A new peripheral monoamine oxidase inhibitor: 2,9-dimethyl-β-carbolinium iodide

Resumen Yoduro de 2, 9-dimetilo-carbolinio (DMCI) y no sus metabolitos inhibió la enzyma monoamino oxidasa y elevó¹⁴C-serotonia en el corazón e higado, pero no en el cerebro de ratas.

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This work is taken in part from the M. S. thesis presented byP. M. Gardner to the University of Texas Graduate School of Biomedical Sciences at Houston, 1971.     

Frescon: neurophysiological action of a molluscicide.

The molluscidice N-trityl morpholine (Frescon) has an unusual effect on the central nervous system of a freshwater snail. Nerve impulses become grouped into spontaneous "bursts", with many cells firing synchronously. This may result from interference with inhibitory processes.     

Parallel evolution of multiple sex-chromosome systems in the phyllostomatid bats,Carollia andChoeroniscus

Resumen Se describen los cariotipos deCarollia perspicillata, C. brevicauda, yC. castanea de Costa Rica y del Perú, y deChoeroniscus godmani de Costa Rica. La sistema de multiple cromosomas sexuales de machosXY ₁ Y ₂/hembrasXX reportado por investigadores anteriores se encontraba en todos individuos con la excepcion deC. castanea del Perú yChoeroniscus godmani de Costa Rica. Estas poblaciones se consideran de haberse mantenido la sistema primitiva de cromosomas sexualesXX/XY.     

Empirical data sets are algorithmically compressible: reply to McAllister?

James McAllister’s 2003 article, ‘Algorithmic randomness in empirical data’, claims that empirical data sets are algorithmically random, and hence incompressible. We show that this claim is mistaken. We present theoretical arguments and empirical evidence for compressibility, and discuss the matter in the framework of Minimum Message Length (MML) inference.