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学者姓名：郭瑾
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摘要 ：
Double layers low pressure carbon nanotubes (CNTs) membrane was prepared by predepositing CNTs on the Polyethersulfone (PES) flat membrane by pressure-assisted membrane filtration technology. Ethanol and Triton X-100 (TX-100) were used as dispersant to disperse two kinds of CNTs. By filtering two kind of CNTs dispersions in sequence, double layers CNTs were distributed on the surface of a PES membrane. With the proportion of the CNTs using TX-100 as dispersant increasing, the pure water flux of the double layers CNTs membrane will decrease. Normally, a membrane's upper layer using ethanol as CNTs' dispersant have higher pure water flux. Overall, almost all the double layers low pressure CNTs membrane realized the higher HA removal rate than single layer. By using CNTs with a diameter of 10-20 nm and length of 10-30 μm, the membrane with upper layer of 70% CNTs using ethanol as dispersant and 30% CNTs using TX-100 as dispersant can removal over 95% HA. © Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence.
关键词 ：
Microfiltration Microfiltration Carbon nanotubes Carbon nanotubes Ethanol Ethanol Membrane technology Membrane technology Energy resources Energy resources
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| GB/T 7714 | Liu, Weiyan , Xue, Xiaolei , Wang, Qingshan et al. The preparation of double layers low pressure carbon nanotubes membrane [C] . 2021 . |
| MLA | Liu, Weiyan et al. "The preparation of double layers low pressure carbon nanotubes membrane" . (2021) . |
| APA | Liu, Weiyan , Xue, Xiaolei , Wang, Qingshan , Wang, Yu , Guo, Jin . The preparation of double layers low pressure carbon nanotubes membrane . (2021) . |
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摘要 ：
Polyethylene glycol (PEG) non-covalent-functionalized multi-walled carbon nanotubes (MWCNT) membrane were prepared by vacuum filtration. The dispersion and stability of MWCNT non-covalent functionalized with PEG were all improved. TEM characterization and XPS quantitative analysis proved that the use of PEG to non-covalent functionalize MWCNT was successful. SEM image analysis confirmed that the pore size of PEG-MWCNT membrane was more concentrated and distributed in a narrower range of diameter. Contact angle measurement demonstrated that PEG non-covalent functionalization greatly enhanced the hydrophilicity of MWCNT membranes. The results of pure water flux showed that the PEG-MWCNT membranes could be categorized into low pressure membrane. PEG-MWCNT membrane had a better effect on the removal of humic acid (HA) and a lower TMP growth rate compared with a commercial 0.01-mu m PVDF ultrafiltration membrane. During the filtration of bovine serum albumin (BSA), the antifouling ability of PEG-MWCNT membranes were obviously better than the raw MWCNT membranes. The TMP recovery rate of PEG-MWCNT membrane after cross flushing was 79.4%, while that of raw MWCNT-(COOH) and MWCNT membrane were only 14.9% and 28.3%, respectively. PEG non-covalent functionalization improved the antifouling ability of the raw MWCNT membranes and reduced the irreversible fouling, which effectively prolonged the service life of MWCNT membrane.
