Mechanism Design
Mostrando 13-24 de 446 artigos, teses e dissertações.
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13. Impact responses of slender composite plates for bird-strike testing of fan blades
Abstract Bird-strike failure of fan blades is one of the basic challenges for the safety of aircraft engines. Simplified slender blade-like plates are always used to evaluate the impact-induced damage mechanism at design stage. One undesirable issue is the failure at the root of clamped slender plates, which cannot recover the real case of twisted blades. Fo
Lat. Am. j. solids struct.. Publicado em: 04/11/2019
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14. Evaluation of the Acid Baking Technique to Decrease the Phosphorus Content of the Iron Ore
Unlike the available mineral resources, the steelmaking processes have demanded raw material with lower phosphorus content to decrease the costs, energy use, and the residue generated within the steel plant. One alternative is to develop pretreatment of the iron ore concentrates producing raw materials with lower phosphorus. Depending on the mineral structur
Mat. Res.. Publicado em: 23/09/2019
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15. META-ANALYSIS AS A RESEARCH TOOL: A SYSTEMATIC REVIEW OF BIBLIOMETRIC STUDIES IN ADMINISTRATION
RESUMO Objetivo: Apresentar a técnica de metanálise como uma estratégia aplicada à pesquisa bibliométrica para desvelar o estado da arte da produção científica internacional, suas interações com as áreas de conhecimento, a colaboração entre autores e instituições, na área da Administração, com base no período entre 1998 e 2017. Originali
RAM, Rev. Adm. Mackenzie. Publicado em: 23/09/2019
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16. 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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17. RELIABILITY-BASED MULTI-OBJECTIVE OPTIMIZATION APPLIED TO CHEMICAL ENGINEERING DESIGN
ABSTRACT Chemical engineering optimization represents a significant challenge due to the complexity of the mathematical models that are frequently required in this area. These models are normally associated with nonlinear equations that represent mass, energy, and momentum balances, which are submitted to physical, constitutive, environmental, and design lim
Braz. J. Chem. Eng.. Publicado em: 15/07/2019
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18. Juvenile Sentencing: A Mixed-Methods Approach
How do socially relevant attributes influence juvenile criminal sentencing? While judicial decisions should, in principle, be fully based on legally relevant factors such as the seriousness of the offense and the defendant’s criminal record, I ask whether and how extralegal characteristics related to the adolescent’s position in structural relations affe
Bras. Political Sci. Rev.. Publicado em: 03/06/2019
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19. Políticas públicas, interpretação judicial e as intenções do legislador: o ProUni e o “cripto-ativismo” do Supremo Tribunal Federal
Resumo Este texto identifica e discute um caso de “cripto-ativismo” - um tipo de intervenção judicial forte na produção legislativa que, por outro lado, fica oculta sob sinais exteriores de deferência, como a declaração de constitucionalidade de uma norma questionada. Exemplos claros de cripto-ativismo aparecem com frequência em decisões de “i
Rev. Investig. Const.. Publicado em: 15/04/2019
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20. Relationship between Electrochemical Parameters, Cytotoxicity Data against Cancer Cells of 3-Thio-Substituted Nor-Beta-Lapachone Derivatives. Implications for Cancer Therapy
Electrochemical methods are powerful in the characterization and design of redox-modulating agents. We, herein, report the electrochemical investigation, in aprotic medium, of eleven synthetic 3-thio-substituted-nor-beta-lapachones, along with the determination of cytotoxic activity and correspondent selectivity index, against several cancer cell lines and o
J. Braz. Chem. Soc.. Publicado em: 2019-03
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21. Precipitación de uranio a partir de licores alcalinos
ABSTRACT In Argentina there is uranium with abundant organic matter and variety in quantity of sulfides and carbonates which act as cement or sealing joints. The latter minerals modify directly the choice of metal leaching process for the concentration of uranium. The most beneficial selected process turns out to be the alkaline leaching. Once this process h
Matéria (Rio J.). Publicado em: 19/07/2018
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22. Design and analysis of different models of microfluidic devices evaluated in Enhanced Oil Recovery (EOR) assays
ABSTRACT Microfluidic devices are a new platform for Enhanced Oil Recovery (EOR) assays. The application of Colloidad Dispersion Gels (CDG) injection method has been proposed in recent years. However, the mechanism of oil recovery enhancement has not been completely elucidated. Its purpose is to mobilize oil by decreasing the permeability of channeled zones.
Matéria (Rio J.). Publicado em: 19/07/2018
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23. Synthesis and molecular modelling studies of pyrimidinones and pyrrolo[3,4-d]-pyrimidinodiones as new antiplasmodial compounds
BACKGROUND Malaria is responsible for 429,000 deaths per year worldwide, and more than 200 million cases were reported in 2015. Increasing parasite resistance has imposed restrictions to the currently available antimalarial drugs. Thus, the search for new, effective and safe antimalarial drugs is crucial. Heterocyclic compounds, such as dihydropyrimidinone
Mem. Inst. Oswaldo Cruz. Publicado em: 18/06/2018
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24. Optimization for extraction of an oil recipe consisting of white pepper, long pepper, cinnamon, saffron, and myrrh by supercritical carbon dioxide and the protective effects against oxygen–glucose deprivation in PC12 cells
ABSTRACT This study is to investigate the most efficient extractives of extracting oil recipe for stroke treatment and the protective effects on an oxygen and glucose deprivation model in PC12 cells. An orthogonal experimental design L9 (34) was carried out for oil recipe's optimization with supercritical CO2 fluid extraction. 2-(4,5-Dimethylthiazol-2-yl)-2,
Rev. bras. farmacogn.. Publicado em: 2018-06