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	Provedor de dados BJMBR (4) CIGR Journal (2) ArchiMer (1) REA (1) Autor Araujo,Victor A. De (1) Bamgboye, Isaac (1) Belletati,J.F. (1) Bessa,K.L. (1) Braghirolli,D.I. (1) Brun Cottan, J (1) Cardozo,N.S.M. (1) Christoforo,André L. (1) Deloffre, J (1) Dos Santos,L. (1) Fernandes,I.A. (1) Krieger,J.E. (1) Lafite, R (1) Lahr,Francisco A. R. (1) Laurindo,F.R.M. (1) Lima,R.M. (1) Miyakawa,A.A. (1) Nogueira,Marta C. De J. A. (1) Nóbrega,A.C. (1) Ortiz,J.P. (1) Mais... Palavra-chave Shear stress (8) Agricultural & Environmental Engineering (1) Angiotensin-I converting enzyme (1) Blood flow restriction (1) Cell adhesion (1) Cracking (1) Crop production engineering Bulk density (1) Deformation (1) Density (1) Drag reduction (1) Electrospun scaffolds (1) Endothelial cells (1) Endothelium (1) Farm power & machinery (1) Flexural rigidity (1) Flow-mediated dilation (1) Flow-pressure response (1) Hardness (1) Hypertension (1) Intertidal mudflat (1) Mais... Tipo do documento Info:eu-repo/semantics/article (6) Info:eu-repo/semantics/other (1) Text (1) Ano 2019 (1) 2018 (1) 2017 (1) 2016 (1) 2014 (1) 2011 (1) 2006 (1) 2003 (1) Mais... País Brazil (5) China (2) France (1) Idioma Inglês (8)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 8 Primeira ... 1 ... Última PHYSICAL-MECHANICAL CHARACTERIZATION OF Eucalyptus urophylla WOOD REA Lahr,Francisco A. R.; Nogueira,Marta C. De J. A.; Araujo,Victor A. De; Vasconcelos,Juliano S.; Christoforo,André L.. ABSTRACT: Eucalyptus urophylla consists in a wood-producing species, which offers a natural multiple raw material of good quality for applications in rural and civil constructions. However, Eucalyptus urophylla still has a small utilization as building parts and elements, resulting from the possible ignorance and low diffusion of its structural possibilities. Thereby, the present research aims to measure the main thirteen mechanical properties of Eucalyptus urophylla wood for two different moisture contents, 12% and 30% (green wood). Furthermore, in these two conditions of moisture content evaluation, volumetric mass densities were also evaluated. At the end of this evaluation, which included 2688 determinations, all the obtained results were statistically... Tipo: Info:eu-repo/semantics/article Palavras-chave: Timor White Gum; Strength modulus; Cracking; Shear stress; Hardness; Density. Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000500900 Tidally-induced shear stress variability above intertidal mudflats in the macrotidal Seine estuary ArchiMer Verney, Romaric; Brun Cottan, J; Lafite, R; Deloffre, J; Taylor, J. Tidal currents and the spatial variability of tidally-induced shear stress were studied during a tidal cycle on four intertidal mudflats from the fluvial to the marine part of the Seine estuary. Measurements were carried out during low water discharge (< 400 m(3) s(-1)) in neap and spring tide conditions. Turbulent kinetic energy, covariance, and logarithmic profile methods were used and compared for the determination of shear stress. The c(TKE) coefficient value of 0.19 cited in the literature was confirmed. Shear stress values were shown to decrease above mudflats from the mouth to the fluivial part of the estuary due to dissipation of the tidal energy, from 1 to 0.2 N m-(2) for spring tides and 0.8 to 0.05 N m(-2) for neap tides. Flood currents... Tipo: Text Palavras-chave: Seine estuary (France); Spatial variability; Neap spring conditions; Intertidal mudflat; Shear stress; Tidal currents. Ano: 2006 URL: http://archimer.ifremer.fr/doc/2006/publication-1887.pdf Characterization and Evaluation of the Mechanical and Physical properties of Tef stem (Eragrostistef (Zucc.)Trotter) CIGR Journal gelaw, geta kidanemarim; Tilahun, Daniel; Zegeye, Adamu. Tef (Eragrostistef (Zucc.)Trotter) is atypical crop growing in most areas of Ethiopia, with the first area coverage. In this study mechanical properties of Tef stem the major four varieties, viz;  Local, Dz-Cr-438- (Kora), Dz-Cr-387/RIL-355(Quncho) and Dz-01-1880 (Guduru) was determined. The factors considered were moisture content, diameter and thickness of the Tef stem and analyze their mechanical properties using Texture Analyzer and Universal Testing Machine. The result indicated that the minimum and maximum value of modulus of elasticity was 0.13 and 2.6 Gpa at  moisture level 8.82% and 16.6%; 1.03 and 3.6Gpa at moisture level 10.32% and 13.79%; 0.85 and 3.22Gpa  at moisture level 7.65% and 12.72%; 1.27 and 3.88Gpa at moisture  level 5.5% and 19.70%... Tipo: Info:eu-repo/semantics/article Palavras-chave: PhD candidate and Asociate professors Modulus of elasticity; Flexural rigidity; Shear stress; Tef stem; Variety. Ano: 2019 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5112 Moisture dependent mechanical and thermal properties of Locust bean (Parkia biglobosa) CIGR Journal Sadiku, Olajide Ayodele; Bamgboye, Isaac.  The mechanical and thermal properties of African locust bean (Parkia biglobosa) seeds were investigated as a function of moisture content in the range of 5.9%–28.2% dry basis (d.b.).  These properties are required for the engineering design of equipment for handling and processing locust bean.  Universal Testing Machine was used to determine the mechanical properties at 5 mm/min load rating transversely.  