Greetings!
Well, I dug myself in over my head with a basic syntax debacle in Perl for my Linux box.
Here's the code sample which I wish to fix:
#!/usr/bin/perl
$value = '$(pgrep some-process | wc) -gt 0';
TEST:
if ($value)
{
sleep 2;
zenity --warning --text="some-process is running."...
Good day.
I've had a tussle with this for a bit, and just now decided to break down and float it out for community assistance.
In the scenario which is at issue, we have a "black box" load which may be essentially resistive or may be partially inductive; but has been precharacterized to...
Greetings!
Well, I dug out my old 4.0 floppies for a quick 5-year check (still good after after 21 years); and got bumbling with the program after a quick install from my trusty CD-R backup. This software is always great fun to work with; still a touchstone of convenience and power ;o)
Well...
Hello folks!
Had a niggle to finally look at the foundational formula concerning the relationship of CR to efficiency for the air-standard Otto Cycle, i.e. E = 1 - (1 / CR ^ (K - 1)), where K = 1.4
To my surprise, we see a relatively small increase for E across a significant span of CR values...
Hello folks.
Ran out of fingers and toes; and just needed a little help with some simple heating work on a small amount of 304 stainless (8000 kg/m3; 500J/kg.K (0-100°C) -- http://www.azom.com/details.asp?ArticleID=965).
Here's what I have.
First, I am working with what amounts to a...
Hello Folks.
I believe that this will be a REALLY simple affair to one of the anointed ;o)
OK.
We have a square tube 1" in diameter X 2' long spinning at 3,000 RPM (n); filled with H20.
Metric: The spinning radius is .3 meters (r); the watermass weight (for the .3 meter radius) is .1944 kg...
Good day, Folks.
I have a classically-simple question for the community today -- just checking my math and fishing for an additional equation ;o)
As a backgrounder, I'm attempting to estimate the power required to sustain a body in motion against the sum of all forces which are working to...
Good day, all.
I'm starting this thread as a follow-up to a previous posting (which went on for about 3 years at the forum):
thread2-58711
The whole works ended, in my opinion, not so satisfactorily. The stake which seemed to kill off all further viability discussion for the technology was a...
Good day.
I have a question for better minds than mine; as I am not a chemicals person myself :o)
I am interested in the prospect of changing plain sulfur dioxide scrubwater, sulfurous acid (H2SO3), into a non-tox fluid which might even have some commercial value.
I have discovered the...
