Motivated by the ongoing discussion concerning the nature of the scalar resonances f 0 (980) and a 0 (980), the COSY-11 collaboration has taken exclusive data on the pp → ppK + K − reaction near the production threshold. A first total cross section σ = (1.80 ± 0.27 +0.28 −0.35) nb for the excess energy Q = 17 MeV has been determined. In contrary to the η, ω, and η ′ single meson production stud...

A engenharia de requisitos consiste em “um processo sistemático de desenvolvimento de requisitos através de um processo iterativo de análise do problema, documentação das observações resultantes e verificação acerca da precisão de entendimento” [1]. É uma atividade cujo sucesso depende diretamente da realização de uma comunicação eficaz. Diante disto, consideramos a modelagem de processos de ne...

The purpose of this study was to evaluate treatment effects of Jones jig appliance during class-II molar correction with a focus on the magnitude of maxillary first molar distalization, its tipping, extrusion and rotation as well as anchorage loss at premolarincisor unit. A complete set of pre and post distalization records including history, clinical examination, Lateral cephalometric radiogra...

OBJECTIVE The aim of this study was to investigate the effect of cavity design and the type of pulp capping materials on the fracture resistance of Class II composite restorations. MATERIALS AND METHODS Sixty freshly extracted, sound molar teeth were selected for the study. A dovetail cavity on the mesio-occlusal and a slot cavity on disto-occlusal surfaces of each tooth were prepared, and th...

Um eletrodo de carbono vítreo modificado por nanotubos de carbono de paredes múltiplas (NTCPM) e pelo complexo tiocianato de bis(piterpi) ferro(II) (piterpi = 4’-(4-piridil)-2,2’:6’,2”terpiridina) foi investigado através de métodos voltamétricos em solução de tampão acetato (pH 5). A performance do eletrodo modificado pelo complexo de ferro(II)/NTCPM foi avaliada por voltametria de pulso difere...

OBJECTIVE The aim of this study was to assess artifacts induced by metallic restorations in three-dimensional (3D) dental surface models derived by cone-beam computed tomography (CBCT). METHODS Fifteen specimens, each with four extracted human premolars and molars embedded in a plaster block, were scanned by CBCT before and after the cavitated second premolars were restored with dental amalga...

OBJECTIVES The purpose of this study was to evaluate the proximity of the mandibular molar apex to the buccal bone surface in order to provide anatomic information for apical surgery. MATERIALS AND METHODS Cone-beam computed tomography (CBCT) images of 127 mandibular first molars and 153 mandibular second molars were analyzed from 160 patients' records. The distance was measured from the bucc...

Voltamogramas cíclicos de nitazoxanida medidos no eletrodo de gota de mercúrio no tampão universal Britton-Robinson com valores de pH de 2 a 11 contendo 20% (v/v) de etanol exibiram um único pico catódico irreversível de 4-elétrons, correspondendo à redução de seu grupo NO 2 para hidroxilamina. Observou-se que a nitazoxanida adsorve na superfície do eletrodo de mercúrio numa monocamada com cobe...

O presente estudo teve por objetivo verificar se o tamanho dos municípios em que os atletas brasileiros de rendimento nascem ou residem gera influência na obtenção subsídio pelo governo federal, além apontar fatores como índices desenvolvimento humano, densidade demográfica e investimento municipal no esporte também exercem influência. A amostra consistiu 2033 apresentaram nascidos residentes c...