Reactions Time Scales
Mostrando 1-10 de 10 artigos, teses e dissertações.
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1. Translation into Portuguese and validation of the Blood Donation Reactions Inventory
Background: the Blood Donation Reactions Inventory (BDRI) scale was proposed as part of a study about the predictors of psychological reactions in volunteer blood donors, as uncomfortable reactions are associated with a lower probability to return for further donations. Objective: to translate the Inventory into Brazilian Portuguese and evaluate its psych
Rev. Bras. Hematol. Hemoter.. Publicado em: 2014-04
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2. Hidrodinâmica e transferência de oxigênio em três biorreatores Airlift de circulação interna geometricamente semelhantes
Internal-loop airlift reactors (ALR) are a special class of pneumatic reactors. The use of this type of reactor has been attractive for chemical and biological reactions because of their simple construction without moving parts and low energy costs when compared with stirred tank reactors. In the present work, a study related to hydrodynamic and oxygen trans
Publicado em: 2009
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3. Avaliação da percepção de dor em neonatos pré-termo sob sedo-analgesia
This study aimed to: (1) assess the reactions of pain in preterm newborns who are under infusion of analgesic and sedative drugs during procedures for collecting blood sample and (2) test the validity of two behavioral instruments and two physiological indicators used for assessment pain in this population. For the validation of pain assessment tools, were f
Publicado em: 2008
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4. Retorno ao trabalho após o nascimento de um filho: percepções de professoras sobre sua experiência.
The participation of women in the paid workforce has increased significantly in recent decades, allowing women to make an important contribution to the family income. Apart from their professional activities, many women are also responsible for the greater part of household labor and childcare activities. Reconciling these responsibilities can be difficult,
Publicado em: 2006
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5. Determinação de Escalas Temporais para Reações entre Íons-pesados Leves através de Medidas de Correlações a Momentos Relativos Pequenos / Time scale determination for light heavy-ion reactions through small relative momenta correlation measurements
Neste trabalho foram realizadas, no Laboratório Pelletron do Instituto de Física da Universidade de São Paulo, medidas de coincidência entre partículas com momentos relativos pequenos para os sistemas 160+10B e 160+ 12C nas energias de 62,5 e 64,0 MeV, respectivamente. Para isso, foi utilizado um hodoscópio composto de 14 telescópios do tipo E-E, capa
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/12/1999
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6. Femtosecond dynamics of flavoproteins: Charge separation and recombination in riboflavine (vitamin B2)-binding protein and in glucose oxidase enzyme
Flavoproteins can function as hydrophobic sites for vitamin B2 (riboflavin) or, in other structures, with cofactors for catalytic reactions such as glucose oxidation. In this contribution, we report direct observation of charge separation and recombination in two flavoproteins: riboflavin-binding protein and glucose oxidase. With femtosecond resolution, we o
The National Academy of Sciences.
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7. Guest exchange in an encapsulation complex: A supramolecular substitution reaction
Encapsulation complexes are reversibly formed assemblies in which small molecule guests are completely surrounded by large molecule hosts. The assemblies are held together by weak intermolecular forces and are dynamic: they form and dissipate on time scales ranging from milliseconds to days—long enough for many interactions, even reactions, to take place w
The National Academy of Sciences.
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8. Analysis of Reaction-Diffusion Systems with Anomalous Subdiffusion
Reaction-diffusion equations are the cornerstone of modeling biochemical systems with spatial gradients, which are relevant to biological processes such as signal transduction. Implicit in the formulation of these equations is the assumption of Fick's law, which states that the local diffusive flux of species i is proportional to its concentration gradient;
The Biophysical Society.
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9. Fast Evaluation of Fluctuations in Biochemical Networks With the Linear Noise Approximation
Biochemical networks in single cells can display large fluctuations in molecule numbers, making mesoscopic approaches necessary for correct system descriptions. We present a general method that allows rapid characterization of the stochastic properties of intracellular networks. The starting point is a macroscopic description that identifies the system's ele
Cold Spring Harbor Laboratory Press.
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10. Stochastic simulation of the mammalian circadian clock
Circadian (nearly 24-h) clocks are remarkably accurate at timing biological events despite the randomness of their biochemical reactions. Here we examine the causes of their immunity to molecular noise in the context of a detailed stochastic mathematical model of the mammalian circadian clock. This stochastic model is a direct generalization of the determini
National Academy of Sciences.