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Chinese Chemical Letters 2011年第10期22卷 1203-1206页

作者： M.Z.Kassaee Reza Mohammadi Hassan Masrouri farnaz movahedi Department of Chemistry Tarbiat Modares UniversityP.O.Box 14155-4838TehranIran

TiO_2 nanoparticles（TiO_2 NPs） worked as an efficient heterogeneous catalyst in a one-pot,three-component,and solvent free Mannich reaction;producing variousβ-aminocarbonyls in good yields,and with good *** catalyst was easily separated from the reaction mixture and was recycled four times with no significant loss of its catalytic activity.

关键词： TiO_2 nanoparticles Heterogeneous catalyst Mannich reaction β-Aminocarbonyls Solvent-free

Characterization of 3D microstructure,thermal conductivity,and heat flow of cement-based foam using imaging technique

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Frontiers of Structural and Civil Engineering 2021年第3期15卷 643-651页

作者： farnaz BATOOL Muhammad Saad KHAN Vivek BINDIGANAVILE Department of Civil Engineering NED University of Engineering&TechnologyKarachi75270Pakistan Department of Civil and Environmental Engineering University of AlbertaEdmontonT6G2R3Canada

This study presents the results of the 3D microstructure,thermal conductivity,and heat flow in cement-based foams and examines their changes with a range of *** were captured using X-ray micro computed tomography(micro-CT)imaging technique on cement-based foam samples prepared with densities of 400,600,and 800 kg/m^(3).These images were later simulated and quantified using 3D data visualization and analysis *** on the analysis,the pore volume of 11000µm^(3)was determined across the three densities,leading to optimal ***,distinct pore diameters of 15µm for 800 kg/m^(3),and 20µm for 600 and 400 kg/m^(3)were found to be *** of the pores were spherical,with only 10%appearing elongated or *** addition,a difference of 15%was observed between the 2D and 3D porosity ***,a difference of 5%was noticed between the experimentally measured thermal conductivity and the numerically predicted value and this variation was constant across the three cast *** 3D model showed that heat flows through the cement paste solids and with an increase in porosity this flow reduces.

关键词： 3D pore volume distribution X-ray tomography 3D shape factor heat flow

Generalized Hirshfeld Partitioning with Oriented and Promoted Proatoms

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物理化学学报 2018年第5期34卷 514-518页

作者： HEIDAR-ZADEH farnaz AYERS Paul W. Department of Chemistry & Chemical Biology McMaster University Hamilton Ontario L8P 4Z2 Canada Department of Inorganic and Physical Chemistry Ghent University Krijgslaan 281 (S3) 9000 Gent Belgium Center for Molecular Modeling Ghent Uni

In this study, we show how to generalize Hirshfeld partitioning methods to possibly include non-spherical proatom densities. While this generalization is numerically challenging(requiring global optimization of a large number of parameters), it is conceptually appealing because it allows the proatoms to be pre-polarized, or even promoted, to a state that more closely resembles the atom in a molecule. This method is based on first characterizing the convex set of proatom densities associated with the degenerate ground states of isolated atoms and atomic ions. The preferred orientation of the proatoms' densities are then obtained by minimizing the information–theoretic distance between the promolecular and molecular densities. If contributions from excited states(and not just degenerate ground states) are included in the convex set, this method can describe promoted atoms. While the procedure is intractable in general, if one includes only atomic states that have differing electron-numbers and/or spins, the variational principle becomes a simple convex optimization with a single unique solution.

关键词：分子量分子密度激发态原子状态

Thermo-kinetic investigation of heavy metal ions adsorption onto lignin considering coupled adsorption–desorption mechanisms:Modeling and experimental validation

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International Journal of Modeling, Simulation, and Scientific Computing 2018年第2期9卷 87-102页

作者： farnaz Seyedvakili Mohammad Samipoorgiri Tehran North Branch Islamic Azad UniversityTehranIran

A coupled adsorption–desorption thermo-kinetic model is developed incorporating both adsorption and desorption reactions.A local pseudo-equilibrium condition at the interface of adsorbent and adsorbate bulk phases was used as isotherm equation which can even be applied for multi-pollutants *** developed model is then validated using collected experimental data of heavy metal ions(Pb,Cu,Cd,Zn,and Ni).Comparisons were made for a number of isotherm and kinetic models to examine the performance of the proposed *** developed model revealed desirable accuracy and superiority over other models in predicting the adsorption behavior and can be used for other systems of *** model correlates the adsorption kinetic with an R2 value of 0.9391 and desorption kinetic with an R2 value of *** application of the proposed model to any available adsorption datasets,the individual characteristics of adsorption and desorption can be determined.

