This paper concerns the one dimensional problem of the porous-thermo-elasticity. Two kinds of dissipation process are considered: the viscosity type in the porous structure and the thermal dissipation. It is known that when only thermal damping is considered or when only porous damping is considered we have the slow decay of the solutions. Here we prove that when both kinds of dissipation terms...

K. M. Fonseca Romero, S. G. Mokarzel, and M. C. Nemes 1 Departamento de F́ısica, Universidad Nacional, Bogotá, Colombia Departamento de F́ısica–Matemática, Instituto de F́ısica, Universidade de São Paulo, CP 66318, 05315-970 São Paulo, S.P., Brazil 3 Departamento de F́ısica, Pontificia Universidade Católica de São Paulo, R. Marquês de Paranaguá, 111, São Paulo, S. P., Brazil 4 Departamento de F́ısic...

In this paper, by introducing a different distribution function and starting from the Boltzmann equation as well as the Maxwell-Boltzmann distribution, we obtain a Boltzmann Bhatnagar-Gross-Krook (BGK) equation for thermal flows with viscous heat dissipation in the incompressible limit. The continuous thermal BGK model is then discretized over both time and phase space to form a lattice BGK mod...

Butachlor (BUT) is a chloroacetanilide herbicide widely applied to rice paddies to control annual grass and broad-leaf weeds. A BUT-degrading bacterial strain (PK) was isolated from paddy soils. Biochemical and 16S rRNA sequencing characteristics confirmed the strain as Pseudomonas aeruginosa (99% resemblance). The isolate dissipated BUT (100 μg/mL) in an M9 liquid medium with a rate of 0.5 ± 0...

We review the transient version of the work and fluctuation theorem. We verify the theorem explicitly by a microscopically exact analytic calculation of the probability distribution for work or entropy production in three physical examples: the Joule experiment, the compression/expansion of a gas and the process of effusion. To cite this article: B. Cleuren et al., C. R. Physique 8 (2007). © 20...

We consider the effects of a velocity-independent friction force on cantilever damping. It is shown that this dissipation mechanism causes nonlinear effects in the cantilever vibrations. The size of the nonlinear-ity increases with decreasing cantilever velocity. Our analysis makes it possible to understand Stipe's et al. [1] experiments where an amplitude dependence of the cantilever eigenfreq...

That decoherence can take place in the presence of energy conservation seems to be a poorly known fact. That lack of knowledge has, for example, bedevilled the discussion of the 'black hole information' problem. I present a simple model that illustrates such energy-free decoherence.

Pesticide risk and impact assessment models critically rely on and are sensitive to information describing dissipation from plants. Despite recent progress, experimental data are not available for all relevant pesticide-plant combinations, and currently no model predicting plant dissipation accounts for the influence of substance properties, plant characteristics, temperature, and study conditi...

Crack fronts play a fundamental role in engineering models for fracture: they are the location of both crack growth and the energy dissipation due to growth. However, there has not been a rigorous mathematical definition of crack front, nor rigorous mathematical analysis predicting fracture paths using these fronts as the location of growth and dissipation. Here, we give a natural weak definiti...