Follow Slashdot blog updates by subscribing to our blog RSS feed

 



Forgot your password?
typodupeerror

Comment How hard could it be to prevent a hydrogen fire? (Score 1) 1148

Inject some halon or something. Or use big fans to disperse the gas.

The first day of the accident, when they were running on batteries, they should have got another generator in there and hooked it up. It's a week later and they are just now doing that. Now they have to dig through rubble and endure massive doses of radiation.

Putting the electrical switching equipment below sea level in a tsunami prone area was pretty stupid, too.

There should be a regulation to have a backup generator 50 miles away that can be air dropped into the reactor site. There should be connections already in place for hooking it up.

Japan

Submission + - Is there a silver bullet for reactor meltdowns? 1

Aku Head writes: In the context of the Fukushima Daiichi nuclear disaster, what if you could cover the overheating nuclear fuel with liquid aluminum? Aluminum is a good conductor of heat so that you could spray the aluminum with sea water to avoid melting. Would this solve the problems of decay heat and hydrogen generation? What if you alloyed the aluminum with neutron poisons such as hafnium or cadmium? Any other suggestions of something that you could cover the nuclear plant with to mitigate the problem?
Japan

Journal Journal: Is there a silver bullet for reactor meltdowns? 1

In the context of the Fukushima Daiichi nuclear disaster, what if you could cover the overheating nuclear fuel with liquid aluminum? Aluminum is a good conductor of heat so that you could spray the surface with sea water to avoid melting. Would this solve the problems of decay heat and hydrogen generation? What if you alloyed the aluminum with neutron poisons such as hafnium or cadmium? Any other suggestions of something that you could cover the nuclear plant with to mitigate the problem?

Comment Isobutanol is less toxic than anitfreeze (Score 2) 320

LD50 for isobutanol is 2460 mg/kg.

The orally lethal dose in humans of pure ethylene glycol is approximately 1.4 mL/kg.

"Higher" alcohol usually means that it has more carbon atoms --- 4 in this case vs. 2 for ethanol.

I would say that isobutanol is a "better" alcohol for fueling cars than ethanol because it has a higher energy density, doesn't evaporate as much and doesn't suck water out of the air.

Security

Submission + - Time Warner Cable Modems Expose Users to Hacks (wired.com)

eldavojohn writes: "Wired is reporting on a simple hack putting some 65,000 customers at risk. The hack to gain administrative access to the cable modem/router combo is remarkably simple: '[David] Chen, founder of a software startup called Pip.io, said he was trying to help a friend change the settings on his cable modem and discovered that Time Warner had hidden administrative functions from its customers with Javascript code. By simply disabling Javascript in his browser, he was able to see those functions, which included a tool to dump the router's configuration file. That file, it turned out, included the administrative login and password in cleartext. Chen investigated and found the same login and password could access the admin panels for every router in the SMC8014 series on Time Warner's network — a grave vulnerability, given that the routers also expose their web interfaces to the public-facing internet.' If you use Time Warner's SMC8014 series cable modem/Wi-Fi router combo, watch for firmware to be released soon that they are reportedly in the process of testing."
It's funny.  Laugh.

Submission + - Elephants on acid tops list of wacky experiments (telegraph.co.uk)

whoever57 writes: The Telegraph discusses an article in this week's New Scientist magazine which features the newly-published book 'Elephants On Acid and Other Bizarre Experiments'. As well as the elephants (who were injected with a huge dose of LSD), the book includes other nightmarish tales such as those of a Soviet surgeon who created two-headed dogs, vomit-drinking doctors and dismembered turkeys.

Slashdot Top Deals

The moving cursor writes, and having written, blinks on.

Working...