A5082856919- Galaxies: Formation, Evolution, Phenomena
- Astronomy and Astrophysical Research
- Astrophysical Phenomena and Observations
- Stellar, planetary, and galactic studies
- Astrophysics and Cosmic Phenomena
- Gamma-ray bursts and supernovae
- Astrophysics and Star Formation Studies
- Astronomical Observations and Instrumentation
- Agricultural and Food Sciences
- Education and Digital Technologies
- Environmental Sustainability and Education
- Radio Astronomy Observations and Technology
- Rural Development and Agriculture
- Probiotics and Fermented Foods
- Business and Management Studies
- Education Pedagogy and Practices
- Identification and Quantification in Food
- History and Developments in Astronomy
- Chemical Safety and Risk Management
- Protein Hydrolysis and Bioactive Peptides
- Academic Research in Diverse Fields
- Adaptive optics and wavefront sensing
- Indoor Air Quality and Microbial Exposure
- Youth, Drugs, and Violence
- Plant-Derived Bioactive Compounds
Polytechnic Institute of Viana do Castelo
2015-2025
Universidade Federal Rural do Semi-Árido
2024
Universidade do Estado do Pará
2024
Microsoft (Portugal)
2021
National Institute for Astrophysics
2010-2015
Arcetri Astrophysical Observatory
2014-2015
European Space Astronomy Centre
2011-2014
Universidade do Porto
2010-2014
Instituto Politécnico de Leiria
2013
Instituto Politécnico Nacional
2012
We present the XXL Survey, largest XMM programme totaling some 6.9 Ms to date and involving an international consortium of roughly 100 members. The Survey covers two extragalactic areas 25 deg2 each at a point-source sensitivity ~ 5E-15 erg/sec/cm2 in [0.5-2] keV band (completeness limit). survey's main goals are provide constraints on dark energy equation state from space-time distribution clusters galaxies serve as pathfinder for future, wide-area X-ray missions. review science objectives,...
Natural compounds from agro-food by-products have fostered interest in food industries. The aim of this study was to unravel potential uses for Pinus pinaster bark extracts (PBE). As functional features type are usually attributed phenolic compounds, the extraction process studied. Different PBEs were achieved, with high content using different water/ethanol combinations as a solvent. These chemically characterized, and their bioactivity vitro cell viability evaluated. Extracts obtained...
The coconut tree (Cocos nucifera) stands as a pivotal resource in tropical regions, playing crucial role both subsistence and economic activities across Asia, the Pacific Islands, South America. While harvesting of fruit is essential for producing globally utilized edible products, such oil, by small owners large producers around world food, cosmetics, pharmaceutical industries, concerns have arisen due to substantial amount agro-industrial residue generated this process, posing...
The study of natural materials inspires sustainable innovations, with biomimetics excelling in surface modification. Polydopamine (PDA) offers a promising approach for modifying cellulose nanocrystals (CNC), enhancing their compatibility hydrophobic polymers by improving interfacial adhesion. In this work, the modification CNC PDA (CNC@PDA) significantly enhanced between nanocargoes and acetate (CA) matrix. CNC@PDA complex formation was suggested through combination FTIR analysis, particle...
Gasification of lignocellulosic biomass has been widely highlighted as one the most robust and promising low-carb approaches toward sustainable energy production. The gasification syngas obtained from agro-industrial residues can produce heat, power, biohydrogen, other drop-in biofuels via F-T (Fischer-Tropsch) synthesis. However, tar formation during thermochemical process imposes severe limitations on commercial scale this technology. Tar elimination is a critical step for avoiding damage...
Aims. We investigate the detection of Cool Cores (CCs) in distant galaxy cluster population with purpose measuring CC fraction out to redshift . Using a sample nearby clusters spanning wide range morphologies, we define criteria characterize cool cores, which are applicable high-redshift sample.
[Abridged] XMMU J2235.3-2557 is one of the most distant X-ray selected clusters, spectroscopically confirmed at z=1.39. We characterize galaxy populations passive members, thermodynamical properties hot gas, its metal abundance and total mass system using imaging data with HST/ACS (i775 z850 bands) VLT/ISAAC (J K_s bands), extensive spectroscopic obtained VLT/FORS2, deep Chandra observations. Out a sample 34 cluster we 16 galaxies within central 2' (or 1 Mpc) ACS coverage, inferred star...
We present a multi-wavelength study of galaxy populations in the core massive, X-ray luminous cluster XMMU J2235 at z = 1.39, based on high quality VLT and HST photometry optical near-infrared wavelengths.
We present the largest sample of spectroscopically confirmed X-ray luminous high-redshift galaxy clusters to date comprising 22 systems in range 0.9\sim0.9. first details two newly identified clusters, XDCP J0338.5+0029 at z=0.916 and J0027.2+1714 z=0.959, investigate Xray properties SpARCS J003550-431224 z=1.335, which shows evidence for ongoing major merger activity along line-of-sight. provide luminosity-based total mass estimates full sample, has a median system...
We report on the discovery of a very distant galaxy cluster serendipitously detected in archive XMM-Newton mission, within scope Distant Cluster Project (XDCP). XMMUJ0044.0-2033 was at high significance level (5sigma) as compact, but significantly extended source X-ray data, with soft-band flux f(r<40")=(1.5+-0.3)x10^(-14) erg/s/cm2. Optical/NIR follow-up observations confirmed presence an overdensity red galaxies matching emission. The spectroscopically to be z=1.579 using ground-based...
