim of meta-learned model superiority over Bayesian inference for large world problems. While comparing Bayesian priors to model-training decisions, we question meta-learning feature exclusivity. We assert no special justification for rational Bayesian solutions to large world problems, advocating exploring diverse theoretical frameworks beyond rational analysis of cognition for research advancement
Catheters and Infections
No full textCatheters are used for effective drainage of the bladder, either temporally or permanently,
in the presence of physiological and anatomical defects or obstruction of the lower urinary
tract. Catheters are used for a variety of reasons, as follows, to maintain bladder drainage
during and following surgery or epidurals anesthesia for minimizing and prevention of the
risk of distension injuries; investigations, for accurate urine output measurement, and
measurement of post-micturition residuals; treatments, to relieve urinary retention or for
chemotherapy instillation; intractable incontinence, as the final option for containment
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