Dynamic Equilibrium States
Mostrando 1-12 de 24 artigos, teses e dissertações.
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1. Adicção a drogas e funcionamentos limites: suas expressões e convergências no Rorschach / Drug Addiction and Borderline Personality: their expressions and convergences at Rorschach
The drug addiction is characterized through the use of a substance, to which the power of functioning as the only mean capable of bringing relief to the anguish states internally lived by an individual is attributed. There is no consensus regarding the gathering of chemically dependent patients in a specifically addictive structure, however, in spite of the
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/10/2012
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2. Essays in macroeconomy and dynamic term-structure models
This thesis is composed of three articles with the subjects of macroeconomics and - nance. Each article corresponds to a chapter and is done in paper format. In the rst article, which was done with Axel Simonsen, we model and estimate a small open economy for the Canadian economy in a two country General Equilibrium (DSGE) framework. We show that it is imp
Publicado em: 19/12/2009
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3. O processo produtivo capitalista na agricultura e a introdução dos organismos geneticamente modificados : o caso da cultura da soja Roundup Ready (RR) no Brasil
This study brings to light the question of the introduction of genetically modified organisms (GMOs) in Brazilian agriculture, particularly soybean production. The text discusses how changes in intellectual property rights could permit the capitalistic appropriation of large amounts of socially generated plus-value in agricultural sector, and of nature too,
Publicado em: 2009
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4. Dynamic processes in complex networks / Processos dinamicos em redes complexas
We study the statistical properties of in²uence networks subjected to external perturbations. We consider networks whose nodes have internal states that can assume the values 0 or 1. The internal states can change depending on the state of the neighboring nodes. We let N1 nodes be frozen in the state 1, N0 be frozen in the state 0 and the remaining N nodes
Publicado em: 2007
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5. Estados críticos orientacionais em cristais líquidos liotrópicos induzidos por campos magnéticos. / Orientations critical states in lyotropic liquid crystals induced by magnetic fields.
Liquid crystalline structures are found in materials made from molecules which are anisotropic in shape; such material are characterized mainly by a long range orientational order. In the nematic phase, the rodlike molecules tend to align parallel to each other. The average orientation defines a unit vector, called director n. Lyotropic liquid crystals are u
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 19/12/2000
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6. Competing spin dynamics in ising systems
We study ferromagnetic and antiferromagnetic Ising models in contact with a heat reservoir, and subject to an external source of energy. The contact with the heat bath is simulated by a single-spin flip Glauber dynamics, while the flux of energy is simulated by the two-spin exchange Kawasaki process. Pair approximation and Monte Carlo calculations are employ
Brazilian Journal of Physics. Publicado em: 2000-03
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7. NMR determination of the conformational and drug binding properties of the DNA heptamer d(GpCpGpApApGpC) in aqueous solution.
1D and 2D NMR spectroscopy (500/600 MHz) has been used to investigate the equilibrium conformational states of the deoxyheptanucleotide 5'-d(GpCpGpApApGpC), as well as its complexation with the phenanthridinium drug ethidium bromide (EB). Quantitative determination (reaction constants and thermodynamic parameters) of the conformational equilibrium of the hep
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8. Increased vesicle endocytosis due to an increase in the plasma membrane phosphatidylserine concentration.
Endocytosis vesiculation consists of local membrane invaginations, continuously generated on the plasma membrane surface of living cells. This vesiculation process was found to be activated in vivo by the generation of a transmembrane surface area asymmetry in the plasma membrane bilayer, after enhancement of transbilayer phospholipid translocation. The obse
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9. Alternate model for the cooperative equilibrium binding of myosin subfragment-1-nucleotide complex to actin-troponin-tropomyosin.
In this paper we introduce an alternate model for the equilibrium binding of S-l-N (S-l, subfragment l of myosin; N, nucleotide) on the troponin-tropomyosin-actin complex, including the influence of Ca2+ on this binding. In our previous model [Hill, T. L., Eisenberg, E. & Greene, L. E. (1980) Proc. Natl. Acad. Sci. USA 77, 3186-3190], we assumed that each tr
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10. Dynamic Monte Carlo study of the folding of a six-stranded Greek key globular protein.
To help elucidate the general rules of equilibrium globular protein folding, dynamic Monte Carlo simulations of a model beta-barrel globular protein having the six-stranded Greek key motif characteristic of real globular proteins were undertaken. The model protein possesses a typical beta-barrel amino acid sequence; however, all residues of a given type (e.g
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11. Quaternary structure of hemoglobin in solution
Many important proteins perform their physiological functions under allosteric control, whereby the binding of a ligand at a specific site influences the binding affinity at a different site. Allosteric regulation usually involves a switch in protein conformation upon ligand binding. The energies of the corresponding structures are comparable, and, therefore
The National Academy of Sciences.
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12. Phospholamban structural dynamics in lipid bilayers probed by a spin label rigidly coupled to the peptide backbone
We have used chemical synthesis and electron paramagnetic resonance to probe the structural dynamics of phospholamban (PLB) in lipid bilayers. Derivatives of monomeric PLB were synthesized, each of which contained a single spin-labeled 2,2,6,6,-Tetramethyl-piperidine-N-oxyl-4-amino-4-carboxylic acid amino acid, with the nitroxide-containing ring covalently a
National Academy of Sciences.