Interoceptive sensibility: links with insomnia symptoms, anxiety, and depression in the general population.

Background: Diurnal and nocturnal symptoms of insomnia are strongly associated with anxiety and depression. Interoception provides a new reading window for understanding the development and maintenance of psychopathology and sleep disorders. While previous studies have provided preliminary insights into the relationships between depression, anxiety, insomnia, and interoceptive sensibility, to our knowledge, no study has comprehensively examined these relationships.

Work and efficiency fluctuations in a quantum Otto cycle with idle levels.

We study the performance of a quantum Otto heat engine with two spins coupled by a Heisenberg interaction, taking into account not only the mean values of work and efficiency but also their fluctuations. We first show that, for this system, the output work and its fluctuations are directly related to the magnetization and magnetic susceptibility of the system at equilibrium with either heat bath. We analyze the regions where the work extraction can be done with low relative fluctuation for a given range of temperatures, while still achieving an efficiency higher than that of a single spin system heat engine.

()-2-(4-ethoxybenzylidene)-3,4-dihydro--naphthalen-1-one single crystal: Synthesis, growth, crystal structure, spectral characterization, biological evaluation and binding interactions with SARS-CoV-2 main protease.

A new α-Tetralone based chalcone compound, (2E)-2-(4-ethoxybenzylidene)-3,4-dihydro-2H-naphthalen-1-one () has been synthesized by Claisen-Schmidt condensation reaction of α-Tetralone () with 4-Ethoxybenzaldehyde () in basic medium. Then it was allowed to grow through slow evaporation solution growth technique. The molecular structure of grown has been systematically characterized by SCXRD, FT-IR, H NMR and C NMR spectroscopic studies.

Optical computing of quantum revivals.

Interference is the mechanism through which waves can be structured into the most fascinating patterns. While for sensing, imaging, trapping, or in fundamental investigations, structured waves play nowadays an important role and are becoming the subject of many interesting studies. Using a coherent optical field as a probe, we show how to structure light into distributions presenting collapse and revival structures in its wavefront.

Nonadiabatic coupled-qubit Otto cycle with bidirectional operation and efficiency gains.

We study a quantum Otto cycle that uses a 2-qubit working substance whose Hamiltonian does not commute with itself at different times during unitary strokes. We investigate how the cycle responds to the loss of quantum adiabaticity when these strokes are operated with a finite duration. We find that qualitative features such as the possibility of counter-rotating cycles operating as heat engines, or a cycle efficiency that can increase with a decrease in the temperature difference between the baths, are resilient even to highly nonadiabatic strokes.