Results 41 to 50 of about 590 (141)
Gongye shui chuli, 2020 高锰酸盐指数是一个相对性的条件指标，不同的条件因素都会影响其测定结果。为找出准确测定高锰酸盐指数的方法，从实验用水、加热时间、高锰酸钾标准溶液的浓度、反应体系的酸度以及滴定条件的控制等方面进行分析，提出测定高锰酸盐指数的最佳条件，并指出测定过程中的注意事项，对准确测定高锰酸盐指数具有重要意义。
李兰芳 +4 more
doaj +2 more sources
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT Silicon oxide (SiO) is becoming the main anode for high‐energy lithium‐ion batteries because of its ease of manufacture, outstanding cycling stability, and high capacity. However, low initial Coulombic efficiency (ICE) caused by the irreversible reaction of silica, as the main issue, strictly limits its commercial applications.
Hailong Mei +5 more
wiley +1 more source
Dianci bileiqi, 1992 以过硫酸铵—银盐氧化锰和铬直接利用锰的显色液对铬显色,分别用锰的高锰酸光度法和铬的二苯基碳酰二肼光度法测定棕釉中共存的锰和铬,方法简便快速,准确可靠.
周顺宇
doaj
Jingshui jishu【目的】针对水厂生产废水锰污染现状，本文旨在解决浓缩池上清液回用导致的配水井原水锰超标问题。【方法】利用石灰碱化排泥水，本文探究不同石灰投加量、pH条件下锰离子去除效果以及投加石灰对排泥水沉降性能的影响，并把所得结论运用于生产实践。【结果】利用石灰碱化排泥水能够有效去除排泥水中的锰离子，石灰投加量越大，锰离子去除效果越好，石灰投加质量浓度为75 mg/L时，排泥水pH值由7.13升至9.20,上清液锰离子质量浓度由4.30 mg/L降至0.25 mg/L,锰离子去除率高达94.2 ...
Wei Jiangang +4 more
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Porous Mn2O3@C Cathode With High Activity and Long Lifespan for Aqueous Zinc Ion Batteries
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Manganese‐based oxides are widely employed as cathode materials for aqueous zinc ion batteries (AZIBs) due to their low toxicity and high theoretical specific capacity. However, their inherent poor electrical conductivity, coupled with the dissolution of manganese into the electrolyte, often leads to structural degradation of the cathode.
Cheng‐Jie Yin +5 more
wiley +1 more source
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Weakening the electrostatic attraction between Mg2+ ions and H− ions in MgH2 is vital for improving the kinetic performance of MgH2 for hydrogen storage. Herein, a multivalent microenvironment is synergistically created by Mn and Mg2Ni to break the stable structure of MgH2, enabling rapid and stable de/hydrogenation performance.
Ya‐Ke Wu +7 more
wiley +1 more source
Functional Ecology, Volume 39, Issue 10, Page 2889-2904, October 2025.Read the free Plain Language Summary for this article on the Journal blog. Abstract In the Southwest Australian Biodiversity Hotspot, the greatest plant species diversity tends to occur on the most phosphorus (P)‐impoverished soils. Many plant species in this P‐impoverished environment release root carboxylates that mobilise soil P which is a more ...
Xue Meng Zhou +5 more
wiley +1 more source
Functional Ecology, Volume 39, Issue 2, Page 635-652, February 2025.Read the free Plain Language Summary for this article on the Journal blog. Abstract Invasive plants are a major cause of the global biodiversity crisis; it is therefore crucial to understand mechanisms that contribute to their success. South‐western Australia is a global biodiversity hotspot with extremely low soil phosphorus (P) concentrations.
Dan Tang +7 more
wiley +1 more source
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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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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