Article
Engineering, Mechanical
Farouk Maaboudallah, Noureddine Atalla
Summary: This study presents an extension of the eXtended Fourier Amplitude Sensitivity Test (eXFAST) algorithm for solving friction-induced vibration problems. The proposed method combines the advantages of the eXFAST methodology and a new procedure to enhance convergence when estimating the main and total interaction effects of models with strong nonlinearities. The method is benchmarked using well-known polynomial models and shows solid performance compared to Monte Carlo and the classic eXFAST algorithm without re-sampling. Additionally, the method is coupled with the finite element method to predict the dynamic instabilities of a brake system, achieving accurate results with reduced computational cost.
NONLINEAR DYNAMICS
(2023)
Article
Engineering, Aerospace
Ahmad Ali Pohya, Kai Wicke, Thomas Kilian
Summary: This study evaluates the efficacy of Hybrid Laminar Flow Control (HLFC) in aeronautic product development through global sensitivity analysis and discrete event simulation, finding cruise mach speed as the dominant factor of overall uncertainty and providing guidance for further research and development efforts regarding HLFC.
AEROSPACE SCIENCE AND TECHNOLOGY
(2022)
Article
Nutrition & Dietetics
Martina Kosic, Maja Benkovic, Tamara Jurina, Davor Valinger, Jasenka Gajdos Kljusuric, Ana Jurinjak Tusek
Summary: Lipid metabolism was mathematically simulated and analyzed to understand its dynamics. Sensitivity analysis showed that uncertainty in model parameters arises from the interactions of multiple factors, rather than being linear. These findings have significant implications for patients and healthcare professionals involved in regulating lipid metabolism.
Article
Green & Sustainable Science & Technology
Feifei Wu, Xiaohua Yang, Bing Lian, Yan Wang, Jing Kang
Summary: This study established a theoretical framework of human settlements based on different subsystems and determined evaluation indicators considering the coupling effect among them. The global sensitivity analysis was used to determine indicator weights for evaluating the suitability of human settlements in 30 provinces of China between 2000 and 2016. The findings show that human settlement suitability has improved overall, with eastern provinces having higher suitability and growth rates compared to western provinces. The nature subsystem has become a limiting factor for improving human settlement suitability, especially in economically developed provinces.
Article
Engineering, Electrical & Electronic
Xiaobing Liao, Min Zhang, Jian Le, Lina Zhang, Zicheng Li
Summary: This paper studies a global sensitivity analysis method of static voltage stability based on an extended affine model. The analysis of simulation results shows that this method can effectively suppress the effect of interval expansion and accurately determine the importance of input interval variables.
ELECTRIC POWER SYSTEMS RESEARCH
(2022)
Article
Engineering, Chemical
David J. Kovacs, Zhong Li, Brian W. Baetz, Youngseck Hong, Sylvain Donnaz, Xiaokun Zhao, Pengxiao Zhou, Huihuang Ding, Qirong Dong
Summary: In this study, machine learning techniques were used to build models that can predict transmembrane pressure (TMP) at different stages of the membrane bioreactors (MBRs) production cycle. The models provide reliable predictions, with the random forest (RF) model showing the highest accuracy. These models can be valuable tools for decision support in wastewater treatment plants, leading to cost reduction.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Physics, Multidisciplinary
Xiang He, Yongbo Yuan
Summary: This study revisited the quantitative relationship between the disaster level and the parameters defining cascade dynamics in order to identify critical factors and thresholds for suppressing disaster outbreaks. It used a global sensitivity analysis framework to examine the variations in the disaster level and the synchronous influences of parameters and their interactions. The study found that individual or interactive influences of a small fraction of parameters dominated the variation in the disaster level, and each parameter's influence was significantly time-varying and different. The propagation structure and distance from the initial disturbance significantly affected the disaster evolution and parameter influence on each network component.
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
(2022)
Article
Mathematics, Interdisciplinary Applications
Farouk Maaboudallah, Noureddine Atalla
Summary: This paper discusses the modeling and prediction of dynamic instabilities in a rubbing system, introducing two hybrid approaches for analysis. It applies stochastic algorithms coupled with FEM using complex eigenvalue analysis. Results show that the FAST-FE solver is more robust and computationally efficient compared to the commonly used MC-FE for such problems.
COMPUTATIONAL MECHANICS
(2021)
Article
Computer Science, Artificial Intelligence
Ahmad Hosseini, Mir Saman Pishvaee
Summary: This study conducts stability analysis and reliability assessment of uncertain transportation networks, introducing a mathematical model based on uncertainty theory for post-crisis rescue and on-time vehicle arrival in disaster areas. It utilizes uncertainty theory to model and solve the problem of uncertain links' tolerances, proposing set tolerances to characterize the smallest and largest values between which a group of links may vary while retaining optimality. The study shows that set tolerances are well defined and provides computational formulations within the framework of uncertainty programming to calculate or bound these quantities, proving their superiority over successive reoptimizations.
