Investigating evidence for different black hole accretion modes since redshift z~1

Chandra data in the COSMOS, AEGIS-XD and 4Ms CDFS are combined with optical/near-IR photometry to determine the rest-frame U-V vs V-J colours of X-ray AGN hosts at mean redshifts 0.40 and 0.85. This combination of colours (UVJ) provides an efficient means of separating quiescent from star-forming, including dust reddened, galaxies. Morphological information emphasises differences between AGN split by their UVJ colours. AGN in quiescent galaxies are dominated by spheroids, while star-forming hosts are split between bulges and disks. The UVJ diagram of AGN hosts is then used to set limits on the accretion density associated with evolved and star-forming systems. Most of the black hole growth since z~1 is associated with star-forming hosts. Nevertheless, ~15-20% of the X-ray luminosity density since z~1, is taking place in the quiescent region of the UVJ diagram. For the z~0.40 subsample, there is tentative evidence (2sigma significance), that AGN split by their UVJ colours differ in Eddington ratio. AGN in star-forming hosts dominate at high Eddington ratios, while AGN in quiescent hosts become increasingly important as a fraction of the total population toward low Eddington ratios. At higher redshift, z~0.8, such differences are significant at the 2sigma level only at Eddington ratios >1e-3. These findings are consistent with scenarios in which diverse accretion modes are responsible for the build-up of SMBHs at the centres of galaxies. We compare our results with the GALFORM semi-analytic model, which postulates two black hole fuelling modes, the first linked to star-formation and the second occuring in passive galaxies. GALFORM predicts a larger fraction of black hole growth in quiescent galaxies at z<1, compared to the data. Relaxing the strong assumption of the model that passive AGN hosts have zero star-formation rate could reconcile this disagreement.Comment: MNRAS accepte

All-out Test In Tethered Canoe System Can Determine Anaerobic Parameters Of Elite Kayakers

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)The aims of this study were to use a specific all-out 30-sec tethered test to determine the anaerobic parameters in elite kayakers and verify the relationship between these results and sports performance. Twelve elite slalom kayakers were evaluated. The tethered canoe system was created and used for the all-out 30-sec test application. Measurements of peak force, mean force, minimum force, fatigue index and impulse were performed. Performance evaluation was determined by measuring the time of race in a simulated race containing 24 gates on a white-water course. Blood was collected (25-mu l) for analysis of lactate concentration at rest and at 2, 4, 6, 8 and 10-min intervals after both the all-out test and the simulated race. The Pearson product moment correlation shows a inverse and significant relationship of peak force, mean force and impulse with time of race. Blood lactate concentrations after the all-out test and the simulated race peak at same time (4min). Additionally, no interaction was visualized between time and all-out test/simulated race for blood lactate concentrations (P<0.365). These results suggest a relationship between the parameters of the all-out test and performance. Thus, the tethered canoe system is a useful tool for determining parameters that could be used in training control of slalom kayakers.3610803808Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundo de Apoio ao Ensino, a Pesquisa e a Extensao (FAEPEX) [Proc. 756/13]Funcamp [Proc. 1403]Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)FAPESP [Proc. 2012/06355-2, 2009/08535-5

Avaliações da subtração dos elementos N, P e K sobre a produção e qualidade de frutos de amoreira-preta.

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Definição da posição da folha de pimenta longa para avaliação do estado nutricional.

Foram avaliadas quatro posições de amostragem de folhas de pimenta longa para fins de definição da amostragem mais adequados em estudos de nutrição de plantas desta espécie, visando subsidiar pesquisas com sua domesticação. Folhas completamente expandidas de vinte plantas de diferentes parcelas experimentais de um experimento, que receberam mesma adubação anual, foram amostradas, nas posições, do ápice para a base do galho: P1- primeira folha, P2 – segunda folha, P3 - terceira folha e P4, quarta folha, tomando-se, vinte amostras por parcela, as quais foram depois reunidas em uma amostra composta por parcela As folhas foram avaliadas para os teores de macro e micronutrientes. Foram comparadas médias e variabilidade entre as diferentes posições, com base nos teores foliares e índices DRIS multivariados. Para a maioria dos nutrientes avaliados não houve efeito da posição de amostragem, sendo que na posição P1, houve maior concordância entre o estado nutricional determinado pelo DRIS e pelo método convencional, além de menor variabilidade amostral, sendo esta a posição de amostragem indicada

Avaliações da subtração dos elementos N, P e K sobre o crescimento vegetativo da Amoreira-Preta.

