Introduction: The COVID-19 pandemic changed the daily lives of university students and affected their mental health. The aim of this study was to assess the feelings and perceptions regarding the pandemic and teaching, and to identify the mental health symptoms perceived by pharmaceutical sciences students at a Brazilian public university.
Methods: This is a cross-sectional study with data triangulation (mixed-methods approach), conducted online with semiannual data collection from May 2020 to May 2021.
Bimetallic complexes have demonstrated a great ability to enhance the activity of monometallic systems for bond activation and catalysis. In this work, we explore the opposite approach: using a second metal to passivate the activity of another by reversible bimetallic inhibition. To do so we have synthesized a family of nine electrophilic gold complexes of formula Au(PR)(NTf) ([NTf] = [N(SOCF)]) that can act as inhibitors in the semihydrogenation of terminal and internal alkynes catalyzed by the iconic iridium Vaska complex IrCl(CO)(PPh).
View Article and Find Full Text PDFFront Endocrinol (Lausanne)
December 2024
[This corrects the article DOI: 10.3389/fendo.2024.
View Article and Find Full Text PDF[(L1)Au(μ-H)MCp][BF] complexes (M = Mo and W) featuring cavity-shaped tris-2-(4,4'-di--butylbi-phenylyl)phosphine (L1) have been isolated. The tungsten derivative showed a remarkably fast reactivity in photolytic hydride transfer to generate the mononuclear gold hydride (L1)AuH. Both bimetallic adducts trap Ag cations, forming unprecedented {Au(μ-H)M(μ-H)Ag} trimetallic assemblies with destabilized Au-M interactions.
View Article and Find Full Text PDFProc Natl Acad Sci U S A
January 2025
Camouflage is often considered a daytime phenomenon based on light and shade. Nocturnal camouflage can also occur, but its mechanistic basis remains unclear. Here, we analyze the conditions for background matching (BM) of avian predators against the night sky.
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