ABSTRACT: In order to study the applicability of different light response models to the photoresponse curves of four species of Chamaenerion, four species of Chamaenerion collected from Serzilla were ...

Analytical expressions for the contributions of sun and shade leaves to instantaneous canopy photosynthesis are derived. The analysis is based on four assumptions. First, that the canopy is closed in ...

Definition of a conic – general equation of a conic, classification with respect to the general equation of a conic, classification of conics with respect to eccentricity. Equations of conic sections ...

Journal of the Washington Academy of Sciences, Vol. 4, No. 16 (OCTOBER 4, 1914), pp. 467-469 (3 pages) ...