Decolonizing energy justice from the ground up: Political ecology, ontology, and energy landscapes

The purpose of the paper is to expand the concept of energy justice by considering the struggles over coloniality and cultural identity in the Global South and their interactions with the spatial and historical development of energy systems and the ongoing forms of energy transitions. The article argues that the current conceptualizations of energy justice cannot be separated from the politics of incumbency as, without a decolonial critique, they tend to reproduce rather than transform hegemonic power relations. To be transformative, energy justice must be articulated from the politics of actually existing unsustainability. In other words, the starting position for energy justice must be that energy injustices are already embedded in existing energy systems and energy policies. Drawing on Latin-American decolonial thought, and the work of political ecologists around energy, this article advocates looking beyond a universalized conception of justice towards an approach where justice is based on a sense of place and is informed by the community’s relationship with the land. Using the concept of energy landscapes, the article puts forth an alternative way of understanding energy systems and conceptualizations of justice in decolonial settings

Decolonizing energy transitions. The political economy of low-carbon infrastructure, justice, extraction and post-development in the Southeast of Mexico.

This thesis examines socioecological and onto-epistemic conflicts over low-carbon infrastructure in Yucatan, Mexico. Focusing on how energy systems and policies reconfigure landscapes and vice versa, it offers an expanded view of the broader social, political, historical, economic and environmental implications of such a transformation at different scales. It argues that the reconfiguration of landscapes is mediated by a capitalist drive towards the exploitation of so-called superabundance of 'renewable energy potential' where othered territorial relationships are made invisible or seen as ‘waste’ as they are tied-in to a particular epistemology of development. This thesis draws on the analysis of Critical Political Ecology on energy transitions, on the decolonial turn and the rise of extractivism in Latin America and on the work of political ecology and ontology, which has open broader questions about how certain notions such as ‘energy’, ‘transitions’ and ‘justice’ are understood. Drawing on these contributions, this thesis argues that geographers and critical scholars must pay closer attention to low-carbon infrastructure and the transition process, not only transcending the limited and simplified fossil fuel vs. renewable energy dichotomy that shapes the hegemonic energy transition, but in their analysis of how energy systems operate around Eurocentric and universal formulations of knowledge, power and being. The thesis seeks to make a contribution to how researchers, activists and policy-makers engage with the notion of energy justice arguing for a pluriversal and relational understanding of energy and of the process of transforming energy systems

Combined technique as first approach in mechanical thrombectomy: Efficacy and safety of REACT catheter combined with stent retriever

Acute stroke; Endovascular treatment; Mechanical thrombectomyAccidente cerebrovascular agudo; Tratamiento endovascular; Trombectomía mecánicaAccident cerebrovascular agut; Tractament endovascular; Trombectomia mecànicaIntroduction Mechanical thrombectomy (MT) with combined treatment including both a stent retriever and distal aspiration catheter may improve recanalization rates in patients with acute ischemic stroke (AIS) due to large vessel occlusion (LVO). Here, we evaluated the effectiveness and safety of the REACT aspiration catheter used with a stent retriever. Methods This prospective study included consecutive adult patients who underwent MT with a combined technique using REACT 68 and/or 71 between June 2020 and July 2021. The primary endpoints were final and first pass mTICI 2b-3 and mTICI 2c-3 recanalization. Analysis was performed after first pass and after each attempt. Secondary safety outcomes included procedural complications, symptomatic intracranial hemorrhage (sICH) at 24 h, in-hospital mortality, and 90-day functional independence (modified Rankin Scale [mRS] 0–2). Results A total of 102 patients were included (median age 78; IQR: 73–87; 50.0% female). At baseline, median NIHSS score was 19 (IQR: 11–21), and ASPECTS was 9 (IQR: 8–10). Final mTICI 2b-3 recanalization was achieved in 91 (89.2%) patients and mTICI 2c-3 was achieved in 66 (64.7%). At first pass, mTICI 2b-3 was achieved in 55 (53.9%) patients, and mTICI 2c-3 in 37 (36.3%). The rate of procedural complications was 3.9% (4/102), sICH was 6.8% (7/102), in-hospital mortality was 12.7% (13/102), and 90-day functional independence was 35.6% (36/102). Conclusion A combined MT technique using a stent retriever and REACT catheter resulted in a high rate of successful recanalization and first pass recanalization in a sample of consecutive patients with AIS due to LVO in clinical use

