They're made from silica. Why not structures from cars like that?

They are ionized or excited by the collision of particles precipitated into the atmosphere.

The disaffection of Bahrain s Shi a majority precipitated a series of violent incidents in the 1990s.

If a reversed order of running of the compounds is desired, an apolar stationary phase should be used, such as C18 functionalized silica.

The execution of the French king Louis XVI on by the revolutionaries precipitated an international response.

Dry water actually consists of 95 percent liquid water, but the silica coating prevents the water droplets from combining and turning back into a bulk liquid.

Glass for flat glass has a higher magnesium oxide and sodium oxide content than container glass, and a lower silica, calcium oxide, and aluminium oxide content.

But all indications are that the North Koreans have accelerated their testing schedule and have made nuclear weapons a top priority.

Generally speaking, more mafic magmas, such as those that form basalt, are hotter and less viscous than more silica rich magmas, such as those that form rhyolite.

Globalization may not have created these layers of conflicts, but it has accelerated them by making the differences more visible and palpable.

For instance, reagent quality water must have very low levels of impurities such as sodium and chloride ions, silica, and bacteria, as well as a very high electrical resistivity.

Toothpaste typically has small particles of silica, aluminum oxide, calcium carbonate, or calcium phosphate to grind off stains formed by colored molecules that have absorbed onto the teeth from food.

But his well, the only way I can articulate how it felt was that it precipitated my medical decline.

The Palestinian Arab revolt was precipitated by popular resistance against heavy demands for conscripts, as peasants were well aware that conscription was little more than a death sentence.

Indeed, what will now shape the future of the region is not democracy, but the violent divide between Shiites and Sunnis that the Iraq war precipitated.

Last year s wave of wildcat strikes in the mining sector which precipitated the infamous Marikana massacre ended up shaving 0.5 off the country s GDP growth in 2012.

Although precipitated by local conditions, the Thatcher (or more broadly the Thatcher Reagan) revolution became an instantly recognizable global brand for a set of ideas that inspired policies to free markets from government interference.

Whichever country precipitated it Germany by threatening to abandon the euro, or Greece or Spain by actually doing so would trigger economic chaos and incur its neighbors wrath.

It is likely that the violence that erupted in the fall of 2005 in many French cities and suburbs, in which young and unemployed black people played a large part, has accelerated the willingness of French officials to come to terms with this historical legacy.

A short prolongation of the time to complete an Multilateral Fund contract was seen as important in particular circumstances, where necessary, for Article 5 (1) Parties that had accelerated phase out agreements with the Multilateral Fund.

The combination of bad weather, deficiencies of the hastily established collective farms, and massive confiscation of grain precipitated a serious famine, and several million peasants died of starvation, mostly in Ukraine, Kazakhstan and parts of southwestern Russia.

So its failure to press the United States to redress the mortgage market vulnerabilities that precipitated the current financial crisis indicates that much remains to be done.

A short prolongation of the time to complete an Multilateral Fund contract was seen as important in particular circumstances, where necessary, for Article 5 (1) Parties that had accelerated phase out agreements with the Multilateral Fund.

But, while a widespread consensus held that communism was nothing but a dead end, China s economic success, and the authoritarian backlash in Russia following Boris Yeltsin s departure from the Kremlin a decade ago, prompted a more pessimistic analysis.