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Er_(2)TiO_(5)@Ag nanocomposites:Enhanced photocatalysis and bacteria inactivation,and cytotoxicity

Journal of Rare Earths 2024年第5期42卷 851-858,I0002页

作者： Mehdi Nazeri Hossein Sedaghat Reza Rafiei Mohammad Amin Farzin seyed mostafa hosseinpour mashkani Department of Parasitology and Mycology Kashan University of Medical SciencesKashanIran Department of Microbiology Kashan University of Medical SciencesKashanIran General Medicine Student School of MedicineKashan University of Medical SciencesKashanIran Student Research Committee Kashan University of Medical SciencesKashanIran Institute for Biomedical Materials and Devices School of Mathematical and Physical SciencesFaculty of ScienceUniversity of Technology SydneyNSW2007Australia

In this study,we successfully synthesized Er_(2)TiO_(5)@Ag nanocomposites(NCPs) using the ultrasonicmediated sol-gel technique to create a multifunctional material with enhanced photocatalytic and antibacterial *** visible light photocatalytic activities of Er_(2)TiO_(5) nanoparticles(NPs) and Er_(2)TiO_(5)@Ag NCPs were systematically evaluated under various conditions,including different concentrations of Basic Blue 41(BB 41) dye and *** results reveal a remarkable improvement in the photocatalytic degradation efficiency of Er_(2)TiO_(5)@Ag NCPs(95%) compared to Er_(2)TiO_(5) NPs(80%).Furthermore,the antibacterial efficacy of Er_(2)TiO_(5) NPs and Er2TiO_5@Ag NCPs were extensively examined against Gram-positive and Gram-negative ***,Er_(2)TiO_(5)@Ag NCPs exhibit significantly higher minimum bactericidal concentration(MBC) values compared to Er_(2)TiO_(5) *** antibacterial effect of Er_(2)TiO_(5)@Ag NCPs is particularly pronounced against *** and Pseudomonas aeruginosa,while demonstrating moderate effects on Escherichia coli and Enterococcus *** assess the biocompatibility of the synthesized materials,we investigated their internalization by MCF-7 ***,both Er_(2)TiO_(5) NPs and Er_(2)TiO_(5)@Ag NCPs are found to be effectively internalized by the cells,suggesting their potential application in biomedical ***,our study unveils the exceptional potential of Er_(2)TiO_(5)@Ag NCPs as a dual-action solution,simultaneously possessing enhanced photocatalytic efficiency and potent antibacterial *** multifunctional nanocomposite not only outperforms Er_(2)TiO_(5) and Ag but also paves the way for innovative applications in sustainable environmental remediation and advanced biomedical technologies,promising a brighter and cleaner future.

关键词： Rare earth catalysis Nanocomposite Er_(2)TiO_(5)@Ag Antibacterial activity Photocatalysis Cytotoxicity

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3D打印和电沉积多层超轻夹层板的力学性能和能量吸收性能

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Transactions of Nonferrous Metals Society of China 2024年第1期34卷 255-264页

作者： Mehrnoosh hosseinpour Salar ROHANI NEJAD seyed Mohammad Hossein MIRBAGHERI Department of Materials and Metallurgical Engineering Amirkabir University of TechnologyHafez St.Tehran15875-4413Iran

研究由开孔聚合物和金属/聚合物泡沫芯制成的轻质夹层板的力学性能和能量吸收性能。通过结合聚合物树脂的增材制造和三层金属(Ni/Ni-Cu/Ni)的电沉积制备多层夹层板,每英寸孔数(PPI)为4、5和6。测试样品在单轴压缩变形过程中的屈服强度,... 详细信息

研究由开孔聚合物和金属/聚合物泡沫芯制成的轻质夹层板的力学性能和能量吸收性能。通过结合聚合物树脂的增材制造和三层金属(Ni/Ni-Cu/Ni)的电沉积制备多层夹层板,每英寸孔数(PPI)为4、5和6。测试样品在单轴压缩变形过程中的屈服强度,计算其能量吸收密度、互补能和比吸收能(SEA)。结果表明,与相同厚度的纯Ni和Cu夹层板相比,复合夹层板的性能有明显改善。增加PPI和金属层可提高力学性能和能量吸收性能,当PPI为6时,屈服强度(能量吸收密度)由聚合物夹层板的0.12 MPa(0.12MJ/m^(3))提高到三层金属夹层板的1.83MPa(0.67 MJ/m^(3))。对夹层板结构归一化能量的研究表明,夹层板具有可预测的塑性变形行为,多金属层改善了新型夹层板的力学性能。其能量吸收性能的显著增强可保证材料在不同行业的独特应用。

