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Frontiers of Chemical Science and Engineering 2020年第4期14卷 579-594页

作者： alireza hadi Javad Karimi-Sabet Abolfazl Dastbaz Department of Chemical Engineering Faculty of EngineeringUniversity of TehranTehranIran Material and Nuclear Fuel Research School(MNFRS) Nuclear Science and Technology Research InstituteTehranIran

The room temperature synthesis of ZIF-8 micro-and nano-particles was investigated using a mixed methanol-water solvent ***-8 particles of good quality and high crystallinity were *** surface methodology was used to determine the effect of the synthesis conditions on the ZIF-8 yield,particle size distribution,and mean particle *** ligand/metal salt molar ratio followed by the amount of sodium formate(the deprotonating agent)and then the amount of water(i.e,the composition of the mixed solvent)respectively had the largest effects on both the ZIF-8 yield and particle *** showed that mixing of solvents with different strengths in producing ZIF-8 crystals is a practical method to size-controlled synthesis of ZIF-8 *** method is more favorable for industrial-scale ZIF-8 synthesis than using excess amounts of ligands or chemical additives(like sodium formate).In addition,ZIF-8 samples with different mean particle sizes(100,500,and 1000 nm)were used for CO adsorption and the mid-sized ZIF-8 particles had the highest adsorption capacity.

关键词： metal organic frameworks zeolitic imidazo-late frameworks ZIF-8 response surface methodology Box Behnken design CO adsorption

A contrasting analysis of CO_(2) and N_(2) foam flood for enhanced oil recovery and geological storage of CO_(2)

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Petroleum Research 2024年第1期9卷 55-60页

作者： alireza Roozbahani Farshad Soofivan Ali Sagban Hassoon Al-Tameemi hadi Abdollahi Sogand Saatchi Abdolhamid Ansari Petroleum Engineering Department Faculty of Chemical EngineeringTarbiat Modares UniversityTehranIran School of Chemical and Petroleum Engineering Shiraz UniversityShirazIran School of Chemical and Petroleum Engineering Shiraz BranchIslamic Azad UniversityShirazIran Department of Petroleum Engineering Science and Research BranchAzad UniversityTehranIran Department of Chemistry and Chemical Engineering Rasht BranchIslamic Azad UniversityRashtIran Department of Petroleum Engineering Lamerd BranchIslamic Azad UniversityLamerdIran

Foam flooding using CO_(2)has emerged as a promising method for both enhanced oil recovery(EOR)and the storage of CO_(2)in geological *** study conducts a thorough analysis of the behavior of CO_(2)and N_(2)foams in bulk and porous media,utilizing bubble-scale analyses and foam flooding *** study compares the foamability and longevity of CO_(2)and N_(2)foams,with findings indicating that N_(2)foam bubbles tend to be smaller and less varied in size than CO_(2)foam bubbles,leading to increased foam ***,the study compares the half-lives of CO_(2)and N_(2)foams generated through sparging and winding methods,showing that N_(2)foam has half-lives 22 and 10 times greater than CO_(2)foam when produced using the sparging and winding methods,***,CO_(2)foam generated through the sparging method had a lower foaming volume than N_(2)foam due to CO_(2)'s *** the foam flooding experiments,N_(2)foam proved more effective in recovering oil from porous media than CO_(2)foam,thus demonstrating the effectiveness of the foam injection *** results offer valuable insights into the differing performance of N_(2)and CO_(2)foam floods for EOR and CO_(2)geological storage.

