Hydrostatic Test
Mostrando 1-12 de 24 artigos, teses e dissertações.
-
1. Influences on the Functional Behavior of Great Arteries during Orthostasis
Resumo Fundamento: A redução da complacência arterial tem sido associada ao envelhecimento e à hipertensão na postura supina. Entretanto, os efeitos dinâmicos do ortostatismo na distensibilidade aórtica não foram definidos. Objetivo: Determinar a influência ortostática e a interferência da idade, pressão arterial (PA) e frequência cardíaca (F
Arq. Bras. Cardiol.. Publicado em: 09/09/2019
-
2. Superposition of Stress Fields in Diametrically Compressed Cylinders
Abstract The theoretical analysis for the Brazilian test is a classical plane stress problem of elasticity theory, where a vertical force is applied to a horizontal plane, the boundary of a semi-infinite medium. Hypothesizing a normal radial stress field, the results of that model are correct. Nevertheless, the superposition of three stress fields, with two
Lat. Am. j. solids struct.. Publicado em: 2016-10
-
3. Workability studies on Al+2.5%TiO2+Gr powder metallurgy composites during cold upsetting
Al+2.5%TiO2+Gr composites were synthesized through powder metallurgy technique and their workability behavior has been studied under tri-axial stress state condition. The powders were compacted using suitable punch and die in 400 kN hydraulic press and sintered at a temperature of about 590 ºC for a period of 3 hours in an electric muffle furnace. The sinte
Mat. Res.. Publicado em: 2014-12
-
4. Análise de criticidade de descontinuidade em um bocal de um vaso de pressão
Pressure vessels and pipes are essential equipment in the chemical, petrochemical, petroleum refining, among others. The safety operation of this equipment is an important aspect, since failures can vary from large financial losses to catastrophic consequences. Evaluation discontinuity found in inspections can be perfomed by fitness for service methodology w
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2011
-
5. Efeito da alta pressão hidrostática em Aeromonas hydrophila AH 191 crescida em leite e em meio de cultura / Effect of high hydrostatic pressure in Aeromonas hydrophila AH 191 grown in milk and culture medium
Exposure to high pressure is an efficient method for bacterial inactivation, which is important for the food sterilization. We examine the inactivation by high hydrostatic pressure in A. hydrophila AH 191, producer of aerolysin, which has cytotoxic, enterotoxic and hemolytic activities. A 30 min treatment at 250 MPa (25 °C in 0.1 M PBS, pH 7,4) resulted in
Publicado em: 2010
-
6. Análise de falha em vaso de pressão / Failure analysis of a pressure vessel
Vasos de pressão são equipamentos muito usados em todos os tipos de indústrias con-tendo fluídos pressurizados. Por serem equipamentos de alta responsabilidade, sua construção deve ser regida por normas internacionalmente reconhecidas. O rompimento de um vaso de pressão durante o teste hidrostático, em uma região onde a princípio não havia razões
Publicado em: 2010
-
7. EVALUATION OF SLEEVE TYPE REPAIR MODELS FOR PIPELINES WITH THICKNESS LOSS DEFECTS / AVALIAÇÃO DE MODELOS DO COMPORTAMENTO DE REPAROS DO TIPO LUVA EM DUTOS COM DEFEITOS DE PERDA DE ESPESSURA
Devido ao seu alto custo e à sua importância estratégica, a busca por soluções que estendam a vida útil das redes dutoviárias é plenamente justificável. Uma vez detectado um defeito, procura-se restabelecer sua capacidade operacional, reparando a seção danificada. A maioria dos estudos está orientada a determinar o comportamento de um duto repara
Publicado em: 2010
-
8. Processed Yellow Mombin (Spondias mombin L.) pulp using high hydrostatic pressure. / Polpa de Cajá (Spondias mombin L.) Processada por Alta Pressão Hidrostática.
High pressure processing (HPP) can generally inactivate microorganisms and enzymes responsible for food deterioration. The food material is submitted to elevated pressures (from 100 MPa up to 1000 MPa). One of the key advantages of this technology is that it enables food processing at ambient temperature, maintaining the quality of fresh foods, with minimal
Publicado em: 2009
-
9. REFOLDING IN HIGH HIDROSTATIC PRESSURE OF RECOMBINANT PROTEINS FROM INCLUSION BODIES IN ESCHERICHIA Coli / Renaturação em altas pressões hidrostáticas de proteínas recombinantes agregadas em corpos de inclusão produzidos em Escherichia coli
The expression of proteins as inclusion bodies in bacteria is a widely used alternative for production of recombinante protein. However, the aggregation is a problem often encountered during refolding of these proteins. High hydrostatic pressure are able to solubilize the inclusion bodies in the presence of low concentrations of denaturant reagents, encourag
Publicado em: 2009
-
10. Avaliação Físico-Química, Microbiológica e Sensorial do Presunto de Peru Submetido a Tecnologia de Alta Pressão Hidrostática. / Evaluation Physical Chemistry, Microbiological and the Sensory of ham turkey Submitted Technology of the High Hydrostatic Pressure.
The high hydrostatic pressure (HHP) is a technology that has advantages over conventional relationship the technologies that use heat and works with high pressure (100 MPa to 900MPa), maintains the sensory characteristics of food and close to the original, ensures a food safe from microbiological point of view and with increasing lifetime. In this study, wer
Publicado em: 2008
-
11. Experimentos com o modelo regional eta em diferentes configurações durante o período salljex e mecanismos de mesoescala associados ao desenvolvimento de scm / Experiments with the regional eta model in different settings during the salljex period and mesoescale mechanisms associated with MCS development
The rainfall regime over southern Brazil, Uruguay and northern Argentina is strongly influenced by Mesoscale Convective Complexes (MCCs) that develop during night time associated with the Low Level Jet (LLJ) to the east of Andes. As they are mesoscale systems, their predictability depends on the model resolution and ability in representing the main features
Publicado em: 2008
-
12. Optimization of Polyurethanes for Protection of Flexible Pipes Subject at Abrasion Wear / Otimização de poliuretanos para protetores de linhas flexíveis sujeitos ao desgaste abrasivo
n the last year the Petrobras Company gone self sufficiency of Brazil in the production of petroleum, Its take great effort to achieve technology in the exploration of deeper oil-well offshore. The extraction of petroleum deeper off-shore is make through flexible pipes that has multi layers of metal materials and polymeric materials, connected semi-submersib
Publicado em: 2007