Magnetic Materials
Mostrando 25-36 de 321 artigos, teses e dissertações.
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25. Comparative Study between Multi-slice Computed Tomographic Arthrography and Arthroscopy in the Evaluation of Rotator Cuff Tears
Resumo Objetivo Comparar os achados por imagem das alterações anatômicas da artrotomografia computadorizada multi-slice na avaliação das lesões do manguito rotador do ombro e correlacioná-los com os achados da artroscopia (exame diagnóstico padrão-ouro). Materiais e Métodos Estudo longitudinal, prospectivo, comparativo de acurácia diagnóstica,
Rev. bras. ortop.. Publicado em: 14/11/2019
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26. Increased assimilates in lily yearling bulblets by fertilizer supplement of magnetic nano-composite
Abstract In bulb production period, the promotion of photosynthesis and, consequently, increased synthesis of carbohydrates have the particular importance to enhance the size and quality of the bulbs. The aim of this study was to investigate the effects of chitosan and magnetism on the synthesis of photosynthetic compounds. Magnetic nano-composite (MN) and c
Ornam. Hortic.. Publicado em: 28/10/2019
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27. Enrichment of Copper, Lead, and Tin by Mechanical Dry Processing of Obsolete Printed Circuit Board Residues
Waste printed circuit boards (WPCB) residues were mechanically processed to concentrate their metal content aiming to reduce costs of the subsequent recovery of copper, tin, and lead. A fully dry route was proposed to avoid the generation of liquid effluents that would require additional treatment. Firstly, 10.7% of the residue was segregated by magnetic sep
Mat. Res.. Publicado em: 24/10/2019
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28. Modification of Chitosan by Zincke Reaction: Synthesis of a Novel Polycationic Chitosan-Pyridinium Derivative
Chitosan is a biodegradable aminopolysaccharide produced by deacetylation of acetamide groups of chitin, one of the most abundant organic materials in nature. Many different types of organic reactions have been described to modify the functional groups of chitosan and produce materials with applications in a large number of areas. However, the Zincke reactio
J. Braz. Chem. Soc.. Publicado em: 24/10/2019
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29. Development of an Extraction Protocol for Fetal Sexing from the Fourth Week of Gestation by Real Time PCR
Abstract Low number of fetal cells in maternal blood limited the use of fetal materials in diagnostic and clinical applications. This research developed a technology which allowed the extraction of fetal DNA by a non-invasive method that offers no risk to the mother or fetus. A total of 132 pregnant women participated in this inquiry. The DNA extraction was
Braz. arch. biol. technol.. Publicado em: 24/10/2019
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30. Gold Nanoparticles and [PEDOT-Poly(D,L-Lactic Acid)] Composite: Synthesis, Characterization and Application to H2O2 Sensing
Biocompatible electrochemical devices are challenging to develop due to the toxicity of many advanced electrode materials and the difficulty to degrade the discarded material. Few recent advances were made in the synthesis of conducting biodegradable composites of polymers for electrode materials. In this article we describe the synthesis of two new inorgani
J. Braz. Chem. Soc.. Publicado em: 21/10/2019
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31. DESENVOLVIMENTO DE METODOLOGIA DE REVELAÇÃO DE IMPRESSÃO DIGITAL LATENTE COM CHALCONAS
Fingerprints are unique for each individual contributing to human identification in forensic cases. Visualization of latent fingerprints usually involves the use of a chemical substance that creates a contrast between fingerprint residues and the surface on which the print was deposited. Commercial powders used as fingerprint developers by papilloscopy have
Quím. Nova. Publicado em: 21/10/2019
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32. Magnetic Materials Enriched with Strontium: a Study of the use as Catalysts in the Transesterification Reaction of Babassu Oil
This work described a new magnetic material enriched with strontium as catalyst to produce babassu biodiesel. The use of magnetic materials has attracted attention due to easy and fast separation from reaction medium. Moreover, they are ecologically correct, due to they generate less discards to the environment. Techniques of analysis and characterization we
Mat. Res.. Publicado em: 30/09/2019
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33. Diffusion-weighted imaging and apparent diffusion coefficient values for evaluating terminal ileitis in patients with Crohn’s disease
Resumo Objetivo: Determinar a acurácia da ressonância magnética com difusão na identificação de sinais de inflamação ileal distal em pacientes com doença de Crohn. Materiais e Métodos: Estudo retrospectivo com 38 pacientes consecutivos com doença de Crohn que foram submetidos a enterografia por ressonância magnética. Os pacientes foram alocado
Radiol Bras. Publicado em: 02/09/2019
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34. Relationship between right atrium area and right ventricular ejection fraction on magnetic resonance imaging: comparison with other prognostic markers in patients with pulmonary arterial hypertension
Resumo Objetivo: Comparar a área do átrio direito (AD) e a fração de ejeção do ventrículo direito (FEVD) com outros marcadores prognósticos conhecidos em pacientes com hipertensão arterial pulmonar (HAP). Materiais e Métodos: Identificamos, retrospectivamente, 74 pacientes com diagnóstico de HAP por cateterismo cardíaco direito em um centro de
Radiol Bras. Publicado em: 02/09/2019
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35. Dynamic Arrays Based on Magnetically Controlled Particles: Synthesis and Application
Growth mechanisms of dynamic granular arrays based on magnetically controlled particles are presented. Method of the external rotating magnetic field (ERMF), based on a dipole interaction of magnetic spherical Fe3O4 particles in highly ordered volume arrays is proposed and a design for its practical implementation is developed. The magnetic assembly can resu
Mat. Res.. Publicado em: 19/08/2019
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36. Quantitative evaluation of brain volume among elderly individuals in São Paulo, Brazil: a population-based study
Resumo Objetivo: Analisar, quantitativamente, o volume cerebral de idosos em uma amostra de base populacional em São Paulo. Materiais e Métodos: O estudo é uma avaliação radiológica e análise quantitativa baseada em voxel com alinhamento de superfície de 525 imagens de ressonância magnética de participantes de uma coorte de idosos (SABE - Saúd
Radiol Bras. Publicado em: 15/08/2019