Buscar
Mostrando ítems 1-10 de 11526
High-temperature and high-pressure ethylene polymerization using a cationic activated metallocene catalytic system
(2008)
Background: Normally, olefin polymerization via metallocene-based catalysis occurs under mild conditions. However, most technology developed for polyolefin production is designed for more severe temperature and pressure ...
Physical–mechanical behavior of concretes exposed to high temperatures and different cooling systems
(Wiley Blackwell Publishing, Inc, 2017-06)
Over their lifetime, concrete structures can suffer from different pathologies, one of them is exposure to high temperatures, which diminishes their load-bearing capacity. This study describes how different concrete types ...
Coastal cooling and increased productivity in the main upwelling zone off Peru since the mid-twentieth century
(Wiley, 2011)
We reconstructed a high-resolution, alkenone-based sea surface temperature (SST) record spanning the last ca. 150 years, from a sediment core retrieved within the main upwelling zone off Peru. A conspicuous SST decline is ...
High-temperature testing in a Charpy impact pendulum using in-situ Joule heating of the specimen
(Wiley Blackwell Publishing, Inc, 2018-05)
In this paper, an innovative approach to high‐temperature testing of subsize Charpy V notched specimens is introduced. The design concept is to heat the specimen on the specimen piece supports up to the moment of impact ...