photochemically

The objective was a device to produce oxygen photochemically from water.

Photochemically cut into fragments, the colored molecules lose their color.

Vitamin D3 (cholecalciferol) is produced photochemically in the skin from 7-dehydrocholesterol.

In the atmosphere it will be lost because of reaction with photochemically produced hydroxyl radicals.

In atmosphere it is degraded by the photochemically produced hydroxyl radicals.

Phenanthrene can also be obtained photochemically from certain diarylethenes.

The luminescence is photochemically stable and its quantum yield is 0.65.

With this approach, pulsed ultraviolet light energy photochemically shatters plaque, but releases little heat.

The first step involves a photochemically induced conrotatory ring opening of 7-dehydrocholesterol to form pre vitamin D3.

Paquette demonstrated that vinylcyclopropane rearrangements can also be mediated photochemically.

It can also be prepared photochemically, by irradiating cupric hypophosphite with ultraviolet radiation.

The cyclophane can be photochemically converted to the Dewar benzene 6 and back again by application of heat.

This is a photochemically induced conrotatory electrocyclic reaction.

From its structure one would expect it to be very unstable with respect to oxidation, either photochemically or contact with atmospheric oxygen.

Some increases have also occurred during the recent warm days, he said, when sunlight has reacted photochemically with gases and the atmosphere to produce more particles.

Methane can be removed from the atmosphere through a reaction of the photochemically produced hydroxyl free radical (OH).

In the presence of sunlight, NOx and volatile organic compounds react photochemically to produce ozone.

NOCl and cyclohexane react photochemically to give cyclohexanone oxime hydrochloride.

Isomerisation of the 1,3-rings to their 1,2-isomers is a photochemically symmetry allowed process which is thermally symmetry forbidden.

The photochemically damaged T-cells returned to the patient appear to induce cytotoxic effects on T-cell formation.

They slow down the photochemically initiated degradation reactions, to some extent in a similar way to antioxidants (visit the Antioxidants Center).

The most important sink in the methane cycle is reaction with the hydroxyl radical, which is produced photochemically in the atmosphere.

The active part of 3D optical storage media is usually an organic polymer either doped or grafted with the photochemically active species.

In this report, a photochemically induced decarboxylation reaction generates a carbanion intermediate, which subsequently eliminates a beta leaving group.

Uranyl sulfate in solution is readily photochemically reduced to uranium(IV) sulfate.