Results 31 to 40 of about 22,454 (115)
Neutral interactions among non‐native plants are common
New Phytologist, EarlyView.Global distribution of studies and overall effect of co‐invasion for all metrics of non‐native plant performance combined. Summary Globalization has accelerated the establishment of non‐native plant species, increasing the prevalence of multispecies co‐invasions; yet interactions among co‐invaders remain poorly understood.
Feng He +7 more
wiley +1 more source
Gongye shui chuli, 2022 为获得低成本、高效率的偶氮染料废水处理方法，采用改性活性炭催化过硫酸盐（PS）氧化降解甲基橙染料废水。通过单因素实验分别研究改性活性炭、PS及Fe2+浓度对甲基橙降解的影响，降解过程遵循拟一级动力学模型，反应速率常数为0.075 7~1.717 8 min-1。采用Box-Behnken Design响应面研究各因素及其交互作用对甲基橙降解的影响，各因素贡献排序为：催化剂投加量>PS浓度>Fe2+浓度，最佳反应条件：催化剂投加量为0.73 g/L、PS浓度为2.0 mmol/L、Fe2 ...
赵娟娟 +6 more
doaj +2 more sources
四川大学学报. 自然科学版, 2015 利用溶血与凝聚检查法检测见血青总皂苷体外溶血活性,以及用DPPH自由基法、水杨酸法、邻苯三酚自氧化法研究其体外抗氧化活性.实验结果显示:总皂苷在0.12～0.6mg/mL范围内未表现出溶血作用,但出现了红细胞凝聚现象;对DPPH自由基的清除率与BHT相当,其IC50值为0.17mg/mL;对羟自由基、超氧阴离子自由基的清除率较Vc弱,且在0.025～0.475mg/mL浓度范围内变化不大.
曾春菡, 刘小波, 曹弈璘, 王丽
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Identical Platform, Divergent Publics: Sweden and Finland During the 2022 NATO Crisis
Policy &Internet, Volume 18, Issue 3, September 2026.ABSTRACT Digital platforms are often theorized as universal drivers of political polarization, yet empirical patterns remain inconsistent across countries. Leveraging the natural‐experiment logic of Sweden's and Finland's simultaneous 2022 NATO applications and the NATO–Turkey diplomatic crisis, this study examines how national political cultures ...
Selcen Ozturkcan
wiley +1 more source
Efficient Photocatalytic Removal of Toluene by Synergistic FeCe/TiO2: Performance and Mechanism
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Efficient removal of volatile organic compounds (VOCs) in confined spaces is crucial for environments such as spacecraft and deep‐sea submarines. Metal modification is an effective strategy to enhance the light absorption capacity of titanium dioxide (TiO2) and suppress the recombination of photogenerated charge carriers.
Ke Xu +10 more
wiley +1 more source
Flexible, Robust Transparent Conductive Films With Excellent Electromagnetic Shielding Properties
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Transparent conductive films (TCFs) are indispensable components for next‐generation wearable electronics, intelligent robots, and electromagnetic interference (EMI) shielding devices. However, the fabrication of conventional random metallic mesh suffers from an inherent trade‐off between “randomness and controllability”.
Shanghao Lu +5 more
wiley +1 more source
Gongye shui chuli, 2017 采用溶剂热-沉淀法制备BiOI负载Fe3O4的新型可见光催化剂BiOI/Fe3O4，并通过X射线衍射（XRD）和扫描电镜（SEM）对BiOI/Fe3O4进行表征分析。实验结果表明：金橙Ⅱ的降解率随着初始过硫酸盐（PS）浓度和催化剂浓度的增大而增大。但当PS浓度、催化剂质量浓度分别增大到0.5 mmol/L、0.5 g/L时，降解率随着两者浓度的增大而降低。随着初始pH的增大，金橙Ⅱ的降解速率逐渐降低。此外，自由基淬灭剂异丙醇和叔丁醇的加入，证明了该体系主要的活性自由基是羟基自由基（·OH）和硫酸根自由基（
杨波 +5 more
doaj +2 more sources
Zhejiang Daxue xuebao. Lixue ban, 2019 采用密度泛函理论的B3LYP 方法、微扰理论的MP2 方法和自洽反应场（SCRF） 理论的SMD 模型方法，研究了水环境下羧基与氨基间为单氢键的α-Ala 旋光异构及羟自由基和氢氧根作用的反应。研究发现：α- Ala 的旋光异构可在a 和b 两个通道实现，a 通道为羧基顺反异构后，水分子簇作媒介质子以氨基为桥从α 碳的一侧向另一侧迁移；b 通道为水分子簇作媒介，质子从α 碳向氨基氮的迁移与羧基顺反异构协同进行。在a 通道，羟自由基水分子簇可致α-Ala 损伤。势能面计算表明：水环境下，在a 通道3 ...
YANHongyan(闫红彦) +3 more
doaj +1 more source
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Gradient structures (GS) introduced by plastic deformation have been shown to effectively enhance the surface properties of metallic materials. However, the GS fabricated by existing methods often suffers from limited hardening depth and limited control over the GS layer, which constrain their engineering applications.
Yansong Guo +5 more
wiley +1 more source
四川大学学报. 自然科学版, 2006 运用群论和原子分子静力学方法,推导了SiH(SiD)自由基分子基态的合理离解极限.采用多种方法和基组组合优化计算了SiH(SiD)自由基分子基态的平衡结构,振动频率和离解能.使用二次组态相互作用方法QCISD(T)结合6-311++g(3df,3pd)基组对SiH(SiD)自由基分子基态进行了单点能扫描计算.对标准的Murrell-Sorbie函数进行修正,用最小二乘法分别拟合Murrell-Sorbie函数和修正的Murrell-Sorbie函数得到了SiH(SiD ...
宋晓书 +4 more
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