Introduction Peripheral T cells in rats differ in their expression of the membrane determinants CD4, CD8, QCA-1, CD45R, RT6 and Thy-1 [l-51. So combining these markers makes it possible to identify a large number of phenotypically different subsets of peripheral T cells. The lineage relationships between these subsets are unknown. The presence or absence of CD4, CD8, CD45R or RT6 expression hav...

It is generally accepted that the celerity of a discharge wave exceeds that of a floodwave. The discharge wave is the initial wavefront (shown by an increase in stage at a particular site), whereas the floodwave refers to the body of water moving downstream. Yet, few studies have investigated the varying relationship between discharge and suspended sediment concentration as floods propagate dow...

Motivated by recent experimental work of Burd et al., we propose a model of bi-directional ant traffic on pre-existing ant trails. It captures in a simple way some of the generic collective features of movements of real ants on a trail. Analysing this model, we demonstrate that there are crucial qualitative differences between vehicular- and ant-traffics. In particular, we predict some unusual ...

Process Automation Control System (PACS) requires high reliability because it processes hazerdous materials, which are often explosive and toxic. PACS has been mainly using 4-20mA analog communication overlaying on power supply because of its high reliablity. This analog communication needs one line to transmit to single value and it is uni-directional. Brand new PACS introduces field bus netwo...

In [2], Duhamel obtained the optimal endfire array excitation by extending the Riblet’s broadside array design method. So, similar to the Riblet’s distribution, the obtained endfire distribution is limited to odd numbered arrays. In this section, authors present a broadened formulation which can be used for both even as well as odd numbered arrays. The basic idea behind this formulation comes f...

In this study; experimental failure analysis was investigated on adhesively single-lap joints produced using adhesives reinforced with uni-directional glass fibers. Epoxy adhesive impregnated fiber were used to join composite plates joints. It is aimed strengthen the joint by layers between two plates. The loads of obtained compared attached non-reinforced adhesive. Also, 0o, 15o 30o and 45o re...