Phase Shift
Mostrando 1-12 de 547 artigos, teses e dissertações.
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1. Enhancement patterns of adrenal nodules on magnetic resonance imaging
ABSTRACT Objective: To compare enhancement patterns of typical adrenal adenomas, lipid-poor adenomas, and non-adenomas on magnetic resonance imaging (MRI). Materials and Methods: Evaluation of adrenal nodules larger than 1.0 cm, with at least 2-year follow-up, evaluated on MRI in January 2007 and December 2016. Two different protocols were included - upper
International braz j urol. Publicado em: 2022
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2. Analysis of the agricultural productivity of the sugarcane crop in regions of new agricultural expansions of sugarcane
Resumo O lançamento dos veículos bicombustíveis, no ano de 2003, propiciou a retomada da importância da produção de etanol e, consequentemente, numa nova fase de expansão do cultivo de cana-de-açúcar no Brasil. Embora o aumento da área de produção e da quantidade produzida de cana-de-açúcar mereça destaque no agronegócio brasileiro, o mesmo
Gest. Prod.. Publicado em: 12/08/2019
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3. DEVELOPMENT AND VALIDATION OF A LEADERSHIP TRAINING PROGRAM FOR NURSES
RESUMO Objetivos: identificar as estratégias que facilitam o desenvolvimento da liderança, correlacionando-as com variáveis de caracterização, e construir e validar um programa para treinamento em liderança para enfermeiros. Método: desenvolvido em duas fases. Primeira: estudo transversal, realizado em um hospital geral em São Paulo, Brasil. Os 70
Texto contexto - enferm.. Publicado em: 20/05/2019
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4. A Comparative Analysis of BaTiO3/(Ba,Sr)TiO3 and BaTiO3/(Ba,Sr)TiO3/SrTiO3 Artificial Superlattices via Raman Spectroscopy
BaTiO3/Ba50Sr50TiO3 and BaTiO3/Ba50Sr50TiO3/SrTiO3 superlattices are characterized via Raman spectroscopy. Special attention is paid to a comprehensive analysis of their polarized Raman spectra, especially, within a soft mode (E(1TO)) range. The shift of E(1TO) soft mode is found to be more pronounced for BaTiO3/Ba50Sr50TiO3/SrTiO3 sample than for BaTiO3/Ba5
Mat. Res.. Publicado em: 14/11/2018
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5. Coupled monolithic columns as an alternative for the use of viscous ethanol–water mobile phases on chromatographic fingerprinting complex samples
ABSTRACT Concepts of sustainability have received attention from people involved in investigation of nature-derived matrices. The effects of concomitant pollutant activities are cumulative and harmful to the environment from which these matrices are obtained. High performance liquid chromatography analyses generate millions of litters of chemical waste world
Rev. bras. farmacogn.. Publicado em: 2018-06
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6. Microstrip Hybrid Coupler with a Wide Stop-Band Using Symmetric Structure for Wireless Applications
Abstract In this paper, a wide stop-band microstrip coupler is presented. The proposed structure consists of coupled lines and step impedance cells, which are integrated to operate at 2.82 GHz for wireless applications. This coupler is formed by a symmetric structure so that the locations of the output ports relative to input are quite similar. Accordingly,
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2018-03
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7. Peculiar Properties of Phase Transitions in Na0.5Bi0.5TiO3-xBaTiO3 (0
Na0.5Bi0.5TiO3-xBaTiO3 (0
Mat. Res.. Publicado em: 26/02/2018
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8. LCL-T Resonant Converter Based on Dual Active Bridge Topology in Solar Energy Applications
ABSTRACT: Resonant LCL-T converter can operate as stable voltage source, being fed from current, for instance, the photovoltaic battery. It is shown that LCL-T resonant tank has intrinsic ability to convert stable AC current into stable AC voltage thus parametrically regulating output voltage at a fixed value. This mode of operation is made possible by the u
J. Aerosp. Technol. Manag.. Publicado em: 2017-06
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9. Structural, Atomic and Electrostatic Force Microscopy Analyses on YBCO/PBCO/LCMO Superlattices
In order to study the influence of the insulator layer thickness in heterojunctions, (YBa2Cu3O7-δ[20nm]/ PrBa2Cu3Oy/La1/3Ca2/3MnO3[20nm])x20 superlattices were prepared by pulsed laser deposition using three PrBa2Cu3Oy layer thicknesses and two different sequences of deposition. Sample characterization showed primitive orthorhombic crystalline arrangement f
Mat. Res.. Publicado em: 03/04/2017
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10. Characterization of Sn Doped ZnS Thin Films Synthesized by CBD
Zinc sulphide (ZnS) thin film were prepared using chemical bath deposition (CBD) process and tin (Sn) doping was successfully carried out in ZnS. Structural, morphological and microstructural characterization was carried out using XRD, TEM, FESEM and EDX. XRD and SAED pattern confirms presence of hexagonal phase. Reitveld analysis using MAUD software was use
Mat. Res.. Publicado em: 09/02/2017
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11. APPLICATION OF OPTICAL METHOD IN MEASURING MECHANICAL VIBRATIONS IN A CANTILEVER BEAM
ABSTRACT The pertinent literature discloses a family of optical profile measuring techniques highlighting the moiré methods. The Moiré technique is based on the interference of two superimposed optical grids which produce fringe patterns which can be processed to analyze the DYNAMIC MEASUREMENT IN MATERIALS mechanical behavior. The goal of this research is
Eng. Agríc.. Publicado em: 2017-02
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12. The role of melatonin in diabetes: therapeutic implications
Melatonin referred as the hormone of darkness is mainly secreted by pineal gland, its levels being elevated during night and low during the day. The effects of melatonin on insulin secretion are mediated through the melatonin receptors (MT1 and MT2). It decreases insulin secretion by inhibiting cAMP and cGMP pathways but activates the phospholipaseC/IP3 path
Arch. Endocrinol. Metab.. Publicado em: 28/08/2015