Leukocyte recruitment into inflammatory sites is initiated by a reversible transient adhesive contact with the endothelium called leukocyte rolling, which is thought to be mediated by the selectin family of adhesion molecules. Selectin-mediated rolling precedes inflammatory cell emigration, which is significantly impaired in both P- and L-selectin gene-deficient mice. We report here that approx...

Leukocyte rolling has been postulated to be mandatory for subsequent leukocyte adhesion and tissue injury observed during ischemia/reperfusion. The objective of this study was to systematically assess this hypothesis at the microvascular level by examining the effects of various concentrations of a selectin-binding carbohydrate (fucoidin) on the increased rolling and adhesion of leukocytes in p...

The methods of modern physical materials science were used to analyze the evolution microhardness, tribological properties, dislocation substructure and phase composition rails with increased wear resistance contact endurance DT 400 IR category after missed tonnage 187 million gross tons on experimental ring Russian Railways. It is shown that extremely long-term operation accompanied by a decre...

In the presented work, a parametric multibody simulation model is that capable of predicting friction torque and kinematics tapered roller bearings. For highly accurate prediction bearing friction, consideration solid lubricant mandatory. bearings in particular, contact between rolling element raceway importance. Friction forces end face inner ring rib as well cage pocket contacts are also cons...

The mechanical rolling conditions in hot strip mills are precisely defined by various variables, which are taken directly froth the rolling schedule (separation force, torque. speed. strip thickness) or calculated from figures of the rolling schedule and dimensions of the mill (strip reduction, roll diameter etc.). These variables allow to describe the mechanical rolling conditions of all passe...

To analyze the problem of vibration and bifurcation in rotor system aeroengine with elastic ring squeeze film damper (ERSFD) supports, theoretical equation dynamic is developed this paper, based on system, (ERSFD), three supports. The estimated analytical solution oil force solved using short bearing approximation theory semi-oil inference suspension inner outer boss contact. Considering stiffn...

This paper develops a constructive method for finding a nilpotent basis for a special class of smooth nonholonomic distributions. The main tool is the use of the Goursat normal form theorem which arises in the study of exterior differential systems. The results are applied to the problem of finding a set of nilpotent input vector fields for a nonholonomic control system, which can then used to ...

The importance of leaf rolling in rice (Oryza sativa L.) has been widely recognized. Although several studies have investigated rice leaf rolling and identified some related genes, knowledge of the molecular mechanism underlying rice leaf rolling, especially outward leaf rolling, is limited. Therefore, in this study, differential proteomics and gene expression profiling were used to analyze rol...