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  1. Article

    Open Access

    Laser texturing of piston ring for tribological performance improvement

    The radial surface coating layer of compression piston rings is used to improve their wear resistance during the internal combustion engine operation. However, at top dead centers, the friction coefficient of ...

    Rita Ferreira, Óscar Carvalho, Luís Sobral, Sandra Carvalho, Filipe Silva in Friction (2023)

  2. Article

    Open Access

    Design, manufacturing, and testing of a laser textured piston ring surface reinforced with a CuCoBe–diamond composite by hot-pressing

    A CuCoBe–diamond composite was used to reinforce a laser textured 410 stainless steel piston ring by hot-pressing. Different hot-pressing parameters were used to optimize the sintering process of the CuCoBe pa...

    Rita Ferreira, Ângela Cunha, Óscar Carvalho in The International Journal of Advanced Manu… (2023)

  3. No Access

    Chapter

    Cognitive Event-Related Potentials and ADHD Across the Lifespan

    People with attention deficit hyperactivity disorder (ADHD) experience cognitive impairments across lifespan. Multiple studies have correlated cognitive dysfunction to multiple brain regions and networks based...

    Sandra Carvalho, Jorge Leite in Clinical Handbook of ADHD Assessment and T… (2023)

  4. Article

    Open Access

    Author Correction: Probing the relationship between late endogenous ERP components with fluid intelligence in healthy older adults

    An amendment to this paper has been published and can be accessed via a link at the top of the paper.

    Ana C. Teixeira-Santos, Diego Pinal, Diana R. Pereira, Jorge Leite in Scientific Reports (2021)

  5. Article

    Open Access

    The effects of direct current stimulation and random noise stimulation on attention networks

    Attention is a complex cognitive process that selects specific stimuli for further processing. Previous research suggested the existence of three attentional networks: alerting, orienting and executive. Howeve...

    Alberto Lema, Sandra Carvalho, Felipe Fregni, Óscar F. Gonçalves in Scientific Reports (2021)

  6. Article

    Open Access

    Probing the relationship between late endogenous ERP components with fluid intelligence in healthy older adults

    The world population is rapidly aging, bringing together the necessity to better understand the advancing age. This characterization may be used to aid early diagnosis and to guide individually-tailored interv...

    Ana C. Teixeira-Santos, Diego Pinal, Diana R. Pereira, Jorge Leite in Scientific Reports (2020)

  7. No Access

    Chapter and Conference Paper

    Design for Additive Manufacturing of Mechanical Connections Toward Hybrid Products

    Improving additive manufacturing (AM) products is important since these technologies still have some limitations that restrict production.

    Álvaro M. Sampaio, Rita Gonçalves in Advances in Additive Manufacturing, Modeli… (2020)

  8. Article

    Open Access

    Fast and efficient microfluidic cell filter for isolation of circulating tumor cells from unprocessed whole blood of colorectal cancer patients

    Liquid biopsy offers unique opportunities for low invasive diagnosis, real-time patient monitoring and treatment selection. The phenotypic and molecular profile of circulating tumor cells (CTCs) can provide ke...

    Silvina Ribeiro-Samy, Marta I. Oliveira, Thais Pereira-Veiga in Scientific Reports (2019)

  9. No Access

    Article

    Neuromodulating Attention and Mind-Wandering Processes with a Single Session Real Time EEG

    Our minds are continuously alternating between external attention (EA) and mind wandering (MW). An appropriate balance between EA and MW is important for promoting efficient perceptual processing, executive fu...

    Óscar F. Gonçalves, Sandra Carvalho in Applied Psychophysiology and Biofeedback (2018)

  10. Article

    Open Access

    Mind Wandering and Task-Focused Attention: ERP Correlates

    Previous studies looking at how Mind Wandering (MW) impacts performance in distinct Focused Attention (FA) systems, using the Attention Network Task (ANT), showed that the presence of pure MW thoughts did not ...

    Óscar F. Gonçalves, Gabriel Rêgo, Tatiana Conde, Jorge Leite in Scientific Reports (2018)

  11. No Access

    Article

    Study adherence in a tDCS longitudinal clinical trial with people with spinal cord injury

    Secondary analysis of a clinical trial.