关键词：夹层板能量吸收金属泡沫 Voronoi结构增材制造金属电层级

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Numerical study of power production from tidal energy in the Khuran Channel and its feedback on background hydrodynamics

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Acta Oceanologica Sinica 2022年第5期41卷 173-182页

作者： Davood Shariatmadari seyed mostafa Siadatmousavi Cyrus Ershadi Civil Engineering Department Faculty of Technology and EngineeringUniversity of HormozganHormozganBandar Abbas***Iran School of Civil Engineering Iran University of Science and TechnologyTehran***Iran

This study focuses on the development of a farm of tidal turbines in the Khuran *** important factors include the location of turbines and their hydrodynamic effects on the environment.A three-dimensional circulation model for the Persian Gulf is employed for the comprehensive evaluation of the tidal energy potential throughout the study *** model is validated by using in situ observations of water level and current *** appropriate potential points for extracting the tidal energy were identified in the Persian Gulf using the model *** Khuran Channel,located in the north of Qeshm Island,was found to be the best place to extract tidal energy inside the Persian *** adding the term of momentum losses to the governing equations,the feedback of extracting energy on the hydrodynamic around Qeshm Island was *** simulation results show that the average daily power production of a tidal farm with 99 turbines for one month is approximately 1.3 *** tidal farm also has a significant impact on the water level inside the Khuran Channel,especially near the tidal farm where these fluctuations exceed 4 *** change in the current speed caused by wake reaches 0.4 m/*** effects were active up to 7 km downstream of the *** current velocity was also estimated to be 1.6 m/s and 2.1 m/s during the spring and ebb tides within the channel,respectively.

关键词： renewable energy tidal energy Khuran Channel tidal horizontal axis turbine turbine farm Delft3D

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Mathematical modeling of fractional derivatives for magnetohydrodynamic fluid flow between two parallel plates by the radial basis function method

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Theoretical & Applied Mechanics Letters 2022年第4期12卷 241-250页

作者： Saman Hosseinzadeh seyed Mahdi Emadi seyed mostafa Mousavi Davood Domairry Ganji Department of Mechanical Engineering Babol Noshirvani University of TechnologyBabolIran

Investigations into the magnetohydrodynamics of viscous fluids have become more important in recent years,owing to their practical significance and numerous applications in astro-physical and geo-physical *** this paper,the radial base function was utilized to answer fractional equation associated with fluid flow passing through two parallel flat plates with a magnetic *** magnetohydrodynamics coupled stress fluid flows between two parallel plates,with the bottom plate being stationary and the top plate moving at a persistent *** compared the radial basis function approach to the numerical method(fourth-order Range-Kutta)in order to verify its *** findings demonstrated that the discrepancy between these two techniques is quite negligible,indicating that this method is very *** impact of the magnetic field parameter and Reynolds number on the velocity distribution perpendicular to the fluid flow direction is ***,the velocity parameter is compared for diverse conditionsα,Reynolds and position(y),the maximum of which occurs atα=***,the maximum velocity values occur inα=0.4 and Re=1000 and the concavity of the graph is less forα=0.8.

关键词： Magnetohydrodynamic fluid Fractional equation Radial basis function method Numerical method

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A simple granulation technique for preparing high-porosity nano copper oxide(Ⅱ) catalyst beads

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Particuology 2011年第5期9卷 480-485页

作者： seyed Javad Ahmadi Mohammad Outokesh Morteza hosseinpour Tahereh Mousavand Jaber Ebne Hayyan Research Laboratory School of Energy Engineering Sharif University of Technology Department of Mechanical Engineering McGill University

