Proceedings of the National Academy of Sciences of the United States of America, Vol. 73, No. 7 (Jul., 1976), pp. 2211-2215 (5 pages) The variable fluorescence yield of photosystem II is dependent on ...

Milk powder is supplemented by a vital antioxidant, Vitamin C. With the help of 2,6-dichlorophenolindophenol (DPIP) as the titrant, the double Au-ring electrode gives an excellent titration curve, and ...

Example of pale bluish gray redox depletions. Note the faint rusty orange concentration distributed throughout the soil matrix.