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The changing course of multiple sclerosis: rising incidence, change in geographic distribution, disease course, and
Melinda Magyari1, Per Soelberg Sorensen
1Department of Neurology, Danish Multiple Sclerosis Center and the Danish Multiple Sclerosis Registry, Rigshospitalet and University of Copenhagen, Copenhagen, Denmark.
Purpose Of Review:
This review provides a brief update of new research findings on the changing epidemiology, disease course, and prognosis of multiple sclerosis (MS).
Recent Findings:
Evidence not only continues to support the female predominance in incidence and prevalence of the disease but also supports an increase in incidence of MS in geographic areas that were previously considered to be low incidence for the disease.
Summary:
An increased interest in population-based registries and databases will provide more valid epidemiological measures and observational studies conducted in well-defined study populations. Such studies are crucial for an accurate description of both changing prognosis of MS and differential characteristics of the various MS phenotypes.
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Global Climate Change
Work Done During Volume Change
Consider a gas confined to a cylinder fitted with a movable piston at one end. If the gas expands from volume V1 to volume V2, it exerts a force on the piston, such that the piston moves by a distance dr.
The work done by the gas on the piston can be expressed as
Net Change Theorem
Standard Entropy Change for a Reaction
Le Chatelier's Principle: Changing Temperature
To understand this phenomenon, consider the elementary reaction:
Application of Rates of Change

