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  1. Re:fuel rods are explosive on US Alarmed Over Japan's Nuclear Crisis · · Score: 1

    lets just say that there is some contention about the explosiveness of zirconium. An older article (http://www.sciencemag.org/content/148/3677/1594.abstract) suggests that it can be explosive (what about flaring, does that count)? Given that there are high concentrations of Hydrogen, the point may be moot!

  2. Re:fuel rods are explosive on US Alarmed Over Japan's Nuclear Crisis · · Score: 0

    Gee--I learned something--burning is not the same as exploding. DOH! BUT, get this, zirconium was used in making flash bulbs. If you do your research instead of responding so glibly, you will find that the compound is explosive. See for example: http://techyum.com/2011/03/does-zirconium-explode-at-2000-degrees/.

  3. fuel rods are explosive on US Alarmed Over Japan's Nuclear Crisis · · Score: 1

    The fuel rods in these reactors are made from a zirconium compound. This compound is explosive above 2000 deg. There are tons of this stuff to go boom spreading the radionuclides from the tons of the spent fuel, into the atmosphere. Is this shades of "On The Beach"? But, not to worry, the government says we are safe just like they said the environment around the WTC was safe.

  4. understanding the brain on Ray Kurzweil Does Not Understand the Brain · · Score: 1

    "If the brain were simple enough to be understood, it would be too simple to understand itself"--anonymous

    If all of our folly were turned to intelligence and divided amongst a thousand toads, each would be more intelligent than Aristotle

  5. re syncing... on NIF Aims For the Ultimate Green Energy Source · · Score: 1

    Just a reminder, femtoseconds may be common/easy today, but what we did was done 12 years ago as a prototype an proof of concept. I'm not talking about femtosecond lasers either. This project was to synchronize multiple devices over varying distances from each other and from a source, not to generate ultra short pulses.

  6. synchronizing nearly 200 lasers on NIF Aims For the Ultimate Green Energy Source · · Score: 3, Interesting

    Has anyone wondered how to synchronize these lasers to less than a microsecond? Sure one could measure the path lengths and calculate the delays at approx 9 ns per foot. However, about 12 years ago I wrote the software for a system that sync'd a remote quartz clock to a local cesium clock to within a nanosecond over 10 -100 km of fiber. Changes in path length we automatically compensated. It was fun to write this code and put the system together. A prototype was delivered to the Lawrence Livermore Lab for just this purpose.

  7. Re:US of A on California Student Arrested For Console Hacking · · Score: 1

    According to a past Supremes interpretation of the 14th amendment, corporations are people.

  8. synchronization issue on National Ignition Facility Fires 192-Beam Pulse · · Score: 1

    The big problem here is to synchronize all those lasers. About 10 years ago I developed all the software for synchronizing a remote quartz clock to a local cesium clock to within 1 nanosecond over 10 - 100 km of fiber optic. One of the initial units went to this facility for the purposes of synchronization. This system was independent of temperature and changing path lengths. It was pretty cool.

  9. interesting protein on Fluorescent Protein Research Lands Scientists Nobel Prize · · Score: 1

    Some 36 years ago, in another life as a physiologist, I used this protein, also known as Aquorin as an means to monitor the rise and fall of the intracellular calcium ion concentrations in invertebrate muscle. Aquorin fluoresces in the presence of very low levels of calcium ions and was used as one of the means to show that these ions were responsible for triggering muscle contraction. However, the experiments were very difficult to do, Aquorin was very expensive and the success rate of the experiments was not very high.

  10. Re:Researches on /. find article similar to this on Astronomers Locate Solar System Very Similar To Our Own · · Score: 1

    this dupe is brought to you by the department of redundancy department.

  11. big brother protector on In Soviet US, Comcast Watches YOU · · Score: 1

    This will fix 'em: http://zapatopi.net/afdb/

  12. Eureka moments can be physical as well as mental on 'Innovation In a Flash' Is a Myth · · Score: 1

    About 30 years ago, when I had another life as a medical school professor and NIH researcher, I had reached a point in my research that was seemingly a dead end. I tried experiment after experiment attempted to resolve the impasse with no success. This went on for months and I would wake up obsessing in the middle of the night. I was at my wits end with this project and was thinking that I would have to return the balance of my grant back to NIH.

    One day as I was finishing cleaning glassware in my lab, I was walking through my lab when I had an experience that could be called a Eureka experience. What I remember about it most was that it shook me physically and stopped me cold in my tracks. It had kind of felt like a bolt of lightning had hit me and in a flash, I suddenly saw a way through the impasse. It took me a couple of days to work out the details, but a whole new avenue of research opened up in that split second. It was quite remarkable.

  13. Re:It's called DVB-C, but it's NIH. on Cable Industry to Standardize Under Tru2Way · · Score: 1

    Your comments are not completely accurate. DVB does indeed have the specifications you cite and are standardized by ETSI. However, there are big differences between Europe and North American systems. Cable is the dominant technology in North America while Satellite is the major technology in Europe. North American cable provides an always on return path for 2-way communications between the cable receiver and the headend (for things like Conditional Access, Network Authorization, Viewer Interactivity, etc) while Europe has used a session based return path via the phone line. This makes for huge differences in how the specifications can be implemented. OpenCable (now Tru2Way) through the DVB based GEM specifications, which is a subset of the DVB MHP specification, has extended the DVB subset to enable the use of the North American Technologies. It only recently that the DVB has included things like unbound applications that are not tied to a service (or TV program). This means that the application can run regardless of the program to which the device is tuned. Enabling this required the use of the specific technologies that the North American Cable network provided via the OpenCable initiative. Thus, the only way to make the DVB specifications work would have be to redo the technologies in North America. That the DVB specs were not invented here is patently a bad argument, since a high percentage of the APIs used in the the OCAP specifications are in the DVB name space.

