V. S. Amaral
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View article: COLECISTITE AGUDA: GESTÃO ATUAL, TEMPO CIRÚRGICO E RESULTADOS CLÍNICOS
COLECISTITE AGUDA: GESTÃO ATUAL, TEMPO CIRÚRGICO E RESULTADOS CLÍNICOS Open
A colecistite aguda é uma das principais emergências abdominais, com elevada incidência mundial e impacto clínico e econômico expressivo. Tradicionalmente, a conduta cirúrgica era postergada até a resolução do processo inflamatório, porém …
View article: Chitosan/Alginate Polyelectrolyte Magnetic Gel Nanoarchitectonics with Tunable Mechanical Properties for Magnetic Hyperthermia and Sustained Release of 5-Fluorouracil
Chitosan/Alginate Polyelectrolyte Magnetic Gel Nanoarchitectonics with Tunable Mechanical Properties for Magnetic Hyperthermia and Sustained Release of 5-Fluorouracil Open
Chitosan-based hydrogels hold promise as drug delivery systems for cancer therapy, but the poor mechanical properties often limit the biological application, requiring chemical cross-linking to improve sustained drug release. Besides, the …
View article: Uso da cirurgia robótica na histerectomia: vantagens, limitações e comparação com outras abordagens cirúrgicas
Uso da cirurgia robótica na histerectomia: vantagens, limitações e comparação com outras abordagens cirúrgicas Open
A histerectomia é um dos procedimentos ginecológicos mais realizados no mundo, com indicações que variam desde patologias benignas até malignas. Com o avanço das tecnologias cirúrgicas, a via robótica tem ganhado destaque por oferecer maio…
View article: AS (IN)EFICIÊNCIAS COMPROBATÓRIAS DA LEGISLAÇÃO BRASILEIRA E OS DESAFIOS DA PERSECUÇÃO PENAL NOS CRIMES DE INVASÃO DE DISPOSITIVOS INFORMÁTICOS: UMA ANÁLISE À LUZ DAS LEIS 12.737/2012 E 14.155/2021
AS (IN)EFICIÊNCIAS COMPROBATÓRIAS DA LEGISLAÇÃO BRASILEIRA E OS DESAFIOS DA PERSECUÇÃO PENAL NOS CRIMES DE INVASÃO DE DISPOSITIVOS INFORMÁTICOS: UMA ANÁLISE À LUZ DAS LEIS 12.737/2012 E 14.155/2021 Open
This study investigates the effectiveness of Laws 12.737/2012 and 14.155/2021 in containing and prosecuting computer hacking crimes in Brazil, addressing persistent evidentiary inefficiencies. It analyzes current legislation, the evolution…
View article: Laser-induced copper superhydrophobicity to improve heat transfer and reduce limestone deposition in water heating systems
Laser-induced copper superhydrophobicity to improve heat transfer and reduce limestone deposition in water heating systems Open
Funding Information: This work was developed within the scope of the projects: SMART GREEN HOMES, Project 7678 (POCI-01-0247-FEDER-007678), supported by the European Regional Development Fund (FEDER) through Portugal 2020 and the Competiti…
View article: Hg sorption by Fe3O4/SiO2 core-shell nanoparticles functionalized with dithiocarbamate: Determining Hg coordination with a combined experimental and ab-initio approach
Hg sorption by Fe3O4/SiO2 core-shell nanoparticles functionalized with dithiocarbamate: Determining Hg coordination with a combined experimental and ab-initio approach Open
Nanoparticles functionalized with dithiocarbamate groups are well known for their high uptake efficiency of Hg(II) from water but where and how Hg coordinates is still an open question. In the present work, Perturbed Angular Correlations s…
View article: Extracting phonon coupling parameters from multi color center photoluminescence
Extracting phonon coupling parameters from multi color center photoluminescence Open
Vibronic coupling of color centers plays a crucial role in their effectiveness for quantum technologies. This study presents a novel approach to extract key parameters, including the Huang–Rhys factor and the one-phonon coupling function, …
View article: An Injectable Composite Co‐Assembled Dehydropeptide‐Based Magnetic/Plasmonic Lipogel for Multimodal Cancer Therapy
An Injectable Composite Co‐Assembled Dehydropeptide‐Based Magnetic/Plasmonic Lipogel for Multimodal Cancer Therapy Open
Advancing therapeutic effectiveness through the strategic co‐delivery of drugs in a sequential manner represents a compelling strategy. However, achieving precise and selective release of chemotherapeutic agents remains a formidable challe…
View article: Structural formation yield of GeV centers from implanted Ge in diamond
Structural formation yield of GeV centers from implanted Ge in diamond Open
In order to study the structural formation yield of germanium-vacancy (GeV) centers from implanted Ge in diamond, we have investigated its lattice location by using the β − emission channeling technique from the radioactive isotope 75 Ge (…
View article: Elastic Liposomes Containing Calcium/Magnesium Ferrite Nanoparticles Coupled with Gold Nanorods for Application in Photothermal Therapy
Elastic Liposomes Containing Calcium/Magnesium Ferrite Nanoparticles Coupled with Gold Nanorods for Application in Photothermal Therapy Open
This work reports on the design, development, and characterization of novel magneto-plasmonic elastic liposomes (MPELs) of DPPC:SP80 (85:15) containing Mg0.75Ca0.25Fe2O4 nanoparticles coupled with gold nanorods, for topical application of …
View article: Eco-friendly synthesis of fluorescent cobalt-doped manganese ferrites for thermo-therapeutic applications
Eco-friendly synthesis of fluorescent cobalt-doped manganese ferrites for thermo-therapeutic applications Open
