Catch up on stories from the past week (and beyond) at the Slashdot story archive


Forgot your password?
DEAL: For $25 - Add A Second Phone Number To Your Smartphone for life! Use promo code SLASHDOT25. Also, Slashdot's Facebook page has a chat bot now. Message it for stories and more. Check out the new SourceForge HTML5 Internet speed test! ×

Comment Re:Thorium reactors? (Score 1) 226

The U232 makes it deadly to handle therefore extremely difficult and unlikely to use for machining into something usable as a weapon. I'd never say someone couldn't but there are likely easier ways of getting U. Anyway, If you have a LFTR reactor, you already have a bunch of U in the core. The U232 is bred in the blanket later of a LFTR reactor, filtered out through fluorination and pumped back into the core for fuel.

A Th reactor can cook above delayed critical (obviously, otherwise how does it power up?

A LFTR starts with a core of U (I believe it is U235) in the Berylium Fluoride - That is what powers it. The Thorium (in the blanket layer) is only there to breed more U (U232), slow neutrons, carry away heat. LFTR's are still reactors powered by U, the cool thing is 1. breeding more U, 2. operates at atmospheric pressures, 3. uses Berylium Fluoride for cooling & heat transfer and therefore does not need water, 4. They don't need massive containment vessels for steam so they are also much smaller. No water means no pressure build up (steam) and no hydrogen being split from H2O (big boom & fire).

Somewhere in the decay chain, Pu can/is created but in very minute quantities, not enough for weaponization and I believe it gets consumed as well in the long run. I haven't read up on LFTR for a while so I forget where the Pu goes. I read/saw somewhere the amount that was generated and my feeble memory wants to believe it was a few milligrams per year in an ocean of molten Beryllium Fluoride.


Submission + - Dell begins their largest layoff ever. 3

cyphercell writes: Dell has begun their largest series of layoffs ever. This morning at about 10:00am more than two hundred employees at Dell's Roseburg Oregon Call center found out that they no longer had jobs. Sparking what appears to be the beginning of year long run of layoffs for the company. 0802014

Refuting local suspicions of malice Dell spokesman David Frink states:

... the closure has nothing to do with a lawsuit filed by employees of the Roseburg center in February, claiming Dell violated federal and state wage and hour laws. 0213020

and later says

...plans to reduce employment worldwide by 10 percent at the end of May.

Their plans to reduce employment can be found here: /stories/technology/06/01/1dell.html

Here are some highlights:

Dell set to shed 8,800 workers...

Dell has 82,200 permanent workers, including 18,000 in Central Texas, and 5,300 temporary workers worldwide. The layoffs are expected to affect both groups...

In its last large-scale layoffs, Dell cut more than 5,000 jobs in Austin after the high-tech bust in 2001.

...many of the layoffs could come in Central Texas, where Dell is headquartered. In a March 29 report to clients, Goldman Sachs analysts said Dell might reduce the work force at its test and assembly facilities in the U.S. and Malaysia.

Slashdot Top Deals

Riches cover a multitude of woes. -- Menander