关键词 ：
low-pressure membrane low-pressure membrane membrane fouling membrane fouling multi-walled carbon nanotubes multi-walled carbon nanotubes non-covalent functionalization non-covalent functionalization polyethylene glycol polyethylene glycol
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| GB/T 7714 | Wang, Yu , Dong, Mengchan , Xiong, Xinya et al. Preparation of Ultrafiltration Membrane by Polyethylene Glycol Non-Covalent Functionalized Multi-Walled Carbon Nanotubes: Application for HA Removal and Fouling Control [J]. | MEMBRANES , 2021 , 11 (5) . |
| MLA | Wang, Yu et al. "Preparation of Ultrafiltration Membrane by Polyethylene Glycol Non-Covalent Functionalized Multi-Walled Carbon Nanotubes: Application for HA Removal and Fouling Control" . | MEMBRANES 11 . 5 (2021) . |
| APA | Wang, Yu , Dong, Mengchan , Xiong, Xinya , Gai, Xiaoli , Zeng, Jia , Luan, Guirong et al. Preparation of Ultrafiltration Membrane by Polyethylene Glycol Non-Covalent Functionalized Multi-Walled Carbon Nanotubes: Application for HA Removal and Fouling Control . | MEMBRANES , 2021 , 11 (5) . |
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摘要 ：
The inositol polyphosphate-5-phosphatase E (Inpp5e) gene is located on chromosome 9q34.3. The enzyme it encodes mainly hydrolyzes the 5-phosphate groups of phosphatidylinositol (3,4,5)-trisphosphate (PtdIns (3,4,5) P3) and phosphatidylinositol (4,5)-bisphosphate (PtdIns (4,5)P2), which are closely related to ciliogenesis and embryonic neurodevelopment, through mechanisms that are largely unknown. Here we studied the role of Inpp5e gene in ciliogenesis during embryonic neurodevelopment using inositol-deficiency neural tube defects (NTDs) mouse and cell models. Confocal microscopy and scanning electron microscope were used to examine the number and the length of primary cilia. The dynamic changes of Inpp5e expression in embryonic murine brain tissues were observed during Embryonic Day 10.5-13.5 (E 10.5-13.5). Immunohistochemistry, western blot, polymerase chain reaction (PCR) arrays were applied to detect the expression of Inpp5e and cilia-related genes of the embryonic brain tissues in inositol deficiency NTDs mouse. Real-time quantitative PCR (RT-qPCR) was used to validate the candidate genes in cell models. The levels of inositol and PtdIns(3,4) P2 were measured using gas chromatography-mass spectrometry (GC-MS) and enzyme linked immunosorbent assay (ELISA), respectively. Our results showed that the expression levels of Inpp5e gradually decreased in the forebrain tissues of the control embryos, but no stable trend was observed in the inositol deficiency NTDs embryos. Inpp5e expression in inositol deficiency NTDs embryos was significantly decreased compared with the control tissues. The expression levels of Inpp5e gene and the PtdIns (3,4) P2 levels were also significantly decreased in the inositol deficient cell model. A reduced number and length of primary cilia were observed in NIH3T3 cells when inositol deficient. Three important cilia-related genes (Ift80, Mkks, Smo) were down-regulated significantly in the inositol-deficient NTDs mouse and cell models, and Smo was highly involved in NTDs. In summary, these findings suggested that down-regulation of Inpp5e might be associated with abnormal ciliogenesis during embryonic neurodevelopment, under conditions of inositol deficiency.
关键词 ：
cilia cilia embryonic development embryonic development gene expression gene expression inositol inositol neural tube defects neural tube defects phosphoinositide 5-phosphatase phosphoinositide 5-phosphatase
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| GB/T 7714 | Yue, Huixuan , Li, Shen , Qin, Jiaxing et al. Down-Regulation of Inpp5e Associated With Abnormal Ciliogenesis During Embryonic Neurodevelopment Under Inositol Deficiency [J]. | FRONTIERS IN NEUROLOGY , 2021 , 12 . |
| MLA | Yue, Huixuan et al. "Down-Regulation of Inpp5e Associated With Abnormal Ciliogenesis During Embryonic Neurodevelopment Under Inositol Deficiency" . | FRONTIERS IN NEUROLOGY 12 (2021) . |
| APA | Yue, Huixuan , Li, Shen , Qin, Jiaxing , Gao, Tingting , Lyu, Jianjun , Liu, Yu et al. Down-Regulation of Inpp5e Associated With Abnormal Ciliogenesis During Embryonic Neurodevelopment Under Inositol Deficiency . | FRONTIERS IN NEUROLOGY , 2021 , 12 . |
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摘要 ：
In this study, the combination effect of preozonation and carbon nanotubes (CNTs) layer modification on lowpressure membrane (LPM) fouling control was systematically investigated. To understand the alleviation mechanism of the hybrid process, natural organic matter (NOM) from IHSS and effluent organic matter (EfOM) from actual sewage effluent were both selected as the typical organic foulants presented in actual surface water and wastewater. A dead-end continuous flow model combined with programmable logic control system was used to operate four membrane filtration units and their backwash processes. With a constant permeates flux, the fouling resistant of CNT modified LPM after preozonation could be evaluated according to the increase in transmembrane pressure (TMP). The results revealed that the hybrid approach of preozonation and CNTs modification could significantly improve the anti-fouling ability of LPM, reduce the backwash frequency, and improve the reversibility of membrane fouling. During the filtration of EfOM and NOM, preozonation improved the water treatment capacity of the CNTs modified membranes. The experiment of mass balance revealed that preozonation enhanced the recoverability of CNTs modified membrane and greatly increased its operation time in treating EfOM and NOM. The molecular weight distribution as well as EEM analysis demonstrated the dissimilar characteristics of EfOM and NOM, which caused the different treatment efficiency by preozonation and CNT modification. The mechanism of EfOM/NOM fouling on LPM was summarized as the primary blocking by medium-MW EfOM/NOM. CNTs modification had a better effect on the control of LPM fouling when treating EfOM, as it removed the medium-MW EfOM by adsorption and prevented the pores blockage of the original PVDF membrane. Preozonation had a better effect on the control of LPM fouling when treating NOM, as it greatly changed the MWD of NOM by removing medium-MW NOM. The combination effect of the hybrid preozonation and CNTs modification resulted in the most effective fouling control of LPM by both decreasing the medium-MW and large-MW EfOM/NOM. At the same time, it decreased irreversible fouling related with membrane pore blocking. The hybrid approach demonstrated its promising application for LPM fouling control in actual sewage water and surface water treatment process.
