159 research outputs found
Perfil histopatológico e imuno-histoquímico da leishmaniose tegumentar americana com ênfase nos dendrócitos dérmicos FXIIIa+
The influence of textile materials on flame resistance ratings of professional uniforms
This study compares the flame speed of different textile materials employed in professional uniforms. Five different garments
of aeronauts’ uniforms were analyzed (totaling 200 specimens submitted to flammability tests). Plain weaves and
twill weaves composed by 100% CO; 100% PES; 67% PES/33% CO; 50% PES/50% WO; and 55% PES/45%WO were analyzed
in the warp and filling directions. The flame speed of each material was determined, and differences in the flame propagation
of the fabrics were identified. The lowest flame speed occurred for the material 50% PES/50% WO plain weave and
weft direction (0.742 ± 0.140 m/s). The highest flame speed was 3.698 ± 1.806 cm/s for the material 67%PES/33%CO, plain
weave and filling direction. Future experiments for reducing the fabric flammability of the uniforms could be related to
more closed fabric constructions; mixtures with synthetic fibers to add functionality; changing the direction of the fabric;
and changing the weight and torsion of its constituent yarns.São Paulo Research Foundation—FAPESP (“Fundação de Amparo à Pesquisa do Estado de São Paulo”) Grant Number 2016/01331-
Extracellular Hsp72 concentration relates to a minimum endogenous criteria during acute exercise-heat exposure
Extracellular heat-shock protein 72 (eHsp72) concentration increases during exercise-heat stress when conditions elicit physiological strain. Differences in severity of environmental and exercise stimuli have elicited varied response to stress. The present study aimed to quantify the extent of increased eHsp72 with increased exogenous heat stress, and determine related endogenous markers of strain in an exercise-heat model. Ten males cycled for 90 min at 50% O2peak in three conditions (TEMP, 20°C/63% RH; HOT, 30.2°C/51%RH; VHOT, 40.0°C/37%RH). Plasma was analysed for eHsp72 pre, immediately post and 24-h post each trial utilising a commercially available ELISA. Increased eHsp72 concentration was observed post VHOT trial (+172.4%) (P<0.05), but not TEMP (-1.9%) or HOT (+25.7%) conditions. eHsp72 returned to baseline values within 24hrs in all conditions. Changes were observed in rectal temperature (Trec), rate of Trec increase, area under the curve for Trec of 38.5°C and 39.0°C, duration Trec ≥ 38.5°C and ≥ 39.0°C, and change in muscle temperature, between VHOT, and TEMP and HOT, but not between TEMP and HOT. Each condition also elicited significantly increasing physiological strain, described by sweat rate, heart rate, physiological strain index, rating of perceived exertion and thermal sensation. Stepwise multiple regression reported rate of Trec increase and change in Trec to be predictors of increased eHsp72 concentration. Data suggests eHsp72 concentration increases once systemic temperature and sympathetic activity exceeds a minimum endogenous criteria elicited during VHOT conditions and is likely to be modulated by large, rapid changes in core temperature
Potential chemoprotective effects of green propolis, L-lysine and celecoxib on bone marrow cells and peripheral blood lymphocytes of Wistar rats subjected to bladder chemical carcinogenesis
Ocurrence of male morphotypes of Macrobrachium amazonicum (Caridea, Palaemonidae) in a population with an entirely freshwater life cycle
Casos de leishmaniose tegumentar americana por Leishmania (viannia) braziliensis nos municípios de cosmópolis e Indaiatuba - região de Campinas, estado de São Paulo, Brasil
Acquisition and adaptation of the airway microbiota in the early life of cystic fibrosis patients
Pobreza e Política Social: a implementação de programas complementares do Programa Bolsa Família
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