YouTube videos offer a potentially useful vehicle for the communication of science, health, and medical information about COVID-19 to children. Findings from this research showed that primary characters appearing in children's educational YouTube videos about COVID-19 were most often adults, with about an equal number of men and women and few characters from diverse racial and ethnic backgrounds. Primary characters frequently demonstrated and modeled protective health measures. Adult expert characters (medical professionals and scientists) appeared to some extent in these videos. Directive discourse frames appeared most frequently, followed by the informative and persuasive discourse frames when communicating scientific and health information. Changes in the use of informative, directive, and persuasive frames before and after the U.S. Centers for Disease Control (CDC) announced guidelines on how to communicate about COVID-19 with children are explored.
Research on juvenile delinquency and adolescent maladjustment indicates that the beginning of these processes is found in the relationship between multiple risk factors at the individual, family and community levels in this population. The objective of this research was to analyze the risk factors related to the transition from the child welfare system to the adolescent justice system in a group of Chilean male adolescents (n = 108), aged 14–18 years, grouped according to their membership in the child welfare system, the adolescent justice system or both systems. Through a quantitative methodology, variables associated with risk factors were examined by means of the Risk and Resource Evaluation Form FER-R and the Risk and Criminogenic Needs Inventory IRNC instruments. Logistic regression analysis found that the adolescent population within the child welfare system was more likely to enter the adolescent justice system if the following risk factors were present: weak family supervision, consumption of drugs, socially maladaptive peer relationships, and risky free time. These results emphasize that child welfare system interventions should focus on parental support and the management of socio-community networks to prevent re-entry of the adolescent population into the justice system.
Esta investigación presenta una aproximación para determinar la presencia de 131I (isótopo radiactivo usado en el diagnóstico y la terapia metabólica del cáncer de tiroides) en el río Bogotá, cuerpo de agua ubicado en el límite de la capital colombiana. Se tomaron muestras a lo largo de la cuenca media del río, las cuales fueron analizadas por medio de espectrometría de rayos gamma de alta resolución. Se obtuvo una concentración máxima de 16.8 Bq L-1 en el punto denominado Puente de Guadua, cercano a la PTAR El Salitre, seguido por la medición en el punto Gibraltar, con 16.1 Bq L-1. Estos resultados se consideran relevantes por ser cercanos a la concentración máxima establecida para vertimientos en forma líquida a alcantarillas, ríos y otras grandes masas de agua, estipulados en la normativa colombiana, además de que superan el valor de referencia para agua de consumo señalado por la Organización Mundial de la Salud. La presencia de 131I se puede asociar a las actividades del sector médico, como consecuencia del transporte del radioisótopo desde las instalaciones donde se aplica, pasando por las redes de alcantarillado, a la planta de tratamiento de aguas residuales de la ciudad y finalmente al río.
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