A los pies de la Sierra de la Muela: aspectos constructivos de la vivienda tradicional y propuestas de actuación

El estudio se desarrollará dentro de un marco concreto del Campo de Cartagena por las características propias de esta área con respecto al resto del Campo de Cartagena en cuanto a orografía, agricultura, poblamiento y arquitectura. Esta zona se localiza en el extremo suroeste del Campo de Cartagena y por tanto, inmediatamente próximo a la Sierra de la Muela. Tal y como se ha señalado, este territorio se caracteriza por su relieve abrupto, a diferencia del resto del Campo de Cartagena, y esto será un factor importante para su transformación en parcelas y terrazas de cultivo. Así mismo las condiciones climáticas obligan a hacer un aprovechamiento meticuloso y un uso óptimo de los recursos hídricos. Los sistemas constructivos, están condicionados por los materiales que ofrece el propio lugar. De entre ellos, el más característico es la láguena, que se extrae de las laguenetas, grandes afloramientos de este material de los que contamos con dos dentro del marco de estudio. Hoy en día, son pocas las casas que aún conservan atisbos de ésta solución constructiva, ya que la técnica original está desaparecida. Igualmente todas las características que definían la identidad de este paisaje se encuentran en estado crítico, desde la arquitectura vernácula hasta la concepción del territorio

Prevalence of post-traumatic stress disorder (PTSD) in university students during the COVID-19 pandemic: a meta-analysis attending SDG 3 and 4 of the 2030 agenda

Background: Most universities around the world have been heavily affected by the COVID-19 pandemic, as declared by the World Health Organization (WHO) in March 2020. Many students were isolated at home and underwent a forced transition from face-to-face learning to e-learning, at least in the first few months. The subsequent months and years were typically characterised by a slow return to normal learning under COVID-19 protocols and restrictions. A potential consequence of the lockdowns, social restrictions and changes to learning is the development of PTSD (post-traumatic stress disorder) in university students, affecting their health and well-being (SDG3) and quality of education (SDG4). Materials and Methods: Medline was searched through PubMed for studies on the prevalence of PTSD in university students from 1 December 2019 to 31 December 2021. The pooled prevalence of PTSD was calculated with random-effects models. Results: A total of six studies were included, across which the prevalence of PTSD among university students was 23%. Meta-regression showed that the prevalence of PTSD was significantly higher with older age, but independent of the percentage of women in a study or its methodological quality. Conclusions: Our results suggest that students suffer from PTSD at a moderate rate. Measures are needed to address the mental health issues of university students that have arisen during COVID-19 all around the world. © 2022 by the authors. Licensee MDPI, Basel, Switzerland

Harmful Elements in Estuarine and Coastal Systems

Estuaries and coastal zones are dynamic transitional systems which provide many economic and ecological benefits to humans, but also are an ideal habitat for other organisms as well. These areas are becoming contaminated by various anthropogenic activities due to a quick economic growth and urbanization. This chapter explores the sources, chemical speciation, sediment accumulation and removal mechanisms of the harmful elements in estuarine and coastal seawaters. It also describes the effects of toxic elements on aquatic flora and fauna. Finally, the toxic element pollution of the Venice Lagoon, a transitional water body located in the northeastern part of Italy, is discussed as a case study, by presenting the procedures adopted to measure the extent of the pollution, the impacts on organisms and the restoration activities

Metales pesados en Trucha Común (Salmo trutta fario).

Se han determinado las concentraciones de metal en hígado branquia y músculo de Trucha común (Salmo trutta fario), procedente de cinco puntos de la cuenca del río Urola. las muestras se analizaron por espectroscopía de absorción atómica, tras su digestión ácida. La distribución de concentraciones es de tipo normal-logarítmico y existe una retención preferente de aluminio, manganeso y zinc en las branquias, mientras el hígado acumula cadmio, hierro y cobre