it is valid for shuttle fuel where every pound counts. But when it comes to practical applications, unpleasant properties of H2 or H2-generating chemicals greatly outweight the potential weight savings and CO2 absence. I work with hydrogen in the lab and I am not afraid of it - but I do not want it in my house or in my car (unless my mother in law is driving it). That stuff leaks like crazy, embrittels many metals, has to be higly pressurized or cooled down to few Kelvines for storage, burns with invisible flame and has very wide detonation range in mix with air.
you sound like a person who never heard of freeze-drying. The problem is that water is volatile and tends to dry up at reduced pressure unless the temperature is extremely low. Vacuum => no liquid water => probably no life.
Ach, sir, you will scarcely credit how refractory these criminals can be. Many times we reasoned with them. "My dear fellow," we said, "think of all the pain and trouble you are causing to us!" But no, they would not listen! Ach, they are very troublesome!
Was not the basic problem of data transmission over power lines that every street lamp or a household appliance had a potential of broadcasting the transmited data in a pretty strong radio signal?
the composites Ruthan is currently using are not heat-resistant at all. Going to ceramics and carbon-carbon would add a lot of weight. And, they would need to use about 10times more fuel to reach the orbit.
"A Soviet scientist deduced from the Americans' silence on the topic that they were pursuing an atomic bomb. The Soviets soon followed suit."
"what really made it easy for the Soviets to build their own bomb was knowing that it would work. It wasn't even certain whether the research would take anywhere, whether an atomic bomb was possible at all."
To anyone who is interested in the history of the project and its continuation in hydrogen bomb effort, I strongly recommend Gregg Herken's "Brotherhood of the Bomb: The Tangled Lives and Loyalties of Robert Oppenheimer, Ernest Lawrence, and Edward Teller".
The focus of this detailed book is on personal politics of the project in US but the important developments in USSR are mentioned also. Using declassified documents from KGB and FBI archives, Herken shows that Kurchatov had a complete scoop on MAUD report (British effort) and then on Manhattan project. By espionage, they got everything US had known until 1946. The first russian nuclear reactor was based on Hanford reactors. The first russian nuke was exact replica of Fat Man. That much for uncertainity.
What realy changed in Russia after Hiroshima was not the attitude of scientists but the priorities of the political leadership. Beria the Terrible ("He is our Himmler", Stalin introduced him playfuly to Churchil) became the boss of the russian program. Money was no problem. The expenditures was fantastic while russians were dying of starvation and lack of medical care.
"Early gun-type designs are interesting. Because they're so simple, you can (if you like) actually understand the entire critical assembly process, from the start of fission to the propagation of the produced shockwave"
You are a USDA-certified Troll. You have no clue what you are writing about. You have never used SciFinder or Chemical Abstracts for your work but you are making sweeping judgements about SciFinder value and use.
SciFinder is a super-useful (but expensive) service. ACS is putting huge amount of academic slave time into creating a maintaining up-to date database searchable by formula, reaction, biological activities, physical properties, etc. (Not only keywords, like Google). Scifinder covers the entire literature, all the way to the pre-war times. Even if somebody digitalised and translated the entire published chemistry and biology literature including patents and put into Google, it would not be nearly as useful as SciFinder. There is no good way of indexing chemical formulas of organic molecules into database automaticaly - somebody has to read the literature - it turns out to be actualy millions pages of chemistry and biology publications every month. Someone has to understand what is he reading and enter the data manualy, one at the time.
Google does not provide a reasonable alternative to Scifinder. MDL-Crossfire aka Beilstein does. Crossfire can get free and nobody will sue them. But if they re-name themselves "Crossfire Scholar", they will have a trademark problem too.
If you were a qualified person (or had a qualified qirlfriend at least), you would have know that the real problem with bug resistance is not happening because primary care physicians are overprescribing antibiotics.
Some Staphs that grow and infect patients in hospitals have already seen every known antibiotics including Vanco. It is probably poor hospital hygiene combined with under-use of antibiotics in the hospital (especialy on long-term hospitalised patients).
ACS will win because it has trademark for the name which is a name for a scientific search engine.
