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Highly efficient vanadium redox flow batteries enabled by a trilayer polybenzimidazole membrane assembly

CARBON ENERGY 2024年第7期6卷 191-204页

作者： Bui, Trung Tuyen Shin, Mingyu rahimi, mohammad Bentien, Anders Kwon, Yongchai Henkensmeier, Dirk Korea Inst Sci & Technol KIST Hydrogen Fuel Cell Res Ctr Seoul South Korea Univ Sci & Technol KIST Sch Div Energy & Environm Technol Seoul South Korea Korea Univ Grad Sch Energy & Environm Seoul South Korea Korea Inst Sci & Technol KIST Hydrogen Fuel Cell Res Ctr Seoul 02792 South Korea Seoul Natl Univ Sci & Technol Dept Chem & Biomol Engn Seoul South Korea Seoul Natl Univ Sci & Technol Dept Chem & Biomol Engn 232 Gongneung ro Seoul 01811 South Korea Aarhus Univ Dept Biol & Chem Engn Aarhus Denmark

A novel polybenzimidazole (PBI)-based trilayer membrane assembly is developed for application in vanadium redox flow battery (VRFB). The membrane comprises a 1 mu m thin cross-linked poly[2,2'-(p-oxydiphenylene)-5,5'-bibenzimidazole] (OPBI) sandwiched between two 20 mu m thick porous OPBI membranes (p-OPBI) without further lamination steps. The trilayer membrane demonstrates exceptional properties, such as high conductivity and low area-specific resistance (ASR) of 51 mS cm(-1) and 81 m Omega cm(2), respectively. Contact with vanadium electrolyte increases the ASR of trilayer membrane only to 158 m Omega cm(2), while that of Nafion is 193 m Omega cm(2). VO2+ permeability is 2.73 x 10(-9) cm(2) min(-1), about 150 times lower than that of Nafion NR212. In addition, the membrane has high mechanical strength and high chemical stability against VO2+. In VRFB, the combination of low resistance and low vanadium permeability results in excellent performance, revealing high Coulombic efficiency (>99%), high energy efficiency (EE; 90.8% at current density of 80 mA cm(-2)), and long-term durability. The EE is one of the best reported to date.

关键词： polybenzimidazole porous membrane proton conductivity trilayer VRFBs PROTON-EXCHANGE MEMBRANES CONDUCTIVITY PERFORMANCE DEGRADATION STABILITY MECHANISM SOLVENT STORAGE ENERGY

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Prevalence of malaria infection in Sarbaz,Sistan and Bluchistan province

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Asian Pacific Journal of Tropical Biomedicine 2011年第6期1卷 491-492页

作者： Youssefi mohammad Reza rahimi mohammad Taghi Department of Parasitology Islamic Azad University

Objective:To survey malaria prevalence in Sarbaz from April 2009 to October ***: Epidemiological data of 1 464 confirmed malarial patients were analyzed according to demographic status,sex,age,nationality,isolated species and residence ***:The majority of patients were male 930(64.8%) but 514(35.2%) were female.82.5%of patients were Iranian,14%Pakistani immigrants,and 3.5%Afghan *** collected showed that 90% of isolated species were Plasmodium vivax,7.8%Plasmodium falciparum,and 2.2%Plasmodium malariae and mixed ***:Therefore,it is crystal clear that refugees should be prohibited by government and controlled by experts in health centers in order to campaign effectively with this life threating disease.

