Biological treatment of contaminated air with toluene in an airlift reactor

In this work the variation in the toluene elimination capacity of an airlift bioreactor as a function of the toluene inlet load, using compost as the support material for the microorganisms was studied. In order to evaluate the flexibility of the reactor under changing toluene load, the toluene biodegradation was measured for flows from 2.4 x 10-2 to 0.132 m3 h-1, and a concentration range from 1.4 to 0.8 g m-3. Results show a 100% removal efficiency (RE) for minor flows, however, for a flow increase of 450% the RE decreased 40%, reflecting the equipments weak flexibility in varying flows. Meanwhile the maximum elimination capacity obtained was 230 g m-3 h-1, for toluene loads of 550 g m-3 h-1, corresponding to a flow of 0.132 m3 h-1. It was found that a average biomass concentration in suspension of 3700 g m-3, reflected EC's of 203 g m-3 h-1

Учебно-исследовательская работа студентов в медицинском вузе

This book constitutes the refereed proceedings of the 11th IFIP WG 8.5 International Conference, EGOV 2012, held in Delft, The Netherlands, in September 2012. The 23 revised full papers presented were carefully reviewed and selected from more then 80 submissions. The papers are organized in topical sections on foundations; adoption and diffusion; open government and transformation; infrastructure and technology; evaluation; and citizen perspective, social inclusion, and social media.

Diversity of language ideologies in Spanish-speaking youth of different origins in Catalonia

To explore language attitudes and ideologies in urban Catalonia, focus group structured interviews were conducted with two groups of adolescents of Spanish-speaking origins: the Autochthonous group, descendents of mid-late twentieth century immigrants from other parts of Spain, and the Immigrant group, who came from Latin America. The Autochthonous group displayed a clear spectrum of six sets of language ideologies. At one extreme was ‘linguistic parochialism’ in support for Catalan entailing rejection of compromise with Spanish or the Spanish state. At the other was linguistic parochialism favouring Spanish, which was dismissive of Catalan linguistic and national aspirations. In the middle were ‘linguistic cosmopolitan’ attitudes favouring accommodation, bilingualism and diversity. This spectrum was coherent and ordered in that it consisted of different responses to political and socioeconomic facts in Catalonia. By contrast, the Immigrant group, though equally ideologically diverse, was inconsistent and betrayed little engagement with local political or socioeconomic realities. Instead, immigrants seemed more interested in maintaining their linguistic identity by avoiding dialectal influence from Peninsular Spanish. The findings contribute to our understanding of the development of language ideologies and attitudes in bilingual contexts and in particular the impact of immigration on bilingual societies