Photoisomerization in dendrimers by harvesting of low-energy photons

Article Abstract:

It is possible to synthesize dendrimer porphyrins in which a porphyrin chromophore is spatially isolated by the dendrimer framework. The surface of these large dendrimers is spatially frozen, while the interior space is not limited, regardless of the size of the dendrimer framework. It can thus be assumed that spherical, large dendrimers can offer a non-constrained environment protected from collisional energy scattering. It is possible that dendrimers could be used as tunable light-harvesting matrices.

Research, Isomerization

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Half-tax on US energy

Article Abstract:

Pres Clinton's proposed general energy tax will probably be reduced to a limited gasoline tax. Special interests and suspicion of over-broad taxes gutted the tax on the energy content of fossil fuels, making a mockery of any supposed impact on 'greenhouse gases' that cause global warming. The ideal such tax would be based on carbon content of the fuel supplying the energy. In any event, Clinton will soon be back with a new greenhouse tax.

Editorial, Taxation, Clinton, Bill, Tax policy, Gasoline

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Repeated injections of energy in the first 600 ms of the giant flare of SGR 1806-20

Article Abstract:

The unsaturated gamma-ray profile for the first 600 ms of the flare, with a time resolution of 5.48 ms is presented. The peak profile is reached ~50 ms after the onset of the flare, and is the followed by a gradual decrease with superposed oscillatory modulations possibly representing repeated energy injections with ~60-ms intervals.

Astronomical research, Gamma ray astronomy, Solar flares

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