Results 191 to 200 of about 512,547 (364)

Chemical and Structural Degradation of Single Crystalline High‐Nickel Cathode Materials During High‐Voltage Holds

open access: yesAdvanced Energy Materials, EarlyView.
The study explores degradation of high‐nickel NCM cathodes during prolonged high‐voltage holds, revealing a novel non‐linear increase in charge transfer resistance (RCT) due to an inhomogeneous, resistive surface reconstruction layer (SRL). Detailed analyses uncover the gradual growth and non‐uniformity of the SRL, which causes constriction effects ...
Kilian Vettori   +10 more
wiley   +1 more source

Use of Tele Dentistry in Orthodontic Patients During the Covid Pandemic

open access: yesJournal of Islamic International Medical College
Objective: This study was aimed to assess the impact of tele dentistry on bracket breakage and orthodontic plaque index during the covid pandemic. Study Design: An experimental study. Place and Duration of Study : The study was conducted from 1st April
Sadia Naureen   +2 more
doaj   +1 more source

Discerning Performance Bottlenecks of State‐of‐the‐Art Narrow Bandgap Organic Solar Cells

open access: yesAdvanced Energy Materials, EarlyView.
This work quantitatively discerns the loss mechanisms of state‐of‐the‐art low‐bandgap organic solar cells based on BTPV‐4X‐eC9 acceptors. Compared to PM6:Y6, geminate recombination of charge transfer (CT) states governs photocurrent losses. This relates to conformational freedom of these acceptors that restricts their aggregation, and also counteracts ...
Atul Shukla   +19 more
wiley   +1 more source

ASSESSMENT OF BRACKET BOND FAILURE DURING FIXED ORTHODONTIC TREATMENT BASED ON A QUESTIONNAIRE DISTRIBUTED TO ORTHODONTISTS

open access: yesRomanian Journal of Oral Rehabilitation
Introduction. The aim of this study was to evaluate the frequency of bracket bond failure and to identify the risk factors as well as the most frequently affected teeth. A secondary objective of the study was to establish whether white spot lesions (WSL),
Manuela Nardin   +7 more
doaj   +1 more source

How did consumers change their grocery spending in response to changes in Supplemental Nutrition Assistance Program benefit generosity?

open access: yesApplied Economic Perspectives and Policy, EarlyView.
Abstract In this paper, we examine the impact of reducing Supplemental Nutrition Assistance Program (SNAP) benefits on grocery purchases using data from Circana. We use an imputed difference‐in‐difference model to exploit state‐level variation in decisions to remove pandemic‐era SNAP emergency allotments to estimate the impact of such policies. We find
Kassandra Martinchek   +3 more
wiley   +1 more source

The Role and Impact of Rooftop Photovoltaics in the Norwegian Energy System under Different Energy Transition Pathways

open access: yesAdvanced Energy and Sustainability Research, EarlyView.
This study investigates the impact and cost‐competitiveness of rooftop solar power in a highly hydropower‐driven northern energy system toward 2050. The role of rooftop photovoltaics (PV) is assessed under different energy transition pathways and through a sensitivity analysis aiming to disclose important barriers to PV investments in the energy system.
Stine Fleischer Myhre, Eva Rosenberg
wiley   +1 more source

Synthesis of Pt Carbon Aerogel Electrocatalysts with Multiscale Porosity Derived from Cellulose and Chitosan Biopolymer Aerogels via Supercritical Deposition for Hydrogen Evolution Reaction

open access: yesAdvanced Energy and Sustainability Research, EarlyView.
The synthesis of platinumcarbon aerogel electrocatalysts with multiscale porosity derived from biopolymer aerogels via supercritical deposition is presented. The electrocatalysts demonstrate similar overpotentials to commercial alternatives with significantly higher platinum loadings, while exhibiting superior stability due to enhanced porosity ...
Ala Alsuhile   +6 more
wiley   +1 more source

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