关键词： CO_(2) storage Foam flood Enhanced oil recovery N_(2) foam CO_(2) foam

Fracture analyses of different pre-holed concrete specimens under compression

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Acta Mechanica Sinica 2015年第6期31卷 855-870页

作者： hadi Haeri alireza Khaloo Mohammad Fatehi Marji Department of Civil Engineering Sharif University of Technology Member of National Elites Foundation Center of Excellence in Structure and Earthquake Engineering Sharif University of Technology Mine Exploitation Engineering Department Faculty of Mining and Metallurgy Yazd University

Crack propagation processes in specially prepared concrete discs and rectangular specimens containing a single cylindrical hole or multiple holes of varying diameters have been studied both experimentally and numerically. In this research, the cracks coalescence paths in Brazilian disc and rectangular specimens made from rock-like material containing multi-holes are investigated. These concrete specimens are specially prepared from an appropriate mixture of Portland Pozzolana Cement （PPC）, fine sands, and water. The pre-holed Brazilian discs and rectangular specimens are experimentally tested under compression. The breakage load in the ring type disc specimens containing an axial hole with varying diameters is measured and the distribution of the induced lateral stress is obtained. The mechanism of cracks propagation in the wall of the ring type specimens is also stud- ied. In the case of multi-hole Brazilian disc and rectangular specimens, the cracks propagation and cracks coalescence are also investigated. These experiments are numerically modeled by a modified higher order displacement discontinuity method. It has been shown that the corresponding experimental and numerical results are in good agreement with each other. The results presented in this research vali date the accuracy and applicability of these crack analyses procedures.

关键词： Concrete rings Pre-holed Brazilian disc ·Rectangular specimens Crack analyses Coalescence ·Induced lateral stress

Investigation of the stability and hydrodynamics of Tetrosomus gibbosus carapace in different pitchangles

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Journal of Hydrodynamics 2019年第2期31卷 368-378页

作者： Mahyar Malekidelarestaqi alireza Riasi hadi Moradi Mohammad Samadpour School of Mechanical Engineering University of TehranTehranIran Intelligent Systems Research Institute Sungkyunkwan UniversitySeoulKorea School of Electrics and Computer Engineering University of TehranTehranIran School of Mechanical Engineering Amirkabir University of TechnologyTehranIran

In this paper,stability properties of Tetrosomus gibbosus have been experimentally and numerically studied in pitching *** fish lives in southern offshores of *** usually live in extremely turbulent parts of seas and oceans,with high stability and maneuverability that has caught the attention of *** body shape let them swim with a quite rapid *** on Boxfishes have had influences on automotive and marine *** CAD file of the boxfish was created using optical *** a model was built and tested in a subsonic wind tunnel and a numerical study was conducted in virtual wind *** experimental results are consistent with the numerical ones and also support the findings of other studies on similar *** results show that the flow around the fish,which is a consequence of its body shape,tries to maintain the stable position of the fish by resisting against the external force tilting the fish from its stable horizontal *** ventral and dorsal keels of the boxfish generate column-like vortices in horizontal direction which play an imperative role in maintaining the stability of the fish.

关键词： Boxfish Tetrosomus gibbosus humpback turretfish hydrodynamic stability experimental fluid mechanics bio-inspired engineering

Stripping voltammetric determination of Cd(Ⅱ)based on multiwalled carbon nanotube functionalized with 1-(2-pyridylazo)-2-naphthol

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Chinese Chemical Letters 2011年第12期22卷 1469-1472页

作者： alireza Mohadesi hadi Beitollahi Mohammad Ali Karimi Department of Chemistry Payame Noor UniversityTehran 19395-4697Iran Department of Chemistry Payame Noor University(PNU)P.O.Box 76175-559KermanIran Environmental Department Research Institute of Environmental SciencesInternational Center for SciencesHigh Technology and Environmental SciencesKermanIran Department of Chemistry & Nanoscience and Nanotechnology Research Laboratory(NNRL) Payame Noor University(PNU)SirjanIran

The present work has focused on the modification of multiwalled carbon nanotube with a ligand,l-（2-pyridylazo）-2-naphthol, and its potential application for the development of a new,simple and selective modified glassy carbon electrode for stripping voltammetric determination of Cd（Ⅱ）.The analytical curve for Cd（Ⅱ） ions covered the linear range varying from 0.8 up to 220.4μgL^（-1）.The limit of detection was found to be 0.1μgL^（-1）,while the relative standard deviation（RSD） at 50.0μgL^（-1） was 1.8%（n=5）.This modified electrode was successfully applied for determination of Cd（Ⅱ） in some water samples.

