Imaginaries of adaptation are currently dominated by technocratic, homogenous, top-down approaches that hinder sustainable, just, and effective adaptation worldwide. We have identified three practices that contribute to this problem: (1) an assumption of universality in adaptation; (2) a neglect of pluralistic knowledge systems and values; and (3) an oversimplification of adaptation processes. These three practices have been found to lead to reproductions of vulnerabilities, unsustainable outcomes, or ephemeral changes.
View Article and Find Full Text PDFThe emergence of nature-based solutions (NbS) in science, policy, and practice signals a paradigmatic shift in urban climate change adaptation, yet empirical investigations into its impact on adaptation definitions and progress tracking remain scarce. Addressing this gap, we conducted thematic analysis on semi-structured interviews (n = 15) with practitioners responsible for implementing and evaluating urban NbS in different countries. We provide a nuanced understanding of urban adaptation goals within urban NbS according to the insights from these practitioners, extending beyond hazard mitigation and towards cultivating and strengthening relationships between humans and nature.
View Article and Find Full Text PDFACS Appl Mater Interfaces
May 2020
Screening new electrocatalysts is key to the development of new materials for next-generation energy devices such as fuel cells and electrolyzers. The counter electrodes used in such tests are often made from materials such as Pt and Au, which can dissolve during testing and deposit onto test electrocatalysts, resulting in inaccurate results. The most common strategy for preventing this effect is to separate the counter electrode from the test material using an ion-transporting Nafion membrane.
View Article and Find Full Text PDFProtic ionic liquids (PILs) are ionic liquids that are formed by transferring protons from Brønsted acids to Brønsted bases. While they nominally consist entirely of ions, PILs can often behave as though they contain a significant amount of neutral species (either molecules or ion clusters), and there is currently a lot of interest in determining the degree of "ionicity" of PILs. In this contribution, we describe a simple electroanalytical method for detecting and quantifying residual excess acids in a series of ammonium-based PILs (diethylmethylammonium triflate [dema][TfO], dimethylethylammonium triflate [dmea][TfO], triethylammonium trifluoroacetate [tea][TfAc], and dimethylbutylammonium triflate [dmba][TfO]).
View Article and Find Full Text PDFElectrolytic water splitting could potentially provide clean H for a future "hydrogen economy". However, as H and O are produced in close proximity to each other in water electrolyzers, mixing of the gases can occur during electrolysis, with potentially dangerous consequences. Herein, we describe an electrochemical water-splitting cell, in which mixing of the electrogenerated gases is impossible.
View Article and Find Full Text PDFImperforate anus is an uncommon congenital anomaly. Colon atresia is even more infrequent. This report describes a newborn with the simultaneous occurrence of these 2 anomalies, a condition that is exceedingly rare.
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