Results 31 to 40 of about 34,310 (205)
Shuitu Baochi Xuebao, 2019 为阐明不同土地利用类型土壤碳（C）、氮（N）、磷（P）生态化学计量学特征，对福州农田不同土地利用类型（水稻田、菜地和茉莉园）下的土壤全碳（TC）、全氮（TN）、全磷（TP）含量及其生态化学计量学特征进行测定和分析。结果表明：土壤TC含量均值基本表现为水稻田 > 菜地 > 茉莉园（P 菜地 > 茉莉园（P 水稻田 > 茉莉园 ...
刘旭阳 +5 more
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Enhanced Oxygen Reduction Reaction Performance of Fe‐N4 Single‐Atom Catalysts Through Fe3C Coupling
Rare Metals, Volume 45, Issue 9, September 2026.ABSTRACT Understanding the electronic factors contributing to the high oxygen reduction reaction (ORR) activity of Fe‐N4 sites remains a significant challenge due to the localized Fe 3d orbitals and their sensitivity to the coordination environment.
Shichang Cai +19 more
wiley +1 more source
Rare Metals, Volume 45, Issue 9, September 2026.ABSTRACT Tin‐based composite oxides typically undergo severe volume variations and exhibit poor intrinsic conductivities despite their high theoretical capacity as promising anode candidates for sodium‐ion batteries. This results in rapid structural degradation and capacity fading upon cycling.
Yongmei Sun +5 more
wiley +1 more source
, 2013 英國的「能源與氣候變遷部」（UK Department of Energy and Climate Change, 2010）指出，一般住家在採行能源效率改善措施時，也面對多種障礙，包括資訊不足、不正確的價格信息、融資不易、契約問題、技術不足，以及不確定性等問題。鑒於「低碳永續家園」所涵蓋的範圍極廣，所涉業務領域甚多，所面臨的問題及障礙更是不一而足。因此，本文首先從政府財政能力、現有融資問題、及住家的困境等層面，分析當前推動低碳永續家園的障礙。其次，則以英國為例，說明其所推動的各項節能減碳政策及融資機制，
chhuang@tri.org.tw +1 more
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Rare Metals, Volume 45, Issue 9, September 2026.ABSTRACT Ultrathin sodium (Na) metal anodes (< 40 μm) with superior electrochemical performance are essential in developing high‐energy‐density sodium metal batteries (SMBs). Nonetheless, Metallic Na's poor processability hinders its practical application.
Hao Yao +6 more
wiley +1 more source
Shuitu Baochi Xuebao, 2006 以保护性耕作长期定位试验为研究对象，分析了保护性耕作对土壤不同层次的总碳、活性碳的影响，并计算了各处理的碳库活度、碳库活度指数和碳库管理指数。结果表明，土壤总有机碳和活性碳均随土层的增加而减少，其0～30cm平均总有机碳含量大小为旋耕〉免耕〉翻耕〉对照，秸秆还田提高土壤耕层总有机碳，旋耕和免耕提高表层土壤有机碳．且差异达到显著水平；土壤活性碳平均含量为旋耕〉翻耕〉对照〉免耕，旋耕和翻耕提高土壤活性碳，免耕则降低土壤活性碳，尤其是10～20cm土层活性碳比旋耕下降了27．33％。华北平原0 ...
李琳, 李素娟, 张海林, 陈阜
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Rare Metals, Volume 45, Issue 9, September 2026.ABSTRACT Lignin hydrogenolysis is a promising route to separable aromatic monomers, yet practical upgrading is still hindered by macromolecular mass‐transfer limitations and the aggregation/deactivation of metal sites. Herein, we propose a “dual‐confinement” strategy to construct ultrafine Ru nanoclusters supported on lignin‐based N‐doped hierarchical ...
Tianjin Li +11 more
wiley +1 more source
, 2009 采用我国东北地区的连续施肥28 a的典型黑土,通过颗粒分组的方法,研究了长期不同施肥处理对土壤团聚体形成和有机碳在各级团聚体中的分布规律,以及各粒级团聚体对养分的贡献能力的影响。结果表明,施用有机肥促进了土壤中大颗粒团聚体(>0.25 mm)的形成,尤其以21 mm粒级增加的比例最大;而当化肥和有机肥配合施用后 ...
有效性 +3 more
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Rare Metals, Volume 45, Issue 9, September 2026.ABSTRACT In MAX‐phase‐derived metal–matrix composites, the M‐site element simultaneously governs carbide chemistry and matrix precipitate stability, yet it has traditionally been selected empirically rather than from a predictive criterion linking M‐site choice to carbide chemistry, matrix alloying, and L12 stability; moreover, the reaction pathway ...
Wei Yang +8 more
wiley +1 more source
, 2009 本发明涉及石墨碳，具体地说是一种以PPy/生物质复合物为碳化前驱物，在微波作用下快速碳化并石墨化，制备大比表面积的石墨复合材料的非硬模板方法。具体制备方法是：首先，采用三氯化铁为催化剂，采用蒸汽相聚合技术制备出Fe/PPy/生物质复合物；其次，将制备的Fe/PPy/生物质复合物进行微波碳化处理；最后，样品经过酸处理，除去生成的碳化铁，得到高比表面积的石墨化碳材料。采用类似的方法，申请人还成功地制备出了金属碳化物/石墨化碳复合材料 ...
包信和, 王春雷, 马 丁
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