Introduction: Levels of anxiety and depression have increased internationally during the COVID-19 pandemic. Objective: To determine the prevalence of anxiety and depression symptoms and identify their associated factors including lockdown measures in the general population over 18 years from Chihuahua, Chihuahua, Mexico during the COVID-19 pandemic. Method: Cross-sectional study, with online survey and snowball sampling. The GAD-7 (anxiety), PHQ-9 (depression) and Likert (social distancing measures) scales were used. Frequencies, measures of central tendency and dispersion were calculated; a bivariate analysis was performed with odds ratio as a measure of association between those with the presence and absence of anxiety and depression symptoms; for the total population and stratifying by sex, calculating the degree of association between the categorical variables using Fisher's exact test and Chi2, considering a p<.05. Results: From 377 participants, 46% had symptoms of anxiety and 43% depressive symptoms. Being a woman, single, young, student, not exercising, smoking, alcohol consumption, practicing social distancing measures, the history of a previous mental disorder or mental health care, were associated with the presence of symptoms of anxiety and/or depression. Discussion and conclusion: High prevalence of anxiety and depression symptoms were found, justifying a follow-up of the mental health of the population.
DOI: https://doi.org/10.54167/tecnociencia.v16i1.889
Background: Nosocomial infections are important health problems and a cause of complications and death in hospitalized patients. This problem should be solved from the preventive angle, avoiding the spread of infections by designing disinfection methods based on the photocatalytic activity of semiconductor materials like Tin Oxide (SnO2).
Methods: Antimicrobial activity of UV light was tested using Candida albicans ATCC10231 inoculation of SnO2 thin films by counting colony forming units (UFC). Interaction of UV light with SnO2 was analyzed by the Density Functional Theory (DFT) and the extension to Hubbard model (DFT+U) schemes to predict the electrons behavior in a subatomic level.
Results: After exposure to UV light, C. albicans had a reduction of 36.5% of viable cells, and when SnO2 was included, cells were reduced by 60.2%. Measures of the electronics structure obtained by the first principle calculations under the DFT and DFT+U schemes showed that O-p orbitals mediate the oxidation process in the bulk semiconductor. By including the surface effects when cleaving the (1 0 0) plane, the three orbitals O-p, Sn-p, and Sn-s are the mediators.
Conclusions: SnO2 films are promising antimicrobial coatings because UV light has a synergic activity with thin films, resulting in a faster disinfection.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.