1. Energy requirements - Regrowing an entire appendage is not cheap and warm blooded mammals already have high basic energy requirements compared to the cold blooded creatures where regeneration does take place. Being able to regrow an arm doesn't help much if it increases your energy requirements so much that it results in you starving to death in the meantime.
2. Basic survival rate - Prior to modern medicine (antibiotics in particular, which were only discovered about 80 years ago, which is practically yesterday in evolutionary scales), the odds of surviving an injury that resulted in the loss of a limb was very low. Not much point in being able to regrow a limb if you'll die from infection before that. Just closing up the hole with scar tissue is a lot faster (especially with far more common more minor injuries), leaving that much less time for infection to set in.
If you're getting 60Hz (or 120Hz) noise (or flickering at said frequencies) out of a CFL, pitch it. It's a piece of junk using an cheap old style magnetic ballast. Modern fluorescents (both CFL and long tubes) use electronic ballasts and run at 20-40KHz.
The flickering is a case of old magnetic ballasts vs. modern electronic ballasts. Magnetic ballasts do flicker at either 60hz or 120hz, which definitely can be noticed, whereas electronic ballasts "flicker" at 20-40KHz. I've seen a few cheap crap CFLs that use magnetic ballasts.
I can think of a couple reasons why this feature may have been dropped. nutrition (regrowing something is a hell of a lot more resource intensive than just closing the hole) and infection prevention (just closing the hole is a lot faster than regrowing something, so less chance of it getting infected). Both of these were relevant considerations very recently and evolution is pretty slow.
I somewhat doubt it. As big as it is over here, Google is merely an also-ran in the Chinese search engine market, which is dominated by local companies, largest being Baidu reportedly holding 60%+ of the market by itself.
Figures I've see thrown around put the revenue for Google's Chinese operations at about $300 million/year, which is slightly more than 1% of Google's total revenue. Given the amount of hassle they've been having, I'm sure they've been strongly questioning whether that money is worth it.
Just because you can see it doesn't mean you can reasonably differentiate it from the surrounding normal cells. This discovery takes care of that for you.
Non-OSSness is the least of flash's issues. Security issues and pathetic support on Linux (especially 64-bit systems) rank higher on my list of reasons why flash should die in a fire.
It was approved for use in men last month up here in Canada, but it's not on the standard schedule for men yet, so you need to specifically ask for it.
Umm.. they will be immunized and will therefore not be part of the epidemic?
You assume everyone can get vaccinated, that vaccines are 100% effective, that they do not wear off over time, and that the virus is an unchanging constant that will not mutate around the vaccine.
Ridiculous tax rules tying employment and health insurance together? What idiot thought that was a good idea?
A nice case of "It was a good idea at the time", namely during WW2 when wages were fixed (keeping inflation stable), resulting in companies competing for employees working around that by offering extra money in the form of things like health coverage and pensions, which didn't legally count as wages. Follow up with a "don't rock the boat" mentality and other factors occurring in the background (a positive feedback loop in medical costs, for example), and you end up with today.
I don't know how they justify a price anywhere near USD$3000, even the USD$1000 insurance "agreement" price seems excessive.
IMO, it's mostly the end result of a positive feedback loop.
Of the X people who get a procedure, Y of them cannot/do not pay for it (500,000+ medical-related bankruptcies per year is an oft quoted estimate) and the hospital writes it off. To compensate for that loss and maintain profitability, the price of the procedure (and/or other procedures/consumables/etc.) is increased, resulting in Y increasing.
Keep this running for a few decades and add in other factors such as litigation, masking of costs, inappropriate money distribution, and more, and you find the current situation.
In countries where people are starving there is not enough food being produced. THat is the problem (drought, wars, you name it).
Other possible reason : price of food crops is too low (inexpensive food is desirable for society in general) to make a living off of with a reasonable amount of land, so they grow non-food cash crops instead, often for export.
Food being imported for free/cheap lowers price further and results in a feedback loop of the above.
