The evolution of the colour-magnitude relation and of the star formation activity in galaxy clusters since z~0.8

We present recent results on the evolution of the colour-magnitude relation and of the star formation activity in galaxy clusters since z~0.8. Results are based on the ESO Distant Cluster Survey (EDisCS) - an ESO large programme aimed at the study of cluster structure and cluster galaxy evolution over a significant fraction of cosmic time - and are discussed in the framework of the current standard paradigm of structure formation.Comment: 8 pages, 5 figure, to appear in ASP Conference Series (Proceedings of the 1st Subaru International Conference "Panoramic Views of Galaxy Formation and Evolution", held in Japan, 10-15 December 2007

Acute Ingestion of Dark Chocolate Fails to Affect Running Economy in Recreationally Trained Female Runners

Ingestion of dark chocolate (DC), a dietary source high in flavanols, may increase nitric oxide bioavailability. Elevating blood nitric oxide concentrations may augment metabolic efficiency by reducing the amount of oxygen or energy needed to perform a given task. Utilizing a crossover design, the purpose of this study was to investigate the effect of acute ingestion of DC on running economy (RE). Nineteen recreationally trained females (age: 20±1 years) volunteered for this investigation, with 16 completing all procedures (n = 16). Two-hours before RE assessment, participants consumed either 42.5 g of DC or an isocaloric amount of white chocolate (WC) (37.2 g) with a 34 mg caffeine pill. Participants ran on the treadmill at 2.68 m/s for 10-minutes to assess RE. However, only the last 5-minutes of the test were used for oxygen utilization (VO2), energy expenditure (EE), and respiratory exchange ratio (RER) determination via indirect calorimetry. Identical testing procedures were utilized for DC and WC treatments with a seven-day washout period separating trials. A repeated measure paired t-test was used to determine differences between dependent variables with statistical significance set at p \u3c 0.05. There were no significant mean differences (ps \u3e 0.05) between trials for VO2, EE, or RER. In conclusion, supplementation of DC 2-hours prior to steady state running had no effect on RE or fuel utilization compared to an isocaloric serving of WC in recreational female runners

Acute Ingestion of Dark Chocolate Fails to Affect Running Economy in Recreational Female Runners

Topics in Exercise Science and Kinesiology Volume 5: Issue 1, Article 1, 2024. Ingestion of dark chocolate (DC), a dietary source high in flavanols, may increase nitric oxide bioavailability. Elevating blood nitric oxide concentrations may augment metabolic efficiency by reducing the amount of oxygen or energy needed to perform a given task. Utilizing a crossover design, the purpose of this study was to investigate the effect of acute ingestion of DC on running economy (RE). Nineteen recreationally trained females (age: 20±1 years) volunteered for this investigation, with 16 completing all procedures (n = 16). Two-hours before RE assessment, participants consumed either 42.5 g of DC or an isocaloric amount of white chocolate (WC) (37.2 g) with a 34 mg caffeine pill. Participants ran on the treadmill at 2.68 m/s for 10-minutes to assess RE. However, only the last 5-minutes of the test were used for oxygen utilization (VO2), energy expenditure (EE), and respiratory exchange ratio (RER) determination via indirect calorimetry. Identical testing procedures were utilized for DC and WC treatments with a seven-day washout period separating trials. A repeated measure paired t-test was used to determine differences between dependent variables with statistical significance set at p \u3c 0.05. There were no significant mean differences (ps \u3e 0.05) between trials for VO2, EE, or RER. In conclusion, supplementation of DC 2-hours prior to steady state running had no effect on RE or fuel utilization compared to an isocaloric serving of WC in recreational female runners

The ongoing impact of Covid-19 pandemic on children with medical complexity: the experience of an Italian pediatric palliative care network

