Directing Effect of Substituents: meta-Directing Groups
Directional Derivatives
Directing Effect of Substituents: ortho–para-Directing Groups
Maximizing the Directional Derivative
ortho–para-Directing Deactivators: Halogens
Directional Terms
You might also read
Articles linked to this work by shared authors, journal, and citation graph.
Updated: Jun 22, 2026

Implementation of Portable Emissions Measurement Systems (PEMS) for the Real-driving Emissions (RDE) Regulation in Europe
Published on: December 4, 2016
1Hospital at Night and EWTD, London Deanery/NHS.
Despite the European Working Time Directive (EWTD) being law for over a decade, some UK nurses voluntarily work extended hours. This study explores the reasons behind nurses choosing to exceed standard working hours.
Area of Science:
Background:
Purpose of the Study:
Main Methods:
Main Results:
Conclusions: