Asclepiadaceae novae boreali-occidentali-madagascarienses

Recurrent Novae , Classical Novae , Symbiotic Novae , and Population II

Light curve analysis of decay phase of nova outburst are summarized. Nova duration is determined by the strong wind mass-loss which depends only on the white dwarf mass. Fast novae correspond very massive white dwarfs and very slow novae correspond almost lower mass limit of white dwarfs. This relation is shown in both of classical novae and recurrent novae. Light curves are theoretically repro...

Calotropis Procera (Asclepiadaceae) : A Review

Calotropis procera belongs to the family Asclepiadaceae. It is a erect, soft wooded, evergreen perennial shrub. C. procera commonly known as “Akra” and “milk weed”. All the parts (root, stem, leaf and flowers) of C. procera are in common use in traditionally system of medicine. The present paper is an attempt to provide a detailed botanical description, classification, pharmacological study of ...

Articulated cork in Calotropis procera (Asclepiadaceae)

Pollinators of Oxypetalum (Asclepiadaceae) in southeastern Brazil.

Floral visitors of seven species of Oxypetalum were registered in Viçosa, State of Minas Gerais. O. appendiculatum, O. banksii subsp, banksii, O. alpinumn var. alpinum and O. pachyglossum are pollinated by wasps, being Polybia ignobilis (Vespidae) a pollinator of these four species. It seems that P ignobilis promotes interspecific pollinations mainly between O. alpinum var. alpinum and O. pachy...

Nucleosynthesis in Classical Novae

A general review of the relevance of classical novae for the chemical evolution of the Galaxy, as well as for Galactic radioactivity is presented. A special emphasis is put on the pioneering work done by Jim Truran in this field of research. The impact of recent developments in nuclear astrophysics on nova nucleosynthesis, together with the prospects for observability of novae radioactivities w...