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Operando XANES Reveals the Chemical State of Iron-Oxide Monolayers During Low-Temperature CO Oxidation

We have used grazing incidence X-ray absorption near edge spectroscopy (XANES) to investigate the behavior of monolayer FeO (Formula presented.) films on Pt(111) under near ambient pressure CO oxidation conditions with a total gas pressure of 1 bar. Spectra indicate reversible changes during oxidation and reduction by O (Formula presented.) and CO at 150 °C, attributed to a transformation between

Inventors among the Impoverished Sophisticate

This paper examines the identity and origins of Swedish inventors prior to WWI, drawing on the universe of patent records linked to census data. We document that the rise of innovation during Sweden's industrialization can largely be attributed to a small industrial elite belonging to the upper-Tail of the economic, educational, and social status distribution. Analyzing children's opportunities to

“You have exactly what it takes” : Two interventions for increasing women’s self-efficacy and belongingness in engineering

To increase women’s interest in STEM (Science, Technology, Engineering and Mathematics), interventions that target self-efficacy and belongingness are needed. For this purpose, this study designed and tested two interventions. In Study 1, we tested if a video with female role models increases young women’s expected belongingness and interest in engineering. In Study 2, we tested if positive feedba

New music for old instruments: the serpent (concert)

This concert featured the world premiere of new music for serpent from the composers Orlando Bass, Henrik Denerin, Athena Corcoran-Tadd, and Jesse Ronneau (the latter also with live electronics). The concert opened with a performance of a 17th-century work from Girolamo Frescobaldi with Orlando Bass on harpsichord. There was also a visual presentation, illustrating the history of the serpent and b

Unveiling the Kinetics of Accelerated Degradation in Polymer Electrolyte Fuel Cells

The polymer electrolyte fuel cells are electrochemical devices that can produce electricity, water, and heat through chemical reactions of hydrogen and oxygen. This manuscript focuses on one detailed state of degradation, called as Membrane Chemical Stability and Metrics. The Accelerated Stress Test under study was standardized by the Department of Energy. Recent advancements in the study of degra

The neuroethology of ant navigation

Unlike any other group of animals, all ant species are social: individual ants share the food they gather with their nestmates and as a consequence they must repeatedly leave their nest to find food and then return home with it. These back-and-forth foraging trips have been studied for about a century and much of our growing understanding of the strategies underlying animal navigation has come fro

An annotated high-content fluorescence microscopy dataset with EGFP-Galectin-3-stained cells and manually labelled outlines

Many forms of bioimage analysis involve the detection of objects and their outlines. In the context of microscopy-based high-throughput drug and genomic screening and even in smaller scale microscopy experiments, the objects that most often need to be detected are cells. In order to develop and benchmark algorithms and neural networks that can perform this task, high-quality datasets with annotate

Exploring relationships between time of day and pollinator activity in the context of pesticide use

Pesticide exposure can be harmful to insect pollinators and the ecosystem services they provide. As many pesticide guidelines warn against applying such products when pollinators are active, it is important to evaluate how pollinator activity changes with time of day to determine the most appropriate time to spray.We walked transects from sunrise to sunset in oilseed rape (Brassica napus L.) field

Lithography-Free Water Stable Conductive Polymer Nanowires

Free-standing nanowires can gain intracellular access without causing stress or apoptosis. Current approaches to generate nanowires focus on lithographic patterning and inorganic materials (Si, GaAs, Al2O3, etc.) while organic materials are less explored. Use of organic conductive polymers allows for the creation of soft mixed ion–electron conducting nanowires. Processing conductive polymers into

Extremal structures with embedded prefailure indicators

Preemptive identification of potential failure under loading of engineering structures is a critical challenge. Our study presents an innovative approach to design built-in prefailure indicators within multiscale structural designs with optimized load carrying capabilities utilizing the design freedom of topology optimization. The indicators are engineered to visibly signal load conditions approac

Grain-scale stress heterogeneity in concrete from in-situ X-ray measurements

Concrete features significant microstructural heterogeneity which affects its mechanical behavior. Strain localization in the matrix phase of concrete has received significant attention due to its relation to microcracking and our ability to quantify it with X-ray computed tomography (XRCT). In contrast, stresses in sand and aggregates remain largely unmeasured but remain critical for micromechani

Low-level viremia in people with HIV in Ethiopia is associated with subsequent lack of viral suppression and attrition from care

BACKGROUND: Low-level viremia during antiretroviral therapy (ART) has been associated with inferior outcomes, but knowledge on the impact of low-level viremia in the current era of dolutegravir-based ART in low-income countries is limited.OBJECTIVE: To investigate whether low-level viremia predicts virologic non-suppression and attrition from care in people with HIV receiving ART in Ethiopia.METHO