Typical solution to this issue is to decouple the crop sale price from the food purchase price via subsidies, but this doesn't work if the government of the country in question doesn't have things together enough to implement that or isn't interested in doing so for whatever reason.
A theoretical all-terms solution to this problem is fairly easy to come up with, but successfully implementing one is decidedly non-trivial or potentially impossible depending on various factors.
Yes, you're going to lose a bunch in the conversion, but neither batteries nor capacitors can currently come close to competing with liquid hydrocarbons for energy density, by mass or by volume, even after accounting for the inefficiency of engines, so it then becomes worthwhile, as it's easy to move around.
Compare
Li-ion batteries - 0.4-0.7MJ/KG or 0.8-0.9MJ/L
EEStor ultracapacitor prototype - 1.2MJ/KG or 5.7MJ/L
I'm pretty sure the fast reacting is a matter of scale. A subs reactor is tiny compared to civilian reactors. A Virginia class submarine has a 30MW reactor, an Ohio class sub has a 45MW reactor, the biggest reactors the navy has are the pair of 200MW reactors Nimitz class supercarriers have. On the civilian side, the South Texas Nuclear Generating Station has a pair of 1.25GW reactors. The Bruce Nuclear Generating Station in Ontario has 8 reactors and can put out 6.2GW, and the world's largest, the Kashiwazaki-Kariwa Nuclear Power Plant in Japan, has 7 reactors and outputs 8.2GW.
Slashdot Mirror
1. Energy requirements - Regrowing an entire appendage is not cheap and warm blooded mammals already have high basic energy requirements compared to the cold blooded creatures where regeneration does take place. Being able to regrow an arm doesn't help much if it increases your energy requirements so much that it results in you starving to death in the meantime.
2. Basic survival rate - Prior to modern medicine (antibiotics in particular, which were only discovered about 80 years ago, which is practically yesterday in evolutionary scales), the odds of surviving an injury that resulted in the loss of a limb was very low. Not much point in being able to regrow a limb if you'll die from infection before that. Just closing up the hole with scar tissue is a lot faster (especially with far more common more minor injuries), leaving that much less time for infection to set in.
Or for people who own cars from GM. Onstar has this same kind of functionality.
I think the point may have been pointing out the "Violent zombie movies? Sure! Violent zombie Games? Banned!" silliness.
If you're getting 60Hz (or 120Hz) noise (or flickering at said frequencies) out of a CFL, pitch it. It's a piece of junk using an cheap old style magnetic ballast. Modern fluorescents (both CFL and long tubes) use electronic ballasts and run at 20-40KHz.
The flickering is a case of old magnetic ballasts vs. modern electronic ballasts. Magnetic ballasts do flicker at either 60hz or 120hz, which definitely can be noticed, whereas electronic ballasts "flicker" at 20-40KHz. I've seen a few cheap crap CFLs that use magnetic ballasts.
NASCAR has a treadmill that will do 180MPH.
http://www.popularmechanics.com/automotive/motorsports/4249316.html
I can think of a couple reasons why this feature may have been dropped. nutrition (regrowing something is a hell of a lot more resource intensive than just closing the hole) and infection prevention (just closing the hole is a lot faster than regrowing something, so less chance of it getting infected). Both of these were relevant considerations very recently and evolution is pretty slow.
Peazip is another good one. One of it's neat features is it can use ZPAQ compression, which is handy when smallness is of great importance.
I somewhat doubt it. As big as it is over here, Google is merely an also-ran in the Chinese search engine market, which is dominated by local companies, largest being Baidu reportedly holding 60%+ of the market by itself.
Figures I've see thrown around put the revenue for Google's Chinese operations at about $300 million/year, which is slightly more than 1% of Google's total revenue. Given the amount of hassle they've been having, I'm sure they've been strongly questioning whether that money is worth it.
Just because you can see it doesn't mean you can reasonably differentiate it from the surrounding normal cells. This discovery takes care of that for you.
You might look into Shaw direct (formerly known as starchoice). They carry BBC and BBC Canada.
Non-OSSness is the least of flash's issues. Security issues and pathetic support on Linux (especially 64-bit systems) rank higher on my list of reasons why flash should die in a fire.
