August 22nd, 2014
OK, this is quite annoying. It was plenty annoying when I was at a univerisity and 90% of the articles were available at publication, but that 10% always included a handful of important articles so it has always been a PITA. So now I’ll start future blogging!
I’ll tag interesting articles when they get published and follow up when I can actually read them. Many journals now are open access, but some release an article six months or a year after publication. Or sometimes the pdf gets posted. So I’ll tag intertesting articles when they hit the news and write a follow up when I can read them. Because titles and abstracts aren’t enough for articles with useful information!
Duration of urination does not change with body size. Patricia J. Yanga, Jonathan Phama, Jerome Chooa, and David L. Hu. PNAS vol. 111 no. 33p11932–11937.
BTW, PNAS used to release articles at publication. When did they go dark?!
Posted in Sci general, Science | No Comments »
August 18th, 2014
Nominations
These look interesting:
Best Novel (1595 nominating ballots)
Ancillary Justice, Ann Leckie (Orbit US/Orbit UK)
Neptune’s Brood, Charles Stross (Ace / Orbit UK)
Parasite, Mira Grant (Orbit US/Orbit UK)
Best Short Story (865 nominating ballots)
“If You Were a Dinosaur, My Love”, Rachel Swirsky (Apex Magazine, Mar-2013)
“The Ink Readers of Doi Saket”, Thomas Olde Heuvelt (Tor.com, 04-2013)
“Selkie Stories Are for Losers”, Sofia Samatar (Strange Horizons, Jan-2013)
“The Water That Falls on You from Nowhere”, John Chu (Tor.com, 02-2013)
Best Related Work (752 nominating ballots)
“We Have Always Fought: Challenging the Women, Cattle and Slaves Narrative”, Kameron Hurley (A Dribble of Ink)
The John W. Campbell Award for Best New Writer
Wesley Chu
Max Gladstone*
Ramez Naam*
Sofia Samatar*
Benjanun Sriduangkaew
Winners
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August 4th, 2014
I’m now set up for kegging beer, and am putting a brown ale into a keg. I want to hurry things along. Kegging usually takes 1-2 weeks, but I want the beer ready in 5 days. To speed things along, I’m doubling the pressure to 20 psi for the first two days, lowing the temperature, and shaking the keg a few times a day. After the first two days, I’ll reduce pressure to 10 psi. If I shake it after that and CO2 still goes in, I haven’t over carbonated. I’ll bring the temperature up to 38F the last day.
Here are instructions I found:
Kegging instructions
A carbonation table: Handy-Dandy Slow Force Carbonation Chart featuring Pressure vs. Temperature
Getting A Good Pour – Kegged Beer CO2 Line Length and Pressure
Cold and a long tap line help reduce foaming.
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April 2nd, 2014
Have the time displayed by colored liquids in glass tubes, either a column of liquid or a large segment. The time tube can be straight or circular.
Move the liquid by a mechanism where brass gears compress a bellows. The brass mechanism would be driven by a microcontroller.
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March 30th, 2014
The motors made for RC planes and cars are high speed and high power.
For example, the Turnigy Trackstar 1/10 12.0T 3300KV Brushless Motor, $23 specs are:
Kv: 3300
Max Voltage: 15v
Max current: 35amps
Watts: 550
Resistance: 0.0221Ohms
Max RPM: 50000
The load on a microfuge will be greater–22 tubes x 1.5 ml can be roughly 44g, figure a 100g total load with the rotor. So slower than max, but still quite fast.
High power ESC modules are sold to run these motors. So they take DC power, and a servo like signal (PWM), +5, GRD.
So a 10k RPM microfuge can be made with one of these motors + ESC, a servo for locking the lid, and a microcontroller to run it, take speed / time settings, and monitor and show the RPMs on a display.
Power could be from a PC power supply or a dedicated supply.
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