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磁性材料的制备及其污水处理性能测试——基于混合式教学的综合实验
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作者 郭仕龙 胡敏 +6 位作者 尤帅 文浩宇 杨雅儒 刘文彬 高培红 向丹 张雯 《大学化学》 CAS 2021年第8期146-154,共9页
利用活性炭吸附特性和纳米四氧化铁的磁性,设计并制备一种低成本、可回收的Fe_(3)O_(4)@C复合材料,对其磁性及水处理性能进行研究,以解决传统水处理材料不能重复利用且易残留于水体中问题的综合实验。本实验以问题为导向,Fe_(3)O_(4)@C... 利用活性炭吸附特性和纳米四氧化铁的磁性,设计并制备一种低成本、可回收的Fe_(3)O_(4)@C复合材料,对其磁性及水处理性能进行研究,以解决传统水处理材料不能重复利用且易残留于水体中问题的综合实验。本实验以问题为导向,Fe_(3)O_(4)@C复合材料为载体,帮助学生掌握无机纳米材料的基本制备、性能表征方法,提高学生数据处理及解读能力,同时提供一种新的综合实验教学新模式——混合式教学,即通过大型仪器介绍、使用和数据软件学习采用线上教学,而材料制备及污水处理性能评价采用线下实践相结合的模式,解决传统无机化学实验材料前沿表征手段与数据处理训练较为薄弱的问题。本实验可作为无机化学、现代仪器分析等理论课程的配套综合实验。 展开更多
关键词 污水处理 磁性纳米复合材料 可回收 混合式教学
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Erratum to:Holocene temperature variation recorded by branched glycerol dialkyl glycerol tetraethers in a loess-paleosol sequence from the north-eastern Tibetan Plateau
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作者 Tianxiao WANG Duo WU +4 位作者 Tao WANG Lin CHEN shilong guo Youmo LI Chenbin ZHANG 《Frontiers of Earth Science》 SCIE CSCD 2024年第2期460-461,共2页
Erratum to:Front.Earth Sci.DOI 10.1007/s11707-023-1094-6 The original version of this article unfortunately contained a mistake.The presentation of was incorrect.The corrected figure is given below.
关键词 ALKYL corrected Plateau
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Holocene temperature variation recorded by branched glycerol dialkyl glycerol tetraethers in a loess-paleosol sequence from the north-eastern Tibetan Plateau
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作者 Tianxiao WANG Duo WU +4 位作者 Tao WANG Lin CHEN shilong guo Youmo LI Chenbin ZHANG 《Frontiers of Earth Science》 SCIE CSCD 2023年第4期1012-1025,共14页
Reconstructing Holocene temperature evolution is important for understanding present temperature variations and for predicting future climate change,in the context of global warming.The evolution of Holocene global te... Reconstructing Holocene temperature evolution is important for understanding present temperature variations and for predicting future climate change,in the context of global warming.The evolution of Holocene global temperature remains disputed,due to differences between proxy reconstructions and model simulations,a discrepancy known as the῾Holocene temperature conundrum᾽.More reliable and quantitative terrestrial temperature records are needed to resolve the spatial heterogeneity of existing records.In this study,based on the analysis of branched glycerol dialkyl glycerol tetraethers(brGDGTs)from a loess-paleosol sequence from the Ganjia Basin in the north-eastern Tibetan Plateau(NETP),we quantitatively reconstructed the mean annual air temperature(MAAT)over the past 12 ka.The MAAT reconstruction shows that the temperature remained low during the early Holocene(12−8 ka),followed by a rapid warming at around 8 ka.From 8 to 4 ka,the MAAT record reached its highest level,followed by a cooling trend from the late Holocene(4−0 ka).The variability of the reconstructed MAAT is consistent with trends of annual temperature records from the Tibetan Plateau(TP)during the Holocene.We attribute the relatively low temperatures during the early Holocene to the existence of ice sheets at high-latitude regions in the Northern Hemisphere and the weaker annual mean insolation at 35°N.During the mid to late Holocene,the long-term cooling trend in the annual temperature record was primarily driven by declining summer insolation.This study provides key geological evidence for clarifying Holocene temperature change in the TP. 展开更多
关键词 sHolocene Ganjia Basin LOESS temperature variation BrGDGTs
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