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Mostrando 1-12 de 7763 artigos, teses e dissertações.
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1. Efficient Encapsulation and Controlled Release of N,N-Diethyl-3-methylbenzamide (DEET) from Oil-in-Water Emulsions Stabilized by Cationic Nanocellulose and Silica Nanoparticles
Oil-in-water emulsions containing N,N-diethyl-3-methylbenzamide (DEET) were developed aiming to extend the sustained release of the active compound, by using two oppositely charged nanomaterials, namely silica nanoparticles (SiNP) and cationic cellulose nanofibrils (CCNF), as stabilizers, and a mixture of food-grade nonionic surfactants to avoid precipitatio
Journal of the Brazilian Chemical Society. Publicado em: 2023
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2. Quality changes of acerola fruit harvested at different maturity stages and exposed to external ethylene
ABSTRACT Although acerola (Malpighia emarginata D.C.) has been suggested to be a climacteric fruit, little is known about its sensitivity to exogenous ethylene. The objective of the study was to evaluate the quality changes of acerola fruit at two harvest maturity stages in response to external ethylene application. ‘Flor Branca’ and ‘Junko’ acerolas
Revista Ceres. Publicado em: 2022
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3. External Auditory Canal Cholesteatoma: Clinical and Radiological Features
Abstract Introduction External auditory canal cholesteatoma (EACC) is often misdiagnosed. Objectives To outline the clinical presentation of EACC, and to describe its radiological findings on high-resolution computed tomography (HRCT) of the temporal bone. Methods The clinical records of all patients diagnosed with EACC from April 2017 to March 2020 in a
International Archives of Otorhinolaryngology. Publicado em: 2022
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4. Equipment for Monitoring Synchronous Generators Condition through External Magnetic Field Waveforms
Abstract This paper presents an equipment for monitoring synchronous generators condition through characteristics of the time derivative of the external magnetic field. The developed monitoring methodology allows the identification of established or incipient faults, by detecting changes in the magnetic signature of the synchronous generator. In this methodo
Journal of Microwaves, Optoelectronics and Electromagnetic Applications. Publicado em: 2022
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5. Effect of air blast sprayer application speed on the dye retention of coffee leaves
ABSTRACT Improving the effectiveness of pesticide application for controlling insects, mites, and pathogens in coffee cultivation has been a major challenge for coffee farmers, researchers, and consultants. The present study aimed to assess the deposition and distribution of a brilliant blue tracer in the coffee canopy using Jacto’s Arbus 2000 Super Export
Revista Ceres. Publicado em: 2022
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6. Global shocks in emerging economies: An empirical investigation
Resumo Shocks in commodity prices are viewed as a major driver of emerging economies’ business cycle. We show this is not the case for Brazil, Chile, Colombia, and Peru when a structural vector autoregressive model accounts for macro-finance linkages at world and domestic levels. The presence of a global financial variable modifies established results as i
Revista Brasileira de Economia. Publicado em: 2022
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7. The Endoscopic Anatomy of the External Acoustic Meatus and of the Middle Ear in Dry Temporal Bones: A Study Conducted Using Digital and Mobile Device Technology
Abstract Introduction The endoscopic anatomy of the middle ear (ME) and of the external acoustic meatus (EAM) has been described in cadavers, in fresh temporal bones, or in vivo using conventional video recording, but not in dry bones or using an alternative inspection and recording technique. Objective To study the anatomy of the ME and of the EAM in dry
International Archives of Otorhinolaryngology. Publicado em: 2022
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8. Mortality in children under five years old in Brazil: evolution from 2017 to 2020 and the influence of COVID-19 in 2020
Abstract Objective: To analyse the mortality trends in children under five years old in Brazil from 2017 to 2020 and the influence of COVID-19 in 2020. Methods: A retrospective study employing secondary data from the Brazilian Mortality Information System. Deaths according to cause were extracted and disaggregated into early, late, post-neonatal, and 1 to
Jornal de Pediatria. Publicado em: 2022
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9. Patterns of external insertion in global value chains: a comparative analysis between Brazil and China
RESUMO A literatura do comércio internacional tem mostrado os benefícios da fragmentação internacional da produção aos países em desenvolvimento. No entanto, há ponderações advindas da hierarquização e comando nas cadeias globais de valor. Nessa perspectiva, esse trabalho objetiva avaliar a inserção internacional brasileira e chinesa propondo u
Brazilian Journal of Political Economy. Publicado em: 2022
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10. The dilemma of choosing obstetrics and anesthesia techniques in a patient with cerebral cavernomatosis: a case report
Abstract This report describes the case of a pregnant woman who arrived for preanesthetic assessment of External Cephalic Version (ECV) for fetus in breech presentation and cesarean section in case of ECV failure. Although the technique seems simple, attempts to rotate the fetus can result in elevated intracranial pressure, which might cause malformation ble
Brazilian Journal of Anesthesiology. Publicado em: 2022
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11. Some stylized facts on external shocks and inflation upsurge in Brazil, 1951-1985
Resumo O presente artigo estuda as causas do aumento da inflação no Brasil de 1951 a 1985, período em que as taxas de inflação brasileiras estiveram entre as mais altas do mundo. Para tanto, identifica os episódios de surto inflacionário no Brasil nesse período e observa se eles estiveram relacionados a fatores de pressão de custos, notadamente choq
Nova Economia. Publicado em: 2022
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12. An Eco-Friendly Proposal by Integrating Chromatographic Fingerprinting and Multivariate Control Chart in a Non-Target Analysis to Evaluate Grape Juices from Different Farming Practices
A potential eco-friendly method without organic solvents is presented by integrating a chromatographic fingerprint and multivariate control chart based on Q residuals to differentiate grape juices from different farming practices. The sample preparation was only water dilution, and the mobile phase was water acidified with sulfuric acid, which can be readily
Journal of the Brazilian Chemical Society. Publicado em: 2022