Transient Processes
Mostrando 1-12 de 360 artigos, teses e dissertações.
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1. Temporal Evolution of Roughness Development on Polymer Surfaces Exposed to Non-Thermal Plasma
Processes such as ablation, erosion and corrosion generally create roughness patterns on solid surfaces. Despite the randomness of this phenomenon, some patterns can be described mathematically by studying statistically the mechanisms behind them. This paper reports an experimental study on the temporal evolution of the roughness development of polymer surfa
J. Braz. Chem. Soc.. Publicado em: 2020-10
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2. COVID-19, Sistema Renina-Angiotensina, Enzima Conversora da Angiotensina 2 e Nicotina: Qual a Inter-Relação?
Processes such as ablation, erosion and corrosion generally create roughness patterns on solid surfaces. Despite the randomness of this phenomenon, some patterns can be described mathematically by studying statistically the mechanisms behind them. This paper reports an experimental study on the temporal evolution of the roughness development of polymer surfa
Arq. Bras. Cardiol.. Publicado em: 2020-10
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3. Medicinal Electrochemistry of Halogenated and Nitrated Pterocarpanquinones
Electrochemical methods are considered useful tools for simulations of biological redox reactions. The activities of quinones depend on their bioreduction. Biologically active pterocarpanquinones LQB-149 (nitroderivative), 150 and 151 (bromo and chloroderivatives, respectively) were electrochemically investigated by cyclic voltammetry, differential pulse vol
J. Braz. Chem. Soc.. Publicado em: 24/10/2019
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4. [PROVISIONAL] Overexpression of rice F-box protein OsFBX322 confers increased sensitivity to gamma irradiation in Arabidopsis
Abstract Ionizing radiation has a substantial effect on physiological and biochemical processes in plants via induction of transcriptional changes and diverse genetic alterations. Previous microarray analysis showed that rice OsFBX322, which encoded a rice F-box protein, was downregulated in response to three types of ionizing radiation: gamma irradiation, i
Genet. Mol. Biol.. Publicado em: 02/09/2019
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5. Hydrostatic Equilibrium between Soil Samples and Pressure Plates Used in Soil Water Retention Determination: Consequences of a Questionable Assumption
ABSTRACT Soil water retention is among the soil hydraulic properties most routinely measured in studies of soil physics and related areas. This property is used in dynamic simulations of vadose zone processes such as soil water availability, surface boundary processes of evaporation and infiltration, and the fate of soil pollutants. The most common measureme
Rev. Bras. Ciênc. Solo. Publicado em: 29/07/2019
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6. Políticas de Educação Especial no Chile (2005 - 2015): Continuidades e Mudanças
RESUMO: Nosso objetivo, neste artigo, é apresentar a política de Educação Especial no Chile, discutir as mudanças conceituais a partir da perspectiva da educação inclusiva, demonstrar a organização escolar por meio do Programa de Integração Escolar (PIE). Para o desenvolvimento da presente discussão, trabalhamos com análise documental que se bas
Rev. bras. educ. espec.. Publicado em: 2019-03
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7. Thermal analysis of steel-concrete composite cross sections via CS-ASA/FA
Abstract When exposed to high temperatures, such as in a fire situation, the physical and resistance characteristics of the materials employed in the structure deteriorate as the temperature increases. This fact promotes a considerable loss in the bearing capacity and stiffness of the structural system. The verification of a structure exposed to fire depends
REM, Int. Eng. J.. Publicado em: 2018-04
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8. Numerical analysis of the liquid ejection due to the gaseous jet impact through computational fluid dynamics
Abstract Metal droplets generated by an impinging jet, play an important role in metal refining processes, mainly in oxygen steelmaking, where the droplets are ejected into the slag phase. Since the available interfacial area of droplets is very high in this process, the generated droplets enhance the rates of heat transfer and chemical reactions. Therefore,
REM, Int. Eng. J.. Publicado em: 2018-03
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9. CONSIDERAÇÕES TÉCNICAS QUANTO AO USO DA VOLTAMETRIA DE VARREDURA ESCALONADA EM PROCESSOS ADSORTIVOS
Cyclic voltammetry has become one of the most useful tools in modern electrochemistry, but the use of digital potentiostats should be treated with caution by users. Staircase Voltammetry utilizes some parameters to build up the potential ramp. However, for some electrochemical processes, the signal response can be different compared with that acquired using
Quím. Nova. Publicado em: 2015-03
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10. The chlorophyll a fluorescence as an indicator of the temperature stress in the leaves of Prunus persica
Plants growing in temperate regions are often exposed to stress conditions caused by high temperatures. Photosynthesis is one of the metabolic processes most sensitive to high temperature stress, and it is often inhibited before other cellular functions. Using peach leaf disks, we studied the transient chlorophyll a fluorescence along with the gas exchanges
Braz. J. Plant Physiol.. Publicado em: 25/02/2013
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11. Kinetical study about the cobalt electrodeposition onto polycrystalline platinum
An electrochemical study of Co electrodeposition onto polycrystalline Pt from an aqueous solution containing 10-2 M CoCl2 + 1 M NH4CI (pH = 9.3) was conducted at overpotential conditions. The current density transients showed two maxima that corresponded to two nucleation and growth processes. The entire transient behavior was adequately predicted considerin
Quím. Nova. Publicado em: 2013
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12. Arthropod responses to the experimental isolation of Amazonian forest fragments
Arthropods are the most diverse and abundant group of animals found in tropical lowland forests, and in light of ongoing global change phenomena, it is essential to better understand their responses to anthropogenic disturbances. Here we present a review of arthropod responses to forest deforestation and fragmentation based on studies conducted at the Biolog
Zoologia (Curitiba). Publicado em: 2012-12