- Popular-level introduction to the five methods used to identify exoplanets.
- Another good profile of the SEP.
- ArXiv gets some money to improve stuff.
- Flying fish are hard to believe. It’s something of a tragedy that fish capable of long-distance flight never evolved (that we know of?). They are so bird like it’s startling, and this ability has evolved independently multiple times.
- In addition to Russia and China, the US also at one time had ICBMs deployed by rail.
For nuclear power plants governed by the United States Nuclear Regulatory Commission, SAFSTOR (SAFe STORage) is one of the options for nuclear decommissioning of a shut down plant. During SAFSTOR the de-fuelled plant is monitored for up to sixty years before complete decontamination and dismantling of the site, to a condition where nuclear licensing is no longer required. During the storage interval, some of the radioactive contaminants of the reactor and power plant will decay, which will reduce the quantity of radioactive material to be removed during the final decontamination phase.
The other options set by the NRC are nuclear decommissioning which is immediate dismantling of the plant and remediation of the site, and nuclear entombment which is the enclosure of contaminated parts of the plant in a permanent layer of concrete.Mixtures of options may be used, for example, immediate removal of steam turbine components and condensors, and SAFSTOR for the more heavily radioactive containment vessel. Since NRC requires decommissioning to be completed within 60 years, ENTOMB is not usually chosen since not all activity will have decayed to an unregulated background level in that time.
- The fraction of the federal budget devoted to NASA peaked in 1966, three years before the Moon landing.
LaTeX in commentsInclude [latexpage] to render LaTeX in comments. (More.)
- Links for July 2018 (3)
- Yuan Now the problem seems to be gone (at least for NewsBlur). Thanks! Yuan – Jul 18, 3:30 AM
- Jess Riedel Yikes, it looks like I'm not getting it on my feed reader either. That would... – Jul 17, 8:39 PM
- Yuan Hi Jess, I have been experiencing difficulties with the RSS feed of your blog lately.... – Jul 17, 5:40 PM
- Links for April-May 2018 (7)
- Yuan Hi Jess, long time reader and occasional commenter here. Your monthly internet selection posts are... – Jun 18, 11:29 AM
- Jordan Cotler I always look forward to your (bi-)monthly links -- wouldn't change a thing. – May 22, 1:46 AM
- Yuchen Hello Jess! I like some of your selections and I'm stealing a link :) To... – May 10, 4:53 AM
- Stephen Jordan I like your blog posts and would suggest continuing in the same pattern. A collection... – May 10, 12:30 AM
- Links for June 2018 (4)
- Jess Riedel Fixed, thanks! – Jun 16, 4:05 PM
- Scott Aaronson It’s BQP, my man, not “QBP”! – Jun 16, 3:58 PM
- Jess Riedel Hey thanks, fixed. I suspect I was a victim of the annoying website behavior where... – Jun 15, 12:40 PM
- Tildeon The "Brightline" link doesn't seem to match the text. – Jun 15, 12:37 PM
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