Results 31 to 40 of about 13,629 (214)
RURIS (Campinas, Online), 2015 Este ensaio tem o objetivo de apresentar um fragmento da etnografia sobre o conhecimento naturalístico dos pescadores artesanais da Carrasqueira – pequeno povoado localizado na costa central portuguesa. O material etnográfico, produzido entre os anos de 2010 e 2011, expõe como os pescadores carrasqueiros denominam alguns dos seres que constituem a ...
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Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Magnesium (Mg)‐based composites are regarded as promising lightweight materials with significant potential for structural applications. The structure–property relationships of bionic Mg‐based composites remain unclear. Herein, three honeycomb‐like Mg‐Fe composites are fabricated to uncover the underlying strengthening mechanisms.
Fan Zhang +5 more
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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
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Psicologia USP, 2006 O artigo analisa a influência das concepções tradicionais da Psicologia nas falas de educadores e alunos sobre o fracasso escolar na atualidade. Para tanto, faz uma breve revisão da psicometria e da teoria da carência cultural como representantes da concepção ideológica que centra no indivíduo e no "ambiente" as causas do fracasso.
Asbahr, Flávia da Silva Ferreira +1 more
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Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Atomically dispersed iron–nitrogen–carbon (Fe‐N‐C) catalysts have emerged as promising alternatives for oxygen reduction reaction (ORR) owing to their highly atomic utilization. However, maintaining both Fe atomic dispersion and dense Fe‐Nx sites (typically below 2 wt%) in Fe‐N‐C catalysts is still a key challenge.
Lijuan Wang +6 more
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Sociologias Plurais, 2012 Comumente, em referência a atletas de futebol, evoca-se uma masculinidade tradicional (BONINO, 2008), definida como modelo social hegemônico. No presente artigo, refletir-se-á sobre a chamada "área reservada masculina" (MAGUIRE & DUNNING, 1997), considerada como relevante à manutenção das estruturas patriarcais. A partir de coberturas jornalísticas
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Cognitive Science, Volume 50, Issue 5, May 2026.Abstract Although psycho‐/neuro‐linguistics has assumed a distinction between morphological and syntactic structure building as in traditional theoretical linguistics, this distinction has been increasingly challenged by theoretical linguists in recent years.
Xinchi Yu +3 more
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, 1994 本文对铁浴煤氧喷射气化反应机理进行了理论分析和实验考察。结果表明，射流氧首先使铁氧化成中间产物ＦｅＯ，并弥散分布于熔铁中，中间产物ＦｅＯ液滴进而被溶解碳和熔池内煤气泡中ＣＯ及Ｈ＿２还原，最终生成以ＣＯ和Ｈ ...
郭占成，王大光，许志宏
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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
Investigating the Origin of Topological‐Hall‐Like Resistivity in Zn‐Doped Mn2Sb Ferrimagnet
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Skyrmions and other chiral spin textures have been extensively studied as potential building blocks for novel spintronic devices. Hall‐resistivity anomalies that deviate from magnetization scaling, known as the topological Hall effect, have been widely employed as evidence for the presence of chiral spin textures in magnetic materials. However,
BoCheng Yu +9 more
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