## Acoustic rheometer

modulus in terms of acoustic properties, sound speed V and attenuation α Acoustic **rheometer** measures sound speed and attenuation of ultrasound for a set of frequencies in megahertz range. These measurable parameters can be converted into real and imaginary components

**wikipedia.org**| 2010/9/25 22:23:36

## Extensional viscosity

where is the extensional viscosity or elongational viscosity is the normal stress : is the rate of strain : For a Newtonian Fluid , the elongational viscosity is three times the shear viscosity which can be derived using the continuity equation for incompressible fluids. [ edit

**wikipedia.org**| 2010/9/25 2:53:40

## Spheronisation

In addition to this the process is useful in several aspects to improve the product; it can simplify plant procedures and help to reduce costs. The process is well known and widely used in the pharmaceutical industries but its use is becoming increasing recognized in other areas of industrial

**wikipedia.org**| 2011/4/17 0:44:57

## List of microfluidics research groups

This list of microfluidics research groups gives a comprehensive overview of academic research organisations in the field of microfluidics , sorted geographically. Any sufficiently notable research group (which in general can be considered as any group having published in well regarded, high

**wikipedia.org**| 2011/10/3 19:46:35

## Annular velocity

complicated procedures and equipment for its determination. For drilling fluid applications a **rheometer** is used. [ edit ] See also Fluid Dynamics Drilling fluid Rheology Mud Engineer Petroleum Engineering Drilling rig Oilfield Oil well Oil field acronyms List of oilfield service

**wikipedia.org**| 2010/9/26 14:24:47