Background Italy was the first European country to experience a massive outbreak of Sars-coV-2 in March 2020. Severe measures were introduced to face the pandemic, significantly impacting all healthcare services, including pediatric palliative care (PPC) networks. We investigated how the Covid-19 pandemic modified the provision of PPC services in Friuli Venezia Giulia, Italy. Both the acute and long-term impacts on the families were addressed. Methods We administered a retrospective three-sections online questionnaire to the eligible families assisted by our regional PPC network. Inclusion criteria were: child needing specialistic PPC, adequate knowledge of the Italian language, being in charge of the PPC regional network of Friuli Venezia Giulia from February 1, 2020. The three sections examined the same issues in different periods: the pre-covid period (until February 29, 2020), the lockdown period (March 1, 2020, to April 30, 2020), and the post-lockdown period (May 2021). Results Twelve patients were included. During the lockdown period, 54.6% of children had to stop physiotherapy sessions, while, among those who continued, 80.0% experienced a reduction in the sessions' frequency. In the post-lockdown period, 45.5% of children did not have physiotherapy as often as before the pandemic onset. Overall, the access to medical visits during the lockdown and after its end was significantly reduced (p = 0.01). The level of support perceived by the families descended from grade 3 (intermediate) in the pre-covid period to 2 (low) during the lockdown (p < 0.05) and returned to grade 3 in the post-lockdown period. Conclusion The COVID-19 pandemic and the related restrictions impacted the families and caused a transitory contraction of the perceived support. The most significant change was reduced access to medical visits and physiotherapy, which lasted over a year after the start of the pandemic

Elaboration and validation of an information manual for cardiac catheterization

Objective: To elaborate and validate an information manual for cardiac catheterization. Methods: This was a methodological study. The manual was elaborated based on experience of researchers and data from the literature. The manual was validated by 8 nurses by using the Delphi techniqueto be considered valid, agreement must reach 100%. Posteriorly, it was evaluated by 35 patientsat this stage the mean score must be 4 or greater. Results: The manual covers the following topics: definitionlocation and time of conductionhow the procedure was doneand descriptions of care before, during, and after the procedure. A total of four rounds were needed to validate the manual with nurses. In the second step, all questions about the manual had a high mean score (4.83 to 4.91, p < 0.001), making the manual valid for patients. Conclusion: The manual was elaborated and considered valid by nurses and patients. The manual can be applied to different institutions.Objetivo: Elaborar e validar um manual informativo sobre o cateterismo cardíaco. Métodos: Trata-se de um estudo metodológico. O manual foi elaborado de acordo com a experiência dos pesquisadores e em dados da literatura. Foi submetido à validação por oito enfermeiros, utilizando a Técnica de Delphi e para ser considerado válido deveria alcançar 100% de concordância. Posteriormente foi avaliado por 35 pacientes e deveria alcançar uma média de pontuação igual ou superior a 4. Resultados: O manual contém os tópicos: definição, local e tempo de realização, como ele é realizado e os cuidados antes, durante e após o procedimento. Foram necessárias quatro rodadas para validar o manual com os enfermeiros. Na segunda etapa observou-se que todas as questões sobre o manual tiveram médias altas (4,83 a 4,91, p<0,001), tornando o manual válido pelos pacientes. Conclusão: O manual foi elaborado e considerado válido pelos enfermeiros e pacientes e, poderá ser utilizado por diversas instituições.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Bolsa de Iniciação CientíficaUniv Fed Sao Paulo, Escola Paulista Enfermagem, Sao Paulo, SP, BrazilEscola Paulista de Enfermagem, Universidade Federal de São Paulo, SP, BrasilCNPq: 454707/2014-2Bolsa de Iniciação Científica: 167997/2014-9Web of Scienc

Superdense galaxies and the mass-size relation at low redshift

We search for massive and compact galaxies (superdense galaxies, hereafter SDGs) at z=0.03-0.11 in the Padova-Millennium Galaxy and Group Catalogue, a spectroscopically complete sample representative of the local Universe general field population. We find that compact galaxies with radii and mass densities comparable to high-z massive and passive galaxies represent 4.4% of all galaxies with stellar masses above 3 X 10^10 M_sun, yielding a number density of 4.3 X 10^-4 h^3 Mpc^-3. Most of them are S0s (70%) or ellipticals (23%), are red and have intermediate-to-old stellar populations, with a median luminosity-weighted age of 5.4 Gyr and a median mass-weighted age of 9.2 Gyr. Their velocity dispersions and dynamical masses are consistent with the small radii and high stellar mass estimates. Comparing with the WINGS sample of cluster galaxies at similar redshifts, the fraction of superdense galaxies is three times smaller in the field than in clusters, and cluster SDGs are on average 4 Gyr older than field SDGs. We confirm the existence of a universal trend of smaller radii for older luminosity-weighted ages at fixed galaxy mass. On top of the well known dependence of stellar age on galaxy mass, the luminosity-weighted age of galaxies depends on galaxy compactness at fixed mass, and, for a fixed mass and radius, on environment. This effect needs to be taken into account in order not to overestimate the evolution of galaxy sizes from high- to low-z. Our results and hierarchical simulations suggest that a significant fraction of the massive compact galaxies at high-z have evolved into compact galaxies in galaxy clusters today. When stellar age and environmental effects are taken into account, the average amount of size evolution of individual galaxies between high- and low-z is mild, a factor ~1.6. (abridged)Comment: ApJ, in pres