Cutting NASA with respect to the deficit is like putting a bandaid on your finger while ignoring the sucking wound in your chest.
Your info is a little out of date. It's been put on the 2010 edition of the standard immunization schedule for both genders.
It was approved for use in men last month up here in Canada, but it's not on the standard schedule for men yet, so you need to specifically ask for it.
Umm.. they will be immunized and will therefore not be part of the epidemic?
You assume everyone can get vaccinated, that vaccines are 100% effective, that they do not wear off over time, and that the virus is an unchanging constant that will not mutate around the vaccine.
Now that thimerosal is being replaced it will be interesting to see if the autism rate changes.
Being replaced? Thimerosal was removed from childhood vaccines in 1999.
The National Screw Manufacturers Consortium concurs.
Tenn. Code Ann. 39-13-212
Tenn. Code Ann. 39-17-1320 also possibly applies.
We have the same sort of things (Healthline) over here in Saskatchewan.
those trucks don't say "Budweiser" on the side
Thankfully not!
Ridiculous tax rules tying employment and health insurance together? What idiot thought that was a good idea?
A nice case of "It was a good idea at the time", namely during WW2 when wages were fixed (keeping inflation stable), resulting in companies competing for employees working around that by offering extra money in the form of things like health coverage and pensions, which didn't legally count as wages. Follow up with a "don't rock the boat" mentality and other factors occurring in the background (a positive feedback loop in medical costs, for example), and you end up with today.
I don't know how they justify a price anywhere near USD$3000, even the USD$1000 insurance "agreement" price seems excessive.
IMO, it's mostly the end result of a positive feedback loop.
Of the X people who get a procedure, Y of them cannot/do not pay for it (500,000+ medical-related bankruptcies per year is an oft quoted estimate) and the hospital writes it off. To compensate for that loss and maintain profitability, the price of the procedure (and/or other procedures/consumables/etc.) is increased, resulting in Y increasing.
Keep this running for a few decades and add in other factors such as litigation, masking of costs, inappropriate money distribution, and more, and you find the current situation.
In countries where people are starving there is not enough food being produced. THat is the problem (drought, wars, you name it).
Other possible reason : price of food crops is too low (inexpensive food is desirable for society in general) to make a living off of with a reasonable amount of land, so they grow non-food cash crops instead, often for export.
Food being imported for free/cheap lowers price further and results in a feedback loop of the above.
Typical solution to this issue is to decouple the crop sale price from the food purchase price via subsidies, but this doesn't work if the government of the country in question doesn't have things together enough to implement that or isn't interested in doing so for whatever reason.
A theoretical all-terms solution to this problem is fairly easy to come up with, but successfully implementing one is decidedly non-trivial or potentially impossible depending on various factors.
Yes, you're going to lose a bunch in the conversion, but neither batteries nor capacitors can currently come close to competing with liquid hydrocarbons for energy density, by mass or by volume, even after accounting for the inefficiency of engines, so it then becomes worthwhile, as it's easy to move around.
Compare
Li-ion batteries - 0.4-0.7MJ/KG or 0.8-0.9MJ/L
EEStor ultracapacitor prototype - 1.2MJ/KG or 5.7MJ/L
Gasoline - 46.4MJ/KG or 34.2MJ/L
Diesel - 46.2MJ/KG or 37.2MJ/L
Ethanol - 30MJ/KG or 22MJ/L
I'm pretty sure the fast reacting is a matter of scale. A subs reactor is tiny compared to civilian reactors. A Virginia class submarine has a 30MW reactor, an Ohio class sub has a 45MW reactor, the biggest reactors the navy has are the pair of 200MW reactors Nimitz class supercarriers have. On the civilian side, the South Texas Nuclear Generating Station has a pair of 1.25GW reactors. The Bruce Nuclear Generating Station in Ontario has 8 reactors and can put out 6.2GW, and the world's largest, the Kashiwazaki-Kariwa Nuclear Power Plant in Japan, has 7 reactors and outputs 8.2GW.