WASHINGTON — Nearly 30 former NASA astronauts have signed a letter endorsing Jared Isaacman as the agency’s next administrator, calling on the Senate to consider his nomination as soon as possible.
The letter, sent to the leadership of…
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Shocking Spherules! – NASA Science
Written by Alex Jones, Ph.D. candidate at Imperial College London
Last week the Perseverance Science Team were astonished by a strange rock comprised of hundreds of millimeter-sized spheres… and the team are now working hard to…
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Dynamic correlation analysis of sectoral electricity consumption and urban carbon concentration using machine learning models
Performance validation of the correlation model in different cities
The predictive performance of the correlation model varies across different cities (see Table 4), generally yielding favorable results. In several cities, such as City 1, City 2,…
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Reciprocal effects of vocabulary breadth, vocabulary depth, and reading comprehension: a cross-lagged panel analysis in Chinese-speaking EFL learners
The comprehension of written text, regardless of language, entails the utilization of a variety of linguistic processes, including accessing vocabulary, parsing grammatical structures, and constructing semantic representations (Grabe 2009; Koda
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Study of Z-scan technique, dispersion energy, and Wemple–DiDomenico model on Cu, Cr and Fe doped NiO nanopowder for the determination of nonlinear and linear optical characteristics
Structural studies
Figure 3a shows that all the synthesized samples possess a polycrystalline cubic structure. For both pristine and doped NiO samples, the diffraction peaks at 37.37°, 43.41°, 62.98°, 75.51°, and 79.50° are attributed to the…
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Distributional equality in Ethereum? On-chain analysis of Ether supply distribution and supply dynamics
This study employs a hypothesis-driven approach to empirically analyze the distribution and dynamics of ETH holdings. The analysis is divided into two parts. First, the status quo is analyzed by examining the current state of ETH distributions….
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Analysis of heavy metal ions (Pb, Hg, Cr, Cd, As) capture & detection based on quinoline probe binding data
Structural parameter
Figure 2 shows the structural optimization diagrams of the complexes formed after the Probe captures heavy—metal ions such as Pb, Hg, Cr, Cd, and As, specifically including Probe—Pb, Probe—Hg, Probe—Cr, Probe—Cd,…
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Power and marginalization in discourse on AI in education (AIEd): social actors’ representation in China Daily (2018–2023)
The results of this study are classified into three sections, each addressing one of the research questions: (1) the key social actors and their general representations in China Daily (RQ1); (2) the discursive strategies employed in the…
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Alloying hBN with aluminum influences absorption and electronic properties
Material composition
Fig. 1 Cross-sectional high-resolution transmission electron microscopy pictures for samples (a) Al0.02, (b) Al0.04, (c) Al0.07, (d) Al0.13. Carbon (C) and platinum (Pt) caps were deposited in lamella preparation process….
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A novel process of triple-passed CO2 methanation over gradient-coated spiral-structured Ni/CeO2 catalysts
Investigation of pristine CeO2 support and Ni/CeO2 catalyst
The crystal structure investigation
Figure 3 shows the employing of X-ray diffraction (XRD) to investigate the crystal phase information of pristine CeO2 supports along with Ni/CeO2…
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