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| 1 | Removal of heavy metal ions from aqueous solution using red loess as an adsorbent显示文摘The adsorption behaviors of heavy metals onto novel low-cost adsorbent,red loess,were investigated.Red loess was characterized by X-ray diffraction,scanning electron microscopy and Fourier transform infrared spectra.The results indicated that red loess mainly consisted of silicate,ferric and aluminum oxides.Solution pH,adsorbent dosage,initial metal concentration,contact time and temperature significantly influenced the efficiency of heavy metals removal.The adsorption reached equilibrium at 4 hr,and the experimental equilibrium data were fitted to Langmuir monolayer adsorption model.The adsorption of Cu(II) and Zn(II) onto red loess was endothermic,while the adsorption of Pb(II) was exothermic.The maximum adsorption capacities of red loess for Pb(II),Cu(II) and Zn(II) were estimated to be 113.6,34.2 and 17.5 mg/g,respectively at 25°C and pH 6.The maximum removal efficiencies were 100% for Pb(II) at pH 7,100% for Cu(II) at pH 8,and 80% for Zn(II) at pH 8.The used adsorbents were readily regenerated using dilute HCl solution,indicating that red loess has a high reusability.All the above results demonstrated that red loess could be used as a possible alternative low-cost adsorbent for the removal of heavy metals from aqueous solution. | Shengtao Xing Meiqing Zhao Zichuan Ma | 2011 | Journal of Environmental Sciences2011，23，9： | 9 |
| 2 | Chemically triggered life control of“smart”hydrogels through click and declick reactions显示文摘The degradation of polymeric materials is recognized as one of the goals to be fulfilled for the sustainable economy.In this study,a novel methodology was presented to synthesize multiple highly cross-linked polymers(i.e.,hydrogels)through amine–thiol scrambling under mild conditions.Amine-terminated poly(ethylene glycol)(PEGNH_(2))was reacted with the representative conjugate acceptors to synthesize hydrogels in organic and aqueous solutions,respectively.The materials above exhibited high water-swelling properties,distributed porous structures,as well as prominent mechanical strengths.It is noteworthy that the mentioned hydrogels could be degraded efficiently in hours to release the original coupling partner,which were induced by ethylene diamine at ambient temperature through amine-amine metathesis.The recovered PEG-NH2 reagent could be employed again to regenerate hydrogels.Due to the multiple architectures and functions in polymeric synthesis,degradation and regeneration,a new generation of“smart”materials is revealed. | Xing Feng Meiqing Du Hongbei Wei Xiaoxiao Ruan Tao Fu Jie Zhang Xiaolong Sun | 2022 | Frontiers of Chemical Science and Engineering2022，16，9： | 0 |
| 3 | Rice OsIAA6 interacts with OsARF1 and regulates leaf inclination显示文摘Leaf inclination,a component of crop architecture,influences photosynthetic efficiency and planting density.Various factors,particularly the phytohormones auxin and brassinosteroids(BRs),function in regulating lamina joint bending,and understanding of the genetic control of leaf inclination will help to elucidate the relevant regulatory network.Screening a rice T-DNA insertion population revealed a mutant that was insensitive to auxin and displayed an enlarged leaf angle due to increased cell length on the adaxial side of the lamina joint.Genetic analysis revealed that the increased leaf inclination was caused by T-DNA insertion in the promoter region of OsIAA6,resulting in elevated OsIAA6 expression.Further study showed that OsIAA6 interacts with OsARF1 to suppress auxin signaling and regulates leaf inclination.OsIAA6 mediates the BR effects on lamina joint development,and OsBZR1,the key transcription factor in BR signaling,binds directly to the promoter of OsIAA6 to stimulate its transcription.These results indicate the roles of the OsIAA6-OsARF1 module in regulating rice leaf inclination and suggest the synergistic effects of the phytohormones auxin and BR. | Meiqing Xing Wei Wang Xing Fang Hongwei Xue | 2022 | The Crop Journal2022，10，6： | 0 |
| 4 | DNA methylation modification in heterosis initiation through analyzing rice hybrid contemporary seeds显示文摘Heterosis is an important biological phenomenon and widely applied in agriculture.Although many studies have been performed by using vegetative organs of F_(1) hybrid plants,how heterosis (or hybrid vigor) is initiated and formed,particularly the underlying molecular mechanism,remain elusive.Hybrid contemporary seeds of rice indica varieties 9311 and PA64 were innovatively used and analysis of DNA methylome of embryo and endosperm at early developing stages revealed the globally decreased DNA methylation.Genes,especially those relate to hormones function and transcriptional regulation present non-additive methylation.Previously identified heterosis-related superior genes are non-additively methylated in early developing hybrid contemporary seeds,suggesting that key genes/loci responsible for heterosis are epigenetically modified even in early developing hybrid seeds and hypomethylation of hybrid seeds after cross-pollination finally result in the long-term transcriptional change of F_(1) hybrid vegetative tissues after germination,demonstrating that altered DNA methylation in hybrid seeds is essential for initiation regulation and maintenance of heterosis exhibiting in F_(1) hybrid plants.Notably,a large number of genes show non-additive methylation in the endosperm of reciprocal hybrids,suggesting that endosperm might also contribute to heterosis. | Shirong Zhou Meiqing Xing Zhilong Zhao Yincong Gu Yunping Xiao Qiaoquan Liu Hongwei Xue | 2021 | The Crop Journal2021，9，5： | 0 |
| 5 | A proteomics study of auxin effects in Arabidopsis thaliana显示文摘许多植物激素通过 modulating 蛋白质降级调整植物生长和开发。在这研究, proteome 研究基于多维的非胶化猎枪途径被执行经由 Arabidopsis thaliana 的 ubiquitin-proteasome 小径分析导致植物生长素的蛋白质降级,与学习在植物生长素处理以后的全面蛋白质变化的强调(1 nM 或 1 湯愠楢楬祴。 | Meiqing Xing Hongwei Xue | 2012 | Acta Biochimica et Biophysica Sinica2012，44，9： | 0 |
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