From blue star-forming to red passive: galaxies in transition in different environments

Exploiting a mass complete (M_*>10^(10.25)M_sun) sample at 0.03<z<0.11 drawn from the Padova Millennium Galaxy Group Catalog (PM2GC), we use the (U-B)_rf color and morphologies to characterize galaxies, in particular those that show signs of an ongoing or recent transformation of their star formation activity and/or morphology - green galaxies, red passive late types, and blue star-forming early types. Color fractions depend on mass and only for M_*<10^(10.7)M_sun on environment. The incidence of red galaxies increases with increasing mass, and, for M_*<10^(10.7)M_sun, decreases toward the group outskirts and in binary and single galaxies. The relative abundance of green and blue galaxies is independent of environment, and increases monotonically with galaxy mass. We also inspect galaxy structural parameters, star-formation properties, histories and ages and propose an evolutionary scenario for the different subpopulations. Color transformations are due to a reduction and suppression of SFR in both bulges and disks which does not noticeably affect galaxy structure. Morphological transitions are linked to an enhanced bulge-to-disk ratio due to the removal of the disk, not to an increase of the bulge. Our modeling suggests that green colors might be due to star formation histories declining with long timescales, as an alternative scenario to the classical "quenching" processes. Our results suggest that galaxy transformations in star formation activity and morphology depend neither on environment nor on being a satellite or the most massive galaxy of a halo. The only environmental dependence we find is the higher fast quenching efficiency in groups giving origin to post-starburst signatures.Comment: 20 pages, 12 figures, accepted for publication in Ap

The star formation history of galaxies: the role of galaxy mass, morphology and environment

We analyze the star formation history (SFH) of galaxies as a function of present-day environment, galaxy stellar mass and morphology. The SFH is derived by means of a non-parametric spectrophotometric model applied to individual galaxies at z ~ 0.04- 0.1 in the WINGS clusters and the PM2GC field. The field reconstructed evolution of the star formation rate density (SFRD) follows the values observed at each redshift (Madau & Dickinson 2014), except at z > 2 where our estimate is ~ 1.7x higher than the high-z observed value. The slope of the SFRD decline with time gets progressively steeper going from low mass to high mass haloes. The decrease of the SFRD since z = 2 is due to 1) quenching - 50% of the SFRD in the field and 75% in clusters at z > 2 originated in galaxies that are passive today - and 2) the fact that the average SFR of today's star-forming galaxies has decreased with time. We quantify the contribution to the SFRD(z) of galaxies of today's different masses and morphologies. The current morphology correlates with the current star formation activity but is irrelevant for the past stellar history. The average SFH depends on galaxy mass, but galaxies of a given mass have different histories depending on their environment. We conclude that the variation of the SFRD(z) with environment is not driven by different distributions of galaxy masses and morphologies in clusters and field, and must be due to an accelerated formation in high mass haloes compared to low mass ones even for galaxies that will end up having the same galaxy mass today.Comment: 16 pages, 10 figures. Published on MNRA

Oral magnesium supplementation improves endothelial function and attenuates subclinical atherosclerosis in thiazide-treated hypertensive women

Background: Epidemiological studies demonstrate an inverse association between serum magnesium and incidence of cardiovascular disease. Diuretics commonly cause hypomagneseamia. Method: We evaluated effects of magnesium supplementation on blood pressure (BP) and vascular function in thiazide-treated hypertensive women in a randomized, double-blind, clinical trial. Hypertensive women (40–65 years) on hydrochlorothiazide and mean 24-h BP at least 130/80 mmHg were divided into placebo and supplementation (magnesium chelate 600 mg/day) groups. Patients were evaluated for nutritional and biochemical parameters, office and ambulatory blood pressure monitoring, brachial flow-mediated dilatation (FMD), peripheral arterial tonometry, assessment of carotid intima–media thickness, central hemodynamic parameters and pulse wave velocity at inclusion and after 6-month follow-up. Results: The magnesium group had a significant reduction in SBP (144 ± 17 vs. 134 ± 14 mmHg, P = 0.036) and DBP (88 ± 9 vs. 81 ± 8 mmHg, P = 0.005) at 6 months, without effect on plasma glucose, lipids, or arterial stiffness parameters. The placebo group showed a significant increase in carotid intima-media thickness (0.78 ± 0.13 vs. 0.89 ± 0.14 mm, P = 0.033) without change in the magnesium group (0.79 ± 0.16 vs. 0.79 ± 0.19 mm, P = 0.716) after 6 months. The magnesium group demonstrated a significant increase in variation of FMD vs. the placebo group (+3.7 ± 2.1 vs. 2.4 ± 1.2%, P = 0.015). There was a significant correlation between the intracellular magnesium variation and FMD (r = 0.44, P = 0.011). Conclusion: Magnesium supplementation was associated with better BP control, improved endothelial function and amelioration of subclinical atherosclerosis in these thiazide-treated hypertensive women

