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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 properties.The 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 photocatalyst.The 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 bacteria.Notably,Er_(2)TiO_(5)@Ag NCPs exhibit significantly higher minimum bactericidal concentration(MBC) values compared to Er_(2)TiO_(5) NPs.The antibacterial effect of Er_(2)TiO_(5)@Ag NCPs is particularly pronounced against S.aureus and Pseudomonas aeruginosa,while demonstrating moderate effects on Escherichia coli and Enterococcus faecalis.To assess the biocompatibility of the synthesized materials,we investigated their internalization by MCF-7 cells.Encouragingly,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 fields.Intriguingly,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 properties.This 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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Evaluation of Hydrocarbon Potential in the Jahrom Area, Interior Fars, Zagros

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Open Journal of Geology 2017年第3期7卷 429-442页

作者： mehdi hosseinpour Zahra Maleki Mohsen Aleali Department of Petroleum Engineering Science and Research Branch Islamic Azad University Tehran Iran Department of Geology Science and Research Branch Islamic Azad University Tehran Iran

The study area is located in the Fars area (Interior Fars sub-basin). This area, which is part of the Zagros fold-thrust belt, is located in Zagros simple folded sub zone. It is known as one of the most important regions in the world Gas rich. In this area, anticlinal folds are a different orientation of such as the North Western-South Eastern, East-West and North Eastern-South Western. The Karbasi and Khaftar anticlines are case study anticlines in the interior Fars sub-basin (Fassa area). The anticlines in the Fars region, which are located in the Zagros fold-thrust belt, are valuable because they possess several hydrocarbons. The main aim of this paper is evaluation of hydrocarbon potential in the Jahrom area (Interior Fars) based on interpretation of the Isopach maps and well data. This paper presents part of the results of a regional study of the Coastal Fars area in the Zagros Simply folded belt, based on original fieldwork, satellite images, structural sections, geological maps and well data. In order to investigate of periods Nezamabad fault activity, Isopach maps of the study area has been prepared based on well drilling data and the thickness of the drilled formations. In this study utilizes the thickness of the drilled formations in the study area, for each sedimentary unit was carried out to prepare Isopach maps. The Isopach map prepared based on GIS software method and exploration well data. The Nezamabad fault has been lacked of activity at the deposition time of the Dalan, Kangan, Dashtak, Fahliyan, Gadvan, Dariyan, Kazhdomi, Sarvak, Gurpi and Pabdeh formations within the Khaftar and Karbasi anticline area. Accordingly, changes in basin floor, at the time of sedimentation these formations has not been affected by the Nezamabad fault. Probably the Nezamabad fault has been activated during deposition of the Surmeh, Hith, Laffan and Ilam formations and in this area paleo-basin has been controlled by this fault. In other words, it seems that, activity of the Nezamabad fault in this area have been limit

关键词： Hydrocarbon Potential Jahrom Area Nezamabad Fault Interior Fars Zagros

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Fault diagnosis of tractor auxiliary gearbox using vibration analysis and random forest classifier

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Information Processing in Agriculture 2022年第1期9卷 60-67页

作者： Mohammad hosseinpour-Zarnaq Mahmoud Omid Ebrahim Biabani-Aghdam Department of Agricultural Machinery Engineering Faculty of Agricultural Engineering and TechnologyUniversity of TehranKarajIran Biosystems Engineering Department Tarbiat Modares UniversityTehranIran

Accurate detection of mechanical components faults is an essential step for reduction of repair cost,human injury probability and loss of production.Using intelligent fault diagno-sis systems in tractor could prevent secondary damage,thereby avoiding heavy conse-quences.In this study,fault diagnosis of tractor auxiliary gearbox is presented.Vibration signals of healthy and faulty pinions gear under three different operational conditions(Rotational speeds of 600 RPM,1350 RPM and 2000 RPM)were collected,and discrete wave-let transform(DWT)was used as signal processing.Useful statistical features were calcu-lated from collected signals.Correlation-based feature selection(CFS)method was used to find the best features.Random forest(RF)and multilayer perceptron(MLP)neural net-works were employed to classify the data.The overall accuracy of RF classifier without using feature selection were 86.25%,at 600 RPM.The corresponding values of RF trained with the optimal 6 features by using CFS was 92.5%.The best results obtained at 1350 RPM,since the detection accuracy was 95%.The results of this study demonstrated the effectiveness and feasibility of the proposed method for fault diagnosis of tractor auxiliary gearbox.

