Archive for November, 2007

LDL Sizes?

There is obviously more to heart disease (and other related diseases) than simple total cholesterol and LDL/HDL ratios.  The myriad of information continuously has people searching for possible treatments or preventative lifestyle changes.  One factor I recently read about was related to the particle size of LDL’s.  Science Friday had a segment on good calories vs. bad calories and mentioned this concept.  Although I remember hearing something about LDL particle size before, I found this related article and found it interesting.  The human body is such a large system and it never ceases to amaze me with its complexities. 

Just a Test

I am just seeing if embedding a powerpoint is possible. 

Has Anyone Seen the Kilogram?

A student brought this article to my attention regarding the mass of a kilogram. 

Getting the measure of a kilogram describes the mass changes in the standard kilogram and the attempts to redefine this extremely important mass measurement.  If all balances and scales are calibrated off this standard, one can see the reaching implications if the mass of this standard changes.  It makes me think about accuracy and the difficulty in reproducing a massed object identical to a standard.  As technology improves maybe we will be able to count the “trillion trillion” atoms needed to standardize on a atom’s mass.