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Impact of modified electrodes on boosting power density of microbial fuel cell for effective domestic wastewater treatment:A case study of Tehran

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燃料化学学报 2017年第7期45卷 871-879页

作者： Fatemeh Nourbakhsh Mohammad Pazouki mohsen mohsennia Department of Chemistry University of Kashan Department of Energy Institute of Materials and Energy (MERC) Nanoscience and Nanotechnology Institution University of Kashan

Utilizing microbial fuel cells( MFCs) is a promising technology for energy-efficient domestic wastewater treatment,but it still faces practical barriers such as low power generation. In this study,the LaMnO_3 perovskite-type oxide nanoparticles and nickel oxide/carbon nanotube/polyaniline( NCP) nanocomposite( the cathode and anode catalysts,respectively) have been prepared and used to enhance power density of MFC. The prepared La-based perovskite oxide catalysts were characterized by X-ray diffraction( XRD) and scanning electron microscopies( SEM). The electrocatalytic properties of the prepared catalysts were investigated through cyclic voltammetry( CV) and electrochemical impedance spectroscopy( EIS) and Tafel plot at ambient temperature. Results show the exchange current densities of LaMnO_3/carbon cloth cathode and NCP nanocomposite/carbon cloth anode were 1.68 and 7 times more compared to carbon cloth cathode,respectively. In comparison to the bare carbon cloth anode,the MFC with the modified electrodes shows 11 times more enhancement in power density output which according to electrochemical results,it can be due to the enhancement of the electron transfer capability. These cathodic and anodic catalysts were examined in batch and semicontinuous modes to provide conditions close to industrial conditions. This study suggests that utilizing these low cost catalysts has promising potential for wastewater treatment in MFC with high power generation and good COD removal efficiency.

关键词： carbon nanotube nickle oxide La-based perovskite oxide semi-continuous mode

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Improved double-gate armchair silicene nanoribbon field-effect-transistor at large transport bandgap

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Chinese Physics B 2016年第1期25卷 809-816页

作者： mohsen Mahmoudi Zahra Ahangari Morteza Fathipour Department of Electrical and Computer Engineering University of Tehran Young Researchers and Elite Club Yadegar-e-Imam Khomeini (RAH) Shahre-Rey Branch Islamic Azad University

The electrical characteristics of a double-gate armchair silicene nanoribbon field-effect-transistor （DG ASiNR FET） are thoroughly investigated by using a ballistic quantum transport model based on non-equilibrium Green＇s function （NEGF） approach self-consistently coupled with a three-dimensional （3D） Poisson equation. We evaluate the influence of variation in uniaxial tensile strain, ribbon temperature and oxide thickness on the on-off current ratio, subthreshold swing, transconductance and the delay time of a 12-nm-length ultranarrow ASiNR FET. A novel two-parameter strain mag- nitude and temperature-dependent model is presented for designing an optimized device possessing balanced amelioration of all the electrical parameters. We demonstrate that employing HfO2 as the gate insulator can be a favorable choice and simultaneous use of it with proper combination of temperature and strain magnitude can achieve better device performance. Furthermore, a general model power （GMP） is derived which explicitly provides the electron effective mass as a function of the bandgap of a hydrogen passivated ASiNR under strain.

关键词： silicene double-gate field-effect-transistor non-equilibrium Green's function tight binding

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A new solution to estimate the time delay on the topographic site using time domain 3D boundary element method

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Earthquake Engineering and Engineering Vibration 2020年第3期19卷 611-623页

作者： Reza Tarinejad mohsen Isari Abdollah Sohrabi-Bidar Faculty of Civil Engineering University of TabrizTabrizIran School of Geology College of ScienceUniversity of TehranTehranIran

This study focuses on investigating spatial variation of ground motion that has great influence on the dynamic behavior of the large structures located on the surface *** of the most effective parameters on the spatial variation of ground motion is the difference between the arrival time of seismic waves in different points located on the *** this research,a three-dimensional model of the Pacoima Dam site is *** time domain 3 D boundary element method is used to apply non-uniform excitation at the dam *** model is subjected to vertically propagating incident SH and P *** time delay can be characterized by calculating the value of the time delay for which the cross-correlation between two records is ***,to obtain the time delay in a topographic site,a function considering effective parameters such as the height from the canyon base,wave velocity and predominant frequency,is ***,a code was developed for generating the spatially variation of seismic ground *** results show that the proposed functions have an acceptable accuracy in estimating the time delay to generate non-uniform ground motion.

