Rob S. B. Beanlands, MD, FRCPC, FACC,* Graham Nichol, MD, FRCPC,†† Ella Huszti, MSC,¶ Dennis Humen, MD, FRCPC, FACP, FACC,† Normand Racine, MD, FRCPC,# Michael Freeman, MD, FACC, FRCPC,‡ Karen Y. Gulenchyn, MD, FRCPC, Linda Garrard, BSC, RN,* Robert deKemp, PHD,* Ann Guo, MENG,* Terrence D. Ruddy, MD, FRCPC, FACC,* Francois Benard, MD, FRCPC,** André Lamy, MD, MHSC, Robert M. Iwanochko, MD, FRC...

We investigate the asymptotic relaxation of so-called pulled fronts propagating into an unstable state, and generalize the universal algebraic velocity relaxation of uniformly translating fronts to fronts that generate periodic or even chaotic states. A surprising feature is that such fronts also exhibit a universal algebraic phase relaxation. For fronts that generate a periodic state, like tho...

Two electroconvection (EC) pattern morphologies--a cellular and a subsequent roll pattern--have been detected in the same frequency range in a nematic with positive permittivity and conductivity anisotropies. The frequency dependences of the onset voltages and critical wave numbers have been determined both for homeotropic and planar alignments. It has been proven that both pattern morphologies...

We consider the Boltzmann equation for a gas in a horizontal slab, subject to a gravitational force. The boundary conditions are of diffusive type, specifying the wall temperatures, so that the top temperature is lower than the bottom one (Benard setup). We consider a 2-dimensional convective stationary solution, which is close for small Knudsen number to the convective stationary solution of t...

João Nobrega de Almeida Jr., Adriana Lopes Motta, Flávia Rossi, Edson Abdala, Ligia Camera Pierrotti, Adriana Satie Gonçalves Kono, Maria Del Pilar Estevez Diz, Gil Benard, Gilda Maria Barbaro Del Negro I Hospital das Clı́nicas da Faculdade de Medicina da Universidade de São Paulo, Microbiology Section, Divisão de Laboratório Central, São Paulo/SP, Brazil. II Instituto do Câncer, Faculdade de Me...

Let K be a finite abelian extension of the rational field Q. If A is a central simple algebra over K then we let [A] denote the class of A in the Brauer group B(K) of K. The Schur subgrozcp S(K) of B{K) consists of those algebra classes which contain a simple component of the group algebra K[GJ for some finite group G. M. Benard and M. Schacher [2, Theorem 1, p. 3801 have shown that if [A] is i...

In this short note, we describe a steady-state solution of full y comp ress ible convection wh ich cou ld be used for comparisons wit h those obtained with the lat ti ce gas approach. T his solution has been obtained wi th a pse udospectral code. It consists of two steady rolls at a maximum Mach number of 0.60 an d at a maximum Reynolds numbe r of 700 . Slip boundary cond it ions for the veloci...

We show that the P u (!) / ! ?7=3 shear velocity power spectrum gives rise to a P (!) / ! ?4=3 power spectrum for a passively advected scalar, as measured in experiment high Rayleigh number Rayleigh Benard ow, we can account for the measured scaling exponents equally well as the Bolgiano Obukhov theory (BO59). Yet, of the two explanations , only the shear approach might be able to explain why n...

the fluid flow and heat transfer in lid-driven enclosures filled with cu-water nanofluid is numerically investigated. the moving vertical walls of the enclosure  are maintained in a constant temperature, while the horizontal walls are insulated. the hybrid scheme is used to discretize the convection terms and simpler algorithm is adopted to couple the velocity field and pressure in the momentum...