The evolution of galaxy sizes

We present a study of galaxy sizes in the local Universe as a function of galaxy environment, comparing clusters and the general field. Galaxies with radii and masses comparable to high-z massive and compact galaxies represent 4.4% of all galaxies more massive than 3 X 10^{10} M_sun in the field. Such galaxies are 3 times more frequent in clusters than in the field. Most of them are early-type galaxies with intermediate to old stellar populations. There is a trend of smaller radii for older luminosity-weighted ages at fixed galaxy mass. We show the relation between size and luminosity-weighted age for galaxies of different stellar masses and in different environments. We compare with high-z data to quantify the evolution of galaxy sizes. We find that, once the progenitor bias due to the relation between galaxy size and stellar age is removed, the average amount of size evolution of individual galaxies between high- and low-z is mild, of the order of a factor 1.6.Comment: to appear in the proceedings of the IAU S295: The intriguing life of massive galaxies, editors D. Thomas, A. Pasquali & I. Ferrera

The build-up of the colour-magnitude relation in galaxy clusters since z~0.8

Using galaxy clusters from the ESO Distant Cluster Survey, we study how the distribution of galaxies along the colour-magnitude relation has evolved since z~0.8. While red-sequence galaxies in all these clusters are well described by an old, passively evolving population, we confirm our previous finding of a significant evolution in their luminosity distribution as a function of redshift. When compared to galaxy clusters in the local Universe, the high redshift EDisCS clusters exhibit a significant "deficit" of faint red galaxies. Combining clusters in three different redshift bins, and defining as `faint' all galaxies in the range 0.4 > L/L* > 0.1, we find a clear decrease in the luminous-to-faint ratio of red galaxies from z~0.8 to z~0.4. The amount of such a decrease appears to be in qualitative agreement with predictions of a model where the blue bright galaxies that populate the colour-magnitude diagram of high redshift clusters, have their star formation suppressed by the hostile cluster environment. Although model results need to be interpreted with caution, our findings clearly indicate that the red-sequence population of high-redshift clusters does not contain all progenitors of nearby red-sequence cluster galaxies. A significant fraction of these must have moved onto the red-sequence below z~0.8.Comment: 15 pages, 10 figures, accepted for publication in MNRA

Clínicas de Inovação: Um Programa de Fomento ao Empreendedorismo Universitário

Este artigo apresenta o cotejamento entre constructos teóricos obtidos a partir de literatura científica qualificada e ilustração de dois casos do programa de fomento ao empreendedorismo universitário, Clínicas de Inovação da Universidade Federal de Santa Catarina. As atividades de desenvolvimento de modelos de negócios utilizadas pelo programa são baseadas na abordagem design thinking, que atua alinhando as necessidades dos usuários à proposição de negócio. Então, essa pesquisa abordará o método de trabalho da Clínica, resultados dos casos e lições aprendidas. Como resultado, identificou-se a influência do ambiente universitário na intenção empreendedora dos graduandos e que seus valores e preferências afetam diretamente o desenvolvimento de seus negócios

Hidden Comorbidities in Asthma: A Perspective for a Personalized Approach

: Bronchial asthma is the most frequent inflammatory non-communicable condition affecting the airways worldwide. It is commonly associated with concomitant conditions, which substantially contribute to its burden, whether they involve the lung or other districts. The present review aims at providing an overview of the recent acquisitions in terms of asthma concomitant systemic conditions, besides the commonly known respiratory comorbidities. The most recent research has highlighted a number of pathobiological interactions between asthma and other organs in the view of a shared immunological background underling different diseases. A bi-univocal relationship between asthma and common conditions, including cardiovascular, metabolic or neurodegenerative diseases, as well as rare disorders such as sickle cell disease, α1-Antitrypsin deficiency and immunologic conditions with hyper-eosinophilia, should be considered and explored, in terms of diagnostic work-up and long-term assessment of asthma patients. The relevance of that acquisition is of utmost importance in the management of asthma patients and paves the way to a new approach in the light of a personalized medicine perspective, besides targeted therapies