关键词： delay boundary element

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On the Complexity of Finding Tensor Ranks

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Communications on Applied Mathematics and Computation 2021年第2期3卷 281-289页

作者： mohsen Aliabadi Shmuel Friedland Department of Mathematics Iowa State University411 Morrill RoadAmesIA 50011-2104USA Department of Mathematics Statistics and Computer ScienceUniversity of Illinois at ChicagoChicagoIL 60607-7045USA

The purpose of this note is to give a linear algebra algorithm to find out if a rank of a given tensor over a field F is at most k over the algebraic closure of F,where K is a given positive *** estimate the arithmeti... 详细信息

关键词： Gauss elimination Homogeneous polynomial NP-hardness Symmetric tensor Tensor rank

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Liquid ordering induced heterogeneities in homogeneous nucleation during solidification of pure metals

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Journal of Materials Science & Technology 2022年第11期106卷 77-89页

作者： Avik Mahata Tanmoy Mukhopadhyay mohsen Asle Zaeem School of Engineering Brown UniversityProvidenceRI02912USA Department of Engineering Science University of OxfordOxfordOX13PJUK Department of Aerospace Engineering Indian Institute of Technology KanpurKanpurIndia Department of Mechanical Engineering Colorado School of MinesCO80401USA

Homogeneous crystal nucleation is prone to formation of defects and often experiences heterogeneities,the inferences of which are crucial in processing crystalline materials and controlling their physical properties. It has been debated in literature whether the associated heterogeneities are an integral part of the homogenous nucleation. In this study by integrating a probabilistic approach with large-scale molecular dynamics simulations based on the most advanced high-temperature interatomic potentials, we attempt to address the ambiguity over the sources and mechanisms of heterogeneities in homogenous nucleation during solidification of pure melts. Different classes of structured metals are investigated for this purpose,including face-centered cubic aluminum, body-centered cubic iron, and hexagonal close-packed magnesium. The results reveal, regardless of the element type or the solidified crystal structure, that the densification process of liquid metals is accompanied by short-range orderings of atoms prior to the formation of crystals, controlling the heterogeneities during homogenous nucleation.

关键词： Homogeneous nucleation Heterogeneity Solidification Metals Molecular dynamics simulation Probability density

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Direct method for a Cauchy problem with application to a Tokamak

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Theoretical & Applied Mechanics Letters 2019年第4期9卷 254-259,I0004页

作者： mohsen Tadi Mechanical Engineering Department Univerisity of Colorado Denver

This note is concerned with a new direct(non-iterative)method for the solution of an elliptic inverse *** method is based on the application of the Green's second identity which leads to a moment problem for the unknown boundary *** regularization is used to obtain a stable and close approximation of the missing boundary condition without any need for *** examples are used to study the applicability of the method with the presence of noise.

关键词： Cauchy problem Moment problem Non-iterative Tokamak

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Variation of XCO_(2) anomaly patterns in the Middle East from OCO-2 satellite data

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International Journal of Digital Earth 2022年第1期15卷 1219-1235页

作者： Foroogh Golkar Seyed mohsen Mousavi Department of Water Engineering&Oceanic and Atmospheric Research Centre College of AgricultureShiraz UniversityShirazIran Department of Environmental Planning and Design Shahid Beheshti UniversityTehranIran

The anthropogenic CO_(2) emission is contributed to the rapid increase in CO_(2) *** the current study the anthropogenic CO_(2) emission in the Middle East(ME)is investigated using 6 years columnaveraged CO_(2) dry air mole fraction(XCO_(2))observation from Orbiting Carbon Observatory-2(OCO-2)*** this way,the XCO_(2) anomaly(DXCO_(2))as the detrended and deseasonalized term of OCO-2XCO_(2) product,was computed and compared to provide the direct spacebased anthropogenic CO_(2) emission *** a result,the high positive and negative DXCO_(2) values have corresponded to the major sources such as oil and gas industries,and growing seasons over ME,***,the Open-source Data Inventory for Anthropogenic CO_(2)(ODIAC)emission and the gross primary productivity(GPP)were utilized in exploring the DXCO_(2) relation with human and natural driving *** results showed the capability of DXCO_(2) maps in detecting CO_(2) emission fluctuations in defined periods were detectible in daily to annual *** simplicity and accuracy of the method in detecting the man-made and natural driving factors including the main industrial areas,megacities,or local changes due to COVID-19 pandemic or geopolitical situations as well as the vegetation absorption and biomass burning is the key point that provides the environmental managers and policymakers with valuable and accessible information to control and ultimately reduce the CO_(2) emission over critical regions.

