Changes in the behavior of sputum viscoelasticity due to differences in macroscopic appearance of sputum brought about by stirring and those due to the addition of an expectorant to purulent sputum in vitro, were studied in a coaxial cylinder rheometer. First, initial results from stirring the sputum indicated the following: Samples of untreated sputum showed no obvious differences among the th...

We investigate the coefficients generated by expressing the falling factorial (xy) as a linear combination of falling factorial products xy for l, m = 1, . . . , k. Algebraic and combinatoric properties are discussed, some in relation to Stirling numbers.

This paper presents an experimental investigation regarding the drag and instabilities involved in free-falling cylinders across different boiling regimes. We aim to identify mechanisms that cause as well quantify strength of these forces for temperatures between 25 oC 550 oC. Understanding regimes is essential when designing sensitive instruments, such microelectronic devices. Cylinders with s...

The mechanical properties of a homologue series of side-chain mesomorphic netM.orks were studied with a piezo-rheometer over frequencies ranging from 10~~

A new concrete rheometer is introduced including its innovation, actual design, working rules,calibration, and reliability. modified design of Tattersall two-point device created. Some ofcomponents are purchased from local foreign markets, while other components themanufacturing process locally fabricated. The matching viscosity method determining the mixerviscometer constants demonstrated foll...