关键词： Wastewater adsorption desorption thermo-kinetic modeling isotherms

Conversion of carbon dioxide to valuable petrochemicals:An approach to clean development mechanism

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Journal of Natural Gas Chemistry 2011年第3期20卷 219-231页

作者： farnaz Tahriri Zangeneh Saeed Sahebdelfar Maryam Takht Ravanchi Catalyst Research Group Petrochemical Research and Technology Company (NPC-RT) National Petrochemical Company

The increase of atmospheric carbon dioxide and the global warming due to its greenhouse effect resulted in worldwide concerns. On the other hand, carbon dioxide might be considered as a valuable and renewable carbon source. One approach to reduce carbon dioxide emissions could be its capture and recycle via transformation into chemicals using the technologies in C1 chemistry. Despite its great interest, there are difficulties in CO2 separation on the one hand, and thermodynamic stability of carbon dioxide molecule rendering its chemical activity low on the other hand. Carbon dioxide has been already used in petrochemical industries for production of limited chemicals such as urea. The utilization of carbon dioxide does not necessarily involve development of new processes, and in certain processes such as methanol synthesis and methane steam reforming, addition of CO2 into the feed results in its utilization and increases carbon efficiency. In other cases, modifications in catalyst and/or processes, or even new catalysts and processes, are necessary. In either case, catalysis plays a crucial role in carbon dioxide conversion and effective catalysts are required for commercial realization of the related processes. Technologies for CO2 utilization are emerging after many years of research and development efforts.

关键词： carbon dioxide utilization C1 chemistry clean development mechanism catalysis greenhouse effects

A framework for analysis of extended fuzzy logic

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Journal of Zhejiang University-Science C(Computers and Electronics) 2014年第7期15卷 584-591页

作者： farnaz SABAHI M.-R.AKBARZADEH-T Center of Excellence on Soft Computing and Intelligent Information Processing Department of Electrical EngineeringFerdowsi University of Mashhad

We address a framework for the analysis of extended fuzzy logic(FLe) and elaborate mainly the key characteris-tics of FLe by proving several qualification theorems and proposing a new mathematical tool named the A-granule. Specifically, we reveal that within FLe a solution in the presence of incomplete information approaches the one gained by complete infor-mation. It is also proved that the answers and their validities have a structural isomorphism within the same context. This rela-tionship is then used to prove the representation theorem that addresses the rationality of FLe-based reasoning. As a conse-quence of the developed theoretical description of FLe, we assert that in order to solve a problem, having complete information is not a critical need; however, with more information, the answers achieved become more specific. Furthermore, reasoning based on FLe has the advantage of being computationally less expensive in the analysis of a given problem and is faster.

关键词： Extended fuzzy logic Fuzzy logic f-Transformation S-answer Validity

Fractional Analysis of Thin Film Flow of Non-Newtonian Fluid

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Computer Modeling in Engineering & Sciences 2020年第9期124卷 825-845页

作者： farnaz Ismail Mubashir Qayyum Syed Inayat Ali Shah Department of Mathematics Islamia College UniversityPeshawarPakistan Department of Sciences and Humanities National University of Computer&Emerging Sciences FASTLahorePakistan

Modeling and analysis of thin film flow with respect to magneto hydro dynamical effect has been an important theme in the field of fluid dynamics,due to its vast industrial *** analysis involves studying the behavior and response of governing equations on the basis of various parameters such as thickness of the film,film surface profile,shear stress,liquid velocity,volumetric flux,vorticity,gravity,viscosity among others,along with different boundary *** this article,we extend this analysis in fractional space using a homotopy based scheme,considering the case of a Non-Newtonian Pseudo-Plastic fluid for lifting and drainage on a vertical *** applying similarity transformations,the given problems are reduced to highly non-linear and inhomogeneous ordinary differential ***,fractional differential equations are obtained using basic definitions of fractional *** Homotopy Perturbation Method(HPM),along with fractional calculus is used for obtaining approximate *** quantities such as the velocity profile,volume flux and average velocity respectively for lift and drainage cases have been *** the best of our knowledge,the given problems have not been attempted before in fractional *** and convergence of the obtained solutions are confirmed by finding residual *** a physical perspective,a comprehensive study of the effects of various parameters on the velocity profile is also *** reveals that Stokes number St,non-Newtonian parameterand magnetic parameter M have inverse relationship with fluid velocity in lifting *** the drainage case,Stokes number St and non-Newtonian parameterhave direct relationship with fluid velocity,but magnetic parameter M shows inverse relationship with *** investigation also shows that the fractional parameterhas direct relationship with the fluid velocity in lifting case,while it has inverse relationship with velocity in the

关键词： Pseudo-plastic fluid magneto hydro dynamic fractional differential equation homotopy perturbation method

Production of Pristine Graphene Quantum Dots Based on Supercritical CO2

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Production of Pristine Graphene Quantum Dots Based on Superc...