La genitorialità d'intenzione e il principio di effettività. Riflessioni a margine della decisione della Corte Costituzionale n. 230 del 2020

La nota di commento alla decisione della Corte costituzionale n. 230 del 2020 è l'occasione per una rimeditazione a tutto tondo sulla rilevanza della genitorialità di intenzione alla luce del principio di effettivit

Il Revirement della Cassazione dopo la decisione a Sezioni Unite. Conflitto o dialogo con la Corte di Strasburgo? Alcune notazioni sul diritto vivente delle azioni di stato.

La nota di commento è una riflessione critica in ordine al revirement della Corte di Cassazione semplice che sembra smentire le Sezioni Unite del 2019, denunciando una pretesa violazione del diritto europe

Review: The Music of Antonio Carlos Jobim

Resenha do livro “The Music of Antônio Carlos Jobim”, de Peter Freeman. (Chicago: The University of Chicago Press, 2019. 202 p. ISBN: 978-1-78320-937-8

Aborto previo como factor de riesgo para parto pretérmino en gestantes en un hospital de Piura nivel II-2, 2021

Se elaboró el presente estudio para determinar si el aborto previo es un factor de riesgo para parto pretérmino. Se aplicó un estudio observacional, analítico, de casos y controles. La información fue obtenida por una ficha de recopilación de datos con revisión de historias clínicas de gestantes que fueron atendidas en el servicio de Ginecobstetricia del Hospital de la Amistad Perú Corea Santa Rosa en el año 2021. La muestra fue 206 historias clínicas, 103 correspondientes a casos (gestante con parto pretérmino) y 103 correspondiente a controles (gestante sin parto pretérmino). Se obtuvo que durante el año 2021 se atendieron 2468 partos de los cuales el 18.8% (463) fueron prematuros, el promedio de edad en años de los casos y controles fue de 28.4 y 27.1 respectivamente. Presentaron aborto previo el 60.2% de los casos y 23.3% de los controles. De los casos, 45.6% tuvo 1 aborto, 13.6% presentó 2 abortos y 2% solo 3 abortos; 66.1% presentaron aborto temprano y 33.9% aborto tardío. Se obtuvo un OR = 4.76 [2,58–8,78] con un valor de p <0.05. Concluyendo que el aborto previo es un factor de riesgo para parto pretérmino en el Hospital Santa Rosa Piura

Processo de implantação de sistema de gestão integrado em um laticínio em Morro do Ferro-MG

O sistema de gestão integrado (SGI) engloba diversos setores de uma empresa e é amplamente utilizado como ferramenta imediatista e eficaz no acompanhamento e resolução de processos produtivos, bem como auxilia para a certificação. O presente trabalho tem como objetivo descrever o SGI em um laticínio, compreendendo o seu funcionamento e suas etapas para a implantação. Para isso, foi realizada uma revisão bibliográfica das normas que embasam os sistemas de gestão vigentes nas indústrias de alimentos, seus objetivos e alcances, salientando vantagens e desvantagens e, principalmente, analisando se esse é efetivo no ambiente de trabalho de um laticínio em Minas Gerais. No laticínio em questão, a implantação do SGI promoveu melhorias significativas no relacionamento entre colaboradores e produtividade da empresa, além de maior cautela na fabricação dos produtos. Portanto, concluiu-se que a integração dos sistemas de gestão da qualidade, gestão ambiental, gestão de saúde e segurança e responsabilidade social foi importante para prover melhorias contínuas, corrigindo possíveis não conformidades e, consequentemente, preparando a empresa para a certificação para exportação.The integrated management system (IMS) encompasses several sectors of a company and is widely used as an immediate and effective tool in the monitoring and resolution of productive process, as well as supporting certification. The present work aims to describe an IMS in a dairy, understanding its operation and stages for implantation. For this purpose, it was made a bibliographical review on the standards that base the management systems in the food industries, objectives and scope, highlighting advantages and disadvantages and mainly analyzing if this is effective in the work environment in a dairy in Minas Gerais. In the dairy in question, the implantation of IMS in the relationship between employees and company productivity improved significantly, as well as caution in the manufacture of products. Therefore, it was concluded that the integration of quality, environmental, health and safety and social responsibility management systems was essential to provide continuous improvements, correcting possible nonconformities and, consequently, preparing the company for certification to export