Results 41 to 50 of about 2,142 (160)
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT The development of high‐voltage aqueous zinc‐ion batteries (AZIBs) is primarily hindered by the lack of suitable cathode materials and electrolytes that can work in broad voltage windows. Herein, we propose a synergistic strategy that concurrently addresses these challenges through the integration of an amorphous vanadium oxyphosphate/graphene
Xianyu Liu +7 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
wiley +1 more source
Gongye shui chuli, 2007 在pH10.0的Na2B2O7-NaOH缓冲溶液中，非离子乳化剂OP存在下，6-硝基-苯并噻唑重氮氨基偶氮苯(NBTDAA)能与锌发生显色反应，据此建立了测定微量锌的新的光度法。结果表明，在实验条件下，NBTDAA与Zn(Ⅱ)反应生成2∶1稳定络合物，其最大吸收波长为510nm，表观摩尔吸光系数为5.75×104L/(mol·cm)。锌含量在0￣0.6mg/L内符合比尔定律。该方法用于测定电镀废水中微量锌,结果与5-Br-DMPAP光度法相符,6次测定值的RSD<4%。
罗道成, 刘俊峰
doaj +2 more sources
Shuitu Baochi Xuebao, 2006 采用室内模拟降雨淋溶土柱的方法，研究了经过1年降雨的淋溶后，菜园土壤垂直方向上各形态锌的迁移转化规律。结果表明：锌的大多数形态很难随水分运动发生迁移，～年的降雨至多能使占总量0．57％的水溶态锌发生淋溶损失。水分淋洗和施磷锌平均能使分别占总量3％和4％的难溶态RES—Zn和OX-Zn向易被植物利用的EX—Zn、CABS—Zn和OM—Zn形态转化。随施锌量的增加，土壤锌的有效性指数增加30％～78％．有效锌总量增加3．12～10．07mg／kg。当施磷50mg／kg时，土壤Zn的有效性指数增加3％～28％，
于素华 +3 more
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Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Piezocatalytic technology utilizes mechanical strain or stress‐induced piezoelectric phenomena to produce robust internal electric fields, markedly improving the separation efficiency of e−‐h+ pairs. This method has emerged as a focal point in catalysis by removing reliance on conventional light or electrical energy via its mechanical‐to ...
Yue Zhou +5 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2009 目的探讨锌对人前列腺癌PC-3M细胞侵袭能力的影响。方法用MTT比色法检测不同剂量锌对PC-3M细胞增殖的影响;Transwell小室检测锌对PC-3M细胞侵袭能力的影响;RT-PCR检测锌作用24 h后MMP-2、MMP-9 mR-NA的表达;酶谱分析检测锌作用后PC-3M细胞MMP-2、MMP-9的活性变化。结果MTT检测结果表明一定剂量的锌可抑制PC-3M细胞的生长;Transwell小室实验结果显示,锌作用下PC-3M细胞穿透Matrigel膜的细胞数减少;RT-PCR结果显示锌抑制了PC ...
汲坤 +7 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
openaire +2 more sources
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 4, April 2026.ABSTRACT The stability of aqueous Zn2+ batteries is severely hindered by parasitic reactions at the Zn anode/electrolyte interface. Herein, itaconic acid (IA) is introduced as an effective electrolyte additive to achieve a highly stable zinc anode. Remarkably, IA concurrently modulates both the zinc anode/electrolyte interfacial structure and the Zn2 ...
Chenggang Wang +5 more
wiley +1 more source
成年人发样中镁、铝、锌、铁、铜和锰元素水平检测及其与腹型肥胖的相关性分析
Zhongguo shiyan zhenduanxue, 2017 目的了解成年人发样中镁、铝、锌、铁、铜和锰元素水平,探讨各元素含量与腹型肥胖的相关性。方法采用随机整群抽样的方法,以问卷调查、体格检查和实验室检测（ICP-MS测定发样中镁、铝、锌、铁、铜和锰元素水平）相结合的方式,收集吉林省靖宇、东辽和长岭县657名成年人的有效数据。结果不同性别成年人发样中镁、铝、锌、铁和锰元素含量比较差异有统计学意义 ...
李卓 +5 more
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