Results 21 to 30 of about 6,857 (205)
Shuitu Baochi Xuebao, 2006 研究了酸度对土壤溶液中铜形态的影响以及不同形态铜与黑麦草吸收及其生长的关系。结果表明：酸度强烈地影响土壤溶液中铜的化学形态，随着酸度的增加，土壤溶液中各种形态铜的含量包括水溶态铜、离子态铜及与易溶有机物结合的铜都相应增加，而且随处理铜浓度的增加不同酸度土壤上的差异更大。酸度能影响黑麦草对铜的吸收，随酸度的增加，黑麦草对铜的吸收增加。其中在对照及低铜处理中两种土壤的差异不显著，而在处理铜浓度高于50mg／kg以后两种土壤上的黑麦草铜含量差异都达显著水平。黑麦草的生长随土壤酸度的增加而变差 ...
李文庆, 张民, 束怀瑞
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Rare Metals, Volume 45, Issue 9, September 2026.ABSTRACT Pyritum can eliminate blood stasis and promote the healing of muscles and bones, which has been used as a traditional mineral medicine in China for thousands of years. However, the mechanisms of action and processing methods of Pyritum were not illustrated.
Mingxia Li +8 more
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Gongye shui chuli, 1987 一、前言冶金部建筑研究总院环保所为天津铜丝铜网厂含铜锌重金属离子废水进行了完整的治理，取得良好效果。该厂废水主要来源是清洗铜丝表面氧化物产生的废酸洗液和漂洗铜丝的漂洗水。废酸洗液包括磷铜废液和黄铜废液，这部份废液的铜锌离子浓度高达几万毫克/升。
姜玉兰
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Rare Metals, Volume 45, Issue 9, September 2026.ABSTRACT The performance optimization of ultrahigh‐strength Cu‐15Ni‐8Sn alloy relies on controlling recrystallization and aging precipitation, which are two thermally activated processes constrained by high activation barriers. Conventional heat treatment requires elevated temperatures and prolonged holding time, inevitably leading to grain coarsening ...
Fei Tan +10 more
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Accessing Ultra‐Nano Phase‐Separated Metallic Glasses via Cryogenic Cycling
Rare Metals, Volume 45, Issue 9, September 2026.ABSTRACT Phase separation offers a promising avenue to mitigate the inherent brittleness of metallic glasses. However, traditional approaches relying on mixing enthalpy face significant challenges, primarily due to the detrimental impact on glass‐forming ability.
Huaping Ding +15 more
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Shuitu Baochi Xuebao, 2007 以棕壤为供试土壤,采用室内土柱淋溶模拟试验方法,研究了相当于泰安平均年降水量条件下铜在土壤垂直方向上的迁移转化特征.结果表明:各处理土壤中的铜在0～10 cm土层中均有不同程度的迁移转化.土壤铜含量越高,年降水量条件下表层土壤中铜的淋失量越大,沉淀态铜和矿物残留态铜所占的比例增加了28.57%～33.49%.高铜土壤中,钙含量的增加使交换态铜比例降低幅度为9.97%～10.48%,使铜的迁移量最大可减少15.54%;随褐煤施入量的增加,表层交换态铜含量减少,铜向5～10 cm土层中的淋溶量减少显著 ...
王立仙 +3 more
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Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Although alloy‐based materials present potential for peroxymonosulfate (PMS) activation, metal ion leaching remains severely restricted during the pollution degradation process. Herein, the porous carbon‐supported Fe–Cu alloy derived from industrial copper slag was prepared to remove the organic pollutants from wastewater while inhibiting the ...
Xuanren Chen +10 more
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A cross-efficiency aggregation method based on fairness perspective(基于公平视角的交叉效率集结方法)
Zhejiang Daxue xuebao. Lixue banAiming at the aggregation problem of cross-efficiency in data envelopment analysis (DEA), this paper proposes a new regret cross-efficiency aggregation method based on fairness perception.
张兴贤(ZHANG Xingxian) +4 more
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