March 2007
Monthly Archive
Monthly Archive
.: From Wikipedia:
Capillary action, capillarity, or capillary motion is the ability of a substance (the standard reference is to a tube in plants but can be seen readily with porous paper) to draw a substance up against gravity. It occurs when the adhesive intermolecular forces between the liquid and a substance are stronger than the cohesive intermolecular forces inside the liquid. . . . The same effect is what causes porous materials to soak up liquids. (emphasis added)
.: And now you know why it’s a bad idea to use, in lieu of a coffee machine, a mug stuffed with overflowing paper towels to make your coffee.
.: I’d show you a picture, but I already cleaned up the mess and don’t want to do it again.
.: My sister’s textbook, Molecular Biology of the Gene, 5th edition, sports this sexy cover:

.: Those of you who are biologically-inclined will have to squint to see what’s wrong, since this was the largest picture I could find. What you can clearly see, though, should be enough: an uncoiled chromosome . . . with ribosomes attached to it . . . making proteins.
.: Yikes.
.: By the way, that Watson guy on the cover? He’s the one on the left.
.: In an unrelated science topic, my sister pointed me to the Calbiochem Interactive Signaling Pathways website. There’s lots of geeky stuff there, like this pathway poster for Alzheimer’s Disease:
AKT/Protein Kinase B
Alzheimer’s Disease
Angiogenesis
Apoptosis
Checkpoint Signaling and DNA Repair
Cytokine Network
GSK-3 Signaling
MAPK Family
mTOR
NF-kB
Nitric Oxide
p53
PKA Activation
Protein Kinase
Protein Tyrosine Kinase Related Pathways
Protein Kinase C
Ubiquitin-Proteasome
.: Collect them all!
.: I’m staying with my brother and grandparents for spring break. Several little thoughts and events have occurred since Saturday, among them:
.: My sister should be in town any minute now. Maybe I’ll tell her all the geeky stuff I was going to put into this post.