We present APEX LABOCA 870 micron observations of the field around high-redshift radio galaxy MRC1138-262 at z=2.16. detect 16 submillimeter galaxies in this ~140 square arcmin bolometer map with flux densities range 3-11 mJy. The raw number counts indicate a density (SMGs) that is up to four times blank surveys. Based on an exquisite multiwavelength database, including VLA 1.4 GHz and infrared observations, we investigate whether these sources are members protocluster structure z=2.2. Using...
Abstract Dusty, star-forming galaxies have a critical role in the formation and evolution of massive Universe. Using deep far-infrared imaging range 100–500 μm obtained with Herschel telescope, we investigate dust-obscured star (SF) galaxy cluster XDCP J0044.0-2033 at z = 1.58, most &gt; 1.5, measured mass M200 4.7$^{+1.4}_{-0.9}$ × 1014 M⊙. We perform an analysis spectral energy distributions (SEDs) 12 members (5 spectroscopically confirmed) detected ≥3σ significance PACS maps, all...
During eye development, retinal progenitors are drawn from a multipotent, proliferative cell population. In Drosophila the maintenance of this population requires function TALE-homeodomain transcription factor Hth, although its mechanisms action still unknown. Here we investigate whether members Meis gene family, vertebrate homologs hth, also involved in early stages development zebrafish. We show that meis1 is initially expressed throughout primordium. Later, becomes repressed as...
<i>Context. <i/>Cool-core clusters are characterized by strong surface brightness peaks in the X-ray emission from Intra Cluster Medium (ICM). This phenomenon is associated with complex physics ICM and has been a subject of intense debate investigation recent years. The evolution cool-cores still poorly constrained because small sample statistics observational challenge analysing high redshift clusters.<i>Aims. <i/>In order to quantify cool-core cluster population, we robustly measure...
Observational galaxy cluster studies at z>1.5 probe the formation of first massive M>10^14 Msun dark matter halos, early thermal history hot ICM, and emergence red-sequence population quenched early-type galaxies. We present results for newly discovered X-ray luminous XMMU J1007.4+1237 z=1.555, detected confirmed by XMM-Newton Distant Cluster Project (XDCP) survey. selected system as a serendipitous weak extended source in archival data followed it up with two-band near-infrared imaging deep...
We present a detailed study of the infrared spectral energy distribution high-redshift radio galaxy MRC 1138-26 at z = 2.156, also known as Spiderweb Galaxy. By combining photometry from Spitzer, Herschel and LABOCA we fit rest-frame 5-300 um emission using two component, starburst active galactic nucleus (AGN), model. The total (8 - 1000 um) luminosity this is (1.97+/-0.28)x10^13 Lsun with (1.17+/-0.27) (0.79+/-0.09)x10^13 due to AGN components respectively. high derived accretion rate...
The galaxy cluster CLG0218.3-0510 at z = 1.62 is one of the most distant clusters known, with a rich multiwavelength data set that confirms mature population already in place. Using very deep, wide-area (20 Mpc × 20 Mpc) imaging by Spitzer MIPS 24 μm, conjunction Herschel five-band from 100 to 500 we investigate dust-obscured, star formation properties and its associated large-scale environment. Our sample 693 galaxies ∼ detected μm (10 spectroscopic 683 photo-z) includes both (i.e. within r...
We present a comprehensive study of star-forming (SF) galaxies in the Hubble Space Telescope(HST) Frontier Field recent cluster merger A2744 (z = 0.308). Wide-field, ultraviolet–infrared (UV–IR) imaging enables direct constraint total star formation rate (SFR) for 53 galaxies, with SFRUV+IR 343 ± 10 M⊙ yr−1. Within central 4 arcmin (1.1 Mpc) radius, integrated SFR is complete, yielding 201 9 Focusing on obscured formation, this core region exhibits SFRIR 138 8 yr−1, mass-normalized ΣSFR 11.2...
We report the analysis of Chandra observation XDCP J0044.0-2033, a massive, distant (z=1.579) galaxy cluster discovered in survey. The total exposure time 380 ks with ACIS-S provides deepest X-ray currently achieved on high redshift cluster. Extended emission from Intra Cluster Medium (ICM) is detected at very significance level (S/N~20) circular region 44" radius, corresponding to $R_{ext}=375$ kpc redshift. perform an spectral fit ICM modeling spectrum single-temperature thermal mekal...
We investigate various galaxy population properties of the massive X-ray luminous cluster XDCP J0044.0-2033 at z=1.58, which constitutes most extreme matter density peak this redshift currently known. analyze deep VLT/HAWK-I NIR data in J- and Ks-bands, complemented by Subaru imaging i V, Spitzer observations 4.5 micron, new spectroscopic with VLT/FORS2. detect a cluster-associated excess about 90 galaxies, follows centrally peaked, compact NFW surface profile concentration c200~10. Based on...
The texts, presented here: Modes of Constitution Brazilian Teaching: Traditionalism, Technical Competence and Good Practices, by Renata Porcher Scherer formation teachers theories teaching knowledge: contexts, doubts challenges, Wanderson Ferreira Alves, bring at the heart their questions, respectively, clarify which practices teaching, in pedagogical literature, can be observed mid-twentieth century analyze studies on knowledge as well training Brazil. central idea first text is to map...
This paper aims to investigate the effectiveness of low-tech alternative communication boards (ACC) in teaching self-care skills nonverbal children with Autism Spectrum Disorder (ASD). The research highlights importance creating an inclusive school environment and teacher's role implementing effective pedagogical practices. Assistive Technology is presented as a set tools that support ASD, AAC serving practical accessible alternative. methodology employed was literature review covering...