Coefficients Of Accuracy
Mostrando 1-12 de 144 artigos, teses e dissertações.
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1. Semi-analytical Equations for Designing Terahertz Graphene Dipole Antennas on Glass Substrate
Abstract Semi-analytical equations are developed for aiding the process of designing terahertz graphene-based rectangular dipole antennas lying on glass substrates. It directly provides the dipole length required for obtaining resonance at a desired frequency since antenna width and graphene chemical potential are known. By using the finite-difference time-d
Journal of Microwaves, Optoelectronics and Electromagnetic Applications. Publicado em: 2022
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2. Use of Direct Aqueous Injection and Solid Phase Extraction Coupled with Hydrophilic Interaction Chromatography to Analyze Haloacetic Acids in Drinking Water Samples
In this study, two analytical methods were evaluated to determine haloacetic acids (HAAs) in drinking water samples. Direct aqueous injection (DAI) and solid phase extraction (SPE) were evaluated and determination was performed by liquid chromatography tandem mass spectrometry (LC-MS/MS) with a hydrophilic interaction chromatography (HILIC) analytical column
Journal of the Brazilian Chemical Society. Publicado em: 2022
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3. TITULADOR AUTOMÁTICO EM FLUXO-BATELADA UTILIZANDO UM HARDWARE DE CÓDIGO FONTE ABERTO ARDUINO
This work describes the development of an automatic titrometric method in flow-batch with potentiometric detection using alternative and easily accessible materials. Arduino board and its modules, solenoid valves to control the flow rate, peristaltic pump to propel and suction fluids and tubes of inert material to connect the different parts of the Flow-Batc
Quím. Nova. Publicado em: 2021-03
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4. FASE SENSORA DE POLI(CLORETO DE VINILA) NA DETECÇÃO DE 17β-ESTRADIOL EM MEIO AQUOSO UTILIZANDO ESPECTROSCOPIA NO INFRAVERMELHO MÉDIO E QUIMIOMETRIA
In recent years, estrogens have gained notable attention among emerging pollutants, increasingly leading to the need for less laborious analytical methods. Optical sensors are a promising technology for the determination of chemical contaminants in water, acting as an alternative screening method. The aim of this work was to evaluate the performance of poly(
Quím. Nova. Publicado em: 2020-09
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5. OTIMIZAÇÃO E VALIDAÇÃO DE MÉTODO BASEADO EM QuEChERS PARA DETERMINAÇÃO DE CONSERVANTES EM COSMÉTICOS POR HPLC-DAD
Parabens are widely used as preservatives in the last decades. Others preservatives such as 2-phenoxyethanol, which in addition to his good antimicrobial activity, has low allergenic potential as well others properties of interest to the cosmetic industry. In this work was developed a method for determination of methylparaben (MP), propylparaben (PP) and 2-p
Quím. Nova. Publicado em: 2020-02
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6. Confiabilidade da ultrassonografia de músculos esqueléticos em pacientes críticos de trauma
RESUMO Objetivo: Avaliar a segurança e a viabilidade da avaliação por ultrassonografia do quadríceps no pronto-socorro, e avaliar a confiabilidade intra e entre avaliadores para aquisição e análise de imagens de ultrassonografia da espessura e da ecogenicidade muscular em pacientes críticos de trauma. Métodos: Estudo de precisão diagnóstica real
Rev. bras. ter. intensiva. Publicado em: 20/01/2020
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7. Parâmetros Psicométricos da Prova de Consciência Morfológica Derivacional
Resumo A aprendizagem da escrita requer múltiplas habilidades linguístico-cognitivas, entre elas a consciência fonológica e a morfológica. Dada a escassez de instrumentos para avaliar as habilidades morfológicas, o estudo objetivou elaborar e analisar os parâmetros psicométricos de uma prova de consciência morfológica derivacional. Participaram 111
Psico-USF. Publicado em: 02/12/2019
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8. Parent SNAP-IV rating of attention-deficit/hyperactivity disorder: accuracy in a clinical sample of ADHD, validity, and reliability in a Brazilian sample,
RESUMO Objetivo: Investigar as propriedades psicométricas da versão curta ou MTA da escala Swanson, Nolan e Pelham, versão IV (SNAP-IV), que mede os sintomas do transtorno de déficit de atenção/hiperatividade e transtorno desafiador de oposição. Métodos: Os participantes incluíram 765 pais de crianças de 4 a 16 anos (641 crianças sem transtorno
J. Pediatr. (Rio J.). Publicado em: 25/11/2019
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9. The sensitivity, specificity, and agreement of a point of care method: an assessment of the diagnostic accuracy
Resumo O uso de novas tecnologias pode melhorar o screening em comunidades de difícil acesso à saúde. O objetivo deste artigo é avaliar a sensibilidade, especificidade e concordância do teste de point of care em comparação com método laboratorial para dosagem de Glicose (GLI), Triglicerídeo (TG) e Colesterol total (CT). Estudo prospectivo com dados
Ciênc. saúde coletiva. Publicado em: 28/10/2019
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10. Free Vibration of flexible soft-core sandwiches according to layerwise theories differently accounting for the transverse normal deformability
Abstract This study aims to generalize a previously developed accurate and inexpensive 3-D zig-zag theory up to an arbitrary representation form and to determine which simplifications are yet accurate in determining transverse shear and normal stress/deformation effects on vibrations of soft-core sandwiches with not moving middle/neutral plane (pumping). Nat
Lat. Am. j. solids struct.. Publicado em: 28/10/2019
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11. 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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12. Agreement between upper endoscopy and esophagography in the diagnosis of megaesophagus in Chagas disease
Abstract INTRODUCTION The diagnosis and classification of megaesophagus can be challenging in patients with Chagas disease. The present study aimed to evaluate the agreement between upper endoscopies and esophagographies for the diagnosis and classification of megaesophagus in Chagas disease. METHODS: A cross-sectional study of 50 patients with Chagas dis
Rev. Soc. Bras. Med. Trop.. Publicado em: 07/03/2019