关键词： Multiwalled carbon nanotube 1-(2-Pyridylazo)-2-naphthol Cadmium(Ⅱ) Stripping voltammetry

Spectral features and antibacterial properties of Cu-doped ZnO nanoparticles prepared by sol-gel method

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Chinese Physics B 2016年第7期25卷 459-465页

作者： alireza Samavati A F Ismail hadi Nur Z Othaman M K Mustafa Centre for Sustainable Nanomaterials Ibnu Sina Institute for Scientific and Industrial ResearchUniversiti Teknologi Malaysia Advanced Membrane Technology Research Centre (AMTEC) Universiti Teknologi Malaysia Faculty of Science Technology and Human Development Universiti Tun Hussein Onn Malaysia

Zn（1-x）Cux O（x=0.00, 0.01, 0.03, and 0.05） nanoparticles are synthesized via the sol-gel technique using gelatin and nitrate precursors. The impact of copper concentration on the structural, optical, and antibacterial properties of these nanoparticles is demonstrated. Powder x-ray diffraction investigations have illustrated the organized Cu doping into ZnO nanoparticles up to Cu concentration of 5%（x = 0.05）. However, the peak corresponding to CuO for x= 0.01 is not distinguishable. The images of field emission scanning electron microscopy demonstrate the existence of a nearly spherical shape with a size in the range of 30–52 nm. Doping Cu creates the Cu–O–Zn on the surface and results in a decrease in the crystallite size. Photoluminescence and absorption spectra display that doping Cu causes an increment in the energy band gap. The antibacterial activities of the nanoparticles are examined against Escherichia coli（Gram negative bacteria）cultures using optical density at 600 nm and a comparison of the size of inhibition zone diameter. It is found that both pure and doped ZnO nanoparticles indicate appropriate antibacterial activity which rises with Cu doping.

关键词： Cu-doped ZnO nanoparticles photoluminescence antibacterial E.coli

Citalopram increases the differentiation efficacy of bone marrow mesenchymal stem cells into neuronal-like cells

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Neural Regeneration Research 2014年第8期9卷 845-850页

作者： Javad Verdi Seyed Abdolreza Mortazavi-Tabatabaei Shiva Sharif hadi Verdi alireza Shoae-Hassani Department of Applied Cell Sciences School of Advanced Technologies in MedicineTehran University of Medical Sciences Department of Stem Cells and Tissue Engineering Research Center for Science and Technology in MedicineTehran University of Medical Sciences Department of Tissue Engineering School of Advanced Technologies in MedicineIran University of Medical Sciences

Several studies have demonstrated that selective serotonin reuptake inhibitor antidepressants can promote neuronal cell proliferation and enhance neuroplasticity both in vitro and in vivo. It is hypothesized that citalopram, a selective serotonin reuptake inhibitor, can promote the neuronal differentiation of adult bone marrow mesenchymal stem cells. Citalopram strongly enhanced neuronal characteristics of the cells derived from bone marrow mesenchymal stem cells. The rate of cell death was decreased in citalopram-treated bone marrow mesenchymal stem cells than in control cells in neurobasal medium. In addition, the cumulative population doubling level of the citalopram-treated cells was signiifcantly increased compared to that of control cells. Also BrdU incorporation was elevated in citalopram-treated cells. These ifndings suggest that citalopram can improve the neuronal-like cell differentiation of bone marrow mesenchymal stem cells by increasing cell proliferation and survival while maintaining their neuronal characteristics.

关键词： nerve regeneration citalopram stem cells bone marrow mesenchymal stem cells survival proliferation differentiation neurons neural regeneration

Modeling industrial thickener using computational fluid dynamics(CFD),a case study:Tailing thickener in the Sarcheshmeh copper mine

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International Journal of Mining Science and Technology 2013年第6期23卷 885-892页

作者： Majid Ebrahimzadeh Gheshlaghi Ataallah Soltani Goharrizi alireza Aghajani Shahrivar hadi Abdollahi Department of Chemical Engineering College of EngineeringShahid Bahonar University of Kerman Mineral Processing Division Faculty of Mining EngineeringUniversity of Tehran

