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Showing 1 to 20 of 34 for “"uptake kinetics"”.
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Oxygen Uptake Kinetics in Severe Intensity Exercise
… study was to describe mathematically the oxygen uptake kinetics during cycle ergometry, and to examine the effect of intensity on the kinetic responses within the severe domain. Sixteen volunteers performed a series of exercise tests at a range of intensities selected to elicit fatigue in ~3 to …
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The measurement of oxygen uptake kinetics in children
… of the rate and magnitude of change of oxygen uptake to dynamic exercise, oxygen uptake kinetics (V02 KINETICS provides an alternative approach to exercise testing. A submaximal, intermittent, pseudo-random binary sequence (PRBS) exercise test to measure V02 KINETICS may provide a useful method …
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Multifrequent work rate forcings in the assessment of oxygen uptake kinetics.
… might be reflected in a determination of oxygen uptake (VO[2]) kinetics.The kinetics of VO[2] have been quantified in response to step, impulse, ramp and sinusoidal changes in work rate (WR). An alternative approach uses a technique in which the WR is perturbed according to a pseudorandom binary …
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Bioaccumalation of metals in mullet from Mhlathuze Estuary and the effect of Cu and Pb on the uptake kinetics,haematology and acid-base balance of Liza dumerelii.
Mhlathuze Estuary came into being when the original Richards Bay was divided into the northern part, which was dredged to form the habour and the southern part, which was reserved for the preservation of natural resources as a sanctuary. This sanctuary was however disturbed during development. The …
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Exercise response and the effect of supplemental oxygen during interval training on O2 uptake kinetics, blood lactate levels, and endurance performance in patients with mild, moderate and severe cystic fibrosis
… cardiovascular abnormalities, alteration in O2 uptake kinetics and reduced muscle strength may contribute to the reduced exercise performance in individuals with CF patients. The purpose of this research was to compare the exercise response in patients with different CF severities using non- …
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Vo(2) transitional response to a crossover from priming exercise
The question regarding oxygen uptake kinetics centers on the rate-limiting step. This study was designed to observe the oxygen uptake response that occurs between a crossover of modes of priming exercises. Participants completed three exercise trials. Trial 1 involved cycling from rest to a target …
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Assessing interactions between nutrients and toxicity : influences of nitrogen and phosphorus on triclosan toxicity to the aquatic macrophyte "lemna gibba".
… endpoints such as elemental stoichiometry and uptake were also differentially affected according to nutrient – triclosan treatments. In particular, tissue-N inhibition was more pronounced that tissue-P leading to N:P dose-response trends, which were most sensitive in P-limited exposure media. …
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Intracellular Transport in Cancer Treatments: Carbon Nanohorns Conjugated to Quantum Dots and Chemotherapeutic Agents
… and UV-VIS/FL spectroscopy. Their cellular uptake kinetics, uptake efficiencies, and intracellular distribution were determined in three malignant cell lines (breast – MDA-MB-231, bladder – AY-27, and brain – U87-MG) using flow cytometry and confocal microscopy. Intracellular …
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Metal-triazolate frameworks for the capture of water vapor and ammonia
… enable these frameworks to exhibit record water uptake as well as record static and dynamic ammonia capacities. Optimization of the pore diameter has led to materials which adsorb large volumes of water with complete reversibility, portending application in the production of potable water in …
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Phosphorus physiology of the marine cyanobacterium Trichodesmium
… cyanobacteria include: inorganic phosphate (Pi) uptake, dissolved organic phosphorus (DOP) hydrolysis, and polyphosphate (polyP) biosynthesis and catabolism. These three pathways lay the foundation for the four chapters that make up the body of this thesis. Chapter two examines the relative …
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Entwicklung von Fermentationsprozessen zur Produktion rekombinanter Antikörperfragmente in Pichia pastoris und Nicotiana tabacum
… the analysis of fermentation conditions, growth kinetics and substrate uptake kinetics as well as experiments to stimulate expression in plant cells. For Pichia pastoris, the development of fermentation strategies focused on optimal feeding strategies of glycerol and methanol during the sequence …
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Role of Water in the Formation, Transformation and Fate of Secondary Organic Aerosol
… highly oxidized, likely arising from enhanced uptake of organic acids due to their high water solubility. The amount of high molecular weight compounds increases with acidity, suggesting the role of acidity in governing organic composition. The relative humidity (RH) dependence of SOA aging by …
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Dual Receptor Uptake of Low-Density Lipoprotein Docosahexaenoic Acid (LDL-DHA) Elicits Differential Sensitivity Across Breast Cancer Subtypes
… SR-B1 receptors, in addition LDL nanoparticle uptake kinetics was evaluated in each cell line. Thereafter, the cytotoxicity of LDL-DHA nanoparticles was assessed across the panel of breast cancer cells. Animal experiments showing efficacy of LDL-DHA nanoparticle are currently in progress, with …
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Transport properties of anion exchange membranes for fuel cell applications
… interactions were detected, and water and CO2 uptake kinetics was explored.
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Phosphorus physiology of the marine cyanobacterium Trichodesmium
… cyanobacteria include: inorganic phosphate (Pi) uptake, dissolved organic phosphorus (DOP) hydrolysis, and polyphosphate (polyP) biosynthesis and catabolism. These three pathways lay the foundation for the four chapters that make up the body of this thesis. Chapter two examines the relative …
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Synthesis, characterization, and evaluation of photo-active amphiphiles for gene delivery applications
… To overcome the obstacles in the cellular uptake and transfection pathways which impede nonviral gene delivery, novel lipids, polymers, and dendrimers are being engineered. Cationic lipid vectors have been widely characterized as gene delivery tools as they electrostatically interact with …
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Investigation of the Photoenhanced Reduction of Nitrogen Dioxide (NO2) on Organic Films and Above Soils as the Missing Source of Daytime Tropospheric Nitrous Acid (HONO)
… concerning the effect of UV-A radiation on the uptake kinetics of gas-phase NO2 on various phenolic-containing organic films using a wetted-wall flow tube (WWFT) photoreactor. Experimental methods are discussed in detail. A time-dependent model for non-equilibrium conditions incorporating both …
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Understanding environmental influences on bioaccumulation of contaminants of emerging concern among fish species.
… First, I conducted a field study examining uptake of pharmaceuticals by rainbow trout in an urban river, influenced by snowmelt, during summer and fall seasons. I found pharmaceutical concentrations in fish corresponded to levels in surface water, but uptake kinetics for study …
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Evaluation of amino acid transport and protein metabolism in the mammary gland of dairy cattle
… enabling evaluation of unidirectional uptake kinetics. This method was used to evaluate AA concentrations representing 16, 100, 186, and 271% of cow plasma AA concentrations. Amino acid uptake was not saturable within the in vivo range for eleven AA. Arginine, Val, and Pro exhibited …
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The Effects of Age and Long-Term Endurance Training on VO2 Kinetics
The kinetics of the adjustment of pulmonary oxygen uptake (VO2) was examined during step transitions from 20 W to moderate-intensity cycling in young (Y), middle-aged (M), and older (O) endurance trained and untrained men. VO2p was measured breath-by-breath and changes in deoxygenated hemoglobin …
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