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Iterative HOEO fusion strategy: a promising tool for enhancing bearing fault feature

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 1, doi: 10.1007/s11465-022-0725-z

Abstract: To address these issues, this paper presents a novel EO fusion strategy for enhancing the bearing faultSpecifically, the proposed strategy is conducted through the following three steps.MDIM is regarded as the fusion source of the proposed strategy with the properties of improving the signal-to-interferenceSimulation studies and experimental verifications confirm that the proposed strategy is more effectivefor enhancing the bearing fault feature than the existing methods, including HOEOs, the weighting HOEO

Keywords： higher order energy operator     fault diagnosis     manifold learning     rolling element bearing     information fusion    

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Firm innovation system: Paths for enhancing corporate indigenous innovation capability

Jin CHEN, Ximing YIN, Jizhen LI

Frontiers of Engineering Management 2020, Volume 7, Issue 3,   Pages 404-412 doi: 10.1007/s42524-020-0116-2

Abstract: emerging economies must develop strong indigenous innovation capabilities through the coevolution of strategyThis study contributes to the systematic approach for enhancing corporate indigenous innovation capability

Keywords： innovation-driven strategy     firm innovation system     national innovation system     holistic innovation theory    

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Developing “precise-acting” strategies for improving anaerobic methanogenesis of organic waste: Insights from the electron transfer system of syntrophic partners

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 6, doi: 10.1007/s11783-021-1508-1

Abstract: with insights from the electron transfer system of syntrophic partners and provided potential targeted enhancingstrategy for high-efficiency electron transfer system.

Keywords： Methanogenesis     Anaerobic digestion     Enhancing strategy     Electron transfer     Organic waste    

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EMBRYOGENESIS ABUNDANT FAMILY GENE FROM PONCIRUS TRIFOLIATA, CONFERS ENHANCED DROUGHT TOLERANCE BY ENHANCING

Frontiers of Agricultural Science and Engineering 2021, Volume 8, Issue 2,

Abstract: Collectively, this study demonstrates that PtrLEA7 can confer enhanced drought tolerance partially via enhancing
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Unravelling the bottleneck of phosphonic acid anchoring groups aiming toward enhancing the stability

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 7,   Pages 1060-1078 doi: 10.1007/s11705-021-2117-z

Abstract: Novel near-infrared sensitizers with different anchoring groups aiming toward improved stability and efficiency of dye-sensitized solar cells were synthesized. Adsorption of these dyes on the mesoporous TiO2 surface revealed the dye adsorption rate of –CH=CH–COOH (SQ-139)>–CH=C(CN)COOH (SQ-140)>–PO3H2 (SQ-143)>–CH=C(CN)PO3H2 (SQ-148)>–CH=C(CN)PO3H–C2H5 (SQ-157)>–PO3H–C2H5 (SQ-151)>–CH=CH–COOH(–PO3H2) (SQ-162). The binding strength of these dyes on mesoporous TiO2 as investigated by dye desorption studies follows SQ-162>SQ-143>SQ-148>SQ-139>SQ-157~SQ-151>SQ-140 order. The acrylic acid anchoring group was demonstrated to be an optimum functional group owing to its fast dye adsorption rate and better binding strength on TiO2 along with good photoconversion efficiency. Results of dye binding on TiO2 surface demonstrated that SQ-162 bearing double anchoring groups of phosphonic and acrylic acid exhibited>550 times stronger binding as compared to dye SQ-140 having cyanoacrylic acid anchoring group. SQ-140 exhibited the best photovoltaic performance with photon harvesting mainly in the far-red to near-infrared wavelength region having short circuit current density, open-circuit voltage and fill factor of 14.28 mA·cm–2, 0.64 V and 0.65, respectively, giving the power conversion efficiency of 5.95%. Thus, dye SQ-162 not only solved the problem of very poor efficiency of dye bearing only phosphonic acid while maintaining the extremely high binding strength opening the path for the design and development of novel near-infrared dyes with improved efficiency and stability by further increasing the π-conjugation.

