• Complex
  • Title
  • Keyword
  • Abstract
  • Scholars
  • Journal
  • ISSN
  • Conference
搜索
High Impact Results & Cited Count Trend for Year Keyword Cloud and Partner Relationship

Query:

学者姓名:郭瑾

Refining:

Source

Submit Unfold

Co-Author

Submit Unfold

Language

Submit

Clean All

Sort by:
Default
  • Default
  • Title
  • Year
  • WOS Cited Count
  • Impact factor
  • Ascending
  • Descending
< Page ,Total 9 >
Nitrogen-doped carbon nanotube modified ultrafiltration membrane activating peroxymonosulfate for catalytic transformation of phosphonate and mitigation of membrane fouling SCIE
期刊论文 | 2023 , 314 | SEPARATION AND PURIFICATION TECHNOLOGY
Abstract&Keyword Cite

Abstract :

The nitrogen-doping carbon nanotube modified polyethersulfone membrane (NCNT@PES) was prepared by vacuum-assisted filtration. The catalytic activity and anti-fouling capacity of NCNT@PES/peroxymonosulfate (PMS) system were both systematically investigated. Selecting ethylenediamine tetra(methylene phosphonic acid) (EDTMP) as a target phosphonate, the NCNT@PES/PMS system degraded almost 100% of EDTMP, and about 60% of the total phosphorus (TP) in EDTMP could be transformed into orthophosphate (PO43-) within 1 min. Scavenger experiments and electron paramagnetic resonance (EPR) technique verified that the surface -bound radicals were mainly contributed the degradation and transformation of EDTMP in the NCNT@PES/ PMS system. The presence of HCO3 -, SO42-and NOM weakened the catalytic reactions, nevertheless, the NCNT@PES/PMS system still showed considerable effectiveness on the transformation of EDTMP in real sewage effluent. Moreover, the anti-fouling experiment proved that NCNT@PES/PMS system were superior on the removal of fluorescent components in the real sewage effluent, and their removal rates for the dissolved organic matter (DOC) and UV absorbance at 254 nm (UV254) were also improved. During the filtration cycles, the NCNT@PES/PMS system mitigated the membrane fouling significantly, which had been verified by the slower decline of normalized flux, less ultrapure water flux loss rates and higher ultrapure water flux recovery rates. This study provided a novel but simple way for effective EDTMP decontamination, at the same time, confirmed the potential of NCNT@PES membrane coupled with PMS activation on anti-fouling and water purification ability.

Keyword :

Nitrogen -doping carbon nanotube Nitrogen -doping carbon nanotube Catalytic membrane Catalytic membrane Anti -fouling Anti -fouling Peroxymonosulfate Peroxymonosulfate Phosphonates transformation Phosphonates transformation

Cite:

Copy from the list or Export to your reference management。

GB/T 7714 Wang, Yufei , Wei, Na , Zeng, Jia et al. Nitrogen-doped carbon nanotube modified ultrafiltration membrane activating peroxymonosulfate for catalytic transformation of phosphonate and mitigation of membrane fouling [J]. | SEPARATION AND PURIFICATION TECHNOLOGY , 2023 , 314 .
MLA Wang, Yufei et al. "Nitrogen-doped carbon nanotube modified ultrafiltration membrane activating peroxymonosulfate for catalytic transformation of phosphonate and mitigation of membrane fouling" . | SEPARATION AND PURIFICATION TECHNOLOGY 314 (2023) .
APA Wang, Yufei , Wei, Na , Zeng, Jia , Wu, Yaochen , Zhou, Tong , Liu, Guohan et al. Nitrogen-doped carbon nanotube modified ultrafiltration membrane activating peroxymonosulfate for catalytic transformation of phosphonate and mitigation of membrane fouling . | SEPARATION AND PURIFICATION TECHNOLOGY , 2023 , 314 .
Export to NoteExpress RIS BibTex
Humic acid non-covalent functionalized multi-walled carbon nanotubes composite membrane and its application for the removal of organic dyes SCIE
期刊论文 | 2022 , 10 (2) | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
Abstract&Keyword Cite

