PURPOSE To study the safety, technical efficacy, and histopathology of the ethylene vinyl alcohol copolymer (EVAL) embolic mixture in an animal model. METHODS Microcatheterization of the rete was performed in 29 swine. The clinical, angiographic, and histopathologic consequences of superselective injection of the two principal embolic mixture components (EVAL and dimethyl sulfoxide [DMSO]) we...

Processes controlling preservation and accumulation of organic matter (OM) in marine sediments are highly sensitive towards both natural anthropogenic impacts. Thus, the sedimentary OM is considered a key proxy for characterization recent past environments . Along Peruvian continental margin (PCM), high primary production an intense oxygen minimum zone (OMZ) favor sediments. Spatial variations ...

This paper dealt with the controlled release of two kinds of drugs, 5-fluorouracil (5-FU) and hydrocortisonum (Hydro.) and loaded poly(ethylene-vinylalcohol) (EVAL), which composed 5-FU/EVAL and Hydro./EVAL matrix systems. The results were analyzed using the pseudo-steady-diffusion models coupled with the fundamental concepts of percolation theory. The percolation thresholds for the two systems...

Abstract The Early Jurassic was marked by several episodes of rapid climate changes and environmental perturbation. These culminated during the Toarcian Oceanic Anoxic Event (T-OAE), an episode global warming that led to widespread deposition organic-rich shales. shales NW Europe have also yielded exceptionally preserved fossils marine vertebrates invertebrates, but potential links between occu...

The Chang 7 member of the Upper Triassic Yanchang Formation in Ordos Basin is considered to hold main source rocks for conventional and unconventional oil gas. lamination or lithology alteration vertical lateral directions, even over a short distance, common feature lacustrine rocks. differences geochemical characteristics black shales, dark mudstones interbedded sandstones have been scarcely r...