Oil Droplets turn Cells into Tiny Lasers

in science on 2016-01-12 22:34 (#10FMD)

Scientists have turned individual cells into miniature lasers by injecting them with droplets of oil or fat mixed with a fluorescent dye that can be activated by short pulses of light. This finding could help to broaden how light is used for both medical diagnosis and treatment. The system was devised by Harvard Medical School scientiest, and it uses droplets of fat or oil within a cell to reflect and amplify light, generating a laser. Conventional luminescent probes, which include fluorescent dyes and proteins, have relatively broad emission spectra. This limits the number of probes that can be used simultaneously, because it is often difficult to distinguish these sources of luminescence from the broad background emissions of naturally occurring molecules in tissue.

http://www.deccanherald.com/content/494474/oil-droplets-turn-cells-tiny.html

Need to download videos while using Tor? (Score: 0)

by Anonymous Coward on 2016-01-15 13:13 (#10S5K)

What you should try is:

youtube-dl

http://rg3.github.com/youtube-dl

A lot of people post here [at the Official Tor Blog] saying with each new TBB release, "Flash still doesn't work!" No kidding? We don't know that already?

Check youtube-dl's list of supported sites at their website. You don't need a browser plugin/addon/extension for this.

I don't know if torify/torsocks is included in the TBB*, but in TAILS I run at the command line (after downloading youtube-dl and a quick verify of the md5/sha1 or sha256 checksums):

chmod a+rx youtube-dl

^ the chmod command only once, then:

torsocks ./youtube-dl URLtovideoorpagewithvideo

Easy. There are other options such as the "User Agent" you may wish to use.

Again, if you use TBB instead of TAILS, programs like youtube-dl may need an additional option, the website for youtube-dl explains it very well.