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Nitrogen removal efficiencies and microbial communities in full-scale IFAS and MBBR municipal wastewater treatment plants at high COD:N ratio

Supaporn Phanwilai, Naluporn Kangwannarakul, Pongsak (Lek) Noophan, Tamao Kasahara, Akihiko Terada, Junko Munakata-Marr, Linda Ann Figueroa

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 6, doi: 10.1007/s11783-020-1374-2

Abstract: Abstract • Two IFAS and two MBBR full-scale systems (high COD:N ratio 8:1) were characterized. • HighIFAS water resource recovery facilities (WRRFs) used AnodkalnessTM K1 carriers (KC) at Broomfield, ColoradoInfluent COD to N ratios ranged from 8:1 to 15:1.

Keywords： IFAS     MBBR     AnodkalnessTM K1 carrier     Polypropylene resin carrier     Sponge carrier    

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High-level expression of recombinant IgG1 by CHO K1 platform

Ningning Xu, Jianfa Ou, Al-Karim (Al) Gilani, Lufang Zhou, Margaret Liu

Frontiers of Chemical Science and Engineering 2015, Volume 9, Issue 3,   Pages 376-380 doi: 10.1007/s11705-015-1531-5

Abstract: The Chinese Hamster Ovary (CHO K1) cell was used to express a targeted anti-cancer monoclonal antibodyThe adherent CHO K1 was first adapted to suspension culture in chemical defined medium.synthetase (GS) vector was applied to construct a single plasmid to overexpress a monoclonal antibody IgG1.The best cell pool of CHO K1/IgG1 was used to screen the top single clone using the limiting dilutionFinally, a high IgG1 production of 780 mg/L was obtained from a batch culture.

Keywords： Chinese hamster ovary (CHO)     monoclonal antibody     IgG1     amplification     cell line development    

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Ultraviolet-B induced expression of hypoxia-inducible factor 1α, transferrin receptor through EGFR/PI3K/AKT/DEC1 pathway

LI Yanhua, BI Zhigang

Frontiers of Medicine 2007, Volume 1, Issue 1,   Pages 79-86 doi: 10.1007/s11684-007-0016-4

Abstract: (HIF-1α) and transferrin receptor (TfR).The EGFR/PI3K/AKT signaling pathway was required for the induction of HIF-1α and TfR expression inducedPI3K inhibitors, LY294002 and wortmannin, inhibited HIF-1?In contrast, DEC1 (+/+) HaCat cells strongly enhanced TfR and HIF-1?We conclude that UVB induces TfR and HIF-1αexpressions via EGFR/PI3K/AKT/DEC1 signaling pathway.
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Insight into the role of cholesterol in modulation of morphology and mechanical properties of CHO-K1

Lei Zhang, Lisha Zhao, Ping-Kai Ouyang, Pu Chen

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 1,   Pages 98-107 doi: 10.1007/s11705-018-1775-y

Abstract: In this study, the effects of cholesterol on the topography and mechanical behaviors of CHO-K1 cells

Keywords： cholesterol     methyl-β-cyclodextrin     atomic force microscopy     Young’s modulus     CHO-K1 cell    

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Visible-light-driven heterostructured g-CN/Bi-TiO floating photocatalyst with enhanced charge carrier

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 6, doi: 10.1007/s11783-021-1417-3

Abstract:

• Bi doping in TiO2 enhanced the separation of photo-generated electron-hole.

Keywords： Bi doping     Visible light     Algal removal     Charge carrier separation    

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Charge-carrier photogeneration and extraction dynamics of polymer solar cells probed by a transient photocurrent

Boa Jin, Hyunmin Park, Yang Liu, Leijing Liu, Jongdeok An, Wenjing Tian, Chan Im

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 1,   Pages 164-179 doi: 10.1007/s11705-020-1976-z

Abstract: photogenerated charge carriers within polymer-based bulk-heterojunction-type solar cells, the charge-carriercarriers, the external quantum efficiencies as well as the extraction quantum efficiencies of the charge-carrierSubsequently, the charge-carrier concentration-dependent mobility values were obtained, and they arediscussed in consideration of the additional influences of the charge-carrier losses from the deviceduring the charge-carrier extraction that also affects the photocurrent-trace shape.