Abstract :

It was the first time that humic acid (HA) was used to non-covalent functionalize multi-walled carbon nanotubes (MWCNTs). The MWCNT and HA-MWCNT was characterized by X-ray photoelectron spectroscopy (XPS), infrared spectra (IR) and transmission electron microscopy (TEM). Then, a HA non-covalent functionalized multi walled carbon nanotubes (HA-MWCNTs) membrane was prepared by vacuum filtration and used to remove organic dyes. To investigate the removal mechanism of organic dyes by HA-MWCNTs membrane, the dynamic filtration effectiveness of HA-MWCNTs membrane was compared with the adsorption ability of HA-MWCNTs. The results proved that HA-MWCNTs membrane had a higher effectiveness for the removal of dyes as it had shorter filtration time compared with the static adsorption experiment. Especially, the HA-MWCNTs membrane had a higher removal efficiency for cationic dye methylene blue (MB) than the raw MWCNTs (P-MWCNTs) membrane. The electrostatic interaction played an important role on the removal of MB, and the functionalization of MWCNTs with HA increased the surface electronegativity of MWCNTs membrane, and promoted the removal of MB during filtration process. As for RB19, in addition to 7C-7C stacking interaction, electrostatic interaction also influenced its removal by MWCNTs membrane. Compared with P-MWCNTs membrane, HAMWCNTs membrane slightly decreased the effectiveness of RB19 removal during filtration due to the increased electrostatic repulsion. Generally, the dynamic membrane filtration based on MWCNTs composite membrane could avoid the ecological risk caused by the release of MWCNTs. It provided a new idea for the further innovation of low-pressure membrane technology in the field of dye wastewater treatment.

Keyword :

Static adsorption Static adsorption Membrane filtration Membrane filtration Dynamic filtration Dynamic filtration Functionalization Functionalization HA HA MWCNTs MWCNTs

Cite:

Copy from the list or Export to your reference management。

GB/T 7714 Dong, Mengchan , Guo, Jin , Wang, Yu et al. Humic acid non-covalent functionalized multi-walled carbon nanotubes composite membrane and its application for the removal of organic dyes [J]. | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING , 2022 , 10 (2) .
MLA Dong, Mengchan et al. "Humic acid non-covalent functionalized multi-walled carbon nanotubes composite membrane and its application for the removal of organic dyes" . | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING 10 . 2 (2022) .
APA Dong, Mengchan , Guo, Jin , Wang, Yu , Gai, Xiaoli , Xiong, Xinya , Zeng, Jia et al. Humic acid non-covalent functionalized multi-walled carbon nanotubes composite membrane and its application for the removal of organic dyes . | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING , 2022 , 10 (2) .
Export to NoteExpress RIS BibTex
The combination effect of preozonation and CNTs layer modification on low-pressure membrane fouling control in treating NOM and EfOM SCIE
期刊论文 | 2021 , 627 | JOURNAL OF MEMBRANE SCIENCE
WoS CC Cited Count: 3
Abstract&Keyword Cite

Abstract :

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.

Keyword :

Membrane fouling Membrane fouling Low-pressure membrane (LPM) Low-pressure membrane (LPM) Effluent organic matter (EfOM) Effluent organic matter (EfOM) Preozonation Preozonation Carbon nanotubes (CNTs) Carbon nanotubes (CNTs) Natural organic matter (NOM) Natural organic matter (NOM)

Cite:

Copy from the list or Export to your reference management。

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 .
Export to NoteExpress RIS BibTex
The preparation of double layers low pressure carbon nanotubes membrane EI
会议论文 | 2021 , 647 (1) | 2020 6th International Conference on Advances in Energy Resources and Environment Engineering, ICAESEE 2020
Abstract&Keyword Cite

Abstract :

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.

