Youtube daily report Aug 29 2017

By now you've probably heard of 3D printing.

From car parts and plastic toys to works of art and even desserts, 3D printing offers

endless possibilities in our increasingly D-I-Y world.

Perhaps one of the most exciting and promising of these

is the ability to print human tissue and organs.

It might sound like the stuff of the future, but as highlighted in the August issue of

MRS Bulletin, the era of 3D bioprinting is here.

And if researchers can work together to solve the major challenges facing this rapidly growing field

they could make organ and tissue engineering as easy as pushing a button.

By far the greatest challenge in printing living matter is making sure that matter stays alive

both during and after printing.

Cells thrive within a narrow range of temperature, pressure, and oxygen level

and must remain sterile.

Bioprinting experts must therefore ensure that the inside of their devices and,

more importantly, the inks that they print with provide a biofriendly environment.

For materials scientists, the issue represents an important design problem: giving liquid-loving

cells a happy home while making implants strong enough to keep their shape once in the body.

Researchers have devised several creative solutions to that problem—for example, using

biocompatible polymers called bioinks that gel when squeezed out of a printing nozzle.

But many other issues still remain.

For one, it's not entirely clear how all the forces felt by bioinks affect cell survival.

Or, for that matter, how cells themselves affect the mechanical and material properties

of bioinks and printed tissue.

And then, of course, there's cost.

Even when researchers understand these various structure-property relationships

will bioprinting be affordable?

Still, a future where organs such as liver, bone, and heart can be printed to order may

not be far away.

The articles gathered in this month's MRS Bulletin take a close look at how researchers

are tackling these and other issues as they vie to bring bioprinting into the mainstream.

To learn more about the current status and future of 3D bioprinting, register for the

MRS OnDemand webinar "3D Bioprinting of Organs and Organs-on-a-Chip"

For more infomation >> 3D bioprinting of organs - Duration: 2:27.

-------------------------------------------

Delete A Folder That Won't Delete How to SOLVED] Windows 7/8/10 - Duration: 6:49.

For more infomation >> Delete A Folder That Won't Delete How to SOLVED] Windows 7/8/10 - Duration: 6:49.

-------------------------------------------

Nightcore - Believer (Female Cover) || Lyrics [HD] - Duration: 2:47.

Believer - Imagine Dragons (Cover by Samantha Potter)

For more infomation >> Nightcore - Believer (Female Cover) || Lyrics [HD] - Duration: 2:47.

-------------------------------------------

I TRY AN AMERICAN FAST FOOD - Duration: 7:28.

Hi everyone, what's up ? I hope you're doing well

I'm Yoann, and you're on my channel: My life in the United States

So we're here today, in a different setting

we're parked at the moment

At SONIC. Sonic is a drive-in

it's an American fast food. It's something very different, that we don't have in France

so I thought I would bring you along

and show you

the American fast food SONIC

SONIC is a drive-in, the difference between drive in and drive-through

Mcdonald's etc in France are drive-through

we can do with our car, go to the side

order, they give us our food

and we go with our order or we eat inside the restaurant

A drive in is completely different

we park here, I'll show you in a minute. We park with our car

we order at the window, I'll show you, there is a menu

with an intercom. I'll show you everything in a second

and you just have to wait in your car and someone brings the order directly to your car.

and you eat in your car

it's totally different

and an interesting thing here

is that most of the persons working here deliver the food in roller skates

I also heard that they organize roller skating contest, to see who's the fastest one

it's pretty neat

so I'll show you right now the menu and how it works when you arrive and order

so when you arrive at Sonic

you have different spots

where you can park your car

and at each of them, there is a menu and an intercom

you park, and when you're ready, you can look at the menu,

and as you can see the menu is pretty big

Sonic is well known for its drinks and its different mix

it's written on the boards that you can select among more than 398k drinks

there are so many different flavors

you can mix many different flavors and create

more than 398k drinks

it's crazy ! GO USA! We're going to order together

you'll see, we'll order a few American items

And when you're ready, you simply have to push the red button

you talk to the person and you pay directly there

and you just have to wait for your order to be delivered

There we go, we're ready to order. We agreed on a few things

We're going to try a few typical items

We'll have a cheese burger menu, with tater tots

tater tots are deep-fried, grated potatoes in a ball shape

so good !

we'll also have...

Pickle-O's, which are fried pickles

yes you heard it, fried pickles! I'm excited because

I've never had them !

and we'll have corn dogs

it's a sausage (usually a hot dog) coated in a thick layer of cornmeal batter on a stick

and it's so so good

and we'll also have their house drink

Cherry Limeade, a kind of cherry limonade, a Sonic classic

so we'll try together

and for desert, we'll have a masterblast

peanut butter & snickers

we'll see ! I'll order a small size

you'll see how it is, because the sizes here

are pretty big

as I explained, when you're ready to order

you just have to click on the button

now I have to pay with my card

for everything I order, it's only $15

and you see how we pay, I just inserted my card

and it's done !

so I ordered and I just have to wait to be delivered here at my car

there we go ! So usually, the real tradition

is to eat in your car, but to show you correctly the food we'll

go and sit at a table outside

so there we go, here we have...

our menu, our 2 corn dogs

which are as I said,

a fried sausage on a stick

tater tots, fried potatoes

and here we have the fried pickles

well, well

we're going to try everything !

Today for our special guests, we have Aurane, hi Aurane ! and Andrea ! Hi Andrea

So we're ready to taste

You're going to try their Cherry limeade

and you'll tell us what you think

so good? I'm going to try too

it's so good !