Separation of particles from liquid in the large gravitational tanks is widely used in mining and industrial wastewater treatment *** is key unit in the operational processes of hydrometallurgy and is used to separate solid from *** this study,population balance models were combined with computational fluid dynamics(CFD)for modeling the tailing *** such as feed flow rate,flocculant dosage,inlet solid percent and feedwell were *** was used to simulate the industrial tailing thickener with settled bed of 120 m diameter which is located in the Sarcheshmeh copper *** factor of drag force that defines the rake torque of rotating paddles on the bed was also *** phases turbulence model of Eulerian/Eulerian in accordance with turbulence model ofκ-ε.was used in the *** population balance model consists of 15 groups of particle sizes with Luo and Lehr kernel was used for aggregation/breakage *** simulation results showed good agreement with the operational data.

关键词： Thickener Feedwell Modeling Solid percent Rake Torque

Can Social Media be Used to Control Academic Stress?An Application of the Theory of Planned Behavior

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International Journal of Mental Health Promotion 2022年第1期24卷 25-38页

作者： Maliheh Shadi Nooshin Peyman Ali Taghipour alireza Jafari hadi Tehrani Department of Health Education&Health Promotion School of HealthStudent Research CommitteeMashhad University of Medical SciencesMashhad13131-99137Iran Health Education&Health Promotion Social Determinants of Health Research CenterMashhad University of Medical SciencesMashhad13131-99137Iran Epidemiology Social Determinants of Health Research CenterMashhad University of Medical SciencesMashhad13131-99137Iran Social Determinants of Health Research Center Gonabad University of Medical SciencesGonabadIran

The present study was conducted aiming at investigating the effect of social media-based intervention according to the Theory of Planned Behavior(TPB)to control the academic stress of the *** study comes in two descriptive and quasi-experimental sections in the Academic Year *** order to determine the effect of planned behavioral constructs on stress levels,the descriptive study was conducted on 320 *** quasiexperimental study was organized to determine the effect of a social media-based educational intervention on the TPB on 180 *** collection was conducted through questionnaires of personal information,Gadzella’s Student-Life Stress Inventory,and researcher-made questionnaire based on the TPB,with a confirmed validity and *** predicted 15.1%of the variance of academic stress among students and the perceived behavioral control construct had the most significant effect(p<0.001).The mean score of knowledge and subject norms in the experimental group was significantly increased during the study(p<0.05).The social media intervention could reduce the students’academic stress to some extent and lead to the student’s subject norms development.

关键词： Academic stress social media students

Application of response surface methodology and central composite rotatable design for modeling the influence of some operating variables of the lab scale thickener performance

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International Journal of Mining Science and Technology 2013年第5期23卷 717-724页

作者： Aghajani Shahrivar alireza Soltani Goharrizi Ataallah Ebrahimzadeh Gheshlaghi Majid Sarafi Amir Razmirad Mohammad Abdollahi hadi Department of Chemical Engineering University of Shahid Bahonar School of Mining Engineering College of EngineeringUniversity of Tehran

This study discussed the application of response surface methodology(RSM)and central composite rotatable design(CCRD)for modeling and optimization of the influence of some operating variables on the performance of a lab scale thickener for dewatering of tailing in the flotation *** thickener operating variables,namely feed flowrate,solid percent,flocculant dosage and feedwell height were changed during the tests based on *** ranges of values of the thickener variables used in the design were a feed flowrate of 9–21 L/min,solid percent of 8%–20%,flocculant dosage of 1.25–4.25 g/t and feedwell height of 16–26 cm.A total of 30 thickening tests were conducted using lab scale thickener on flotation tailing obtained from the Sarcheshmeh copper mine,*** underflow solid percent and bed height were expressed as functions of four operating parameters of *** values were found to be in good agreement with experimental values(R2values of 0.992 and 0.997 for underflow solid percent and bed height,respectively).This study has shown that the RSM and CCRD could effciently be applied for the modeling of thickener for dewatering of flotation tailing.

关键词： Response surface methodology Central composite rotatable design Modeling Thickener