Fouling Mitigation of Ion Exchange Membranes in Energy Conversion Devices

In this study, three different environmentally friendly fouling mitigation technologies are suggested and are investigated in reverse electrodialysis (RED) to develop the most appropriate fouling mitigation technology for RED: applying direct current, flowing a solution with high salt concentration, and periodically switching river and seawater streams in RED. The quantitative level of anion exchange membrane fouling mitigation is evaluated in terms of the power density and the amount of power generation of RED. Applying a direct current electric field with higher voltage than 8 V was not allowed for fouling mitigation in the two-cell-pair bench RED stack due to decomposition of the redox couple. In comparison of the RED operations with two different fouling mitigation methods using firstly 40-min power generation during in-operation and 40-min fouling mitigation stage during out-of-operation as a cycle for 80 min and secondly 80-min forward power generation and 80-min backward power generation as two cycles. It was found that, over five cycles, the amount of the RED power generation using the former fouling mitigation method is 1.7 times higher than RED power generation using the latter fouling mitigation method.

Narrating the Territorial Foundations of Privilege: Racial Discourse and Indigenous Peoples

This article focuses on the cultural narratives underlying U.S. society’s racialized inequalities. Informed by settler colonial theory and Charles Tilly’s work on “durable inequality,” I outline a privilege narratives framework that centers the dual mechanisms of racial dispossession that construct white supremacy’s material foundations: (1) the exploitation of non-Indigenous bodies and (2) the opportunity hoarding of Indigenous resources. I argue that these complementary, yet divergent, mechanisms shape distinctive patterns in contemporary racial discourse. In contrast to color-blind racism’s ahistoric and spatially disembedded storylines, the hoarding of Indigenous resources requires narrations that historically legitimate the dominant culture’s territoriality. Thus, in comparison with other racialized groups, racial discourse surrounding Indigenous peoples remains rooted in the defense of the territorial foundations of white property. Empirical support for the theoretical framework is provided through a sample of purposive follow-up interviews of non-Indigenous bystanders with historical connections to the American Indian Movement’s (AIM) “Red Power” activism in the 1970s.

Three Shades of Red: Power of Symbols or Soviet Legacy in Contemporary Inner Asian Capitals

The paper focuses on Soviet symbols in Inner Asian capitals and the conflicts around socialist legacy. We analyze Ulaanbaatar, Kyzyl, and Ulan-Ude as three different models of transformation of political symbols in urban space. All three capitals in their names contain the word “red” semiotically associated with communist ideology. Correspondingly, we see three different models of symbolic struggle for urban space. Theoretically, the paper is based upon the model of symbolic politics. Empirically, the research is based on materials of our own observations, discourse analysis of media, and official municipal documents. In general, the research is an analysis of symbolic practices of power in the conditions of a number of complex changes in Inner Asia.

ENTREVISTA COM JOE HORSE CAPTURE

Joe Horse Capture é membro da nação A’aniiih (Montana). É especialista nas culturas dos povos indígenas da região dos Great Plains na América do Norte e tem mais de vinte anos de experiência como curador em museus norte-americanos. Atualmente é Vice-Presidente das Coleções Indígenas e Curador de História e Cultura Nativas Americanas no Museu Autry, em Los Angeles, California. Durante os meses de dezembro de 2019 e janeiro de 2020, Joe foi pesquisador convidado do Centro de Pesquisa em Cultura Material, em Leiden, Holanda. Ali, além de trabalhar na preparação de uma exposição sobre arte e cultura dos povos nativos da América do Norte, Joe também deu palestras e concedeu a presente entrevista. Nela, ele fala sobre a questão da representação e auto-representação indígena nos museus norte-americanos numa perspectiva histórica. Trata do movimento Red Power nos Estados Unidos na década de 1970; do impacto da legislação NAGPRA na década de 1990; e dos novos modelos de curadoria indígena e curadoria compartilhada que atualmente estão sendo desenvolvidos em museus por todo o mundo.