Results 11 to 20 of about 22,800 (217)
People and Nature, EarlyView.Abstract Currently, scholarship on education to foster connectedness with nature primarily focuses on children. As adults likewise face the disconnection from nature and play a key role in influencing children, it is important to understand how they perceive, engage in, and benefit from relevant programmes.
Xiaoxue Chen, Zuyi Lyu, Junxi Qian
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Garnet and LISICON-type Solid Electrolytes: Synthesis, Performance and Ionic Diffusion Dynamics [PDF]
, 2015 相对于有机液体电解液，无机固体电解质在化学与电化学稳定性方面具有无可比拟的优势，能极大提升锂离子电池安全性能及其循环稳定性，近年来成为可充锂（离子）电池研究者所关注的热点。其中，对Li4SiO4-Li3PO4（LISICON）体系的研究已经有近30年的历史，由于其较低的原料成本、较为容易的合成条件及良好的稳定性，研究者对该体系依然保持着很高的研究兴趣。Garnet型固体电解质是新兴锂离子导体，由于其具有高Li+电导率和良好的稳定性，一问世便引起工作者极大的研究兴趣 ...
王大为
core
Tracing change in the public perception of plants: insights from archives and social media in China
PLANTS, PEOPLE, PLANET, EarlyView.As urbanization accelerates, historic gardens serve as vital cultural treasures that offer spiritual and cultural support to the public. This study proposes an innovative approach that merges historical records from the Qing Dynasty with contemporary social media data to explore changes in public perceptions of these gardens.
Dong Xu +4 more
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Zhejiang Daxue xuebao. Lixue ban, 2009 以气相法二氧化硅为载体,链状胺和环胺为功能化试剂,制得一系列二氧化硅-胺基复合载体,通过配位反应得到二氧化硅负载胺-钯(II)配合物,进一步还原得到二氧化硅负载胺-钯(0)配合物.采用IR、XRD、XPS、ICP技术对配合物进行表征,并研究了配合物的制备、反应条件以及配体差异对其催化碘苯与丙烯酸的Heck反应的性能.结果表明,该类催化剂在较低的温度下(70~90 ℃)即可较好地催化该反应,生成反式产物；还原后催化剂具有更好的催化活性和良好的重复使用性能；具有链状胺基配体的催化剂随着N原子数目的增加 ...
HUGuo-hui(胡国辉) +5 more
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Rare Metals, EarlyView.ABSTRACT Photocatalytic molecular oxygen (O2) activation provides a sustainable approach to produce singlet oxygen (1O2) for organic contaminants detoxification. However, the charge carriers‐involved pathway usually suffers from unsatisfactory 1O2 production efficiency owing to energy loss caused by photogenerated hole‐mediated superoxide species (•O2−
Yan‐Biao Shi +8 more
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提升风电消纳水平的电力系统灵活性措施经济性评估方法研究 [PDF]
全球能源互联网, 2018 近年来，中国风电并网容量不断增大，出现了严重的弃风现象，随着各类技术可行的灵活性措施提出，亟需研究经济合理的措施组合以降低弃风量。为此，提出一种提升风电消纳能力的电力系统灵活性措施的经济性评估方法。首先，构建基于成本效益的经济性评价指标，即减少风电弃风量的单位成本，以量化各类灵活性措施对提高电网风电消纳能力的效果；然后，采用时序生产模拟模型量化分析系统的年度弃风总量，生产模拟模型考虑常规电源、风电及负荷，以小时为仿真粒度进行机组组合和经济调度；最后，构建了灵活性措施的年化成本模型 ...
张富强, 元博, 张晋芳, 张涛
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Rare Metals, EarlyView.ABSTRACT Rare earth elements (REEs) play an irreplaceable role in modern technology and industry. However, due to the highly similar physicochemical properties among REEs, their separation remains a significant challenge. Additionally, REEs often exist in low‐concentration solutions, making efficient REE recovery an urgent task.
Miao‐Miao Huang +6 more
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Dizhen xuebao基于史密森学会火山目录分析了全球火山活动的时空特征，并结合中国地震台网目录讨论了火山活动对全球和中国大陆强震活动趋势的指示意义。结果显示：① 全球火山活动表现出较为显著的百年周期特征，且百年周期内火山活动和M≥8.0大震之间存在着频次准同步和能量互补现象；② 中国大陆1955年前后强震活动状态的变化可能与同期全球火山活动状态变化密切相关，且二者可能受控于百年周期内地球内部能量积累与释放的状态变化；③ 2022年汤加火山的剧烈喷发意味着地球内部能量仍在持续释放 ...
Fuqiang Shi +7 more
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Micro/Nanoelectrodes technique and Its Applications in Surface diffusion [PDF]
, 2015 “无表面扩散，则无异相催化。”——盖博·索马杰。表面扩散作为固体表面科学中的基础研究之一，在能源材料、化学工业和环境保护等许多重要领域中扮演着十分重要的角色。 虽然目前已广泛建立了多达几十种能够在超高真空或者气相环境中系统研究表面扩散的实验方法。然而在电化学体系中，对于电极表面吸附物种表面扩散行为的研究无论在实验上还是理论上都是极具挑战的。微纳电极技术为电化学领域的研究带来了更高的空间及时间分辨率，从而许多在常规尺寸电极上无法直接观测的现象却在微纳电极上显得尤为突出，例如吸附物种的表面扩散 ...
王玮
core
Multi‐Functional S‐HA/ASTA NPs Coating on Biodegradable ZE21B Alloy for Cerebrovascular Applications
Rare Metals, EarlyView.ABSTRACT Magnesium (Mg) and its alloys have attracted extensive attention of researchers in the field of cerebrovascular implants due to their good mechanical properties and biosafety. However, rapid degradation and delayed endothelialization pose challenges. To address these issues, this study introduces a multifunctional composite coating.
Aqeela Yasin +4 more
wiley +1 more source