关键词： Malaria Prevalence Sarbaz Plasmodium vivax Plasmodium falciparum

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The research and development on the antioxidants in prevention of diabetic complications

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Asian Pacific Journal of Tropical Medicine 2016年第9期9卷 801-808页

作者： mohammad rahimi-Madiseh Afsaneh Malekpour-Tehrani Mahmoud Bahmani Mahmud Rafieian-kopaei Medical Plants Research Center Shahrekord University of Medical Sciences Department of Social Medicine Shahrekord University of Medical Sciences Faculty of Medicine and Clinical Microbiology Research Center

Diabetes mellitus can damage the eyes,kidneys,nerves and *** and macrovascular disorders are the leading causes of morbidity and mortality in diabetic *** can increase the indicators of lipid peroxidation and oxidative stress in which free radicals have the main role in the pathogenesis of these ***,antioxidants which combat oxidative stress should be able to prevent and repair free radicals induced *** free radicals contribute to kidney damage,atherosclerosis,diabetes,heart disease,nephrotoxicity and hepatotoxicity; however,clinical trials do not uniquely confirm a substantial impact on diabetic *** seems that antioxidants in vegetables,fruits and grains help preventing diabetes complications; however,there is little evidence that taking single antioxidants such as vitamin E or vitamin C protect these *** findings about combination antioxidants are also complicated and not entirely *** this review paper we tried to present the role of oxidative stress on microvascular complications of type2 diabetes *** objective of this paper is to review the new findings about the role of various antioxidants on prevention and treatment of diabetes mellitus as well as its complications including retinopathy,nephropathy and neuropathy.

关键词： Diabetic Nephropathy Natural antioxidants Diabetes complications Nephropathy Neuropathy Retinopathy

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Transient thermal behavior of radial fins of rectangular,triangular and hyperbolic profiles with temperature-dependent properties using DTM-FDM

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Journal of Central South University 2017年第3期24卷 675-682页

作者： Sobhan Mosayebidorcheh mohammad rahimi-Gorji D.D Ganji Taha Moayebidorcheh O Pourmehran M.Biglarian Young Researchers and Elite Club Najafabad BranchIslamic Azad UniversityNajafabadIran Young Researchers and Elite Club Gorgan BranchIslamic Azad UniversityGorganIran Mechanical Engineering Department Babol University of TechnologyBabolMazandaranIran Department of Mechanical Engineering Sharif University of TechnologyTehranIran

This work focuses on transient thermal behavior of radial fins of rectangular,triangular and hyperbolic profiles with temperature-dependent properties.A hybrid numerical algorithm which combines differential transformation(DTM) and finite difference(FDM) methods is utilized to theoretically study the present *** and FDM are applied to the time and space domains of the problem,*** accuracy of this method solution is checked against the numerical ***,the effects of some applicable parameters were studied *** a broad range of governing parameters are investigated,the results could be useful in a number of industrial and engineering applications.

关键词： transient thermal behavior radial fin thermal conductivity temperature-dependent property hybrid differential transformation-finite difference (DTM-FDM)

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A case of misdiagnose of malaria infection

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Asian Pacific Journal of Tropical Biomedicine 2013年第9期3卷 748-750页

作者： Mahdavi Seif Ali Raeesi Ahmad Faraji Leyla Youssefi mohammad Reza rahimi mohammad Taghi Department of Paramedics Mazandaran University of Medical Sciences Malaria Control Organization of Ministry of Health Department of Parasitology Islamic Azad UniversityBabol Branch Young Researchers club Islamic Azad UniversityBabol Branch

A case of malaria infection in a 42-year-old woman in rural area of Mahmodabad,Mazandaran Province,North Iran was reported and discussed *** was complaining about recurrent fevers,sweating,headache and myalgia in *** her first admission to hospital due lo misdiagnose she did not receive proper treatment and the patient suffered from clinical manifestations *** in the second admission to another hospital,after a precise examination on her thick and thin blood smear the agent of disease was recognized appropriately as Plasmodium vivax and treated accordingly.

