Wet Process
Mostrando 1-12 de 179 artigos, teses e dissertações.
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1. Morphology Behavior of Copper Films Deposited after Wet Surface Treatment on Polished Alumina
In this paper, a pre-treatment process for electroless copper (Cu) deposition on the polished alumina (Al2O3) 99.9% and the behavior of Cu plating by electroless process after Al2O3 surface treatment were explored. Our work was carried out by changing the roughness of Al2O3 through micro-etching (coarsening), nucleation its surface by a two-step method (sens
Journal of the Brazilian Chemical Society. Publicado em: 2022
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2. Cadaveric study of anatomical measurement of isthmus parameters of lumbar spine to guide cortical bone screw placement
SUMMARY OBJECTIVE: To reduce surgical exposure and improve accuracy, this study evaluated the anatomical distance parameter D (including D1, D2, and D3) of the lumbar isthmus for cortical bone screw insertion. METHODS: A total of 25 structurally complete lumbar dry specimens were used for lumbar anatomy measurements. The six cadaver specimens were divided
Revista da Associação Médica Brasileira. Publicado em: 2022
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3. Performance analysis of the beneficiation process of bauxite from the Juruti Mine. Industrial sampling and performance evaluation
Abstract Sampling campaigns were conducted at the industrial bauxite wash circuit of the Juruti Bauxite Mine in Pará, Brazil. The beneficiation circuit consisted of crushing, scrubber washing, wet screening, hydrocyclone classification, and fltration. Considering laboratory processing of samples and statistical analyses of historical operation databases, ma
REM - International Engineering Journal. Publicado em: 2022
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4. Effect of pH level and calcination on the production of calcium phosphates by acidic route of wet precipitation
Abstract Multiphasic calcium phosphate powders were synthesized by the acidic route, using lactic acid as a chelating agent that allows the production of a stable and rich solution of calcium and phosphate ions at room temperature. After pH adjusting, without varying the concentrations of precursor solution, XRD and FTIR analyses showed different CaP phases
Cerâmica. Publicado em: 2021-06
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5. EFFECT OF THE POSTHARVEST PROCESSING METHOD ON THE BIOCHEMICAL COMPOSITION AND SENSORY ANALYSIS OF ARABICA COFFEE
ABSTRACT The objective of this work was to study the influence of two postharvest processing methods on the biochemical composition and sensory analysis of a Colombian specialty coffee. For this purpose, coffee beans (Coffea arabica) of the Castillo variety were collected and processed using the wet and semi-dry methods, and the drying process was conducted
Eng. Agríc.. Publicado em: 2020-04
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6. Climatic signal in a radial growth of Canadian and Maximovich poplars in south-western Poland
ABSTRACT: The main goal set by researchers in this article was to gather knowledge on the structure of the basic biometric features of tree-rings of two species of poplars, belonging to different sections of Aegeiros – Populus xcanadensis and Tacamahaca – Populus maximowiczii, and to define and understand the correlation between weather and annual increm
Sci. agric. (Piracicaba, Braz.). Publicado em: 20/12/2019
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7. Imidazolium-based Ionic Liquids Impregnated in Silica and Alumina Supports for CO2 Capture
Ionic liquids (ILs) physical immobilization in solid materials is a key strategy for developing efficient and low cost CO2 capture processes. In this work, two porous commercial substrates with different characteristics (silica and alumina) were impregnated with ILs by physical wet method. Imidazolium based IL combined with [Br]- and [Tf2N]- anions were used
Mat. Res.. Publicado em: 11/11/2019
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8. Injection Shrinkage аnd Water Sorption of Some Thermoplastic Dental Materials
Abstract Objective: To evaluate the change of diameter of different injection-molded thermoplastic materials. Material and Methods: Four thermoplastic injection-molded materials were analyzed (Bre.flex 2nd edition, Vertex ThermoSens, Perflex Biosens and Polyan IC). A total of 432 test samples were made in the form of an "hourglass". All samples were divide
Pesqui. Bras. Odontopediatria Clín. Integr.. Publicado em: 31/10/2019
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9. Development of Silica-Based Monoliths for the Capture of CO2
The synthesis of mesoporous materials in macroscopic scale, as for example, the monoliths, has been of great interest in view of the wide range of applications that this material holds. Thus, this work consists of the production of silica monoliths for the purpose of they being used in the carbon dioxide (CO2) adsorption process. The adsorbents were prepared
Mat. Res.. Publicado em: 30/09/2019
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10. Efeito da estratificação em substrato esterilizado na qualidade sanitária de sementes de Ilex paraguariensis
Resumo A estratificação das sementes de Ilex paraguariensis A. St.-Hill. (erva-mate) em areia úmida por períodos de quatro a seis meses é uma prática comum em viveiros, utilizada para a superação de dormência das mesmas. Entretanto, este processo pode apresentar difícil controle fitossanitário, devido ao elevado grau de umidade e a grande concentr
Ciênc. Florest.. Publicado em: 30/09/2019
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11. Obtenção e caracterização de copolímeros de Poliacrilonitrila (PAN) para uso em processos de fiação em extrusora
RESUMO A disponibilidade de novos materiais, processos e equipamentos sempre traz perspectivas favoráveis ao mercado. A busca por processos alternativos e pela redução do custo da obtenção de precursores de materiais de alto desempenho tem se tornado primordial para o desenvolvimento do setor industrial de produtos com valores mais acessíveis, visando
Matéria (Rio J.). Publicado em: 16/09/2019
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12. PRODUCTION AND CHARACTERIZATION OF PRECIPITATED SILICA FROM PALM OIL MILL FLY ASH USING CO2 IMPREGNATION AND MECHANICAL FRAGMENTATION
ABSTRACT In this research, sol-gel precipitation using CO2 impregnation and mechanical fragmentation method was applied to produce precipitated silica from Palm Oil Mill Fly Ash (POMFA). Carbon dioxide (CO2) was used in order to reduce the cost of the process and to enable sodium hydroxide recovery. The precipitation process was done in a stirred temperature
Braz. J. Chem. Eng.. Publicado em: 15/07/2019