Results 31 to 40 of about 5,085 (166)
Porous Mn2O3@C Cathode With High Activity and Long Lifespan for Aqueous Zinc Ion Batteries
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Manganese‐based oxides are widely employed as cathode materials for aqueous zinc ion batteries (AZIBs) due to their low toxicity and high theoretical specific capacity. However, their inherent poor electrical conductivity, coupled with the dissolution of manganese into the electrolyte, often leads to structural degradation of the cathode.
Cheng‐Jie Yin +5 more
wiley +1 more source
Shuitu Baochi Xuebao, 2017 以名山河流域不同类型土壤为研究对象，研究了不同土地利用方式下土壤有机碳和团聚体中有机碳含量的分布特征。结果表明：（1）名山河流域3种类型的土壤有机碳含量在17.50~34.70 g/kg之间，含量高低表现为水稻土>黄壤>紫色土，水稻土含量分别是黄壤和紫色土的1.32，1.39倍；从不同的土地利用方式看，水田土壤有机碳及活性有机碳含量显著高于旱地、茶园和果园，土壤活性有机碳与土壤有机碳呈极显著正相关（R2=0.884 6）；（2）土壤有机碳含量在土壤剖面中表现出随着土层深度的增加而降低的趋势，表层土壤（0—
李欣雨 +4 more
doaj
Contribution of Different Processes in Wetland Soil N_2O Production in Different Restoration Phases of the Yellow River Estuary, China [PDF]
, 2014 采用时空替代法,选择黄河口生态恢复前后未恢复区(R_0)、2007年恢复区(R_(2007))和2002年恢复区(R_(2002))的芦苇湿地为研究对象,分析了生态恢复工程对湿地土壤N_2O产生不同过程与贡献的影响. 结果表明,尽管不同恢复阶段湿地土壤N_2O总产生量差异明显,但总体均表现为N_2O释放. 恢复区湿地土壤的N_2O产生量大于未恢复区.
孙万龙 +4 more
core
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Although magnetic carbon materials possess significant potential in the field of electromagnetic wave absorption (EWA) due to the synergistic effect of multiple attenuation mechanisms, the currently reported magnetic carbon EWA materials face some challenges, such as high cost, low yield, and easy agglomeration of the magnetic component ...
Bo Jiang +9 more
wiley +1 more source
Shuitu Baochi Xuebao, 2016 为了解若尔盖高寒草地沙化对土壤活性有机碳组分的影响，采用空间代替时间的方法，通过野外土壤采集，并结合室内化验分析，研究了若尔盖高寒草原不同沙化阶段土壤有机碳及其活性组分的含量和变化特征。结果表明：沙化对高寒草地0—60 cm土层土壤有机碳含量具有显著影响，随沙化程度加剧，土壤总有机碳、溶解性有机碳、易氧化有机碳和微生物量碳含量均呈现显著下降的特征，极重度沙化阶段较潜在沙化阶段分别减少了74.76%，80.24%，76.02%和83.24%；活性有机碳组分的损失较土壤总有机碳明显 ...
费 凯 +5 more
doaj
The Concentration and Carbon Isotope Characteristics of Dissolved Inorganic Carbon in Jiulong River Tributaries and Estuary [PDF]
, 2015 碳是重要的生源要素，以各种形态贯穿生命全过程；碳循环是生态系统最重要的物质循环之一。本研究应用稳定同位素技术，以九龙江干流西溪、北溪和河口区域为研究对象，对西溪、北溪及九龙江河口区进行了一个水文年的季节性采样调查，分析了表层水体中溶解无机碳含量及其碳稳定同位素组成（δ13CDIC）、悬浮颗粒物有机碳氮含量及稳定同位素组成（δ13CPOC、δ15NPON），并结合其它相关的水体理化参数对九龙江干流至河口区水体溶解无机碳和颗粒有机碳及其碳稳定同位素的时空变化规律及环境控制因素进行了初步探讨，得出以下结论 ...
梁翠翠
core
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Sodium‐ion capacitors (SICs) offer high energy and power density with long cycle life, but developing kinetically compatible electrodes remains challenging. This work developed a simple and sustainable strategy to synthesize homologous carbon electrodes from the inner shells of durian husks (ISDH) for high‐performance SICs.
De‐Bing Yan +7 more
wiley +1 more source
Shuitu Baochi Xuebao, 2017 以福建漳江口、九龙江口、闽江口和浙江乐清湾为研究区，采集红树林和入侵种互花米草（入侵前为红树林）湿地土壤样品，分析互花米草入侵后土壤有机碳（SOC）、有机碳储量（SOCS）、活性有机碳组分（微生物生物量碳MBC、易氧化有机碳EOC、水溶性有机碳WSOC）以及有机碳键合组分（钙键结合有机碳（Ca—SOC）和铁铝键结合有机碳（Fe(Al)—SOC））的变化，探讨互花米草入侵对土壤有机碳组分以及稳定性的影响。结果表明：互花米草入侵红树林后，土壤SOC、SOCS、MBC和EOC总体上有所降低 ...
陈桂香, 高灯州, 陈, 王维奇
doaj
Remote Sensing Retrieval Algorithms and Spatial-temporal Characteristics of POC in the South China Sea [PDF]
, 2015 颗粒有机碳(ParticulateOrganicCarbon,POC)是海洋生物地球化学过程的重要组成部分，随着光学技术和遥感手段的进步，在不同时空尺度下监测POC取得很大突破。本文以2011年国家自然科学基金委南海共享航次现场光学数据为基础，探索适用于南海POC反演的海色卫星遥感算法，将算法应用到卫SeaWifs遥感反射比Rrs(λ)数据，得到南海月平均POC，并分析其在季节和年际时间尺度上的时空变化特征。 首先，依据现场观测遥感反射比Rrs(λ)和POC，用多种方法来估算南海表层POC浓度 ...
张鹏
core
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Metal sulfide, as a type of lithium/sodium‐ion battery material, possesses merits such as high capacity and low cost. Nevertheless, it is prone to structural changes during the cycling process, leading to volume changes and affecting electrochemical performance.
Wenjin Qin +7 more
wiley +1 more source