Results 11 to 20 of about 2,917 (119)
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Graphitic carbon nitride (g‐C3N4) doped with 3d transition metals (3d‐TM@g‐C3N4) has gained attention as a noble metal‐free alternative for oxygen evolution and reduction reactions (OER/ORR). Yet the key mechanisms driving its performance remain debated, especially across different charge states.
Jing Zhang +6 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2000 目的 通过８７例鼻咽癌患者血清一氧化氮浓度的观察，研究内源性一氧化氮水平的变化与鼻咽癌病理过程的关 系及其临床意义，探讨一氧化氮在肿瘤免疫方面的作用。方法 采用硝酸还酶法，通过检测血清中ＮＯ－３与ＮＯ－２浓度的总和反 映体内一氧化氮水平。结果鼻咽癌病人血清一氧化氮含量显著高于健康人，前者ｘ±ｓ为１０２．３±７．５，后者仅为７１４± １８．２μ ｍｏｌ／Ｌ（Ｐ＜０．０１）。对４０例鼻咽癌患者同时检测血清一氧化氮和ＥＢ病毒ＶＣＡ—ＩｇＡ抗体结果发现，一氧化氮浓度与 ＶＣＡ抗体的阳性滴度呈正相关 ...
蔡桦, 雷旦生, 张顺
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Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Metal oxide‐based catalysts for oxygen reduction reaction (ORR) have drawn great attention in recent years. However, it remains technically challenging for the precise regulation of the overall performance due to the trade‐off effect among the activity, selectivity, and stability of electrocatalysts. Herein, a balancing strategy to control the
Haoran Ma +7 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2009 目的研究亚低温状态下,大鼠急性脑缺血时氧自由基—超氧化物歧化酶（SOD）和一氧化氮（NO）、一氧化氮合酶（NOS）的改变,探讨亚低温对缺血脑组织的保护机制。方法将45只Wistar大鼠随机分为9组,假手术组5只,缺血组及亚低温组又根据缺血、亚低温时间不同分为:3 h2、4 h4、8 h7、2 h亚组（各组均为5只）。采用颈内动脉线栓法制备大鼠大脑中动脉闭塞（MCAO）模型。结果比较缺血组和亚低温组,可见亚低温组栓塞侧脑组织超氧化物歧化酶（SOD）的生成和释放明显增加;亚低温组血清中一氧化氮（NO ...
林淑香 +3 more
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Gongye shui chuli, 2021 短程硝化-厌氧氨氧化工艺作为一种新型自养生物脱氮技术，在处理氨氮浓度高、碳氮比低的废水方面具有极大的经济优势。目前对于该工艺的启动方式以及高效稳定运行所需要控制的条件尚未进行很好的总结。基于此，对短程硝化-厌氧氨氧化工艺的影响因素、控制与启动进行了机理分析与总结，并对污泥菌群的生化过程进行了阐述，以期为后续开发更加稳定高效的短程硝化-厌氧氨氧化自养生物脱氮新技术提供理论参考。
赵杰俊 +3 more
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Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT The development of novel oxygen electrocatalysts with cost‐effectiveness, scalability, high catalytic activity, and stability presents a significant challenge for zinc–air batteries (ZABs). The nitrogen‐rich lignin coordination network structure is synthesized through amine modification of lignin.
Ping‐Xian Feng +8 more
wiley +1 more source
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Single‐atom catalysis hinges on fundamental challenges in precisely controlling metal‐support interactions and rationally regulating metal–adsorbate relationships. Herein, we report a universal strategy for constructing highly efficient and well‐defined Cu(I) single‐atom catalysts based on a trifurcate AlL3 molecular support.
Donghui Zhang +9 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2011 目的探讨吸入一氧化氮对重叠综合征患者肺动脉压及血凝状态的影响。方法经肺功能及多导睡眠监测筛选入组患者18例,随机分对照组及一氧化氮吸入组。治疗后观察肺动脉压、D-二聚体、血浆GMP-140的改变情况。结果吸入一氧化氮后测定肺动脉压降低、D-二聚体及血浆GMP-140均较治疗前下降。结论小剂量一氧化氮短时吸入对重叠综合征患者可降低肺动脉压、改善血凝状态、降低血小板活化。
阎琦 +6 more
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Gongye shui chuli, 2022 厨余废水具有氨氮浓度高的特点，常用的两级硝化反硝化脱氮工艺停留时间长、占地面积大，难以广泛应用。厌氧氨氧化（Anammox）作为一种节能高效的脱氮方式，可大幅缩短水力停留时间、减少占地。本研究提出采用Anammox处理厨余废水厌氧出水，探究两级Anammox工艺处理厨余废水厌氧出水并实现高效脱氮的可行性和稳定性。结果表明，两级Anammox工艺处理厨余废水厌氧出水实现了最高的总氮去除率（90.1%），总氮去除效率达到2 050 mg/（L·d）以上 ...
王思琦 +4 more
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Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Periodontitis is a chronic infectious oral disease triggered by periodontopathogenic bacteria, resulting in the progressive inflammation and destruction of the tissues surrounding teeth. To achieve reprogramming of the infectious microenvironment for periodontitis therapy, a nanoformulation was proposed by loading polydopamine (PDA) with ...
Hao Liang +14 more
wiley +1 more source