Shut your beak!

You take a nozzle and you create 10 random variations on the nozzle.

The main valve is turned off.

How do you design that nozzle?

The neck is short and thick.

And this is how you make a valve.

It's a giant duck bill dinosaur.

The front of the upper mouth bends down in what may be a beak.

The bill is black, the legs are grey, and the eye ring is whitish.

Engineers ordered the valve closed and the countdown continued.

And once it's in the right spot, they remove the outer shell, and the heart valve, well, it gets this shape and at that moment it starts beating, instantly.

Have you ever seen a shoebill?

The bill of the apostlebird is short and deep, not unlike that of a finch, whereas the bill of the white winged chough is long and curved, not unlike that of its Old World namesakes, the choughs.

This is actually a heart valve, which we engineered.

Many of these new trombone valve designs have enjoyed great success on the market, but the standard rotary valve remains the most common for trombone valve attachments.

Does the color of the valve matter? What matters here?

In practice, the language barrier impairs this safety valve.

He was born with an incompletely formed heart valve.

This is actually a heart valve that we've engineered, and you can see here, we have the structure of the heart valve and we've seeded that with cells, and then we exercise it.

Now that's a left ventricle pushing blood up through the aortic valve you can see two of the leaflets of the aortic valve working there up into the ascending aorta.

You pump it at a high pressure through a nozzle.

And after 45 generations, you have this incredible nozzle.

It has short red legs, a black bill and red eyes.

The first valve lowers the instrument's pitch by a whole step (2 semitones), the second valve by a half step (1 semitone), and the third valve by one and a half steps (3 semitones).

And the way you engineer this heart valve is the same strategy.

And he will, or she will, calculate the optimal design of the nozzle.

These are the tuna, the billfish and the sharks.

They have a tooth on the side of their beak for the purpose.

Edmontosaurus ( ) is a genus of hadrosaurid (duck billed) dinosaur.

Specimen CAMSMX.39256 is part of the collection of the Sedgwick Museum at Cambridge.

Adults always have white bars on the wings.

It has a funny trilobal shape at the bottom, which contains the aortic valve.

The number of neurons in the cerebellum is related to the number of neurons in the neocortex.

Yet you finished the goose, with the bones and the beak

The second course has chickpeas, chicken, meat, sausage and potato.

Twig in beak, the diminutive bird pranced atop the thick branch.

The beak, feet and legs are all black.

The beak is greyish green, long and slender, and the iris is yellowish orange.

This species has broad barn door wings, a large head and a large thick beak.

Range Atlantic yellow nosed albatrosses nest on islands in the mid Atlantic, including Tristan da Cunha (Inaccessible Island, Middle Island, Nightingale Island, Stoltenhoff Island) and Gough Island.

The forehead was high in relation to the beak, and the nostril was located low on the middle of the beak and surrounded by skin, a combination of features shared only with pigeons.

Gustaf Dalén founded AGA, and received the Nobel Prize for his sun valve.

Are the basics of writing learning how to sharpen a quill?

The dodo may instead have used its large, hooked beak in territorial disputes.

Norell, M. A., Makovicky, P., and Currie, P. J.