Keywords： anchoring groups     adsorption behaviour     dye-binding strength     squaraine dyes     dye-sensitized solar cells    

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Reutilize tire in microbial fuel cell for enhancing the nitrogen removal of the anammox process coupled

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 6, doi: 10.1007/s11783-021-1409-3

Abstract:

• MFC promoted the nitrogen removal of anammox with Fe-C micro-electrolysis.

Keywords： Waste tire     MFCs     Micro-electrolysis     Anammox     Feammox    

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Erratum to: Synthesis of hierarchical nanohybrid CNT@Ni-PS and its applications in enhancing the tribological

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 10,   Pages 1530-1530 doi: 10.1007/s11705-022-2240-5

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Catalytic steam reforming of tar for enhancing hydrogen production from biomass gasification: a review

Ru Shien TAN, Tuan Amran TUAN ABDULLAH, Anwar JOHARI, Khairuddin MD ISA

Frontiers in Energy 2020, Volume 14, Issue 3,   Pages 545-569 doi: 10.1007/s11708-020-0800-2

Abstract: Presently, the global search for alternative renewable energy sources is rising due to the depletion of fossil fuel and rising greenhouse gas (GHG) emissions. Among alternatives, hydrogen (H ) produced from biomass gasification is considered a green energy sector, due to its environmentally friendly, sustainable, and renewable characteristics. However, tar formation along with syngas is a severe impediment to biomass conversion efficiency, which results in process-related problems. Typically, tar consists of various hydrocarbons (HCs), which are also sources for syngas. Hence, catalytic steam reforming is an effective technique to address tar formation and improve H production from biomass gasification. Of the various classes in existence, supported metal catalysts are considered the most promising. This paper focuses on the current researching status, prospects, and challenges of steam reforming of gasified biomass tar. Besides, it includes recent developments in tar compositional analysis, supported metal catalysts, along with the reactions and process conditions for catalytic steam reforming. Moreover, it discusses alternatives such as dry and autothermal reforming of tar.

Keywords： hydrogen     biomass gasification     tar     steam reforming     catalyst    

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Erratum to: Enhancing the photoelectrochemical performance of p-silicon through TiO coating decorated

Frontiers in Energy 2022, Volume 16, Issue 5,   Pages 876-877 doi: 10.1007/s11708-022-0832-x

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Bioremediation of highly contaminated oilfield soil: Bioaugmentation for enhancing aromatic compounds

Jun QIAO, Chengdong ZHANG, Shuiming LUO, Wei CHEN

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 2,   Pages 293-304 doi: 10.1007/s11783-013-0561-9

Abstract: This study evaluated the effectiveness of different amendments—including a commercial NPK fertilizer, a humic substance (HS), an organic industrial waste (NovoGro), and a yeast-bacteria consortium—in the remediation of highly contaminated (up to 6% of total petroleum hydrocarbons) oilfield soils. The concentrations of hydrocarbon, soil toxicity, physicochemical properties of the soil, microbial population numbers, enzyme activities and microbial community structures were examined during the 90-d incubation. The results showed that the greatest degradation of total petroleum hydrocarbons (TPH) was observed with the biostimulation using mixture of NPK, HS and NovoGro, a treatment scheme that enhanced both dehydrogenase and lipase activities in soil. Introduction of exogenous hydrocarbon-degrading bacteria (in addition to biostimulation with NPK, HS and NovoGro) had negligible effect on the removal of TPH, which was likely due to the competition between exogenous and autochthonous microorganisms. Nonetheless, the addition of exogenous yeast-bacteria consortium significantly enhanced the removal of the aromatic fraction of the petroleum hydrocarbons, thus detoxifying the soil. The effect of bioaugmentation on the removal of more recalcitrant petroleum hydrocarbon fraction was likely due to the synergistic effect of bacteria and fungi.

