Results 21 to 30 of about 2,161 (160)
Gongye shui chuli, 2015 通过分子前驱体Zn[Biedta]2·8H2O热分解得到Zn-Bi-O三元复合氧化物,采用XRD、漫反射光谱、FT-IR等方法探索灼烧时间对复合氧化物的结构和性质的影响。同时以甲基橙的光降解为模型研究了灼烧时间对复合物催化性能的影响。结果表明,灼烧时间对复合物物相、吸光度、催化效果等均存在影响。制备的复合物对甲基橙光降解均具有不同程度的催化能力,其中灼烧2 h所得复合物的催化效果最好,在中性环境中,对20 mg/L的甲基橙而言添加量2 g/L为最佳,光照3 h的褪色率达90%。
张鹏飞 +4 more
doaj +2 more sources
Dianci bileiqi, 1975 提高绝缘子金属附件热镀锌层均匀性,对延长绝缘子的使用寿命是有好处的。在批林批孔运动的推动下,我们对提高热镀锌层均匀性的问题进行了研究,已初见成效。实践证明,提高热镀锌层均匀性的关键在于工艺方法的改进。我厂旧的热镀锌工艺的特点是：(1)镀锌温度高,一般在550—600℃; (2)在锌液中加铝,增加锌液的流动性和提高锌层表面的光泽;(3)不使用"助镀溶剂",酸洗烘干后立即镀锌;(4)锌层镀后没有冷却就用"卡"、"墩"的方法除掉表面的积锌。这就使锌层薄而不均匀,致使锌层硫酸铜试验次数很低 ...
大连电瓷厂
doaj
“Agro é tech, agro é pop, agro é tudo”?
Revista TamoiosO objetivo deste artigo é apresentar um panorama dos conflitos pela água produzidos e intensificados pelo agronegócio em Minas Gerais entre os anos de 2002 e 2022, a partir do aporte teórico-metodológico da Ecologia Política. Para tanto, foi desenvolvida uma pesquisa qualitativa, de caráter descritivo.
José Vitor Palhares dos Santos +2 more
openaire +1 more source
Rare Metals, Volume 45, Issue 9, September 2026.ABSTRACT Lithium metal anode and zinc metal anode have attracted considerable attention owing to their high theoretical capacity, low electrochemical potential, and superior electronic conductivity. However, their practical applications are greatly hindered by inherent issues such as uncontrollable dendritic growth and interfacial instability ...
Jing Wang +10 more
wiley +1 more source
Zhongshan Daxue xuebao. Yixue kexue ban, 2019 【目的】探究锌离子在动脉粥样硬化巨噬细胞泡沫化及斑块形成过程中的影响及其机制。【方法】用氧化低密度脂蛋白（oxLDL）刺激THP-1细胞建立巨噬细胞泡沫化模型，用油红O染色法检测在0、30和60μmol/L锌浓度环境下泡沫化程度，用荧光标记法检测巨噬细胞对脂质的吞噬情况，用免疫印迹法检测相关清道夫蛋白CD36、SR-A蛋白的表达，用实时荧光定量PCR检测锌离子转运体的mRNA相对表达量。用ApoE-/-小鼠随机分4组：正常饲料组（Chowgroup）、高脂缺锌组（HFD-ZnD）、高脂正常锌组（HFD）、
田甜, 周芳敏, 汤勇波
doaj
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT To address critical issues in lithium–sulfur batteries, such as slow polysulfide conversion kinetics and shuttle effects, we designed and synthesized a high‐performance nanoalloy catalyst through a defect reconstruction strategy, aiming to enhance the electrochemical performance of batteries.
Zhijun Zhao +10 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
doaj
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Ultrathin, lightweight, and mechanically compliant electromagnetic interference (EMI) shields are increasingly required for high‐frequency electronic devices. However, conventional metallic shields predominantly rely on conductivity‐driven reflection mechanisms, which become ineffective at reduced thickness and may cause severe secondary ...
Zida Zhang +7 more
wiley +1 more source
Shuitu Baochi Xuebao, 2018 通过水稻威优46盆栽种植试验，研究了外源Zn施用（0，40，80，160 mg/kg 4个水平）对Cd中度（0.72 mg/kg）和重度（5.26 mg/kg）污染土壤中Cd生物有效性及水稻Cd累积的差异。结果表明：施Zn对各检测指标存在影响，但土壤Cd总量仍是土壤Cd活性和水稻Cd累积差异变动的主控因素。在Cd中度污染土壤中，施Zn降低了土壤交换态Cd含量1.9%~17.0%，但水稻根表铁膜、根和糙米中Cd含量随Zn施用浓度的增大而增大，糙米Cd含量从0.09 mg/kg上升到0.17 mg/kg ...
辜娇峰 +5 more
doaj
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Biodegradable zinc (Zn)‐based materials are considered promising candidates for orthopedic applications because of their favorable mechanical properties, controllable biodegradability, and good biosafety profiles. However, their clinical translation is limited by early‐stage corrosion‐induced cytotoxicity and inflammation, as well as ...
Jinlong Mao +9 more
wiley +1 more source