A simple and efficient method was developed for fabricating spherical granules of CuO catalyst via a three-step procedure. In the first step, copper oxide nanoparticles were synthesized by hydrothermal decomposition of copper nitrate solution under supercritical condition. Then, they were immobilized in the polymeric matrix of calcium alginate, and followed by high-temperature calcination in an air stream as the third step, in which carbonaceous materials were oxidized, to result in a pebble-type catalyst of high porosity. The produced CuO nanoparticles were characterized by transmission electron microscopy （TEM） that revealed an average size of 5 nm, X-ray diffractometry （XRD）, and thermo gravimetric （TG） analysis. The catalysts were further investigated by BET test for measurement of their surface area, and by temperature-programmed reduction analysis （H2-TPR） for determination of catalytic activity. The results demonstrated that immobilization of the CuO nanoparticle in the polymeric matrix of calcium alginate, followed by calcination at elevated temperatures, could result in notable mechanical strength and enhanced catalytic activity due to preservation of the high surface area, both valuable for practical applications.

关键词： CuO nanoparticles Catalyst Hydrothermal synthesis Supercritical water Granulation Calcium alginate

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Erratum:Cooperative distributed state estimation:resilient topologies against smart spoofers

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Control Theory and Technology 2023年第4期21卷 613-614页

作者： mostafa Safi seyed Mehran Dibaji Hideaki Ishii Amirkabir University of Technology HafezTehran424Iran Department of Mechanical Engineering Massachusetts Institute of TechnologyCambridgeMAUSA Department of Computer Science Tokyo Institute of TechnologyYokohamaJapan

In the original publication of this article[1],the second author seyed Mehran Dibaji and the third author Hideaki Ishii were mentioned in the‘Acknowledgments'*** publication,authors agreed the contribution should hav... 详细信息

关键词： smart mentioned ledgment

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Electrodeposition of nanostructured Ti/(Ru+Ti+Ce)O_2 coatings

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Rare Metals 2018年第1期37卷 13-20页

作者： seyed mostafa Peyghambari Mardali Yousefpour Faculty of Materials and Metallurgical Engineering Semnan University

A nanostructured ternary coating of Ti/（Ru ＋ Ti ＋ Ce）O2 was prepared by the conventional electrodeposition on the titanium substrate as the cathode with different numbers of coating layers. The main objective of this work was to study nanostructured coatings of ceramic materials. For this purpose, the amount of precursor materials in the electrolyte was a variable parameter. Furthermore, the salt of TiCl4/RuCl3·xH2 O/Ce（NO3）3·6 H2 O with different amounts, hydrogen peroxide, methanol, and distilled water were used as an aqueousunaqueous bath. In addition, the coated samples were put to heat at 300, 450, 650, and 850℃ in an electric furnace for1 h. The crystalline phase of the coating was characterized by X-ray diffraction（XRD）. The chemical composition and microstructure of the coating were studied using energydispersive spectroscopy（EDS） and scanning electron microscopy analysis（SEM）. Moreover, the electrochemical measurement of Ti/（Ru ＋ Ti ＋ Ce）O2 coatings was carried out. Results show that with the increase in the number of coating layers, the quality of morphology is ***, the best quality of coatings is obtained at six layers on the titanium substrate with electrolyte including TiO2/RuO2/CeO2 with the molar ratio of 70：5：25 after heat treatment at 450 ℃ for 1 h. Besides,with the increase in Ce02 content from 5 wt% to 25 wt% and the number of coating layers, higher thickness of about（20.0±0.1） μm and minimum over potential for chlorine evolution were obtained.

关键词： Oxides Coating Heat treatment Interface Thin films

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Experimental and numerical analysis of beam to column joints in steel structures

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Frontiers of Structural and Civil Engineering 2018年第4期12卷 642-661页

作者： Gholamreza ABDOLLAHZADEH seyed mostafa SHABANIAN Faculty of Civil Engineering Babol Noshirvani University of TechnologyBabolIran

The behaviors such as extreme non-elastic response, constant changes in roughness and resistance, as well as formability under extreme loads such as earthquakes are the primary challenges in the modeling of beam-to-column connections. In this research, two modeling methods including mechanical and neural network methods have been presented in order to model the complex hysteresis behavior of beam-to-column connections with flange plate. First, the component-based mechanical model will be introduced in which every source of transformation has been shown only with geometrical and material properties. This is followed by the investigation of a neural network method for direct extraction of information out of experimental data. For the validation of behavioral curves as well as training of the neural network, the experiments were carried out on samples with real dimensions of beam-to-column connections with flange plate in the laboratory. At the end, the combinational modeling framework is presented. The comparisons reveal that the combinational modeling is able to display the complex narrowed hysteresis behavior of the beam-to-column connections with flange plate. This model has also been successfully employed for the prediction of the behavior of a newly designed connection.

