The Companion Molecule [Science Tattoos] | The Loom

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Scicurious caffeine440Scicurious, a blogger at Neurotopia with a PhD in physiology, writes,

The molecule is caffeine, and the tattoo itself was designed by artist Glendon Mellow of The Flying Trilobite. I got it to celebrate my PhD.

Why caffeine, you ask?

1) I had a friend once tell me that my friendship was like a hot cup of coffee. Warm, vivacious, stimulating, and comforting. It was one of the best compliments I ever received.

2) I have spent the last six years of my life studying drugs in various forms. Caffeine always spoke to me as a stimulant, because it is so different from other traditional drugs classified as stimulants. I’ve always been a little different myself.

3) I also spent the past six years studying various neurotransmitters. I will spend more years studying different neurotransmitters. Which ones I study and why will change over time, but caffeine will be with me through all of it. :)

Click here to go to the full Science Tattoo Emporium.


Lunar and Asteroidal Water Enables Human Exploration

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The Four Flavors of Lunar Water, Paul Spudis, Air & Space

"New studies of lunar samples, along with results from several missions in recent years, have given us a revolutionary new picture of water on the Moon. Study of volcanic glass from the Apollo 15 landing site in 2008 demonstrated that tiny amounts of water (about 50 parts per million) are present in the interiors of these glasses, suggesting that the lunar mantle (whence they came) contains about ten times this amount. This was a startling result, considering the extreme dryness of other lunar samples."

Scientists Say Ice Lurks in Asteroid's Cold Heart, NASA

"Scientists using a NASA funded telescope have detected water-ice and carbon-based organic compounds on the surface of an asteroid. The cold hard facts of the discovery of the frosty mixture on one of the asteroid belt's largest occupants, suggests that some asteroids, along with their celestial brethren, comets, were the water carriers for a primordial Earth."

Safety?

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A couple of things that escape me follow;

Back in parking only - At what point does this eliminate backing up?

In at least one state the state version of OSHA requires that in a confined space, both the attendant and the entrant must be CPR qualified. Is that rational?

At what point d

Short Circuit Connection

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My customer says that his LV network short circuit (SC) current is 65KA and peak SC is 137 KA. Please tell me how does it affect the motor designer. E.g is my customer expecting 65 KA to flow through the motor windings (stator/rotor) for certian duration e.g 65KA for 0.25 sec.? Please clarify.

Difference Between Iu & Ith

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Can you help me guys know the difference between Ith & Iu rating in MCCB?

I have an MCCB with the rating of Ue = 660 volts & Iu = 1250 Amps

It as a rating also of Ith = 800 amps max @ 45 deg C & Ir = 6300.

I have a motor for my chiller which requires a MCCB wit

MCCB Ith & Ir Acronym Meaning

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We are planning to replace our Chiller with bigger capacity.

The motor rating of old chiller is 375 kw whhle the new one is 570 kw, all at 380 volts, 3phase , 60 hz. The suppllier required us to a circuit breaker with minimum ampacity of 911 amps.

our existing Circuit Breaker is SA

Reflections on “Unruly Democracy” from Bioephemera (Jessica Palmer) | The Intersection

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I think I can safely say that our event on Friday at the Harvard Kennedy School, entitled "Unruly Democracy: Science Blogs and the Public Sphere," was a success, and perhaps even exceeded expectations. The room was full; the presentations were great; we had a historic first panel bringing together representatives of Seed, Discover, and The Boston Globe to talk about three different approaches to science blogging; we had a real debate about whether blogs are "good" or "bad" for science--and we had a move towards some constructive suggestions for finding better norms in the blogosphere. If you want proof that the event has caused some very important thought and reflection, you need go no further than this lengthy post from Jessica Palmer of Bioephemera, who attended and gave a rockin' talk on my panel. Jessica is, broadly speaking, in my camp--or what on Friday was called the "Sunsteinian" camp--when it comes to the negatives of blogging. Why? Some excerpts from her post:
My big concern? While individual blogs often have communities who are internally civil and share norms and history, when you move from blog to blog, those norms and history break down. There are no universal norms in the science blogosphere, ...