Slashdot Mirror


User: mdsolar

mdsolar's activity in the archive.

Stories
0
Comments
3,905
First seen
Last seen
Profile
(view on slashdot.org)

Comments · 3,905

  1. Re:Dear Slashdot on Novel Model Illustrates The Finer Details Of Nuclear Fission (phys.org) · · Score: 1

    Only that nuclear physics is cool. Getting close to calculable is a big advance.

  2. How much computation you ask? on Novel Model Illustrates The Finer Details Of Nuclear Fission (phys.org) · · Score: 5, Informative

    The researchers extended the density functional theory (DFT) modeling method designed for electronic structure systems to strongly interacting many-fermion systems and real-time dynamics, creating a time-dependent superfluid local density approximation (TDSLDA). For the study reported, evaluating the theory amounted to solving 56,000 complex coupled nonlinear, time-dependent, three-dimensional partial differential equations for a 240Pu nucleus using a highly efficient parallelized graphic processing unit (GPU) code. The calculations required 1760 GPUs and 550 minutes total wall time on Titan, a Cray XK7 supercomputer located at the Oak Ridge Leadership Computing Facility (OLCF).

  3. Basic problem on Greenpeace Leaks Big Part Of Secret TTIP Documents (bbc.com) · · Score: 4, Insightful

    Agreement let's corporation sue governments for doing their job and win every time. Makes corporations sovereign and governments unable to act on behalf of their citizens.

  4. Re:Too many close calls on Global Catastrophe, Even Human Extinction, Isn't All That Unlikely (theatlantic.com) · · Score: 1

    Yes a war that destroyed the industrial base would be too dark for too long. So, this would not help except in prepared refuges. I was thinking of an India-Pakistan war. For that, we could be in good shape.

  5. Re:60,000 excess cancer fatalities from Chernobyl on All Belgians To Be Given Iodine Pills In Case Of Nuclear Accident (phys.org) · · Score: 1

    So fossil fuel use is now safer?

  6. Re:Too many close calls on Global Catastrophe, Even Human Extinction, Isn't All That Unlikely (theatlantic.com) · · Score: 2, Interesting

    Actually, crops need warmth that the current solar insolation provides in season. It is nuclear winter's cooling that harms crops the most. You can still grow house plant with winter light, you just can't take them outside. It is interesting that my plan to restore buffalo habitat would buffer us from the effects of nuclear winter. https://slashdot.org/journal/2... This is because solar power still works in the winter so making food by direct chemical synthesis would not be hindered.

  7. Re:Hydropower reservoirs on Flexible Floating Football-Field Sized Solar Panels (digitaltrends.com) · · Score: 1

    Oh, OK, I'd already linked to the largest so far elsewhere. The other stuff still puzzles me.

  8. May the Sun Never Set on Engineers Plan The Most Expensive Object Ever Built (bbc.com) · · Score: 1

    On British indebtedness.

  9. Re:Hydropower reservoirs on Flexible Floating Football-Field Sized Solar Panels (digitaltrends.com) · · Score: 1

    Not getting your point....

  10. fast ocean freight on Flexible Floating Football-Field Sized Solar Panels (digitaltrends.com) · · Score: 1

    A chain off these recharging flow battery electrolyte could power a container based fast automated ocean freight system. Might allow Amazon to source more from direct overseas suppliers.

  11. Ocean going solar on Flexible Floating Football-Field Sized Solar Panels (digitaltrends.com) · · Score: 1

    You are right that sheltered waters have been sought. This rig sounds as though it is more seaworthy though. In the doldrums, a Swiss company was developing a solar island that had a single open floatation chamber. This effort seems to anticipate temperate waters with more storms.

  12. Re:Hydropower reservoirs on Flexible Floating Football-Field Sized Solar Panels (digitaltrends.com) · · Score: 3, Informative

    That is happening. Another advantage is that evaporation is reduced, conserving water.

  13. Phelps effect on Flexible Floating Football-Field Sized Solar Panels (digitaltrends.com) · · Score: 1

    Because only Americans can win at the Olympics.

  14. Floating solar already common on Flexible Floating Football-Field Sized Solar Panels (digitaltrends.com) · · Score: 2

    Floating solar is already common. Here is a large example. http://spectrum.ieee.org/energ... Putting solar on reservoirs also helps to reduce evaporation and conserve water. The novelty here is the resilience to rough water using the modular open base float system. It is notable also that sea based solar could replace fossil oil for liquid fuel production since the Navy has already patented a way to turn seawater into fuel.

  15. Re:They do accumulate on All Belgians To Be Given Iodine Pills In Case Of Nuclear Accident (phys.org) · · Score: 1

    I was distinguishing between accumulate and concentrate. In some ways strontium would be harder to flush. You can remove the thyroid.

  16. Re:Very highly discriminatory on Bison To Become First National Mammal Of The US (washingtonpost.com) · · Score: 1

    I think that started in Pennsylvania. Maybe bole weevil?

  17. Oh, and Bob Marley on Bison To Become First National Mammal Of The US (washingtonpost.com) · · Score: 1
  18. Re:Why the fuck is this on Slashdot?! on Bison To Become First National Mammal Of The US (washingtonpost.com) · · Score: 1

    No, it is a big deal. https://slashdot.org/journal/2...

  19. Re:Why the fuck is this on Slashdot?! on Bison To Become First National Mammal Of The US (washingtonpost.com) · · Score: 1

    But it is, or I would not have submitted it. It promotes chemistry: https://slashdot.org/journal/2...

  20. Re:Give them back their habitat on Bison To Become First National Mammal Of The US (washingtonpost.com) · · Score: 1

    It can be any desert. Attacama, Sahara, or floating in the oceans.

  21. Re:Why the fuck is this on Slashdot?! on Bison To Become First National Mammal Of The US (washingtonpost.com) · · Score: 1

    Here's a better one. https://slashdot.org/journal/2...

  22. Better Home Through Chemistry on Bison To Become First National Mammal Of The US (washingtonpost.com) · · Score: 1

    Well, in part because I wrote a chemistry song about bringing the buffalo back. https://slashdot.org/journal/2...

  23. Re:This is really important! on Bison To Become First National Mammal Of The US (washingtonpost.com) · · Score: 1

    Used to be on the back of the nickle.

  24. Re:Very highly discriminatory on Bison To Become First National Mammal Of The US (washingtonpost.com) · · Score: 1

    I'm going to flip you the bird: Bald Eagle

  25. Re:How do they taste? on Bison To Become First National Mammal Of The US (washingtonpost.com) · · Score: 1

    They were killed for their hides, the meat was left to rot. The policy was in place to force Plains tribes onto reservations.