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Optical, near-IR and sub-mm IFU Observations of the nearby dual AGN Mrk 463

We present optical and near-IR Integral Field Unit (IFU) and ALMA band 6 observations of the nearby dual Active Galactic Nuclei (AGN) Mrk 463. At a distance of 210 Mpc, and a nuclear separation of $\sim$4 kpc, Mrk 463 is an excellent laboratory to study the gas dynamics, star formation processes and supermassive black hole (SMBH) accretion in a late-stage gas-rich major galaxy merger. The IFU observations reveal a complex morphology, including tidal tails, star-forming clumps, and emission line regions. The optical data, which map the full extent of the merger, show evidence for a biconical outflow and material outflowing at $>$600 km s$^{-1}$, both associated with the Mrk 463E nucleus, together with large scale gradients likely related to the ongoing galaxy merger. We further find an emission line region $\sim$11 kpc south of Mrk 463E that is consistent with being photoionized by an AGN. Compared to the current AGN luminosity, the energy budget of the cloud implies a luminosity drop in Mrk 463E by a factor 3-20 over the last 40,000 years. The ALMA observations of $^{12}$CO(2-1) and adjacent 1mm continuum reveal the presence of $\sim$10$^{9}$M$_\odot$ in molecular gas in the system. The molecular gas shows velocity gradients of $\sim$800 km/s and $\sim$400 km/s around the Mrk 463E and 463W nuclei, respectively. We conclude that in this system the infall of $\sim$100s $M_\odot$/yr of molecular gas is in rough balance with the removal of ionized gas by a biconical outflow being fueled by a relatively small, $<$0.01% of accretion onto each SMBH.Comment: Accepted by The Astrophysical Journal, 23 pages, 19 figure

Structural differences on cell wall polysaccharides of brewer's spent Saccharomyces and microarray binding profiles with immune receptors

Funding Information: This work was financial supported by FCT - Fundação para a Ciência e a Tecnologia , I.P. within the project “Yeast4FoodMed” ( POCI-01-0145-FEDER-030936 and PTDC/BAA-AGR/30936/2017 ) and LAQV/REQUIMTE ( UIDB/50006/2020 and UIDP/50006/2020 ) through national funds and, where applicable, co-financed by the FEDER , within the PT2020 Partnership Agreement. This work was also financed by national funds from FCT , in the scope of the project UIDP/04378/2020 and UIDB/04378/2020 of the Research Unit on Applied Molecular Biosciences - UCIBIO and the project LA/P/0140/2020 of the Associate Laboratory Institute for Health and Bioeconomy - i4HB. Rita Bastos ( PD/BD/114579/2016 ), Viviana G. Correia ( PD/BD/105727/2014 ) and Angelina S. Palma ( PTDC/BIA-MIB/31730/2017 ) were supported by FCT . Elisabete Coelho (CDL-CTTRI-88-ARH/2018 - REF. 049-88-ARH/2018 ) and Benedita Pinheiro thank the research contracts funded by FCT through program DL 57/2016 – Norma transitória. Publisher Copyright: © 2022 The AuthorsBrewing practice uses the same yeast to inoculate the following fermentation (repitching). Saccharomyces pastorianus, used to produce Lager beer, is widely reused, not changing its fermentation performance. However, S. cerevisiae, used to produce Ale beer, is partial or not even reused, due to its poor performance. It is hypothesized that cells modulate their wall polysaccharides to increase the cell-wall strength. In this work industrial S. cerevisiae and S. pastorianus brewer's spent yeasts with different repitching numbers were studied. Glucans were the main component of S. cerevisiae whereas mannoproteins were abundant in S. pastorianus. The major changes were noticed on glucans of both species, β1,3-glucans decrease more pronounced in S. cerevisiae. The increase of α1,4-Glc, related with osmotolerance, was higher in S. cerevisiae while β1,4-Glc, related with cell-wall strength, had a small increase. In addition, these structural details showed different binding profiles to immune receptors, important to develop tailored bioactive applications.publishersversionpublishe