Insatisfacción de la imagen corporal y su relación con el cutting y síntomas depresivos en adolescentes liberteñas, 2023

La presente investigación tuvo como objetivo indagar el grado de relación entre la insatisfacción de la imagen corporal, la sintomatología depresiva y el cutting. Se trabajó con 385 adolescentes de 18 años de sexo femenino pertenecientes al departamento de La Libertad. El tipo de investigación fue correlacional simple, y el diseño corresponde a un tipo no experimental de corte transversal, con un tipo de muestreo no probabilístico por conveniencia. Para hallar las correlaciones se empleó la fórmula de correlación r de Pearson, a lo cual obtuvimos un grado de correlación de 0.53 entre la insatisfacción de la imagen corporal y la sintomatología depresiva; así como también un grado de correlación de 0.508 entre la insatisfacción de la imagen corporal y el cutting. Se concluyó que existe un grado de correlación directa y de efecto grande entre las variables estudiadas

Conceptual design and research on the thermal performance of a martian human base

Human arrival on Mars is one of the most ambitious goals of the various space agencies. Although interest in the planet may appear to be recent, there is ample evidence to show that mankind turned its attention to Mars several centuries ago. However, it was not until the dawn of the space age that this interest shifted from mere speculation to a growing body of scientific and technical information. Unlike Earth, Mars is a planet whose current conditions are not suitable for life of any kind. The main aspects that condition the Martian environment, such as the atmosphere, temperature, radiation and soil, will be briefly analysed. The house of the first inhabitants of the red planet must meet a series of basic requirements, including simplicity, strength and ensuring adequate conditions of habitability and psychological well-being. A conceptual habitat design based on a structure manufactured entirely on Earth is presented. One of the most important challenges engineers of the future will face in the event of a human arrival on Mars is the thermal control of houses. Unlike Earth, the average temperature on Mars is around 60 °C, which makes it essential to use very precise thermal control techniques. A theoretical thermal analysis of the designed base will be carried out, checking the influence of a set of parameters, and a particular case will be performed with ESATAN software (a leading tool in the European space sector for ESA missions) together with a sensibility analysis to the thermal model main parameters. The assessment of the location and the daily temperature variation has been analysed to obtain the best thermal criteria for time–space selection of the base. The results showed the relevance of the insulation of the module with respect to the Mars ground. A thermal insulation method should be implemented in order to ensure the inhabitants’ well-being

Global COVID-19 lockdown highlights humans as both threats and custodians of the environment

The global lockdown to mitigate COVID-19 pandemic health risks has altered human interactions with nature. Here, we report immediate impacts of changes in human activities on wildlife and environmental threats during the early lockdown months of 2020, based on 877 qualitative reports and 332 quantitative assessments from 89 different studies. Hundreds of reports of unusual species observations from around the world suggest that animals quickly responded to the reductions in human presence. However, negative effects of lockdown on conservation also emerged, as confinement resulted in some park officials being unable to perform conservation, restoration and enforcement tasks, resulting in local increases in illegal activities such as hunting. Overall, there is a complex mixture of positive and negative effects of the pandemic lockdown on nature, all of which have the potential to lead to cascading responses which in turn impact wildlife and nature conservation. While the net effect of the lockdown will need to be assessed over years as data becomes available and persistent effects emerge, immediate responses were detected across the world. Thus initial qualitative and quantitative data arising from this serendipitous global quasi-experimental perturbation highlights the dual role that humans play in threatening and protecting species and ecosystems. Pathways to favorably tilt this delicate balance include reducing impacts and increasing conservation effectiveness