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您的检索式：作者名="Shelly Kelly"
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| 1 | Uranium sequestration in sediment at an iron-rich contaminated site at Oak Ridge, Tennessee via.bioreduction followed by reoxidation显示文摘This study evaluated uranium sequestration performance in iron-rich (30 g/kg) sediment via bioreduction followed by reoxidation.Field tests (1383 days) at Oak Ridge,Tennessee demonstrated that uranium contents in sediments increased after bioreduced sediments were re-exposed to nitrate and oxygen in contaminated groundwater.Bioreduction of contaminated sediments (1200 mg/kg U) with ethanol in microcosm reduced aqueous U from 0.37 to 0.023 mg/L.Aliquots of the bioreduced sediment were reoxidized with O2,H2O2,and NaNO3,respectively,over 285 days,resulting in aqueous U of 0.024,1.58 and 14.4 mg/L at pH 6.30,6.63 and 7.62,respectively.The source-and the three reoxidized sediments showed different desorption and adsorption behaviors of U,but all fit a Freundlich model.The adsorption capacities increased sharply at pH 4.5 to 5.5,plateaued at pH 5.5 to 7.0,then decreased sharply as pH increased from 7.0 to 8.0.The O2-reoxidized sediment retained a lower desorption efficiency at pH over 6.0.The NO3--reoxidized sediment exhibited higher adsorption capacity at pH 5.5 to 6.0.The pH-dependent adsorption onto Fe(Ⅲ) oxides and formation of U coated particles and precipitates resulted in U sequestration,and bioreduction followed by reoxidation can enhance the U sequestration in sediment. | Peng-Song Li Wei-Min Wu Debra H.Phillips David B.Watson Shelly Kelly Bing Li Tonia Mehlhorn Kenneth Lowe Jennifer Earles Hu-Chun Tao Tong Zhang Craig S.Criddle | 2019 | Journal of Environmental Sciences2019，31，11： | 1 |
| 2 | Optimization of fibrin scaffolds for differentiation of murine embryonic stem cells into neural lineage cells显示文摘 | Stephanie M. Willerth Kelly J. Arendas David I. Gottlieb Shelly Elese Sakiyama-Elbert | 2006 | Biomaterials2006，，36： | 1 |
| 3 | 先进表征技术在工业催化中的应用(英文)显示文摘分析表征与工业应用技术之间的相互影响对开发石油加工的催化材料一直起着至关重要的作用.本文着重介绍石油化工中两类最重要的催化材料:(1)催化重整工艺中广泛使用的负载于氧化铝上的铂纳米颗粒;(2)加氢处理工艺中用于加氢和去除杂原子的含钼和钨的层状硫化物.首先,我们综述了用扩展X射线吸收精细结构(EXAFS)和扫描透射电子显微镜研究铂团簇生长和结构的最新研究动态.详细讨论了氧化预处理条件以及氢气环境中的还原温度对铂纳米粒子形态的影响,并结合最近的实验结果进一步延伸对铂纳米颗粒结构演变的理解.随后,本文总结了一系列分析表征技术对层状硫化物纳米颗粒研究的贡献,综述了硫化物纳米粒子活性中心结构的研究进展,重点介绍了边缘活性中心与硫和氢之间的互动在化学吸附、物理吸附及溢流效应中的关键作用.本文也对负载及非负载型的硫化物纳米粒子最新程序升温还原实验结果进行了探讨.氧化铝负载的硫化钼颗粒在程序升温还原过程中的结构变化可以通过EXAFS实验和密度泛函理论模拟来解释.研究表明,可识别的硫化物边缘活性中心上硫原子的去除是导致这一类结构变化的主要原因. | Shelly Kelly Wharton Sinkler Lijun Xu Sergio Sanchez Cem Akatay Haiyan Wang John Qianjun Chen | 2019 | Chinese Journal of Catalysis2019，40，11： | 0 |
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