Magnetic Behavior
Mostrando 1-12 de 353 artigos, teses e dissertações.
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1. Dextran Sulfate/Pramlintide Polyelectrolyte Nanoparticles as a Promising Delivery System: Optimization, Evaluation of Supramolecular Interactions and Effect on Conformational Stability of the Peptide Drug
In this study, we investigated the feasibility to obtain nanoparticles (NPs) by assembling pramlintide (Pram) with dextran sulfate (DexS), as a new approach for mucosal peptide delivery. DexS/Pram NPs were prepared by dropwise addition of a Pram solution to a DexS solution under magnetic stirring. The physicochemical characteristics of NPs and molecular inte
J. Braz. Chem. Soc.. Publicado em: 2021-08
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2. Comparison of Clinical Examination and Various Imaging Modalities in the Diagnosis of Head and Neck Cancer
Abstract Introduction Squamous cell Carcinoma of the Head and Neck (HNSCC) is the most common tumor entity of malignant processes in the head and neck area. Due to the metastasizing behavior of these tumors, the staging is indispensable for the treatment planning and requires imaging techniques, which are sensitive, specific, and as far as possible cost-eff
Int. Arch. Otorhinolaryngol.. Publicado em: 2021-04
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3. A Parametric Study of Inductive SWIPT Systems Assisted by Metamaterial Using Virtual Magnetic TL-Based Channel Modeling
Abstract This paper presents a general methodology based on the description of the inductive channel as virtual magnetic transmission-lines (VMGTLs). In comparison with other existing methods, VMGTL approach presents a better physical insight of the channel behavior since the model correctly preserves the energy flow between the transmitting and receiving co
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2021-03
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4. Improvement in borderline personality disorder symptomatology after repetitive transcranial magnetic stimulation of the dorsomedial prefrontal cortex: preliminary results
Objective: Current treatment for borderline personality disorder (BPD) involves psychological and pharmacological interventions. However, neuromodulation techniques such as repetitive transcranial magnetic stimulation (rTMS) may positively affect BPD symptomatology. The objective of this study was to evaluate the clinical and neuropsychological effects of r
Braz. J. Psychiatry. Publicado em: 2021-02
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5. A Calix[4]arene-Functionalized Perylene Imide and Its Luminescence Properties
In this study, new perylene-derived molecules were synthesized as perylene-3,4,9,10-tetracarboxylic acid monoanhydride monopotassium carboxylate 1; N-(3-propanol)perylene-3,4,9,10-tetracarboxylic-3,4-(monoimide)anhydride-9,10-acid potassium carboxylate 2; 5,11,17,23-tetra(tert-butyl)-25,27-bis(3’-bromopropoxy)-26,28-(dihydroxy)calix[4]arene 3; 5,11,17,23-t
J. Braz. Chem. Soc.. Publicado em: 2020-11
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6. Physics-Based Design of Microstrip Magnetic Dipoles Using Cavity Model
Abstract This paper presents an efficient technique of microstrip magnetic dipoles design that explores the physics ruling the antenna behavior not restricting to parametric analyses in a full-wave simulation software. The proposed approach makes use of the cavity model whose parameters are progressively enhanced by using full-wave electromagnetic simulation
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2020-03
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7. Comportamento magnético de materiais por meio da mecânica estatística
Resumo Um problema importante no estudo de materiais magnéticos é saber como esses sistemas se comportam na presença de um campo magnético externo. A resposta para esse problema está na susceptibilidade magnética. Neste trabalho realizamos uma abordagem estatística das propriedades magnéticas dos materiais levando em consideração suas interações
Rev. Bras. Ensino Fís.. Publicado em: 01/12/2019
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8. Uma andorinha só não faz verão: 160 anos do legado de Richard Carrington
Resumo No dia 1° de setembro de 1859, o astrônomo britânico Richard Carrington observou um comportamento anômalo no Sol. Aproximadamente 17 horas depois, efeitos magnéticos de escalas globais foram observados na Terra: auroras boreais e austrais em regiões de baixas latitudes, e falhas em equipamentos telegráficos na Europa e América do Norte. Hoje,
Rev. Bras. Ensino Fís.. Publicado em: 25/11/2019
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9. A Self-Assembled AMF-Responsive Nanoplatform Based on Pillar[5]arene and Superparamagnetic Nanoparticles for Controlled Release of Doxorubicin
An alternating magnetic field (AMF)-stimuli responsive nanodevice based on magnetic nanoparticles (MNP) functionalized with water-soluble carboxylate-substituted pillar[5]arene (CP[5]A), namely MNP-CP[5]A, as a multiplatform for cancer treatment has been designed. MNP-CP[5]A was loaded with doxorubicin (DOX), showing a loading capacity of 9.5 mg g-1. The nan
J. Braz. Chem. Soc.. Publicado em: 24/10/2019
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10. KLOBUCHAR AND NEQUICK G IONOSPHERIC MODELS COMPARISON FOR MULTI-GNSS SINGLE-FREQUENCY CODE POINT POSITIONING IN THE BRAZILIAN REGION
Abstract One of the main error sources in GNSS positioning comes from the ionosphere, an atmospheric layer that stays in the signal path between the satellite and the receiver. For single frequency positioning, the ionospheric effects can be minimized by using an ionospheric model e.g. Klobuchar or NeQuick G. These models are respectively associated to GPS a
Bol. Ciênc. Geod.. Publicado em: 14/10/2019
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11. Neuropsychology of the temporal lobe: Luria's and contemporary conceptions
RESUMO Atualmente, estudos de lesão cerebral implementam técnicas como tomografia computadorizada, ressonância magnética funcional, tomografia por emissão de fóton e tomografia por emissão de pósitrons. Estudos sobre cognição do neuropsicólogo Alexander Romanovich Luria foram realizados há vários anos sem o uso de tecnologia de imagem, com uma g
Dement. neuropsychol.. Publicado em: 23/09/2019
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12. Síntese e caracterização de cobaltita de níquel (NiCo2O4) obtida pelométodo dos precursorespoliméricos
RESUMO A cobaltita de níquel (NiCo2O4) de estrutura do tipo espinélio apresenta baixa estabilidade térmica em torno dos 400 °C, que ocasiona a perda de NiO, afetando de maneira significativa as propriedades físicas e estruturais do material produzido. Neste trabalho a cobaltita de níquel foi preparada pelo método dos precursores poliméricos. O materi
Matéria (Rio J.). Publicado em: 16/09/2019