Inverse centrifugal effect induced by collective motion of vortices in rotating thermal convection.

When a fluid system is subject to strong rotation, centrifugal fluid motion is expected, i.e., denser (lighter) fluid moves outward (inward) from (toward) the axis of rotation.

Vortices as Brownian particles in turbulent flows.

Brownian motion of particles in fluid is the most common form of collective behavior in physical and biological systems. Here, we demonstrate through both experiment and numerical simulation that the movement of vortices in a rotating turbulent convective flow resembles that of inertial Brownian particles, i.e.

[Study on the expression of TLR4 on splenocytes and its relation with CD4(+) CD25(+) regulatory T cells in peripheral blood in severely burnt rats].

Aim: To investigate the expression of Toll like receptor 4(TLR4) on splenocytes and TNF-alpha mRNA, the dynamic changes of CD4(+) CD25(+) regulatory T cell(Treg) and endotoxin(ET) in peripheral blood of burnt rats during the early phase, and to explore the mechanism against inflammatory reaction in intestine-derived infection after burn.

Methods: 64 SD male rats were randomly separated into control group and burn model groups. Rats of burn model group were burnt with vapor under 3 mPa pressure and 108 degrees Celsius temperature for 8 seconds to achieve deep partial-thickness burn, and a 30% total body surface area (TBSA) burn model was made.