Search Results - "Nogueira, Helena I. S"

Surface-Enhanced Raman Scattering Spectral Imaging for the Attomolar Range Detection of Crystal Violet in Contaminated Water by Fateixa, Sara, Nogueira, Helena I. S, Trindade, Tito

“…A series of nanocomposites based on polyamide (NL16, PA) filter membranes containing metal nanoparticles (NPs) have been prepared by filtration under reduced…”
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Analysis of lock-exchange gravity currents over smooth and rough beds by Nogueira, Helena I. S., Adduce, Claudia, Alves, Elsa, Franca, Mário J.

“…Gravity currents produced by full-depth lock-release of saline water into a fresh water tank are studied focusing on the influence of the initial density of…”
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SERS studies of DNA nucleobases using new silver poly(methyl methacrylate) nanocomposites as analytical platforms by Pinheiro, Paula C., Fateixa, Sara, Nogueira, Helena I. S., Trindade, Tito

“…The implementation of polymer‐based composites provides a plausible alternative to develop efficient, handy and scalable substrates for surface‐enhanced Raman…”
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Assessing the Effectiveness of the IJmuiden Salt Screen Design for Nonuniform Selective Withdrawal by Physical and Numerical Modeling by de Fockert, Anton, O’Mahoney, Tom S. D, Nogueira, Helena I. S, Oldenziel, Gosse, Bijlsma, Arnout C, Janssen, Hans

“…AbstractSalt water intrusion through the New Sea Lock of IJmuiden, Netherlands requires mitigation to ensure availability of enough fresh water further inland…”
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A HNO3‐Responsive Aqueous Biphasic System for Metal Separation: Application towards CeIV Recovery by Schaeffer, Nicolas, Vargas, Silvia J. R., Passos, Helena, Brandão, Paula, Nogueira, Helena I. S., Svecova, Lenka, Papaiconomou, Coutinho, João A. P.

“…An acidic aqueous biphasic system (AcABS) presenting a desired and reversible phase transition with HNO3 concentration and temperature was developed herein as…”
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Dynamics of the head of gravity currents by Nogueira, Helena I. S., Adduce, Claudia, Alves, Elsa, Franca, Mário J.

“…The present work experimentally investigates the dynamics of unsteady gravity currents produced by lock-release of a saline mixture into a fresh water tank…”
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Effect of Density Differences on the Forces Acting on a Moored Vessel While Operating Navigation Locks by Nogueira, Helena I. S, van der Ven, Pepijn, O’Mahoney, Tom, De Loor, Alexander, van der Hout, Arne, Kortlever, Wim

“…AbstractThis paper investigates the effect of density differences on the forces acting on a moored vessel during lock operations, focusing on the effect of the…”
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Magnetite-Supported Gold Nanostars for the Uptake and SERS Detection of Tetracycline by Pinheiro, Paula C, Fateixa, Sara, Nogueira, Helena I S, Trindade, Tito

“…Magnetite nanoparticles (MNPs) decorated with gold nanostars (AuNSs) have been prepared by using a seed growth method without the addition of surfactants or…”
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Photoluminescent Lanthanide-Organic Bilayer Networks with 2,3-Pyrazinedicarboxylate and Oxalate by Soares-Santos, Paula C. R, Cunha-Silva, Luís, Paz, Filipe A. Almeida, Ferreira, Rute A. S, Rocha, João, Carlos, Luís D, Nogueira, Helena I. S

“…The hydrothermal reaction between lanthanide nitrates and 2,3-pyrazinedicarboxylic acid led to a new series of two-dimensional (2D) lanthanide-organic…”
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Comparison of the Electrochemical Response of Carbon-Fiber-Reinforced Plastic (CFRP), Glassy Carbon, and Highly Ordered Pyrolytic Graphite (HOPG) in Near-Neutral Aqueous Chloride Media by Ofoegbu, Stanley Udochukwu, Ferreira, Mário Guerreiro Silva, Nogueira, Helena I. S., Zheludkevich, Mikhail

“…Carbon-fiber-reinforced polymers (CFRP), being conductive, are capable of supporting cathodic oxygen reduction reactions (ORR) and thus promote galvanic…”
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SERS and Raman imaging as a new tool to monitor dyeing on textile fibres by Fateixa, Sara, Wilhelm, Manon, Nogueira, Helena I. S., Trindade, Tito

