Results 11 to 20 of about 1,186 (96)
A Review on Cu‐Based Catalysts for Dehydrogenation of Chemical Hydrides
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Hydrogen (H2) plays a crucial part in the building of clean and sustainable energy systems due to its advantages of being renewable, clean, and pollution‐free. Nevertheless, the secure and effective production‐storage‐transportation of H2 presents critical challenges.
Yixing Luo +6 more
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Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT The growing concern over human health issues, driven by increasingly severe electromagnetic pollution from 5G communication, has made the urgent development of high‐performance electromagnetic wave (EMW) absorbing materials. Although carbide‐based materials are promising because of their conductive and polarization losses, existing single ...
Chenqiang Duan +9 more
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Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT The electrocatalytic reduction of nitrate (NO3ER) has emerged as a promising strategy for mitigating NO3− ${{\text{NO}}_{3}}^{-}$ pollution in wastewater while concurrently producing value‐added ammonia; however, its process is significantly hindered by the lack of highly efficient and low‐cost electrocatalysts. Herein, we proposed several non‐
Xue‐Shi Song +5 more
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Functional Ecology, Volume 39, Issue 4, Page 1096-1111, April 2025.Read the free Plain Language Summary for this article on the Journal blog. Abstract Many invasive plant species have demonstrated a better ability to tolerate and accumulate heavy metals than their co‐occurring native plants. Given the potential biological toxicity of heavy metals to phytopathogens, we postulated that heavy metal contamination could ...
Tiantian Lin +7 more
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Wildlife Letters, Volume 2, Issue 1, Page 44-59, March 2024.The sea turtle flipper tagging technique: is a tenet management technique generating continuous scientific data worldwide since over a century. presents a very low risk of expression of a fibropapillomatosis lesion at the tag insertion point correlated to a direct inoculation of ChHV5 via infected tagging equipment, and a risk of entanglement in ...
Claire Saladin, Daniela Freggi
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Shuitu Baochi Xuebao, 2008 对昆承湖9个采样点柱状沉积物中主要重金属元素(Pb,Cu,Zn,Cd,Cr)的垂向分布进行了测定,结果表明,5种重金属元素具有非常相似的垂向变化特征,表现为随沉积深度增加含量降低的态势;横向上表现为靠近污染源的含量高,远离污染源的含量低。各重金属元素均与TOC之间呈显著正相关关系,表明沉积物中重金属污染受人类活动作用较为明显。地积累指数评价结果显示,Zn污染最重,且污染主要集中在表层;潜在生态风险性指数反映出全湖沉积物中的重金属污染属于中等生态危害程度,Cd是最主要的生态危害元素 ...
王天阳, 王国祥
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Shuitu Baochi Xuebao, 2006 取白洋淀底泥制成3种不同厚度的基质种植芦苇，另外设置不含底泥的麦地土壤和旱地芦苇土壤，定期对基质采样，测定底泥中重金属Cu，Cd，Pb，Zn浓度并进行比较分析。试验表明，底泥和供试麦地土壤和芦苇土壤已受到重金属Cu，Cd，Pb，Zn不同程度污染；Cd浓度均已超过全国土壤质量三级标准，分别为1．35～1．59mg／kg和1．078～1．16mg／kg，污染程度严重。其次为Pb和Zn，Cu为轻微污染。随着芦苇的生长，底泥和麦地及芦苇土壤中大部分重金属浓度呈不同程度下降趋势 ...
滑丽萍 +4 more
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Shuitu Baochi Xuebao, 2006 通过对东北地区污染农田黑土剖面的取样调查分析，对重金属Cd、Ph、Cu、Zn在农田黑土中的污染状况及其迁移特征进行了对比研究，并就BCR（the Community Bureau of Reference）连续提取法在农田土壤重金属污染评估中的应用进行了探讨。结果表明，重金属的迁移率大小依次为：Cd〉Cu〉Pb〉Zn，Cd的酸可溶态占全量的比率高于其它重金属。Pb的酸可提取态浓度随土壤深度增加而增大，公路附近土壤中PL、Cu及城市郊区土壤中Cd、Pb和Zn的氧化物结合态含量均随土壤深度的增加而升高 ...
曹会聪, 王金达, 张学林
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Dianci bileiqi, 2023 输电线路表面存在金属污染物容易导致闪络现象，影响线路正常运行。目前针对线路污染物的检测，主要是在断电期间采样后，通过元素分析对样品进行离线检测，影响经济运行。针对此，笔者提出一种基于激光诱导击穿分析的金属污染物在线检测方法(LIBS),该方法具有无样品制备、几乎无损、速度快等优点。通过优化多种LIBS参数(激光能量和延迟时间),可获取更好的光谱数据分辨率，对金属污染物类型的辨识度更高；然后，结合校正曲线法和偏最小二乘回归法检测金属污染物的种类和质量分数。通过实验测试表明，本研究提出方法能准确、直接 ...
段家振
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Shuitu Baochi Xuebao, 2006 通过野外调查和采样分析，研究了浙江衢州铅锌矿区土壤的微生物、土壤酶活性及植物重金属积累特性。结果表明：矿区污染区土壤Ph、Zn、Cd、Cu全量的平均值分别是对照土壤的267．8倍、132．6倍、41．8倍、17．0倍。矿区植物体内重金属含量与土壤重金属全量和有效态含量呈显著正相关。矿区土壤随着重金属含量的增加，土壤微生物生物量碳逐渐降低，而土壤基础呼吸、微生物代谢商则升高，矿区中心污染土壤微生物生物量碳只有对照土壤的72％，而基础呼吸和微生物代谢商分别是对照土壤的1．6倍和2．3倍 ...
张玲, 叶正钱, 李廷强, 杨肖娥
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