Normal and shear stresses were determined for 200–500 g loads at 100 g interval.  Specific heat and thermal conductivity were determined using the method of mixtures and steady-state heat flow method respectively.  Linear decreases in rupture force (214.42–129.86 N) and rupture energy (109.17–73.46 N mm) were recorded, while deformation of the seed... Tipo: Info:eu-repo/semantics/article Palavras-chave: Agricultural & Environmental Engineering; Farm power & machinery; Crop production engineering Bulk density; Deformation; Rupture force; Shear stress; Moisture content; Thermal conductivity.. Ano: 2014 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2650 Drag reduction by polyethylene glycol in the tail arterial bed of normotensive and hypertensive rats BJMBR Bessa,K.L.; Belletati,J.F.; Dos Santos,L.; Rossoni,L.V.; Ortiz,J.P.. This study was designed to evaluate the effect of drag reducer polymers (DRP) on arteries from normotensive (Wistar) and spontaneously hypertensive rats (SHR). Polyethylene glycol (PEG 4000 at 5000 ppm) was perfused in the tail arterial bed with (E+) and without endothelium (E-) from male, adult Wistar (N = 14) and SHR (N = 13) animals under basal conditions (constant flow at 2.5 mL/min). In these preparations, flow-pressure curves (1.5 to 10 mL/min) were constructed before and 1 h after PEG 4000 perfusion. Afterwards, the tail arterial bed was fixed and the internal diameters of the arteries were then measured by microscopy and drag reduction was assessed based on the values of wall shear stress (WSS) by computational simulation. In Wistar and SHR groups,... Tipo: Info:eu-repo/semantics/article Palavras-chave: Shear stress; Flow-pressure response; Drag reduction; Endothelium; Polyethylene glycol; Hypertension. Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2011000800006 Effects of disturbed blood flow during exercise on endothelial function: a time course analysis BJMBR Paiva,F.M.; Vianna,L.C.; Fernandes,I.A.; Nóbrega,A.C.; Lima,R.M.. This study aimed to examine the time course of endothelial function after a single handgrip exercise session combined with blood flow restriction in healthy young men. Nine participants (28±5.8 years) completed a single session of bilateral dynamic handgrip exercise (20 min with 60% of the maximum voluntary contraction). To induce blood flow restriction, a cuff was placed 2 cm below the antecubital fossa in the experimental arm. This cuff was inflated to 80 mmHg before initiation of exercise and maintained through the duration of the protocol. The experimental arm and control arm were randomly selected for all subjects. Brachial artery flow-mediated dilation (FMD) and blood flow velocity profiles were assessed using Doppler ultrasonography before... Tipo: Info:eu-repo/semantics/article Palavras-chave: Blood flow restriction; Vascular function; Flow-mediated dilation; Shear stress. Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2016000400701 Human dental pulp stem cell adhesion and detachment in polycaprolactone electrospun scaffolds under direct perfusion BJMBR Paim,A.; Braghirolli,D.I.; Cardozo,N.S.M.; Pranke,P.; Tessaro,I.C.. Cell adhesion in three-dimensional scaffolds plays a key role in tissue development. However, stem cell behavior in electrospun scaffolds under perfusion is not fully understood. Thus, an investigation was made on the effect of flow rate and shear stress, adhesion time, and seeding density under direct perfusion in polycaprolactone electrospun scaffolds on human dental pulp stem cell detachment. Polycaprolactone scaffolds were electrospun using a solvent mixture of chloroform and methanol. The viable cell number was determined at each tested condition. Cell morphology was analyzed by confocal microscopy after various incubation times for static cell adhesion with a high seeding density. Scanning electron microscopy images were obtained before and after... Tipo: Info:eu-repo/semantics/article Palavras-chave: Cell adhesion; Perfusion; Shear stress; Stem cell; Electrospun scaffolds. Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2018000500615 Nitric oxide regulates angiotensin-I converting enzyme under static conditions but not under shear stress BJMBR Pertrini,C.M.; Miyakawa,A.A.; Laurindo,F.R.M.; Krieger,J.E.. Mechanical forces including pressure and shear stress play an important role in vascular homeostasis via the control of the production and release of a variety of vasoactive factors. An increase in vascular shear stress is accompanied by nitric oxide (NO) release and NO synthase activation. Previously, we have demonstrated that shear stress induces angiotensin-I converting enzyme (ACE) down-regulation in vivo and in vitro. In the present study, we determined whether NO participates in the shear stress-induced ACE suppression response. Rabbit aortic endothelial cells were evaluated using the NO synthase inhibitor L-NAME, and two NO donors, diethylamine NONOate (DEA/NO) and sodium nitroprusside (SNP). Under static conditions, incubation of endothelial cells... Tipo: Info:eu-repo/semantics/other Palavras-chave: Shear stress; Angiotensin-I converting enzyme; Nitric oxide; Endothelial cells. Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2003000900005 Registros recuperados: 8 Primeira ... 1 ... Última

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