Slashdot Mirror


User: jaadu

jaadu's activity in the archive.

Stories
0
Comments
6
First seen
Last seen
Profile
(view on slashdot.org)

Comments · 6

  1. Re:No way to tell? on "Anonymous" Hacks Palin's Private Email · · Score: 2, Informative

    Torrent available from the Pirate Bay:

    http://thepiratebay.org/torrent/4401363/Sarah_Palin_Email_Leaks

    Enjoy...

  2. no info on website on New Honda Accord Drives Itself · · Score: 1

    At least on the us website [www.honda.com] and the automotive website, searches for "ADAS" and "driver assist" don't turn up anything. Surprising, considering how well Honda is rebranding itself as a purveyor of cool technology (like the hybrids) in its cars.

    It would have been nice if the article mentioned which models this system will be available on. Is this only for luxury cars? Will it make it into family vehicles like minivans? There seem to be some obvious problems with something like this: fading line markers and precipitation/condensation on the camera come to mind immediately. Is this thing being mass-marketed already?

  3. Logitech Pen on What Kind of Tablet PC to Buy? · · Score: 1

    I'm a college student too, and the main attraction of tablet PC's is the ability to take class notes in a form that's compact, easily searchable, and easy (and cheap) to share. If you're like me, you might want to check out the Logitech io Digital Pen. I haven't seen it in action, but it seems perfect: take notes on a normal pad while the pen stores everything you write so you can archive it and search for information later. It's also much cheaper than the price difference between a laptop and a tablet - only $175 or so.

  4. Inefficiency on Ethanol to Hydrogen Reactor Developed · · Score: 4, Insightful

    That can't work (at least not as a closed system)...you can't run the corn production and ethanol distillation process on the ethanol produced and expect to have an energy surplus (or even break even) unless the operation is so large, and so efficient, that the energy input from sunlight is larger than the loss through various inefficiencies. This converter was a breakthrough, and it still only reaches 60% conversion efficiency, so it doesn't sound like things are going to be that efficient anytime soon.

  5. Re:Making ethanol uses fossil fuels on Ethanol to Hydrogen Reactor Developed · · Score: 2, Insightful

    "Ethanol is not an energy source; it is a different way to store energy, and not a particularly efficient one."

    I'm not claiming that ethanol production is a wonder of modern science, but your argument is equally applicable to everything other than direct use of sunlight or geothermal energy, isn't it? As far as I know, wood, fossil fuels, and ethanol are all formed by processes that start with sunlight and proceed through a series of relatively inefficient reactions to store it in a usable form.

    Science is a stepwise process; while this ethanol->hydrogen converter isn't a silver bullet for our energy problems, it's clearly a step in the right direction. Maybe the next step is to make the ethanol production process more efficient or to adapt the converter to work with methanol. The whole point is to make advances that, while they may not solve the whole problem at once, lay the groundwork for an eventual solution.

  6. Mountain Blend on Which Instant Coffee? · · Score: 1

    I'm with all the coffee fiends who recommend french presses, espresso machines, and cold brewing...but when you don't have a deep sink to wash things in, the luxury of being allowed a hissing appliance on your desk, or the money to order gourmet caffeine online, it's hard to argue with cheap instant coffee. Plus you get bonus points for not being a snob.

    I like Nescafe Mountain Blend; it tastes vaguely like real New Orleans coffee (with chicory), and is completely painless to make.