Bioenergetics Model
Mostrando 1-12 de 14 artigos, teses e dissertações.
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1. Water temperature, body mass and fasting heat production of pacu (Piaractus mesopotamicus)
ABSTRACT Knowledge on fasting heat production (HEf) of fish is key to develop bioenergetics models thus improving feeding management of farmed species. The core of knowledge on HEf of farmed, neotropical fish is scarce. This study assessed the effect of body mass and water temperature on standard metabolism and fasting heat production of pacu, Piaractus meso
An. Acad. Bras. Ciênc.. Publicado em: 27/04/2017
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2. Padrões bioenergéticos das aranhas de teia: considerações sobre a unidade e a diversidade do fenômeno / Patterns of bioenergetic of web spiders: considerations about the unity and diversity of the phenomenon
The physiological mechanisms are often applied to explain important evolutionary adaptations (e.g. endothermy) and ecology (e.g. physiological limitations to occupy a particular microhabitat) of vertebrates. Despite the fact that it improves vertebrates ecological and evolutionary hypotheses with possible processes and mechanisms, it is scarcely used to unde
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/03/2012
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3. Reflexões sobre a visão biomédica e a visão holísitca no tratamento das lombalgias crônicas
The physiotherapy represents actually, in the medical field, therapeutic specialty which uses resources and approaches that include two sorts of medical rationalities: the biomedical and the holistic practice, in the context of health-disease-cure finds itself increasingly under discussion. Both classical physics (Cartesian Newton model) and quantum physics
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/12/2010
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4. Development and evaluation of a mathematical model to predict the nutritional value of rations for cattle liable to rumen fiber mass restrictions / Desenvolvimento e avaliação de um modelo matemático para predição do valor nutricional de rações para bovinos sujeito às restrições da massa de fibra no rúmen
A mathematical model based on Cornell Net Carbohydrate and Protein System (CNCPS) was developed and adapted to evaluate beef cattle rations at tropical climate conditions. The presented system differs from CNCPS in the modelling of insoluble particles digestion and passage kinetics, which allowed to estimate ruminal fiber mass and its effects on animal perfo
Publicado em: 2007
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5. PREDIÇÃO DA CONCENTRAÇÃO DE MERCÚRIO EM TUCUNARÉ USANDO MODELOS DE BALANÇO DE MASSA E BIOENERGÉTICO / PREDICTING MERCURY CONCENTRATION IN TUCUNARÉ USING MASS BALANCE AND BIOENERGETICS
The mercury used in the artisanal mining (garimpo) of gold in the Amazon region is emitted to the atmosphere, soil and rivers. Once in the atmosphere, the metal is oxidized and immediately deposited. In the water, the transformation to methylmercury takes place mostly due to the action of microorganisms. The formation of methylmercury increases the dispersio
Publicado em: 2004
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6. Charge pair model of bioenergetics: redox enzymes.
A model of electron transfer between redox enzymes is constructed on the assumption that the apoenzyme contains orientable units, which are tentatively identified with flipping amino acids. The model is based on the entatic state hypothesis, and the rate of electron transfer is derived.
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7. Charge pair model of bioenergetics: Energy transfer*
The electron tunnelling distance between redox enzymes is estimated. The energy transfer mechanism between a pair of charges is described. The dielectric degrees of freedom are incorporated into the electron transfer rate formula.
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8. An Integrated Model of Cardiac Mitochondrial Energy Metabolism and Calcium Dynamics
We present an integrated thermokinetic model describing control of cardiac mitochondrial bioenergetics. The model describes the tricarboxylic acid (TCA) cycle, oxidative phosphorylation, and mitochondrial Ca2+ handling. The kinetic component of the model includes effectors of the TCA cycle enzymes regulating production of NADH and FADH2, which in turn are us
Biophysical Society.
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9. Theoretical problems related to the attachment of microtubules to kinetochores.
A possible model is analyzed for the maintenance of attachment of a shortening microtubule (MT) to a kinetochore. In this model it is assumed that a MT is inserted and held in a sleeve or channel of the outer layer of a kinetochore while subunits are lost from the MT tip through the central layer of the kinetochore. A second problem considered is the element
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10. Modeling Cardiac Action Potential Shortening Driven by Oxidative Stress-Induced Mitochondrial Oscillations in Guinea Pig Cardiomyocytes
Ischemia-induced shortening of the cardiac action potential and its heterogeneous recovery upon reperfusion are thought to set the stage for reentrant arrhythmias and sudden cardiac death. We have recently reported that the collapse of mitochondrial membrane potential (ΔΨm) through a mechanism triggered by reactive oxygen species (ROS), coupled to the open
The Biophysical Society.
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11. Diastolic dysfunction and altered energetics in the alphaMHC403/+ mouse model of familial hypertrophic cardiomyopathy.
An arginine to glutamine missense mutation at position 403 of the beta-cardiac myosin heavy chain causes familial hypertrophic cardiomyopathy. Here we study mice which have this same missense mutation (alphaMHC403/+) using an isolated, isovolumic heart preparation where cardiac performance is measured simultaneously with cardiac energetics using 31P nuclear
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12. Overexpression of human copper,zinc-superoxide dismutase (SOD1) prevents postischemic injury
Superoxide and superoxide-derived oxidants have been hypothesized to be important mediators of postischemic injury. Whereas copper,zinc-superoxide dismutase, SOD1, efficiently dismutates superoxide, there has been controversy regarding whether increasing intracellular SOD1 expression would protect against or potentiate cellular injury. To determine whether i
The National Academy of Sciences.