Zebra Fish
I keep running into model organisms. The water flea, daphnia, is one. The
zebra fish, it turns out, is
another
model organism.
posted at: 11:38 |
path: /school |
link
Condiment Shelf Life
Colin and I often have little debates about how long things can last in
the fridge. Our most recent form of this is how to interpret the best
before date. We have now agreed that the best before date applies to the
food before it is opened. But what about after it has been opened? As
usual, it’s the internet to the rescue. For instance- here’s
a nice site that lists both unopened and opened shelf life of
condiments.
posted at: 17:44 |
path: /living |
link
Calculating Rotation Matrix
In a last ditch attempt to figure out how to get my agents doing the right
thing, I typed ‘calculating rotation matrix’ into google. The first hit I
got back was this one.
As it says, “The purpose here is to describe how to obtain a proper matrix
given a location and a target (or a vector), and an amount of roll.” I
also found someone trying to deal with the the same
problem.
posted at: 15:36 |
path: /school |
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Organic Lawn Care
Spring has arrived and many people are thinking about their lawns. My
friend Nancy (hi Nancy!) was asking me about corn gluten, so I did a bit
of research on it. It looks like useful stuff for controlling new weed
growth, according to sites like this
one. Weeds that are already established require something different.
Two organic post emergence pesticides that seem to be popular around the
net are Burnout and Weed-Aside, both described here.
Even these killers don’t necessarily deal with perennial weeds, however.
This further piqued my interest in how to deal with really entrenched
weeds. this
page has a nice discussion of how perennial grass weeds work. It
brings up the fact that some weeds are very hard to deal with unless you
use a systemic weed killer- basically something that doesn’t just kill the
top part of the plant, but that gets sucked into the plant and kills the
roots as well. It seems that an organic systemic weed killer is a bit of a
holy grail in organic gardening circles.
posted at: 16:57 |
path: /living |
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All material copyrighted by Jen Schellinck. All rights reserved.