The synthesis of high-quality nanoparticles for biomedical applications through environmentally friendly methods is a major challenging task. In this work, oxidative precipitation and a novel method, oxidative hydrothermal synthesis, are e…
View article: Hg Sorption by Dithiocarbamate-Functionalized Nanoparticles: Determining Hg Coordination with a Combined Experimental and Ab-Initio Approach
Hg Sorption by Dithiocarbamate-Functionalized Nanoparticles: Determining Hg Coordination with a Combined Experimental and Ab-Initio Approach Open
View article: Insights into Temperature Simulation and Validation of Fused Deposition Modeling Processes
Insights into Temperature Simulation and Validation of Fused Deposition Modeling Processes Open
In fused deposition modeling (FDM), the cooling history impacts the bonding between filaments and layers. The existence of thermal gradients can cause non-homogeneous properties and localized stress points that may affect the individual fi…
View article: Extracting phonon coupling parameters from multi color center photoluminescence
Extracting phonon coupling parameters from multi color center photoluminescence Open
Scripts using the VKMS.jl software package and datasets generated for and analyzed in the paper "Extracting phonon coupling parameters from multi color center photoluminescence" which is currently under review.
View article: Extracting phonon coupling parameters from multi color center photoluminescence
Extracting phonon coupling parameters from multi color center photoluminescence Open
<p>Scripts using the VKMS.jl software package and datasets generated for and analyzed in the paper "Extracting phonon coupling parameters from multi color center photoluminescence" which is currently under review.</p>
View article: Magnetoliposomes with Calcium-Doped Magnesium Ferrites Anchored in the Lipid Surface for Enhanced DOX Release
Magnetoliposomes with Calcium-Doped Magnesium Ferrites Anchored in the Lipid Surface for Enhanced DOX Release Open
Nanotechnology has provided a new insight into cancer treatment by enabling the development of nanocarriers for the encapsulation, transport, and controlled release of antitumor drugs at the target site. Among these nanocarriers, magnetic …
View article: Chitosan/Alginate Nanogels Containing Multicore Magnetic Nanoparticles for Delivery of Doxorubicin
Chitosan/Alginate Nanogels Containing Multicore Magnetic Nanoparticles for Delivery of Doxorubicin Open
In this study, multicore-like iron oxide (Fe3O4) and manganese ferrite (MnFe2O4) nanoparticles were synthesized and combined with nanogels based on chitosan and alginate to obtain a multimodal drug delivery system. The nanoparticles exhibi…
View article: Mapping the magnetocaloric effect at the microscale on a ferromagnetic shape memory alloy with infrared thermography
Mapping the magnetocaloric effect at the microscale on a ferromagnetic shape memory alloy with infrared thermography Open
An innovative study of the magnetocaloric effect (MCE) was performed by mapping the effect based on direct measurements of the temperature change during magnetic field cycles with microscopic resolution (85 μ m) on a Co-doped Ni–Mn–Ga bulk…
View article: Bio-Based Polyurethane Foams from Kraft Lignin with Improved Fire Resistance
Bio-Based Polyurethane Foams from Kraft Lignin with Improved Fire Resistance Open
Rigid polyurethane foams (RPUFs) were synthesized using exclusively lignin-based polyol (LBP) obtained via the oxyalkylation of kraft lignin with propylene carbonate (PC). Using the design of experiments methodology combined with statistic…
View article: Simulating the giant magnetocaloric effect-from mean-field theory to microscopic models
Simulating the giant magnetocaloric effect-from mean-field theory to microscopic models Open
Magnetocaloric materials are recognized as one of the major classes of magnetic materials for energy applications, and can be either employed as refrigerants in heat-pumping devices, or in thermomagnetic generators for energy conversion/ha…
View article: Oxidative Precipitation Synthesis of Calcium-Doped Manganese Ferrite Nanoparticles for Magnetic Hyperthermia
Oxidative Precipitation Synthesis of Calcium-Doped Manganese Ferrite Nanoparticles for Magnetic Hyperthermia Open
Superparamagnetic nanoparticles are of high interest for therapeutic applications. In this work, nanoparticles of calcium-doped manganese ferrites (CaxMn1−xFe2O4) functionalized with citrate were synthesized through thermally assisted oxid…
View article: Magnetoresponsive Optical Fiber with Fuse‐Effect‐Induced Fluorinated Graphene Oxide Core
Magnetoresponsive Optical Fiber with Fuse‐Effect‐Induced Fluorinated Graphene Oxide Core Open
Optical fibers have been used massively in communications, specifically silica fibers for long‐distance communications and polymer optical fibers (POFs) for household use. Despite their numerous advantages, the use of optical fibers with h…
View article: Tuning the drug multimodal release through a co-assembly strategy based on magnetic gels
Tuning the drug multimodal release through a co-assembly strategy based on magnetic gels Open
Co-assembly of (di)phenylalanine-functionalized magnetic nanoparticles and liposomes with supramolecular peptide-based hydrogels for tunability of gel's properties, and modulation of both passive and active doxorubicin release.
