RAISE YOUR VOICE - Tony Hawk

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See original: Uploads by Cop15 RAISE YOUR VOICE - Tony Hawk

Converting my @TweetDeck groups into public lists. Reasonably easy process.

mrgunn: Converting my @TweetDeck groups into public lists. Reasonably easy process.

See original: Twitter Converting my @TweetDeck groups into public lists. Reasonably easy process.

Le jeu de la concertation autour des sites Seveso : une analyse des dispositifs de gouvernance locale dans l’agglomération dunkerquoise

À travers une approche territoriale menée dans l’agglomération dunkerquoise où sont concentrés pas moins de 14 sites industriels classés SEVESO, nous avons réalisé une étude des outils de gouvernance locale intervenant dans la gestion des risques et pollutions industriels. Nous avons interrogé les formes d’interaction entre les acteurs (entreprises, représentants de la société civile, acteurs institutionnels) et structures (SPPPI, CLIC, CLI…) concernés par ces risques afin de mettre en évidence les modalités de gouvernance à l’œuvre. Comment les acteurs locaux s’organisent-ils pour vivre et se prémunir  dans un environnement pollué par les rejets industriels et exposé aux risques ? Qui participe aux modes de gestion institutionnels, dans quelles structures ? Comment les différentes structures de concertation coexistent-elles et comment se structurent leurs interventions dans la gouvernance locale ?

Pour répondre à ces questionnements, une analyse des instances de concertation a été réalisée au moyen d’entretiens qualitatifs menés auprès des acteurs locaux y participant.

Les entretiens laissent notamment apparaître des attitudes ambiguës à l’égard des structures de concertation implantées sur le territoire. Bien que les participants critiquent les modalités de fonctionnement de ces dispositifs et leur absence de pouvoir décisionnel, le jeu de la concertation pratiqué dans ces instances semble pourtant accepté de tous, chacun y trouvant un intérêt stratégique. Au-delà de la mise en évidence d’une grande asymétrie des rôles et de la légitimité des acteurs, cette analyse des structures de concertation nous livre également une double lecture du jeu des acteurs locaux « multipositionnés » dans des réseaux formels et informels de relations dans lesquels se définissent les règles de la gouvernance locale.

See original: VertigO - la revue électronique en sciences de l'environnement Le jeu de la concertation autour des sites Seveso : une analyse des dispositifs de gouvernance locale dans l’agglomération dunkerquoise

@franknorman itunes is a closed network which has reason to have your financial details. Also, you're buying downloads - totally different

mrgunn: @franknorman itunes is a closed network which has reason to have your financial details. Also, you're buying downloads - totally different

See original: Twitter @franknorman itunes is a closed network which has reason to have your financial details. Also, you're buying downloads - totally different

UCSB, UCL scientists rescue visual function in rats using induced pluripotent stem cells

(Santa Barbara, Calif.) -- -- An international team of scientists has rescued visual function in laboratory rats with eye disease by using cells similar to stem cells. The research shows the potential for stem cell-based therapies to treat age-related macular degeneration in humans.


Related posts:

  1. Induced stem cells advance An international team of researchers has successfully converted adult cells...
  2. Eye cells believed to be retinal stem cells are misidentified Cells isolated from the eye that many scientists believed were...
  3. Eye cells believed to be retinal stem cells are misidentified Cells isolated from the eye that many scientists believed were...

See original: Science News UCSB, UCL scientists rescue visual function in rats using induced pluripotent stem cells

UC Davis helps orphaned mountain gorilla babies return home to Congo National Park

More than two years after being evacuated following the 2007 killings of their mothers, mountain gorilla babies Ndakasi and Ndeze this week returned home to the Democratic Republic of Congo, moving into a new custom-built forest sanctuary.


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  1. Congo cracks down on illegal logging Posted for Anjali Nayar The EU signed a deal with...
  2. Congo cracks down on illegal logging Posted for Anjali Nayar The EU signed a deal with...
  3. UNC study: Insecticide-treated bed nets reduce infant deaths in Democratic Republic of Congo CHAPEL HILL, N.C. - Giving insecticide-treated bed nets to nearly...

See original: Science News UC Davis helps orphaned mountain gorilla babies return home to Congo National Park

The end of deforestation in the Brazilian Amazon?

A new article in the December 4 issue of Science addresses how the combined efforts of government commitments and market transition could save forest and reduce carbon emissions in Brazil.


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  1. Seeing REDD over forest management Posted for Anjali Nayar New initiatives to save tropical forests...
  2. Lula reasserts Brazilian control over new oilfield Brazilian President Luiz Inacio Lula da Silva has staked...
  3. Lula reasserts Brazilian control over new oilfield Brazilian President Luiz Inacio Lula da Silva has staked...

See original: Science News The end of deforestation in the Brazilian Amazon?

Understanding DNA repair and cancer

A protein that plays a key role in copying DNA also plays a vital role in repairing breaks in it, UC Davis scientists have found. The work is helping researchers understand how cancer cells can resist radiation and chemotherapy, as well as how cells become cancerous in the first place.


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  1. DNA repair mechanisms relocate in response to stress Like doctors making house calls, some DNA repair enzymes can...
  2. New information about DNA repair mechanism could lead to better cancer drugs Researchers at Washington University School of Medicine in St. Louis...
  3. Discovery may result in new test to determine predisposition to cancer Researchers at UCLA's Jonsson Comprehensive Cancer Center have developed an...

