Results 41 to 50 of about 22,454 (115)
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Self‐supporting aluminum (Al) foil anodes offer the advantages of high energy density, simplified structural configuration, and low cost. However, their practical application is severely constrained by challenges such as low initial Coulombic efficiency, pronounced interfacial side reactions, and sluggish lithiation kinetics.
Sheng Yang +8 more
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Zhongguo shiyan zhenduanxue, 2014 直结肠癌是世界第二大癌症,致死率也位居第二位。临床分期往往决定了直结肠癌患者的预后,早期阶段确诊的患者往往预后良好[1]。电子顺磁共振谱仪（EPR）可以测定血浆蛋白的功能特性,以HSA为例,采用具有稳定自由基结构（如氮氧自由基,doxyl）的长链脂肪酸作为人工引入的自由基,然后与血清白蛋白结合 ...
刘忠超 +4 more
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Microstructure Tailoring of Laser Powder Bed Fused Nb521 Alloy Toward Strength‐Ductility Synergy
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Niobium‐based refractory alloys are promising candidates for high‐temperature aerospace structures, yet their limited ambient‐temperature ductility and poor processability remain major barriers to broader implementation. Here, Nb521 alloy was fabricated by laser powder bed fusion (LPBF), and the effects of processing conditions and subsequent ...
Lele Qin +7 more
wiley +1 more source
Gongye shui chuli, 1999 通过模拟贮存试验，研究了亚硫酸盐失效原因及防止方法。结果表明，目前广泛应用的亚硫酸盐法防止氧腐蚀效果有时不佳的原因主要是亚硫酸盐溶液在贮存期间的自动氧化。水质和pH值等条件对自动氧化几乎没有影响，自由基引发剂能加速自动氧化，自由基吸收剂则使稳定性提高。试验结果为亚硫酸盐氧化的自由基机理提供了有力证据，也为亚硫酸盐的贮存失效提供了有效的防止方法。
熊蓉春, 魏刚, 陈智生, 仲婧宇
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Gongye shui chuli, 2023 环境中富集的各种有机污染物对生态系统和人体健康存在较大威胁。近年来，基于过硫酸盐（PS）的高级氧化技术（AOPs）因操作简单、成本较低且氧化还原能力强，在高效降解有机污染物方面展现出巨大潜力。铁基生物炭（Fe-biochar）由于具有吸附和催化的双重优势，在活化PS降解有机污染物领域得到了广泛应用。简述了Fe-biochar复合材料的制备方法，介绍了Fe-biochar活化PS过程的影响因素，分析了污染物降解过程中存在的反应机制。Fe-biochar不仅可以通过吸附作用去除污染物 ...
张洪涛 +7 more
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自由基捕捉剂结构对
Fushe yanjiu yu fushe gongyi xuebao探究了N，N-二仲丁基对苯二胺（44PD）、特丁基对苯二酚（TBHQ）、二硫化二异丙基黄原酸酯（DIP）三类自由基捕捉剂对γ射线辐照作用下乙烯-醋酸乙烯共聚物（EVA）结构演化与性能变化行为的影响。热重分析（TGA）结果表明，三类自由基捕捉剂可抑制较高吸收剂量下EVA中聚乙烯链段的裂解。凝胶含量及应力松弛测试结果表明，三类自由基捕捉剂均可抑制EVA内部交联结构的构筑，其中，胺类抗氧剂44PD的抑制效果相对不明显，但吸收剂量较高时，含自由基捕捉剂的EVA，其交联结构较为完善，应力松弛速率较低 ...
胡 心芸 +6 more
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Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT The low energy density of sodium‐ion batteries (SIBs) remains a major barrier to their large‐scale deployment. Alloy‐based anodes represent a promising class of materials owing to their high specific capacity and low operating potential for sodium storage. However, their practical application is hindered by severe volume expansion upon cycling.
Chen Wang +10 more
wiley +1 more source
World Water Policy, Volume 12, Issue 3, August 2026.ABSTRACT Groundwater depletion is a major challenge in semiarid, hard‐rock regions where irrigation demands often exceed natural recharge. This study evaluates the effectiveness of farm‐scale recharge pits as a local, supplementary, and community‐managed groundwater recharge solution in the Dharta catchment of Rajasthan, India. Alongside check dams and
Prahlad Soni +4 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
wiley +1 more source
四川大学学报. 自然科学版, 2013 从猴头菇(Hericium erinaceus)子实体中,经过除杂、粉碎、热水浸提、醇沉处理后,得到了猴头菇杂聚糖粗提物,并运用DEAE-cellulose column进行柱层析分离纯化,得到猴头菇寡聚糖(HEO-A).通过水解,单糖分析,扫描电镜技术(SEM),高效凝胶渗透色谱(HPGPC),红外光谱技术(IR)和核磁共振技术(NMR)对猴头菇寡聚糖进行了初步的结构分析.结果显示,猴头菇寡聚糖由木糖和葡萄糖两种单糖构成,均重分子量为1877D.在体外化学模拟条件下 ...
王芳 +9 more
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