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The purpose of this study was to evaluate the effects of an individual work system on student task engagement, prompts needed for task completion, and the accuracy in task completion for three students with ASD in a special education classroom in China. Three students with ASD (two girls and one boy, ages 8-9) participated in this study. A multiple-probe across participants design was used. The students independently practiced the tasks acquired during pre-experimental training in a 10 to 15-min independent work session each day. The work system was implemented for 18 days during school days until all three students maintained stable performance at a high level in their task engagement. Results indicated that task engagement was improved, teacher prompts required for task completion were reduced, and accuracy in task completion was increased for all three students, as a result of the introduction of the individual work system. Such improvements were maintained at least 1 week following the completion of the intervention.

Exploring the dynamic structural evolution of electrocatalysts during reactions represents a fundamental objective in the realm of electrocatalytic mechanism research. In pursuit of this objective, we synthesized PhenPtCl2 nanosheets, revealing a N2-Pt-Cl2 coordination structure through various characterization techniques. Remarkably, the electrocatalytic performance of these PhenPtCl2 nanosheets for hydrogen evolution reaction (HER) surpasses that of the commercial Pt/C catalyst across the entire pH range. Furthermore, our discovery of the dynamic coordination changes occurring in the N2-Pt-Cl2 active sites during the electrocatalytic process, as clarified through in situ Raman and X-ray photoelectron spectroscopy, is particularly noteworthy. These changes transition from Phen-Pt-Cl2 to Phen-Pt-Cl and ultimately to Phen-Pt. The Phen-Pt intermediate plays a pivotal role in the electrocatalytic HER, dynamically coordinating with Cl- ions in the electrolyte. Additionally, the unsaturated, two-coordinated Pt within Phen-Pt provides additional space and electrons to enhance both H+ adsorption and H2 evolution. This research illuminates the intricate dynamic coordination evolution and structural adaptability of PhenPtCl2 nanosheets, firmly establishing them as a promising candidate for efficient and tunable electrocatalysts. Exploring the dynamic structural evolution of electrocatalysts during electrochemical reactions is imperative. Here, the authors constructed 2D PhenPtCl2 nanosheets with Phen-Pt-Cl2 coordination structure which exhibit dynamic coordination evolution during hydrogen evolution reaction and good performance across the full pH range [ABSTRACT FROM AUTHOR]

Summary: Petal senescence is the final stage of flower development. Transcriptional regulation plays key roles in this process. However, whether and how post‐transcriptional regulation involved is still largely unknown. Here, we identified an ethylene‐induced NAC family transcription factor DcNAP in carnation (Dianthus caryophyllus L.). One allele, DcNAP‐dTdic1, has an insertion of a dTdic1 transposon in its second exon. The dTdic1 transposon disrupts the structure of DcNAP and causes alternative splicing, which transcribes multiple domain‐deleted variants (DcNAP2 and others). Conversely, the wild type allele DcNAP transcribes DcNAP1 encoding an intact NAC domain. Silencing DcNAP1 delays and overexpressing DcNAP1 accelerates petal senescence in carnation, while silencing and overexpressing DcNAP2 have the opposite effects, respectively. Further, DcNAP2 could interact with DcNAP1 and interfere the binding and activation activity of DcNAP1 to the promoters of its downstream target ethylene biosynthesis genes DcACS1 and DcACO1. Lastly, ethylene signalling core transcriptional factor DcEIL3‐1 can activate the expression of DcNAP1 and DcNAP2 in the same way by binding their promoters. In summary, we discovered a novel mechanism by which DcNAP regulates carnation petal senescence at the post‐transcriptional level. It may also provide a useful strategy to manipulate the NAC domains of NAC transcription factors for crop genetic improvement. [ABSTRACT FROM AUTHOR]