Richard E. Niemeyer

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The present study attempts to determine if the isolated rat liver is capable of synthesizing renin substrate from 14C-labelled amino acids added in the perfusate. The renin substrate is characterized via reaction with renin, forming a substance that is subsequently identified as proangiotensin. Extensive evaluation of the reaction product is carried out by(More)
The works of [Cha-DunAlvInoNieCarFieLaw, Cha-Dun] describe upward sweeps in populations of city-states and attempt to characterize such phenomenon. The model proposed in both [TurKor, Tur] describes how the population, state resources and internal conflict influence each other over time. We show that one can obtain an upward sweep in the population by(More)
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