View article: Disentangling the phase sequence and correlated critical properties in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>Bi</mml:mi><mml:mrow><mml:mn>0.7</mml:mn></mml:mrow></mml:msub><mml:msub><mml:mi>La</mml:mi><mml:mrow><mml:mn>0.3</mml:mn></mml:mrow></mml:msub><mml:msub><mml:mi>FeO</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:mrow></mml:math> by structural studies
Disentangling the phase sequence and correlated critical properties in by structural studies Open
Funding: The authors would like to acknowledge Fundação para a Ciência e Tecnologia (FCT) through projects NORTE/01/0145/FEDER/028538, CERN/FIS-PAR/0005/2017, CERN/FIS-TEC/0003/2019, PTDC/FIS-MAC/29454/2017, and when appropriate cofinanced…
View article: Magnetoliposomes Based on Shape Anisotropic Calcium/Magnesium Ferrite Nanoparticles as Nanocarriers for Doxorubicin
Magnetoliposomes Based on Shape Anisotropic Calcium/Magnesium Ferrite Nanoparticles as Nanocarriers for Doxorubicin Open
Multifunctional lipid nanocarriers are a promising therapeutic approach for controlled drug release in cancer therapy. Combining the widely used liposome structure with magnetic nanoparticles in magnetoliposomes allies, the advantages of u…
View article: Novel magnetoliposomes based on shape-anisotropic nanoparticles for combined chemotherapy and magnetic hyperthermia
Novel magnetoliposomes based on shape-anisotropic nanoparticles for combined chemotherapy and magnetic hyperthermia Open
In this work, a new method for magnetoliposomes synthesis with improved and adequate structural, physicochemical and magnetic properties was developed. The overall results confirmed the development of a promising new method for the synthes…
View article: Free Molecule Studies by Perturbed <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>γ</mml:mi><mml:mtext>−</mml:mtext><mml:mi>γ</mml:mi></mml:mrow></mml:math> Angular Correlation: A New Path to Accurate Nuclear Quadrupole Moments
Free Molecule Studies by Perturbed Angular Correlation: A New Path to Accurate Nuclear Quadrupole Moments Open
Accurate nuclear quadrupole moment values are essential as benchmarks for nuclear structure models and for the interpretation of experimentally determined nuclear quadrupole interactions in terms of electronic and molecular structure. Here…
View article: Hg adatoms on graphene: A first-principles study
Hg adatoms on graphene: A first-principles study Open
The interest in understanding the interaction between graphene and atoms that are adsorbed on its surface (adatoms) spans a wide range of research fields and applications, for example, to controllably change the properties of graphene in e…
View article: A geometry-independent moment correction method for the Magnetic Property Measurement 3 Superconducting Quantum Interference Device-Vibrating Sample Magnetometer
A geometry-independent moment correction method for the Magnetic Property Measurement 3 Superconducting Quantum Interference Device-Vibrating Sample Magnetometer Open
The sensitivity and automation capabilities of modern superconducting quantum interference device (SQUID) magnetometers are currently unmatched. The measured moment values are, however, prone to deviations from their actual value due to ge…
View article: Broad Multi-Parameter Dimensioning of Magnetocaloric Systems Using Statistical Learning Classifiers
Broad Multi-Parameter Dimensioning of Magnetocaloric Systems Using Statistical Learning Classifiers Open
Prototyping innovative energy devices is a complex multivariable dimensioning problem. For the case of magnetocaloric systems, one aims to obtain an optimized balance between energy conversion performance, useful power generated, and power…