Related Experiment Video
Updated: Feb 27, 2026

Making Record-efficiency SnS Solar Cells by Thermal Evaporation and Atomic Layer Deposition
Published on: May 22, 2015
A Proposed Process for Reliably Updating the Common Rule
Benjamin E Berkman1, David Wendler2, Haley K Sullivan2
1a National Institutes of Health Clinical Center and National Human Genome Research Institute.
Abstract:
The recent Common Rule revision process took almost a decade and the resulting changes are fairly modest, particularly when compared to the ambitious ideas proposed in the advance notice of proposed rulemaking (ANPRM) and notice of proposed rulemaking (NPRM). Furthermore, the revision process did not even attempt to tackle any of the Common Rule subparts pertaining to vulnerable populations (i.e., pregnant women and fetuses, prisoners, children) where commentators think the rules unduly restrict important research. We believe that this was a missed opportunity to make desirable changes, and that given the usual process the next opportunity to revisit the Common Rule is unacceptably remote. In this article, we argue that the Common Rule should be regularly reassessed, with a mechanism for making substantive (and expeditious) changes. Drawing on lessons learned from the recent revision process, we make recommendations about ways to structure future attempts to maximize the ability to make timely and necessary changes.
Related Concept Videos
Woodward–Hoffmann Selection Rules and Microscopic Reversibility
Midpoint Rule
Rules for Defining Functions
Rate-Determining Steps
In a multistep reaction mechanism, one of the elementary steps progresses significantly slower than the others. This slowest step is called the rate-limiting step (or rate-determining step). A reaction cannot proceed faster than its slowest step, and hence, the rate-determining step limits the overall reaction rate.
The concept of rate-determining step can be understood from the analogy of a 4-lane freeway with a short-stretch of traffic-bottleneck caused due to...
Global Regulatory Systems
Mason's Rule
Loop gain is determined by identifying and tracing a path from a node back to itself. This involves computing the product of branch gains along the loop. Each loop's gain is crucial for further...

