robertcarlyle:

My name is Dug. I have just met you, and I love you!

(via mrpandragon)

coffeecollie:

ratboigles:

Not enough people have seen this beautiful oldie and I am here to rectify that

http://www.newgrounds.com/portal/view/558446

what the fuck

And then they kissed. =3

darkoverord:

Yeah anyway I decided to colour this.

darkoverord:

Yeah anyway I decided to colour this.

quarkmaster:

Be’lakor the Dark Master by agnidevi

quarkmaster:

Be’lakor the Dark Master by agnidevi

(via vegan-wargamer)

(via compsense)

fuckyeahfluiddynamics:

Snow rollers are nature’s snowballs, formed when high winds roll a chunk of snow along the surface, allowing it to accumulate more and more material. They occur relatively rarely because their appearance is the culmination of several specific meteorological factors. To form rollers, the ground needs to be icy, with a layer of loose, wet snow above the ice. And, of course, it needs to be windy enough to move the snow without being so windy that snow breaks up. In the photos above, the snow roller got too large for the wind to continue moving it, but the wind didn’t stop blowing. Instead, the snow roller became an obstacle to the flow and a horseshoe vortex formed at its base. The spinning of the vortex dug out the trench in front of and along the sides of the snow roller. This same effect is often seen on the windward side of trees in winter. (Photo credit and submission: S. Benton) 

centralscience:

One of the more expensive mass analyzers is a time-of-flight instrument (ToF). ToF instruments are based on the principle that when you accelerate two ions of different m/z in the same electric field, the heavier ion will travel slower than the lighter ion.

A ToF works by pushing different ions equally into a tube and timing how long it takes for them to reach the other end of the tube. The images above illustrate this very well. The upper picture shows a linear ToF instrument and the middle picture shows a reflectron ToF, which uses electric fields to bounce the ions back. By reflecting the ions back, you will essentially double the length of your tube, without physically having to build a taller instrument.

You can see the ToF mass spec I use in my research in the last photo. That big tall cylinder is the ToF ‘drift tube’ for the mass spec. ToF’s are usually easy to spot when you walk into a lab =P

ToF’s are very high resolution instruments. The instrument I use can distinguish between ions that are 0.001 m/z different. They also require very low pressures (10^-12 vs 10^-9 for most other mass analyzers).

New Technique Shows Living Cells In 3-D

txchnologist:

image

by Txchnologist staff

A new method of creating 3-D images of living cells without disturbing them promises to open an unprecedented view into how they operate.

University of Illinois engineers say the technique, called white-light diffraction tomography, will let researchers watch cellular processes as they unfold, the effects of drugs and how stem cells change into specialized cells.

image

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