Estimates of characteristic numbers of real algebraic varieties

We give some explicit bounds for the number of cobordism classes of real algebraic manifolds of real degree less than d, and for the size of the sum of Betti numbers with Z/2 coefficients for the real form of complex manifolds of complex degree less than d.     

Clay-supported reagents; III the intermediacy of nitrous esters in the oxidation of alcohols by clay-supported ferric nitrate.

Stereospecific intermediate nitrite formation occurs in the title reaction.     

Complex Formation between Sugars and the Sodium Cation in Non-Aqueous Solvents

In low dielectric solvents such as pyridine or isopropylamine, sodium perchlorate interacts strongly with a variety of sugars. The interaction is best described as non-specific, with close proximity of the ionic partners maintained, as in a sugar-shared ion pair.