Results 21 to 30 of about 17,411 (196)
É pique, é pique-bandeira fração
Instrumento: Revista de Estudo e Pesquisa em Educação, 2021 Este estudo tem como objetivo narrar a experiência da aplicação do jogo pique-bandeira fração construído a partir da perspectiva interdisciplinar entre as disciplinas Matemática e Educação Física em turmas do 5º ano do Ensino Fundamental de uma instituição federal de ensino.
Joycimar Lemos Barcellos Zeferino +1 more
openaire +2 more sources
Effect of Slag with Different Alkalinity on Sulfide in 42CrMoS4 Steel [PDF]
TeshugangIn order to study the influence of different refining processes on sulfides in ring gear steel 42CrMoS4 steel， starting from the morphology and distribution of sulfides in the steel， two different alkalinity slag and calcium content processes were ...
Wang Xuji, Pan Xiquan, Yang Genchao, Huang Zhenhua
doaj +1 more source
Rare Metals, Volume 45, Issue 10, October 2026.ABSTRACT With the depletion of energy resources and the vigorous development of renewable energy technologies, the demand for efficient energy storage technologies has become increasingly urgent. Dielectric ceramics feature ultrafast charge–discharge speed, but low energy density and inferior efficiency hinder device miniaturization.
Junxuan Liu +14 more
wiley +1 more source
甘氨酸修饰大孔纤维素微球的制备及其对Cr3+、Fe3+的吸附研究
Gongye shui chuli, 2011 以碳酸钙固体颗粒为致孔剂，采用热熔胶转化再生纤维素法制备了大孔纤维素微球，并用甘氨酸修饰成阳离子吸附剂，以Cr3+、Fe3+为模型组分考察了该新型吸附剂的吸附性能。采用扫描电子显微镜对吸附剂的结构性能进行了表征，并探讨了吸附时间、初始浓度、温度、pH 对吸附性能的影响。结果表明，吸附在270 min 达到平衡，对Cr3+、Fe3+的饱和吸附量分别为52.5、48.9 mg/g，吸附过程可用Freundlich 等温方程拟合。
李江 +4 more
doaj +2 more sources
Rare Metals, Volume 45, Issue 10, October 2026.ABSTRACT Sodium‐ion batteries (SIBs) offer a promising, cost‐effective alternative for large‐scale energy storage due to the abundance of sodium. However, their practical deployment is challenged by sluggish interfacial kinetics and unstable interphase formation, which severely limit performance across wide temperature ranges. Here, we demonstrate that
Mingxing Zhang +10 more
wiley +1 more source
Gongye shui chuli, 2022 厌氧氨氧化工艺作为一种经济高效的新型生物脱氮技术，近年来受到了极大的关注。然而厌氧氨氧化菌世代周期长、对生存环境敏感、容易受抑制等诸多问题导致厌氧氨氧化工艺启动时间长及运行稳定性差，限制了其在实际废水处理中的应用。有效的厌氧氨氧化强化措施有望解决这一问题。介绍了国内外关于厌氧氨氧化强化途径的研究进展，重点评述了无机碳、铁元素、物理场（如电场、磁场、超声波等）在强化厌氧氨氧化菌生长代谢、加速厌氧氨氧化工艺启动以及提升工艺脱氮效能方面的可行性及潜在机理。分析认为 ...
李天皓 +5 more
doaj +2 more sources
Rare Metals, Volume 45, Issue 9, September 2026.ABSTRACT Vanadium‐bearing solid wastes (VBSWs) have emerged as a key research priority in resource recovery and environmental remediation because of their high resource value, large generation volume, and complex phase composition. However, practical utilization of these wastes still faces major challenges, including heavy environmental burdens, ill ...
Bowen Duan +7 more
wiley +1 more source
Enhanced Oxygen Reduction Reaction Performance of Fe‐N4 Single‐Atom Catalysts Through Fe3C Coupling
Rare Metals, Volume 45, Issue 9, September 2026.ABSTRACT Understanding the electronic factors contributing to the high oxygen reduction reaction (ORR) activity of Fe‐N4 sites remains a significant challenge due to the localized Fe 3d orbitals and their sensitivity to the coordination environment.
Shichang Cai +19 more
wiley +1 more source