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Search Results: 1 - 10 of 52995 matches for " Carlos Hermann Schaal "
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Safety and efficacy of sildenafil in Brazilian men with erectile dysfunction secondary to spinal cord injury
Carlos Eurico Dornelles Cairoli,Eric Roger Wroclawski,Carlos Hermann Schaal,Francisco Ricardo Nogueira de Azeredo Coutinho
Einstein (S?o Paulo) , 2008,
Abstract: Objective: To evaluate the effect of sildenafil in Brazilian patientswith erectile dysfunction secondary to spinal cord injury. Methods:Participants were examined at the time of enrollment and two andsix weeks later. Baseline and follow-up data on sexual functionwere collected. After the second week, the initial dose of sildenafil(50 mg) could be adjusted according to efficacy and tolerability.Efficacy was assessed primarily through the scores on questions 3and 4 of the International Index of Erectile Dysfunction. Secondaryanalyses included questions and domains of the index, globalefficacy evaluation, percentage of success in sexual intercourseattempts, answers to the Quality of Life and Erectile FunctionQuestionnaire, and partner’s satisfaction. Results: Ninety-onepatients were evaluated as to efficacy and 94 as to safety. Medianage of patients was 33 years, and median time between spinal cordinjury and study enrollment was three years. Sildenafil produceda significant increase in the mean scores of questions 3 and 4(p < 0.001 in both comparisons), as well as in other questionsand in all domains of the International Index of Erectile Dysfunction.Improved erections were reported by 89% of patients, and theproportion of successful sexual intercourse attempts went from6 to 74% (p < 0.001). Mean scores on the Quality of Life andErectile Dysfunction Questionnaire increased from 60 to 74%(p < 0.001). Ninety percent of 42 women reported being moderatelysatisfied to very satisfied with their partners’ treatment. The mostcommon adverse events were headache (16%), flushing (11%) andnasal congestion (10%). Conclusions: Sildenafil proved to be safeand effective in treating Brazilian men with erectile dysfunctionsecondary to traumatic spinal injury.
On Some Class of Distance Functions for Measuring Portfolio Efficiency  [PDF]
Carlos Barros, Walter Briec, Hermann Ratsimbanierana
Journal of Mathematical Finance (JMF) , 2011, DOI: 10.4236/jmf.2011.12003
Abstract: Morey and Morey [1] have developed an approach for gauging portfolio efficiencies in the context of the Markowitz model. Following some recent contributions [2,3], this paper analyzes the axiomatic properties of distance functions extending an earlier approach proposed by Morey and Morey. The paper also focusses on the hyperbolic measure and the McFadden gauge function [4]. Among other things, overall, allocative and portfolio improvements possibilities (in term of return expansion or/and risk contraction) based upon the indirect mean-variance utility function are analyzed. Along this line, duality results are established in each case. This enables us to calculate the degree of risk aversion maximizing the investor indirect mean-variance utility function in either return expansion or risk contraction. An empirical illustration is provided and reveal ranking of preferred risks aversion for some “CAC40” assets.
Neoplasia in horseshoe kidney with pyelic fusion and crossed single ureter
Costa, Renato P.;Schaal, Carlos H.;Navarro, Fábio C.;
International braz j urol , 2004, DOI: 10.1590/S1677-55382004000400010
Abstract: horseshoe kidney with pyelic fusion and crossed single ureter is a rare anomaly, with only 3 cases described in the literature. such anomaly can be accompanied by other abnormalities, such as congenital scoliosis and situs inversus totalis. we present one case of this malformation associated with malignant neoplasia, treated with partial nephrectomy.
