Absorption Time Course
Mostrando 1-12 de 36 artigos, teses e dissertações.
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1. Nutritional aspects of potato plants for seed tuber production in protected condition / Aspectos nutricionais da batateira para produção de tubérculo-semente em ambiente protegido
In spite of its importance and the great number of studies on the potato (Solanum tuberosum L.) crop, in the tropical conditions the existing researches on mineral nutrition of the potato plant grown for seed tuber production, in field and in protected conditions, are scarce. The seed tuber production in protected conditions, as the system used by IAC (São
Publicado em: 2007
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2. The Shiga toxin 2 B subunit inhibits net fluid absorption in human colon and elicits fluid accumulation in rat colon loops
Shiga toxin (Stx)-producing Escherichia coli (STEC) colonizes the large intestine causing a spectrum of disorders, including watery diarrhea, bloody diarrhea (hemorrhagic colitis), and hemolytic-uremic syndrome. It is estimated that hemolytic-uremic syndrome is the most common cause of acute renal failure in infants in Argentina. Stx is a multimeric toxin co
Brazilian Journal of Medical and Biological Research. Publicado em: 2004-06
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3. Obtenção, caracterização e utilização de puba como materia-prima na produção de etanol
"Puba" was produced through six alternative experiments, using three cassava varieties and two types of containers and experimental conditions. The resulting "puba" was submitted to proximate composition, particle distribution, damaged starch, water and alcohol soluble acidity, blue value, water absorption, water solubility, pasting properties analyses and m
Publicado em: 1993
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4. Number of visits to a state in a random walk, before absorption, and related topics.
Equations are derived for the probability of n visits to a given state during the course of a random walk on a finite diagram that starts from a specified state and ends with absorption. By deriving the mean number of visits in two different ways, certain conjectures or theorems are encountered that connect properties of different but related diagrams in an
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5. A Study of Rubidium Accumulation in Euglena gracillis1
The absorption of Rb+ by Euglena gracillis var. bacillaris was examined, and an active uptake process could be detected within 1 hour. This was established by experiments that included a time course study and metabolic depression by either reducing the temperature or by addition of 2,4-dinitrophenol.
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6. Thermal lens measurements in the cornea.
Q-switched pulses from a neodymium/YAG (yttrium-aluminium-garnet) laser were passed through corneal discs taken from the enucleated eyes of three baboons and four rabbits. The time course of heat dissipation following absorption of laser energy by the tissue was studied with the use of a second continuous wave laser beam acting as a probe. It was found that
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7. Nanosecond absorption spectroscopy of hemoglobin: elementary processes in kinetic cooperativity.
A nanosecond absorption spectrometer has been used to measure the optical spectra of hemoglobin between 3 ns and 100 ms after photolysis of the CO complex. The data from a single experiment comprise a surface, defined by the time-ordered set of 50-100 spectra. Singular value decomposition is used to represent the observed spectra in terms of a minimal set of
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8. Effect of Removal of the Root Tip on the Development of Enhanced Rb+ Absorption by Corn Roots 1
Samples of primary root tissue of corn (Zea mays L.) were aged either in CaSO4 solution or in humid air, after which they were immersed for 10 minutes in a solution containing 0.1 mm86RbCl. Aging in solution, but not in humid air, enhanced the subsequent rate of Rb+ absorption. Excision of roots before aging was followed by greater enhancement than when exic
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9. Light-scattering study of depolymerization kinetics of sickle hemoglobin polymers inside single erythrocytes.
The time course of intracellular depolymerization of hemoglobin S aggregates is directly observed by using microscope laser light-scattering spectroscopy in single sickle erythrocytes upon slow reoxygenation. From the correlation functions of the light intensity scattered from a single cell, we determine the average diffusion coefficient as well as the fract
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10. A pharmacokinetic model to study the excretion of trichloroethylene and its metabolites after an inhalation exposure.
For a better understanding of absorption, distribution, excretion, and metabolism of trichloroethylene the time-course of blood concentration of the vapour and urinary excretion of its metabolites was examined using a pharmacokinetic model. After a single experimental exposure in which four men inhaled 100 parts per million (ppm) of trichloroethylene for fou
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11. Light-enhanced Chloride Uptake by Wheat Laminae: A Comparison of Chopped and Vacuum-infiltrated Tissue
The time course of 36Cl− uptake from 5 mm KCl by 1.5-mm leaf segments of Triticum aestivum L. seedlings has been determined over 24 hours both in the light and in the dark. A light-enhanced uptake of Cl− develops after a few hours. Using whole laminae which have been water-injected by vacuum infiltration, a light-enhanced uptake is apparent from zero tim
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12. Dependence of the single photon response on longitudinal position of absorption in toad rod outer segments.
Light responses were recorded from toad rods in order to study the dependence of the kinetics and amplitude of the single photon response on the longitudinal position of excitation within the rod outer segment. Membrane current was recorded from the inner segment of an isolated rod with a suction electrode while stimulating the outer segment with a dim trans