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Work-family interface during COVID-19: a sociolinguistic study of working mums’ identity and mental health
Get PDFBackground
The dramatic reconfigurations of work-family roles and social boundaries resulting from the social restrictions imposed during the Covid-19 pandemic led working mums to look for online sites as spaces of emotional support and regulation where they could vent their emotions, share their concerns and griefs, and seek advice. They also became interactional spaces where mums’ relevant identities were reassessed and enacted as they aimed to balance work-family roles and improve their wellbeing. The paper explores how working mums discursively negotiated their multiple identities in an online support forum during times of global struggle, how these identity constructions reflect the domains of Work-Family Conflict (WFC) and how working mums perceived these identities are related to their mental health.
Methods
127 posts of Chilean working mums published in a public online support forum for working mums collected during the first half of 2020 were analysed in three phases. The first one involved a thematic analysis to identify themes and subthemes related to working mums’ identity construction in the data. The second phase involved conducting a narrative analysis of working mums’ microstorias in order to identify a master narrative crafted by these working mums, and contesting and conforming ideologies of motherhood, among others. Finally, the third phase involved a fine-grained discourse analysis of the most representative extracts illustrating working mums’ identity negotiation.
Results
The sociolinguistic analysis showed that working mums’ discourses displayed three themes of self-reflection, namely, diminishing self-care, reassessing their self, and enhancing self through self-care. Identity-related sub-themes for each main theme are discussed and discursively analysed. Two main points are emphasised: (1) the identity that was most salient in working mums’ discourse was their personal identity (rather than work-family roles and identities), and (2) microstorias allowed working mums to challenge the hegemonic power of dominant discourses around their identities and their work-family roles.
Conclusions
The study shows that a sociolinguistic approach to the exploration of working mums’ identity negotiation is useful to highlight the ways in which mums contest binary assumptions of work-family roles and the need to reconsider working mums’ life domains so that they reflect working mums’ actual identity needs and lived experiences. Future lines of research are outlined
The TESS-Keck Survey. XVIII. A Sub-Neptune and Spurious long-period signal in the TOI-1751 system
Get PDFWe present and confirm TOI-1751 b, a transiting sub-Neptune orbiting a slightly evolved, solar-type, metal-poor star (Teff = 5996 ± 110 K, log(g)=4.2 + 0.1, V = 9.3 mag, [Fe/H] = −0.40 ± 0.06 dex) every 37.47 days. We use TESS photometry to measure a planet radius of 2.77-0.07+0.15 R. We also use both Keck/HIRES and APF/Levy radial velocities (RV) to derive a planet mass of 14.5-3.14+3.15M, and thus a planet density of 3.6 ± 0.9 g cm−3. There is also a long-period (∼400 days) signal that is observed in only the Keck/HIRES data. We conclude that this long-period signal is not planetary in nature and is likely due to the window function of the Keck/HIRES observations. This highlights the role of complementary observations from multiple observatories to identify and exclude aliases in RV data. Finally, we investigate the potential compositions of this planet, including rocky and water-rich solutions, as well as theoretical irradiated ocean models. TOI-1751 b is a warm sub-Neptune with an equilibrium temperature of ∼820 K. As TOI-1751 is a metal-poor star, TOI-1751 b may have formed in a water-enriched formation environment. We thus favor a volatile-rich interior composition for this planet
Autonomous sensor system for low-capacity wind turbine blade vibration measurement
Get PDFThis paper presents the design, implementation, and validation of an on-blade sensor system for remote vibration measurement for low-capacity wind turbines. The autonomous sensor system was deployed on three wind turbines, with one of them operating in harsh weather conditions in the far south of Chile. The system recorded the acceleration response of the blades in the flapwise and edgewise directions, data that could be used for extracting the dynamic characteristics of the blades, information useful for damage diagnosis and prognosis. The proposed sensor system demonstrated reliable data acquisition and transmission from wind turbines in remote locations, proving the ability to create a fully autonomous system capable of recording data for monitoring and evaluating the state of health of wind turbine blades for extended periods without human intervention. The data collected by the sensor system presented in this study can serve as a foundation for developing vibration-based strategies for real-time structural health monitoring
Photometry of the Didymos System across the DART impact apparition
