The stability of two-dimensional Poiseuille flow and plane Couette flow for concentrated suspensions is investigated. Linear stability analysis of the two-phase flow model for both flow geometries shows the existence of a convectively driven instability with increasing growth rates of the unstable modes as the particle volume fraction of the suspension increases. In addition it is shown that th...

The genus Gribodia Zavattari, 1912, is newly recorded from Vietnam and China. Gribodia nigra sp. nov. (China, Hainan) is described and figured and G. cupreipennis (Bingham) is redescribed. A key to six known species of the genus is provided.

In this work, we develop a method of straight lines for solving a Bingham problem that models the flow of waxy crude oils. The model describes the flow of mineral oils with a high content of paraffin at temperatures below the cloud point (i.e. the crystallization temperature of paraffin) and more specifically below the pour point at which the crystals aggregate themselves and the oil takes a je...

Stability of a Bingham fluid in Taylor-Couette flow is studied. Of interest is to determine the critical values of the inner and outer cylinder angular velocities which cause the linear instability in the system. We introduce a perturbation into the basic flow, and examine the linearized Navier-Stokes equations for the perturbation. Assuming a normal mode solution for the perturbation, we obtai...

It is a pleasure to comment on the valuable article by Dahm et al. (1) in this issue of the Journal and to provide my perspective on research needs and opportunities for progress in the challenging nutritional epidemiology research area. In doing so, I would like to first offer a tribute to the late Dr Sheila Rodwell (Bingham), senior author of the article by Dahm et al. For some decades, Dr Bi...

Redlich, The Inside Story. Pschiatry and Everyday Life. M.D. and June Bingham. New York: Alfred A. Knopf. Pp. 280. Many books have been written to tell the intelligent layman all he needs to know about his own mind, and few of them can be very cordially recommended. But the "Inside Story" is excellent from start to finish, and should be in everyone's library. Mrs. Bingham, who has written sever...

Trajectory forms in events consist of the path shape and the speed profile (Bingham, 1987; 1995). Wickelgren and Bingham (2004) showed that adults can use the speed profile as visual information to recognize events from different perspectives, despite perspective distortions and differences in optical components. We now investigate whether adults can use trajectory forms to recognize events whe...