Thứ Năm, 22 tháng 11, 2018

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- [Narrator] Curious?

Go in-depth with CSU experts on The Conversation.

First, a conversation starter.

- Balloons, sure.

Helium's not only very light, it's also very stable.

And it doesn't react with other materials.

One of the most important uses of helium

is as a liquid in magnetic resonance imaging or MRI.

That's because helium can remain a liquid

at very, very low temperatures.

Liquid helium keeps the magnets in an MRI

cold enough to generate the enormous

magnetic fields needed for high-resolution images.

Without helium, the energy cost

to do that would be huge.

The same principle makes it vital

in making the semiconductors in your cell phone

and in nuclear magnetic resonance research,

which is what I do.

But our supplies of helium are very limited.

To conserve our precious helium resource,

at CSU we've started to recover the helium that we use.

We're already recovering about 50%

and we're trying to bump it

to as much as 90% recovery.

- [Narrator] There's more to learn from CSU

and a world of experts at theconversation.com.

For more infomation >> What is Helium Used for? | Helium Recovery Research at CSU - Duration: 1:02.

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Sources: Innocent Bystander Was Killed In Denver Gang Shooting - Duration: 0:27.

For more infomation >> Sources: Innocent Bystander Was Killed In Denver Gang Shooting - Duration: 0:27.

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Interview Dr. David Dana - What was your ideal career in childhood? - Duration: 1:35.

When I was a child, I always want to be a doctor, be in the health services

When I was very young, I thought about be a cardiologist

And same in the mature, I found dentistry.

And see the exciting about dentistry have never changed

And I love dentistry...

I think it is a good mix of art and sciences

If you get ability to be a dentist as you want

you have to be scientific and you have to have the sense of people,

every things,...

you get to be very social to the patient...

...so they can relate to you

Affection, art, science and at the end...

you are willing to provide the fanstastic service to people come to you

They have needs as pain, esthetic situation and new teeth

when you finish they so grateful

I think it is one of the best career

and if I have to do it again

, I would be a dentist again

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