Tissue Flows
Mostrando 1-12 de 42 artigos, teses e dissertações.
-
1. Effect of herbage allowances on biomass flows in Italian ryegrass
RESUMO: Este trabalho foi conduzido com o objetivo de determinar os fluxos de tecidos foliares em diferentes estádios fenológicos do azevém (Lolium multiflorum Lam.), pastejado por cordeiras, manejado sob três níveis de oferta de forragem (6; 9 e 12 kg de MS/100 kg de peso corporal), sob lotação intermitente. O delineamento experimental foi inteirame
Cienc. Rural. Publicado em: 10/07/2019
-
2. Leaf tissue flows and defoliation patterns of Alexandergrass grazed by heifers receiving energy supplement
ABSTRACT. The study was carried out to evaluate defoliation patterns and to quantify leaf tissue flows in Alexandergrass (Urochloa plantaginea (Link.) Hitch) grazed by beef heifers receiving whole rice bran in three levels of supplementation (0, 0.5 and 1 % of body weight). A rotational stocking grazing method and two area replications were utilized. The exp
Acta Sci., Anim. Sci.. Publicado em: 04/07/2019
-
3. Modelagem da Microestrutura de Tecidos Cardíacos
A few decades ago the cardiac tissue was believed to be an uniformly connected continumm. Currently, it is known that the cardiac cells are connected to each other via special protein channels called gap junctions, through which the ionic current flows between neighboring cells. The cardiac cells are arranged in distinct layers of muscle fibers surrounded by
Publicado em: 2011
-
4. DINÂMICA DO CRESCIMENTO DE AZEVÉM ANUAL SUBMETIDO A DIFERENTES INTENSIDADES DE PASTEJO / GROWTH DYNAMICS OF ITALIAN RYEGRASS UNDER DIFFERENT GRAZING INTENSITIES
Estudou-se a dinâmica de crescimento de azevém (Lolium multiflorum Lam.) sob diferentes intensidades de pastejo, por meio de perfilhos marcados. O delineamento experimental foi inteiramente casualizado, com quatro repetições (transectas) e três tratamentos constituídos por intensidades de pastejo: Alta, Média, Baixa, correspondentes ao desaparecimento
Publicado em: 2009
-
5. Comparison of the effects of lactated Ringer solution with and without hydroxyethyl starch fluid resuscitation on gut edema during severe splanchnic ischemia
The type of fluid used during resuscitation may have an important impact on tissue edema. We evaluated the impact of two different regimens of fluid resuscitation on hemodynamics and on lung and intestinal edema during splanchnic hypoperfusion in rabbits. The study included 16 female New Zealand rabbits (2.9 to 3.3 kg body weight, aged 8 to 12 months) with s
Brazilian Journal of Medical and Biological Research. Publicado em: 2008-07
-
6. Morphogenesis and dynamics of herbage accumulation in marandu palisadegrass swards [Brachiaria brizantha (Hochst. ex A. Rich) cv. Marandu] subjected to regimes of intermittent stocking by beef cattle / Morfogênese e dinâmica do acúmulo de forragem em pastos de capim-marandu [Brachiaria brizantha (Hochst. ex A. Rich) cv. Marandu] submetidos a regimes de lotação intermitente por bovinos de corte
O acúmulo de forragem é um processo dinâmico, mediado por alterações em respostas morfogênicas e demografia de perfilhos, que envolve o balanço entre crescimento e senescência. O manejo do pastejo pode alterar esse balanço, afetando a produção e a eficiência de utilização da forragem produzida. Objetivo deste trabalho foi estudar os padrões de
Publicado em: 2007
-
7. Morphophysiological characteristics and herbage accumulation in mombaça grass subjected to defoliation regimes / Características morfofisiológicas e acúmulo de forragem em capim-mombaça submetido a regimes de desfolhação
Grazing systems that take into account the rhythm of regrowth of forage plants after defoliations can optimise herbage accumulation and ensure the control of sward structure. In these context, the objective was to evaluate patterns of response of Panicum maximum cv. Mombaça to defoliation in two experiments using measurements of sward morphogenetic and stru
Publicado em: 2006
-
8. A subplacenta da paca (Agouti paca, Linnaeus 1766) / The subplacenta of the paca (Agouti paca, Linnaeus 1766)
The rodents of suborder hystricomorph, in which is classified the Agouti paca, present hemochorial type placentation and develops an unique structure known as subplacenta. In spite of many report of its presence in several species, the possible functions of this structure related to placenta and pregnancy remains speculative, mainly due to the diversity of f
Publicado em: 2005
-
9. Passive water flows driven across the isolated rabbit ileum by osmotic, hydrostatic and electrical gradients.
Water flows generated by osmotic and hydrostatic pressure and electrical currents were measured in sheets of isolated rabbit ileum at 20 degrees C. Flows across the mucosal and serosal surfaces were monitored continuously by simultaneous measurement of tissue volume change (with an optical lever) and net water flows across one surface of the tissue (with a c
-
10. Vortex shedding as a precursor of turbulent electrical activity in cardiac muscle.
In cardiac tissue, during partial blockade of the membrane sodium channels, or at high frequencies of excitation, inexcitable obstacles with sharp edges may destabilize the propagation of electrical excitation waves, causing the formation of self-sustained vortices and turbulent cardiac electrical activity. The formation of such vortices, which visually rese
-
11. Renin-Angiotensin System Inhibition in Conscious Dogs during Acute Hypoxemia: EFFECTS ON SYSTEMIC HEMODYNAMICS, REGIONAL BLOOD FLOWS, AND TISSUE METABOLISM
The role of the renin-angiotensin system in mediating the circulatory and metabolic responses to hypoxia was studied in three groups of conscious dogs that were infused continuously with normal saline, teprotide (10 μg/kg per min), and saralasin (1 μg/kg per min), respectively. Hypoxia was produced by switching from breathing room air to 5 or 8% oxygen-nit
-
12. Intercellular and lymphatic pathways of the canine palatine tonsils.
The palatine tonsils play a key role in initiating immune responses against antigenic material entering the mouth and their lymphatic pathways are important in disseminating immunological information to the lymph nodes and other mucosal surfaces. Scanning and transmission electron microscopy and Mercox casts were used to examine the intercellular and lymphat