Enriching traditional biology lectures digital concept maps and their influence on cognition and motivation
Steffen Schaal
World Journal on Educational Technology , 2010,
Abstract: Higher education deals with complex knowledge and university teaching should focus on conceptual understanding. Adequate knowledge structures are essential and active knowledge construction should be supported for meaningful learning. But traditional lectures mostly are structured by slides which may misleadingly cause linear representations of knowledge. In this study, a framework for digital concept maps was developed to complement lectures in human biology. The course was aimed at student science teachers at the undergraduate level. The work is based on theoretical research on computer-supported learning, on knowledge structures perspectives within learning environments as well as on self-determination theory. Each session was supplemented by a digital, multimedia-enriched concept map. After each single lecture, students had free access to the concept maps to reinforce the latest topics. The objective of the study was to examine if the use of complementary concept maps (i) influences achievement and (ii) if motivational variables influence the use of the concept maps. In both cases, influences of computer-user self-efficacy were expected (iii). The students’ (N = 171) concept map use was logged, achievement was tested and motivational variables were surveyed (e.g. interest/ enjoyment, perceived competence, effort/ importance, value/usefulness). The logfile-data allowed distinguishing learners according to their concept map use. Results reveal the benefit of additional concept maps for achievement, positive motivational aspects and computer-user self-efficacy as mediating factors showed some influence. The emphasize of further research should be on students’ active engagement in structuring their individual learning by constructing concept maps themselves, especially in science education courses.
Longitudinal urethral sling with prepubic and retropubic fixation for male urinary incontinence
Schaal, Carlos H.;Costa, Renato P.;Sala, Fernando C.;Vanni, André P.;Cortez, José P.;
International braz j urol , 2004, DOI: 10.1590/S1677-55382004000400007
Abstract: objective: description and early results of a new urethral sling technique for treatment of postprostatectomy urinary incontinence, which combines efficacy, low cost and technical simplicity. materials and methods: from may 2003 to april 2004, 30 patients with moderate or total urinary incontinence, following radical prostatectomy or endoscopic resection of the prostate, underwent the new technique. the technique is based on the placement of a longitudinal-shaped sling in the bulbar urethra, measuring 4 cm in length by 1.8 cm in width, made of dacron or polypropylene mesh, fixed by 4 sutures on each side, with 2 sutures passed with stamey-pereira needle by retropubic approach and 2 by prepubic approach, which are then tied over the pubis. pressure control was determined by interrupting the loss of infused water through a suprapubic cystostomy 60 cm from the pubis level. results: pre-operative assessment excluded vesical instability, urethral stenosis and urinary infection. suprapubic cystostomy was removed when the patient was able to satisfactorily void with urinary residue lower than 100 ml, which occurred in 29 of the 30 cases. in 2 cases, there was infection of the prosthesis, requiring its removal. in 3 cases, there was the need to adjust the sling (increasing the tension), due to failure of the urinary continence. overall, 20 of 30 (66.7%) operated patients became totally continent, and did not require any kind of pads. four of 30 (13.3%) patients achieved partial improvement, requiring 1 to 2 pads daily and 6 of 30 (20%) patients had minimal or no improvement. there was no case of urethral erosion. conclusion: this new sling technique has shown highly encouraging preliminary results. its major advantage over other surgical techniques for treatment of moderate or severe stress urinary incontinence is the simplicity for its execution and low cost. a long-term assessment, addressing maintenance of continence, detrusor function and preservation of the upper urina
Is the periprostatic anesthetic blockade advantageous in ultrasound-guided prostate biopsy?
