Results 21 to 30 of about 5,336 (213)
Synthesis and characterization of zinc glycinate monohydrate(一水合甘氨酸锌螯合物的合成及其表征)
Zhejiang Daxue xuebao. Lixue ban, 2008 简化了甘氨酸锌螯合物的合成，以甘氨酸和碱式碳酸锌为原料，按摩尔比为2 ： 1的比例在水相中合成，90~95 ℃间反应6 h，得到了产率为94.6%的水合甘氨酸锌螯合物.产品经纯化处理后用元素分析、红外光谱、紫外光谱、热重分析、粉末衍射等一系列方法进行表征.结果表明该螯合物是带一个结晶水的分子化合物，摩尔电导率为20.1 Scm2 • mol-1，稳定常数为2.29×105.另外用凝胶色谱法测定了该螯合物的螯合率，得螯合率为100%±1%.
GUANHai-yue(管海跃) +2 more
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Synthesis of ZnO micro-flowers assisted by plant-mediated strategy and their photocatalytic application [PDF]
, 2015 有机污染物中特别是染料，对人类生活和环境的不利影响，已经受到了社会的广泛关注。在半导体存在的条件下，光催化降解已成为一种除去染料污物的有效手段。许多不同的半导体已经被应用于光催化降解的过程中，其中，ZnO由于其吸附能力强、无毒性、高催化效率、带隙宽、化学稳定性、激子结合能大和廉价等特点，已经引起了研究者极大的关注。而上述性质决定了ZnO具有良好的光催化性质。氧化锌的光催化性能与其尺寸、表面积和形貌有关，因此ZnO的微/纳米结构合成和形貌控制备受关注。与传统的化学和物理方法相比 ...
WILLIAMS BROWN OSEI
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Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Chemically self‐charging aqueous zinc‐ion batteries (AZIBs) have emerged as promising candidates for energy storage technologies owing to their environmental autonomy and structural simplicity. Nonetheless, the self‐charging performance is significantly compromised by the limited potential difference between cathodes and oxygen, as well as the
Yan Wang +5 more
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Jixie chuandong, 1988 超高分子量的聚乙烯（UHWPE）锻件已经制成,采用了三种不同化合物,其性能试验表明了使用少量百分比的添加剂即能够改变试验结果。对另一种方法也作了研究,将树胶粉末放在微波（R-F）炉中加热,继而压制成型。在各种情况下,这种微波（R-F）加热技术能制得最佳的产品。
沈锌
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Studies on the Function of Genes Related to Zinc Accumulation of the Fujian Oyster Crassostrea angulata [PDF]
, 2015 牡蛎是我国重要的经济贝类，具有很高的营养价值和保健价值，牡蛎富含人体所需多种微量元素，尤其是锌含量十分丰富。牡蛎同一群体的不同个体间的锌含量有很大差别，但其分子机制迄今尚未阐明。本文研究了福建牡蛎（Crassostreaangulata）几种锌富集相关基因与锌富集的关系，研究结果可为解析牡蛎对锌的高富集及个体富集差异的分子机制提供新资料。主要研究结果如下： 1、利用cDNA末端快速扩增技术（rapid-amplicationofcDNAends，RACE）扩增福建牡蛎锌富集相关基因cDNA全长 ...
向旭
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Etnografia é, etnografia não é
Ilha Revista de Antropologia, 2017 Usando uma noção de "digital" como uma de suas metáforas principais, uma versão do termo que se apoia na discussão de Kara Keeling sobre o "humanismo digital", este texto argumenta que há algo sobre as não-linearidades que definem a diferença da digitalidade que pode nos ajudar a pensar sobre recalibragens no próprio projeto etnográfico.
Araujo, F. N., Jackson, John L.
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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
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Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Platinum (Pt)‐based catalysts are crucial for the commercialization of hydrogen/metal air batteries, but they suffer from Pt scarcity, high cost, and nanoparticle dissolution/agglomeration, mainly leading to performance degradation. We address this by synthesizing a PtFe alloy catalyst (PtFe–PA–NC) via a phytic acid (PA) assisted pyrolysis ...
Chenyang Shu +9 more
wiley +1 more source
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
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