Results 211 to 220 of about 2,159,130 (277)

Achieving sustainable and durable concrete using high‐volume SiO2: Engineering properties, environmental and economic benefits

open access: yesStructural Concrete, EarlyView.
Abstract This study explores the potential of high‐volume amorphous silica (SiO2) replacement for ordinary Portland cement (OPC) in concrete to reduce carbon emissions. Amorphous SiO2, such as silica fume (SF) and CO2 mineralization‐produced Si‐rich gel, offers superior properties to concrete but is under‐researched for its use in concrete with high ...
Xinlin Ji, Lijie Chen, R. K. L. Su
wiley   +1 more source

Understanding STEM Coursetaking Among English Learner Subgroups: Longitudinal Evidence From Four State Policy Contexts

open access: yesTESOL Quarterly, EarlyView.
Abstract Although a substantial body of research documents the problem of course tracking for students classified as English learners (ELs), very little work has addressed the notably different challenges that subgroups of ELs face across different state policy contexts.
Kristin E. Black   +7 more
wiley   +1 more source

A South African Language Teacher Educator's Reflective Journey Through Sociocultural Theory and Asset‐Based Mediation

open access: yesTESOL Quarterly, EarlyView.
Abstract This reflective article chronicles a South African English as a Medium of Instruction (EMI) university teacher educator's journey from professional disillusionment toward a more intentional, transformative praxis. The catalyst for this journey was the recurring observation of novice teachers abandoning dialogic, asset‐based pedagogies learned ...
Nhlanhla Mpofu
wiley   +1 more source

Forest and fire drive moose (deníe) detections near their northern range limit

open access: yesWildlife Biology, EarlyView.
One way to understand species range shifts in response to anthropogenic climate change is to study populations living at the limit of climate and resource suitability. Moose Alces alces (deníe in Dënesųłıné) generally require forest–wetland landscape complexes but are increasingly seen across the forest–tundra transition at their northern range limit ...
Claudia A. Haas   +3 more
wiley   +1 more source

Surface Micro‐Discharge Plasma for Multiple Teeth Bleaching: Efficacy, Mechanism and Safety

open access: yesHigh Voltage, EarlyView.
ABSTRACT Hydrogen peroxide (H2O2) is the commonly‐used bleaching chemical in clinical practice, but its excessive concentrations can cause tooth damage. Atmospheric pressure cold plasma is considered a promising new technique for tooth bleaching. Surface micro‐discharge (SMD) devices can generate large‐scale plasma, which holds potential for treating ...
Ruike Chen   +7 more
wiley   +1 more source

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