关键词： Gearbox Fault diagnosis Vibration analysis Discrete wavelet transform Feature selection Random forest

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Nanotechnology for the management of COVID-19 during the pandemic and in the post-pandemic era

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National Science Review 2022年第10期9卷 230-242页

作者： Chun Xu Chang Lei Sepanta hosseinpour Saso Ivanovski Laurence J.Walsh Ali Khademhosseini School of Dentistry The University of Queensland Centre for Orofacial Regeneration Reconstruction and Rehabilitation (COR3) School of Dentistry The University of Queensland Australian Institute for Bioengineering and Nanotechnology The University of Queensland Terasaki Institute for Biomedical Innovation

Following the global COVID-19 pandemic,nanotechnology has been at the forefront of research efforts and enables the fast development of diagnostic tools,vaccines and antiviral treatment for this novel virus(SARS-CoV-2).In this review,we first summarize nanotechnology with regard to the detection of SARS-C oV-2,including nanoparticle-based techniques such as rapid antigen testing,and nanopore-based se quencing and sensing techniques.Then we investigate nanote chnology as it applies to the development of COVID-19 vaccines and anti-SARS-CoV-2 nanomaterials.We also highlight nanotechnology for the post-pandemic era,by providing tools for the battle with SARS-C oV-2 variants and for enhancing the global distribution of vaccines.Nanotechnology not only contributes to the management of the ongoing COVID-19 pandemic but also provides platforms for the prevention,rapid diagnosis,vaccines and antiviral drugs of possible future virus outbreaks.

关键词： COVID-19 SARS-CoV-2 diagnosis nanotechnology vaccines

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Electromagnetic field exposure as a plausible approach to enhance the proliferation and differentiation of mesenchymal stem cells in clinically relevant scenarios

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2022年第1期23卷 42-57页

作者： Haslinda Abdul HAMID Vahid hosseinpour SARMADI Vivek PRASAD Rajesh RAMASAMY Azizi MISKON Bio-artificial Organ and Regenerative Medicine Unit National Defense University of MalaysiaKuala Lumpur57000Malaysia Cellular and Molecular Research Centre Iran University of Medical SciencesTehran***Iran Institutes of Regenerative Medicine Iran University of Medical SciencesTehran***Iran Stem Cell and Immunity Research Group Immunology LaboratoryDepartment of PathologyFaculty of Medicine and Health SciencesUniversiti Putra Malaysia(UPM)Seri KembanganSelangor43400Malaysia

Mesenchymal stem/stromal cell(MSC)-based therapy has been regarded as one of the most revolutionary breakthroughs in the history of modern medicine owing to its myriad of immunoregulatory and regenerative properties.With the rapid progress in the fields of osteo-and musculoskeletal therapies,the demand for MSC-based treatment modalities is becoming increasingly prominent.In this endeavor,researchers around the world have devised new and innovative techniques to support the proliferation of MSCs while minimizing the loss of hallmark features of stem cells.One such example is electromagnetic field(EMF)exposure,which is an alternative approach with promising potential.In this review,we present a critical discourse on the efficiency,practicability,and limitations of some of the relevant methods,with insurmountable evidence backing the implementation of EMF as a feasible strategy for the clinically relevant expansion of MSCs.

