Results 21 to 30 of about 2,233 (164)
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Formic acid (FA) is considered to be a safe and convenient hydrogen source; however, achieving controlled and efficient FA dehydrogenation under mild conditions using stable solid catalysts remains a significant challenge. Pd‐based catalysts have been extensively studied due to their superior catalytic activity to other metal catalysts.
Shuai Wei +10 more
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Shuitu Baochi Xuebao, 2005 对科尔沁沙地不同沙漠化阶段土壤有机碳、全氮含量、土壤质地以及碳氮密度进行了测定与分析。结果表明,沙漠化过程中不同阶段的特征体现在土壤碳、氮、颗粒组成的有规律变化,土壤碳、氮含量衰减,质地变粗;从潜在沙漠化阶段到严重沙漠化阶段,100 cm深土壤有机碳和全氮含量分别下降91.6%和85.8%,有机碳密度从4 877.9(C)g/m2下降到481.8(C)g/m2,全氮密度从518.0(N)g/m2下降到89.4(N)g/m2;土壤有机碳、全氮与土壤细颗粒组分(
李玉强 赵哈林 赵学勇 张铜会 移小勇 左小安
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Effect of Southeast Coastal Upwelling in Haitan Island of Northwestern Taiwan Strait on Surface Sedimentary Diatom [PDF]
, 2012 [目的]探讨台湾海峡西北部海坛岛东南沿岸上升流对表层沉积硅藻的影响。[方法]以台湾海峡西北部海坛岛东南沿岸的表层沉积硅藻为材料,对其进行筛选、制片、观察,研究其属种分布特征和上升流对其的影响。[结果]按照表层沉积硅藻的丰度分布特征,将其分为三个研究区,以柱状小环藻、具槽直链藻和波状辐裥藻为主要的优势种群。结合温度、盐度的资料,可以得出海坛岛东南沿岸海域存在上升流。[结论]该研究为进一步探讨海坛岛东南沿岸海域表层沉积硅藻与上升流的关系提供了科学依据。[Objective] To discuss the ...
吴翔恩, 李超, 范彦斌
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Functional Ecology, Volume 40, Issue 4, Page 983-1000, April 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract Organic phosphorus mineralization is a critical process in the phosphorus cycle, governing phosphorus bioavailability for plants. The PhoD gene, which encodes the key enzyme alkaline phosphatase, serves as a valuable biomarker for this process.
Sandhya Mishra +3 more
wiley +1 more source
Shuitu Baochi Xuebao, 2022 为了阐明人工梭梭林土壤碳氮磷密度及其生态化学计量特征演变规律,以吉兰泰荒漠区不同林龄(3,6,11,16年)人工梭梭林为研究对象,分析0—20,20—40,40—60 cm土层土壤有机碳(SOC)、全氮(TN)、全磷(TP)密度和生态化学计量特征。结果表明:(1)4种林龄人工梭梭林0—60 cm土层SOC、TN含量及其密度随林龄增加而升高,而TP含量及其密度随林龄增加而降低。其中,3,6年梭梭林SOC、TN含量及其密度随土层深度增加而升高,TP含量及其密度则与之相反;11,16年梭梭林SOC、TN ...
魏亚娟 +6 more
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Distribution Characteristics of Soil Organic Carbon and Its Composition in Suaeda salsa Wetland in the Yellow River Delta [PDF]
, 2013 应用物理分组方法研究了黄河三角洲典型碱蓬湿地土壤有机碳及其组分分布特征.结果表明,研究区土壤重组有机碳是土壤有机碳的主要组成部分,土壤重组有机碳含量、土壤颗粒有机碳含量与土壤总有机碳含量都显著正相关.研究区土壤轻组组分比例和含量范围分别在0.008%～0.15%和0.10～0.40 g·kg-1,颗粒有机碳分配比例范围为8.83%～30.58%,说明黄河三角洲碱蓬湿地土壤有机碳中非保护性组分较低 ...
于君宝, 管博, 董洪芳
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Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Low conductivity, slow ion‐diffusion, and limited reactive sites are common problems in electrocatalysts and electrode materials. In this study, a complex NiTe–CoTe heterojunction with abundant Te vacancies embedded in N, P, and F co‐doped hollow carbon nanorods (NiTe1−x–CoTe1−x/NPFC) was fabricated via a simple ionic liquid‐assisted ...
Mingjie Yi +7 more
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Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT The development of sodium‐ion batteries (SIBs) is limited by slow charge transfer kinetics and large material volume changes caused by the large radius of Na+. Leveraging the excellent physicochemical properties and unique heterostructures of metal selenides, ultrafine hetero‐CuFeSe2‐CoSe2 nanoparticles are in situ wrapped by ...
Ying Zhu +5 more
wiley +1 more source
Shuitu Baochi Xuebao, 2023 为探究不同类型外源碳长期施用对耕层灰漠土土壤碳储存及固碳潜力的影响。通过田间定位试验设置秸秆不还田处理,即NPK处理(CK);NPK+1.5 t秸秆(NPKS);NPK+1.5 t有机肥(NPKM);NPK+1.5 t棉秆炭(NPKB1);NPK+3.0 t棉秆炭(NPKB2),选取2013—2021年采集的土壤为研究对象。对耕层灰漠土土壤容重(BD)、有机碳密度(SOCD)、有机碳累积速率、有机碳储量(SOCR)和施用年限与有机碳储量之间相关性进行分析。经过9年定位试验结果表明:(1)从2013 ...
陈新邦 +3 more
doaj
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT The development of efficient and stable bifunctional catalysts remains a key challenge for green hydrogen production via electrochemical water splitting. In this study, a bimetallic Mo/Fe‐doped CoP2 nanoleaf array anchored on carbon cloth (Mo, Fe‐CoP2@CC) was synthesized from zeolitic imidazolate framework‐L (ZIF‐L) via an ion‐exchange and low‐
Xiangqun Zeng +6 more
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