And when they're missing, it's a barrier.

The hardest barrier really is around stigma reduction.

The racial gap in health is, of course, all too real.

The Great Barrier Reef is managed by the Great Barrier Reef Marine Park Authority under specific federal and state legislation.

The Australian Great Barrier Reef is another success story.

The barrier to rotation about the C O bonds is low.

Weismann is much admired today.

A goal many runners aim for is to break certain time barriers.

The Belize Barrier Reef is a UNESCO recognised World Heritage Site and is the second largest barrier reef in the world, behind Australia's Great Barrier Reef.

Maybe the barrier would be too universal.

lc_garrocho Is it vandalism to confront a barrier?

The greatest barrier to consciousness is the belief that one is already conscious.

And the specific barrier is a specific epitope called the galactosyl, or gal epitope.

This is many times more than what was needed to overcome the energy barrier.

And they impose a barrier to cooperation.

The barrier breaks down and liquefies after several hours.

For the 110 m hurdles, the first hurdle is placed after a run up of 13.72 metres (45 ft) from the starting line.

The iPhone broke the dyke, the wall.

Using deuterium tritium fuel, the resulting energy barrier is about 0.1 MeV.

The effectiveness of a radiant barrier is indicated by its reflectivity, which is the fraction of radiation reflected.

In fact, I think it is a moral imperative that we open the space frontier.

It easily crosses both the blood brain barrier and the placenta, and is excreted into breast milk.

Hormonal factors are capable of altering the mucosal barrier.

About seven years ago, they faced extinction, because Israel announced it would build a separation barrier, and part of this barrier would be built on top of the village.

But the reason why everyone was silent is what I call the psychological barrier of fear.

We'll fly outside it here, just to see this sort of containment.

You've dissolved the barrier between you and other human beings.

Australia's Great Barrier Reef is in danger.

Barreira is a municipality in the state of Ceará in the Northeast region of Brazil.

There are currently active investigations into treatments for a compromised blood brain barrier.

But the solution is animal tissue because it's plentiful, it's cheap, you can get it from young, healthy tissues, but the barrier is immunology.

It has volcanoes on it. And that's Mount Olympus on Mars, which is a kind of huge volcanic shield on that planet.

Can there be a way to connect with someone, here and now, despite a language barrier?

This is a long barrier made up of abruptly rising mountains parallel to the sea, which are part of the Cantabrian Mountains.

Barrier jet A barrier jet in the low levels forms just upstream of mountain chains, with the mountains forcing the jet to be oriented parallel to the mountains.

In practice, the language barrier impairs this safety valve.

When the meninges are inflamed, the blood brain barrier may be disrupted.

It has sometimes been suggested that, rather than being a disease of the immune system, MS is a disease of the blood brain barrier.

Princess Diana is announcing on TV that landmines form a structural barrier to any development, which is really true.

The European Patent Office estimated in 2005 that the average cost of obtaining a European patent (via a Euro direct application, i.e.

Just a piece of barrier tape construction stuff in Italy.

But I had to make a little barrier, going around it, out of cellophane, to stop it moving.

The Coulomb barrier is smallest for isotopes of hydrogen, as their nuclei contain only a single positive charge.

The reef is a very popular destination for tourists, especially in the Whitsunday Islands and Cairns regions.

Consequently, even when the final energy state is lower, there is a large energy barrier that must first be overcome.