关键词 ：
Carbon nanotubes (CNTs) Carbon nanotubes (CNTs) Effluent organic matter (EfOM) Effluent organic matter (EfOM) Low-pressure membrane (LPM) Low-pressure membrane (LPM) Membrane fouling Membrane fouling Natural organic matter (NOM) Natural organic matter (NOM) Preozonation Preozonation
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| GB/T 7714 | Guo, Jin , Zhu, Xuedong , Wang, Qingshan et al. The combination effect of preozonation and CNTs layer modification on low-pressure membrane fouling control in treating NOM and EfOM [J]. | JOURNAL OF MEMBRANE SCIENCE , 2021 , 627 . |
| MLA | Guo, Jin et al. "The combination effect of preozonation and CNTs layer modification on low-pressure membrane fouling control in treating NOM and EfOM" . | JOURNAL OF MEMBRANE SCIENCE 627 (2021) . |
| APA | Guo, Jin , Zhu, Xuedong , Wang, Qingshan , Liu, Weiyan , Wang, Yu . The combination effect of preozonation and CNTs layer modification on low-pressure membrane fouling control in treating NOM and EfOM . | JOURNAL OF MEMBRANE SCIENCE , 2021 , 627 . |
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摘要 ：
以腐殖酸(Humic Acid,HA)为研究对象,通过压力辅助过滤技术将碳纳米管(Carbon Nanotubes,CNTs)预涂覆在聚醚砜(Polyethersulfone,PES)平板膜表面,制备了CNTs预涂覆低压膜,分别考察了该膜在恒压和恒流实验中对HA的去除情况及其对膜污染的缓解作用.研究表明,CNTs预涂覆膜可以有效缓解基膜的污染,保证CNTs的分散性,增加PES膜表面预涂覆CNTs的投加量,有助于缓解膜污染的发生;采用径向尺寸小的CNTs制备出的预涂覆低压膜,其抗污染能力更佳.研究进一步采用恒流膜滤装置对膜滤过程的3个阶段(新膜过滤阶段、膜污染加速阶段、堵塞膜截留阶段)进行了模拟...
