'ote To· Hold Unloft 80ard Election· Agai~ . . '. ' , ': TJte SUI Union Board voted Tuesd:ly night to recall the March All· C!lJIlpUS Union Board election because the name of one of the candi· da~es was omitted when the ballots were printed.· • • ~h:n Newsome, A2, Des Moines, was not on thE' h!,lllJlt jn the 21 ,election. the new election wiJl be on April l"and 18. Only students ill the Col. le...

Characteristic times for transport processes in biological systems may be evaluated as mean transit times (MTTs) (for transit states) or mean residence times (MRT) (for steady states). It is shown in a general framework of a (linear) reaction–diffusion–convection equation that these two times are related. Analytical formulas are also derived to calculate moments of exit time distribution using ...

Quantitative knowledge of stabilizationand decomposition processes is necessary to understand, assess and predict effects of land use changes on storage and stability of soil organic carbon (soil C) in the tropics. Although it is well documented that different soil types have different soil C stocks, it is presently unknown how different soil types affect the stability of recently formed soil C...

BACKGROUND AND AIMS Leaf longevity is controlled by the light gradient in the canopy and also by the nitrogen (N) sink strength in the plant. Stand density may influence leaf dynamics through its effects on light gradient and on plant growth and reproduction. This study tests the hypothesis that the control by the light gradient is manifested more in the vegetative period, whereas the opposite ...

The Mosuo people are currently the only matrilocal population in China. The origins of the population and their matrilocal tradition remain unknown. To address these questions, we studied the mitochondrial DNA (mtDNA) diversity of the Mosuo. Lower mtDNA diversity is expected in matrilocal populations because the women remain with their families after marriage, and there is generally less moveme...