26 resultados para oil and gas exploration
Resumo:
Gas temperature is of major importance in plasma based surface treatment, since the surface processes are strongly temperature sensitive. The spatial distribution of reactive species responsible for surface modification is also influenced by the gas temperature. Industrial applications of RF plasma reactors require a high degree of homogeneity of the plasma in contact with the substrate. Reliable measurements of spatially resolved gas temperatures are, therefore, of great importance. The gas temperature can be obtained, e.g. by optical emission spectroscopy (OES). Common methods of OES to obtain gas temperatures from analysis of rotational distributions in excited states do not include the population dynamics influenced by cascading processes from higher electronic states. A model was developed to evaluate this effect on the apparent rotational temperature that is observed. Phase resolved OES confirmed the validity of this model. It was found that cascading leads to higher apparent temperatures, but the deviation (similar or equal to 25 K) is relatively small and can be ignored in most cases. This analysis is applied to investigate axially and radially resolved temperature profiles in an inductively coupled hydrogen RF discharge.
Resumo:
Aim: The aim of this study was to compare both the antimicrobial activity of terpinen-4-ol and tea tree oil (TTO) against clinical skin isolates of meticillin-resistant Staphylococcus aureus (MRSA) and coagulase-negative staphylococci (CoNS) and their toxicity against human fibroblast cells.
The effect of the stretching of PLA extruded films on their crystallinity and gas barrier properties
Resumo:
Nitric oxide can be stored in and produced from zeolites in a simultaneous and cooperative process
Resumo:
This article offers a typology of so-called blocking legislation and analyses its development, functions and legality under international law. It also presents and discusses the new Russian blocking Order, issued in September 2012, focusing on its possible effects on the European Commission's investigation of Gazprom's business practices (in light of EU competition law) as well as, more broadly, on foreign operations of Russian strategic enterprises.