Results 31 to 40 of about 6,512 (162)
四川大学学报. 自然科学版, 2009 本文运用分子流体微扰变分理论和碳的物态方程,计算"铝基板/液态CO/蓝宝石"组合靶条件下CO依次经历第一、二、及三次冲击压缩的热力学状态参量。在考虑CO发生分解反应时,产物中碳的性质分别采用固态金刚石、固态石墨及液态碳三种不同情况描述。理论计算结果与实验数据对比发现,二者之间存在明显偏差。因此本文认为,在多次冲击实验中碳产物的状态可能与现有三相碳物态方程存在较大差异,而如何描述CO的化学和物理变化过程还需要更深入研究。
郑雪萍 +4 more
doaj
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Lithium–sulfur (Li–S) batteries are promising for next‐generation high‐energy‐storage systems but are hindered by polysulfide shuttle, sluggish kinetics, and volume expansion. Conventional carbon hosts struggle to simultaneously anchor and convert polysulfides efficiently.
Ling Chen, Peng Xu, Jiaojing Shao
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Control of Carbon and Sulfur Content in Electroslag Remelting Pure Iron
Teshugang, 2010 The main reasons of 5 t ingot carbon-pickup and low desulphurization ratio for pure iron during electroslag remelting (ESR) process are analyzed. With the process measures including to replace original remelting slag (% ) ~70 fluorite, ~30 alumina powder,
赵昱臻 +4 more
doaj
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT The electrocatalytic co‐reduction of CO2 and nitrate (NO3− ${\text{NO}}_{3}^{-}$) to synthesize urea presents a sustainable alternative to traditional industrial processes, yet its efficiency is fundamentally limited by the kinetically mismatched activation and coupling of CO2 and NO3− ${\text{NO}}_{3}^{-}$.
Jiayu Liu +9 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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Effect of Carbon, Ferrosilicon and Silicon Carbide on Scheelite Reduction Kinetics
Teshugang, 2007 The research of effect of carbon powder, ferrosilicon (75% Si) powder and silicon carbide powder on scheelite (67. 25% W03) powder reduction kinetics has been carried out by 15 kW carbon tube furnace in laboratory.
郭培民, 赵沛, 李正邦
doaj
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Li–O2 batteries garner widespread attention owing to their remarkable theoretical specific capacity. Nevertheless, the feasible implementation of the system is hindered by sluggish cathode reaction kinetics and poor anode stability. Herein, the carbon dots (CDs) with ‐OH, ‐NH2, and ‐COOH groups are synthesized and employed as electrolyte ...
Ying Li +9 more
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Organ‐specific ozone and nitrogen legacies strengthen substrate control over litter decomposition
Functional Ecology, Volume 40, Issue 8, Page 2548-2559, August 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract Elevated tropospheric ozone (O3) and nitrogen (N) deposition are concurrent atmospheric changes that strongly influence terrestrial carbon cycling, yet their combined effects on below‐ground decomposition remain poorly understood.
Xiaofan Hou +8 more
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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
doaj
Functional Ecology, Volume 40, Issue 8, Page 2617-2627, August 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract Root activity creates unique microbial hotspots in the rhizosphere by influencing the metabolic activities of surrounding soil microorganisms, profoundly regulating the dynamics of soil organic carbon (SOC). However, how root economic strategies affect the formation and
Qiyu Tan +8 more
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