If there was a homework&tutoring service "Private Scholar" or a academia singles service "Lonely Scholar" and ACS went after it, if would be stupid and ACS would lose.
Kellogs successfully prevented Chevron from using a tiger as a convenience store food maskot because the cartoon tiger looked a lot like the one on the box of cornflakes. (If the tiger was used to sell gasoline or motoroil it would be OK).
On the free vs. fee-based controversy: unlike Google, Scifinder Scholar abstracts all chemistry and biology journals and chemical formulas there. With many leading journals producing thousands of pages every month each and hundreds of journals indexed, it costs enormous amount of man-time to keep the database up-to date. Maybe modern search technology can make the database building process cheaper. But there is no good way to index the structural formulas. Someone (with degree in chemistry) has to read the article, understand what it means and enter the chemicals, reactions and keywords one at the time.
these are just speculations. All that the data actually show is that there is some crystalline ice.
Quaoar is very cold, only few kelvines and pure water at this temperature freezes into amorphous ice. What is not known is the chemical composition and the history of Quaoar. So it is possible that the ice on Quaoar formed at higher temperatures but this observation is not a proof of a continuous thermal process.
PEG linker is attached to some injectable drugs to modify (prolong and delay) onset of their effect. PEG is also part of some IV formulations. I don't remember that safety of PEG would ever be a big concern. Besides, these patients with spinal injury have to take only one or few doses, it is not like they would be on it for lifetime.
Slashdot Mirror
The performance would be the same. What is so great about 'self-playing organ'?
Writing newspaper articles for lazy journalists is one of the favorite PR methods.
It is a profession that does require flexibility with your integrity. (Much like being a defense attorney, lobbyist or advertisement guy)
it is valid for shuttle fuel where every pound counts. But when it comes to practical applications, unpleasant properties of H2 or H2-generating chemicals greatly outweight the potential weight savings and CO2 absence. I work with hydrogen in the lab and I am not afraid of it - but I do not want it in my house or in my car (unless my mother in law is driving it). That stuff leaks like crazy, embrittels many metals, has to be higly pressurized or cooled down to few Kelvines for storage, burns with invisible flame and has very wide detonation range in mix with air.
You are right about spores but the parent was about organisms that can actualy live in vaccum, not just staying viable.
you sound like a person who never heard of freeze-drying. The problem is that water is volatile and tends to dry up at reduced pressure unless the temperature is extremely low. Vacuum => no liquid water => probably no life.
Ach, sir, you will scarcely credit how refractory these criminals can be. Many times we reasoned with them. "My dear fellow," we said, "think of all the pain and trouble you are causing to us!" But no, they would not listen! Ach, they are very troublesome!
EA management is run by Sims too.
Was not the basic problem of data transmission over power lines that every street lamp or a household appliance had a potential of broadcasting the transmited data in a pretty strong radio signal?
now we should realy start wearing the tinfoil hats
If I was a nudist and 70y old (like the guy in the article) I would take any opportunity for scaring the younger generation.
no, it just involves a bloody nuclear reactor flying over my head.
the composites Ruthan is currently using are not heat-resistant at all. Going to ceramics and carbon-carbon would add a lot of weight. And, they would need to use about 10times more fuel to reach the orbit.
"A Soviet scientist deduced from the Americans' silence on the topic that they were pursuing an atomic bomb. The Soviets soon followed suit."
"what really made it easy for the Soviets to build their own bomb was knowing that it would work. It wasn't even certain whether the research would take anywhere, whether an atomic bomb was possible at all."
To anyone who is interested in the history of the project and its continuation in hydrogen bomb effort, I strongly recommend Gregg Herken's "Brotherhood of the Bomb: The Tangled Lives and Loyalties of Robert Oppenheimer, Ernest Lawrence, and Edward Teller".
The focus of this detailed book is on personal politics of the project in US but the important developments in USSR are mentioned also. Using declassified documents from KGB and FBI archives, Herken shows that Kurchatov had a complete scoop on MAUD report (British effort) and then on Manhattan project. By espionage, they got everything US had known until 1946. The first russian nuclear reactor was based on Hanford reactors. The first russian nuke was exact replica of Fat Man. That much for uncertainity.
