Follow Slashdot blog updates by subscribing to our blog RSS feed


Forgot your password?
Check out the new SourceForge HTML5 internet speed test! No Flash necessary and runs on all devices. ×

Comment Re: What's the big problem? (Score 1) 675

I know my parents' bank in the UK doesn't allow you (technically, I believe you still can, but it's discouraged) to use the numbers on the card to make online purchases. They provide an application that runs on your desktop, connected to the internet, that generates a unique credit card/CCV/expiry number for each session (I believe it technically has access to a not insignificant pool of numbers at the bank, so there is the possibility of re-use but only after a very large number of session requests has taken place), so even if the details are stolen (which is unlikely) or the merchant is malicious, the transactions can be isolated and reversed very easily.

Comment Re:Energy in? (Score 2) 158

So they have to procure an amine in the pure form,


mix it with purified water,

Right again

heat it to 125 to 165 oC (a lot of energy, also under pressure),

Partially Correct - there was no mention of it being under pressure.

bubble the air through it (requiring at least the same pressure as the solution so there wouldn't be backflow)

1.001 Atmosphere of pressure, yes.

then recover the product using distillation (energy intensive).

Correct. Though as the solution was originally at 125-165C, the methanol would most likely be in vapour form, so condensation would be a relatively simple matter.

It's good chemistry and interesting catalysis, but I don't see how it will be cost-effective.

My guess is it would be cheaper to let a tree reduce the CO2, chop it down, and make the wood alcohol from that.

Oh, of course. Though that is a process that requires considerably more time than this one, it seems.

Comment Re:Luck manipulation requires emulation (Score 2) 151

As I understand it, early consoles (NES, SNES, Genesis) were so simple they didn't HAVE an on-board OS. Everything was on the cart, and they relied on the fact that physical carts were next-to-impossible to duplicate for the average Joe. I do know that some of the more advanced systems, Sega CD and 32X, for example, did have an on-board ROM and "OS", mainly because they had to come up to a stable and working state before data was loaded from the media, whereas regular carts were literally wired directly into the memory space.

Slashdot Top Deals

Keep the number of passes in a compiler to a minimum. -- D. Gries