This experiment investigated the effect of intraruminal infusion of propionic acid on the net flux of nitrogenous compounds across the mesenteric- (MDV) and portal-(PDV) drained viscera of seven Friesian steers, average BW 127 kg (SEM 4.6), fed a grass-pellet diet. Each received by random allocation 0 (control), .5, or 1.0 mol of propionic acid/d for 7 d. Blood flow in mesenteric and portal vei...

This experiment was conducted to determine the significance of the peptide amino acid (PAA) contribution to amino acid (AA) net flux in the portal vein and to evaluate the capacity for peptide absorption in the different segments of the gastrointestinal tract of ruminants. Four sheep (64+/-3 kg BW) were fitted with catheters and blood flow probes, allowing AA net flux measurements across the po...

We present new and revised data for the phocine distemper virus (PDV) epidemics that resulted in the deaths of more than 23 000 harbour seals Phoca vitulina in 1988 and 30 000 in 2002. On both occasions the epidemics started at the Danish island of Anholt in central Kattegat, and subsequently spread to adjacent colonies in a stepwise fashion. However, this pattern was not maintained throughout ...

Este artigo provém de um trabalho conclusão curso em Licenciatura Matemática na Universidade Estadual Santa Cruz (UESC), que teve como objetivo favorecer o ensino da às Pessoas com Deficiência Visual (PDV), utilizando Projetos Construção Objetos Concretos (PCOC), úteis construção do Número. Sabe-se acesso visual objetos conhecimento é uma das exigências para compreensão conceitos matemáticos co...

An RNA-dependent RNA polymerase associated with particles of maize rough dwarf virus, a Fijivirus, was characterized using two in vitro assays differing in their energy regeneration systems. Optimum reaction rates occurred at pH 8.0 to 8.5 at 20 degrees C. The presence of virus and Mn2+ or Mg2+ was essential for enzyme activity; Mn2+ stimulated more incorporation events than Mg2+, at optimum co...

Two independent proxy reconstructions of sea surface temperature reflect a common pattern of Pacific decadal sea surface temperature variability over the past two centuries. Since the pattern extends to both the northern and southern hemispheres, this result supports the idea that Pacific decadal variability is a basin-wide phenomenon originating in the tropics. The causes of Pacific decadal cl...

The human homolog of the Drosophila prune protein (from PRUNE, which encodes h-prune), which interacts with glycogen synthase kinase 3, promotes cellular motility. H-prune also interacts with nm23-H1, a suppressor of cancer metastasis. It has been reported that stimulation of cellular motility by h-prune is enhanced by its interaction with nm23-H1 in breast cancer cells. In the present study, w...

Helicobacter pylori is a bacterium that chronically colonizes the gastric epithelium and infects approximately half of the human population worldwide. This pathogen is responsible for chronic gastritis and a high percentage of peptic ulcers, and its presence has been correlated to gastric cancer development (1-4). Several factors have been associated with this germ’s aggressiveness and hence im...