EXPERT SYSTEMS WITH APPLICATIONS
(2021)
Article
Public, Environmental & Occupational Health
Collins Okoyo, Nelson Onyango, Idah Orowe, Charles Mwandawiro, Graham Medley
Summary: This study conducted a global sensitivity analysis of an STH transmission model in Kenya and found that key parameters such as improved water source and sanitation, rounds of treatment offered, efficacy of the drug used, proportion of the adult population treated, mortality rate of the mature worms, and the strength of the dependence of worm egg production significantly influenced the model outcome. These parameters should be targeted in STH control programs to effectively reach the goal of elimination.
FRONTIERS IN PUBLIC HEALTH
(2022)
Article
Biotechnology & Applied Microbiology
Xinjiao Dong, Jing Qin, Ying Zhang, Xiaohui Chen, Shimei Ge
Summary: Quorum-quenching (QQ) system using bacteria and gamma-caprolactone was effective in mitigating biofouling in a continuous membrane bioreactor (MBR). The system delayed transmembrane pressure increase and reduced soluble microbial products. Microbial community analysis showed that some main genera were not greatly affected by the QQ system.
INTERNATIONAL BIODETERIORATION & BIODEGRADATION
(2022)
Article
Chemistry, Multidisciplinary
Yuqiu Hou, Mei Liu, Xiao Tan, Siyu Hou, Ping Yang
Summary: By using a hybrid carrier composed of MBBR carrier and fluidized bed porous carrier, the treatment efficiency of the reactor can be improved. Optimal removal rates and pollutant concentrations can be achieved by varying the hydraulic retention times and carrier dose ratios.
Article
Engineering, Civil
Zhiqiang Wan
Summary: This paper emphasizes the importance of global sensitivity analysis for stochastic dynamical systems with multiple uncertain parameters and proposes a global sensitivity index suitable for this purpose. The research findings demonstrate that the proposed approach exhibits high efficiency and accuracy.
Article
Chemistry, Multidisciplinary
Jorge E. Jimenez-Hornero, Ines Ma Santos Duenas, Isidoro Garcia-Garcia
Summary: In this study, variance-based global sensitivity analysis was employed to evaluate a first-principles model of the acetification process. The analysis identified key parameters that significantly influenced model outputs, and the model was subsequently simplified and compared to experimental data.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2022)
Article
Environmental Sciences
Bei Wang, Xin Li, Chun-Feng Ma, Gao-Feng Zhu, Wen-Fei Luan, Jun-Tao Zhong, Mei-Bao Tan, Jing Fu
Summary: Integrating the economic values of ecosystem services provided by different land uses into decision analysis is crucial for effective environmental management. This study identified sensitive parameters and quantified potential monetary outcomes to reduce uncertainty in the ecosystem service values. The study also highlighted the negative monetary outcomes of cropland and the higher value of water bodies due to landscape aesthetic, though the uncertainty of landscape aesthetic was high.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Chemical
Jiawei Hou, Shixuan Guo, Nigel Graham, Wenzheng Yu, Kening Sun, Ting Liu
Summary: A novel 2D composite membrane based on r-HGO and MXene materials was developed, demonstrating exceptional performance for water treatment in terms of permeability, pollutant rejection, and physical stability. The optimization of preparation conditions and material proportions can result in high water flux and efficient removal of pollutants.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Retraction
Engineering, Chemical
Chang Liu, Jinghong Liu, Liang Zhu, Shanfu Tang, Huixin Xiong
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Rui Gao, Caihong Liu, Andreia F. Faria, Qiang He, Chun Yang, Jun Ma
Summary: A novel copolymer architecture has been developed to address biofouling concerns in thin-film composite (TFC) membranes by integrating anti-fouling, bactericidal, and fouling-release functions. The multifunctional membrane demonstrates promising anti-adhesive properties, self-cleaning ability, and high flux recovery rate.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Alexander T. Bridge, Noah P. Wamble, Matthew S. Santoso, Joan F. Brennecke, Benny D. Freeman
Summary: This study demonstrates the reproducible preparation of high-flux defect-free asymmetric gas separation membranes using Cyrene(TM) as a majority dope formulation component. By adjusting the volume ratios of Cyrene(TM) and THF, as well as the concentrations of Matrimid(R) and the dry step time, optimal membrane performance is achieved.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Alessandra Imbrogno, Han Ya Lin, Babak Minofar, Andrea Iris Schaefer
Summary: In this study, a composite nanofiber membrane containing cross-linked beta-cyclodextrin-epichlorohydrin was prepared and evaluated for the removal of steroid hormones. The results showed that the membrane had high adsorption capacity and the ability to form a specific inclusion complex interaction with the hormones, indicating its potential application in hormone removal.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Bora Shin, Jaewon Shin, Yanuar Chandra Wirasembada, Ki Young Park, Jinwoo Cho
