Virgin
Mostrando 1-12 de 347 artigos, teses e dissertações.
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1. Evaluation of Brazilian Monovarietal Extra Virgin Olive Oils Using Digital Images and Independent Component Analysis
Digital images associated with chemometric tools, in a non-destructive approach, have been applied for the evaluation of the Brazilian monovarietal extra virgin olive oil. Independent component analysis (ICA) was employed in the image data evaluation of olive oils produced from distinctive olive varieties, and it was successful in highlighting the natural gr
J. Braz. Chem. Soc.. Publicado em: 2020-09
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2. DETERMINAÇÃO DA AUTENTICIDADE DE AMOSTRAS DE AZEITE COMERCIAIS APREENDIDAS NO ESTADO DO ESPÍRITO SANTO USANDO UM ESPECTROFOTÔMETRO PORTÁTIL NA REGIÃO DO NIR
Many instrumental techniques are used to monitor the quality of food products, highlighting near infrared spectroscopy (NIRS). In order to determine the authenticity of 60 commercial oil samples seized by the Espírito Santo state police, this work used a portable spectrometer in the NIR region associated with chemometric tools such as principal component an
Quím. Nova. Publicado em: 20/07/2020
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3. Avaliação dos impactos ambientais de um processo industrial utilizando como matéria-prima policarbonatos virgem e reciclado
RESUMO Os impactos ambientais gerados por processos produtivos é um assunto em crescente evidência no mundo organizacional, e a análise comparativa de processos vem sendo utilizada pelas empresas para verificar os impactos ambientais e suas principais fontes de emissões. A análise dos impactos de um processo produtivo, com dois contextos distintos para
Eng. Sanit. Ambient.. Publicado em: 20/12/2019
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4. María Josefa De La Encarnación. Posesa, Endemoniada y Loca Frente a los Inquisidores de Lima, 1714-1719
Abstract This article examines one of the trials of the Inquisition in Lima during the 18th century. In the trial, María Josefa De La Encarnación — a poor, mulata servant — claimed to have a special connection to God. Her case file, which is held in Madrid’s Archivo Histórico Nacional, relates a series of acts linked not only to the celestial and th
História. Publicado em: 02/12/2019
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5. Avaliação da energia incorporada e da emissão de CO2 em recipientes para refrigerantes: PET versus vidro
RESUMO Este artigo busca avaliar e comparar qual material (PET ou vidro) proporciona um ciclo de vida mais sustentável para os recipientes utilizados no envase de refrigerantes. Foram comparados quatro recipientes de vidro - três retornáveis e um descartável - com cinco recipientes em polietileno tereftalato (PET) - três descartáveis produzidos com mat
Eng. Sanit. Ambient.. Publicado em: 25/11/2019
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6. Efeito da adição de resíduo de vidro em massa de cerâmica de alvenaria
RESUMO Este trabalho investigou o efeito da adição de resíduo de vidro para fabricação de cerâmica de alvenaria. Foram conformados corpos-de-prova cilíndricos de 27 mm de diâmetro por 45 mm de altura, a partir da massa padrão de uma indústria de cerâmica vermelha e outras 3 formulações (5, 10 e 20%) com incorporação de vidro, baseado em estudo
Matéria (Rio J.). Publicado em: 25/11/2019
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7. Quality of olive oils from southeastern Brazil
ABSTRACT This study aimed to characterize the volatile composition and sensory characteristics of virgin olive oils (VOOs) from eight olive cultivars grown in the southeast region of Brazil. The volatiles were extracted by Solid Phase Micro Extraction (SPME) and analyzed by Gas Chromatography coupled to MassSpectrometry (GC-MS). The dominant sensory attribut
Bragantia. Publicado em: 04/11/2019
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8. Adding value to polystyrene waste by chemically transforming it into sulfonated polystyrene
ABSTRACT Polystyrene (PS), one of the most used polymers in everyday life, has a low recycling rate due to its inexpensive virgin resin. In order to make polystyrene waste (WPS) recycling advantageous, it is possible to change it chemically, introducing heteroatoms in the polymer chain thus transforming the waste into a material with more added value. In thi
Matéria (Rio J.). Publicado em: 16/09/2019
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9. Investigation of the Roof Presplitting and Rock Mass Filling Approach on Controlling Large Deformations and Coal Bumps in Deep High-Stress Roadways
Abstract Roadway deformation and coal bumps are major challenges for underground engineering. Taking the Lu'an mining district in Shanxi Province as an example, the failure mechanism of deep high-stress roadway was studied. Numerical simulations and the similar material test were performed to investigate the effect of the roof presplitting and rock mass fill
Lat. Am. j. solids struct.. Publicado em: 27/05/2019
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10. Unusual vaginal bleeding due to a leech bite in a girl from a tropical area: A case report
Abstract This study describes the isolation of a leech following the presentation of unusual vaginal bleeding. Vaginal bleeding in children due to a leech bite is very rare. This is the first report of severe bleeding in a virgin 14-year-old girl from Mashhad, Iran due to the presence of a leech in the vagina.
Rev. Soc. Bras. Med. Trop.. Publicado em: 11/04/2019
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11. Identification of Extra Virgin Olive Oils Modified by the Addition of Soybean Oil, Using Ion Chromatography
The modification of four extra virgin olive oils from different origins with refined soybean oil (SO), in the proportions of 0, 5, 10, 20 and 30% m/m, was studied using two approaches. First, the induction period (IP) was determined by Rancimat. In the second strategy, ion chromatography was used to quantify the formic and acetic acids, in their carboxylate
J. Braz. Chem. Soc.. Publicado em: 08/04/2019
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12. Surface modification of activated carbon by corona treatment
Surface modification may lead activated carbon (AC) to take on different properties. This study aimed to promote surface modification of activated carbons using corona treatment (electrical discharge). In this study, powdered commercial activated carbon was used. Activated carbons were subjected to corona treatment at different exposure times (2, 5, 8 and 10
An. Acad. Bras. Ciênc.. Publicado em: 21/03/2019