Predicting and Moderating COVID-Fear and Stress among College Students in Argentina and the USA.

The COVID-19 pandemic negatively affected mental health worldwide and college students were particularly vulnerable to its adverse effects. This longitudinal study was designed to highlight and compare the COVID experiences of college students in Argentina and the USA (N = 361). Specifically, we examined individual factors (gender, emotional regulation, and social support) assessed prior to the pandemic for their role as predictors or moderators of COVID-fear and psychological stress during the first months of the pandemic. The results supported measurement invariance for brief measures of COVID-fear and indicated that, overall, COVID-fear was highest during the second wave of the study (March-April 2020), lowest during the third wave (June 2020), and then rose again during the fourth wave (September 2020). Several interaction effects emerged, revealing important country-level differences in COVID-fear effects for the emotion regulation and social support factors. More so in the Argentina sample than in the USA sample, higher levels of social support at Time 1 were associated with increases in the effect of COVID-fear on stress among students. We discussed the implications of these and other findings for future cross-cultural pandemic-related stress studies.

Sociodemographic factors as moderators of COVID-19 stress on depression.

BACKGROUND AND OBJECTIVES: The COVID-19 pandemic has disrupted many aspects of daily life, but relatively little is known about COVID-19-related stress for subgroups in the population. We examined differences in COVID-stress and depression as a function of gender, race, ethnicity, and subjective social status. We tested these factors as moderators of the association between COVID-stress and depression. DESIGN: We used a cross-sectional design to test associations between sociodemographic factors, COVID-stress, and depression. Analyses were based on confirmatory factor analytic and structural equations models. METHODS: A convenience sample of 1,058 U.S. MTurk workers and college students (54.5% cisgender women; 55.1% racial/ethnic minoritized individuals) was recruited. Participants completed self-report measures of COVID-stress and depression. RESULTS: COVID-stress was positively associated with depression. Overall, neither gender nor racial minoritized status moderated COVID-stress effects on depression. However, intersectional analyses revealed COVID-stress was a significant risk factor for depression among Black women compared to other participants. COVID-stress was more strongly linked to depression for Hispanic individuals and participants with higher social status. CONCLUSIONS: Future studies may benefit from the COVID-stress scale evaluated in this study and by considering the differential effects of sociodemographic factors on psychological functioning during the pandemic.

A Person-Centered Approach to Adolescent Nonsuicidal Self-Injury: Predictors and Correlates in a Community Sample.

Growing incidence of nonsuicidal self-injury (NSSI) and a lack of intensive examination of NSSI variability among adolescents justify identification of latent classes based on the endorsement of different NSSI behaviors. Latent class analysis was used to detect the heterogeneity of past month NSSI among 322 high school students (73.2% female). Two interpretable latent classes emerged. The Severe/Multimethod NSSI class (39%) engaged in almost all forms of NSSI with high intensity and motivated mainly for intrapersonal reasons. The results imply that compared to Mild/Moderate NSSI group (61%), the Severe class is at greater risk for poor mental health, which can exacerbate further NSSI acts. In school settings, identifying adolescents who are vulnerable for more severe NSSI can help to interrupt NSSI trajectories to emerging adulthood.

Preparación del lecho de la herida: limpieza segura y eficaz con ácido hipocloroso pH 5.5.

SINOPSIS: El objetivo de la limpieza del lecho de la herida es favorecer la remoción de materia extraña, rehidratar el lecho y acelerar el proceso de cicatrización, considerando siempre una evaluación holística del paciente. La limpieza es un paso fundamental en la preparación del lecho de la herida. En los últimos años, se ha intensificado la búsqueda y elaboración de soluciones limpiadoras con el potencial de promover la curación mediante la eliminación de barreras locales para la curación, sin comprometer el tejido sano y/o en formación. Entre ellas, el ácido hipocloroso (HOCl) puro pH 5.5 cumple con los objetivos de la preparación del lecho de la herida y de limpieza terapéutica de forma biocompatible, segura, eficaz y natural. Este artículo tiene por objetivo realizar una revisión de la evidencia existente en relación con las soluciones limpiadoras y los beneficios del HOCl puro pH 5.5. CONFLICTO DE INTERÉS: CRC declara no tener conflicto de interés. BAD y CLG son empleadas de Laboratorio UrgoMedical Chile.

Tungsten Oxide Layers of High Acoustic Impedance for Fully Insulating Acoustic Reflectors.

Gravimetric sensors based on solidly mounted resonators require fully insulating acoustic reflectors to avoid parasitics when operating in liquid media. In this work, we propose a new high-acoustic impedance material, tungsten oxide ([Formula: see text]), for acoustic reflectors. We have optimized the sputtering conditions of [Formula: see text] to obtain nonconductive layers with mass density around [Formula: see text] and acoustic velocities for the shear and the longitudinal modes up to 2700 and 4500 m/s, respectively. Compared to other conventionally used high impedance layers, [Formula: see text] films display several manufacture advantages, such as high deposition rates, great reproducibility, and good adhesion to underlying substrates. We have demonstrated the applicability of [Formula: see text] in practical shear mode bulk acoustic wave resonators that display good performance in liquid environments.

Policitemia relativa. algunas características clínicas y de laboratorio / Relative polycytheia: some clinical and laboratory characteristics

El estudio de 45 pacientes con policitemia relativa (PR) atendidos en la consulta externa del Instituto de Hematología e Inmunología, mostró un predominio del sexo masculino. En relación con la edad, el mayor número de casos se presentó entre los 35 y 44 años, con disminución progresiva a partir de esta edad. Las causas más frecuentes encontradas fueron: hipertensión arterial y la asociación de esta con el hábito de fumar. El síntoma y el signo más frecuente fue la cefalea y la rubicundez, respectivamente. Todas las complicaciones fueron de tipo vascular. El mayor número de casos presentó cifras de hematócrito que oscilaba entre 0,54 y 0,56. Las características de la volemia fueron: volumen globular (VG) dentro del rango normal con volumen plasmático (VP) disminuido y VG en el límite superior normal o un poco por encima de lo normal con VP cerca del límite inferior normal. Se concluye que los factores analizados en los 45 pacientes con PR se comportan de manera similar a lo comunicado por la literatura médica internacional y se llama la atención sobre este trastorno no pocas veces considerados sin trascendencia y que sin embargo, conlleva un alto riesgo de fenómenos tromboembólicos

Policitemia relativa: algunas características clínicas y de laboratorio / Relative polycythemia: some clinical and laboratory characteristics

El estudio de 45 pacientes con policitemia relativa (PR) atendidos en la consulta externa del Instituto de Hematología e Inmunología, mostró un predominio del sexo masculino. En relación con la edad, el mayor número de casos se presentó entre los 35 y 44 años, con disminución progresiva a partir de esta edad. Las causas más frecuentes encontradas fueron: hipertensión arterial y la asociación de esta con el hábito de fumar. El síntoma y el signo más frecuente fue la cefalea y la rubicundez, respectivamente. Todas las complicaciones fueron de tipo vascular. El mayor número de casos presentó cifras de hematócrito que oscilaba entre 0,54 y 0,56. Las características de la volemia fueron: volumen globular (VG) dentro del rango normal con volumen plasmático (VP) disminuido y VG en el límite superior normal o un poco por encima de lo normal con VP cerca del límite inferior normal. Se concluye que los factores analizados en los 45 pacientes con PR se comportan de manera similar a lo comunicado por la literatura médica internacional y se llama la atención sobre este trastorno no pocas veces considerados sin trascendencia y que sin embargo, conlleva un alto riesgo de fenómenos tromboembólicos