Species nova Rafflesiacearum ex Formosa

Tahanidae (Dipt.) d'Iran, Tabanus mofidii nova species

The Active Quiescence of HR Del ( Nova Del 1967 ) ⋆ The Ex - Nova HR

This new UV study of the ex-nova HR Del is based on all of the data obtained with the International Ultraviolet Explorer (IUE) satellite, and includes the important series of spectra taken in 1988 and 1992 that have not been analyzed so far. This has allowed us to make a detailed study of both the long-timescale and the short-timescale UV variations, after the return of the nova, around 1981-19...

Eclipse studies of the dwarf-nova Ex Draconis

We report on V and R high speed photometry of the dwarf nova EX Dra in quiescence and in outburst. The analysis of the outburst lightcurves indicates that the outbursts do not start in the outer disc regions. The disc expands during the rise to maximum and shrinks during decline and along the following quiescent period. The decrease in brightness at the later stages of the outburst is due to th...

Some observations on the diseases of Brunus edwardii (Species nova).

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Stable inheritance of host species-derived microchromosomes in the gynogenetic fish Poecilia formosa.

B chromosomes are additional, usually unstable constituents of the genome of many organisms. Their origin, however, is often unclear and their evolutionary relevance is not well understood. They may range from being deleterious to neutral or even beneficial. We have followed the genetic fate of B chromosomes in the asexual, all-female fish Poecilia formosa over eight generations. In this specie...