关键词： Greenhouse gas remote sensing CO_(2)emission ODIAC GPP

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Classification of Special Anosov Endomorphisms of Nil-manifolds

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Acta Mathematica Sinica,English Series 2019年第12期35卷 1871-1890页

作者： Seyed mohsen MOOSAVI Khosro TAJBAKHSH Department of Mathematics Faculty of Mathematical Sciences Tarbiat Modares University

In this paper we give a classification of special endomorphisms of nil-manifolds:Let f:N/Γ→N/Γbe a covering map of a nil-manifold and denote by A:N/Γ→N/Γthe nil-endomorphism which is homotopic to *** f is a spec... 详细信息

关键词： Hyperbolicity Anosov endomorphisms special Anosov endomorphisms TA maps nilmanifolds

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Electrocatalytic oxidation of thiosulfate at 2,7-bis(ferrocenylethyl)-fluoren-9-one-modified carbon paste electrode(2,7-BFEFMCPE):Application to the catalytic determination of thiosulfate in real sample

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Chinese Chemical Letters 2010年第12期21卷 1462-1466页

作者： jahan Bakhsh Raoof Reza Ojani Hassan Karimi-Maleh Electroanalytical Chemistry Research Laboratory Department of Analytical ChemistryFaculty of ChemistryUniversity of MazandaranBabolsarIran

Electrocatalytic oxidation of thiosulfate at the 2,7-BFEFMCPE occurs at a potential about 460 mV less positive than that unmodified carbon paste *** diffusion coefficient（=5.6×10^-5）cm^2 s^-1）,the kinetic parameters such as electron transfer coefficient,（=0.5） and kh（=1.21×10^-3 cm s^-1） of thiosulfate oxidation at the surface of,2,7-BFEFMCPE were *** electrocatalytic oxidation peak current of thiosulfate showed two linear dynamic ranges（0.0006-0.009 mmol/L and 0.009- 0.900 mmol/L） and a detection limit of 0.00015 mmol/*** method was also examined as a new electrochemical sensor for the determination of thiosulfate in real sample.

关键词： 2,7-Bis(ferrocenylethyl)-fluoren-9-one Thiosulfate Electrocatalysis Cyclic voltammetry Differential pulse voltammetry

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High-throughput phenotyping identifies plant growth differences under well-watered and drought treatments

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Journal of Integrative Agriculture 2020年第10期19卷 2429-2438页

作者： Seth TOLLEY Yang YANG mohsen MOHAMMADI Department of Agronomy Purdue UniversityWest LafayetteIN 47907United States College of Agricuture Department of AgronomyPurdue UniversityWest LafayetteIN 47907United States

The ability to screen larger populations with fewer replicates and non-destructive measurements is one advantage of high-throughput phenotyping(HTP)over traditinal phenotyping *** this study,two wheat accessions were grown in a controlled-environment with a moderate drought imposed from stem elongation to ***-green-blue(RGB)imaging was performed on 17 of the 22 d following the start of drought *** measurements from all plants were performed at the conclusion of the *** effect of line was signifcant for shoot dry matter,spike dry matter,root dry matter,and tller number,while the water treatment was significant on shoot dry matter and root dry *** temporal,non-destructive nature of HTP allowed the drought treatment to be significantly differentiated from the well-watered treatment after 6 d in a line from Argentina and 9 d in a line from *** difference of 3 d indicated an increased degree of drought tolerance in the line from ***,HTP from the final day of imaging accurately predicted reference plant height(r=1),shoot dry matter(r=0.95)and tller number(r=0.91).This experiment ilustrates the potential of HTP and its use in modeling plant growth and development.

关键词： high-throughput phenotyping drought controlled-environment wheat

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