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Mostrando 1-12 de 4384 artigos, teses e dissertações.
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1. Identifying olive oil fraud and adulteration using machine learning algorithms
As olive oil (OO) is more expensive than other vegetable oils, it is usually adulterated by blending it with more economic edible oils such as cottonseed oil (CSO), canola oil (CO), and soybean oil (SO). This research aimed to determine the fatty acid compositions obtained as a result of blending different proportions of CSO, CO and SO with OO using a gas ch
Química Nova. Publicado em: 2022
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2. Finite element computational development for thermo-mechanical analysis of plane steel structures exposed to fire
Abstract This article presents a numerical formulation based on finite element procedures for application in nonlinear thermo-mechanical analyses of steel planar structures under fire condition. The mechanical properties of structural elements degrade when subjected to high temperatures, resulting in significant reductions in strength and stiffness. Under th
REM - International Engineering Journal. Publicado em: 2022
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3. COMPARAÇÃO ENTRE MÉTODOS PARA DETERMINAÇÃO DE CARGAS ATÔMICAS EM SISTEMAS MOLECULARES: A MOLÉCULA N-{N-(PTERINA-7-IL)CARBONILGLICIL}-L-TIROSINA (NNPT)
Selecting a method to compute partial atomic charges is not trivial because different methods usually provide different charge values and there is no consensus on the most useful approach. In this work, Mulliken, MBS, Chelp, Chelpg, MK, Hirshfeld, NPA, DMA and AIM methods were selected to compute atomic charges and electric dipole moment vector of N-{N-(Pter
Quím. Nova. Publicado em: 2021-02
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4. SOLUÇÕES A BASE DE ÁLCOOL PARA HIGIENIZAÇÃO DAS MÃOS E SUPERFÍCIES NA PREVENÇÃO DA COVID-19: COMPÊNDIO INFORMATIVO SOB O PONTO DE VISTA DA QUÍMICA ENVOLVIDA
The recent coronavirus pandemic has already victimized hundreds of thousands of people around the world, and until this moment does not exist any medicine for healing or vaccine to avoid the contamination. Therefore, the actions of social isolation associated with the use of masks and surface and hand sanitation are the most effective actions to avoid the vi
Quím. Nova. Publicado em: 2020-05
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5. Immunohistochemistry contribution in the diagnosis of splenic marginal zone lymphoma
The recent coronavirus pandemic has already victimized hundreds of thousands of people around the world, and until this moment does not exist any medicine for healing or vaccine to avoid the contamination. Therefore, the actions of social isolation associated with the use of masks and surface and hand sanitation are the most effective actions to avoid the vi
Rev. Assoc. Med. Bras.. Publicado em: 2020-05
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6. IDENTIFICAÇÃO DE ADULTERANTES DE BIODIESEL METÍLICO DE CRAMBE EM MISTURAS COM DIESEL, USANDO FT-MIR E CARTAS DE CONTROLE MULTIVARIADAS BASEADAS NO SINAL ANALÍTICO LÍQUIDO
Adulterants in biodiesel/diesel blends modifies its physical and chemical properties. In this work, Fourier Transform Mid-Infrared spectrometry (FT-MIR) and multivariate control charts based on Net Analyte Signal (NAS) were used to monitor the quality of Crambe methyl biodiesel in relation to the biodiesel content and the presence of adulterants. The calibra
Quím. Nova. Publicado em: 2020-01
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7. The austral-most record of the genus Haemagogus Williston (Diptera: Culicidae)
Abstract INTRODUCTION: The genus Haemagogus Williston is restricted to Central America and North and middle of South America and it includes numerous species of yellow fever virus vectors. METHODS: Adult female and larvae mosquitoes were collected using hand aspirators and dipper and pipette, respectively. RESULTS: The first record of a species of Haema
Rev. Soc. Bras. Med. Trop.. Publicado em: 20/12/2019
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8. Extracellular vesicles isolated from Trypanosoma cruzi affect early parasite migration in the gut of Rhodnius prolixus but not in Triatoma infestans
The protozoan Trypanosoma cruzi has the ability to spontaneously secrete extracellular vesicles (EVs). In this paper, T. cruzi EVs derived from epimastigote forms were evaluated during interaction with triatomine bugs Rhodnius prolixus and Triatoma infestans. T. cruzi EVs were purified and artificially offered to the insects prior to infection with epimastig
Mem. Inst. Oswaldo Cruz. Publicado em: 13/12/2019
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9. Eco-epidemiological study on sandflies and environmental aspects related to the transmission of leishmaniasis in a municipality of Minas Gerais, Brazil, 2015-2016
RESUMO Objetivou-se avaliar a fauna vetorial e os aspectos ambientais e climáticos relacionados à transmissão das leishmanioses. Foi realizado um estudo eco-epidemiológico prospectivo de coleta sistemática de flebotomíneos e inquérito censitário sorológico canino em áreas de um município do Brasil. Para determinar a taxa de prevalência de LVC, fo
Arq. Bras. Med. Vet. Zootec.. Publicado em: 13/12/2019
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10. “Transição política” e ditadura no Brasil: os anos 1970 e seus agendamentos políticos e intelectuais
RESUMO O artigo é prospectivo e encerra uma proposta de agenda de pesquisa. Apoia-se em recentes descobertas historiográficas e na pesquisa material dos autores e investiga o estabelecimento de uma tendência dos anos 1970: a da imaginação de projetos de prospecção da democracia, a partir da ditadura, por meio de agendas de “transição política”.
Rev. Bras. Hist.. Publicado em: 09/12/2019
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11. Advances in citrus propagation in Brazil
Resumo A citricultura é uma atividade agrícola de grande expressão mundial, ocupando posição de destaque no Brasil entre as frutíferas com elevado volume e valor de produção para o mercado interno de frutas frescas e para exportação de suco concentrado. Considerando as limitações de ordem técnica do agronegócio dos citros, principalmente as am
Rev. Bras. Frutic.. Publicado em: 05/12/2019
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12. Do climate changes alter the distribution and transmission of malaria? Evidence assessment and recommendations for future studies
Abstract Malaria, a mosquito-borne infectious disease, is considered a significant global health burden. Climate changes or different weather conditions may impact infectious diseases, specifically those transmitted by insect vectors and contaminated water. Based on the current predictions for climate change associated with the increase in carbon dioxide con
Rev. Soc. Bras. Med. Trop.. Publicado em: 02/12/2019