Now I'm going to try for you and for the first time

the fried pickles

let's go

it's very good

of course, it's fried, it's greasy, so it's good !

literally, pickles dipped in breadcrumbs

and fried

the little tater tots (potatoes)

so good !

taste !

it's good isn't it ?

as you can see here, the drink, it's a medium size

which is literally the large one in France

to finish, the last item is the corndog

the sausage on a stick

it's so good, look how it looks like

so there we go, I hope you enjoyed it, if you did, give it a big thumbs up !

I enjoyed

sharing with you this American experience

if you're in the States, that's something you should try

because it's pretty neat

and they have special things to try, such as the pickles, etc.

and I'll see you next time, on my channel: My life in the USA, bye !

For more infomation >> I TRY AN AMERICAN FAST FOOD - Duration: 7:28.

-------------------------------------------

Surprise Eggs Nursery Rhym...

For more infomation >> Surprise Eggs Nursery Rhym...

-------------------------------------------

Voici comment reconnaître les signes d'un cancer - Duration: 6:46.

For more infomation >> Voici comment reconnaître les signes d'un cancer - Duration: 6:46.

-------------------------------------------

Kia cee'd Sporty Wagon 1.4 CVVT NAVIGATOR PLUS PACK (Navi,Cruise,Clima) - Duration: 0:42.

For more infomation >> Kia cee'd Sporty Wagon 1.4 CVVT NAVIGATOR PLUS PACK (Navi,Cruise,Clima) - Duration: 0:42.

-------------------------------------------

GuitarCoop Interview Series - DAVID RUSSELL - Part 1 - Duration: 22:23.

For more infomation >> GuitarCoop Interview Series - DAVID RUSSELL - Part 1 - Duration: 22:23.

-------------------------------------------

The Future of Interstellar Communication - Duration: 4:14.

In Star Trek, if the Enterprise needed to talk to Starfleet Command, they could just

send a quick message or have a conversation in real time, even if they were light-years

away from each other.

But like most things in Star Trek, that's not how it works in real life.

For one thing, the waves that carry messages can only travel as fast as the speed of light,

or about 300 million meters per second -- and that may sound really fast, but space is also really big.

And as a spacecraft gets farther away, it becomes harder for us to detect its signal,

so we need bigger and bigger detectors.

Since we're still focusing on exploring our own star system, that's not a big deal right now.

If we ever sent a probe to another star, though, we'd need a detector the size of a city

to get any data from it.

But scientists are already working on a solution for that!

And it might involve using the Sun as a giant lens to strengthen the signal.

When you think of a lens, you might think of a curved piece of glass that can magnify

objects, like a telescope.

But the Sun actually creates a lens of its own, called a gravitational lens, because

huge objects like stars have so much gravity that they warp and curve space around them.

Isn't that just the coolest thing in the universe?

When those stars curve space, any radiation traveling toward them -- like light from a

distant galaxy -- gets curved, too.

The star bends the light around itself like a giant lens, and if you looked at the star

from a distance, you would see a magnified, distorted ring of light around it.

It sounds kind of complicated -because it is.

But gravitational lenses are super useful because they allow us to see distant objects

that would normally be blocked by big stars or clusters of galaxies.

And because gravitational lenses bend any kind of radiation, not just visible light,

they could also be used to magnify radio waves or other communication signals!

If a spacecraft around another star shot a message right at our Sun, the Sun's gravitational

lens would magnify and boost the signal so we could pick it up.

It wouldn't speed up the message, because the signal would already be traveling at the

speed of light, but it would make it stronger, so we could send more data and detect it more easily.

We have a whole lot of work to do before we're ready for that, though.

The main problem is that we wouldn't be able to just use a big receiving dish on Earth

like we do with missions today.

Like others lenses, the lens created by the Sun has a focal point -- a place where all

of the waves of radiation come together.

The Sun actually has a bunch of focal points, or a focal line, but the closest place to

pick up a signal is over 80 billion kilometers away — more than 550 times the distance

from the Earth to the Sun.

Compare that to the Voyager 1 probe, which is about 21 billion kilometers away.

That's the farthest we've ever sent anything into space, and it took 40 years to get there.

And to use the Sun for long-distance communication, it might actually be even better to go farther

than 80 billion kilometers, because that would help us avoid solar flares and other interference

from the Sun that could scramble communications signals.

On the other hand, if we're at the point where we're able to send missions all the

way to other stars, maybe getting to 80 Billion kilometers out wouldn't be much of a problem.

We'd also have to figure out how to reconstruct the message we received, though.

The signal would be warped by the Sun's gravity, so we'd have to do a lot of math

to make sense of the jumbled messages we got.

On top of that, we'd only be able to get messages from spacecraft on the exact opposite

side of the Sun from our receiving probe.

And if we wanted to send a message instead of just receiving one, we'd also have to

get the faraway spacecraft somewhere on the Sun's focal line so it could pick up our

signal, which is pretty limiting when you're trying to explore strange new worlds.

So we have our work cut out for us.

But some astronomers think it could definitely happen, and that one day, we might have a

huge interstellar communications network using gravitational lenses across the galaxy.

Astronomers can't help but dream big.

But even if we never figure out how to visit other stars, we could at least use the Sun's

gravitational lens as a big telescope.

Instead of translating messages and getting the probes in the right spots, we could just

use the lens to get a close-up view at whatever is directly behind the Sun, like exoplanets

or distant galaxies.

It would be like having a telescope with a lens more than a million kilometers across!

But either way, we're definitely not ready to use the Sun as a gravitational lens for

anything yet — let alone interstellar Snapchat.

Thanks for watching this episode of SciShow Space, brought to you by our awesome patrons

on Patreon who make everything at SciShow possible.

If you'd like to help us keep explaining ideas like this, you can go to patreon.com/scishow.

And for more episodes about the universe and the sun which makes everything we do possible

also, you can go to youtube.com/scishowspace and subscribe.