Christmas dinner warm-up

For a pre-Christmas dinner test run, the wife is hosting another post-exam party for her fellow med school students. We’ve also started the monster task of our Christmas baking, so the kitchen has seen a lot of activity the past couple of days. It’s only going to get even busier from here on out.

My first attempt at nanaimo bars got off to a bit of a rocky, but very tasty start. Making it went ok, but when the wife wanted a variant without coconut, the second batch ended up not having enough graham crumbs for the amount of chocolate in the bottom part of the crust, so it turned out very chocolatey.

Then I screwed up the middle section, so had to disassemble the bars, scrape it off and re-do it. Then when it came time to cutting, the top chocolate layer ended up being not very cuttable, so the middle parts ended up getting squished out when I cut them into squares.

So they didn’t end up looking like much, but initial reports from the people at work that I shared them with were very good.

The first batch of spritzer cookies were finished yesterday. Only, oh about 5 more to go.
Then for the wife’s party of Friday, we’re making some greens, mac & cheese and roasting a turkey. Most of that will get started today. We usually do a pretty good job with the greens (I don’t eat them myself, but the people that do eat them have told me they’re very good). Starting with a good stock is important, and we usually make the greens with a homemade turkey stock. Yummy. Mac & cheese will be thrown together tonight for baking tomorrow, and the turkey will be brining overnight for roasting tomorrow.

All of this is just to get our cooking skills honed up for the arrival of the Horde next week.

On top of all that, we’re also heading out to go get the tree tonight. Looks like we’re going to get wet doing it too.

Sys admin truths

MisterOrange threw up a list of top 10 systems administrator truths that anybody with any sysadmin experience will easily relate to.
The follow-up was a list for the Users: End-User Troubleshooting Tips, which is also something all sysadmins should be able to relate to (having been Users at one point in their lives) and all Users should take note of.
Found at Slashdot

Doggie helper

The wife decided to have a bit of fun with Nala while we were wrapping presents.
Nala helping with gift wrapping

Good bye 2005 storm season, at last

With TS Epsilon(2005) finally dissipated away, the 2005 storm season is over and done with. NOAA has a recap of the 2005 storm season with the final tally.
NOAA 2005 Hurricane tally
(image from NOAA)
Time to rest a little bit before getting ready for next year. I may have to rethink this coastal living thing.

Image intensifier distortions

One of the things I’ve been working on lately is collect images to fill out my image artifact gallery. Today while acceptance testing a new C-arm, I had a chance to demonstrate what happens when large hunks of metal get moved past or near the image intensifier.
All conventional vacuum bottle based image intensifiers are prone to distortions caused by magnetic fields or changes in the ambient magnetic field (which is what large metal objects do), changing the path of the electrons as they travel from the input photocathode to the output window. Normally, image intensifiers are shielded from any stray magnetic fields by mu-metal. It usually works pretty well, but mu-metal can only do so much. IIs will still be prone to distortion when large enough hunks of metal get moved by.
Below is an image of a linear grid phantom (click on the images to see a larger version in the teaching file gallery). All the lines should be pretty straight and perpendicular.
Image intensifier S distortion
Below is the same phantom, but now a small stretcher has been placed next to the image intensifier. If you look carefully, you will see that now the lines look slightly S-shaped.
Image intensifier S distortion
Here a much larger stretcher with more metal in it has been placed next to the II. Now the lines are much more distorted and more S-shaped.
Image intensifier S distortion
If the large metal object is moved past the II during fluoroscopy, you see this cool twisting distortion effect going on as the object gets closer, and then returning back to normal as the object moves away. If you’ve ever been working on a CRT monitor when a large metal object moves by fairly closely, you will notice a similar phenomenon.