Manufacturing
Mostrando 1-12 de 1476 artigos, teses e dissertações.
-
1. Quando devemos investigar gravidez antes da reaplicação de medroxiprogesterona trimestral injetável?
Embora os fabricantes da medroxiprogesterona trimestral injetável recomendem como prazo máximo para reaplicação o intervalo de três meses (13 semanas), as evidências disponíveis apontam para segurança anticoncepcional com uso em intervalos de até três meses e 14 dias (15 semanas) sem a necessidade de investigar gravidez.
Se o intervalo de
Núcleo de Telessaúde Rio Grande do Sul. Publicado em: 12/06/2023
-
2. The influence of compositional variability of dimension stone residues on the properties of rustic porous ceramic tiles
Abstract This study analyzed how the compositional variability of dimension stone residues influences the characteristics of rustic porous ceramic tiles. The specimens were prepared by adding 20 wt% of dimension stone residue to the clay and sintered at 1000 °C for 1 h. The testing assays performed were physical properties and structural analysis through sc
Cerâmica. Publicado em: 2023
-
3. Additive Manufacturing towards the Fabrication of Greener Electrochemical Sensors for Antioxidants
Additive manufacturing is an emerging tool that has contributed to the sustainable fabrication of devices in several areas based on the concept of “zero waste”. Considering extrusion-based manufacturing (or 3D printing), polylactic acid (PLA) has been highlighted due to its biodegradability, obtention from renewable sources, and compatibility for 3D prin
Journal of the Brazilian Chemical Society. Publicado em: 2022
-
4. A review on the ceramic additive manufacturing technologies and availability of equipment and materials
Abstract Ceramic additive manufacturing allows the fabrication of small series of complex parts without the high costs of molds usually associated with traditional ceramic processing. Although research into ceramic 3D printing by all technologies started back in the 90s, its industrial application is still quite restricted when compared to polymers and metal
Cerâmica. Publicado em: 2022
-
5. Optimum design of steel columns filled with concrete via genetic algorithm: environmental impact and cost analysis
Abstract The use of concrete-filled tubular columns as part of structural systems has steadily increased throughout the years. The growing demand for structural elements of this nature is a direct result of the possibility to use various cross-section shapes that have increased strength, along with resistance to fire and other corrosive agents. The main obje
REM - International Engineering Journal. Publicado em: 2022
-
6. ARTEMISININA E DERIVADOS: DESCOBERTA, ESTRATÉGIAS SINTÉTICAS E OBTENÇÃO INDUSTRIAL
Artemisinin, a natural sesquiterpene isolated from the Artemisia annua L. plant, represents a remarkable achievement in the treatment against malaria. Since its discovery in the 1970’s, researchers readily started synthesizing this complex natural product containing an unusual endoperoxide fragment. Despite various total syntheses reported, only in the las
Química Nova. Publicado em: 2022
-
7. Influence of the addition of niobium oxide on the properties of fused aluminum oxide used in abrasive tools
Abstract Fused alumina is a material used in the manufacturing of abrasive tools, due to its high fusion point, great hardness, and mechanical toughness. In this context, this study addressed the influence of niobium addition on the properties of fused alumina for abrasive applications. A comparison was also made between this oxide and the brown fused alumin
Cerâmica. Publicado em: 2022
-
8. Current account and real exchange rate equilibrium: the case of manufacturing in Mexico, 2001-2019
RESUMO Neste artigo, seguimos Bresser-Pereira et al. (2021) e estimar para o México uma série da taxa de câmbio real (RER) que equilibra a conta-corrente do México para o período 2001q1-2019q4. Neste processo, levamos em consideração vários determinantes, incluindo variáveis de política e indicadores financeiros, a evolução dos termos de troca, b
Brazilian Journal of Political Economy. Publicado em: 2022
-
9. The impact of exchange rate misalignments on manufacturing investment in Brazil
RESUMO Analisamos a hipótese de que as variações do investimento manufatureiro são influenciadas pela diferença entre as taxas de câmbio reais efetivas e de equilíbrio industrial e pela diferença entre as taxas de câmbio em conta-corrente e de equilíbrio industrial (uma proxy para a doença holandesa). A taxa de câmbio de equilíbrio em conta-corr
Brazilian Journal of Political Economy. Publicado em: 2022
-
10. Obtainment of a new metal matrix composite from the recycling of UNS S31803 duplex stainless steel by powder metallurgy
Abstract The purpose of circular economy is to maximize resources efficiency. With the increase in consumption of raw materials, energy and waste generation, recycling is necessary for environmental and industrial reasons. Thus, the powder metallurgy, together with mechanical milling, stands as a new method for scraps recycling. This study aimed to produce U
REM - International Engineering Journal. Publicado em: 2022
-
11. Manufacturing and characterization of sustainable macroporous glass foams
Abstract This work produced glass foams from soda-lime glass bottles, bentonite, and alumina by the replica method. Compositions with different contents of bentonite (5, 10, 15, and 20 wt%) were prepared and heat-treated at 800 °C. In the alumina-added compositions, 50 wt% of the bentonite was replaced by the alumina. The influences of the content of benton
Cerâmica. Publicado em: 2022
-
12. Morphoagronomic characterization of a germplasm collection of Furcraea spp. and Agave spp.
ABSTRACT This work was carried out in Antioquia, Colombia, in a collection of the Furcraea and Agave genera, important in the country for manufacturing strings, sacks, geotextiles, and handicrafts Currently, to enhance its use, applications have been developed in textiles, biodegradable materials and thermo-acoustic insulation, among others. The aim of this
Revista Ceres. Publicado em: 2022