What realy changed in Russia after Hiroshima was not the attitude of scientists but the priorities of the political leadership. Beria the Terrible ("He is our Himmler", Stalin introduced him playfuly to Churchil) became the boss of the russian program. Money was no problem. The expenditures was fantastic while russians were dying of starvation and lack of medical care.
The max probability 0.022 was too low for worrying about it.
I would get concerned only if the number was something like 15 or 172.
"Early gun-type designs are interesting. Because they're so simple, you can (if you like) actually understand the entire critical assembly process, from the start of fission to the propagation of the produced shockwave"
can be re-named as Combine (Packaged Goods & Arts)
For Ubi employees, new concern will be about the bottom line: watching your butt and getting in line.
or even better, with the air compressor buried under anthill
Windows is a very good analogy to the Scolar trademark - I do not know the details, it depends on what was trademarked by Microsoft and when.
Also, I am not happy that ACS has decided to go after Google - I hope they will find some amicable solution. But I think ACS has a valid point here.
You are a USDA-certified Troll. You have no clue what you are writing about. You have never used SciFinder or Chemical Abstracts for your work but you are making sweeping judgements about SciFinder value and use.
SciFinder is a super-useful (but expensive) service. ACS is putting huge amount of academic slave time into creating a maintaining up-to date database searchable by formula, reaction, biological activities, physical properties, etc. (Not only keywords, like Google). Scifinder covers the entire literature, all the way to the pre-war times. Even if somebody digitalised and translated the entire published chemistry and biology literature including patents and put into Google, it would not be nearly as useful as SciFinder. There is no good way of indexing chemical formulas of organic molecules into database automaticaly - somebody has to read the literature - it turns out to be actualy millions pages of chemistry and biology publications every month. Someone has to understand what is he reading and enter the data manualy, one at the time.
Google does not provide a reasonable alternative to Scifinder. MDL-Crossfire aka Beilstein does. Crossfire can get free and nobody will sue them. But if they re-name themselves "Crossfire Scholar", they will have a trademark problem too.
If you were a qualified person (or had a qualified qirlfriend at least), you would have know that the real problem with bug resistance is not happening because primary care physicians are overprescribing antibiotics.
Some Staphs that grow and infect patients in hospitals have already seen every known antibiotics including Vanco. It is probably poor hospital hygiene combined with under-use of antibiotics in the hospital (especialy on long-term hospitalised patients).
ACS will win because it has trademark for the name which is a name for a scientific search engine.
If there was a homework&tutoring service "Private Scholar" or a academia singles service "Lonely Scholar" and ACS went after it, if would be stupid and ACS would lose.
Kellogs successfully prevented Chevron from using a tiger as a convenience store food maskot because the cartoon tiger looked a lot like the one on the box of cornflakes. (If the tiger was used to sell gasoline or motoroil it would be OK).
On the free vs. fee-based controversy: unlike Google, Scifinder Scholar abstracts all chemistry and biology journals and chemical formulas there. With many leading journals producing thousands of pages every month each and hundreds of journals indexed, it costs enormous amount of man-time to keep the database up-to date. Maybe modern search technology can make the database building process cheaper. But there is no good way to index the structural formulas. Someone (with degree in chemistry) has to read the article, understand what it means and enter the chemicals, reactions and keywords one at the time.
no. A fully functional grandfather, yes. (rocking chair is push-reset every 13 hour)
Why no-one seems to worry about leaky and exploding batteries?
these are just speculations. All that the data actually show is that there is some crystalline ice.
Quaoar is very cold, only few kelvines and pure water at this temperature freezes into amorphous ice. What is not known is the chemical composition and the history of Quaoar. So it is possible that the ice on Quaoar formed at higher temperatures but this observation is not a proof of a continuous thermal process.
PEG linker is attached to some injectable drugs to modify (prolong and delay) onset of their effect. PEG is also part of some IV formulations. I don't remember that safety of PEG would ever be a big concern. Besides, these patients with spinal injury have to take only one or few doses, it is not like they would be on it for lifetime.