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Scott GrantSmith
Visionary Wannabe/Wannabe Visionary
Visionary Wannabe/Wannabe Visionary

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Unintended engineering.
Motor protein traversing a microtubule

Kinesin is a motor protein found in eukaryotic cells that helps transport cargo during critical cellular functions such as mitosis and meiosis. This animation depicts the proposed "hand-over-hand" walking mechanism by which the protein traverses a microtubule while carrying a cargo vesicle. The seesaw motion is caused by conformational changes during the binding and hydrolysis of the high-energy molecule adenosine triphosphate (ATP). Because microtubules are polar, motor proteins are only capable of traveling in a specific direction. Most kinesins move from the center of the cell towards the periphery.

Source: (XVIVO + Harvard)

#ScienceGIF #Science #GIF #Protein #Kinesin #Microtubule #Mobility #Cell #Microscopic #Vesicle #Biology #Cellular #Biochemistry #Filaments #ATP #Cargo #Transport
Animated Photo

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How to protect yourself from ATM crime

(Read my column: )

ATM crooks are getting super sophisticated. ATM skimmers now use pinhole cameras to steal your PIN, and tiny skimmers that fit inside the ATM's card scanner where they can't be seen and where they don't interfere with its normal operation.

The good news is that starting Monday, all 13,000 Wells Fargo ATMs will enable you to withdraw money without using your card. Later this year, they'll even let you use Apple Pay or Android Pay to access your account at ATMs.

In fact all the major banks are adding better security to ATMs.

It won't stop ATM crime. Here's why:

#atm #atmskimming #atmshimming

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Fun! (And one of my favorite pieces, too.)

And now something just for fun: The second movement of Beethoven's Symphony no. 7, transformed into a Rumba.

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Well, that's new!
Need to change what I teach! unexpected finding: The lungs, not bone marrow, house most cells that make platelets. 

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Source: Imperial College London
Stars don't have to be massive to evaporate material from around nearby stars and affect their ability to form planets, a new study suggests.

Newly formed stars are surrounded by a disc of dense gas and dust. This is called the proto-planetary disc, as material sticks together within it to form planets.

Stars of different shapes and sizes are all born in huge star-forming regions. Scientists know that when a proto-planetary disc around a relatively small star is very close to a massive star, the larger star can evaporate parts of the proto-planetary disc.

However, it was thought this was only the case where very large stars shone on the proto-planetary disc. Now, researchers led by Imperial College London have discovered that a proto-planetary disc shone on by only a relatively weak star is also losing material. The proto-planetary disc studied, called IM Lup, belongs to a star similar to our Sun.

The researchers estimate that the disc will lose about 3,300 Earth’s worth of material over its 10-million-year lifetime, despite the light from the nearby star being 10,000 times weaker than stars usually caught stripping discs.

Because the light shining on this disc is so much weaker than that shining on known evaporating discs, it was expected that there would be no evaporation. We have shown that actually these stars can evaporate a significant amount of material.

This result has consequences if we want to understand the diversity of exoplanet systems that are being discovered. This phenomenon could significantly affect the planets that can form around different stars. For example, light from nearby stars could limit the maximum size a solar system can be.

Journal Reference:
Thomas J. Haworth, Stefano Facchini, Cathie J. Clarke, L. Ilsedore Cleeves. First evidence of external disc photoevaporation in a low mass star forming region: the case of IM Lup. Monthly Notices of the Royal Astronomical Society: Letters, 2017

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