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User: Abeydoun

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  1. Slightly off topic: Dyson Spheres on Simulation Predicts Clumps of Dark Matter Within Galaxies · · Score: 3, Interesting

    I've been curious... if there was an incredibly advanced civilization that was capable of building near perfect dyson spheres around large expanses of space absorbing essentially all the radiation of the stars within it, wouldn't that look like "dark matter"?

  2. Re:Why this is important to non-chemists on NASA's Mars News Is Not Life, But Perchlorate · · Score: 1

    Well if that's the case the "potential for life" rumor, while technically correct, was entirely misleading. They didn't mean potential for life to have existed/currently exists, but rather potential for it to eventually exist... after we terraform the crap out of the planet and move migrate there. All I gotta say is the guy who leaked the rumor... is a douche!

  3. Re:Remember what happened last time on Wikileaks Airs Scientology Black Ops · · Score: 5, Funny
    Maybe...

    My condolences to your family, good sir.

  4. You can't resist the market on Sony Says Eee PC Signals "Race To the Bottom" · · Score: 1
    Well that's how the market's supposed to work Sony... I think you have your roles all mixed up, the vendor is the one that should be catering to the customer.

    'If [Asus's Eee PC] starts to do well, we are all in trouble.'
    In case you haven't realized, the Eee PC has been "doing well", they sold 300K units in 2007 and expect to sell several million in 2008. Even HP allegedly agrees http://www.engadget.com/2008/02/26/hp-so-confident-in-the-umpc-2133-its-building-2m-units/
  5. Re:Warring immune systems? on Teen Takes On Donor's Immune System · · Score: 1

    This could be a very similar mechanism. The liver is also capable of hematopoiesis (blood cell formation) just like bone marrow. In the fetus, the liver has the main role of hematopoiesis and eventually the role is switched almost exclusively to bone marrow. The interesting thing is that in some people who have decreased production of blood cells for any reason (could be the CMV infection + immune suppression drugs the patient was given), the liver is capable of compensating by regaining some hematopoetic activity.

  6. Re:What could happen on Pentagon Working on "Human Fear" Weapons · · Score: 1

    Frankly I find it intriguing. How can an asshole have an asscrack?

  7. Re:Expensive on Apple Announces MacBook Air · · Score: 5, Insightful
    Not to mention a replaceable battery.

    I have a Toshiba Portege R500. It's 2.4lbs, .77" thick, includes an optical drive, and has a replaceable battery (usually runs me a full 6hrs on one charge with average usage). Granted it's not as powerful as the mac (it has a 1.2ghz Core 2 Duo) doesn't have all the cute features of the mac (my favorite is the backlit keyboard), but it's lighter and has some essential practical benefits over the mac. IMHO I don't fully understand the hype that's behind the Air. It's not nearly as revolutionary as people are suggesting.

  8. Re:Corporate Image on CES 2008 Hall of Shame · · Score: 1
    Here's their description of the "SOLAR MEDIA CHIPS FOR SPACE APPLICATIONS"

    The Solar Chip is a Quantum-Optical non-volatile RAM, which uses electricity from a special Solar battery to record and read information. The electricity output, which the Memory chip uses from a Solar battery, is very small. For instance, exposing the Solar battery to sunlight for five minutes allows the chip to work for twenty-four hours. Signals for recording and reading of information are send to the chip by a laser beam and can control the chip from a very big distance. The Solar chip is intended for memorization of an image, which is projected directly onto the chip surface at a distance of up to four inches or through an independent optical system at large distances. The information can be read using digital electric signals from pinouts or directly from the chip surface. The Solar Chip has four designs: 4GB; 8GB; 16GB and 32GB. The selling price for a Solar Chip is $60 per 1GB.

    Now IANAEE (electrical engineer) but that sounds pretty useless. A memory chip with it's own solar array, battery, laser based communication unit, and (crappy) imaging sensor? Are they planning on just putting a bunch of these in orbit as singular chip satellites? If someone has an idea how such a thing can be even remotely useful please correct me cause right now -- the entire unprofessionalness of their booth/website aside -- this looks like fud.

  9. Re:Out of curiousity... on What is the Future of Wireless Power? · · Score: 4, Interesting
    Here's the Wiki I found on general wireless energy transmission.

