Results 31 to 40 of about 11,823 (189)
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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特提斯喜马拉雅金锑铅锌多金属成矿带成矿流体特征:来自H-O同位素的约束
, 2019 特提斯喜马拉雅成矿带产出数十个规模不等的金矿、锑金矿、锑矿和铅锌多金属矿，近期的矿产勘查在片麻岩穹窿发现了铍稀有多金属矿床.该成矿带内发育两期金锑铅锌矿化，其一为以邦布金矿和马攸木金矿为代表的造山型金矿，形成于59~45 Ma，属于青藏高原造山主碰撞阶段的产物；其二为以姐纳各普金矿、车穷卓布锑矿、扎西康铅锌矿的晚期矿化和吉松铅锌矿等为代表的热液型矿化，集中形成于21~12 Ma的后碰撞造山阶段.大量的流体包裹体研究表明喜马拉雅金锑铅锌成矿带的成矿流体主要为中低温(小于300℃)、中低盐度流体(< 10%
梁维, Liang Wei
semanticscholar +1 more source
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
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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Gallium‐Doped α‐MnO2 Cathode for High‐Performance Aqueous Zinc‐Ion Batteries
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Rechargeable aqueous zinc‐ion batteries (ZIBs) have received significant attention because of their high safety and low cost. MnO2 as a cathode material hampers the application of ZIBs due to its structural instability and dissolution during the operation of the battery.
Wen‐yu Xu +13 more
wiley +1 more source
野生动物学报, 2009 在铜锌生物学作用基础上,阐述了毛皮动物对铜锌的营养需要,并根据国外的标准给出了适宜的推荐量;同时,针对毛皮动物铜锌缺乏的症状,分析其缺乏的可能原因及评价铜锌营养状况的方法;最后,结合铜锌比、铜锌超氧化物歧化酶说明铜锌两种微量元素在毛皮动物营养中的相互关系。
魏韬 +4 more
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Discursos Fotograficos, 2014 Resenha de: SILVA, Mylton Severiano da. Realidade - História da revista que virou lenda. Florianópolis: Editora Insular, 2013. 320 p.
openaire +3 more sources
川滇黔地区天宝山、会泽铅锌矿床成矿流体来源初探:来自流体包裹体及氦氩同位素的证据
, 2018 为限定川滇黔地区大型铅锌矿床成矿流体来源，选择天宝山大型铅锌矿床和会泽超大型铅锌矿床中热液矿物进行流体包裹体及氦氩同位素研究.结果显示：（1）天宝山矿床为中低温、中等盐度流体成矿，成矿流体主要来源于盆地卤水；会泽矿床为中高温、中等盐度流体成矿，成矿流体也主要来源于盆地卤水，但具有不同性质流体混合特征；（2）两矿床硫化物3He/4He值范围介于0.02~0.32 Ra，证明成矿流体以地壳流体为主，但混有少量（< 5.3%）地幔成分，40Ar/36Ar值（345.0~1 698.8 ...
王健 +11 more
semanticscholar +1 more source
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT The design of nanoparticles confined in hollow N‐doped carbon structures is crucial for improving the oxygen reduction reaction (ORR) kinetics, yet achieving this remains a significant challenge. In this work, hollow porous nitrogen‐doped carbon encapsulated FeP/Fe2P (H‐FeP/Fe2P) were successfully constructed via a templating method combined ...
Li‐Xia Wang +8 more
wiley +1 more source
Zhongshan Daxue xuebao. Yixue kexue ban, 2014 摘 要: 【目的】 研究以钙磷为基础的含锌?氟离子矿化液对牙釉质理化性能的影响?【方法】 将因治疗需要而拔除的成人第三磨牙牙冠制作成牙釉质切片?分别以含不同浓度氟离子和锌离子的钙磷饱和矿化液处理牙釉质切片,分为处理组:CaP-ZnF? CaP-F? CaP-Zn?CaP组和双蒸水DDW对照组?采用扫描电镜?X 射线衍射仪和红外光谱仪,检测矿化液处理组和对照组牙釉质切片的表面特性?【结果】 扫描电镜观察到经矿化液处理后的牙釉质切片表面有聚集的微晶沉积?X 射线衍射仪分析牙釉质表层沉积的羟基磷灰石晶体显示 ...
谷海晶
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