  14. Re:The hell? on The Transistor's 60th Birthday · · Score: 1

    This attribution to Shockely probably came from his less than diligent interest in inheritance and race, with an insistance that blacks were inferior. This was based on his confusion of the genetic term 'heritance" with inheritance:. See for example, Shockley on Eugenics and Race: The Application of Science to the Solution of Human Problems (Paperback) by William Shockley (Author), Arthur R. Jensen (Foreword), Roger Pearson (Editor).

    On another note, the mathematics he developed for the P-N junction also apply to biological membanes.

  15. brute force solution on New Seagate Drives Have Real Difficulties With Linux · · Score: 1

    I found that in a perl script I use for backing up my HD's on the seagate drive, putting 3 mount commands in the script in sucession woke up the drive.

  16. wisp coops are the way to go on Why Municipal Wi-Fi Networks have Been Such a Flop · · Score: 4, Informative

    Some neighbors and I started a wireless coop about 5-6 years ago in the mountains west of Boulder CO (http://www.mric.coop). We have about 500 subscribers at $50/month and cover an area of several hundred square miles. While there are some commercial WISPs in the area, it is difficult to see how they have a viable business plan. We have a very limited number of paid employees and most of the work is done by volunteers. The mountainous terrain with lots of trees makes it impossible to have 100% coverage. Additionally, we are finding out that 802.11b, while a good way to get started, relatively cheaply, has severe limitations, causing poor performance for a number of subscribers. We are considering changing at least part of our infrastructure to Motorola Canopy gear. In order to get coverage, we have several T-1 lines at different locations interconnected to each other and other APs by a wireless backhaul. Of course the problem with 802.11b is that while there are 11 channels (in the US) to use, only 3 are non-overlapping. Even using vertical and horizontal polarities for distribution, interference is still a big problem. So far we have been able to work out cooperation agreements with the commercial wisps so that we don't interfere with each other, since such activity would have nasty consequences for everyone. We were able to pay off our initial investment of $30-40K, in about 3 years and are debt free with a positive cash flow.

  17. now we can have valid elections? on A Flawed US Election Reform Bill · · Score: 1

    All we need now are valid candidates worth voting for.

  18. Re:Cant we just eat corn as it was created by natu on Genetically Modified Maize Is Toxic — Greenpeace · · Score: 1

    There is a fallacy to this argument. No amount of selective breeding will confer a peanut gene or BT gene onto corn or soybeans etc. genes!

    Disclaimer: I have gotten peanuts on my levi jeans.

  19. whats wrong with this picture? on U.S. To Certify Labs For Testing E-Voting Machines · · Score: 3, Insightful

    Why is this just happening now after several years of use (and possible misuse)? Note to readers: this is a rhetorical question. I work for the cable industry which spends lots of money and time for years, certifying devices that get attached to the cable networks. I guess this is more important that ensuring the veracity of our voting systems. But this begs the question. The voting machines are only one link in the chain and perhaps not even the weakest link. Previous elections have quite possibly been affected by selective voter purges and mishandling of ballots--do provisional and absentee ballots even get counted? So, certification of the devices is a needed measure as is holding in escrow the source code of the devices. But this is not the only measure that should be taken.

    "If god had wanted us to vote, he would have given us candidates"

  20. Re:Let's ignore the elephant in the closet, shall on MIT Leads in Revolutionary Science, Harvard Declines · · Score: 1

    Definition of IQ: Something an IQ test measures!

  21. what exactly is meant by peak oil on Report Blasts "Peak Oil" Theory · · Score: 2, Insightful

    There are perhaps a couple of things to consider about peak oil that may not have been considered. One is that at any given price point, there will be a peak in oil availability. As the price of oil goes up, the oil that is more expensive to obtain becomes more economical, such as oil from oil shale or heavy crude. However, that oil is much more difficult to produce and the production of that oil is probably not at the same rate as for the lighter crude that is easier to produce. Thus the peak for oil production is different than the peak for oil availability. One may peak while the other may not. The market factors may inhibit the production of the more expensive oil because fewer people may be willing to pay for it. In addition, other forms of energy will become more economical for R&D as the price of oil rises which may also inhibit the production of that oil. There are also other factors such as a producer wilfully withholding production to keep the price up. What is very interesting to me here is that with the high price point of oil, Venezuela's reserves of heavy crude is probably the largest in the world making them the de facto leaders of OPEC, something tp which the Saudi's and the US are rather resistant.

  22. theft of gem source code on Ask a "Star" of HBO's Voting Machine Documentary · · Score: 1

    Has Diebold attempted to prosecute you or Bev Harris for what they call theft of the source soft and software?

  23. understanding the brain on Scientists Identify Brain's Concept Control Core · · Score: 3, Funny

    If the brain were simple enough to be understood, it would be too simple to understand itself.

  24. Re:Remember Iran: on Labs Compete to Build New Nuclear Bomb · · Score: 1

    It was 1952 when the democratically elected (yes Virginia there was democracy in the middle east before GWB) prime minister of Iran, Mohammad Mossadegh, was overthrown by a CIA led/inspired action, bringing back the Shah. This event led to the revolution in 1979 and perhaps helped to create the muslim extremists of today. The partitioning of Palestine also very probably helped here as well. So we act to removed that which we are afraid of will develop and guess what happens? That which we are afraid of happens. DOH!

  25. The Red Shift on No Time Travel, Sorry · · Score: 1

    It must be from these arguments that the so-called "Red Shift" observed by astronomers is a pigment of their imagination.