关键词 ：
低压膜 低压膜 碳纳米管 碳纳米管 腐殖酸 腐殖酸
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| GB/T 7714 | 马燕林 , 栾桂荣 , 薛小雷 et al. 碳纳米管预涂覆低压膜去除水中腐殖酸的机理研究 [J]. | 环境科学学报 , 2020 , 40 (12) : 4279-4288 . |
| MLA | 马燕林 et al. "碳纳米管预涂覆低压膜去除水中腐殖酸的机理研究" . | 环境科学学报 40 . 12 (2020) : 4279-4288 . |
| APA | 马燕林 , 栾桂荣 , 薛小雷 , 王钰 , 刘韦岩 , 王青山 et al. 碳纳米管预涂覆低压膜去除水中腐殖酸的机理研究 . | 环境科学学报 , 2020 , 40 (12) , 4279-4288 . |
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摘要 ：
本发明提供一种上下分层设计制备复合碳纳米材料低压膜的方法。该方法可以提高复合碳纳米材料低压膜去除污染物的性能和膜的力学性能，属于纳米材料与环境工程技术的交叉领域。本发明选用两种分散剂分别制备多壁碳纳米管悬浊液，并进行超声处理使其分散均匀，采用分层设计的理念，将两种多壁碳纳米管悬浊液按照体积比例，利用加压过滤的方式，逐层制备双层碳纳米材料低压膜。制备的表层疏松、底层致密的复合碳纳米材料低压膜，在保证较大通量的同时，有效提高了复合碳纳米材料低压膜去除污染物的性能和膜的力学性能，在水处理中有一定的应用前景。本方法操作简单可行，易于实现。
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| GB/T 7714 | 郭瑾 , 薛小雷 , 马燕林 et al. 一种分层设计提高复合碳纳米材料低压膜性能的方法 : CN202010178617.8[P]. | 2020-03-14 . |
| MLA | 郭瑾 et al. "一种分层设计提高复合碳纳米材料低压膜性能的方法" : CN202010178617.8. | 2020-03-14 . |
| APA | 郭瑾 , 薛小雷 , 马燕林 , 栾桂荣 . 一种分层设计提高复合碳纳米材料低压膜性能的方法 : CN202010178617.8. | 2020-03-14 . |
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摘要 ：
一种强化去除水中腐殖酸并缓解污染的多壁碳纳米管低压膜制备方法属于纳米材料与水处理技术的交叉领域。本发明通过PEG与多壁碳纳米管的共混超声对多壁碳纳米管进行非共价改性，进而通过真空抽滤法制备多壁碳纳米管低压膜。采用PEG非共价改性后的多壁碳纳米管制备的低压膜，能够有效提高水中腐殖酸的去除，并能够显著提高膜的抗污染性能。与普通的0.01μm PVDF超滤膜相比，本发明对腐殖酸的去除提高了近50％，有效缓解了以腐殖酸为代表的腐殖质类有机物和以牛血清蛋白为代表的生物大分子物质产生的膜污染问题，在改善出水水质的同时，延长了膜的使用寿命。本方法操作简单可行，易于实现。
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| GB/T 7714 | 郭瑾 , 栾桂荣 , 马燕林 et al. 一种强化去除水中腐殖酸并缓解污染的多壁碳纳米管低压膜制备方法 : CN202010203323.6[P]. | 2020-03-20 . |
| MLA | 郭瑾 et al. "一种强化去除水中腐殖酸并缓解污染的多壁碳纳米管低压膜制备方法" : CN202010203323.6. | 2020-03-20 . |
| APA | 郭瑾 , 栾桂荣 , 马燕林 , 薛小雷 . 一种强化去除水中腐殖酸并缓解污染的多壁碳纳米管低压膜制备方法 : CN202010203323.6. | 2020-03-20 . |
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摘要 ：
Background Lithium carbonate (Li2CO3) is widely used in the treatment of clinical-affective psychosis. Exposure to Li2CO3 during pregnancy increases the risk of neural tube defects (NTDs) in offspring, which are severe birth defects of the central nervous system. The mechanism of Li2CO3-induced NTDs remains unclear. Methods C57BL/6 mice were injected with different doses of Li2CO3 intraperitoneally on gestational day 7.5 (GD7.5), and embryos collected at GD11.5 and GD13.5. The mechanisms of Li2CO3 exposure-induced NTDs were determined utilizing immunohistochemistry, western blotting, EdU imaging, enzymatic method, gas chromatography-mass spectrometry (GC-MS), ELISA and HE staining. Results The NTDs incidence was 33.7% following Li2CO3 exposure. Neuroepithelial cell proliferation and phosphohistone H3 level were significantly increased in NTDs embryos, compared with control group (P < 0.01), while the expressing levels of p53 and caspase-3 were significantly decreased. IMPase and GSK-3 beta activity was inhibited in Li2CO3-treated maternal and embryonic neural tissues (P < 0.01 and P < 0.05, respectively), along with decreased levels of inositol and metabolites, compared with control groups (P < 0.01). Conclusions Lithium-induced NTDs model in C57BL/6 mice was established. Enhanced cell proliferation and decreased apoptosis following lithium exposure were closely associated with the impairment of inositol biosynthesis, which may contribute to lithium-induced NTDs. Impact Impairment of inositol biosynthesis has an important role in lithium exposure-induced NTDs in mice model. Lithium-induced NTDs model on C57BL/6 mice was established. Based on this NTDs model, lithium-induced impairment of inositol biosynthesis resulted in the imbalance between cell proliferation and apoptosis, which may contribute to lithium-induced NTDs. Providing evidence to further understand the molecular mechanisms of lithium-induced NTDs and enhancing its primary prevention.