关键词： Malaria Plasmodium vivax Infection Tropical disease Iran

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Sensing the heavy water concentration in an H_(2)O-D_(2)O mixture by solid-solid phononic crystals

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Chinese Physics B 2024年第4期33卷 493-498页

作者： mohammadreza rahimi Ali Bahrami Optoelectronic and Nanophotonics Research Laboratory(ONRL) Faculty of Electrical EngineeringSahand University of TechnologyTabrizIran

A new method based on phononic crystals is presented to detect the concentration of heavy water(D_(2)O)in an H_(2)O-D_(2)O *** have been obtained and analyzed in the concentration range of 0%-10%and 90%-100%D_(2)O.A proposed structure of tungsten scatterers in an aluminum host is *** order to detect the target material,a cavity region is considered as a sound wave resonator in which the target material with different concentrations of D_(2)O is *** changing the concentration of D_(2)O in the H_(2)O-D_(2)O mixture,the resonance frequency undergoes a frequency *** 1%change in D_(2)O concentration in the H_(2)O-D_(2)O mixture causes a frequency change of about 120 *** finite element method is used as the numerical method to calculate and analyze the natural frequencies and transmission spectra of the proposed *** performance evaluation index shows a high Q factor up to 1475758 and a high sensitivity up to 13075,which are acceptable values for sensing *** other figures of merit related to the detection performance also indicate high-quality performance of the designed sensor.

关键词： phononic crystals sensor H_(2)O-D_(2)O mixture cavity

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Experimental and Finite Element Analysis of Corroded High-Pressure Pipeline Repaired by Laminated Composite

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Computer Modeling in Engineering & Sciences 2024年第8期140卷 1783-1806页

作者： Seyed mohammad Reza Abtahi Saeid Ansari Sadrabadi Gholam Hosein rahimi Gaurav Singh Hamid Abyar Daniele Amato Luigi Federico Faculty of Mechanical Engineering Tarbiat Modares UniversityTehran***Iran A.Leon Linton Department of Mechanical Robotics and Industrial EngineeringLawrence Technological UniversitySouthfieldMI48075USA Department of Mechanical Engineering Faculty of EngineeringMeybod UniversityYazd***Iran Department of Industrial Engineering University of SalernoVia Giovanni PaoloⅡFiscianoItaly Italian Aerospace Research Center(C.I.R.A.) Via MaioriseCapuaCE81043Italy

Repairs of corroded high-pressure pipelines are essential for fluids transportation under high *** of the methods used in their repairs is the use of layered *** composite used must have the necessary ***,the experiments and analytical solutions presented in this paper are performed according to the relevant standards and codes,including ASME PCC-2,ASME B31.8S,ASME B31.4,ISO 24817 and ASME *** addition,the experimental tests are replicated numerically using the finite element *** the strain gauges at different distances from the defect location,can reduce the nonlinear effects,deformation,and fluctuations due to the high *** direct relationship between the depth of an axial defect and the stress concentration is observed at the inner side edges of the *** reparation reduces the non-linearities related to the sharp variation of the geometry and a more reliable numerical simulation could be performed.

关键词： High-pressure pipeline composite repair ASME PCC-2 ISO 24817

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Trends in Indices of Extreme Temperature and Precipitation in Iran over the Period 1960-2014

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Open Journal of Ecology 2018年第7期8卷 396-415页

作者： mohammad rahimi Nooshin mohammadian Ameneh Rezei Vanashi Kirien Whan Department of Combat Desertification Faculty of Desert Studies Semnan University Semnan Iran I.R. of Iran Meteorological Organization Tehran Iran Royal Netherlands Meteorological Institute De Bilt The Netherlands

Climate extremes can have many negative effects on different sectors. Globally, observations show significant changes in the characteristics of extreme events. We examined trends in extreme temperature and precipitation indices in Iran during the period 1960-2014. We present results from 33 quality controlled and homogenous synoptic stations (excluding stations with excessive missing data). For each station, we calculate 27 indices characterizing extreme temperature and precipitation. For all indices (including Rx5DAY, CWD, R95p, R99p, GSL and TXn) positive, negative, and insignificant trends were obtained. Generally, there were negative trends in R10mm, R20mm, R25mm, CDD, PRCPTOT, FD, TN10p, TX10p, CSDI and positive trends in Rx1DAY, SDII, SU25, TR20, TXx, TNn, TNx, TN90p, TX90p and WSDI at most stations. There is a decreasing trend in the magnitude and frequency of cold extremes and an increasing trend in magnitude and frequency of warm extremes over the observational record, which is consistent with previous research reporting the warming trends of the climate.