Keywords： bioremediation     petroleum hydrocarbon     biostimulation     bioaugmentation    

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Interface engineering for enhancing electrocatalytic oxygen evolution reaction of CoS/CeO heterostructures

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 3,   Pages 376-383 doi: 10.1007/s11705-021-2062-x

Abstract: To realize renewable energy conversion, it is important to develop low-cost and high-efficiency electrocatalyst for oxygen evolution reaction. In this communication, a novel bijunction CoS/CeO2 electrocatalyst grown on carbon cloth is prepared by the interface engineering. The interface engineering of CoS and CeO2 facilitates a rapid charge transfer from CeO2 to CoS. Such an electrocatalyst exhibits outstanding electrocatalytic activity with a low overpotential of 311 mV at 10 mA∙cm−2 and low Tafel slope of 76.2 mV∙dec–1, and is superior to that of CoS (372 mV) and CeO2 (530 mV) counterparts. And it has long-term durability under alkaline media.

Keywords： interface engineering     CoS/CeO2     electrodeposition     electrocatalyst     oxygen evolution reaction    

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Enhancing thermostability of -mannanase by protective additives

LIU Zhaohui, QI Wei, WU Weina, LIU Yue, HE Zhimin

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 4,   Pages 439-442 doi: 10.1007/s11705-008-0062-8

Abstract: The effects of some sugars (glucose, mannose, fructose, sucrose and chitosan) and polyols (glycol, glycerol and sorbitol) as protective additive on the thermostability of -mannanase were studied. The optimal reaction temperatures of -mannanase and the thermodynamics and the deactivation kinetics with or without additives were also investigated. The experimental results show that sucrose, chitosan and sorbitol could apparently improve the thermal stability of -mannanase when their concentration was kept at 2 g/L. The optimal combination additive proportion was sucrose: chitosan : sorbitol = 1 : 2 : 2 (molar ratio) using the orthogonal experimental design. The sucrose, chitosan, glycerol, sorbitol and the combination additive might increase the optimal reaction temperature from 50°C to about 60°C due to their good protection effect. The thermal deactivation curves of -mannanase accorded with the kinetic rules of first order reaction, and the corresponding kinetic and thermodynamic parameters were calculated. Meanwhile, the protective mechanism of the additives against deactivation of enzyme was also discussed.

Keywords： protective additive     g/L     orthogonal experimental     combination additive     corresponding    

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syntrophic propionate-oxidizing microflora and its bioaugmentation on anaerobic wastewater treatment for enhancing

Chong Liu, Jianzheng Li, Shuo Wang, Loring Nies

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 4, doi: 10.1007/s11783-016-0856-8

Abstract: Syntrophic propionate-oxidizing microflora B83 was enriched from anaerobic sludge. The bioaugmentation of microflora B83 were evaluated from wastewater treatment. Methane yield and COD removal were enhanced by bioaugmentation of microflora B83. Hydrogen-producing acetogensis was a rate-limiting step in methane fermentation. Methane fermentation process can be restricted and even destroyed by the accumulation of propionate because it is the most difficult to be anaerobically oxidized among the volatile fatty acids produced by acetogenesis. To enhance anaerobic wastewater treatment process for methane production and COD removal, a syntrophic propionate-oxidizing microflora B83 was obtained from an anaerobic activated sludge by enrichment with propionate. The inoculation of microflora B83, with a 1:9 ratio of bacteria number to that of the activated sludge, could enhance the methane production from glucose by 2.5 times. With the same inoculation dosage of the microflora B83, COD removal in organic wastewater treatment process was improved from 75.6% to 86.6%, while the specific methane production by COD removal was increased by 2.7 times. Hydrogen-producing acetogenesis appeared to be a rate-limiting step in methane fermentation, and the enhancement of hydrogen-producing acetogens in the anaerobic wastewater treatment process had improved not only the hydrogen-producing acetogenesis but also the acidogenesis and methanogenesis.

Keywords： Anaerobic wastewater treatment     Methane production     Hydrogen-producing acetogenesis     Methanogenesis     Rate-limiting step     Bioaugmentation    

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Erratum to: Multifunctional peptide conjugated amphiphilic cationic copolymer for enhancing ECs targeting

Xinghong Duo, Lingchuang Bai, Jun Wang, Jintang Guo, Xiangkui Ren, Shihai Xia, Wencheng Zhang, Abraham Domb, Yakai Feng

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 1,   Pages 220-220 doi: 10.1007/s11705-020-1995-9

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Optimization of microwave pretreatment of lignocellulosic waste for enhancing methane production: Hyacinth