Get PDFOn 2022 September 26, the Double Asteroid Redirection Test (DART) spacecraft impacted Dimorphos, the satellite of binary near-Earth asteroid (65803) Didymos. This demonstrated the efficacy of a kinetic impactor for planetary defense by changing the orbital period of Dimorphos by 33 minutes. Measuring the period change relied heavily on a coordinated campaign of lightcurve photometry designed to detect mutual events (occultations and eclipses) as a direct probe of the satellite’s orbital period. A total of 28 telescopes contributed 224 individual lightcurves during the impact apparition from 2022 July to 2023 February. We focus here on decomposable lightcurves, i.e., those from which mutual events could be extracted. We describe our process of lightcurve decomposition and use that to release the full data set for future analysis. We leverage these data to place constraints on the postimpact evolution of ejecta. The measured depths of mutual events relative to models showed that the ejecta became optically thin within the first ∼1 day after impact and then faded with a decay time of about 25 days. The bulk magnitude of the system showed that ejecta no longer contributed measurable brightness enhancement after about 20 days postimpact. This bulk photometric behavior was not well represented by an HG photometric model. An HG1G2 model did fit the data well across a wide range of phase angles. Lastly, we note the presence of an ejecta tail through at least 2023 March. Its persistence implied ongoing escape of ejecta from the system many months after DART impact
Synthesis, characterization, and FDTD simulations of Ag-enriched RGO nanosheets for catalytic reduction of 4-nitrophenol
Get PDFReduced graphene oxide-based nanocomposites are eminent materials having diverse applications including environmental remediation. The present work emphasizes the facile one-step co-reduction method for synthesizing silver nanoparticle (Ag NPs) decorated reduced graphene oxide (RGO) for catalytic reduction of 4-nitrophenol. FDTD simulation studies justify the experimental results, and XRD studies confirmed the reduction of graphene oxide and the formation of Ag NPs with reduced graphene oxide (AgRGO) composite. Raman analysis complements the structure, crystallinity, and defects in the fabricated material. XPS analysis verifies the reduction of graphene oxide (GO) into RGO and the decoration of metallic Ag on the surface of RGO. FESEM image showed the decoration of Ag NPs on the surface of RGO. AgRGO exhibited appreciable catalytic performance for reducing 4-nitrophenol in the presence of sodium borohydride compared to GO and RGO
Importancia de la revisión por pares en la construcción del conocimiento: una mirada desde la Revista Española de Nutrición Humana y Dietética
No full textJurisprudent commentary: Effects of the approval of the reorganization agreement regarding the secured creditor with personal cautions who voted against the proposed agreement. Notes regarding two recent judgments
Get PDFEl presente trabajo está dedicado a comentar críticamente dos sentencias, relativamente recientes, dictadas por la Primera Sala de la Excma. Corte Suprema, sobre los efectos que produce la aprobación del acuerdo de reorganización respecto del acreedor garantizado con cauciones personales que votó en contra de la propuesta de acuerdo. Lo anterior resulta de especial interés, atendida la omisión del legislador en relación a los efectos que se producen respecto del acreedor garantizado que, manifestando su voto, lo hace en contra de la propuesta de acuerdo de reorganización
Carbon Dots: A multifunctional nano-sized giant tool forthe detection probe and physical reformation of NiMoO 4 inSolid-State for enriched energy storage application
No full textDesigning low-cost, effective and greener materials via a non-sophisticated strategy is most important for future research. Here, they made a new dual endeavor using carbon dots (CDs) as an environment protection probe for selective detection of environmental toxins, followed by the solid-state structural reformer to prepare NiMoO4 (NM) via mechanochemical-based solid grinding method. The prepared CDs, NM and NM-CDs combination is examined through various techniques. The prepared CDs selectively detect Cr6+, Ru3+, and Doxycycline independently. Also, in this work, a groundbreaking strategy is found to prepare morphology-tailored NM using CDs through a solid-state grinding method without adding any other toxic solvents or reagents. The CDs-induced NM-CDs (15) look like a 2D nano-sheet with enriched surface area compared to its bare NM. The fabricated electrode provides the highest capacitance value of 1947 F g−1, almost three times grander than the bare 1D rod-like electrode. Then, fabricated asymmetric supercapacitor NM-CDs (15)//AC system delivers a high energy density of 43.9 Wh Kg−1 at a power density of 684 W Kg−1. Overall, a single CDs serve multiple roles in the environment and energy applications with a greener structure tailoring agent and a better booster for re energy storage properties
Fire ecology in marine systems
No full textWildfire byproducts enter into the oceans via terrestrial and atmospheric routes. They pose a challenge to the sustainability of marine ecosystems, especially under the current increase in fire activity. Research is needed to unravel the dynamics between wildfires and marine life, and the oceans’ potential to mitigate wildfire emissions