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Free, publicly-accessible full text available November 2, 2026
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Free, publicly-accessible full text available October 23, 2026
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Free, publicly-accessible full text available September 3, 2026
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ABSTRACT This study centers the idea that it is not just what science teacher educators (STEs) teach, but how they teach it, that matters. To prepare future teachers who can enact more equitable and transformative reform‐oriented science instruction with multilingual learners, research must explore what STEs are doing, and how, to develop preservice teachers' expansive views of language and understandings around the nuanced ways students might use their diverse language repertoires for sensemaking. Wanting to explore whether our instructional practices as STEs aligned to the translanguaging pedagogy we espouse within our bilingual elementary science methods course, we employed self‐study methodology to critically examine our own instruction across a semester, specifically in terms of how we engaged in the core practice of “eliciting student ideas.” Findings revealed particularities around the evolution of our translanguaging pedagogy with respect to this core practice, the extensive and intentional effort that went into designing learning activities strongly suited to facilitate our elicitation of PSTs' ideas in language‐expansive ways, and the vulnerable space that we had to hold, as individuals and as a collective, in order to (un)learn and carry out this work. These findings highlight the importance of STEs addressing their own continued professional growth, and of the power of collaboration in supporting this growth through self‐examination and loving self‐critique. Furthermore, findings suggest the importance of intentionally eliciting and elevating PSTs' ideas both implicitly and explicitly, and for needing to attend to the emotional and relational aspects of learning environments to support students' language use.more » « lessFree, publicly-accessible full text available December 14, 2026
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Free, publicly-accessible full text available February 25, 2026
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Summary It has been 60 years since the discovery of C4photosynthesis, an event that rewrote our understanding of plant adaptation, ecosystem responses to global change, and global food security. Despite six decades of research, one aspect of C4photosynthesis that remains poorly understood is how the pathway fits into the broader context of adaptive trait spectra, which form our modern view of functional trait ecology. The C4CO2‐concentrating mechanism supports a general C4plant phenotype capable of fast growth and high resource‐use efficiencies. The fast‐efficient C4phenotype has the potential to operate at high productivity rates, while allowing for less biomass allocation to root production and nutrient acquisition, thereby providing opportunities for the evolution of novel trait covariances and the exploitation of new ecological niches. We propose the placement of the C4fast‐efficient phenotype near the acquisitive pole of the world‐wide leaf economic spectrum, but with a pathway‐specific span of trait space, wherein selection shapes both acquisitive and conservative adaptive strategies. A trait‐based perspective of C4photosynthesis will open new paths to crop improvement, global biogeochemical modeling, the management of invasive species, and the restoration of disturbed ecosystems, particularly in grasslands.more » « lessFree, publicly-accessible full text available May 1, 2026
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The nano- and micron scale morphology of poly(3-hexylthiophene) (P3HT) and polystyrene-block-polyisoprene-block-polystyrene (PS–PI–PS) elastomeric blends is investigated through the use of ultra-small and small angle X-ray and neutron scattering (USAXS, SAXS, SANS). It is demonstrated that loading P3HT into elastomer matrices is possible with little distortion of the elastomeric structure up to a loading of ∼5 wt%. Increased loadings of conjugated polymer is found to significantly distort the matrix structure. Changes in processing conditions are also found to affect the blend morphology with especially strong dependence on processing temperature. Processing temperatures above the glass transition temperature (Tg) of polystyrene and the melting temperature (Tm) of the conjugated polymer additive (P3HT) creates significantly more organized mesophase domains. P3HT blends with PS–PI–PS can also be flow-aligned through processing, which results in an anisotropic structure that could be useful for the generation of anisotropic properties (e.g. conductivity). Moreover, the extent of flow alignment is significantly affected by the P3HT loading in the PS–PI–PS matrix. The work adds insight to the morphological understanding of a complex P3HT and PS–PI–PS polymer blend as conjugated polymer is added to the system. We also provide studies isolating the effect of processing changes aiding in the understanding of the structural changes in this elastomeric conjugated polymer blend.more » « less
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