Keywords： charge-carrier photogeneration     transient photocurrent     polymer solar cells     charge-carrier extraction     space    

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Comprehensive performance analysis and optimization of 1,3-dimethylimidazolylium dimethylphosphate-water

Gorakshnath TAKALKAR, Ahmad K. SLEITI

Frontiers in Energy 2022, Volume 16, Issue 3,   Pages 521-535 doi: 10.1007/s11708-021-0720-9

Abstract: The energy and exergy analyses of the absorption refrigeration system (ARS) using H O-[mmim][DMP] mixture were investigated for a wide range of temperature. The equilibrium Dühring ( - - ) and enthalpy ( - - ) of mixture were assessed using the excess Gibbs free non-random two liquid (NRTL) model for a temperature range of 20°C to 140°C and from 0.1 to 0.9. The performance validation of the ARS cycle showed a better coefficient of performance (COP) of 0.834 for H O-[mmim][DMP] in comparison to NH -H O, H O-LiBr, H O-[emim][DMP], and H O-[emim][BF4]. Further, ARS performances with various operating temperatures of the absorber ( ), condenser ( ), generator ( ), and evaporator ( ) were simulated and optimized for a maximum COP and exergetic COP (ECOP). The effects of from 50°C to 150°C and and from 30°C to 50°C on COP and ECOP, the , , and circulation ratio (CR) of the ARS were evaluated and optimized for from 5°C to 15°C. The optimization revealed that needed to achieve a maximum COP which was more than that for a maximum ECOP. Therefore, this investigation provides criteria to select low grade heat source temperature. Most of the series flow of the cases of cooling water from the condenser to the absorber was found to be better than the absorber to the condenser.

Keywords： ionic liquid driven absorption cycle     H2O-[mmim][DMP]     coefficient of performance (COP)     exergy analysis     thermodynamics mixture property    

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Multi-objective genetic algorithms based structural optimization and experimental investigation of the planet carrier

Pengxing YI,Lijian DONG,Tielin SHI

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 4,   Pages 354-367 doi: 10.1007/s11465-014-0319-5

Abstract:

To improve the dynamic performance and reduce the weight of the planet carrier in wind turbine gearboxFirstly, the design points’ distribution for the design variables of the planet carrier is establishedAs well, this method is applied to design and optimize the planet carrier in a 1.5 MW wind turbine gearboxCompared with the original design, the mass and the stress of the optimized planet carrier are respectivelyConsequently, the cost of planet carrier is greatly reduced and its stability is also improved.

Keywords： planet carrier     multi-objective optimization     genetic algorithms     wind turbine gearbox     modal experiment    

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Effects of carrier-attached biofilm on oxygen transfer efficiency in a moving bed biofilm reactor

Yanling WEI,Xunfei YIN,Lu QI,Hongchen WANG,Yiwei GONG,Yaqian LUO

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 3,   Pages 569-577 doi: 10.1007/s11783-015-0822-x

Abstract: Three laboratory-scale moving bed biofilm reactors (MBBR) with different carrier filling ratios rangingfrom 40% to 60% were used to study the effects of carrier-attached biofilm on oxygen transfer efficiencyThese results were compared to αSOTE of wastewater with a clean carrier (no biofilm attached).conditions, αSOTE decreased by approximately 70% as compared to αSOTE of wastewater at a different carrier-fillingThis indicated that the biofilm attached to the carrier had a negative effect on αSOTE.

Keywords： carrier     biofilm     oxygen transfer efficiency     moving bed biofilm reactor    

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Effects of BTA2 as the third component on the charge carrier generation and recombination behavior of

Leijing Liu, Hao Zhang, Bo Xiao, Yang Liu, Bin Xu, Chen Wang, Shanpeng Wen, Erjun Zhou, Gang Chen, Chan Im, Wenjing Tian

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 1,   Pages 127-137 doi: 10.1007/s11705-020-1936-7

Abstract: Effects of a benzotriazole (BTA)-based small molecule, BTA2, as the third component on the charge carriergeneration and recombination behavior of poly[[4,8-bis[(2-ethylhexyl)oxy]benzo[1,2-b:4,5-b']dithiopheneaggravates the phase separation between the donor and the acceptor, which is disadvantageous to charge carrier

Keywords： third component     organic solar cells     charge carrier generation     charge carrier recombination     bimolecular    

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Reduction kinetics of SrFeO/CaO∙MnO nanocomposite as effective oxygen carrier for chemical looping partial

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 12,   Pages 1726-1734 doi: 10.1007/s11705-022-2188-5

Abstract: Avrami–Erofeyev equation with n = 3 (A3 model) with an activation energy of 59.8 kJ∙mol‒1<

Keywords： chemical looping reforming     SrFeO3−δ/CaO·MnO nanocomposite     reduction kinetics     Avrami–Erofeyev model     pressure-dependent term    

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synthesis of diphenyl carbonate over heterogeneous catalyst: effects of structure of substituted perovskite carrier

WU Guangwen, JIN Fang, WU Yuxin, ZHANG Guangxu, LI Dinghuo, WANG Cunwen, MA Peisheng

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 1,   Pages 59-64 doi: 10.1007/s11705-007-0012-x

Abstract: Also, this improved the redox process of the carrier by transferring electrons and activities of catalysts

Keywords： photoelectron spectroscopy     diphenyl carbonate     proportion     diffraction     perovskite    

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Effects of pressure and temperature on fixed-site carrier membrane for CO 2 separation from natural gas

Meng WANG, Dongxiao YANG, Zhi WANG, Jixiao WANG, Shichang WANG,

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 2,   Pages 127-132 doi: 10.1007/s11705-009-0231-4

