Results 21 to 30 of about 7,089 (155)
Zhejiang Daxue xuebao. Lixue ban, 2007 讨论了以TAN为衍生试剂，用Triton X-114非离子表面活性剂浊点萃取富集铁（Ⅱ )、钴（Ⅱ )、镍（Ⅱ )的各种条件，并于ODS柱上，用内含4.5 m mol • L-1十六烷基三甲基溴化铵(CTMAB)和0.03 mol • L-1 pH5.5HAc-NaAc缓冲溶液的甲醇/水溶液（体积比为69 ： 31）作流动相，检测波长为565 nm，流速为0.8 mL • min-1，发展了浊点萃取-高效液相色谱法测定铁、钴、镍的新方法.在选定条件下，大多数离子不干扰测定，方法灵敏度高，对铁、钴 ...
XIEXia-feng(谢夏丰) +2 more
doaj +1 more source
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Metal nanoclusters provide abundant catalytically active sites and unique electronic structures that are highly beneficial for enhancing photocatalytic performance; however, their practical application is often hindered by poor photostability.
Yiying Qin +6 more
wiley +1 more source
Glycerophosphocholine‐Mediated Dual Regulation for Highly Stable Aqueous Iron‐Ion Batteries
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Iron‐ion batteries (FeIB) offer the advantages of low cost and high capacity, demonstrating potential for large‐scale energy storage. However, severe hydrogen evolution reaction (HER) occurs during cycling, which significantly impacts battery lifespan.
Tian Yang +6 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 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
Gongye shui chuli, 2008 建立了吸附溶出伏安法同时测定痕量铜、铁的方法。以邻苯二酚为配合剂，哌嗪-1，4-双(2-乙烷磺酸)(PIPES)为缓冲溶液，在最优条件下，对铜离子的测量范围为0～35μg/L，相关系数r=0.9994;对铁离子的测量范围为0～30μg/L，相关系数r=0.9980。两者的检测限分别为0.069、0.407μg/L。此法应用于电站锅炉用水中痕量铜、铁的测定，回收率分别为103.6%和104.7%。说明该法不仅灵敏度高、准确性好，而且操作简单、快速。
王义壮, 侯冀川
doaj +2 more sources
Arquivos Catarinenses de Medicina, 2022 Introdução: dispositivos e soluções em telessaúde e telemedicina desempenharam papel fundamental nas estratégias de assistência à saúde alinhadas à redução da transmissão viral no contexto da pandemia de COVID-19. Objetivo: identificar, caracterizar e analisar as iniciativas de telessaúde criadas e utilizadas pelo Sistema Municipal de Saúde do ...
Raphaella Tambosetti Dias +2 more
openaire +1 more source
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Rationally designing an electrocatalyst to achieve stable and efficient urea oxidation reaction (UOR) is crucial but still challenging, especially for ampere‐level application. Herein, Mn and Fe dual‐doped Ni0.85Se (Mn/Fe–Ni0.85Se) catalyst is synthesized via a facile and scalable electrodeposition and followed by selenization.
Guanglin Zhu +6 more
wiley +1 more source