Keyword :

Microfiltration Microfiltration Carbon nanotubes Carbon nanotubes Ethanol Ethanol Membrane technology Membrane technology Energy resources Energy resources

Cite:

Copy from the list or Export to your reference management。

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) .
Export to NoteExpress RIS BibTex
Down-Regulation of Inpp5e Associated With Abnormal Ciliogenesis During Embryonic Neurodevelopment Under Inositol Deficiency SCIE
期刊论文 | 2021 , 12 | FRONTIERS IN NEUROLOGY
Abstract&Keyword Cite

Abstract :

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.

Keyword :

gene expression gene expression embryonic development embryonic development cilia cilia phosphoinositide 5-phosphatase phosphoinositide 5-phosphatase inositol inositol neural tube defects neural tube defects

Cite:

Copy from the list or Export to your reference management。

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 .
Export to NoteExpress RIS BibTex
Preparation of Ultrafiltration Membrane by Polyethylene Glycol Non-Covalent Functionalized Multi-Walled Carbon Nanotubes: Application for HA Removal and Fouling Control SCIE
期刊论文 | 2021 , 11 (5) | MEMBRANES
Abstract&Keyword Cite

Abstract :

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.

Keyword :

membrane fouling membrane fouling multi-walled carbon nanotubes multi-walled carbon nanotubes polyethylene glycol polyethylene glycol non-covalent functionalization non-covalent functionalization low-pressure membrane low-pressure membrane

Cite:

Copy from the list or Export to your reference management。

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) .
Export to NoteExpress RIS BibTex
Neural tube defects: role of lithium carbonate exposure in embryonic neural development in a murine model SCIE
期刊论文 | 2020 , 90 (1) , 82-92 | PEDIATRIC RESEARCH
WoS CC Cited Count: 1
Abstract&Keyword Cite

Abstract :

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.

Cite:

Copy from the list or Export to your reference management。

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 .
Export to NoteExpress RIS BibTex
碳纳米管预涂覆低压膜去除水中腐殖酸的机理研究 CSCD
期刊论文 | 2020 , 40 (12) , 4279-4288 | 环境科学学报
CNKI Cited Count: 3
Abstract&Keyword Cite

Abstract :

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...

Keyword :

碳纳米管 碳纳米管 低压膜 低压膜 腐殖酸 腐殖酸

Cite:

Copy from the list or Export to your reference management。

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 .
Export to NoteExpress RIS BibTex
Open-Source Public Transportation Mobility Simulation Engine DTALite-S: A Discretized Space–Time Network-Based Modeling Framework for Bridging Multi-agent Simulation and Optimization Scopus
期刊论文 | 2019 , 5 (1) | Urban Rail Transit
Abstract&Keyword Cite

Abstract :

Recently, an open-source light-weight dynamic traffic assignment (DTA) package, namely DTALite, has been developed to allow a rapid utilization of advanced dynamic traffic analysis capabilities. Aiming to bridge the modeling gaps between multi-agent simulation and optimization in a multimodal environment, we further design and develop DTALite-S to simplify the traffic flow dynamic representation details in DTALite for future extensions. We hope to offer a unified modeling framework with inherently consistent space–time network representations for both optimization formulation and simulation process. This paper includes three major modeling components: (1) mathematic formulations to describe traffic and public transportation simulation problem on a space–time network; (2) transportation transition dynamics involving multiple agents in the optimization process; (3) an alternating direction method of multipliers (ADMM)-based modeling structure to link different features between multi-agent simulation and optimization used in transportation. This unified framework can be embedded in a Lagrangian relaxation method and a time-oriented sequential simulation procedure to handle many general applications. We carried out a case study by using this unified framework to simulate the passenger traveling process in Beijing subway network which contains 18 urban rail transit lines, 343 stations, and 52 transfer stations. Via the ADMM-based solution approach, queue lengths at platforms, in-vehicle congestion levels and absolute deviation of travel times are obtained within 1560 seconds.The case study indicate that the open-source DTALite-S integrates simulation and optimization procedure for complex dynamic transportation systems and can efficiently generate comprehensive space-time traveling status. © 2019, The Author(s).

