but safety aside small reactors are not very efficient or cheap
- yes, and the early computers weren't efficient or cheap. We need innovation in this area obviously, it won't come as long as governments are standing in the way of people trying to improve in this industry.
I dunno bout you, but I don't trust my neighbor to build a nuclear reactor in his back yard. YOUR neighbors might be PhDs in physics, but mine is a hillbilly. Duct tape is not nuclear-rated AFIK.
I worked for a company where passwords were limited to 8 characters, no more or less. Also since passwords had to be changed every 90 days most employees just chose a 6 or 7 character base password and incremented it by 1 each time.
Producing Transportation Fuels with Less Work Diane Hildebrandt,1 David Glasser,1 Brendon Hausberger,1 Bilal Patel,1 Benjamin J. Glasser2
The long-term strategy for reducing emissions of carbon dioxide (CO2) and other greenhouse gases is to replace fossil fuels with renewable resources. In the short term, liquids derived from fossil resources will be used to power transportation, in part because liquid fuels have an established production and delivery infrastructure as well as high energy density. Liquid fuels are overwhelmingly derived from increasingly scarce crude oil, and it would thus be beneficial to make liquid fuels from other sources, such as coal and biomass (1, 2).
One reason why liquid transportation fuels are derived from petroleum instead of coal is that converting coal into liquids is much more energy-intensive. Thus, substantially less CO2 is released in the production of a gallon of gasoline derived from petroleum than in the production of fuel from coal-to-liquids (CTL) processes (1). The carbon atoms in coal are largely bonded to one another in graphitic networks, and breaking these bonds requires a large energy input. Energy is also needed to supply hydrogen to the process. We outline reaction chemistry and processing designs that could dramatically reduce these energy inputs and minimize the amount of CO2 emissions that would be emitted or mitigated by other costly strategies, such as carbon capture and sequestration (3).
There are many methods that convert carbon-rich sources into liquid fuels, including pyrolysis, direct liquefaction, and indirect liquefaction, which proceeds through gasification such as the Fischer-Tropsch (FT) and methanol-to-olefins (MTO) processes (2, 4). Of these, the FT process
3C + 4H2O -> 2CO + 4H2 + CO2 -> 2(-CH2-) + 2H2O + CO (1)
(where CO is carbon monoxide and -CH2- represents the alkane products) has been successfully implemented on the largest scale industrially (2, 5) but is very inefficient in that a large part of the carbon fed into the process ends up as CO2, either directly or indirectly from fuel consumption for heating the reaction (5). However, FT technology gasifies the coal so that unwanted ash, heavy metals, and sulfur can be removed (2).
To identify more efficient ways to run chemical processes, theoretical tools have been developed that can look at the industrial plant as a whole (6-9), even at the level of rethinking the reaction chemistry. These tools assess what would happen if we could operate the plant as efficiently as possible (that is, near thermodynamic reversibility).
For example, thermodynamic principles have been applied to examine the production of molecular hydrogen (H2) by thermochemical cycles (6). By analyzing reversible processes, limits can be placed on the best performance that can be achieved for a given cycle. For example, H2 could be produced through chemical reactions powered directly by the heat from a nuclear reactor, such as zinc reacting with water to produce zinc oxide and H2. The zinc is recovered by heat-driven decomposition of zinc oxide. A thermodynamic analysis has shown that the currently proposed thermochemical cycles for producing H2 cannot compete with electrolysis of water through direct use of electricity (6).
Thermodynamic analysis of reversible processes can be coupled with theoretical efficiencies to allow comparison of real processes. Such an analysis was performed for direct H2 use for transportation, and the findings were compared with other strategies for reducing greenhouse emissions and U.S. oil imports (6, 10). This work has brought to light serious concerns about the feasibility of an H2 economy.
However, recent work suggests a path forward for the sustainable production of liquid hydrocarbon fuel for transportation that would make use of H2 produced from carbon-free energy, such as solar or wind (1, 11). These processes add H2 to the syngas (CO and H2) produced from gasification of biomass, a
America certainly has no morales anyway, their treatment of Cuba over the past 50 years has been disgusting!! War on terror, what the fuck are they doing in Cuba......Scumbags!!
Wake up and stop listening to your bullshit controlled media. Well the government is working on immigration reform
You have to remember that AT&T is just redirecting the money they would normally pay towards discounting the phone to Apple. And when you consider that they usually don't discount phones by $432 ($18*24 months) they're actually probably making more money from iPhone users.
Slashdot Mirror
I dunno bout you, but I don't trust my neighbor to build a nuclear reactor in his back yard. YOUR neighbors might be PhDs in physics, but mine is a hillbilly. Duct tape is not nuclear-rated AFIK.
He does a helluva tuneup on my truck, though...
You sure about that? http://www.amazon.com/3M-8979N-Performance-Nuclear-Slate/dp/B000NG3ZKI
I can't even say whoosh, it's more like http://www.youtube.com/watch?v=k4f3vJjvR9c
I'm guessing he means HVDC.
You have that backwards. Express isn't union. Ground is. Mainly because of the Federal Railway Labor Act.
I worked for a company where passwords were limited to 8 characters, no more or less. Also since passwords had to be changed every 90 days most employees just chose a 6 or 7 character base password and incremented it by 1 each time.
