Notes

Surgery with regard to pancreatic growths amid COVID-19 pandemic.
To shorten the duration of x-ray pulses, we present a nonlinear optical technique using atoms with core-hole vacancies (core-hole atoms) generated by inner-shell photoionization. The weak Coulomb screening in the core-hole atoms results in decreased absorption at photon energies immediately above the absorption edge. By employing this phenomenon, referred to as saturable absorption, we successfully reduce the duration of x-ray free-electron laser pulses (photon energy 9.000 keV, duration 6-7 fs, fluence 2.0-3.5×10^5  J/cm^2) by ∼35%. This finding that core-hole atoms are applicable to nonlinear x-ray optics is an essential stepping stone for extending nonlinear technologies commonplace at optical wavelengths to the hard x-ray region.In this Letter we report an experiment that verifies an atomic-ensemble quantum memory via a measurement-device-independent scheme. A single photon generated via Rydberg blockade in one atomic ensemble is stored in another atomic ensemble via electromagnetically induced transparency. After storage for a long duration, this photon is retrieved and interfered with a second photon to perform a joint Bell-state measurement (BSM). The quantum state for each photon is chosen based on a quantum random number generator, respectively, in each run. By evaluating correlations between the random states and BSM results, we certify that our memory is genuinely entanglement preserving.Using Monte Carlo computer simulations, we study the impact of matter fields on the geometry of a typical quantum universe in the causal dynamical triangulations (cdt) model of lattice quantum gravity. The quantum universe has the size of a few Planck lengths and the spatial topology of a three-torus. The matter fields are multicomponent scalar fields taking values in a torus with circumference δ in each spatial direction, which acts as a new parameter in the cdt model. Changing δ, we observe a phase transition caused by the scalar field. This discovery may have important consequences for quantum universes with nontrivial topology, since the phase transition can change the topology to a simply connected one.We predict that photonic moiré patterns created by two mutually twisted periodic sublattices in quadratic nonlinear media allow the formation of parametric solitons under conditions that are strongly impacted by the geometry of the pattern. The question addressed here is how the geometry affects the joint trapping of multiple parametrically coupled waves into a single soliton state. We show that above the localization-delocalization transition the threshold power for soliton excitation is drastically reduced relative to uniform media. Also, the geometry of the moiré pattern shifts the condition for phase matching between the waves to the value that matches the edges of the eigenmode bands, thereby shifting the properties of all soliton families. Moreover, the phase-mismatch bandwidth for soliton generation is dramatically broadened in the moiré patterns relative to latticeless structures.We propose a Hamiltonian approach to reproduce the relevant elements of the centuries-old Subak irrigation system in Bali, showing a cluster-size distribution of rice-field patches that is a power-law with an exponent of ∼2. Besides this exponent, the resulting system presents two equilibria. The first originates from a balance between energy and entropy contributions. The second arises from the specific energy contribution through a local Potts-type interaction in combination with a long-range antiferromagnetic interaction without attenuation. Finite-size scaling analysis shows that, as a result of the second equilibrium, the critical transition balancing energy and entropy contributions at the Potts (local ferromagnetic) regime is absorbed by the transition driven by the global-antiferromagnetic interactions, as the system size increases. The phase transition balancing energy and entropy contributions at the global-antiferromagnetic regime also shows signs of criticality. Our study extends the Hamiltonian framework to a new domain of coupled human-environmental interactions.We probe photoinduced loss for chemically stable bosonic ^23Na^87Rb and ^23Na^39K molecules in chopped optical dipole traps, where the molecules spend a significant time in the dark. We expect the effective two-body decay to be significantly suppressed due to the small expected complex lifetimes of about 13 and 6  μs for ^23Na^87Rb and ^23Na^39K, respectively. However, instead we do not observe any suppression of the two-body loss in parameter ranges where large loss suppressions are expected. We believe these unexpected results are most probably due to drastic underestimation of the complex lifetime by at least 1-2 orders of magnitude.Interaction of an ultrastrong short laser pulse with nonprepolarized near-critical density plasma is investigated in an ultrarelativistic regime, with an emphasis on the radiative spin polarization of ejected electrons. Our particle-in-cell simulations show explicit correlations between the angle resolved electron polarization and the structure and properties of the transient quasistatic plasma magnetic field. While the magnitude of the spin signal is the indicator of the magnetic field strength created by the longitudinal electron current, the asymmetry of electron polarization is found to gauge the islandlike magnetic distribution which emerges due to the transverse current induced by the laser wave front. Our studies demonstrate that the spin degree of freedom of ejected electrons could potentially serve as an efficient tool to retrieve the features of strong plasma fields.Spatial and temporal factors are known to highly influence tactile perception, but their role has been largely unexplored in the case of two-dimensional (2D) pattern recognition. We investigated whether recognition is facilitated by the spatial and/or temporal separation of pattern elements, or by conditions known to favor perceptual integration, such as the ones eliciting apparent movement. 