Sleep/wake rhythm modifications in the Italian population during SARS-CoV2 pandemic: a web-based cross-sectional survey.

Abstract. – OBJECTIVE: The study aims to investigate in a representative sample of the Italian population whether the SARS-CoV2 pandemic and the subsequent home isolation had repercussion on the daily sleep/wake cycling and habits. MATERIALS AND METHODS: A web-based cross-sectional survey consisted of various multiple-choice questions concerning demographic characteristics, sleep habits, and sleep-related problems was broadcast through mainstream social-media. Individuals were randomly allowed to participate from April 29th to May 17th, namely 50 days after the lockdown imposition and the day before its abrogation. RESULTS: 58.84% of respondents experienced a change in their sleep habits. 71% of those whose sleep changed showed a delayed sleep pattern. Overall, a two-fold risk of delayed sleep pattern without any change in total sleep time emerged during the investigation period. Females emerged almost 2 times more likely to modify their sleep habits than males. Youths were also more likely to experience modifications than old people, who conversely appeared protected. A significant improvement in daytime sleepiness occurred during the home isolation which additionally correlated with delayed bedtime and less sleep time. CONCLUSIONS: A high rate of change in sleep habits, especially among youths and females, occurred in Italian population during the home isolation to limit the SARS-CoV2 pandemic. Moreover, self-reported daytime sleepiness decreased in severity

Submillimeter observations of OH and CH in M42

The (sup 2) pi sub 1/2 (J = 3/2 to 1/2) transitions of OH at 163.12 and 163.40 micro m have been detected and upper limits have been obtained for the (sup 2) pi sub 3/2 (J = 3/2 to 1/2) transitions of CH at 149.09 and 149.39 micro m, in observations of the Kleinmann-Low Nebula of Orion. All four flux levels lie between 1 and 1.2 x 10 to the 17th power/sq.cm. The OH lines are bright when compared to the lower, (sup 2) pi sub 3/2 (J = 5/2 to 3/2) fluxes reported and imply that the 119 micro m emission observed is partially self-absorbed. The combined results provide strong constraints. Taken together with existing data on molecular hydrogen and CO and recent data on other OH transition, they suggest OH emission from post-shock regions at temperatures T approx 1000 k, densities approx. 7 x 10 to the 6th powr/cu cm N sub OH approx 80/cu cm optically thick for the (sup 2) pi sub 3/2 (J = 5/2 to 3/2), 119 micro m but only partially self-absorbing in the (J = 7/2 to 3/2), 84 micro m transitions over a Doppler velocity bandwidth of 30 km/sec. The OH column density is N sub OH approx 4 x 10 to the 16th powr/sq cm. in the emitting regions which occupy a fraction of approx 0.1 of a 1' x 1' field of view centered on the Becklin-Neugebauer source. The CO (J = 31 to 30), 84 micro m transition appears to lie sufficiently close to one of the 84 micro m OH line components to be partially absorbed as well, through a Bowen-type mechanism

Observations on midgut of Apis mellifera workers (Hymenoptera: Apoidea) under controlled acute exposures to a Bacillus thuringiensis-based biopesticide

International audienceAbstractMorphostructural investigations have been carried out on Apis mellifera workers treated with single controlled acute exposures to a biopesticide containing Bacillus thuringiensis (Bt), to detect midgut changes until 96 h. Our findings show concentration-dependence of these changes, reflecting in different degrees on both mortality and behaviour. In particular, some midgut changes are also found 96 h after treatment. Our results show that the tested product does not affect survival at presumable environmental concentrations, so confirming the lesser toxicity of Bt-based biopesticides compared to other pesticides. However, in the light of the discovered long-term changes, we discuss the opportunity of taking into account possible chronic exposures to Bt-based products on A. mellifera

Observations of far-infrared transitions between excited states of OH

In observations of the Kleinmann-Low Nebula were detected of Orion 84.42 and 84.60 micron transitions between the P-2 sub 3/2 and Pi-2 sub 3/2 (J = 5/2) levels of OH with respective fluxes of 1.0 + or - 0.3 to the minus 17th power and 1.4 + or - 0.4 x 10 to the minus 17th power W cm/sq. When compared to 119 micron flux levels of OH and 153 micron flux levels of these radicals by Viscuso, these results suggest appreciable self-absorption of OH line radiation within the Nebula. It is probable that the CO emission due to the J = 31 yields 30 rotational transition at 84.411 micron makes a substantial contribution to the observed 84.42 micron flux, and that it also is at least partially absorbed at the 84.42 micron OH transition frequency. The 88.55 and 88.78 micron (J = 9/2 to 7/2) transitions of CH also were sought, but yielded only to upper limits of 3 x 10 to the minus 18th power W /sq cm each. A search of W3-IRS5 yields upper limits to the 84.42 micron OH and 87.19 micron CO (J = 30 to 29) transitions of 2 x 10 minus 18th power W cm/2