关键词： beam to column connections experiments component method neural network model combinational modeling

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Spontaneous xenogeneic GvHD in Wilms'tumor Patient-Derived xenograft models and potential solutions

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Animal Models and Experimental Medicine 2022年第4期5卷 389-396页

作者： seyed mostafa Monzavi Ahad Muhammadnejad Maryam Behfar Amir Arsalan Khorsand Samad Muhammadnejad Abdol-Mohammad Kajbafzadeh Department of Applied Cell Sciences School of Advanced Technologies in MedicineTehran University of Medical SciencesTehranIran Pediatric Urology and Regenerative Medicine Research Center Tehran University of Medical SciencesTehranIran Gene Therapy Research Center Digestive Diseases Research InstituteTehran University of Medical SciencesTehranIran Cancer Biology Research Center Cancer Institute of IranTehran University of Medical SciencesTehranIran PDX Platform Biomarker Evaluation and Supervision Team for Personalized MedicineMolecular Tumor BoardCancer Institute of IranTehran University of Medical SciencesTehranIran Pediatric Cell and Gene Therapy Research Center Tehran University of Medical SciencesTehranIran

Severely immunocompromised ***-PrkdcIl2rg(NOG)mice are among the ideal animal recipients for generation of human cancer *** of human solid tumors having abundant tumor-i nfiltrating lymphocytes(TILs)can induce xenogeneic graft-versus-host disease(xGvHD)following engraftment and expansion of the TILs inside the animal ***’tumor(WT)has not been recognized as a lymphocyte-predominant ***,3 consecutive generations of NOG mice bearing WT patient-derived xenografts(PDX)xenotransplanted from a single donor showed different degrees of inflammatory symptoms after transplantation before any therapeutic *** the initial generation,dermatitis,auto-amputation of digits,weight loss,lymphadenopathy,hepatitis,and interstitial pneumonitis were *** antibiotic treatment,no response was noticed,and thus the animals were prematurely euthanized(day 47 posttransplantation).Laboratory and histopathologic evaluations revealed lymphoid infiltrates positively immunostained with anti-human CD3 and CD8 antibodies in the xenografts and primary tumor,whereas no microbial infection or lymphoproliferative disorder was *** of the next generation that lived longer(91 days)developed sclerotic skin changes and more severe *** symptoms were milder in the last *** xenografts of the last 2 generations also contained TILs,and lacked lymphoproliferative *** systemic immunoinflammatory syndrome in the absence of microbial infection and posttransplant lymphoproliferative disorder was suggestive of *** there are few reports of xGvHD in severely immunodeficient mice xenotransplanted from lymphodominant tumor xenografts,this report for the first time documented serial xGvHD in consecutive passages of WT PDX-bearing models and discussed potential solutions to prevent such an undesired complication.

关键词： graft-versus-host disease patient-derived xenograft models tumor-infiltrating lymphocytes Wilms’tumor

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A probabilistic model for assessing the reliability of wind farms in a power system

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Journal of Zhejiang University-Science C(Computers and Electronics) 2013年第6期14卷 464-474页

作者： mostafa hosseinpour Habib RAJABI MASHHADI Mohammad Ebrahim HAJIABAD Faculty of Engineering Department of Electrical EngineeringFerdowsi University of MashhadMashhadIran Center of Excellence on Soft Computing and Intelligent Information Processing Ferdowsi University of MashhadMashhadIran

Modeling the generation of a wind farm and its effect on power system reliability is a challenging task,largely due to the random behavior of the output *** this paper,we propose a new probabilistic model for assessing the reliability of wind farms in a power system at hierarchical level II(HLII),using a Monte Carlo *** proposed model shows the effect of correlation between wind and load on reliability *** can also be used for identifying the priority of various points of the network for installing new wind farms,to promote the reliability of the whole system.A simple grid at hierarchical level I(HLI) and a network in the north-eastern region of Iran are *** results showed that the correlation between wind and load significantly affects the reliability.

关键词： Wind farm Reliability Priority Probabilistic model

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