    Sandra Carvalho, Jorge Leite, Felipe Jones, Leslie R. Morse, Ross Zafonte in Spinal Cord (2018)

  12. Article

    Open Access

    Patterns of Default Mode Network Deactivation in Obsessive Compulsive Disorder

    The objective of the present study was to research the patterns of Default Mode Network (DMN) deactivation in Obsessive Compulsive Disorder (OCD) in the transition between a resting and a non-rest emotional co...

    Óscar F. Gonçalves, José Miguel Soares, Sandra Carvalho, Jorge Leite in Scientific Reports (2017)

  13. Article

    Open Access

    Anodal transcranial direct current stimulation over the left dorsolateral prefrontal cortex modulates attention and pain in fibromyalgia: randomized clinical trial

    Cognitive dysfunction in fibromyalgia patients has been reported, especially when increased attentional demands are required. Transcranial direct current stimulation (tDCS) over the dorsolateral prefrontal cor...

    Adriana Ferreira Silva, Maxciel Zortea, Sandra Carvalho, Jorge Leite in Scientific Reports (2017)

  14. Article

    Open Access

    Acellular Urethra Bioscaffold: Decellularization of Whole Urethras for Tissue Engineering Applications

    Patients with stress urinary incontinence mainly suffer from malfunction of the urethra closure mechanism. We established the decellularization of porcine urethras to produce acellular urethra bioscaffolds for...

    Irina N. Simões, Paulo Vale, Shay Soker, Anthony Atala, Daniel Keller in Scientific Reports (2017)

  15. Article

    Open Access

    Immunomodulation in the canine endometrium by uteropathogenic Escherichia coli

    This study was designed to evaluate the role of E. coli α-hemolysin (HlyA) in the pathogenesis of canine pyometra, and on the immune response of canine endometrial epithelial and stromal cells. In Experiment 1, t...

    Sofia Henriques, Elisabete Silva, Marta F. Silva, Sandra Carvalho in Veterinary Research (2016)

  16. Article

    Open Access

    Four cases of cell cannibalism in highly malignant feline and canine tumors

    Four cases of tumors in which cell internalization was frequently visualized are reported: one feline mammary carcinoma, one feline cutaneous squamous cell carcinoma, one canine pulmonary squamous cell carcino...

    Fernando Costa Ferreira, Maria João Soares, Sandra Carvalho in Diagnostic Pathology (2015)

  17. No Access

    Article

    Brain activation of the defensive and appetitive survival systems in obsessive compulsive disorder

    Several studies have shown that basic emotions are responsible for a significant enhancement of early visual processes and increased activation in visual processing brain regions. It may be possible that the c...

    Óscar F. Gonçalves, José Miguel Soares, Sandra Carvalho in Brain Imaging and Behavior (2015)

  18. No Access

    Article

    Cognitive effects and autonomic responses to transcranial pulsed current stimulation

    Transcranial pulsed current stimulation (tPCS) is emerging as an option in the field of neuromodulation; however, little is known about its effects on cognition and behavior and its neurophysiological correla...

    Leon Morales-Quezada, Camila Cosmo, Sandra Carvalho in Experimental Brain Research (2015)

  19. No Access

    Article

    Improving Tribological Properties of Cast Al-Si Alloys through Application of Wear-Resistant Thermal Spray Coatings

    Flame Spray Thermal Spray coatings are low-cost, high-wear surface-treatment technologies. However, little has been reported on their potential effects on cast automotive aluminum alloys. The aim of this resea...

    David Culliton, Anthony Betts, Sandra Carvalho in Journal of Thermal Spray Technology (2013)

  20. No Access

    Article

    The Emotional Movie Database (EMDB): A Self-Report and Psychophysiological Study

    Film clips are an important tool for evoking emotional responses in the laboratory. When compared with other emotionally potent visual stimuli (e.g., pictures), film clips seem to be more effective in elicitin...

    Sandra Carvalho, Jorge Leite in Applied Psychophysiology and Biofeedback (2012)

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