Results 21 to 30 of about 5,854 (159)
Shuitu Baochi Xuebao, 2020 选取南方典型母质发育耕作土紫泥田和麻砂泥，通过添加不同浓度梯度的外源Cd （0，0.5，2.0，10.0，20.0 mg/kg）进行盆栽试验，并结合傅里叶红外与X射线衍射等手段，研究了象草在土壤Cd胁迫下的耐受能力及修复效果。结果表明：紫泥田与麻砂泥中象草对Cd的耐性指数为0.65~0.79，均表现出较好的耐性；外源Cd浓度为0，0.5，2.0 mg/kg时象草富集系数均大于1，表现出较好的Cd富集性；象草转运系数为0.60~0.84，属于非Cd超富集植物，但因地上部分生物量巨大 ...
覃建军 +6 more
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Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT The similar physicochemical properties of alkali metal elements make the co‐enrichment and precise separation of Cs+ and Rb+ in complex brine systems highly challenging. Here, an all‐inorganic strategy is proposed, which achieves efficient enrichment and precise separation of Cs+ and Rb+ in high‐salt systems by constructing Sr2+/Ba2+‐based ...
Kang Li, Ruixin Ma, Shina Li
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Petroleum Exploration and Development, 2010 Most oil fields in China are reservoirs with strong heterogeneity and relatively viscous crude in continental sediments. Due to the low waterflooding oil recovery factor, there is still a great potential to improve the oil recovery.
Han Dakuang
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, 1997 讨论了中亚热带武夷山先峰岭５１龄甜槠Ｃａｓｔａｎｏｐｓｉｓｅｙｒｅｉ（Ｃｈａｍｐ．ｅｘＢｅｎｔｈ．）Ｔｕｔｃｈ．群落的氮、磷元素的累积和循环．测定结果表明：群落现存量中含有的氮、磷总量分别为１５５．５４９ｇ／ｍ２和５．５３５ｇ／ｍ２，其中地上部分别为１２７．１１７ｇ／ｍ２和４．４６３ｇ／ｍ２；地下部分别为２８．４３２ｇ／ｍ２和１．０７２ｇ／ｍ２．甜槠群落氮、磷元素的生物循环中，年吸收量分别为９．４５８ｇ／ｍ２．ａ和０．４３４ｇ／ｍ２．ａ，存留量分别为４．４８８ｇ／ｍ２．ａ和０．１９９ｇ／ｍ２．ａ ...
何建源 +5 more
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Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT Although lithium metal has been regarded as an ideal anode material for high‐energy‐density batteries, its practical applications remain hindered by many serious challenges. Three‐dimensional (3D) porous Cu current collectors demonstrate potential in ensuring uniform Li deposition.
Meng‐Qi Zhu +7 more
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, 1997 本文是福建武夷山森林生态系统研究的一部分，主要讨论黄山松（Pinustaiwanensis）群落的氮磷累积和循环。测定结果表明：（1）群落现存量中氮（N）、磷（P）的库量分别为925．844kghm-2和45．981kghm-2，其中地上部分别为719．438kghm-2（占总库量的77．706%）和35．534kghm-2占77.280％），地下部分别为206．406kghm-2（占22．294％）和10．447kghm-2（占22.720％）；（2）N、P的生物循环中，年吸收量分别为65 ...
何建源 +5 more
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Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT This study introduces novel nonequiatomic TiZrCoCrMoCux (x = 0, 5, 10; at%) medium‐entropy alloys (MEAx) tailored for orthopedic implants, synergistically combining the biocompatibility of Ti‐based alloys, the wear resistance of CoCrMo alloys, and the antibacterial/osteogenic attributes of Cu. The alloy's microstructure, mechanical properties,
Hang Yu +9 more
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NUTRIENT CYCLING OF N AND P BY A MIXED FOREST OF CUNNINGHAMIA LANCEOLATA AND TSOONGIODENDRON ODORUM IN SUBTROPICAL CHINA [PDF]
, 2002 通过对福建三明 2 7年生杉木 (Cunninghamialanceolata) 观光木 (Tsoongiodendronodorum)混交林 (混交比例2 :1)及杉木纯林群落N、P养分循环进行为期 2年的研究。结果表明 ,混交林中杉木和观光木地上各组分的N、P含量大小均为叶 >活枝 (或皮 ) >枯枝 >干 ,而根系的则随径级的减小而增大 ,且观光木各组分的N含量均高于杉木的 ;混交林群落的N、P总积累量达 5 85 .2 2 3kg·hm-2 和 12 8.784kg·hm-2 ,分别是纯林群落的
何宗明 +5 more
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In Situ Uniform Lithium Enrichment for Dense, High‐Performance LLZO Solid Electrolytes
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT A major challenge in garnet‐type Li7La3Zr2O12 (LLZO) system all‐solid‐state electrolytes is the high porosity that typically remains after sintering, which compromises ionic conductivity and degrades battery cycling performance. To address this, we propose an innovative strategy to achieve uniform lithium enrichment on the surface of ...
Yi‐Yang Xiao +8 more
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水土保持生态工程建设中水资源的合理配置与利用——关于集雨节灌建设中几个问题的探讨
Shuitu Baochi Xuebao, 2002 论述了集雨节灌在实现农业现代化、农民脱贫致富、水资源可持续利用、减少黄河下游泥沙淤积、水土保持生态工程建设、水利建设等方面的作用 ;集雨节灌建设中应对地表水和地下水统筹考虑、合理配置 ;雨水集蓄工程建设必须同时考虑集水含沙量 ,提出了一种采用拦沙原理设计沉沙池的方法 ,与采用沉沙原理设计的沉沙池可以进行优化比较设计 ;针对集雨节灌工程年费用计算时缺乏有关设施、设备的折旧年限、年折旧率、年大修费率的现状 ,提出了有关设施、设备的折旧年限、年折旧率、年大修费率 ,供年费用计算时参考。
李怀有 赵安成 脱中平 白文瑷
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