Teachers' profile in sustainability: association with personal and social responsibility in physical education classes / Perfil dos professores em sustentabilidade: associação com responsabilidade pessoal e social nas aulas de educação física

ABSTRACT This study aims to identify in a sample of future teachers the profiles of their perceptions, attitudes, and values towards sustainable development and to determine whether a specific profile is related to personal and social responsibility and positive behaviors in Physical Education classes. The sample comprised 372 students (Mage = 22.02±3.16 years; 66.67% girls) from the subject of Physical Education of the Degree of Teacher of Primary Education (Universities of Granada and Zaragoza). An initial cluster analysis revealed the existence of two different groups among future teachers: Cluster 1, "negative perception," represented by 36.3%, and Cluster 2, "positive perceptions" with 63.7% of the sample. Thus, almost 40% of the sample does not perceive the current environmental crisis. The relationship between the groups and the rest of the target variables was analyzed through one-factor ANOVA, finding that Cluster 2 students had higher values in all the dimensions of personal and social responsibility and positive behaviors than those of Cluster 1. Lastly, a discriminant analysis revealed that belonging to a certain university determined belonging to one of the two Clusters, with the values obtained by the sample from the University of Granada being higher than those from the University of Zaragoza.

RESUMO Este estudo tem como objetivo identificar em uma amostra de futuros professores os perfis de suas percepções, atitudes e valores em relação ao desenvolvimento sustentável e determinar se um perfil específico está relacionado à responsabilidade pessoal e social e a comportamentos positivos nas aulas de Educação Física. A amostra foi composta por 372 alunos (idade = 22,02±3,16 anos; 66,67% meninas) da disciplina de Educação Física do curso de Licenciatura em Educação Básica (Universidades de Granada e Zaragoza). Uma análise inicial de agrupamento revelou a existência de dois grupos diferentes entre os futuros professores: O Grupo 1, "percepção negativa", representado por 36,3%, e o Grupo 2, "percepções positivas", com 63,7% da amostra. Assim, quase 40% da amostra não percebe a atual crise ambiental. A relação entre os grupos e o restante das variáveis-alvo foi analisada por meio de uma ANOVA de um fator, que revelou que os alunos do Grupo 2 tinham valores mais altos em todas as dimensões de responsabilidade pessoal e social e comportamentos positivos do que os do Grupo 1. Por fim, uma análise discriminante revelou que o fato de pertencer a uma determinada universidade determinava o pertencimento a um dos dois grupos, sendo que os valores obtidos pela amostra da Universidade de Granada eram mais altos do que os da Universidade de Zaragoza.

Determinación preliminar de triclosán por espectroscopia UV-Vis en aguas residuales de la ciudad de Guatemala / Preliminary determination of triclosan by UV-Vis spectroscopy in wastewater from Guatemala city

Estimar el grado de remoción de contaminantes emergentes en el proceso de tratamiento de aguas residuales es de importancia para evaluar la efectividad de las técnicas empleadas en la actualidad. El triclosán (TCS) es un agente antimicrobiano sintético de amplio espectro, estudios recientes sugieren que presenta elevado potencial como interruptor endocrino. Se determinó la concentración de TCS en cuatro muestras de aguas residuales obtenidas en diferentes etapas del proceso de tratamiento de aguas en la Planta Piloto para el Tratamiento de Aguas Residuales Ingeniero Arturo Pazos Sosa (IAPS). Las muestras de agua fueron filtradas en membrana, tratadas por adición de TCS estándar y formación de un compuesto complejo coloreado amarillo-café cuya absorbancia a 475 nm fue registrada en un espectrofotómetro Cary® 50 UV-Vis. Se identificó la presencia de TCS en concentraciones por arriba de 200 µg/L en tres diferentes etapas del tratamiento de aguas residuales en la planta piloto IAPS lo que permitió concluir que el grado de remoción de TCS en esta planta de tratamiento de aguas osciló entre 31 y 95% dependiendo de la etapa de tratamiento, sin embargo el agua del efluente de la planta no puede considerarse como potable ya que la concentración de TCS determinada en este estudio sobrepasa por al menos un orden de magnitud de diez los niveles a los cuales no se han reportado efectos adversos hacia organismos vivos.

Estimating the degree of contaminants' removal during wastewater treatment is important to evaluate the effectiveness of the current treatment techniques. Triclosan (TCS) is a synthetic broad spectrum antimicrobial agent and recent investigations suggest that this compound has high potential as endocrine disruptor. The concentration of TCS was measured in four wastewater samples obtained at different processing steps at the Ingeniero Arturo Pazos Sosa (IAPS) pilot plant. The wastewater samples were treated by membrane filtration, standard addition of TCS and the subsequent formation of a brown-yellow colored complex, whose absorbance at 475nm was measured in a Cary 50® UV-Vis spectrophotometer. TCS was found at concentrations over 200 µg/L in three different phases of the wastewater treatment at the IAPS plant. In conclusion, the degree of TCS removal in this plant was between 31 and 95% depending on the treatment stage. However plant effluent cannot be considered potable since the TCS concentration found in this study is at least ten times higher than those at which adverse effects to living organisms have not been detected.

Performance of zwitterionic hydrophilic interaction LC for the determination of iodinated X-ray contrast agents.

This study compares the separation performance of a group of iodinated X-ray contrast media on four different columns. The first three were two stationary phases (SPs) modified with C18 and a polar-embedded SP (polar amide group bonded to an alkyl chain), all of which worked under RP-LC mode. The fourth was a zwitterionic sulphoalkylbetaine SP, working under the hydrophilic interaction LC (HILIC) mode. After the optimisation of the different parameters, the zwitterionic column displayed the best separation, which also overcomes the problems encountered when these analytes were separated under RP-LC. Moreover, when HILIC is coupled to MS/MS, sensitivity is enhanced. However, when sewage samples were analysed by SPE followed by the optimal HILIC-MS/MS, the sensitivity of the method was affected due to the high matrix effect, which had to be solved by dilution of the extract. Finally, the method was preliminarily validated with sewage and the figures of merit were comparable to those of the SPE-RP-LC-MS/MS.

Evaluacion y seguimiento de pacientes con diagnostico de tendinitis de extremidades superiores por esfuerzo repetitivo / Evolucion and following of the pacients with the diagnosis of the tendinitis of the superior extremity caused for repetition effort

Realizamos una evaluación y seguimiento de 24 pacientes con diagnóstico de tendinitis de extremidades superiores por esfuerzo repetitivo con el fin de conocer sus características demográficas, áreas de desempeño laboral, diagnóstico específico, tratamiento recibido, n días de tratamiento del episódio y grado de permanencia en el puesto de trabajo a los tres meses del alta. La población fué principalmente femenina, joven, que se desempena como secretarias, envasadoras, cortadoras textiles, con ausentismo laboral promedio de 45 días que al tratarse con antiinflamatorios no esteroidales (AINES), inmovilización y fisioterapia mejoró su sintomatologia y se reintegró mayoritariamente al mismo puesto de trabajo