Bai-Hang Zhao, Jie Chen, Han-Qing Yu, Zhen-Hu Hu, Zheng-Bo Yue, Jun Li

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 6, doi: 10.1007/s11783-017-0965-z

Abstract: The effect of microwave pretreatment on the anaerobic degradation of hyacinth was investigated using response surface methodology (RSM). The components of lignin and the other constituents of hyacinth were altered by microwave pretreatment. Comparison of the near-infrared spectra of hyacinth pretreated by microwave irradiation and water-heating pretreatment revealed that no new compounds were generated during hyacinth pretreatment by microwave irradiation. Atomic force microscopy observations indicated that the physical structures of hyacinth were disrupted by microwave pretreatment. The yield of methane per gram of the microwave-irradiated substrate increased by 38.3% as compared to that of the substrate pretreated via water-heating. A maximum methane yield of 221 mL·g-sub was obtained under the optimum pretreatment conditions (substrate concentration (PSC) = 20.1 g·L and pretreatment time (PT) = 14.6 min) using RSM analysis. A maximum methane production rate of 0.76 mL·h ·g-sub was obtained by applying PSC= 9.5 g·L and PT= 11 min. Interactive item coefficient analysis showed that methane production was dependent on the PSC and PT, separately, whereas the interactive effect of the PSC and PT on methane production was not significant. The same trend was also observed for the methane production rate.

Keywords： Microwave pretreatment     Response surface methodology     Methane production     Hyacinth     Anaerobic digestion    

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Title Author Date Type Operation

Iterative HOEO fusion strategy: a promising tool for enhancing bearing fault feature

Journal Article

Firm innovation system: Paths for enhancing corporate indigenous innovation capability

Jin CHEN, Ximing YIN, Jizhen LI

Journal Article

Developing “precise-acting” strategies for improving anaerobic methanogenesis of organic waste: Insights from the electron transfer system of syntrophic partners

Journal Article

EMBRYOGENESIS ABUNDANT FAMILY GENE FROM PONCIRUS TRIFOLIATA, CONFERS ENHANCED DROUGHT TOLERANCE BY ENHANCING

Journal Article

Unravelling the bottleneck of phosphonic acid anchoring groups aiming toward enhancing the stability

Journal Article

Reutilize tire in microbial fuel cell for enhancing the nitrogen removal of the anammox process coupled

Journal Article

Erratum to: Synthesis of hierarchical nanohybrid CNT@Ni-PS and its applications in enhancing the tribological

Journal Article

Catalytic steam reforming of tar for enhancing hydrogen production from biomass gasification: a review

Ru Shien TAN, Tuan Amran TUAN ABDULLAH, Anwar JOHARI, Khairuddin MD ISA

Journal Article

Erratum to: Enhancing the photoelectrochemical performance of p-silicon through TiO coating decorated

Journal Article

Bioremediation of highly contaminated oilfield soil: Bioaugmentation for enhancing aromatic compounds

Jun QIAO, Chengdong ZHANG, Shuiming LUO, Wei CHEN

Journal Article

Interface engineering for enhancing electrocatalytic oxygen evolution reaction of CoS/CeO heterostructures

Journal Article

Enhancing thermostability of -mannanase by protective additives

LIU Zhaohui, QI Wei, WU Weina, LIU Yue, HE Zhimin

Journal Article

syntrophic propionate-oxidizing microflora and its bioaugmentation on anaerobic wastewater treatment for enhancing

Chong Liu, Jianzheng Li, Shuo Wang, Loring Nies

Journal Article

Erratum to: Multifunctional peptide conjugated amphiphilic cationic copolymer for enhancing ECs targeting

Xinghong Duo, Lingchuang Bai, Jun Wang, Jintang Guo, Xiangkui Ren, Shihai Xia, Wencheng Zhang, Abraham Domb, Yakai Feng

Journal Article

Optimization of microwave pretreatment of lignocellulosic waste for enhancing methane production: Hyacinth

Bai-Hang Zhao, Jie Chen, Han-Qing Yu, Zhen-Hu Hu, Zheng-Bo Yue, Jun Li

Journal Article