Microstructured catalytic hollow fiber reactor for methane steam reforming

Microstructured alumina hollow fibers, which contain a plurality of radial microchannels with significant openings on the inner surface, have been fabricated in this study and used to develop an efficient catalytic hollow fiber reactor. Apart from low mass-transfer resistance, a unique structure of this type facilitates the incorporation of Ni-based catalysts, which can be with or without the aged secondary support, SBA-15. In contrast to a fixed bed reactor, the catalytic hollow fiber reactor shows similar methane conversion, with a gas hourly space velocity that is approximately 6.5 times higher, a significantly greater CO2 selectivity, and better productivity rates. These results demonstrate the advantages of dispersing the catalyst inside the microstructured hollow fiber as well as the potential to reduce the required quantity of catalyst

The Consent Paradox: Accounting for the Prominent Role of Consent in Data Protection

The concept of consent is a central pillar of data protection. It features prominently in research, regulation, and public debates on the subject, in spite of the wide-ranging criticisms that have been levelled against it. In this paper, I refer to this as the consent paradox. I argue that consent continues to play a central role not despite but because the criticisms of it. I analyze the debate on consent in the scholarly literature in general, and among German data protection professionals in particular, showing that it is a focus on the informed individual that keeps the concept of consent in place. Critiques of consent based on the notion of “informedness” reinforce the centrality of consent rather than calling it into question. They allude to a market view that foregrounds individual choice. Yet, the idea of a data market obscures more fundamental objections to consent, namely the individual’s dependency on data controllers’ services that renders the assumption of free choice a fiction

“Qualifying peripheries” or “repolarizing the center”: A comparison of gentrification processes in Europe

7sinoneReflecting a broader form of neo-liberal urban policy underlying the progressive return of capital investment, gentrification is a key issue in urban studies. Although earlier definitions of “gentrification” focused mostly on socio-cultural processes, recent works have qualified gentrification as a mixed political–economic issue. Clarifying whether inner city gentrification should be supported, controlled, constricted, or prevented is a key debate in urban sustainability and metabolism, contributing to managing and, possibly, enhancing metropolitan resilience. To define the causes and consequences of gentrification, understanding the intrinsic linkage with different social contexts is crucial. There are no universal and comprehensive gentrification processes, displaying similarities and differences at the same time. A comparative analysis of different forms of gentrification and urban change provides basic knowledge to delineate complex, non-linear paths of socioeconomic development in cities, shedding light on the increased socioeconomic complexity and the most appropriate policies to fuel metropolitan sustainability in a broader context of global change. From this perspective, our commentary focuses on the main issues at the base of gentrification in Europe, starting from basic definitions and providing a regional vision distinguishing three “gentrification ideal-types” (northern, eastern, and Mediterranean). The implications of these different socioeconomic processes for the policy and governance of sustainable and resilient cities were discussed, evidencing new lines of investigation to frame (or re-frame) the increasing complexity of urbanization patterns and processes.noneNickayin S.S.; Halbac-Cotoara-zanfir R.; Clemente M.; Chelli F.M.; Salvati L.; Benassi F.; Morera A.G.Nickayin, S. S.; Halbac-Cotoara-zanfir, R.; Clemente, M.; Chelli, F. M.; Salvati, L.; Benassi, F.; Morera, A. G