Hay moved the greatness of Rome to Paris and London, and later to Berlin and Moscow and New York.[The year-round growth of green grass in the Mediterranean climate meant that hay was not needed by the Romans. North of the Alps, hay maintained horses and oxen and thus their motive power...
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The effective size of a population,Ne, determines the rate of change in the composition of a population caused by genetic drift, which is the random sampling of genetic variants in a finite population.Neis crucial in determining the level of variability in a population, and the effectiveness of...
We develop a new theory of the spin-Peierls transition in spin-extonehalf{} Heisenberg chains, treating the phonons in a mean-field random-phase approximat... MC Cross,DS Fisher - Springer Berlin Heidelberg 被引量: 594发表: 1979年 Darwin's hypotheses to explain colonization trends: evidence...
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Berlin 11 Berlin 1 1 1 0 1 East Germany 12 Brandenburg 1 18 417 0 417 13 Mecklenburg-Vorpommern 1 8 726 0 726 14 Sachsen 1 13 419 0 419 15 Sachsen-Anhalt 1 14 218 0 218 16 Thüringen 1 23 634 0 634 Germany 16 401 10,797 210 11,007 The table reports the number of admini...
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Wiebols had to make do with the general fertility rate instead of agespecific fertility rates because of the lack of sufficient statistical data. Wiebols was the first person in the Netherlands to build on the views of the Berlin statistician R. Böckh and those of ...
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