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Biotech

Submission + - Researchers Use Salmon DNA to Make LED Lightbulbs (technologyreview.com)

Al writes: "Researchers from the University of Connecticut have created a new light-emitting material by doping spun strands of salmon DNA with fluorescent dyes. The material, which is robust because DNA is such a strong polymer, absorbs energy from ultraviolet light and gives off different colors depending on the amounts of dye its contains. A team led by chemistry professor Gregory Sotzing created the new material by mixing salmon DNA with two types of dye, then pumping the solution from a fine needle while a voltage is applied between the needle tip and a grounded copper plate covered with a glass slide. As the liquid jet comes out, it dries and forms long nanofibers that are deposited on the glass slide as a mat. The researchers then spin this nanofiber mat directly on the surface of an ultraviolet LED to make a white-light emitter. The color-tunable DNA material relies on an energy-transfer mechanism between two different fluorescent dyes,and the DNA keeps the dye molecules separated at a distance of 2 to 10 nanometers from each other."

Comment Re:What a weasel sentence (Score 5, Insightful) 241

What is worse? N1AK suggesting that out of a population of X size, you might get Y innovations (where X:Y has a common ration across various countries), or your post that suggests N1AK is an unscientific proponent of religious zealots?

I'm left wondering if you would make the same claim if we were talking about a (say..) South American country rather than Iran.

Comment shifting the blame? (Score 1) 317

There is no doubt that academia needs to be mindful of the learning environments it creates. But technology is no magic bullet.

A poorly designed lecture might lead to low attendance, but so can a badly designed online or technology-enhanced environment. Some courses simply work well in a large classroom environment. Others are more amenable to a blended learning environment.

Comment Re:Some basic filtering/blacklisting should be... (Score 2, Informative) 76

i've been told i could text the words "stop" to any sender and it would block.

I am with Fido, here in Canada (Ontario).

Of course, the "stop" message costs against my texting quota (i'm not on an unlimited package). I haven't been overrun with rogue SMS so I can't comment on whether this is an effective deterrent.

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Image

Researchers Claim To Be Able To Determine Political Leaning By How Messy You Are 592

According to a study to be published in The Journal of Political Psychology, you can tell someone's political affiliation by looking at the condition of their offices and bedrooms. Conservatives tend to be neat and liberals love a mess. Researchers found that the bedrooms and offices of liberals tend to be colorful and full of books about travel, ethnicity, feminism and music, along with music CDs covering folk, classic and modern rock, as well as art supplies, movie tickets and travel memorabilia. Their conservative contemporaries, on the other hand, tend to surround themselves with calendars, postage stamps, laundry baskets, irons and sewing materials. Their bedrooms and offices are well lit and decorated with sports paraphernalia and flags — especially American ones. Sam Gosling, an associate professor of psychology at the University of Texas at Austin, says these room cues are "behavioral residue." The findings are just the latest in a series of recent attempts to unearth politics in personality, the brain and DNA. I, for one, support a woman's right to clean.
Classic Games (Games)

Robots Aim To Top Humans At Air Hockey 177

An anonymous reader writes "You probably knew that the Deep Blue supercomputer beats chess masters, and that last weekend a software robot defeated four poker champions. But you may have missed this one: a GE Fanuc robot is taking on humans at air hockey. The robot is powered by a special PC-board that can instantly switch between 8-bit and its 32-bit modes. The 8-bit version lost to most human players, but the 32-bit microcontroller has defeated even the best human air hockey players by a ratio of three to one."

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