Keyword :

Alternating direction method of multipliers; Dynamic traffic assignment; Lagrangian relaxation; Multi-agent simulation; Space–time network Alternating direction method of multipliers; Dynamic traffic assignment; Lagrangian relaxation; Multi-agent simulation; Space–time network

Cite:

Copy from the list or Export to your reference management。

GB/T 7714 Tong, L. , Pan, Y. , Shang, P. et al. Open-Source Public Transportation Mobility Simulation Engine DTALite-S: A Discretized Space–Time Network-Based Modeling Framework for Bridging Multi-agent Simulation and Optimization [J]. | Urban Rail Transit , 2019 , 5 (1) .
MLA Tong, L. et al. "Open-Source Public Transportation Mobility Simulation Engine DTALite-S: A Discretized Space–Time Network-Based Modeling Framework for Bridging Multi-agent Simulation and Optimization" . | Urban Rail Transit 5 . 1 (2019) .
APA Tong, L. , Pan, Y. , Shang, P. , Guo, J. , Xian, K. , Zhou, X. . Open-Source Public Transportation Mobility Simulation Engine DTALite-S: A Discretized Space–Time Network-Based Modeling Framework for Bridging Multi-agent Simulation and Optimization . | Urban Rail Transit , 2019 , 5 (1) .
Export to NoteExpress RIS BibTex
Effects of simplified methods for hydrodynamic force on seismic responses of circular piers [动水力简化计算方法对圆形桥墩地震反应的影响] Scopus CSCD PKU
期刊论文 | 2019 , 45 (6) , 575-584 | Journal of Beijing University of Technology
Abstract&Keyword Cite

Abstract :

For engineering applications, a variety of simplified analysis models and calculation methods considering the hydrodynamic force have been proposed based on the assumption of incompressible water. Some typical methods include the rigid-structure method, Morison method and a method based on approximation of fundamental-frequency. The seismic responses of elastic cantilever circular piers excited by horizontal earthquake were analyzed to study the difference caused by the above methods. By using 3 ground motion records on soft soil site and selecting a series of depth and wide-depth ratio as parameters, 144 cases of bridge piers were considered. The horizontal displacement at the top of the piers, shearing force and bending moment at the bottom were compared with the exact solutions based on the radiation theory of incompressible water. Then, the range, mean values and coefficient of variation of the relative errors of the peak values of responses were presented. Based on the analysis of errors,calculation accuracy of the simplified methods was investigated and the applicable scope was given preliminarily. © 2019, Editorial Department of Journal of Beijing University of Technology. All right reserved.

Keyword :

Comparison of calculation accuracy; Seismic response of circular piers; Simplified method for hydrodynamic force Comparison of calculation accuracy; Seismic response of circular piers; Simplified method for hydrodynamic force

Cite:

Copy from the list or Export to your reference management。

GB/T 7714 Du, X. , Guo, J. , Zhao, M. et al. Effects of simplified methods for hydrodynamic force on seismic responses of circular piers [动水力简化计算方法对圆形桥墩地震反应的影响] [J]. | Journal of Beijing University of Technology , 2019 , 45 (6) : 575-584 .
MLA Du, X. et al. "Effects of simplified methods for hydrodynamic force on seismic responses of circular piers [动水力简化计算方法对圆形桥墩地震反应的影响]" . | Journal of Beijing University of Technology 45 . 6 (2019) : 575-584 .
APA Du, X. , Guo, J. , Zhao, M. , Wang, P. . Effects of simplified methods for hydrodynamic force on seismic responses of circular piers [动水力简化计算方法对圆形桥墩地震反应的影响] . | Journal of Beijing University of Technology , 2019 , 45 (6) , 575-584 .
Export to NoteExpress RIS BibTex
10| 20| 50 per page
< Page ,Total 9 >

Export

Results:

Selected

to

Format:
Online/Total:1179/2208452
Address:BJUT Library(100 Pingleyuan,Chaoyang District,Beijing 100124, China Post Code:100124) Contact Us:010-67392185
Copyright:BJUT Library Technical Support:Beijing Aegean Software Co., Ltd.