When You Need to Know: The Obstetric Anaesthesia Scientific Evidence Project

The Menopause : What you Need to Know

The only trouble with Richard Smith, for 13 years Editor of the British Medical Journal, is that he writes well but tends to repeat himself. Editors, and ex-editors, are a small group in the medical world, but we like to think we have been influential. This book is a series of stories of Richard Smith’s interaction with prospective authors, medical researchers of all sorts, the authorities of t...

What you need to know when you can't find your UNIX system administrator

If you use UNIX, you know that it can be a technically challenging environment. And if you're like most users, you have a job to do aside from exploring your operating system-like analyzing that hot new stock, running...

What you need to know about ... concussion.

Coronary Arteries: what you need to know

Everything You Need to Know About Mechanisms

A) The Correct Use of Arrows to Indicate Electron Movement The ability to write an organic reaction mechanism properly is key to success in organic chemistry classes. Organic chemists use a technique called arrow pushing to depict the flow or movement of electrons during chemical reactions. Arrow pushing helps chemists keep track of the way in which electrons and their associated atoms redistri...