Original Article Influence of Smoking Consumption and Nicotine Dependence Degree in Cardiac Autonomic Modulation

Abstract Background: Smoking consumption alters cardiac autonomic function

Influence of Smoking Consumption and Nicotine Dependence Degree in Cardiac Autonomic Modulation

Abstract Background: Smoking consumption alters cardiac autonomic function

Production of He-4 and (4) in Pb-Pb collisions at root(NN)-N-S=2.76 TeV at the LHC

Results on the production of He-4 and (4) nuclei in Pb-Pb collisions at root(NN)-N-S = 2.76 TeV in the rapidity range vertical bar y vertical bar <1, using the ALICE detector, are presented in this paper. The rapidity densities corresponding to 0-10% central events are found to be dN/dy4(He) = (0.8 +/- 0.4 (stat) +/- 0.3 (syst)) x 10(-6) and dN/dy4 = (1.1 +/- 0.4 (stat) +/- 0.2 (syst)) x 10(-6), respectively. This is in agreement with the statistical thermal model expectation assuming the same chemical freeze-out temperature (T-chem = 156 MeV) as for light hadrons. The measured ratio of (4)/He-4 is 1.4 +/- 0.8 (stat) +/- 0.5 (syst). (C) 2018 Published by Elsevier B.V.Peer reviewe

Thermal behavior of hafnium-based ultrathin films on silicon

We report here on the thermodynamical stability of ultrathin, hafnium-based dielectric films, namely hafnium oxide (HfO2), silicate (HfSixOy), and aluminum silicate (AlHfxSiyOz), deposited on silicon. These materials are promising candidates to replace the well established silicon oxide and oxynitride as gate dielectric materials in advanced Si-based complementary metal–oxide– semiconductor technology. Since there are mandatory requirements on the gate dielectric material, hafnium oxide is currently being modified, by adding silicon and aluminum into the matrix, increasing its thermal stability, and improving its electrical properties. Diffusion-reaction during thermal processing was investigated using isotopic substitution together with ion beam techniques such as Rutherford backscattering spectrometry, narrow nuclear resonance profiling, and nuclear reaction analysis. The chemical changes in the films were accessed by x-ray photoelectron spectroscopy

Thermal behavior of hafnium-based ultrathin films on silicon

We report here on the thermodynamical stability of ultrathin, hafnium-based dielectric films, namely hafnium oxide (HfO2), silicate (HfSixOy), and aluminum silicate (AlHfxSiyOz), deposited on silicon. These materials are promising candidates to replace the well established silicon oxide and oxynitride as gate dielectric materials in advanced Si-based complementary metal–oxide– semiconductor technology. Since there are mandatory requirements on the gate dielectric material, hafnium oxide is currently being modified, by adding silicon and aluminum into the matrix, increasing its thermal stability, and improving its electrical properties. Diffusion-reaction during thermal processing was investigated using isotopic substitution together with ion beam techniques such as Rutherford backscattering spectrometry, narrow nuclear resonance profiling, and nuclear reaction analysis. The chemical changes in the films were accessed by x-ray photoelectron spectroscopy

Cultura del gesto e cultura della parola. Viaggio antropologico nel mondo dei sordi

Un libro che ha visto la luce nel 1997 (in ristampa nel 2023 con una nuova introduzione) , nato da un’iniziativa di studenti di antropologia della Sapienza di Roma, ripubblicato con una nuova introduzione che fa il punto degli studi sociali sulla sordità in Italia. Studi che in questi anni hanno preso meno piede rispetto alla ricerca linguistica sulla Lingua dei Segni Italiana (LIS), che vanta invece oggi una notevole letteratura. Una lingua che nel 2021 ha finalmente, dopo anni di battaglie da parte delle persone sorde, ottenuto il riconoscimento ufficiale della Repubblica con Legge 21 maggio 2021, n. 69. Una serie di riflessioni immaginate come un viaggio alla scoperta del mondo della sordità intesa “non come difetto fisico, una menomazione corporea da curare o mascherare, ma una risorsa umana generatrice di cultura”. Viaggio che come studenti ritenevamo fosse l’anima di ogni ricerca antropologica nel viaggio della conoscenza di noi stessi e dell’altro.A book published in 1997 (reprinted in 2023 with a new introduction), born from an initiative of anthropology students of the Sapienza University of Rome, republished with a new introduction that takes stock of social studies on deafness in Italy. Studies that in recent years have gained less ground than the linguistic research on Italian Sign Language (LIS), which today boasts a considerable literature. A language that in 2021 finally, after years of battles by deaf people, obtained official recognition from the State (Law 21 May 2021, n. 69). A series of reflections imagined as a journey to discover the world of deafness understood "not as a physical defect, a bodily impairment to be treated or masked, but a human resource that generates culture". A journey that as students we believed was the soul of every anthropological research on the path of knowledge of ourselves and of the other

Influence of Smoking Consumption and Nicotine Dependence Degree in Cardiac Autonomic Modulation