“…Textile fibres containing Ag nanoparticles have been widely explored for a number of antimicrobial fabrics. Moreover, it is well‐known that textile dyeing is a…”
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Colloidal nanomaterials for water quality improvement and monitoring by Estrada, Ana C, Daniel-da-Silva, Ana L, Leal, Cátia, Monteiro, Cátia, Lopes, Cláudia B, Nogueira, Helena I S, Lopes, Isabel, Martins, Maria J, Martins, Natércia C T, Gonçalves, Nuno P F, Fateixa, Sara, Trindade, Tito

“…Water is the most important resource for all kind forms of live. It is a vital resource distributed unequally across different regions of the globe, with…”
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Corrigendum: Colloidal nanomaterials for water quality improvement and monitoring by Estrada, Ana C, Daniel-da-Silva, Ana L, Leal, Cátia, Monteiro, Cátia, Lopes, Cláudia B, Nogueira, Helena I S, Lopes, Isabel, Martins, Maria J, Martins, Natércia C, Gonçalves, Nuno P F, Fateixa, Sara, Trindade, Tito

“…[This corrects the article DOI: 10.3389/fchem.2022.1011186.]…”
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Portable and benchtop Raman spectrometers coupled to cluster analysis to identify quinine sulfate polymorphs in solid dosage forms and antimalarial drug quantification in solution by AuNPs-SERS with MCR-ALS by Mazivila, Sarmento J, Nogueira, Helena I S, Páscoa, Ricardo N M J, Ribeiro, David S M, Santos, Joà O L M, Leitão, Joà O M M, Esteves da Silva, Joaquim C G

“…This paper proposes for the first time: (a) a qualitative analytical method based on portable and benchtop backscattering Raman spectrometers coupled to…”
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Novel Lanthanide Luminescent Materials Based on Complexes of 3-Hydroxypicolinic Acid and Silica Nanoparticles by Soares-Santos, Paula C. R, Nogueira, Helena I. S, Félix, Vitor, Drew, Michael G. B, Sá Ferreira, Rute A, Carlos, Luís D, Trindade, Tito

“…New lanthanide complexes of 3-hydroxypicolinic acid (HpicOH) were prepared:  [Ln(H2O)(picOH)2(μ-HpicO)]·3H2O (Ln = Eu, Tb, Er). The complexes were…”
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Carbamazepine polymorphism: A re-visitation using Raman imaging by Fateixa, Sara, Nogueira, Helena I.S., Trindade, Tito

“…[Display omitted] •It is essential to monitor polymorphic transformations induced by the thermal instability of poorly water-soluble drugs.•Raman imaging with…”
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Surface Modification of Graphene Nanosheets with Gold Nanoparticles: The Role of Oxygen Moieties at Graphene Surface on Gold Nucleation and Growth by Goncalves, Gil, Marques, Paula A. A. P, Granadeiro, Carlos M, Nogueira, Helena I. S, Singh, M. K, Grácio, J

“…Graphene sheets, which possess unique nanostructure and a variety of fascinating properties, are considered as promising nanoscale building blocks of new…”
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Dendrimer stabilized nanoalloys for inkjet printing of surface-enhanced Raman scattering substrates by Fernandes, Tiago, Martins, Natércia C.T., Fateixa, Sara, Nogueira, Helena I.S., Daniel-da-Silva, Ana L., Trindade, Tito

“…Paper-based substrates containing dendrimer-stabilized Au:Ag:PAMAM nanoalloys for the SERS probing of the pesticide thiram in an aqueous solution. [Display…”
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Use of Dialkyldithiocarbamato Complexes of Bismuth(III) for the Preparation of Nano- and Microsized Bi2S3 Particles and the X-ray Crystal Structures of [Bi{S2CN(CH3)(C6H13)}3] and [Bi{S2CN(CH3)(C6H13)}3(C12H8N2)] by Monteiro, Olinda C, Nogueira, Helena I. S, Trindade, Tito, Motevalli, Majid

“…A range of bismuth(III) dithiocarbamato complexes were prepared and characterized. The X-ray crystal structures of the compounds [Bi{S2CN(CH3)(C6H13)}3] (1)…”
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Nanoencapsulation of Luminescent 3-Hydroxypicolinate Lanthanide Complexes by Iwu, Kingsley O, Soares-Santos, Paula C. R, Nogueira, Helena I. S, Carlos, Luís D, Trindade, Tito

“…We have synthesized luminescent nanoparticles comprising a core of lanthanide complexes and shells of amorphous silica using reverse micelles as nanoreactors…”
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