Category Archives: Science

Nernstian Sunrise in the Cryosphere

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WAWAwawa ..wawa..wawawa..waawaa..waaawaaa..wa..wa……wa……….wa.

The thermometer read -20 F this morning. It hasn’t been that cold for a few years.  As I sat in the Jeep listening to my battery die hard, my mind wandered fondly to the green meadows of P-Chem and the Nernst equation. This equation sets forth the relationship between temperature and cell potential.  The University of Arizona has this fantastic Nernst simulator (web version) that lets you dial in temperature and immediately see the effect on the voltage of the electrochemical cell.  It is plain to see that as the temperature drops, the EMF drops as well.

Knowing that nature wouldn’t let me summon sufficient wattage from my battery, I went back inside and switched on CNN.  After seeing multiple replays of an indignant journalist hurling a pair of shoes at our president, I was treated to an ad by the Central Intelligence Agency- the CIA. Yeah, the CIA is advertising on CNN!  Take a minute to get your arms around that.

Strangely, uncharacteristically perhaps, I experienced a synergistic swelling of sympathy after seeing the shots of Bush II being assaulted by Iraqi footwear followed by the patriotic CIA ad. For a moment- just a sparkle in time- a quorum of voices in my head agreed that somebody should kick that journalist’s ass. Bush II may be a buffoon, but he is OUR buffoon and nobody should treat him like that. There- I said it.

Aqueous Enceladus

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With the revelation that streams of water ejected from the Saturnian moon Enceladus may arise from subsurface liquid water, the space science crowd is abuzz with excitement about the possibility of life on this frosted novelty moon. It seems to me that if there is aqueous life under the surface of Enceladus, then some of it should have been blown ejected above the surface by these geysers. In fact, a few of the hapless critters may be lying about on the surface this very moment wearing an expression of shock and dismay on their frozen xenomorphic faces. How embarrassing for them.

The three cosmic damp spots- Earth, Europa, and Enceladus. I wonder how long it will take for a lander proposal to get serious evaluation? Life on Enceladus is as likely to resemble a microbial mat as anything.  A lander would have to consider microscopic examination of samples.

Upslope

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We had an upslope storm come and go here in Colorado. It left solid phase hydroxylic acid all over the place. Fortunately, my Jeep has a special traction setting for that situation.

State officials have attempted to deal with it by using Group 1 and Group 2 metal halides as well as diaminocarbonyl to affect the colligative properties of the hydroxylic acid crystals.  This leads to an increase in the friction coefficient of the asphaltene and hydrated calcium oxide conglomerates used by motorists.

Weighty Cogitations on Borohydride

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I have been making a conscious effort to find ways to use borohydride compounds rather than just default to the mighty gray sledge hammer- LAH. There are numerous reports of diverse and wonderful means of activating borohydride to reduce the more refractory functional groups. Recently I prepared and used Zn(BH4)2 on a new substrate. Initially, it appears to work poorly. The grey wall cake seems to contain metallic zinc. If preferences mattered, I’d prefer see electrons reducing my substrate rather than Zn (II) to Zn.

You can’t always get what you want.     M. Jagger

Failing to Ask Better Questions

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We may be entering a time of greater economic hardship than many have known in their lives. The great age of mass consumption, non-returnables, and disposable goods may have peaked.  Boarding the Hummer or the Escalade to drive 5 miles to buy cigarettes and a Big Gulp may be a thing of the past for a greater number of citizens. Americans will have to adopt a lifestyle much more akin to Europe or Japan- reduced living space and reduced (kg of crap)/(person year), reduced portion sizes, more walking, local shopping, and increased use of rail transportation.

The Oil Shock of Summer 2008 snagged the suspenders of this nation of hydrocarbon addicts, sending us reeling into the election/market crash machinery like a drunken farmer pulled into the thresher. Out the back end of this nightmare comes the bloody oat chaff to hint that something horrific happened. Reality strikes, then … silence.

In spite of the plurality of media outlet channels into our collective consciousness, few infotainers are drilling into the core of the problem. The pace and timing of commercial media sets the rhythm of infotainment metered to the masses. Photogenic talking heads selected for their appeal read predigested content for broadcast to attention deficit channel surfers. People dulled by the sheer magnitude of content-dilute information streams and dazzled by the production value of infotainment are compelled to switch on HBO and hide from the world.

Here is what we must do. We must see to it that better questions are being investigated. Instead of asking about the replacement for gasoline, we must ask for a frank disclosure on the sustainability of high consumption. Instead of asking for better or hybrid automobiles, we must frame questions around the concept of a mass transportation network. How can we get intercity rail up and running? How can the Detroit automobile manufactures be cajoled into entering the rail infrastructure business? Where is the hydrogen going to come from to fuel the hydrogen economy? Does it make sense to consume energy to generate hydrogen and then turn around and burn it for propulsion?

The best answers come from the best questions.

The Cost of Scientific Information. Who Pays and Who Gets Paid?

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For anyone outside of academia who has not actually received an invoice from Chemical Abstracts for literature retrieval services, let me assure you that literature searches will cost you real money.

CAS has weighted the basic search operations and defined them in a menu of task equivalents. When you subscribe, you purchase a bundle of tasks. Tasks can be used like a chit- they can be applied for a variety of search operations. Some search operations are assigned a higher value than others. Obviously, a group of big wheels at CAS sat down in a room and hammered out what they perceive the value of a given operation to be.

At this point, it is useful to remind folks that price is not properly based on cost, it is based on what the customer is willing to pay. CAS has an army of clerks punching abstracts into the database, so they do have some real overhead. While CAS honchos are mindful of paying the overhead, they are also trying to find a pricepoint for their information services. On this I do sympathize with them.

