Diffusing System
Mostrando 1-12 de 22 artigos, teses e dissertações.
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1. Severity classification for idiopathic pulmonary fibrosis by using fuzzy logic
OBJECTIVE: To set out a severity classification for idiopathic pulmonary fibrosis (IPF) based on the interaction of pulmonary function parameters with high resolution computed tomography (CT) findings. INTRODUCTION: Despite the contribution of functional and radiological methods in the study of IPF, there are few classification proposals for the disease base
Clinics. Publicado em: 2011
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2. Análise do endividamento e liquidez de empresas por meio de um sistema especialista difuso
As demonstrações contábeis divulgadas pelas empresas tem sido objeto de diversos estudos ao longo do tempo. Diversos livros foram escritos sobre análise das demonstrações contábeis. E, para alguns autores, mais do que uma técnica, a análise dessas demonstrações é uma arte. O presente estudo consiste em propor um modelo de sistema especialista que
Publicado em: 2006
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3. Análise do endividamento e liquidez de empresas por meio de um sistema especialista difuso
As demonstrações contábeis divulgadas pelas empresas tem sido objeto de diversos estudos ao longo do tempo. Diversos livros foram escritos sobre análise das demonstrações contábeis. E, para alguns autores, mais do que uma técnica, a análise dessas demonstrações é uma arte. O presente estudo consiste em propor um modelo de sistema especialista que
Publicado em: 2006
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4. Construção e validação de mapa estratégico com ênfase na dimensão da aprendizagem e crescimento: estudo de caso em uma unidade de uma Instituição de Ensino Superior
This paper proposes the construction and validation of a Strategic Map (SM), with emphasis in the perspective of learning and growing, applicable to an unity of a private university with communitary characteristics, and based on Balanced Scorecard (BSC), contemplating its four perspectives: financial, of its clients, of its internal processes and of learning
Publicado em: 2006
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5. Typing of Enterobacter spp. by bacteriocin susceptibility and its use in epidemiological analysis.
Most clinical isolates of Enterobacter cloacae are bacteriocinogenic and susceptible to bacteriocins. Both rapidly diffusing, nonsedimentable, protease-susceptible and slowly diffusing, sedimentable, protease-resistant bacteriocins are produced. A practicable system was devised for epidemiological typing of E. cloacae isolates by their patterns of susceptibi
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6. Diffusible viral interference during arbovirus plaque formation.
A radially diffusing zone of nonspecific interference was observed surrounding plaques of Western equine encephalitis virus. The increase in diameters of the zones of interference were linear and more rapid than increases in plaque diameters. These observations raise the possibility that viral-induced interference could account for the diminished growth of W
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7. Time-dependent diffusion in tubes with periodic partitions
The presence of obstacles leads to a slowdown of diffusion. We study the slowdown when diffusion occurs in a tube, and obstacles are periodically spaced identical partitions with circular apertures of arbitrary radius in their centers. The mean squared displacement of a particle diffusing in such a system at large times is given by ⟨Δx2(t)⟩=2Defft, t→
American Institute of Physics.
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8. Fluorescence immunoassay based on long time correlations of number fluctuations.
We report the development of a fluorescence-based immunoassay technique relying on the physical phenomena of random number fluctuations and diffusion, which we review. By determining the autocorrelation of the fluctuations in the fluorescent intensity, this methid is able to measure the amount of labeled antigen or antibody that is bound to micrometer-sized
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9. Nucleation and Growth of Integrin Adhesions
We present a model that provides a mechanistic understanding of the processes that govern the formation of the earliest integrin adhesions ex novo from an approximately planar plasma membrane. Using an analytic analysis of the free energy of a dynamically deformable membrane containing freely diffusing receptors molecules and long repeller molecules that inh
The Biophysical Society.
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10. The NO hypothesis: possible effects of a short-lived, rapidly diffusible signal in the development and function of the nervous system.
Several observations suggest that the Ca2(+)-dependent postsynaptic release of nitric oxide (NO) may be important in the formation and function of the vertebrate nervous system. We explore here the hypothesis that the release of NO and its subsequent diffusion may be critically related to three aspects of nervous system function: (i) synaptic plasticity and
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11. Stripe formation in juvenile Pomacanthus explained by a generalized Turing mechanism with chemotaxis
Current interest in pattern formation can be traced to a seminal paper by Turing, who demonstrated that a system of reacting and diffusing chemicals, called morphogens, can interact so as to produce stable nonuniform concentration patterns in space. Recently, a Turing model has been suggested to explain the development of pigmentation patterns on species of
The National Academy of Sciences.
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12. Induction of the lambda receptor is essential for effective uptake of trehalose in Escherichia coli.
Trehalose transport in Escherichia coli after growth at low osmolarity is mediated by enzyme IITre of the phosphotransferase system (W. Boos, U. Ehmann, H. Forkl, W. Klein, M. Rimmele, and P. Postma, J. Bacteriol. 172:3450-3461, 1990). The apparent Km (16 microM) of trehalose uptake is low. Since trehalose is a good source of carbon and the apparent affinity