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February 2008, Vol. 104, No. 2
In This Issue
COVER STORY
Piloting Bioreactors for Agitation Scale-Up
This article offers guidance on how to design appropriate experiments to measure scalable data for agitation in both aerobic and anaerobic bioreactors.
Gregory T. Benz
NEWS STORY
RFID - Rx for Drug Security?
Some pharmaceutical companies are turning to radio frequency identification to protect against counterfeiting and theft of expensive drugs.
Gerald Parkinson
SAFETY
Avoid Chemical Reactivity Incidents in Warehouses
Use this approach for the initial evaluation of potential reactivity hazards in storage applications.
J. Wayne Chastain, William W. Doerr, Scott Berger and Peter N. Lodal
OPINION
Dealing with Climate Change at the Local Level
Whatever problems may be caused by climate change, engineers will be expected to solve them. Now is the time to begin addressing the issues at the local and regional scale.
Paul A. Jennings
MODELING
Use Spreadsheets to Estimate Modeling Parameters
Dynamic process modeling based on non-uniformly sampled data and multiple sampling runs, even for nonlinear systems, can be performed using spreadsheet implementations of the weighted-least-squares (WLSQ) and Runge-Kutta WLSQ methods.
Tomas B. Co