Sentences with phrase «particles of zinc»

Additionally, if nano particles of zinc oxide or titanium oxide are used, these can enter the body and carry risks as well.

These can be as modest as the particles of zinc oxide in sunscreens, but they can also be reinforcing fibers in new composites or carbon nanotube wires in ultraminiaturized electronics.

Obviously it is so important not to get sunburned, however, since it is hard to know exactly how the chemical sunscreens affect developing bodies, my dermatologist suggests using physical sunblock (i.e. particles of zinc oxide or titanium dioxide that are suspended in the cream, and lay on top of your skin to form a literal physical barrier) for nursing moms and kids through adolescence.

Not exact matches

Metal oxides such as zinc oxide and titanium dioxide are increasingly being used in sunscreens and cosmetics in the form of nanoparticles — microscopic particles of matter measured on the nanoscale.

Wilson, the sporting goods manufacturer, has nanoengineered layers of clay to double the playing life of its Double Core tennis balls; L'Oréal uses nanoscale particles and capsules in their cosmetic creams that allow replenishing ingredients to penetrate deep into the skin; and the Australian company Advanced Powder Technology has created Zinclear, a translucent zinc oxide sunblock composed of nanoparticles as small as the tiniest known viruses.

Electrodes and wiring, for example, can be made using silver particles mixed into silicone, while the bulk of a battery can be made using a paste of zinc particles and liquid electrolyte.

The greater the concentration of Hispanics, Asians, African Americans or poor residents in an area, the more likely that potentially dangerous compounds such as vanadium, nitrates and zinc are in the mix of fine particles they breathe.

In a second stage devised to obtain any remaining gold and silver particles, the ore, now the consistency of sand, was soaked in watered - down potassium cyanide, which drew the metals out into a form that could be trapped by trays filled with zinc shavings.

The researchers succeeded by overcoming some of the technical challenges presented in the fabrication of the platinum - zinc nanoparticles with an ordered lattice structure, which function best at the small sizes in which the chemically reactive surface area is highest in proportion to the particle volume.

Both zinc oxide and titanium dioxide — the two most effective physical blockers according to the EWG — are nanoparticles; it's the size of the particles that matters, and that's tough for brands to gauge and therefore market accurately.

Because your body only absorbs a certain number of charged particles at once, the presence of calcium may cause a temporary lower absorption rate of other naturally charged minerals, such as iron, zinc and magnesium.

The major choice in the U.S. is between «chemical» sunscreens, which have inferior stability, penetrate the skin and may disrupt the body's hormone systems, and «mineral» sunscreens (zinc and titanium), which often contain micronized — or nano - scale particles of those minerals.