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  1. No Access

    Article

    Substrate influence in viral and bacteria UV-C disinfection

    Germicidal ultraviolet (UV-C) has been reported for the disinfection of water, air, and surfaces without textures, mainly in hospital environments. With the hit of the SARS-CoV-2 pandemic and its broad dissemi...

    A. C. S. Mosena, G. M. Breyer, L. C. Zitelli in International Journal of Environmental Sci… (2024)

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    Article

    Squeezed coherent states for a free particle with time-varying mass

    We obtain the squeezed coherent states (SCS) for a free particle with exponentially time-varying mass. We write these states in terms of the squeeze and displacement parameters on the time-independent Fock sta...

    A. S. Pereira, A. S. Lemos, F. A. Brito in The European Physical Journal Plus (2023)

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    Article

    Generalized para-Bose states

    In this paper, we construct integrals of motion in a para-Bose formulation for a general time-dependent quadratic Hamiltonian, which, in its turn, commutes with the reflection operator. In this context, we obt...

    A. S. Pereira, A. S. Lemos, F. A. Brito in The European Physical Journal Plus (2022)

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    Chapter

    Heat Transfer in a Packed-Bed Elliptic Cylindrical Reactor: Theory, Heterogeneous Transient Modeling, and Applications

    This chapter focuses on the study of heat transfer in packed-bed elliptic cylindrical reactor. Based on the local thermal non-equilibrium, a heterogeneous mathematical model was developed. The transient model ...

    A. S. Pereira, R. M. da Silva, R. S. Santos in Transport Processes and Separation Technol… (2021)

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    Article

    Lower gamma band in the classification of left and right elbow movement in real and imaginary tasks

    In this article, the activity of lower gamma band was used to classify right and left elbow movements performed from real and imaginary tasks in two different cognitive states: the preparation and the movement...

    E. Y. Veslin, M. S. Dutra, L. Bevilacqua in Journal of the Brazilian Society of Mechan… (2019)

  6. Article

    Correction to: Toxicity prediction and assessment of an environmentally realistic pesticide mixture to Daphnia magna and Raphidocelis subcapitata

    Acknowledgements This work was supported by LEAF (UID/AGR/04129/2013) and CESAM (UID/AMB/50017/2013) from FCT/MEC through national funds, and the cofunding by FEDER (POCI-01-0145-FEDER-007638), within the PT20...

    E. Silva, C. Martins, A. S. Pereira, S. Loureiro, M. J. Cerejeira in Ecotoxicology (2018)

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    Article

    Toxicity prediction and assessment of an environmentally realistic pesticide mixture to Daphnia magna and Raphidocelis subcapitata

    In a regulatory perspective addressing the cumulative effect of co-occurring chemicals is the first and most important step in providing a more realistic hazard assessment of chemical cocktails to both man and...

    E. Silva, C. Martins, A. S. Pereira, S. Loureiro, M. J. Cerejeira in Ecotoxicology (2018)

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    Article

    Coherent and Semiclassical States of a Charged Particle in Electromagnetic Fields

    In the present article, we extend our study (Bagrov et al., Braz. J. Phys. 45, 369, 2015) of generalized coherent states (GCS) of a one-dimensional particle considering such important physical system as a three-d...

    A. S. Pereira in Brazilian Journal of Physics (2018)

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    Article

    Coherent and Semiclassical States of a Charged Particle in a Constant Electric Field

    The method of integrals of motion is used to construct families of generalized coherent states of a nonrelativistic spinless charged particle in a constant electric field. Families of states, differing in the ...

    T. C. Adorno, A. S. Pereira in Russian Physics Journal (2018)

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    Chapter

    Unsteady State Heat Transfer in Packed-Bed Elliptic Cylindrical Reactor: Theory, Advanced Modeling and Applications

    Transport phenomena through porous media has been of continuing interest for scientists, researchers and engineers due to the wide range of industrial applications. This chapter presents information about unst...

    R. M. da Silva, Antonio Gilson Barbosa de Lima in Transport Phenomena in Multiphase Systems (2018)

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    Article

    Parametric analysis of the growth of colloidal ZnO nanoparticles synthesized in alcoholic medium

    The growth kinetics of nanosized ZnO was studied considering the influence of different parameters (mixing degree, temperature, alcohol chain length, reactant concentration and Zn/OH ratios) on the synthesis r...

