Nitrogen oxides contribute to haze and form small particles that make people sick and even kill them.
It is similar to ordinary soap, but the atoms of iron help form tiny particles that are easily removed magnetically.
But at a site 50km east of the eruption, a quarter of the ash falling to the ground was in the form of particles of ten microns or less.
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The protease works as a molecular scissors to cut out proteins that then form new viral particles.
Another issue is that a second type of pollutant, aerosols such as the minute sulphate particles that form when sulphurous fuel is burned, promote the formation of clouds.
When that connection occurs, it releases huge amounts of energy, causing the Sun to eject tons of particles in the form of plasma.
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In that time some of the particles get together and form antihydrogen.
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These are the tiny airborne particles around which water droplets form, thus catalysing the condensation of clouds.
Last year Monterrey, the country's industrial capital, clocked a higher reading than Mexico City on its index of particles smaller than 10 microns, a form of pollution that is no less dangerous than ozone.
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Mr Zimmet said these smaller particles may deliver the insulin in the more accessible monomer form.
Solgels are colloids, or liquids with uniformly dispersed solid particles (like milk) that are converted to gel form.
As the particles turn around the circle, they lose energy in the form of exceptionally intense X-rays.
As plastic is a petroleum based product these small particles act as persistent organic polluters, which means that they form a sponge attracting toxins such as insecticides and pesticides.
After orchestrating 2 million collisions between lead nuclei and protons, like the sort you see above, the collider's Compact Muon Solenoid group and researchers at MIT suspect that stray, linked pairs of gluon particles in the mix were signs of color-glass condensate, a currently theory-only form of matter that sees gluons travel in liquid-like, quantum-entangled waves.
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