Exposed Surface
Mostrando 1-12 de 1875 artigos, teses e dissertações.
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1. Analysis of Al2O3-ZrO2 ceramic insert in turning process of Ti-6Al-4V alloy using grey Taguchi-based response surface methodology (GT-RSM)
Abstract The present investigation aimed at a sustainable green turning operation of Ti-6Al-4V alloy using multi-objective optimization of surface roughness, tool flank wear, material removal rate, and tool wear loss with cutting speed, feed rate, and depth of cut as input parameters. The experiments were performed on a CNC lathe machine using an alumina-zir
Cerâmica. Publicado em: 2022
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2. Synthesis, Characterization, and Application of Europium(III) Complexes as Luminescent Markers of Banknotes
In this work, three complexes were synthesized from the trivalent europium ion (EuIII), using the picrate anion (pic), and delta-valerolactam (DVL), epsilon-caprolactam (EPK), and oenantholactam (OEN). The synthesized complexes [Eu(pic)3·(DVL)3], [Eu(pic)3·(EPK)3], and [Eu(pic)3·(OEN)3] were studied as luminescent markers for application as security eleme
J. Braz. Chem. Soc.. Publicado em: 2021-05
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3. Heat treatment analysis of ASTM A106 steel spheroidization and erosive wear at high temperatures
Abstract The microstructures of steels are altered when exposed to high working temperatures for long periods, which results in varied physical and chemical proprieties. This study evaluates the erosive wear behavior of ASTM A106 steel after it is exposed to high temperatures for long durations. Samples of normalized ASTM A106GrB steel were placed in a muffl
REM, Int. Eng. J.. Publicado em: 2020-12
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4. Effect of Scanning Speed on the Surface Roughness of Laser Metal Deposited Copper on Titanium Alloy
This paper reports on the effect of scanning speed on the laser deposited Cu on titanium alloy substrate. The experiments were conducted by varying the scanning speed from 0.3 m/min to 1.2 m/min while the laser power, the powder feed rate and the gas flow rate were kept constant. The laser deposited Cu were characterized through the evolving microstructure a
Mat. Res.. Publicado em: 20/12/2019
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5. Efeito de dois sistemas de resfriamento sobre os hormônios tireoidianos e as variáveis termofisiológicas de matrizes suínas em lactação
RESUMO Avaliaram-se os efeitos do sistema de resfriamento evaporativo com pressão negativa (SRE) e aspersão de água sobre o telhado (AAT), as variáveis termofisiológicas, os hormônios tireoidianos e a relação neutrófilo:linfócito (N:L) em porcas. Utilizaram-se 61 fêmeas em lactação, que foram divididas nos dois ambientes térmicos, sendo 30 em S
Arq. Bras. Med. Vet. Zootec.. Publicado em: 13/12/2019
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6. Characteristics of adhesive bonding with enamel deproteinization
RESUMO Objetivo: avaliar os efeitos do uso de hipoclorito de sódio (NaOCl) sobre as características de colagem de braquetes ortodônticos metálicos na superfície do esmalte, utilizando três sistemas adesivos. Métodos: cento e vinte pré-molares foram selecionados e divididos aleatoriamente em dois grupos iguais, cada um com 60 dentes (Grupos I e II).
Dental Press J. Orthod.. Publicado em: 11/11/2019
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7. Scanning Electrochemical Microscopy (SECM) Study of the Electrochemical Behavior of Anodized AZ31B Magnesium Alloy in Simulated Body Fluid
In this work, scanning electrochemical microscopy (SECM) was employed to study the corrosion behavior of anodized AZ31B magnesium alloy exposed to simulated body fluid. SECM measurements were carried out in surface generation/tip collection mode. The hydrogen evolution flux caused during corrosion of the magnesium alloy was oxidized at the ultra-microelectro
Mat. Res.. Publicado em: 28/10/2019
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8. Identification of Lead Exposure Through Saliva and the Occurrence of Gingival Pigmentation at Fuel Station Indonesian Officers
Abstract Objective: To identify the exposure of lead through saliva and the presence of gingival pigmentation in the risk group. Material and Methods: The type of this research is analytic observational with cross-sectional study design. The sample consisted of 40 subjects, who were divided into two groups of 20 each: G1: Gasoline Fuel Station and G2: Offi
Pesqui. Bras. Odontopediatria Clín. Integr.. Publicado em: 10/10/2019
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9. Land use and water quality in watersheds in the State of São Paulo, based on GIS and SWAT data
Resumo O uso e ocupação do solo influenciam a qualidade e a disponibilidade de água, devendo ser considerados numa gestão integrada dos recursos hídricos e no planejamento das bacias hidrográficas. Ferramentas de geoprocessamento têm sido utilizadas para classificação do uso do solo e combinadas com modelos hidrológicos para avaliação do impacto
Rev. Ambient. Água. Publicado em: 03/10/2019
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10. A prospective case series on surgical treatment of circumferential and semi-circumferential defects due to peri-implantitis
Abstract Different surgical treatment strategies for peri-implantitis with the use of graft material and membranes have been suggested without any longitudinal remarkable success rate. The present preliminary study was aimed to analyze a new clinical approach based on the disinfection of the implant connection, the disinfection of the implant surface and GBR
Braz. oral res.. Publicado em: 30/09/2019
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11. Aço carbono 1040 como indicador de agressividade do solo e da pasta de cimento em sistemas de ancoragem de linhas de transmissão
RESUMO O encapsulamento de hastes de âncora em pasta de cimento reduz o contato dos materiais metálicos com os ambientes agressivos, em torres estaiadas de linhas de transmissão de energia elétrica. Contudo, ainda são reportados casos de falha prematura devido à corrosão do sistema de ancoragem. O íon cloreto é considerado um dos principais respons�
Matéria (Rio J.). Publicado em: 16/09/2019
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12. SENSITIVITY OF EVAPOTRANSPIRATION ESTIMATED BY ORBITAL IMAGES UNDER INFLUENCE OF SURFACE TEMPERATURE
ABSTRACT Surface temperature (Ts) is a determining factor to obtain energy balance parameters, being relevant to understand the influence of this variable on the estimation of evapotranspiration. Thus, the objective of this study was to simulate errors in Ts estimation to verify the consequences of actual evapotranspiration (ETa) estimated by the SAFER (Simp
Eng. Agríc.. Publicado em: 09/09/2019