It was shown in preceding papers (2, 3) that when 3,4-benzpyrene dissolved in benzene was irradiated with monochromatic radiation of wave length 2,537 A. in the presence of oxygen, at least two water-soluble substances were included in the products and that these could be recognized, and some of their properties deduced, by spectrophotometric methods. The first, substance A, was characterized a...

—A new subspecies. Siplornis srriaticollis nortoni. is described from the eastern slope of the Andes in Ecuador and northwestern Peru. The nominate form, .V. 5. striaticoliis, is restricted to the Magdalen a Valley of Colombia. Until recently, the Spectacled Pricklctail {Siptornisstriaticoliis) was known only from "Bogota" trade skins without specific locality data, a few specimens collected in...

Anacystis nidulans cells grown under high (3%) CO(2) partial pressure have greater phycocyanin to chlorophyll ratio (Phc/Chl) relative to cells grown under low (0.2%) CO(2) tension (Eley (1971) Plant Cell Physiol 12: 311-316). Absorbance difference spectrophotometry of A. nidulans thylakoid membranes in the ultraviolet (DeltaA(320)) and red (DeltaA(700)) regions of the spectrum reveal photosyst...

Epidemiology is concerned with the distribution and determinants of disease frequency in human populations (Daniels, Flanders, Eley, & Boring, 1993) Basic to an understanding of Epidemiology is the tenet that disease does not affect everybody equally or at random, but that there are determinants that place some people at a higher risk of developing a disease because of genetic predisposition, e...

This book is the most comprehensive and clear text for learning dynamics and many related topics of fractals and complexity that I have encountered. I t is appropriate for both classroom use, and for scientists working in a wide variety of fields. The emphasis is on concepts and applications rather than proofs and derivations. I t is ' hands-on' , with practical exercises and a programming proj...

Eley HL, Russell ST, Tisdale MJ. Mechanism of attenuation of muscle protein degradation induced by tumor necrosis factorand angiotensin II by -hydroxy-methylbutyrate. Am J Physiol Endocrinol Metab 295: E1417–E1426, 2008. First published October 7, 2008; doi:10.1152/ajpendo.90567.2008.—Both tumor necrosis factor(TNF)/interferon(IFN) and angiotensin II (ANG II) induced an increase in total protei...