Russia's remaining territory, to the south and east, constitutes about one-fourth of the country's total area and is dominated by a complex series of high mountain systems.
Fortum, the predominantly state-owned electric power company, operates a nuclear plant at Loviisa, east of Helsinki; nuclear power now constitutes about one-fourth of all power generated.
A group of eight tribes forms what is believed to be the original Brahui nucleus and constitutes about one-eleventh of the Brahui population.
Estimates of the size of the middle class vary (as do definitions of it), but it is generally assumed that it constitutes about one-fourth of Russian society, and much of that is concentrated in Moscow, St .Petersburg, and other urban areas.
St . Petersburg(the tsarist capital) stands alone as the northernmost metropolis, whereas Moscow and Nizhny Novgorod are part of the large urbanized central industrial region, which has a score of large cities, numerous smaller towns, and an urban population that constitutes about one-fifth of Russia's total.
Under aseptic conditions animals were subjected to mid-ventral laparatomy and resection of the left lateral lobe which constitutes about one-third of the total liver.
In eukaryotes, the vast majority (>90%) of mRNA sequences are present at less than 9 copies per cell, with very few sequences present in a high abundance class that constitutes about one-fifth of the cellular RNA [ 36].
Membrane proteins constitute about one third of the proteome.
Customs revenues constitute about one third of domestic revenues, which currently pay for no more than one quarter of the national budget.