Granulocytes-Rich Thrombi in Cerebral Large Vessel Occlusion Are Associated with Increased Stiffness and Poorer Revascularization Outcomes

Acute stroke; Flow cytometry; Mechanical thrombectomyIctus agut; Citometria de flux; Trombectomia mecànicaIctus agudo; Citometría de flujo; Trombectomía mecánicaWe aim to identify a profile of intracranial thrombus resistant to recanalization by mechanical thrombectomy (MT) in acute stroke treatment. The first extracted clot of each MT was analyzed by flow cytometry obtaining the composition of the main leukocyte populations: granulocytes, monocytes, and lymphocytes. Demographics, reperfusion treatment, and grade of recanalization were registered. MT failure (MTF) was defined as final thrombolysis in cerebral infarction score IIa or lower and/or need of permanent intracranial stenting as a rescue therapy. To explore the relationship between stiffness of intracranial clots and cellular composition, unconfined compression tests were performed in other cohorts of cases. Thrombi obtained in 225 patients were analyzed. MTF were observed in 30 cases (13%). MTF was associated with atherosclerosis etiology (33.3% vs. 15.9%; p = 0.021) and higher number of passes (3 vs. 2; p < 0.001). Clot analysis of MTF showed higher percentage of granulocytes [82.46 vs. 68.90% p < 0.001] and lower percentage of monocytes [9.18% vs.17.34%, p < 0.001] in comparison to successful MT cases. The proportion of clot granulocytes (aOR 1.07; 95% CI 1.01–1.14) remained an independent marker of MTF. Among thirty-eight clots mechanically tested, there was a positive correlation between granulocyte proportion and thrombi stiffness (Pearson’s r = 0.35, p = 0.032), with a median clot stiffness of 30.2 (IQR, 18.9–42.7) kPa. Granulocytes-rich thrombi are harder to capture by mechanical thrombectomy due to increased stiffness, so a proportion of intracranial granulocytes might be useful to guide personalized endovascular procedures in acute stroke treatment.Open Access Funding provided by Universitat Autonoma de Barcelona. This work was supported by “Project 355/C/2017, Fundació La Marató de TV3 in Strokes and Traumatic Spinal Cord and Brain Injury, 2017 Call of Projects.

Petro-populism and infrastructural energy landscapes: The case of Mexico’s Dos Bocas Refinery

In 2018, recently elected presidential candidate Andres Manuel Lopez Obrador (AMLO) promised the construction of a new refinery in Mexico. Arguing a lack of energy independence and the urgent need to ‘rescue’ petro-state giant PEMEX and the stateowned electricity company CFE from the mismanagement and neoliberal policies of previous administrations, the Dos Bocas Refinery (DBR) became one of the main flagship projects of AMLO’s administration symbolizing a discourse of energy security and national pride. This paper reviews the process of approval and construction of the refinery by assessing, the material and relational character of energy infrastructure, the “politics and poetics” that are built into the promises of infrastructure projects, and the shifting temporalities of infrastructure and their interaction with emerging ‘petropopulist landscapes’ which serve as material evidence of oil-led development. Drawing on Anthropology's and Geography’s ‘infrastructural turn’, this paper reviews a series of government documents, speeches and declarations supported by interviews with energy experts to understand the symbolic meaning of energy infrastructure and how the DBR has become deeply entangled with a nationalist political project which has instituted an inertial path-dependence towards the continued use of fossil fuels, off-staging other concerns associated to climate change and the energy transition at the national level