Search results for "composition"

NOx selective catalytic reduction at high temperatures with mixed oxides derived from layered double hydroxides

2012

[EN] Mixed oxides derived from layered double hydroxides (LDHs) have been investigated as potential catalysts for the NOx removal at high temperatures. The best results were obtained with Co–Al mixed oxides derived from LDHs that are active at 750 ◦C in the presence of oxygen and water. These catalysts could reduce or/and decompose the NOx formed in the dense phase of the FCC regenerator, being deactivated at oxygen concentrations higher than 1.5%. Nevertheless this deactivation is not permanent and they would be regenerated after reduction with hydrogen at 530 ◦C. The influence of the layered double hydroxides (LDHs) preparation method on the catalyst activity was studied, observing that t…

Organic solvent-soluble contents of nickel and cobalt in some algae

1990

In pursuit of our work on metal contents of lipid fractions isolated from plant material, we now show by means of highly sensitive analytical methods that nickel and cobalt are also present in organic extracts of algae in detectable amounts

Analysis of Prey Composition in Eurasian Reed Warblers' Acrocephalus scirpaceus Droppings at Four Breeding Sites in Italy

2022

Our aim was to investigate the among-populations diversity of prey composition in Eurasian Reed Warblers’ diets via their droppings, both to assess the ecological validity of this sampling method and to test whether the prey species most abundant in fecal samples were also the most present in the Italian study site. We collected fecal samples at four sites throughout Italy, for a total of 144 samples. Within reedbeds, the breeding habitat of the Eurasian Reed Warbler, we also collected arthropods by carrying out entomological sweepings at one of the study sites. Within the fecal samples, we identified dozens of prey species, belonging mainly to Araneae, Coleoptera, Diptera, Hymenoptera and …

Effect of legume grains as dietary protein source on the quality of organic lamb meat

2011

The Dynamics of Currency Substitution: Evidence from UK Foreign Currency Balances

2006

This study evaluates the magnitude of the permanent and the transitory components of currency substitution in the UK. The results indicate that the permanent component, the ratchet effect, accounted only for a small share while the aggregate temporary component, speculation, whose impact lasts about one month, was responsible for most of the dynamics of UK currency substitution. The findings thus lend support to the view that at worst currency substitution would only cause short-run problems for the UK economy.

Environmental context determines pollution impacts on ecosystem functioning

2023

Global change assessments have typically ignored synthetic chemical pollution, despite the rapid increase of pharmaceuticals, pesticides and industrial chemicals in the environment. Part of the problem reflects the multifarious origins of these micropollutants, which can derive from urban and agricultural sources. Understanding how micropollutants harm ecosystems is a major scientific challenge due to asymmetries of stress across trophic levels and ecological surprises generated by multiple drivers interacting in human-impacted landscapes. We used field assays above and below municipal wastewater treatment plants (WWTPs) in 60 sampling locations across 20 Swiss streams to test how micropoll…

Somatosensory change detection in young healthy twin males

2013

Towards an Economy of Encounters? : A critical study of affectual assemblages in coworking

2017

Abstract Coworking spaces have been established in great numbers around the globe over the past 10 years. Previous studies on coworking spaces argue that these spaces are designed to enable serendipitous encounters. Here we introduce the concept of an economy of encounters, arguing that both intended and unintended encounters have become a form of production in the knowledge-based new economy. This paper draws upon the critical analysis of three case studies of different coworking settings − two open coworking spaces and a corporate coworking office. Following Deleuze and Guattari, we see coworking spaces as affectual assemblages that create affects that push knowledge workers in flow and m…

Ocena działalności Trybunału Konstytucyjnego

2019

Niniejszy artykuł stanowi próbę opisu funkcjonowania Trybunału Konstytucyjnego w Polsce oraz ocenę tej działalności przez społeczeństwo. Przedstawiono pokrótce charakterystykę powołania do życia tego organu w Polsce, a następnie zaprezentowano jego podstawowe kompetencje. Opisano także skład i organy Trybunału. W ostatniej części skupiono się na analizie oceny Trybunału Konstytucyjnego przez Polaków w ostatnich 17 latach, od samego początku przeprowadzania badań na ten temat. Trybunał nigdy nie cieszył się nadmiernym zaufaniem wśród polskiego społeczeństwa, co pokazuje jak wiele pracy organ ten musi wykonać, aby przekonać do siebie Polaków (choćby tych, którzy w swej ocenie są niezdecydowan…

Interpreting the decomposition of gender earnings gap

2010

In this paper we discuss a decomposition of the gender monthly earnings differential into three components: the first is due to differences in individual characteristics, the second is due to discrimination and the last to the differential in hours worked. The Oaxaca-Blinder hourly wage decomposition is perfectly integrated into the decomposition of the monthly earnings gap. In order to evaluate the effects of this components on the monthly earnings gap, we calculate counterfactual earnings gaps, estimating what would happen if various aspects relating to the two genders were equal (for example, educational level), and then we compare these with the empirical earnings gap. The aim of the co…