Aplicaciones médico-quirúrgicas de la anatomía ósea del seno frontal en relación al trauma cráneo facial

Los senos frontales son dos cavidades en forma de pirámide triangular, de vértice superior y base inferior, a cada lado de la línea media y excavados en el espesor de este hueso. La anatomía y morfología de los senos frontales se utiliza desde hace años en la medicina forense para la identificación de cadáveres dada su gran versatilidad. En lo que respecta a la cirugía maxilofacial es de suma importancia la presencia de megasenos frontales en el diagnóstico y tratamiento de fracturas hundimiento por ruptura de la tabla externa ante trauma de dicha región, observándose la presencia de las mismas ante patrones de senos anormalmente desarrollados.Facultad de Ciencias Médica

Aplicaciones médico-quirúrgicas de la anatomía ósea del seno frontal en relación al trauma cráneo facial

Los senos frontales son dos cavidades en forma de pirámide triangular, de vértice superior y base inferior, a cada lado de la línea media y excavados en el espesor de este hueso. La anatomía y morfología de los senos frontales se utiliza desde hace años en la medicina forense para la identificación de cadáveres dada su gran versatilidad. En lo que respecta a la cirugía maxilofacial es de suma importancia la presencia de megasenos frontales en el diagnóstico y tratamiento de fracturas hundimiento por ruptura de la tabla externa ante trauma de dicha región, observándose la presencia de las mismas ante patrones de senos anormalmente desarrollados.Facultad de Ciencias Médica

Punto sutural astérico y su relación con los huesos supernumerarios

El presente trabajo tiene como objetivo proporcionar datos referentes a la frecuencia de aparición y variabilidad de los huesos supernumerarios localizados en el punto sutural astérico.Facultad de Ciencias Médica

Aplicaciones médico-quirúrgicas de la anatomía ósea del seno frontal en relación al trauma cráneo facial

Los senos frontales son dos cavidades en forma de pirámide triangular, de vértice superior y base inferior, a cada lado de la línea media y excavados en el espesor de este hueso. La anatomía y morfología de los senos frontales se utiliza desde hace años en la medicina forense para la identificación de cadáveres dada su gran versatilidad. En lo que respecta a la cirugía maxilofacial es de suma importancia la presencia de megasenos frontales en el diagnóstico y tratamiento de fracturas hundimiento por ruptura de la tabla externa ante trauma de dicha región, observándose la presencia de las mismas ante patrones de senos anormalmente desarrollados.Facultad de Ciencias Médica

SOFIA observations of far-infrared hydroxyl emission toward classical ultracompact HII/OH maser regions

The hydroxyl radical (OH) is found in various environments within the interstellar medium (ISM) of the Milky Way and external galaxies, mostly either in diffuse interstellar clouds or in the warm, dense environments of newly formed low-mass and high-mass stars, i.e, in the dense shells of compact and ultracompact HII regions (UCHIIRs). Until today, most studies of interstellar OH involved the molecule's radio wavelength hyperfine structure (hfs) transitions. These lines are generally not in LTE and either masing or over-cooling complicates their interpretation. In the past, observations of transitions between different rotational levels of OH, which are at far-infrared wavelengths, have suffered from limited spectral and angular resolution. Since these lines have critical densities many orders of magnitude higher than the radio wavelength ground state hfs lines and are emitted from levels with more than 100 K above the ground state, when observed in emission, they probe very dense and warm material. We probe the warm and dense molecular material surrounding the UCHIIR/OH maser sources W3(OH), G10.62-0.39 and NGC 7538 IRS1 by studying the $^2\Pi_{{1/2}}, J = {3/2} - {1/2}$ rotational transition of OH in emission and, toward the last source also the molecule's $^2\Pi_{3/2}, J = 5/2 - 3/2$ ground-state transition in absorption. We used the Stratospheric Observatory for Infrared Astronomy (SOFIA) to observe these OH lines, which are near 1.84 THz ($163 \mu$m) and 2.51 THz ($119.3 \mu$m). We clearly detect the OH lines, some of which are blended with each other. Employing non-LTE radiative transfer calculations we predict line intensities using models of a low OH abundance envelope versus a compact, high-abundance source corresponding to the origin of the radio OH lines.Comment: Accepted for publication in A&A (SOFIA/GREAT special issue

Arbotantes de la mandíbula: modelo anatómico para comprender la patología traumática

Con el presente trabajo, se pretende enfatizar la importancia de la anatomía como ciencia básica en el estudio de traumatismos faciales.Facultad de Ciencias Médica