214 A–220 A
A Random Walk through Electron-Transfer Kinetics.
(424 KB PDF)
Brownian dynamics simulations of the random motion of redox molecules can provide insights into the physical factors that determine the kinetic limit in voltammetric measurements. Ryan J. White and Henry S. White at the University of Utah describe the role of collisional encounters between the redox molecule and the electrode in determining when a reaction becomes kinetically controlled.

221 A–226 A
Beyond the t-Test: Statistical Equivalence Testing.
(344 KB PDF)
Given the variability inherent to most instrument systems, the question of whether a measurable difference is real can be difficult to answer. And how much of a difference is too much? Giselle B. Limentani, Moira C. Ringo, Feng Ye, Mandy L. Bergquist, and Ellen O. McSorley at GlaxoSmithKline demonstrate that the two one-sided t-Test may be a better option than the familiar Student t-Test.

205 A
Editorial
Editorial Review Policy. (64 KB PDF)
The Editors reserve the right to reject articles without peer review. The criteria for reaching this decision are laid out.

213 A
Bio Sphere
Where the lipids are. (64 KB PDF)
Because new polyene tags are similar to natural lipids, they reflect the location of lipids in cell membranes better than conventional tags.

227 A–231 A
Product Review
Versatile TOFMS. (92 KB PDF)
More and more researchers are using TOFMS instruments for proteomics and other applications.