关键词： Electromagnetic field Proliferation Mesenchymal stem cell Therapy

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Microorganism-derived biological macromolecules for tissue engineering

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Frontiers of Medicine 2022年第3期16卷 358-377页

作者： Naser Amini Peiman Brouki Milan Vahid hosseinpour Sarmadi Bahareh Derakhshanmehr Ahmad Hivechi Fateme Khodaei Masoud Hamidi Sara Ashraf Ghazaleh Larijani Alireza Rezapour Cellular and Molecular Research Center Iran University of Medical SciencesTehran ***Iran Institutes of Regenerative Medicine Faculty of Advanced Technologies in MedicineIran University of Medical SciencesTehran ***Iran Department of Tissue Engineering and Regenerative Medicine Faculty of Advanced Technologies in MedicineIran University of Medical SciencesTehran ***Iran Department of Pharmaceutics University of MinnesotaMN 55455USA Burn Research Center Department of Plastic and Reconstructive SurgeryIran University of Medical SciencesTehran ***Iran Department of Medical Biotechnology Faculty of ParamedicineGuilan University of Medical SciencesRasht ***Iran Department of Biology Science and Research BranchIslamic Azad UniversityTehran ***Iran Cellular and Molecular Research Centre Qom University of Medical SciencesQom ***Iran Department of Tissue Engineering and Regenerative Medicine School of MedicineQom University of Medical SciencesQom ***Iran

According to literature,certain microorganism productions mediate biological effects.However,their beneficial characteristics remain unclear.Nowadays,scientists concentrate on obtaining natural materials from live creatures as new sources to produce innovative smart biomaterials for increasing tissue reconstruction in tissue engineering and regenerative medicine.The present review aims to introduce microorganism-derived biological macromolecules,such as pullulan,alginate,dextran,curdlan,and hyaluronic acid,and their available sources for tissue engineering.Growing evidence indicates that these materials can be used as biological material in scaffolds to enhance regeneration in damaged tissues and contribute to cosmetic and dermatological applications.These natural-based materials are attractive in pharmaceutical,regenerative medicine,and biomedical applications.This study provides a detailed overview of natural-based biomaterials,their chemical and physical properties,and new directions for future research and therapeutic applications.

关键词： biological macromolecules regenerative medicine tissue engineering exopolysaccharide carbohydrate

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Utilization of chest tube as an esophagus stent in pediatric caustic injuries:A retrospective study

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World Journal of Clinical Pediatrics 2022年第5期11卷 419-428页

作者： Maryam Salimi Hamidreza hosseinpour Reza Shahriarirad Samira Esfandiari Fatemeh Pooresmaeel Shirin Sarejloo Hamidreza Foroutan Department of Orthopaedic Surgery Shiraz University of Medical SciencesShiraz ***Iran Department of Surgery Shiraz University of Medical SciencesShiraz ***Iran Department of Surgery Shiraz ***Iran Department of Cardiology Shiraz University of Medical SciencesShiraz 0***Iran Department of Surgery Shiraz Laparoscopic Research CenterShiraz University of Medical SciencesShiraz ***Iran

BACKGROUND The management of caustic esophageal burns in the pediatric population has changed over the years,while the most optimal management with regards to effectiveness,availability,and cost-beneficent stays controvertible.AIM To describe how to utilize a chest tube for esophageal stenting in pediatrics.METHODS Data regarding the etiology,treatment,and complications of caustic injury in pediatrics over 10 years was collected retrospectively.Furthermore,data regarding the patient's follow-up who underwent esophageal chest tube(ECT)were collected.The ECT was prepared by carving a narrowed section in the chest tube while maintaining the radiopaque section.The ECT will then be positioned from the cricopharyngeal and exited through the nostril and fixed on the patient's cheek.RESULTS During the period of our study,data from 57 patients with an average age of 2.5 years(range 1-12;SD=1.7)were obtained.The results showed that 89%of esophageal injury was due to alkaline and 9.4%were caused by acidic agents.The treatment methods showed that 29 patients(50.8%)recovered with dilatation alone.In 16 patients(28.06%),the esophageal repair was performed by using the colon,and in 5 patients(8.7%),other surgical methods were used and in 7 patients(12.2%),the ECT stents were used.ECT was inserted in 7 cases with a mean age of 2(range:1.5-3)years who were classified as grade IIB or III.Grading was performed by endoscopy assessment on the first day.Antibiotics and corticosteroids were administrated as initial medical management for all patients.ECT implantation was done during the first 8 d for 5 out of 7 cases(mean:3.8 d).For the 2 patients,ECT was used after 27(patient 6)d and 83(patient 7)d.The reason for late stenting in these patients was a postponed referral to our center,in which patient 7 even received 4 dilation episodes before visiting our center.ECT was removed after an average of 44 d in the first 5 patients,while in the other 2 patients(6 and 7)was 2 and 1 wk,respectively.There was no complication related to,or failu