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| GB/T 7714 | Li, Shen , Luo, Danqing , Yue, Huixuan et al. Neural tube defects: role of lithium carbonate exposure in embryonic neural development in a murine model [J]. | PEDIATRIC RESEARCH , 2020 , 90 (1) : 82-92 . |
| MLA | Li, Shen et al. "Neural tube defects: role of lithium carbonate exposure in embryonic neural development in a murine model" . | PEDIATRIC RESEARCH 90 . 1 (2020) : 82-92 . |
| APA | Li, Shen , Luo, Danqing , Yue, Huixuan , Lyu, Jianjun , Yang, Yanwei , Gao, Tingting et al. Neural tube defects: role of lithium carbonate exposure in embryonic neural development in a murine model . | PEDIATRIC RESEARCH , 2020 , 90 (1) , 82-92 . |
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摘要 ：
为了探索碳纳米材料膜在水处理中应用的可能性,本实验选取4种径向尺寸的碳纳米管(Carbon Nanotubes, CNTs),采用压力辅助过滤技术制备CNTs自支撑膜.通过对CNTs自支撑膜的平均孔径、孔径分布及截留分子量(Molecular weight Cut-Off,MWCO)等进行分析,研究了CNTs径向尺寸变化对CNTs自支撑膜孔隙结构的影响.结果表明,CNTs的径向尺寸越小,制备得到的CNTs自支撑膜越趋向于形成小孔径的膜孔,且孔径分布更加均匀,孔隙面积比越高,膜的MWCO越小.单壁碳纳米管(Single-walled carbon nanotube, SWNT)与多壁碳纳米管(M...
关键词 ：
孔径分布 孔径分布 碳纳米管 碳纳米管 膜通量 膜通量 平均孔径 平均孔径 截留分子量 截留分子量
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| GB/T 7714 | 祝学东 , 董丹 , 马燕林 et al. 碳纳米管径向尺寸对碳纳米管自支撑膜孔隙结构及通量的影响 [J]. | 环境科学学报 , 2019 , 39 (11) : 3839-3848 . |
| MLA | 祝学东 et al. "碳纳米管径向尺寸对碳纳米管自支撑膜孔隙结构及通量的影响" . | 环境科学学报 39 . 11 (2019) : 3839-3848 . |
| APA | 祝学东 , 董丹 , 马燕林 , 栾桂荣 , 薛小雷 , 刘韦岩 et al. 碳纳米管径向尺寸对碳纳米管自支撑膜孔隙结构及通量的影响 . | 环境科学学报 , 2019 , 39 (11) , 3839-3848 . |
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摘要 ：
采用碳纳米管(carbon nanotube,CNT)对聚偏氟乙烯(polyvinylidene fluoride,PVDF)中空纤维超滤膜进行改性,结合臭氧预氧化技术,考察了臭氧-CNT膜改性联用工艺的阈通量及膜表面污染情况.结果表明,原膜阈通量为45 L·(m~2·h)~(-1),联用工艺下阈通量为81 L·(m~2·h)~(-1),联用工艺相对原膜阈通量提高了约80%;且联用工艺的污染速率最低,约为0. 001 37k Pa·min-1·L-1·m~2·h.相同臭氧投量与CNT负载量下,对比联用工艺阈通量与临界通量运行情况,得出阈通量下运行过水量高于临界通量运行,表明阈通量下运行能够缓解...
关键词 ：
臭氧 臭氧 二级出水 二级出水 碳平衡 碳平衡 碳纳米管 碳纳米管 超滤膜 超滤膜 膜改性 膜改性
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| GB/T 7714 | 王凯伦 , 刘芳 , 关羽琪 et al. 臭氧-CNT膜改性联用工艺阈通量及膜污染分析 [J]. | 环境科学 , 2019 , 40 (02) : 738-746 . |
| MLA | 王凯伦 et al. "臭氧-CNT膜改性联用工艺阈通量及膜污染分析" . | 环境科学 40 . 02 (2019) : 738-746 . |
| APA | 王凯伦 , 刘芳 , 关羽琪 , 祝学东 , 董丹 , 薛小雷 et al. 臭氧-CNT膜改性联用工艺阈通量及膜污染分析 . | 环境科学 , 2019 , 40 (02) , 738-746 . |
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