However, where I part ways with this organization relates to the monopolistic arrangement they have with information paid for by citizens of this country. The major pipelines of chemical research information seem to plumb directly into CAS and the ACS.  Research that does not get published by the ACS goes to a variety of private publishing houses. The common thread is the transfer of copyright to the publishing house. By turning over the copyright of publically funded research to these organizations, the public relenquishes the right to free access to results it has paid for.

In a very real way, the published results of our university research complex represents national treasure. What do we do with it? We hand it over to publishing organizations who print it in exchange for the copyright. In this way, we can keep paying for access indefinitely.

In fact, lets highlight some of the features of this transfer of wealth and the cost to society of scientific literature-

  1. Citizens and corporations pay taxes to support the various funding agencies like NSF, NIH, DoE, DoT, DoD, etc., as well as provide private grants.
  2. Funding agencies award grants to institutions and researchers to pay for the conduct of research.
  3. Researchers take a combination of funds and pay for stipends, fellowships, materials, and overhead to support the people who do research.
  4. Research is performed and results are communicated as publications.
  5. Researchers sign over the copyright to their work in exchange for publication.
  6. Publishers such as the ACS, Wiley, Elsevier, etc., then hold a copyright on the content in perpetuity.
  7. For the rest of time, the citizenry who paid for the results have to pay a fee to get a copy of the paper, or travel to the nearest University library and hope that the publication isn’t in deep archival storage and unavailable that day.
  8. Thanks to the Bayh-Dole Act, institutions can patent the results of federally funded work. This means that the hopeful citizens of the USA are barred from the practice of the art they paid for. In fact, they have to work out a license agreement which will include a royalty (with audit trail) and probably a hefty upfront, non-refundable, fee to get the ball rolling.
  9. Despite this royalties cash stream that universities have access to, tuition and fees continue to rise well above inflation.
  10. If you are a chemical scholar out of the cover of academic discounting, you face the full brunt of literature search costs yourself. A monograph or book on any given chemistry topic could easily cost $10,000 in non-academic SciFinder charges (ie., $68 per reaction search). A typical technical book may provide an author $3,000 to $10,000 in royalties over 5 years.

Well, you say, the benefit is to society as a whole. The science we pay for goes into society where, like an incoming tide, lifts all boats.

Nonesense! This tide lifts the good ship Elsevier and the USS Chemical Abstracts. It helps large universities get larger. The generation of information has become a cash cow for a handful of organizations who are subject to precious little scrutiny by those who freely supply the scientific content that keeps the system going.

Link-O-Rama

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Interested in building an astronomical observatory in your hometown? Have a look at Observatory 101.  No pictures, but because I know the parties in the article, I can certify that there are excellent bits of advice for those keen on building a community observatory. Remember, square buildings are easier to construct than round buildings. It’s a rectilinear world.

What does it take to be in the upper few percentile in life? No, really. What does it take? See what Malcom Gladwell thinks about it. Plan to set aside 10,000 hours.

Tired of people incessantly humping your leg wanting this or that? Check out this USB accessory. If this is too much for your puritanical sensibilities, try the USB aroma therapy gadget and chill out. Check out ThinkGeek. Lots of cool stuff.

Are you torqued about the Lieberman situation? I know I am. So yell at somebody about it.

Quit whinin’ about yer pathetic cell phone coverage and get ta buildin’ yerself sumkinda antenna to boost the gal’ durn signal.

Blanchard sells gold coinage for those flush with cash.  Load up on Krugerrands.

Need the straight dope on radioisotopes? Check out the list of monograph at the link.

Self-Regulating Nuclear Power Reactor

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Hyperion Power Generation (HPG) company has announced the commercial development of their Hyperion Power Module.  While there are numerous reports on the internet, it is more useful for curious and tech savvy folk to read the patent application (US 20040062340) for a detailed description of the device. While the idea has been knocking around for 50 years, it took the inventor, Dr. Otis G. Peterson, to work out the control issues for a safe, self regulating system.

The reactor uses the hydride of a fissile actinide like U-235 (as UH3 powder) at ~5% enrichment in U-238 to serve as a self-moderating nuclear pile. The marvels of chemistry, namely chemical equilibrium, play a large role here because the hydrogen content (as hydride) varies as a function of temperature. An increase in temperature of the UH3 leads to loss of hydrogen from the U to another hydrogen storing metal. Loss of hydrogen moderator leads to loss of reactivity and a downturn in heat generation. But the downturn in heat generation favors the return of hydrogen (as H2) to the uranium to make hydride. This causes the reactivity of the system to increase, so the rate of fission and heat generation rises as a result.

The system eventually reaches a steady state temperature where the rates of hydrogen gain and loss from uranium become equal and the rate of heat evolution reaches a steady output.

According to Table 1 of the appln, at 5 MW thermal the U-235 critical mass is 30 kg and at 50 MW thermal it is 215 kg. The table also discloses that at a loading of 30 kg U-235 the energy content is 78 MW years and at a loading of 215 kg U-235 the energy content is 540 MW years.

Of course, this is a patent and not a peer reviewed publication. But it was developed at Los Alamos so one would suppose it should have some credibility. The patent suggests that the reactor would be buried underground while in service. It is unclear if that is for shielding or security, or both.

Graphite Items

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Graphite and other refractory materials can be found at the Graphite Store. A large variety of components, crucibles, tubes, etc., fabricated from SIALON, zirconia, alumina, or graphite, can be found.  Graphite items are surprisingly inexpensive. Great for that dungeon or backyard foundry.