26 documents found, page 1 of 3

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Growth of Al:ZnO nano-flowers by pulsed laser ablation deposition

Tiss, B.; Martínez-Martínez, D.; Silva, B.; Bouguila, N.; El Mir, L.; Almeida, B.; Moura, C.; Cunha, L.

Aluminium-doped (3%) zinc oxide thin films (AZO) were prepared, using pulsed laser deposition, with varying deposition times. The target was fabricated from compacted aluminium-doped zinc oxide nano-powder produced by sol–gel. The films had a growth consisting of nanostructures in the form of columns with sharp ends which, for certain deposition times, resemble nano-flowers or nano-leaves. The small spheroid-li...


Food safety climate and knowledge about food safety in Portuguese higher educat...

Lopes, C.; Oliveira, B.; Poínhos, Rui; Vieira, J.; Almeida, B.; Lima, J.; Rocha, Ada


Identifying promising domains of decarbonization technologies: An improved meth...

Costa, P. M.; Tomé, P.; Duarte, A.; Bento, N.; Almeida, B.

Humanity has sought ways to decarbonize the economies and mitigate the effects of global warming. The scientific community has been producing intensive research on decarbonizing technologies and strategies. This article introduces an improved methodology, based on two available text-mining software, to identify the most relevant domains of decarbonizing technologies presented in scientific papers, research proj...

Date: 2023   |   Origin: Repositório ISCTE

A bibliometric based analysis to identify promising domains of decarbonisation ...

Costa, P. M.; Tomé, P.; Almeida, B.; Bento, N.

The high volume of research outputs related to technologies and strategies for decarbonisation can make it challenging to understand the relevance of the presented proposals. In this paper, a bibliometric-based analysis is proposed to understand better the domains and subdomains of decarbonisation technologies that have given more attention by the scientific community. The results show that carbon capture techn...

Date: 2022   |   Origin: Repositório ISCTE

"Food safety climate" and knowledge about food safety in food service units

Lopes, C.; OLiveira, B.; Poínhos, Rui; Vieira, J.; Almeida, B.; Lima, J.; Rocha, Ada


Unit cell volume reduction of Gd5(Si,Ge)4 nanoparticles controlled by bulk comp...

Andrade, V. M.; Belo, J. H.; Checca, N. R.; Rossi, A.; Garcia, F.; Almeida, B.; Tedesco, J. C. G.; Poulain, A.; Pereira, A. M.; Reis, M. S.

The production of Gd5(Si,Ge)4 compounds in reduced dimensionality, through pulsed laser deposition (PLD), have shown their potential for practical applications. Here, we present nanoparticles ranging from 10 to 27 nm of average particle size of Gd5(SixGe1-x)4, with x = 0, 0.45 and 0.60, obtained using an Nd:Yag (1064 nm) and an Excimer KrF laser (248 nm). Synchrotron X-ray Diffraction measurements revealed a re...


"Food safety climate" e conhecimentos sobre segurança alimentar em trabalhadore...

Lopes, C.; Oliveira, B.; Poínhos, Rui; Vieira, J.; Almeida, B.; Lima, J.P.; Rocha, Ada


Migration and integration: the case of health literacy (HLS-EU-PT) as a foundat...

Saboga-Nunes, Luís; Silva, A.; Mendes, S.; Almeida, B.; André, M.R.; Reis, Alcinda Maria Sarmento do Sacramento Costa

Portugal has experienced trough-out his recent history successive migration patterns. Lately, with instability in Syria and the Mediterranean routes of migration between Africa and Europe, new challenges have emerged. One of them is related to migrants’ health and their navigation of health care system. In order to better understand cultural patterns of migrants, this research aims to explore their health liter...


Volatile Organic Compounds in Healthcare facilities - A study developed in Prim...

Viegas, S.; Almeida, B.; Gamelas ou Carla A. Gamelas, Carla; Carolino, E.; Viegas, C.


Is the quantitative cut-off a suitable surrogate to ensure a good indoor air qu...

Viegas, Carla; Almeida, B.

Control measures are crucial in clinical environments for reducing concentrations of airborne fungal and, consequently, to avoid invasive infections acquired from indoor air. This study intends to assess mycobiota in 10 Primary Health Care Centers (PHCC) applying the Indoor Air Quality Portuguese legislation as guidance. After the quantitative cut-off analyses (ratio between indoor and outdoor load (I/O)) the f...


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