organic unity

Abstract UNITY is a model for concurrent specifications with complete logic proving progress properties of the form “ P leads to Q ”. generalized U-specifications by giving more freedom specify steps that are be taken infinitely often. In particular, these can correspond non-total relations. The generalization keeps sound and complete. paper exploits in two ways. Firstly, remains when specifica...

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at roots of unity

Journal: :Journal of Physics A: Mathematical and General 1999

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Isoprene photochemistry over the Amazon rainforest.

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2016

Yingjun Liu Joel Brito Matthew R Dorris Jean C Rivera-Rios Roger Seco Kelvin H Bates Paulo Artaxo Sergio Duvoisin Frank N Keutsch Saewung Kim Allen H Goldstein Alex B Guenther Antonio O Manzi Rodrigo A F Souza Stephen R Springston Thomas B Watson Karena A McKinney Scot T Martin

Isoprene photooxidation is a major driver of atmospheric chemistry over forested regions. Isoprene reacts with hydroxyl radicals (OH) and molecular oxygen to produce isoprene peroxy radicals (ISOPOO). These radicals can react with hydroperoxyl radicals (HO2) to dominantly produce hydroxyhydroperoxides (ISOPOOH). They can also react with nitric oxide (NO) to largely produce methyl vinyl ketone (...

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