关键词： Caustic injury Pediatric Esophageal stent Facility Emergency

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Mechanical and energy absorption properties of multilayered ultra-light sandwich panels produced by 3D-printing and electroforming

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Transactions of Nonferrous Metals Society of China 2023年

作者： Mehrnoosh hosseinpour Salar ROHANI NEJAD Seyed Mohammad Hossein MIRBAGHERI Department of Materials and Metallurgical Engineering， Amirkabir University of Technology

This investigation aims to assess the mechanical and energy absorption properties of the light sandwich panel portions made of open-cell polymer and metal/polymer foam cores. These multi-layered sandwich panels were produced by additive manufacturing of polymeric resin and electrodeposition of three layers of metals， Ni-Ni/Cu-Ni， with 4，5， and 6 pores per inch. The yield strength， energy absorption density， complementary energy， and SEA are measured during a uniaxial compression deformation. The results indicate that compared with pure Ni and Cu sandwich panel portions with the same thickness， the abovementioned properties of the sandwich panels had a noteworthy improvement. Mechanical and energy absorption properties improved by increasing the PPI and the presence of metallic layers. In a sandwich panel with 6 PPI， the yield strength and energy absorption density improved from 0.12 MPa (0.13 MJ.m-3) to 1.83 MPa (0.67 MJ.m-3) for the polymeric and the metallic sandwich panel， respectively. Investigations on normalized energies of these structures shows a predictable behavior for these sandwich panels during plastic deformations. The results show the multi metallic layers improved the mechanical behavior of these novel sandwich panels. Noticeable enhancement of the calculated properties of these advanced materials guarantees their unique application in variable industries.

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Improving energy storage by PCM using hybrid nanofluid[(SWCNTs-CuO)/H_(2)O]and a helical(spiral)coil:Hybrid passive techniques

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Theoretical & Applied Mechanics Letters 2023年第4期13卷 299-310页

作者： Aliakbar hosseinpour Mohsen Pourfallah Mosayeb Gholinia Department of Mechanical Engineering Babol Noshirvani University of TechnologyBabolIran Department of Mechanical Engineering Mazandaran University of Science and TechnologyBabolIran CNR-ITAE–Institute of Advanced Energy Technologies“Nicola Giordano” MessinaItaly

The aim of this study is the numerical analysis of the melting process of the phase change material(PCM)in a spiral coil.The space between the inner tube and outer shell is filled with RT-50 as PCM.Moreover,the hybrid nanofluid(with a carbon component)flows through the inner tube.The novelty of this work is to use different configurations of fin and different percentage of hybrid nanoparticles(SWCNTs-Cu O)on the PCM melting process.In the numerical model created by ANSYS-Fluent,the effect of various inlet temperatures is investigated.The results indicate that the extended surface created by extra fin has a dominant effect on melting time,so by adding the third fin,the melting time is reduced by 39.24%.The next most influential factor in PCM melting is the inlet temperature of the working fluid,so that 10°C increment of temperature result in the PCM melting time decreased by 35.41%.

关键词： PCM melting Helical coli Thermal energy storage CFD analysis

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