2D vibrotactile patterns were presented to the abdomen of novice participants. In Experiment 1, we manipulated the spatial (inter-tactor distance) and temporal (burst duration and inter-burst interval) parameters applied to the tracing mode (sequential activation of pattern elements). In Experiment 2, we compared display modes differing in their level of temporal overlap in the presentation of pattern elements the static mode (simultaneous activation of pattern elements), the slit-scan mode (pattern revealed line by line), and the tracing mode. The results of both experiments reveal that (a) recognition performance increases with the isolation of pattern elements in space and/or in time, (b) spatial and temporal factors interact in pattern recognition, and (c) conditions leading to apparent movement tend to be associated with lower recognition accuracy. These results further our understanding of tactile perception and provide guidance for the design of future vibrotactile communication systems. (PsycInfo Database Record (c) 2021 APA, all rights reserved).Despite a serious need for sustainable alternative water supplies in many parts of the world, public opposition remains a barrier to implementing solutions such as safe wastewater recycling schemes. Here, we compared two strategies to increase acceptance of recycled water default nudges and informing choices. Experiment 1 (N = 81) showed that defaults increased acceptance of recycled water. Experiment 2 (N = 142) replicated the effect but also indicated that weak educational interventions (simple infographics) interacted with confidence, such that those who switched from the default option had measurably higher confidence in their choice when given the infographic. Experiment 3 (N = 146) suggested that in a college undergraduate sample, strong educational interventions (educational videos) eliminated the effect of nudges on recycled water acceptance, increased acceptance, increased knowledge of recycled water, and also interacted with confidence in the same way observed in Experiment 2. Experiment 4 (N = 271) showed that strong educational interventions can also increase recycled water acceptance in an MTurk sample. Since both education and defaults may be effective, we suggest that future work would benefit from cost-benefit analyses between strategies. (PsycInfo Database Record (c) 2021 APA, all rights reserved).The world abounds with different perspectives, which necessitates balancing between maintaining the currently relevant perspective and flexibly switching between perspectives, if needed. RMC-4630 supplier Employing the distinction between reactive and proactive control (Braver, 2012), we argue that previous research on perspective-taking has mainly looked at the cost of activating reactive control to deal with what is happening now. Here we examine the cost of activating proactive control in order to be prepared for what might happen in the future. In three experiments, we embed a perspective-taking task (Samson et al., 2010) into a task-switching design and calculate perspective-mixing costs to capture proactive control. We show that a context in which perspective shifts might occur unpredictably (compared to a context in which such shifts are not expected) results in a poorer ability to maintain any perspective, but especially one's own. (PsycInfo Database Record (c) 2021 APA, all rights reserved).
In response to COVID-19 pandemic outbreak, healthcare procedures and modalities have changed considerably. Video calls may supply valid support for health care professionals, contributing to maintaining the communication between hospitalized patients and their families. The present study aimed to observe the experience of a group of respiratory therapists who conducted video calls between patients and their families in a COVID-19 unit.

Semistructured interviews (20-30 minutes duration) with the respiratory therapists who conducted the video calls in a COVID-19 unit in the North of Italy were performed. Participants joined the study voluntarily and, after receiving the informed consent, the interviews were audio-recorded. To better understand healthcare professionals' experience, the Interpretive Description methodology was adopted.

Seven respiratory therapists (three males, four females; mean age 45.1 ± 14.4) were recruited. Sixteen codes emerged from the analysis, constituting five primary themes Contact, Impact, Challenges, Centering, and Future.

The findings shed light on the usability of video calls during this emergency period and their potential for future implementation. Specifically, this type of call may bridge the distances in such periods of care and help professionals to emotionally support patients and caregivers. (PsycInfo Database Record (c) 2021 APA, all rights reserved).
The findings shed light on the usability of video calls during this emergency period and their potential for future implementation. Specifically, this type of call may bridge the distances in such periods of care and help professionals to emotionally support patients and caregivers. (PsycInfo Database Record (c) 2021 APA, all rights reserved).
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