    From the wiki article

    "WiPower [1] technology is a very recent example of inductive charging technology. The charging pad allow users to charge multiple electronic devices that are placed on its surface. It is insensitive to the position or orientation of the devices under charge. Unlike most inductive charging systems, the WiPower system uses air-core technology which allows the system to be integrated into very small electronic devices. The efficiency of the system actually exceeds many corded chargers which have a median efficiency of 57%."

  10. Re:Who is moderating today? on Scientists Restore Walking After Spinal Cord Injury · · Score: 1

    The GP is pointing out the hypocrisy of many people who label themselves as pro-lifers. "Pro-life" yet pro-death penalty.

  11. Re:that's some interesting math right there... on Comcast Promising Ultra-Fast Internet · · Score: 1

    In support of the parent post, here's a side-by-side comparison I found of DVD-MPEG2 vs. H.264 (MPEG AVC aka MPEG-4 part 10) using the same bit rate. As you can imagine a 4.5GB H.264 encoded file can be pretty close to 'true' HD.

  12. Re:Care to cite that? on Airport Profilers Learn to Read Facial Expressions · · Score: 1

    I agree with the parent. Maybe they're doing this on a smaller scale (ie. when bags are being specifically searched) but I find it unlikely they're capable of doing this to everyone through standard 'security screens'. From what I've gathered by simple observation, at security check in the guys that check your boarding pass rarely intermingle with xray techs, aside from the occasional coworker gossip. This is based on my excessive traveling experiences between DC and California as an arab with a very scary sounding Muslim name (no it's not Muhammad, Ousama, nor Ahmad).

  13. Re:The Ring's Surfaces Are Younger on Saturn's Rings Are Ancient · · Score: 1
    For some reason I always get fascinated when we discover equilibrium events occurring in the vastness of space. It gives the chaotic universe a strangely comforting sense of order.

    Question to the physicists and theoretical mathematicians amongst you, would this fall into the realm of chaos theory?

  14. Re:Bringing back the dead? on The Role of Retroviruses in Human Evolution · · Score: 1

    Well, if we take Comment 21626987 into account, I guess we can just classify these viruses as undead.

  15. Re:Or... on Helium Leads to Geothermal Energy Resources · · Score: 2, Informative
    From the PopSci article itself. http://www.popsci.com/popsci/flat/bown/2007/green/item_59.html

    "CEO Martin Roscheisen claims that once full production starts early next year [2008], it will create 430 megawatts' worth of solar cells a year--more than the combined total of every other solar plant in the U.S. The first 100,000 cells will be shipped to Europe, where a consortium will be building a 1.4-megawatt power plant next year."

    I didn't read anything about them not wanting/being able to sell to the American market, it's just that their first order was placed by a European company. Unfortunately I didn't really further research this since I have a Histology exam in 2hrs and I should probably make my way over to campus.

  16. Re:clever wording on Bill to Require Open Access to Scientific Papers · · Score: 2, Interesting
    Maybe I should have been more clear. As stated in the article, some of the journal publishing companies are non-profit in the sense that the profit which they gather from selling subscriptions of their journals is redistributed towards grants to other research projects. In fact these journals provide for a significant source of grants for projects which are not qualified for federal funding. So by harming the business model of these journals, this bill could essentially clamp down on said research giving government even more control over who can do what research.

    Hope that makes more sense...

  17. Re:Color vision... on Monkeys and Cognitive Dissonance · · Score: 2, Informative

    Very good point. I actually did some Googling to check this out and I found this abstract http://jp.physoc.org/cgi/content/abstract/528/3/573. What I got out of this is that apparently the genus of monkeys they used (Cebus, which are "New world" monkeys) are known to be highly varied in trichromacy (most females) vs dichromacy (all males(?)) among sexes. So I guess the easiest way for them to not have to worry about that is by using all male monkeys... but then again, as someone with a very incomplete knowledge of vision physiology and neuroprocessing, I'm not sure how those dichromatic monkeys would perceive the third color.

  18. Re:clever wording on Bill to Require Open Access to Scientific Papers · · Score: 1
    My only issue with this is that it essentially takes away a key source of income most researchers who don't receive funding through federal grants have access to. Under ideal conditions where the fed is non-politically biased and purely scientifically subjective, this is a non-issue. But in a world where the religious ideals of those in power can be directly intertwined with scientific grant distribution (as is the case with stem-cell research), this will likely clamp down on one of the main sources of funding for governmentally deemed morally controversial research subjects.

