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Rio Grande, Brazil

Lazzarotto A.R.,Unilasalle | Lazzarotto A.R.,Federal University of Rio Grande do Sul | Bazzo K.O.,Faculdade da Serra Gaucha FSG
Revista Brasileira de Medicina do Esporte | Year: 2016

Introduction: Investigations of physical training with people living with HIV/Aids emphasize the aerobic, strength and concurrent components in multiple sets. Objective: To evaluate the concurrent training with single sets in immune, virological, cardiorespiratory, and muscular parameters in patients with HIV/Aids. Methods: Time series, with the participation of six men and one woman who used HAART. The immune parameter was assessed by flow cytometry, the virological, by the HIV-1 RNA 3.0 (bDNA) assay, the cardiopulmonary through the ramp protocol and the muscular parameter by the 15-repetition maximum and the maximum number of abdominal exercises within 1 minute. The training was performed three times a week for 12 weeks with monthly increments and reevaluations. The statistics included absolute value, median and range and the Wilcoxon t test using SPSS, version 20.0 (p<0.05). Results: In the immunological parameter, the number of CD4+ T lymphocytes increased (p=0.034). In the virological parameter, the viral load decreased in 2 participants (495 for 51 copies/ml and 72 non-detectable [<50 copies/ml]) and 5 maintained a non-detectable viral load. In the cardiorespiratory parameter there was an increase in the absolute VO2max (p=0.028) and maximum workload (Watt) in the cycloergometer (p=0.015). The workload increased in muscular function of all exercises assessed: peck deck (p=0.018), latissimus dorsi pull down (p=0.017), leg press (p=0.018), arm curl (p=0.016) and triceps extension (p=0.017) and maximum number of abdominal exercises in 1 minute (p=0.018). Conclusion: The training improved cardiopulmonary and muscular parameters and caused no deleterious effects on immune parameter or increase in viral load. © 2016, Redprint Editora Ltda. All rights reserved.

Oliveira C.,Unilasalle | Rodrigues R.T.,Federal University of Rio Grande do Sul | Rubio J.,Federal University of Rio Grande do Sul
Clean - Soil, Air, Water | Year: 2014

The formation of aerated flocs (aeroflocs) and the main operating parameters involved were studied to improve the rapid solid/liquid separation by flocculation-flotation. A continuous flow system at the laboratory scale was used that coupled micro-bubbles dissolved air flotation and a flocs generator reactor (FGR). The aerated floc characterization technique was employed to characterize the aggregates obtained using a non-ionic polymer (920SH SNF-Floerger®). Flocculation-flotation studies evaluated the effect of the suspension flow rates (Qs: 0.12, 0.24, 0.36, and 0.48m3/h, the air/solid rates (A/S: 0.01, 0.02, 0.03, and 0.04mg/mg) and the forms of flocculation (flocculation form I: a primary flocculation after coagulation inside a stirred tank, followed by mixture with air bubbles into the FGR and flocculation form II: full flocculation in the FGR). The main results demonstrated that the mixture of particles, air micro-bubbles and polymeric macromolecules in a proper turbulent flow inside the FGR was the key to the effective generation of very light aerated flocs. These aggregates had higher uprising rates, which ranged between 70 and 150m/h and represented 83% of the flocs population at an air/solid rate of 0.02mg/mg and a flow rate of 0.24m3/h. It is believed that, by maximizing operating parameters, improvements are achieved, mainly, both increasing the removal efficiencies and the design of the equipment that can be more compact requiring fewer areas than conventional units. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Grings M.,Federal University of Rio Grande do Sul | Boldrini I.I.,Federal University of Rio Grande do Sul | Knob A.,Herbario do Centro Universitario La Salle | De Loreto Bordignon S.A.,Unilasalle
Phytotaxa | Year: 2014

Calyculogyas serrana (Malvaceae), a new species endemic to the highland slopes of “Serra Geral” plateau, in the Brazilian state of Rio Grande do Sul, is described and illustrated and we also provide information regarding its habitat and conservation status. The genus Calyculogygas has now two species, of which Calyculogygas uruguayensis is the type species. The two species are differentiated with a key, a table and illustrations, and we also provide a map of their distributions. © 2014 Magnolia Press. All rights reserved.

Oliveira C.,Unilasalle | Rodrigues R.T.,Federal University of Rio Grande do Sul | Rubio J.,Federal University of Rio Grande do Sul
Bubble Science, Engineering and Technology | Year: 2014

Understanding the generation and behaviour of air bubbles in the presence of different reagents is important in the solid/liquid separation processes used to treat mineral and water and wastewater by flocculation-flotation. The presence of large air bubbles in aerated flocs, which have higher up-rising rates, can lead to the development of higher capacity units. The present work evaluated the generation and behaviour of air bubbles on hydrophilic particles of quartz in water and other aqueous solutions (10 mg L-1 920SH non-ionic polymer, 30 mg L-1 DF250 surfactant and 50 mg L-1 Flotigan EDA amine). The operating parameters were the air bubble growth time, contact angle, adhesion, attachment and detachment. The main results showed that the air bubbles grew more readily in the presence of non-ionic polymers and after adhesion in non-ionic polymer and water. The formation of large bubbles in aerated flocs in an effort to develop industrial flocculation-flotation operations with higher throughputs units is discussed. © 2014 W. S. Maney & Son Ltd.

Da Silva E.,Unilasalle | Pinto R.S.,Federal University of Rio Grande do Sul | Cadore E.L.,Federal University of Rio Grande do Sul | Kruel L.F.,Federal University of Rio Grande do Sul
Journal of Athletic Training | Year: 2015

Context: The effect of ibuprofen on pain tolerance during exercise is controversial, and its effects on endurance performance have been poorly investigated. Objective: To investigate the effect of prophylactic administration of the nonsteroidal anti-inflammatory drug ibuprofen on the time until the self-report of fatigue (tlim) in runners with exercise-induced muscle damage. Design: Randomized controlled clinical trial. Setting: Laboratory. Patients or Other Participants: Twenty healthy male long-distance runners (age = 18.8 ± 0.4 years, maximal oxygen consumption = 55.5 ± 5.9 mL·kg-1·min-1). Intervention(s): Participants were assigned to 2 groups (ibuprofen group = 10, placebo group = 10) to perform tlim trials (speed corresponded to their previously determined secondventilatory thresholds) 48 hours before and 48 hours after the induction of a lower limb muscle-damage protocol (isokinetic dynamometry). One hour before the second tlim trial, the ibuprofen group received 1.2 g ibuprofen, and the placebo group received lactose orally. Main Outcome Measure(s): Time until self-reported fatigue, heart rate, respiratory quotient, oxygen consumption, and perceived exertion were recorded during each tlim test. Results: Both groups reported increases in muscle pain in the knee extensors and flexors 48 hours after the muscledamage protocol. We observed a reduction in the endurance performance of both groups (P < .01) but no difference between groups (P = .55). Conclusions: Ibuprofen did not reduce the effect of muscle damage and pain on performance. Prophylactic use of nonsteroidal anti-inflammatory drugs did not have an ergogenic effect on running performance after exercise-induced muscle damage in male long-distance runners. © by the National Athletic Trainers' Association, Inc.

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