Pressure Chamber
Mostrando 1-12 de 235 artigos, teses e dissertações.
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1. Respostas funcionais foliares de plantas jovens de Hevea brasiliensis submetidas à deficiência hídrica e à reidratação
Resumo A deficiência hídrica é considerada um fator que produz danos significativos durante o período de estabelecimento e de crescimento dos plantios. O objetivo deste estudo foi investigar características morfofisiológicas e bioquímicas de folhas de mudas de seringueira em resposta à deficiência hídrica e, posterior, reidratação. Plantas jovens
Ciênc. Florest.. Publicado em: 02/12/2019
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2. Glaucoma de ângulo fechado devido a síndrome de íris em platô
Resumo Objetivo: Descrever um caso de glaucoma de ângulo fechado devido a síndrome de íris em platô. Descrição do caso: Paciente do sexo feminino, de 50 anos de idade, que há 13 meses foi tratada de fechamento angular primário a esquerda com sucesso com iridotomia periféria com Nd:YAG laser, compareceu ao serviço com queixa de embaçamento visual
Rev. bras.oftalmol.. Publicado em: 04/11/2019
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3. Numerical Study on Response Characteristics of Solid Rocket Pintle Motor
ABSTRACT: Pintle technology is currently a versatile technology used in a solid rocket motor (SRM) to control the desired thrust by changing the nozzle throat area, while effectively controlling the chamber pressure at the same time. The sudden movement of the pintle can induce rapid changes in the flow field and the occurrence of pressure oscillations insid
J. Aerosp. Technol. Manag.. Publicado em: 26/08/2019
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4. Clinical profile and ophthalmologic manifestations of Herpes Zoster Ophthalmicus
RESUMO Objetivos: Herpes Zoster Oftálmico (HZO) é uma doença causada pelo vírus varicella-zoster que comumente afeta idosos ou doentes imunossuprimidos, com potencial para gerar graves comorbidades oculares, incluindo úlceras corneanas, uveíte, necrose retiniana e neuralgia pós-herpética. O objetivo deste estudo foi avaliar estes pacientes na forma
Rev. bras.oftalmol.. Publicado em: 01/07/2019
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5. Descolamento seroso de coroide como manifestação tardia da síndrome de Vogt-Koyanagi-Harada
Resumo Relatamos um caso atípico de uma paciente de 40 anos com apresentação completa da Síndrome de Vogt-Koyanagi-Harada (SVKH) que após 17 anos do diagnóstico inicial evoluiu com descolamento seroso de coroide. A paciente procurou atendimento com queixa de dor em olho esquerdo (OE). O exame oftalmológico revelou acuidade visual (AV) igual a de movim
Rev. bras.oftalmol.. Publicado em: 2019-02
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6. Ocular abnormalities in morbid obesity
RESUMO Objetivo: A obesidade está associada a doenças oulares, mas as mudanças estruturais subjacentes e os mecanismos patogênicos não foram examinados detalhadamente. Aqui avaliamos os efeitos da obesidade mórbida nos índices morfométricos da doença ocular. Métodos: Voluntários obesos mórbidos (n=101, índice de massa corporal ³40) e indivíd
Arq. Bras. Oftalmol.. Publicado em: 2019-02
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7. Experimental study of brass properties through perforation tests using a thermal chamber for elevated temperatures
Abstract Experimental analysis on standard brass alloy has been carried out using a high pressure gas gun. Perforation tests have been performed for a variety of impact velocities from 40 to 120 m/s in order to study the material behaviour and to define failure modes. The main aim of the study has been to provide results using an innovative thermal chamber t
Lat. Am. j. solids struct.. Publicado em: 22/10/2018
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8. Artificial neural networks modeling of kinetic curves of celeriac (Apium graveolens L.) in vacuum drying
Abstract The objective of this study was to predict celeriac drying curves using artificial neural networks (ANNs). The experimental data for vacuum drying kinetics of celeriac slices reported by other researcher in the previously published article was used. The air temperature, chamber pressure and time values were used as ANN inputs. To predict the moistu
Food Sci. Technol. Publicado em: 30/07/2018
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9. Determination of Inorganic Contaminants in Electrical and Electronic Equipment after Digestion Using Microwave-Assisted Single Reaction Chamber
A method for digestion of plastics from waste of electrical and electronic equipment (WEEE) was developed using the microwave-assisted wet digestion in single reaction chamber (MAWD-SRC). The determination of As, Cd, Co, Cr, Cu, Ni, Pb, Sb and Zn by inductively coupled plasma mass spectrometry (ICP-MS) and inductively coupled plasma optical emission spectrom
J. Braz. Chem. Soc.. Publicado em: 2017-09
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10. Assessment of differences between products obtained in conventional and vacuum spray dryer
Abstract In this work, an experimental unit of a vacuum spray dryer was built. This prototype attempted to combine the advantages of freeze-drying (drying at low temperatures due to vacuum) and spray drying (increase of surface area aiming the improvement of heat transfer efficiency). Maltodextrin solutions were dried in the vacuum operated equipment and in
Food Sci. Technol. Publicado em: 19/09/2016
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11. Experimentally Validated Combustion and Piston Fatigue Life Evaluation Procedures for the Bi-Fuel Engines, Using an Integral-Type Fatigue Criterion
Abstract A relatively complete procedure for high cycle fatigue life assessment of the engine components is outlined in the present paper. The piston is examined as a typical component of the engine. In this regard, combustion process and transient heat transfer simulations, determination of the instantaneous variations of the pressure and temperature in the
Lat. Am. j. solids struct.. Publicado em: 2016-06
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12. Inflammatory cytokines and plasma redox status responses in hypertensive subjects after heat exposure
Hypertension is characterized by a pro-inflammatory status, including redox imbalance and increased levels of pro-inflammatory cytokines, which may be exacerbated after heat exposure. However, the effects of heat exposure, specifically in individuals with inflammatory chronic diseases such as hypertension, are complex and not well understood. This study comp
Braz J Med Biol Res. Publicado em: 02/02/2016