    That being said, I often do get frustrated during the many times when I'm researching topics while not on campus grounds where I have easy access to most scientific journals. I should probably just set up a vpn for such occasions.

  19. Re:Artificial Kidney? on New Plastic to Cut CO2 Emissions and Purify Water · · Score: 2, Interesting
    IICAMS (I am currently a medical student) Unless it has some other interesting characteristic not mentioned, the only potential use I see in dialysis/an artificial kidney would be to increase serum pH. But in someone with renal problems and is likely to be fairly physically inactive, the lungs already do a fairly decent job at regulating high pH by C02 removal. Nonetheless, the lungs' ability to regulate pH is more of a redundancy/tweaking technique to make the system more robust and as such they don't do as good of as job as the kidneys.

    For those interested, in the physiology of it, red blood cells carry an enzyme (carbonate anhydrase) that helps establish the equilibrium of

    H+ + HCO2- <---> H2CO3 <---carb anhydrase---> H20 + CO2

    So by Le Chatelier's principle, if you can actively tweak the concentration pH by actively removing CO2 from the system, driving the equilibrium to the right and decreasing the amount of H2CO3 (and as a result H+) increasing the overall serum pH up.

  20. Re:Nice curiosity, but what are the applications? on Fish Poison Makes Hot Feel Cold and Vice Versa · · Score: 2, Informative

    urgh... meant to say menthol, not methanol. Bah, guess that's what happens when you skip a night of sleep.

  21. Re:Nice curiosity, but what are the applications? on Fish Poison Makes Hot Feel Cold and Vice Versa · · Score: 3, Informative

    As a matter of fact, that's what methanol does. One of it's characteristics is to selectively stimulate the cool-feeling receptors of your skin while leaving practically everything else alone. And on the other hand, there's capsasin, everyone's favorite ingredient in salsa.

  22. Re:Just curious on China To Deploy World's Largest People Tracking Network · · Score: 1

    The tracking of American citizens via RFIDs is already a reality in the US. Infact, after moving to DC, I have found that they have a nifty little Metro-transit Card they call the "smartip" card. You just pump it up with a bit of dough and just wave it around on terminals to take the Subway or the various buses around. Of course you can use cash if you like, but the convenience of not needing to carry money coupled with the seconds of time saved makes it very tempting to have one. You can either purchase one online and they'll mail it to you (and have it registered under your name automatically) or you can buy one in the commuting store for cash and be at least slightly anonymous, that is until you make the mistake of adding money onto it via Credit Card or unless you register it (the convenience of that is that they will refund your money if you lose the card so long as it's registered). All of this is done using the very non-controversial and citizen funded Washington Metropolitan Area Transit Authority, aka WMATA

    In the US, they learned that they don't need to force you via laws to take your rights away, not at first anyways... they just use convenience and fear as the main motivation factor and low-and-behold the vast majority of citizens will gladly surrender any of their rights. Then, after they've suckered in the majority, they just pass laws democratically by utilizing their new found minions and as such, there goes the rights of every other poor sap.

  23. Re:Opera! on Firefox Going the Big and Bloated IE Way? · · Score: 1

    I dunno about you guys, but blindly following FOSS tends to get me fossed, forcing me to fire up my subscription version of Google Maps on my windows mobile device. Incidentally, the last time I got fossed, the path back home to California was very wet

  24. Re:HAHA on Fake E-Mail Results in Angry Apple Shareholders · · Score: 1

    The nature of a "good" investor to react to news the fastest. In most cases, especially when it comes to short-term earnings, the mob mentality is the wave you want to ride, incidentally the mob mentality is a result of everyone trying to ride the wave that they caused and are a part of. Seeing how that's the case, it doesn't surprise me one bit how this scenario happened.

    Of course the smart investor was sitting in the corner buying off the stocks that the doubters were selling, making him an easy 2% premium. Makes me wonder if it could have been intentional with the perpetrators hoping to make a few bucks off of rumors.

  25. Re:idle & load power ratings are scary on AMD's Radeon HD 2900 XT Reviewed · · Score: 1

    I'm guessing it has more to do with consistency of current rather than actual power. The Full load rating is an average, but it still doesn't make sense to need >200 extra Watts for peaking. It may be like bad_fx implied and they were using a crappy over-rated 700W PSU (though for a benchmarking site, I would hope that's not the case).