Do you have any numbers to back this up? I did a quick search and from what I found Canada, on the high end has 11 million vs the US 223 million.
http://www.tburke.net/fun_stuff/pictures/computers/ethernetkiller.htm
Also works for USB, VGA/DVI and more...
Montana already has that covered. http://data.opi.state.mt.us/BILLS/2009/BillHtml/HB0246.htm
RPN, aka Reverse Polish Notation. http://en.wikipedia.org/wiki/Reverse_Polish_notation
You may want to think twice about that. http://www.cracked.com/video_17328_why-having-wolverines-claws-would-suck.html
Producing Transportation Fuels with Less Work
Diane Hildebrandt,1 David Glasser,1 Brendon Hausberger,1 Bilal Patel,1 Benjamin J. Glasser2
The long-term strategy for reducing emissions of carbon dioxide (CO2) and other greenhouse gases is to replace fossil fuels with renewable resources. In the short term, liquids derived from fossil resources will be used to power transportation, in part because liquid fuels have an established production and delivery infrastructure as well as high energy density. Liquid fuels are overwhelmingly derived from increasingly scarce crude oil, and it would thus be beneficial to make liquid fuels from other sources, such as coal and biomass (1, 2).
One reason why liquid transportation fuels are derived from petroleum instead of coal is that converting coal into liquids is much more energy-intensive. Thus, substantially less CO2 is released in the production of a gallon of gasoline derived from petroleum than in the production of fuel from coal-to-liquids (CTL) processes (1). The carbon atoms in coal are largely bonded to one another in graphitic networks, and breaking these bonds requires a large energy input. Energy is also needed to supply hydrogen to the process. We outline reaction chemistry and processing designs that could dramatically reduce these energy inputs and minimize the amount of CO2 emissions that would be emitted or mitigated by other costly strategies, such as carbon capture and sequestration (3).
There are many methods that convert carbon-rich sources into liquid fuels, including pyrolysis, direct liquefaction, and indirect liquefaction, which proceeds through gasification such as the Fischer-Tropsch (FT) and methanol-to-olefins (MTO) processes (2, 4). Of these, the FT process
3C + 4H2O -> 2CO + 4H2 + CO2 -> 2(-CH2-) + 2H2O + CO (1)
(where CO is carbon monoxide and -CH2- represents the alkane products) has been successfully implemented on the largest scale industrially (2, 5) but is very inefficient in that a large part of the carbon fed into the process ends up as CO2, either directly or indirectly from fuel consumption for heating the reaction (5). However, FT technology gasifies the coal so that unwanted ash, heavy metals, and sulfur can be removed (2).
To identify more efficient ways to run chemical processes, theoretical tools have been developed that can look at the industrial plant as a whole (6-9), even at the level of rethinking the reaction chemistry. These tools assess what would happen if we could operate the plant as efficiently as possible (that is, near thermodynamic reversibility).
For example, thermodynamic principles have been applied to examine the production of molecular hydrogen (H2) by thermochemical cycles (6). By analyzing reversible processes, limits can be placed on the best performance that can be achieved for a given cycle. For example, H2 could be produced through chemical reactions powered directly by the heat from a nuclear reactor, such as zinc reacting with water to produce zinc oxide and H2. The zinc is recovered by heat-driven decomposition of zinc oxide. A thermodynamic analysis has shown that the currently proposed thermochemical cycles for producing H2 cannot compete with electrolysis of water through direct use of electricity (6).
Thermodynamic analysis of reversible processes can be coupled with theoretical efficiencies to allow comparison of real processes. Such an analysis was performed for direct H2 use for transportation, and the findings were compared with other strategies for reducing greenhouse emissions and U.S. oil imports (6, 10). This work has brought to light serious concerns about the feasibility of an H2 economy.
However, recent work suggests a path forward for the sustainable production of liquid hydrocarbon fuel for transportation that would make use of H2 produced from carbon-free energy, such as solar or wind (1, 11). These processes add H2 to the syngas (CO and H2) produced from gasification of biomass, a
If they're falling I'd assume they'd just keep dropping all the way to the ground.
Great, now other games are going to try to one-up them and Half-Life 3 is going to make you design a 386 processor in order to solve a puzzle.
Dude, I hate to burst your bubble, but the satellites are like way above the clouds.
Man, I wish I had mod points, but who would I mod redundant?
Not just racing games, but any game with models based off real objects. I'm glad to see an end brought to stupidity like this.
Actually there was just an extra / appended to the url http://en.wikipedia.org/wiki/James_Clerk_Maxwell.
A simple lock box like http://cableorganizer.com/computer-cabinets/security-lock-box.htm should suffice.
I agree, AMPS is much more danceable.
Well, we could go at night.
You never know, it could happen.
You have to remember that AT&T is just redirecting the money they would normally pay towards discounting the phone to Apple. And when you consider that they usually don't discount phones by $432 ($18*24 months) they're actually probably making more money from iPhone users.
Well the cellphone as a mouse is already taken care of http://hackedgadgets.com/2006/08/15/nokia-cell-pho ne-mouse/. Now you just need to get a battery compatible with the wireless charging.