Mostrando ítems 31-40 de 403
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Quasi-arithmetic means of covariance functions with potential applications to space-time data
The theory of quasi-arithmetic means represents a powerful tool in the study of covariance functions across space-time. In the present study we use quasi-arithmetic functionals to make inferences about the permissibility ...
A Symbol Digit Modalities Test version suitable for functional MRI studies
The Symbol Digit Modalities Test is an easy test used to assess cognitive impairment in a wide range of neurological diseases, like multiple sclerosis. We adapted the oral version of this cognitive task making it suitable ...
Rendering continuous level-of-detail meshes by Masking Strips
In this paper we present a new continuous multiresolution approach which has been developed for the interactive visualization of meshes in real-time applications. Our interest is to offer an efficient solution which considers ...
Cu2ZnSnS4 films deposited by a soft-chemistry method
Cu2ZnSnS4 films were deposited on glass substrates by the use of a printing technique. A series of different precursor materials was synthesized by a soft-chemistry route. Suspensions were prepared with or without the ...
Environmental risk index: A tool to assess the safety of dams for leachate
Dams for leachate store very toxic substances that contain a large amount of organic material and, probably, heavy metals; they therefore constitute an important threat to the environment. Existing models of environmental ...
Safety factor nomograms for homogeneous earth dams less than ten meters high
Homogeneous earth dams that are waterproofed with geomembranes are a suitable option for storing water and other sorts of liquids, like leachates from landfills. Such dams do not require complicated engineering technical ...
Dopamine/adenosine interactions involved in effort-related aspects of food motivation
Nucleus accumbens dopamine (DA) is involved in effort-related aspects of food motivation. Accumbens DA depletions reduce the tendency of rats to work for food, and alter effort-related choice, but leave other aspects of ...
Detection and structural investigation of metabolites of stanozolol in human urine by liquid chromatography tandem mass spectrometry
The applicability of LC-MS/MS in precursor ion scan mode for the detection of urinary stanozolol metabolites has been studied. The product ion at m/z 81 has been selected as specific for stanozolol metabolites without a ...
Are regional trading agreements beneficial?. Static and dynamic panel gravity models
This paper evaluates the effects of preferential agreements on trade between trade group members and non-members using a static and a dynamic gravity model. The gravity model is estimated using recent panel data techniques ...
Analysis of omeprazole and its main metabolites by liquid chromatography using hybrid micellar mobile phases
Omeprazole is a selective inhibitor of gastric acid secretion and is one of the most widely prescribed drugs internationally. A chromatographic procedure that uses micellar mobile phases of sodium dodecyl sulphate and ...