2,519 research outputs found
Semi-quantitative characterisation of binary salt mixtures with static secondary ion mass spectrometry (S-SIMS)
Static secondary ion mass spectrometry (S-SIMS) for the characterization of surface components in mineral particulates
Re-thinking residential mobility
While researchers are increasingly re-conceptualizing international migration, far less attention has been devoted to re-thinking short-distance residential mobility and immobility. In this paper we harness the life course approach to propose a new conceptual framework for residential mobility research. We contend that residential mobility and immobility should be re-conceptualized as relational practices that link lives through time and space while connecting people to structural conditions. Re-thinking and re-assessing residential mobility by exploiting new developments in longitudinal analysis will allow geographers to understand, critique and address pressing societal challenges
The use of time-of-flight static secondary ion mass spectrometry imaging for the molecular characterization of single aerosol surfaces
Comparison of Ga+ and SF5+ primary ions for the molecular speciation of oxysalts in static secondary ion mass spectrometry (S-SIMS)
PIXE and ToF-SIMS analysis of streaker samplers filters
This paper presents methodological innovations introduced in the characterisation of urban aerosol collected in Italy in a recent campaign. Two complementary ion beam analysis (IBA) techniques were used to analyse Nuclepore filters used in continuous streaker samplers to collect airborne particles in four Italian towns. Na to Pb elemental concentrations were obtained by particle induced X-ray emission (PIXE), while time of flight secondary ion mass spectrometry (ToF-SIMS) produced, on the same samples, time trends for several elements and molecular fragments. In addition, light attenuation measurements were used as a tracer for black carbon. The data produced by these three techniques was merged into a unique data set to address the characterisation of particulate matter sources. Correlations between elemental concentration trends (PIXE) and relative trends for molecular fragments (ToF-SIMS) and black carbon (light attenuation) have been studied by cluster and principal component analysis
Intelligence, impulsivity and attention in the course and nature of delinquent behavior:Results of the Pittsburgh Youth Study
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