Aspect Ratio
Mostrando 1-12 de 181 artigos, teses e dissertações.
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1. NUMERICAL AND EXPERIMENTAL INVESTIGATION OF AIR-WATER SYSTEM TO SIMULATE BUBBLE DYNAMICS IN LIQUID SODIUM POOL
Abstract The dynamics of rising bubbles in a liquid sodium pool plays a significant role in the estimation of the radiological source term during anticipated transients and normal operation of a fast reactor. Sodium is chemically reactive with air and water. Therefore, carrying out experiments using sodium on a reactor scale level requires extra precautions.
Braz. J. Chem. Eng.. Publicado em: 13/01/2020
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2. Single tooth morse taper implant placement and restoration immediately after extraction
RESUMO Objetivo: Analisar os resultados estéticos e funcionais da reabilitação bucal com implante cone morse e prótese provisória unitária imediatamente após exodontia. Métodos: Estudo clínico longitudinal retrospectivo de 57 pacientes submetidos a um protocolo de reabilitação bucal com implantes osseointegráveis cone morse (Ankylos® Classic.)
RGO, Rev. Gaúch. Odontol.. Publicado em: 28/10/2019
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3. Improved Functionalization of Multiwalled Carbon Nanotubes in Ultra-Low Acid Volume: Effect of Solid/Liquid Interface
A comprehensive study of a less harmful functionalization of multiwalled carbon nanotubes (MWCNT) was performed. The influence of ultrasonic cavitation and solid/liquid interface was indirectly evaluated by statistical characterization of MWCNT aspect ratio and degree of functionalization. MWCNT aspect ratio was determined through hundreds of electron micros
J. Braz. Chem. Soc.. Publicado em: 24/10/2019
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4. Phase Separation and Development of the Microstructure for Stainless Steel to Copper Alloy Weld Joints Using a Fiber Laser
ABSTRACT Stainless steel and copper alloys joints are often applied in aerospace, marine and power industries where both high thermal and electrical conductivity (Cu) and corrosion resistance (steel) are required. In the aerospace industry, in particular for the combustion chamber of rocket engines, copper and steel combinations offer perfect materials selec
J. Aerosp. Technol. Manag.. Publicado em: 10/10/2019
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5. Palatal Schwannoma: An Analysis of 45 Literature Reports and of an Illustrative Case
Abstract Introduction Schwannomas are benign tumors originating from differentiated Schwann cells. Being the least common intraoral neoplasm of neural origin, it is rarely seen in the palate. The literature lacks an extensive review of intraoral schwannoma confined to the palate. Objective To review previously reported cases of palatal schwannoma along w
Int. Arch. Otorhinolaryngol.. Publicado em: 07/10/2019
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6. Influencia del ácido ascórbico en el crecimiento de nanorods de oro con banda de plasmón longitudinal en el infrarrojo cercano-NIR
ABSTRACT The present work reports the ascorbic acid effect (0,60-0,98 µM) on the aspect ratio (AR) of gold nanorods with bands of longitudinal plasmon (LP) in the near infrared (958 -1085 nm), grown by seed-mediated chemical route. Cloroauric acid-1mM as precursor agent was used, obtained from a stock solution prepared by dissolving metallic gold (99,99%) i
Matéria (Rio J.). Publicado em: 16/09/2019
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7. Effect of Aerodynamic Configuration Parameters on Lateral-Directional Stability of Double-Swept Flying Wing Aircraft
ABSTRACT: Poor lateral-directional stability due to the absence of vertical stabilizer is a great risk to the aircraft with flying wing layout. In this paper, an unmanned aerial vehicle with this kind of configuration is chosen as the research object. A three-dimensional model of the unmanned aerial vehicle is established, and then the sensitivity analysis i
J. Aerosp. Technol. Manag.. Publicado em: 09/09/2019
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8. Morphological and physiological changes during maturation of okra seeds evaluated through image analysis
ABSTRACT: This study was performed to associate specific morphological parameters, defined by X-ray images, with seed performance of okra (Abelmoschus esculentus (L.) Moench) during maturation. Fruits of cultivar Santa Cruz 47 at different developmental stages were collected at five-day intervals (from 5 to 65 days after anthesis) and water content, dry matt
Sci. agric. (Piracicaba, Braz.). Publicado em: 05/09/2019
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9. MEISTER ECKHART LEITOR DO "LIBER DE CAUSIS"
RESUMO A tradução árabe de alguns trechos do tratado de metafísica "Elementatio Theologiae" de Proclo, conhecida com o nome de "Liber de Causis" e atribuída erroneamente a Aristóteles, influenciou três grandes pensadores dominicanos da Idade Média: Alberto Magno, Tomás de Aquino e Meister Eckhart. Composto de 31 proposições, defende a tese da exis
Kriterion. Publicado em: 29/08/2019
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10. System to measure torsion modulus of polymers using the deformation energy method
Abstract This paper presents an alternative method to measure the torsion modulus, G, for samples of polymers. We constructed a measurement system with a force sensor (FS) and a rotational movement sensor (RMS) to obtain a relationship between force (F) and torsion angle (θ). An expression that could return the value of G was deduced using the deformation e
Polímeros. Publicado em: 01/08/2019
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11. Phytophthora palmivora: agente causal da podridão da base do estipe da pupunheira no Brasil
RESUMO A área plantada com pupunheira (Bactris gasipaes) para a produção de palmito tem aumentado nos estados da Bahia, Espírito Santo, Rio de Janeiro, Tocantins, São Paulo, Paraná e Santa Catarina. Nestas regiões os plantios são atacados pela podridão da base do estipe (PBE), associada ao oomiceto Phytophthora palmivora. Há poucos trabalhos sobre
Summa phytopathol.. Publicado em: 10/07/2019
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12. Longitudinal Aerodynamic and Stability Characteristics of High-Aspect-Ratio Unmanned Aerial Vehicles in Gust Response
ABSTRACT The aim of this work is to propose an accurate and reliable numerical simulation method of gust response, so as to analyze longitudinal stability characteristics of high-aspect-ratio unmanned aerial vehicles (UAVs) under gust response. Based on the dual-time stepping method, the unsteady Navies-Stokes equation was solved. By introducing grid velocit
J. Aerosp. Technol. Manag.. Publicado em: 03/06/2019