Load Train
Mostrando 13-19 de 19 artigos, teses e dissertações.
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13. TRAÇADO AUTOMÁTICO DE ENVOLTÓRIAS DE ESFORÇOS EM ESTRUTURAS PLANAS UTILIZANDO UM ALGORITMO EVOLUCIONÁRIO / AUTOMATIC TRACING OF ENVELOPES IN PLANAR STRUCTURES USING A EVOLUTIONARY ALGORITHM
The objective of this work is to develop a tool for obtaining envelopes of internal forces due to load-trains in the FTOOL software. Usually, envelopes are obtained through interpolation of limiting values on pre- selected sections along the structure. These values are obtained based on the positioning of the loadtrain in relation to influence lines of inter
Publicado em: 2005
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14. O papel do sistema de informações no processo de planejamento: discussão utilizando a situação do transporte de cargas no eixo Rio-São Paulo / x
An example of an information system, to be used within a planning process, is presented. The chosen area is the interurban load transportation. Two modes of transportation are approached - the higway and the railway. The information System consists of two models: the first one, based on the Gravity Model, estiamtes the flow of load vehicles in several stretc
Publicado em: 1976
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15. Pharmacological and physiological properties of the after-hyperpolarization current of bullfrog ganglion neurones.
1. The slowly decaying, calcium-dependent after-hyperpolarization (a.h.p.) that follows action potentials in bullfrog ganglion B cells has previously been shown to be generated by a potassium current called IAHP. We have recorded IAHP using a switched, single-electrode hybrid clamp where current-clamp mode was changed to voltage-clamp mode immediately after
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16. Mechanism of rate-dependent pH changes in the sheep cardiac Purkinje fibre.
1. The mechanism of the rate-dependent decrease in intracellular pH (pHi) and its recovery were studied in isolated sheep cardiac Purkinje fibres. Intracellular Na+ activity (aiNa) and pHi were measured using ion-selective microelectrodes. Twitches were elicited by field stimulation or by depolarizing pulses applied using a two-microelectrode voltage clamp.
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17. The slow Ca(2+)-activated K+ current, IAHP, in the rat sympathetic neurone.
1. Adult and intact sympathetic neurones of the rat superior cervical ganglion maintained in vitro at 37 degrees C were analysed using the two-electrode voltage-clamp technique in order to investigate the slow component of the Ca(2+)-dependent K+ current, IAHP. 2. The relationship between the after-hyperpolarization (AHP) conductance, gAHP, and estimated Ca2
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18. Effect on the indo-1 transient of applying Ca2+ channel blocker for a single beat in voltage-clamped guinea-pig cardiac myocytes.
1. We used rapid solution changes to investigate the mechanisms which trigger Ca2+ release from the sarcoplasmic reticulum (SR) in guinea-pig ventricular myocytes. We patch-clamped myocytes at 36 degrees C and used indo-1 to monitor intracellular Ca2+. Before each test pulse, we established a standard level of SR Ca2+ load by applying a train of conditioning
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19. The effect of internal sodium and caesium on phasic contraction of patch-clamped rabbit ventricular myocytes.
1. The voltage dependence of phasic contraction was assessed in rabbit ventricular myocytes. Phasic contraction at all potentials was abolished by exposure to ryanodine-thapsigargin, showing that it was due primarily to Ca2+ release from the sarcoplasmic reticulum (SR). Experiments were performed at 35 degrees C, cells were whole-cell patch clamped and contr