Abstract: In this paper, the effect of testing temperature on the performance of fixed carrier membrane for CO

Keywords： temperature increment     high pressure     permselectivity     separation performance     temperature    

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Cell carrier function of hollow-fiber membrane in rotating wall vessel bioreactor

SONG Kedong, LIU Tianqing, ZHAO Hu, LI Xiangqin, MA Xuehu, CUI Zhanfeng

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 1,   Pages 34-39 doi: 10.1007/s11705-008-0022-3

Abstract: studied in a rotating wall hollow-fiber membrane bioreactor (RWHMB) by using hollow-fiber membrane as the carrierFor the sake of contrast, cells were also expanded in a T-flask using a hollow-fiber membrane as carrier

Keywords： RWHMB     microcarrier     hematoxylin-eosin     von-Kossa staining     propitious    

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New Insight into the Development of Oxygen Carrier Materials for Chemical Looping Systems Review

Zhuo Cheng, Lang Qin, Jonathan A. Fan, Liang-Shih Fan

Engineering 2018, Volume 4, Issue 3,   Pages 343-351 doi: 10.1016/j.eng.2018.05.002

Abstract: In recent years, there have been significant advances in oxygen carrier materials for various chemicalThis review discusses recent advances in the development of oxygen carrier materials and the mechanismsThese advances will facilitate the development of oxygen carrier materials for more efficient chemical

Keywords： Chemical looping     Oxygen carrier     Hydrocarbon conversion     Ionic diffusion     Mechanism    

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Title Author Date Type Operation

Nitrogen removal efficiencies and microbial communities in full-scale IFAS and MBBR municipal wastewater treatment plants at high COD:N ratio

Supaporn Phanwilai, Naluporn Kangwannarakul, Pongsak (Lek) Noophan, Tamao Kasahara, Akihiko Terada, Junko Munakata-Marr, Linda Ann Figueroa

Journal Article

High-level expression of recombinant IgG1 by CHO K1 platform

Ningning Xu, Jianfa Ou, Al-Karim (Al) Gilani, Lufang Zhou, Margaret Liu

Journal Article

Ultraviolet-B induced expression of hypoxia-inducible factor 1α, transferrin receptor through EGFR/PI3K/AKT/DEC1 pathway

LI Yanhua, BI Zhigang

Journal Article

Insight into the role of cholesterol in modulation of morphology and mechanical properties of CHO-K1

Lei Zhang, Lisha Zhao, Ping-Kai Ouyang, Pu Chen

Journal Article

Visible-light-driven heterostructured g-CN/Bi-TiO floating photocatalyst with enhanced charge carrier

Journal Article

Charge-carrier photogeneration and extraction dynamics of polymer solar cells probed by a transient photocurrent

Boa Jin, Hyunmin Park, Yang Liu, Leijing Liu, Jongdeok An, Wenjing Tian, Chan Im

Journal Article

Comprehensive performance analysis and optimization of 1,3-dimethylimidazolylium dimethylphosphate-water

Gorakshnath TAKALKAR, Ahmad K. SLEITI

Journal Article

Multi-objective genetic algorithms based structural optimization and experimental investigation of the planet carrier

Pengxing YI,Lijian DONG,Tielin SHI

Journal Article

Effects of carrier-attached biofilm on oxygen transfer efficiency in a moving bed biofilm reactor

Yanling WEI,Xunfei YIN,Lu QI,Hongchen WANG,Yiwei GONG,Yaqian LUO

Journal Article

Effects of BTA2 as the third component on the charge carrier generation and recombination behavior of

Leijing Liu, Hao Zhang, Bo Xiao, Yang Liu, Bin Xu, Chen Wang, Shanpeng Wen, Erjun Zhou, Gang Chen, Chan Im, Wenjing Tian

Journal Article

Reduction kinetics of SrFeO/CaO∙MnO nanocomposite as effective oxygen carrier for chemical looping partial

Journal Article

synthesis of diphenyl carbonate over heterogeneous catalyst: effects of structure of substituted perovskite carrier

WU Guangwen, JIN Fang, WU Yuxin, ZHANG Guangxu, LI Dinghuo, WANG Cunwen, MA Peisheng

Journal Article

Effects of pressure and temperature on fixed-site carrier membrane for CO 2 separation from natural gas

Meng WANG, Dongxiao YANG, Zhi WANG, Jixiao WANG, Shichang WANG,

Journal Article

Cell carrier function of hollow-fiber membrane in rotating wall vessel bioreactor

SONG Kedong, LIU Tianqing, ZHAO Hu, LI Xiangqin, MA Xuehu, CUI Zhanfeng

Journal Article

New Insight into the Development of Oxygen Carrier Materials for Chemical Looping Systems

Zhuo Cheng, Lang Qin, Jonathan A. Fan, Liang-Shih Fan

Journal Article