532 research outputs found
Generalized oscillator strength for Na 3s-3p transition
Generalized oscillator strengths (GOS's) for the Na transition have
been investigated using the spin-polarized technique of the random phase
approximation with exchange (RPAE) and the first Born approximation (FBA),
focussing our attention on the position of the minimum. Intershell correlations
are found to influence the position of the minimum significantly, but hardly
that of the maximum. The RPAE calculation predicts for the first time the
positions of the minimum and maximum at momentum transfer, values of 1.258
a.u. and 1.61 a.u., respectively. The former value is within the range of
values extracted from experimental measurements, a.u.. We
recommend careful experimental search for the minimum around the predicted
value for confirmation.Comment: 11 pages, 2figure
Barriers to and enablers of sustainable practices: insights from ethnic minority migrants
Migration from the Global South to Global North is a major feature of contemporary population movements, and provides a lived experiment of the implications of moving from less resource-intensive modes of living towards more resource-intensive ones. Pre-migration practices come together in complex ways post-migration with established norms and infrastructures in destination countries. Here we examine the barriers to and enablers of sustainable practices, synthesising in-depth research from nine different studies in south-eastern Australia in relation to household water use, food growing and transport. The total sample includes 323 migrants from 33 countries. The main barriers include infrastructure and broader patterns of work and society. The main enablers are cultural norms of frugality and preferences for public transport. Barriers and enablers interact in diverse ways. We show that migrants are important contributors to inadvertent sustainabilities, but their contributions may be weakened by infrastructural, structural and cultural barriers. Addressing the diverse capacities of migrants would enhance system change for everyone
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