Vanni, André P.;Schaal, Carlos H.;Costa, Renato P.;Sala, Fernando C.;
International braz j urol , 2004, DOI: 10.1590/S1677-55382004000200005
Abstract: objective: to assess the benefit of the periprostatic administration of lidocaine previously to ultrasound-guided prostate biopsy. materials and methods: in the period from april to october 2002, forty patients underwent ultrasound-guided prostate biopsy due to increased psa or abnormal digital rectal examination. a randomized double-blind study was performed, where the patients received an injection of lidocaine 2% or saline solution, in a total of 10 ml periprostatic. immediately following the biopsy, the pain associated to the procedure was assessed, using a visual analogical scale from 0 to 10. the mean number of fragments collected per patient in the biopsies was 11.3. the statistical analysis used for assessment of pain was the student's t, with p < 0.05 being significant. results: the groups were homogeneous concerning the anthropometrical data. in relation to pain, those patients in the groups that underwent biopsy with the use of lidocaine presented a maximum score of 6, while in the group that underwent biopsy with the use of saline solution, 4 patients presented score 7 ou 8. the mean score and standard deviation with lidocaine were 2.55 ± 2.34 (ci 95% = 1.53 to 3.57) and with saline solution were 3.75 ± 2.52 (ci 95% = 2.66 ± 4.84) with no statistical significant difference between the groups. conclusion: the lidocaine injection did not show statistical difference when compared with saline solution in the periprostatic blockade during echo-guided prostate biopsy.
Primary renal sarcoma with morphologic and immunohistochemical aspects compatible with synovial sarcoma
Schaal, Carlos H.;Navarro, Fábio C.;Moraes Neto, Francisco A.;
International braz j urol , 2004, DOI: 10.1590/S1677-55382004000300006
Abstract: primary synovial sarcoma of the kidney is a rare tumor that is difficult to diagnose. we present one case that was not diagnosed through fine needle aspiration, requiring a morphologic and immunohistochemical analysis of the incision biopsy. since the tumor was surgically unresectable, chemotherapy was employed previously to definitive radical surgery.
Is the periprostatic anesthetic blockade advantageous in ultrasound-guided prostate biopsy?
Vanni André P.,Schaal Carlos H.,Costa Renato P.,Sala Fernando C.
International braz j urol , 2004,
Abstract: OBJECTIVE: To assess the benefit of the periprostatic administration of lidocaine previously to ultrasound-guided prostate biopsy. MATERIALS AND METHODS: In the period from April to October 2002, forty patients underwent ultrasound-guided prostate biopsy due to increased PSA or abnormal digital rectal examination. A randomized double-blind study was performed, where the patients received an injection of lidocaine 2% or saline solution, in a total of 10 ml periprostatic. Immediately following the biopsy, the pain associated to the procedure was assessed, using a visual analogical scale from 0 to 10. The mean number of fragments collected per patient in the biopsies was 11.3. The statistical analysis used for assessment of pain was the Student's t, with p < 0.05 being significant. RESULTS: The groups were homogeneous concerning the anthropometrical data. In relation to pain, those patients in the groups that underwent biopsy with the use of lidocaine presented a maximum score of 6, while in the group that underwent biopsy with the use of saline solution, 4 patients presented score 7 ou 8. The mean score and standard deviation with lidocaine were 2.55 ± 2.34 (CI 95% = 1.53 to 3.57) and with saline solution were 3.75 ± 2.52 (CI 95% = 2.66 ± 4.84) with no statistical significant difference between the groups. CONCLUSION: The lidocaine injection did not show statistical difference when compared with saline solution in the periprostatic blockade during echo-guided prostate biopsy.
Mímico: a monadic combinator parser generator
Camar?o, Carlos;Figueiredo, Lucilia;Rodrigues, Hermann;
Journal of the Brazilian Computer Society , 2003, DOI: 10.1590/S0104-65002003000200004
Abstract: this article describes a compiler generator, called mímico, that outputs code based on the use of monadic combinators. mímico can parse infinite look-ahead and left-recursive context free grammars and defines a scheme for handling the precedence and associativity of binary infix operators, and monadic code in semantic rules. mímico provides an easy way of specifying the syntax and semantics of languages, and generates readable output in the form of haskell programs. the article presents mímico's general principles, its formal syntax and semantics, its limitations and illustrative examples of its behaviour.
Estudio de 64 enfermos de glomérulo-nefritis aguda tratados con régimen normal
JULIO MENEGHELLO,HERMANN NIEMEYER,CARLOS JUNEMANN
Revista chilena de pediatría , 1947,
Abstract:
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