Nanoscale Imaging of Electrically Driven Charge-Density Wave Phase Transitions.

Structural transformations in strongly correlated materials promise efficient and fast control of materials' properties via electrical or optical stimulation. The desired functionality of devices operating based on phase transitions, however, will also be influenced by nanoscale heterogeneity. Experimentally characterizing the relationship between microstructure and phase switching remains challenging, as nanometer resolution and high sensitivity to subtle structural modifications are required.

Probing the tunable multi-cone band structure in Bernal bilayer graphene.

Bernal bilayer graphene (BLG) offers a highly flexible platform for tuning the band structure, featuring two distinct regimes. One is a tunable band gap induced by large displacement fields. Another is a gapless metallic band occurring at low fields, featuring rich fine structure consisting of four linearly dispersing Dirac cones and van Hove singularities.

[Personality characteristics, eating habits and nutritional diagnosis. Study in adolescents with overweight and obesity in Monteros, Argentina].

Objective: To identify the relationships between the characteristics of the persona-lity, eating habits and the nutritional diagnosis of school-age adolescents of Monteros, Tucumán, Argentina.

Material And Method: A quantitative, cross-sectional comparative study was conducted with a non-probabilistic sample of 172 adolescents (average age = 13,57 ± 1,074). Individual measurements of weight and height were taken to calculate the body mass index and divided into two groups: clinical (overweight / obese) and control (normal weight).

Acute Effect of Cognitive Compromise during Physical Exercise on Self-Regulation in Early Childhood Education.

Self-regulation (SR) in pre-schoolers is a strong predictor of different aspects of mental health and wellbeing. However, SR only recently has been examined concerning physical activity and its effects on cognitive performance. In the present study, 49 preschool children aged 4-5 years were submitted to classroom movement breaks (CMBs) of 15-min with different degrees of difficulty.

Toward Plasmonic Tunnel Gaps for Nanoscale Photoemission Currents by On-Chip Laser Ablation.

We demonstrate that prestructured metal nanogaps can be shaped on-chip to below 10 nm by femtosecond laser ablation. We explore the plasmonic properties and the nonlinear photocurrent characteristics of the formed tunnel junctions. The photocurrent can be tuned from multiphoton absorption toward the laser-induced strong-field tunneling regime in the nanogaps.

Electrically Evoked Auditory Brainstem Response over Round Window by Bipolar Stimulation.

Objectives: Auditory brainstem potentials can be elicited by electrical stimulation of the round window (RW). In this technique, extracochlear stimulation is objectively used in the selection of cochlear implant (CI) candidates to avoid cochlear damage. However, until now, its use is limited due to the large artifacts generated by electrical stimulation.

House sparrow biomarkers as lead pollution bioindicators. Evaluation of dose and exposition length on hematological and oxidative stress parameters.

House sparrows (Passer domesticus) have been proposed as a key ecological indicator of urban pollution. Remarkably, we lack knowledge about the physiological effects of lead on this bird species. Therefore, this study was aimed to evaluate the effect of Pb on several physiological parameters in house sparrows exposed to environmental Pb concentrations.

Inflammatory pseudotumor of the tonsil.

Inflammatory pseudotumor is an unusual benign but potentially invasive lesion. In the head and neck area, it mainly involves the orbit and paranasal sinuses. We present a case in tonsil and neck.