See original: Science News Understanding DNA repair and cancer

Quake prediction model developed

The third in a series of papers in the journal Nature completes the case for a new method of predicting earthquakes.

The forecasting model developed by Danijel Schorlemmer, of the USC College of Letters, Arts and Sciences, aims to predict the rough size and location of future quakes. Testing of the model is underway.


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  1. Prediction model superior to traditional criteria in bladder treatment decision ATLANTA--A statistical model can accurately predict which patients will have...
  2. National laboratory avoids Italy quake damage The Gran Sasso National Laboratory, a particle physics research centre...
  3. China quake a ‘once in 4,000 years’ event A massive earthquake that killed tens of thousands in the...

See original: Science News Quake prediction model developed

Birds call to warn friends and enemies

Birds' alarm calls serve both to alert other birds to danger and to warn off predators. And some birds can pull a ventriloquist's trick, singing from the side of their mouths, according to a UC Davis study.


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  1. US birds: still in major trouble A "State of the Birds" report released by the...
  2. Birds Use Light, Not Magnetic Field, to Migrate A cell in the eye may be worth two...
  3. Plant communication: Sagebrush engage in self-recognition and warn of danger DAVIS--"To thine own self be true" may take on a...

See original: Science News Birds call to warn friends and enemies

LHC Smash! [Starts With A Bang]

You're making me angry. You wouldn't like me when I'm angry. -Bruce Banner

Hey, LHC, what did those protons ever do to you? You take them, accelerate them to the fastest speeds we've ever accelerated protons to on Earth, and then smash them into one another with more energy than ever before!

imagecmshiggsevent.jpg

The Large Hadron Collider takes bunches of protons, accelerates them in opposite directions inside its giant ring, and smashes them together -- ideally -- at the centers of these giant detectors.

cms_neu3.jpg

At Fermilab, each proton would come in with an energy up to about 1.0 TeV, for a total collision energy of 2.0 TeV. Each TeV, remember, is a Tera-electron-Volt, or 1012 electron-Volts.

At the LHC, they just broke that record, as each proton came in with an energy of 1.18 TeV, for a total of 2.36 TeV. In theory, the LHC can support a maximum energy of 7 TeV for a total of 14 TeV, although practically it won't get there anytime soon.

Atlas.jpg

So you might reasonably ask yourself the following:

Why do I need all that energy to find the Higgs, which should have a mass that needs less that 0.2 TeV of energy to create?

I mean, wouldn't it make sense that Fermilab should've found the Higgs already? It's just a question of energy, isn't it?

Well, it's only a little bit more complicated than that. Your reasoning would be perfect if -- instead of protons -- you were colliding electrons with positrons.

006PositronAnn2_600by600.jpg

Before they had the LHC (the Large Hadron Collider), they had LEP (the Large Electron-Positron... collider) in the same underground tunnel! They made many discoveries there, including the Z0 boson, but only got up to 110 GeV of energy total.

But there's a big difference between electrons and protons. Electrons are -- as far as we can tell -- just points with mass and charge. You smash a 55 GeV electron with a 55 GeV positron, and you're guaranteed to get 110 GeV of energy available to create new particles, whether they're photons, bosons, quarks, or anything else.

Feynman_EP_Annihilation.png

But protons don't work that way. Protons are made up not only of three quarks each, but also countless gluons and many sea quarks. Although each proton may have a tremendous amount of energy, it isn't the protons, per se, that collide. It's just a single quark or gluon inside each proton that goes "smash!"

r_muon_top.jpg

Well, each collision, if you're lucky, will give you maybe 10% of the total energy available for creating new particles. So you can get to higher energies with protons than electrons, but they're also far less efficient. They're also significantly messier! The top image is what a proton-proton collision looks like, while an electron-positron collision looks like this:

60144-004-99DE09BE.jpg

So clean in comparison! But so limited in energy, too. So we can get more energy, eventually, out of proton-proton collisions. But the trade-off is that you have to put a lot more work in to get the same results as electron-positron collisions, including sifting through billions of useless collisions to get the one useful one.

So be patient; it's going to take a long time for any new discoveries to come to light. But the payoff? If the Higgs exists, the LHC is going to find it!

990707.jpg

(Eventually.) Good luck to everyone over there; I hope to hear the good news soon! In the meantime, smash away!

hulk-smash1.jpg

Read the comments on this post...

Also check out the featured ScienceBlog of the week: Applied Statistics

See original: ScienceBlogs Select LHC Smash! [Starts With A Bang]

State of the Archives, Dec. 3, 2009 by David Ferriero, Archivist of the United States http://ff.im/coy8q

mrgunn: State of the Archives, Dec. 3, 2009 by David Ferriero, Archivist of the United States http://ff.im/coy8q

See original: Twitter State of the Archives, Dec. 3, 2009 by David Ferriero, Archivist of the United States http://ff.im/coy8q

@Comprendia Yep, did that myself recently, also set up gmail labels and "skip the inbox" for others.

mrgunn: @Comprendia Yep, did that myself recently, also set up gmail labels and "skip the inbox" for others.

See original: Twitter @Comprendia Yep, did that myself recently, also set up gmail labels and "skip the inbox" for others.