Abstract Background: Smoking consumption alters cardiac autonomic function. Objective: Assess the influence of the intensity of smoking and the nicotine dependence degree in cardiac autonomic modulation evaluated through index of heart rate variability (HRV). Methods: 83 smokers, of both genders, between 50 and 70 years of age and with normal lung function were divided according to the intensity of smoking consumption (moderate and severe) and the nicotine dependency degree (mild, moderate and severe). The indexes of HRV were analyzed in rest condition, in linear methods in the time domain (TD), the frequency domain (FD) and through the Poincaré plot. For the comparison of smoking consumption, unpaired t test or Mann-Whitney was employed. For the analysis between the nicotine dependency degrees, we used the One-way ANOVA test, followed by Tukey's post test or Kruskal-Wallis followed by Dunn's test. The significance level was p < 0,05. Results: Differences were only found when compared to the different intensities of smoking consumption in the indexes in the FD. LFun (62.89 ± 15.24 vs 75.45 ± 10.28), which corresponds to low frequency spectrum component in normalized units; HFun (37.11 ± 15.24 vs 24.55 ± 10.28), which corresponds to high frequency spectrum component in normalized units and in the LF/HF ratio (2.21 ± 1.47 vs 4.07 ± 2.94). However, in the evaluation of nicotine dependency, significant differences were not observed (p > 0.05). Conclusion: Only the intensity of smoking consumption had an influence over the cardiac autonomic modulation of the assessed tobacco smokers. Tobacco smokers with severe intensity of smoking consumption presented a lower autonomic modulation than those with moderate intensity

Informe final del proyecto: Origen y evolución de la inversión de roles sexuales en arañas lobo de la subfamilia Allocosinae en Sudamérica

Las arañas lobo Allocosa senex y Allocosa marindia que habitan las costas del sur de Sudamérica presentan características comportamentales y morfológicas únicas en arañas. A diferencia de lo extendido en este grupo, las hembras son el sexo móvil que sale en busca de pareja e inicia el cortejo y los machos poseen un mayor tamaño corporal que las hembras. Existen diversas hipótesis sobre las causas de la aparición y mantenimiento de estos comportamientos atípicos para el grupo, una de las cuales estaría relacionada con el tipo de ambiente que habitan. En este contexto, estudiamos otras especies del grupo, integrando información genética, taxonómica, morfométrica, ambiental y comportamental, para investigar cuáles son las presiones que originan y modelan la inversión de roles sexuales de estas arañas en Sudamérica. Encontramos que: i) la subfamilia presenta una mayor diversidad a la que se conocía, se describen nuevos géneros y especies para la ciencia; ii) hay nuevos casos con machos más grandes que las hembras que viven en ambientes de arenales costeros y están cercanamente emparentados con A. senex y A. marindia; iii) en un grupo de arañas encontradas en arenales de costas volcánicas, los machos son más activos que las hembras durante la noche, a diferencia de lo reportado en A. senex y A. marindia; y al igual que éstas especies presenta características del comportamiento relacionadas a la inversión de roles sexuales; iv) no todas las especies asociadas a ambientes de arenales costeros presentan inversión del dimorfismo sexual de tamaño, v) el tamaño corporal de los individuos varía según el microambiente; vi) hay diferencias entre los ambientes y la actividad de superficie nocturna de machos y hembras. Surgen nuevas preguntas para futuros estudios para seguir entendiendo sobre los factores que modelan las características únicas y llamativas reportadas en especies de nuestro país.Agencia Nacional de Investigación e Innovació

Informe final del proyecto: Origen y evolución de la inversión de roles sexuales en arañas lobo de la subfamilia Allocosinae en Sudamérica

Las arañas lobo Allocosa senex y Allocosa marindia que habitan las costas del sur de Sudamérica presentan características comportamentales y morfológicas únicas en arañas. A diferencia de lo extendido en este grupo, las hembras son el sexo móvil que sale en busca de pareja e inicia el cortejo y los machos poseen un mayor tamaño corporal que las hembras. Existen diversas hipótesis sobre las causas de la aparición y mantenimiento de estos comportamientos atípicos para el grupo, una de las cuales estaría relacionada con el tipo de ambiente que habitan. En este contexto, estudiamos otras especies del grupo, integrando información genética, taxonómica, morfométrica, ambiental y comportamental, para investigar cuáles son las presiones que originan y modelan la inversión de roles sexuales de estas arañas en Sudamérica. Encontramos que: i) la subfamilia presenta una mayor diversidad a la que se conocía, se describen nuevos géneros y especies para la ciencia; ii) hay nuevos casos con machos más grandes que las hembras que viven en ambientes de arenales costeros y están cercanamente emparentados con A. senex y A. marindia; iii) en un grupo de arañas encontradas en arenales de costas volcánicas, los machos son más activos que las hembras durante la noche, a diferencia de lo reportado en A. senex y A. marindia; y al igual que éstas especies presenta características del comportamiento relacionadas a la inversión de roles sexuales; iv) no todas las especies asociadas a ambientes de arenales costeros presentan inversión del dimorfismo sexual de tamaño, v) el tamaño corporal de los individuos varía según el microambiente; vi) hay diferencias entre los ambientes y la actividad de superficie nocturna de machos y hembras. Surgen nuevas preguntas para futuros estudios para seguir entendiendo sobre los factores que modelan las características únicas y llamativas reportadas en especies de nuestro país.Agencia Nacional de Investigación e Innovació