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Underground storage tank blowout analysis:Stability prediction using an artificial neural network

Journal of Safety Science and Resilience 2023年第4期4卷 366-379页

作者： nhat tan duong Van Qui Lai Jim Shiau Rungkhun Banyong Suraparb Keawsawasvong Faculty of Civil Engineering Ho Chi Minh City University of Technology(HCMUT)VNU-HCMHo Chi Minh CityVietnam School of Engineering University of Southern QueenslandToowoomba 4350QLDAustralia Research Unit in Sciences and Innovative Technologies for Civil Engineering Infrastructures Department of Civil EngineeringThammasat School of EngineeringThammasat UniversityPathumthani 12120Thailand

Most geotechnical stability research is linked to“active”failures,in which soil instability occurs due to soil self-weight and external surcharge *** contrast,research on passive failure is not common,as it is predominately caused by external loads that act against the soil *** earlier active trapdoor stability investigation using the Terzaghi’s three stability factor approach was shown to be a feasible method for evaluating cohesive-frictional soil ***,this technical note aims to expand“active”trapdoor research to assess drained circular trapdoor passive stability(blowout condition)in cohesive-frictional soil under axisymmetric *** numerical finite element limit analysis(FELA)simulations,soil cohesion,surcharge,and soil unit weight effects are considered using three stability factors(Fc,Fs,and Fγ),which are all associated with the cover-depth ratio and soil internal friction *** upper-bound(UB)and lower-bound(LB)results are presented in design charts and tables,and the large dataset is further studied using an artificial neural network(ANN)as a predictive model to produce accurate design *** proposed passive trapdoor problem under axisymmetric conditions is significant when considering soil blowout stability owing to faulty underground storage tanks or pipelines with high internal pressures.

关键词： Blowout Passive stability Trapdoor Stability factors Limit analysis

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Applying an Ordinal Priority Approach Based Neutrosophic Fuzzy Axiomatic Design Approach to Develop Sustainable Geothermal Energy Source

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Energy Engineering 2024年第8期121卷 2039-2064页

作者： Chia-Nan Wang Thuy-duong Thi Pham nhat-Luong Nhieu Department of Industrial Engineering and Management National Kaohsiung University of Science and TechnologyKaohsiung807618Taiwan

Geothermal energy is considered a renewable,environmentally friendly,especially carbon-free,sustainable energy source that can solve the problem of climate *** general,countries with geothermal energy resources are the ones going through the ring of ***,not every country is lucky enough to own this *** a country with 117 active volcanoes and within the world’s ring of fire,it is a country whose geothermal resources are estimated to be about 40%of the world’s geothermal energy ***,the percentage used compared to the geothermal potential is too ***,this is the main energy source that Indonesia is aiming to exploit and ***,the deployment and development of this energy source are still facing many obstacles due to many aspects from budget sources due to high capital costs,factory construction location,quality of resources,and conflicts of the local *** this context,determining the optimal locations for geothermal energy sites(GES)is one of the most important and necessary *** strengthen the selection methods,this study applies a two-layer fuzzy multi-criteria decision-making *** the layers,the Ordinal Priority Approach(OPA)is proposed to weight the sub-criteria,the main criterion,and the sustainability *** layer 2,the Neutrosophic Fuzzy Axiomatic Design(NFAD)is applied to rank and evaluate potential locations for geothermal plant *** the right geothermal energy site can bring low-cost efficiency,no greenhouse gas emissions,and quickly become the main energy source providing electricity for *** final ranking shows Papua,Kawah Cibuni,and Moluccas as the three most suitable cities to build geothermal energy *** Cibuni was identified as the most potential GES in Indonesia,with a score of *** is the second most promising GES with a score of *** is the Moluccas,with a score of ***,the three least potential sites among the 15 s

关键词： Ordinal priority approach neutrosophic fuzzy axiomatic design renewable energy multiple criteria decision making geothermal energy

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High-dose methylprednisolone pulse therapy for the treatment of patients with severe COVID-19: Results from a prospective observational study

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Journal of Intensive Medicine 2022年第3期2卷 197-198页

作者： Thinh N.Bui Hoang-Anh Ngo nhat M.Huynh Nguyen-Huy Do-Tran Lac Duy Le Thu-Anh Nguyen COVID-19 Intensive Care Unit 2 Thu Duc City HospitalThu Duc CityHo Chi Minh CityTam Phu 721400Vietnam Woolcock Institute of Medical Research 298 Kim MaBa DinhHanoi 118000Vietnam Usher Institute Old Medical SchoolUniversity of EdinburghEdinburgh EH89AGUnited Kingdom School of Medicine Vietnam National UniversityDong HoaHo Chi Minh CityDi AnBinh Duong 590000Vietnam Sydney School of Medicine The Faculty of Medicine and HealthThe University of SydneyCamperdownNSW 2050Australia

To the Editor:Recent randomized controlled trials,as well as high-quality systematic reviews and meta-analyses,strongly support the use of corticosteroids in patients with coronavirus disease 2019(COVID-19)who require oxygen support.[1]The use of pulse cor-ticosteroid therapy has been reported in case series and studies,showing significant improvement in patients and a reduction in mortality rate.[2]In this letter,we report the mortality rate among patients with severe COVID-19 receiving pulse corticos-teroids with methylprednisolone(500 mg/day)for≥3 days and≥24 h before intubation(median duration of therapy:3 days)compared with standard of care.

关键词： patients mortality therapy

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