    A. S. Fonseca, P. A. Figueira, A. S. Pereira in Journal of Nanoparticle Research (2017)

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    Article

    Coherent States of Systems with Quadratic Hamiltonians

    Different families of generalized coherent states (CS) for one-dimensional systems with general time-dependent quadratic Hamiltonian are constructed. In principle, all known CS of systems with quadratic Hamilt...

    V. G. Bagrov, D. M. Gitman, A. S. Pereira in Brazilian Journal of Physics (2015)

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    Chapter and Conference Paper

    Azotobacter vinelandii Nitrogenase MoFe Protein: Pre-Steady State Spectroscopic Studies of the Metal Cofactors

    Rapid freezing of wild-type A. vinelandii nitrogenase at a 3:1 molar ratio of Fe protein to MoFe protein, 23°C, and pH 7.4, elicited two transient electron paramagnetic resonance (EPR) signals (signals 1b and 1c)...

    W. E. Newton, K. Fisher, B. H. Huynh in Biological Nitrogen Fixation: Towards Pove… (2008)

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    Article

    Optical studies of ZnO nanocrystals doped with Eu3+ ions

    Synthetic ZnO nanocrystals have been intentionally doped with Eu3+ ions. Structural analysis performed on the nanocrystals showed wurtzite-ZnO as the only phase present in the samples. Photoluminescence in emissi...

    M. Peres, A. Cruz, S. Pereira, M.R. Correia, M.J. Soares, A. Neves in Applied Physics A (2007)

  15. No Access

    Article

    A phase I trial of the bombesin/gastrin-releasing peptide (BN/GRP) antagonist RC3095 in patients with advanced solid malignancies

    Bombesin/gastrin-releasing peptides (BN/GRP) were shown to bind selectively to cell surface receptors, stimulating the growth of various types of malignancies in murine and human models. The novel BN/GRP synth...

    G. Schwartsmann, L. P. DiLeone, M. Horowitz, D. Schunemann in Investigational New Drugs (2006)

  16. No Access

    Article

    Effects on concrete durability of using recycled ceramic aggregates

    Ceramic waste from ceramic and construction industries is one of the most important parts in the global volume of construction and demolition waste (CDW). Ceramic waste may have several uses, one of which as c...

    J. R. Correia, J. de Brito, A. S. Pereira in Materials and Structures (2006)

  17. No Access

    Article

    Zonation of Ciliated Cells on the Epithelium of the Rat Trachea

    We have used scanning electron microscopy (SEM) to screen the entire epithelial surface of the cervical trachea of the adult rat. This scrutiny revealed that the density of ciliated cells along this epithelium...

    M. J. R. Oliveira, A. S. Pereira, L. Guimarães, N. R. Grande, C. Moreira de Sá in Lung (2003)

  18. No Access

    Article

    The effect of the expansion ratio on a turbulent non-Newtonian recirculating flow

     Measurements of the mean and turbulent flow characteristics of shear-thinning moderately elastic 0.1% and 0.2% xanthan gum aqueous solutions were carried out in a sudden expansion having a diameter ratio of 2...

    A. S. Pereira, F. T. Pinho in Experiments in Fluids (2002)

  19. No Access

    Article

    In Utero and Postnatal Exposure of Wistar Rats to Low Frequency/High Intensity Noise Depletes the Tracheal Epithelium of Ciliated Cells

    M.J.R. Oliveira, A.S. Pereira, N.A.A. Castelo Branco, N.R. Grande, A.P. Águas in Lung (2001)

  20. No Access

    Article

    Structural evolution of rutile-type and CaCl2-type germanium dioxide at high pressure

     Germanium dioxide was found to undergo a transition from the tetragonal rutile-type to the orthorhombic CaCl2-type phase above 25 GPa. The detailed structural evolution of both phases at high pressure in a diamo...

    J. Haines, J. M. Léger, C. Chateau, A. S. Pereira in Physics and Chemistry of Minerals (2000)

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