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The effect of the wavelength of irradiated light on the photocopolymerizations of oxygen with styrene (1) and α-methylstyrene (2) was investigated in connection with the charge-transfer bands observed between these monomers and oxygen, with the latter as an electron acceptor. It appeared that the excitation of the charge-transfer bands is responsible for the copolymerizations and that the photoabsorptions due to 1 and 2 do not contribute to the reactions, although the excited singlet states of these compounds were quenched by oxygen according to a Stern-Volmer plot.

The usefullness of pre-hospital diagnosis of acute coronary syndrome using supplemental 12-lead ECG equipped on the Doctor Car

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