La educación ambiental en una escuela rural en Brasil : trabajadores jóvenes en los campos en larga exposición a pesticidas

Este trabajo, desarrollado por académicos en Química y Ciencias Sociales, es una investigación acción que se basa en la perspectiva crítica de educación ambiental, la cual tuvo lugar en una escuela rural de Brasil. La existencia de estudiantes de la escuela en actividades agrícolas, en larga exposición a pesticidas, constituye el problema del estudio. Para intervenir en esta realidad, elaboramos materiales de enseñanza y las acciones fueron realizadas con el fin de capacitar a los estudiantes y promover un cambio de actitud frente a las situaciones de riesgo. Los datos fueron recogidos por instrumentos cualitativos e investigados por el Análisis de Contenido. Se concluyó que el proceso de intervención en la escuela puede ser una manera de cambiar el posicionamiento de los estudiantes frente a los peligros de la exposición

Do satisfied customers recommend restaurants? the moderating effect of engagement on social networks on the relationship between satisfaction and eWOM

PurposeAcademics and managers scour to understand which perceived quality factors are paramount to consumers during their restaurant experiences and how they influence their emotions, satisfaction, propensity to loyalty and electronic word-of-mouth (eWOM). However, previous studies are divergent regarding the impacts of satisfaction on eWOM. This survey aims to (a) investigate the impacts of perceived quality by restaurant consumers on positive emotions, negative emotions and satisfaction; (b) verify the impacts of satisfaction on the propensity to loyalty and eWOM; (c) test whether the consumers' behavioural engagement in the SNS (CBE-SNS) moderates the relationship between satisfaction and eWOM.Design/methodology/approachThis survey included 416 university students in Peru who completed an electronic form about their experiences at a la carte restaurants. PLS-SEM tested the hypothetical model based on S-O-R Theory (Mehrabian and Russell, 1974).FindingsThe perceived quality by consumers regarding their restaurant experiences positively impacts satisfaction and positive emotions and negatively affects negative emotions. Satisfaction strongly influences the propensity to loyalty but weakly the eWOM. The CBE-SNS moderates the intensity of the relationship between satisfaction and eWOM.Originality/valueThis study is the first to concomitantly test the relationships between perceived quality, positive and negative emotions, satisfaction, the propensity to loyalty, e-WOM and CBE-SNS. Consumer engagement moderates the relationship between satisfaction and eWOM. Accordingly, to stimulate positive eWOM, restaurants must provide their customers with experiences with high perceived quality, impacting their satisfaction, emotions and propensity for loyalty, and developing strategies to increase CBE-SNS.CENTRUMinfo:eu-repo/semantics/publishedVersio

Estimation of theoretical intake of synthetic food colours Azorubine, Erythrosine, Indigotine, and Ponceau 4R by the Brazilian population

There are very few studies evaluating the exposure of the general population to food colours. This study aimed to estimate the Theoretical Maximum Daily Intake (TMDI) by the Brazilian population of four rather seldom-used synthetic food colours: Azorubine, Erythrosine, Indigotine, and Ponceau 4R. The study was conducted using data from the two most recent National Household Budget Surveys (carried out in 2008/2009 and 2017/2018). The study covered the country’s population, sorted into the following groups: gender, geographic region, and age (among people older than 10 years). The results show that the mean TMDI (mg/day) does not exceed the Acceptable Daily Intake (ADI) in any population group for any of the food colours. The highest values found were 12.5% of the ADI for Erythrosine in 2008/2009 and 4% in 2017/2018. A decrease in the mean TMDI was observed for all food colours comparing 2008/2009 and 2017/2018. Intake increases with decreasing age, adolescents being the group with the highest mean TMDI. When considering the prevalence of food consumption instead of the mean consumption, TMDI gets closer to the ADI, reaching 79% of the ADI of Erythrosine for adolescent females. The intake of these food colours proved to be within the recommended levels

Assessing the crashworthiness of a vehicle seat for rear and frontal impacts

A vehicle seat represents an automotive passive system because it limits the damage caused to passengers in the events of an accident or a crash. This way, the present work intends to evaluate the safety of an anchorage mechanism of a frontal vehicle driver seat considering two hazardous situations rear and frontal impacts. Performing a nonlinear FE in static and transient analyses provide the stress distribution in the main components of the mechanism, such as the inner track, the lock device and the bolts using Ansys®. Regulation Nº 17 from Un/ECE regulates the acceleration levels predicted in a crash test and therefore applied in the simulation. In addition, departing from a crash of 5g a fatigue analysis is carried out. From this particular analysis, it becomes possible to evaluate the actual safety of the vehicle seat after a minor crash

NATAÇÃO ESTILO CRAWL: UMA SUGESTÃO DE ENSINO PARA FACILITAR O APRENDIZADO DAS AULAS DE NATAÇÃO

O estilo crawl da natação é conhecido no mundo todo por ser de mais fácil aprendizagem, sendo atualmente a modalidade de nado praticada nas provas de nado livre (DURAN, 2005). O nome crawl é de origem australiana. Seu surgimento veio através da percepção de Dick Cavill membro de família de nadadores australianos ao observar que o batimento simultâneo das pernas e braços que atrasava a propulsão contínua, assim, Cavill descobriu que alternando o movimento das pernas e braços resultaria em aumento da velocidade melhorando a propulsão(COLWIN, 2000)

Meniscal tears: comparison of the conventional spin-echo and fast spin-echo techniques through image processing

Background: Conventional spin-echo (PD-CSE) and fast spin-echo (PD-FSE) techniques are frequently used to detect meniscal tears. However, the time delay for imaging with PD-CSE has resulted in its replacement with faster techniques, such as proton density fast spin-echo (PD-FSE), which has become a frequent tool at most diagnostic centres. Qualitative analysis shows that the PD-CSE technique is more sensitive, but other authors have not found significant differences between the aforementioned techniques. Therefore, we performed a quantitative analysis in this study that aims to measure differences in the quality of the images obtained with both techniques.Methods: We compared the PD-CSE and PD-FSE techniques by quantitatively analysing the obtained proton density images: the area shown, as well as the brightness and lesion contrast of the obtained image. A set of 100 images from 50 patients thought to contain meniscal tears of the knee were selected. These 100 images were obtained from all individuals using both the PD-CSE and PD-FSE techniques. the images were processed using software developed in Delphi. in addition to these quantifications, three physicians, who are specialists in radiology and capable of analysing magnetic resonance (MR) images of the musculoskeletal system, qualitatively analysed the diagnostic sensitivity of both techniques.Results: On average, samples obtained via the PD-CSE technique contained 22% more pixels in the lesion area. the contrast differed by 28%, and the brightness differed by 31%. the two techniques were correlated using Student's t-test, which showed a statistically significant difference. the specialists detected meniscal tears in 30 of the images obtained via the PD-CSE technique, while only 72% of these cases were detected via the PD-FSE technique.Conclusions: the PD-CSE technique was shown to be superior to PD-FSE for all of the evaluated properties, making its selection preferable.FAEP (Fundacao de Amparo a Ensino e Pesquisa) from Universidade de Mogi das CruzesUniv Mogi das Cruzes, Nucleo Pesquisas Tecnol, São Paulo, BrazilUniversidade Federal de São Paulo, Dept Diagnost Imagem EPM, São Paulo, BrazilUniversidade Federal de São Paulo, Dept Diagnost Imagem EPM, São Paulo, BrazilWeb of Scienc