Effects of Iron Impurities and Content on Electrochemical Performance and Oxygen Evolution Selectivity of Nickel Catalysts for Ethanol Oxidation.

Although performance enhancements due to trace Fe incorporation into Ni catalysts for the oxygen evolution reaction (OER) have been well documented, the effects of trace versus bulk Fe incorporation into Ni catalysts for the ethanol oxidation reaction (EOR)─a promising anodic alternative to OER─are unclear. Herein, we perform extensive cyclic voltammetry experiments on Ni-based thin films to show that trace Fe incorporation from electrolyte impurities has a minimal impact on EOR performance, while codeposited Fe significantly suppresses catalytic current (by half at 1.5 V).

A dataset of Antarctic ecosystems in ice-free lands: classification, descriptions, and maps.

Antarctica, Earth's least understood and most remote continent, is threatened by human disturbances and climate-related changes, underscoring the imperative for biodiversity inventories to inform conservation. Antarctic ecosystems support unique species and genetic diversity, deliver essential ecosystem services and contribute to planetary stability. We present Antarctica's first comprehensive ecosystem classification and map of ice-free lands, which host most of the continent's biodiversity.

Validity, reliability and clinical utility of ASSIST-Y in assessing risk of substance-related harm and dependence in Spanish male adolescents.

Background: Substance use among adolescents is strongly associated with adverse physical, mental health, and social outcomes. Prevention and early intervention can reduce the likelihood of future problems, but requires valid and reliable screening tools capable of assessing risk across a range of substances. This study assessed the validity, reliability, and clinical utility of the Alcohol, Smoking and Substance Involvement Screening Test (ASSIST-Y) for adolescents aged 15-17 years.

Sphere transgressions: reflecting on the risks of Big Tech expansionism.

The rapid expansion of Big Tech companies into various societal domains (e.g., health, education, and agriculture) over the past decade has led to increasing concerns among governments, regulators, scholars, and civil society.

Sphere transgressions in medical research: tactical engagements with Apple's ResearchKit.

In the last decade, large technology companies have started many initiatives to stimulate and innovate in the sphere of medical research. A prominent example is the ResearchKit software framework launched by tech giant Apple in 2015. This software framework enables medical researchers to develop research apps on the iPhone that collect and access diverse types of research data.