Summary: This study develops a mathematical model to estimate the initial flux of volatile fatty acids in the direct contact membrane distillation process. It identifies the parameters affecting the flux and their relationship with pH.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Yi-Jui Yeh, Jr Rong Liou, Wei Lin, Kuo-Lun Tung, Wei-Hung Chiang
Summary: This study demonstrates an effective plasma engineering method to create nitrogen-doped graphene quantum dot (NGQD)-inorganic nanocomposites for tunable molecular separation. The composite materials show high separation efficiency and controllable nanopore structures, making them potentially valuable for various applications.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Horacio Lopez-Marques, Kristofer L. Gleason, Manuel Aguilar-Vega, Rita Sulub-Sulub, J. Ehren Eichler, Hyeonji Oh, C. Buddie Mullins, Benny D. Freeman, Manish Kumar
Summary: In this study, water transport properties in Carbon Molecular Sieve (CMS) membranes were investigated. It was found that membranes synthesized at different pyrolysis temperatures exhibited varying water permeabilities. Compared to other polymeric materials, CMS membranes showed high water permeability, indicating potential for dehydration applications.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Dmitry A. Alentiev, Roman Yu. Nikiforov, Marina A. Rudakova, Danil P. Zarezin, Maxim A. Topchiy, Andrey F. Asachenko, Nikolay A. Belov, Maxim Bermeshev
Summary: A series of new norbornene-type monomers containing linear and branched substituents were synthesized, and robust thin membranes were prepared by vinyl-addition polymerization. Gas separation performance for the synthesized polymers was evaluated, and the structure of substituent side chains was found to significantly affect gas permeability and CO2 facilitated transport.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Lei Yan, Qi Zhang, Ze Zhang, Gui-Jie Li, Yi Jin, Xin-Lin Zhang, Yan-Yun Sun
Summary: In this study, a continuous, stable and fast ion transport channel was established through in-situ guided cross-linking of zinc alginate hydrogels on a porous membrane, overcoming the negative pore effect and effectively inhibiting the dendrite growth of zinc anodes and interfacial side reactions.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Yuqing Zhang, Ailing Zhang, Huiyang He, Yuting Fan, Yongjiang Li, Song Wang, Sanxi Li
Summary: The Langmuir-Blodgett self-assembly process is used to create an ordered SPEEK membrane, which enhances the proton conductivity by three times compared to conventional solution casting method.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Hasan Ismaeel, David Gibson, Eleonora Ricci, Maria Grazia De Angelis
Summary: In this study, a machine learning-based group contribution method (ML-GC) was developed to predict pure polymer parameters and successfully applied to predict gas solubility and gas solubility isotherms in glassy polymeric membranes. The model showed satisfactory performance on a small dataset, but has the potential to provide more accurate predictions for a wider range of polymers as more data becomes available.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Yi Ji, Yu Sun, Huilin Li, Qiang Fu, Yan Zhang
Summary: Previous studies have shown that vibration- or rotation-based techniques can effectively mitigate fouling during membrane filtration. However, it is difficult to incorporate these techniques with spiral wound modules (SWMs) widely used in water and wastewater treatment. This study developed a prototype membrane system to accommodate angular vibrations with a modified SWM, and experimental results showed that applying angular vibrations can effectively control algal fouling in an SWM with lower energy consumption compared to traditional methods.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Lakshmeesha Upadhayaya, Abaynesh Yihdego Gebreyohannes, Muhammad Wakil Shahzad, Usman T. Syed, Sandra L. Aristizabal, Radoslaw Gorecki, Suzana P. Nunes
Summary: Increasing temperatures worldwide pose a significant health risk, exacerbated by high humidity. Conventional air conditioners contribute heavily to carbon dioxide emissions, with dehumidification being a major factor. Membrane-based dehumidification system offers energy efficiency and non-toxic water vapor removal. This study demonstrates a membrane dehumidification system with polymeric hollow fibers coated with a green polyphenol coating, showing remarkable water vapor transport rate and selectivity. Long-term testing reveals minimal decline in vapor transport and a 4-5 times higher coefficient of performance (COP) compared to conventional dehumidifiers, making it a highly competitive, energy-saving device with reduced emissions and a smaller footprint.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Zhengzhong Zhou, Xue Zhu, Yi Yuan, Shaoqiang Wang, Xiaoshan Meng, Taoli Huhe, Qian Wang
Summary: In this study, lignin, a biomass material, was chemically modified and utilized in the interfacial polymerization process to improve the performance of nanofiltration membranes. The modified membranes showed enhanced hydrophilicity and anti-fouling properties, and the optimization of membrane pore size increased permeability. The study also demonstrated the potential application of the membranes in biogas slurry valorization.
JOURNAL OF MEMBRANE SCIENCE
(2024)