关键词： Climate Change Extreme Temperature Extreme Precipitation Iran RClimdex

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Auto-tuning PVT data using multi-objective optimization: Application of NSGA-Ⅱ algorithm

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Petroleum 2024年第1期10卷 135-149页

作者： Abdolhadi Zarifi mohammad Madani mohammad Jafarzadegan Reservoir Engineering Systems Petroleum Engineering Department Main Office Building of National Iranian South Oil Company (NISOC) Combined Planning Management National Iranian Oil Company (NIOC) Reservoir Engineering Division Petroleum Engineering Department Petroleum Engineering and Development Company (PEDEC)

Reservoir simulation is known as perhaps the most widely used, accurate, and reliable method for field development in the petroleum industry. An integral part of a reliable reservoir simulation process is to consider robust and rigorous tuned EOS models. Traditionally, EOS models are tuned iteratively through arduous workflows against experimental PVT data. However, this comes with a number of drawbacks such as forcingly using weight factors, which upon alteration adversely affects the optimization *** objective of the current work is thus to introduce an auto-tune PVT matching tool using NSGA-II multi-objective optimization. In order to illustrate the robustness of the presented technique, three different PVT samples are used, including two black-oil and one gas condensate sample. We utilize PengRobinson EOS during all the manual and auto-tuning processes. Comparison of auto-tuned EOS-generated results with those of experimental and computed statistical error values for these samples clearly show that the proposed method is robust. In addition, the proposed method, contrary to the manual matching process, provides the engineer with several matched solutions, which allows them to select a match based on the engineering background to be best amenable to the problem at hand. In addition, the proposed technique is fast, and can output several solutions within less time compared to the traditional manual matching method.

关键词： Auto-tuning PVT Equation of state NSGA-II Multi-objective optimization

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Investigation of material composition,design,and performance of open-graded asphalt mixtures for semi-flexible pavement:A comprehensive experimental study

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Journal of Traffic and Transportation Engineering(English Edition) 2024年第1期11卷 92-116页

作者： mohammad Taghipoor Abolfazl Hassani mohammad M.Karimi Department of Civil and Environmental Engineering Tarbiat Modares UniversityTehranIran

The primary goal of this study is the design and construction of semi-flexible pavement(SFP)mixture in accordance with the engineering and mechanical *** study involves the use of a range of gradation curves,air void contents,cellulose and synthesized fibers,and neat and modified asphalt binders to prepare the open-graded asphalt(OGA)*** analyze the characteristics of these mixtures,a variety of test,namely binder drainage,semi-circular bending(SCB),Cantabro,wheel tracking,indirect tensile strength(ITS),and permeability tests were ***,to analyze the prepared grouting material,flexural strength,compressive strength,and fluidity tests were *** the final stage,SFP was compared to HMA in terms of engineering characteristics and *** to the results,SFP was more resistant to skid,rutting,fire,and moisture damage,while HMA had a better performance in fracture tests,including SCB *** to the results of the mechanical performance tests conducted on OGA mixtures,the highest and lowest values for air void content to achieve the highest mechanical performance level were 30%-35%and 25%,***,based on the laboratory results,it was determined that the required void ratio for constructing OGA mixtures was 24%-26%based on the bitumen type and fibers amount in the ***,SFP mixture can be regarded as a viable alternative to common pavements thanks to its high resistance to rutting and moisture damage,long freezing-thawing fatigue life,and adequate fire and skid resistance.

关键词： Semi-flexible pavement mixture Open-graded asphalt mixture Engineering properties Cantabro test Hot mix asphalt

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