3,4-Benzpyrene Decomposition under Sun Light

Under the Sun Light. From Physics to Image Processing

Evolution under the sun: optimizing light harvesting in photosynthesis.

The emergence and evolution of life on our planet was possible because the sun provides energy to our biosphere. Indeed, all life forms need energy for existence and proliferation in space and time. Light-energy conversion takes place in photosynthetic organisms that evolve in various environments featuring an impressive range of light intensities that span several orders of magnitude. This pro...

Effect of light-activated benzpyrene on urease activity.

For a number of years the view has been widely held that sulfur compounds are concerned in some manner with the production of tumors by aromatic carcinogens. The best known effect of simple polycyclic hydrocarbons upon sulfur metabolism is the formation of mercapturic acids. Since previous in vestigations in this laboratory (8, 9) have shown that mercapturic acids are not present in the urine a...

Something new under the sun

Innovation, long the preserve of technocratic elites, is becoming more open. This will be good for the world, argues Vijay Vaitheeswaran alent of 100 miles-per-gallon using alternative energy. The charitable arm of Mr Page's rm has already taken hybrid petrol electric vehicles, like the Toyota Prius, and turned them into even cleaner plug inn versions which can be topped up from an electric soc...

Malpractice: new under the sun?

In a quotation which opens the very first section of Kenneth Allen de Ville's magnificent work "Medical Malpractice in Nineteenth-Century America" [1], the author cites J.R. Weist's 1884 observation on the malpractice law suits of the time, that the "remedy of these evils in the profession involves many and grave problems in sociology which I cannot now stop to consider" [2]. He might well have...