作者： farnaz Alidad 上海交通大学

学位级别：硕士

石墨烯量子点(graphene quantum dots,GQD)是一种零维发光石墨烯纳米粒子。自石墨烯发现以来,石墨烯量子点因具有边缘效应和量子限制效应而表现出独特的电子和光学性质,吸引了越来越多的关注。它们的直径通常为2-20 nm,在生物成像、药... 详细信息

石墨烯量子点(graphene quantum dots,GQD)是一种零维发光石墨烯纳米粒子。自石墨烯发现以来,石墨烯量子点因具有边缘效应和量子限制效应而表现出独特的电子和光学性质,吸引了越来越多的关注。它们的直径通常为2-20 nm,在生物成像、药物输送、生物传感器和太阳能广电器件等方面具有广泛的应用。本文采用两种新型方法制备了石墨烯量子点,具体研究内容及结果总结如下:研究采用剪切辅助超临界CO剥离的新方法,以石墨为原料,剥离制备了直径约4nm,石墨烯层数少于7的高质量石墨烯量子点(Pristine graphene quantum dots,PGQDs),荧光量子产率达到8.6%,持续稳定地发射出蓝色荧光,显示出与激发无关的光致发光。研究发现,在剥离过程中,超临界CO压力、原料石墨的用量、剪切速度以及温度等是影响PGQDs产率的关键因素,当超临界CO压力增加、剪切速度增加、温度增加及石墨原料量减少时,PGQDs的产率会增加。在压力18 MPa、石墨质量0.5 g、剪切速度3000 rpm及45℃的条件下,PGQDs的产率最高,为1.74%。研究还采用超声辅助超临界CO剥离的方法,以石墨为原料制备了平均尺寸为4nm,石墨烯层数约为8的PGQDs,荧光量子产率为2.8%,发出浅蓝色荧光。实验结果表明,超临界CO体系中超声波空化产生的流体动力学应力和空化应力与超临界CO分子优异的扩散传质特性和渗透能力相结合,是成功从大块石墨中剥离PGQDs的关键因素。实验过程中,超声功率、超声时间、超临界CO压力对PGQDs的产率有明显影响,在超声功率1 KW、超声时间120分钟以及16 MPa的条件下,产率最高,为1.6%。本文采用的剪切及超声辅助超临界CO剥离制备PGQDs新方法不使用任何酸、碱及氧化剂,且制备方法过程简单,易于控制,有望扩大生产。

关键词：石墨烯量子点超临界CO2剥离剪切超声石墨

An Interpretable Artificial Intelligence Based Smart Agriculture System

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Computers, Materials & Continua 2022年第8期72卷 3777-3797页

作者： Fariza Sabrina Shaleeza Sohail farnaz Farid Sayka Jahan Farhad Ahamed Steven Gordon School of Engineering and Technology Central Queensland UniversitySydneyAustralia College of Engineering Science and EnvironmentThe University of NewcastleSydneyAustralia School of Social Sciences Western Sydney UniversitySydneyAustralia Department of Environmental Sciences Macquarie UniversitySydneyAustralia School of Computing Data and MathematicalSciencesWestern Sydney UniversitySydneyAustralia School of Engineering and Technology Central Queensland UniversityCairnsAustralia

With increasing world population the demand of food production has increased *** of Things(IoT)based smart agriculture system can play a vital role in optimising crop yield by managing crop requirements in *** can be an important factor to make such systems trusted and easily adopted by *** this paper,we propose a novel artificial intelligence-based agriculture system that uses IoT data to monitor the environment and alerts farmers to take the required actions for maintaining ideal conditions for crop *** strength of the proposed system is in its interpretability which makes it easy for farmers to understand,trust and use *** use of fuzzy logic makes the system customisable in terms of types/number of sensors,type of crop,and adaptable for any soil types and weather *** proposed system can identify anomalous data due to security breaches or hardware malfunction using machine learning *** ensure the viability of the system we have conducted thorough research related to agricultural factors such as soil type,soil moisture,soil temperature,plant life cycle,irrigation requirement and water application timing for Maize as our target *** experimental results show that our proposed system is interpretable,can detect anomalous data,and triggers actions accurately based on crop requirements.

关键词： Explainable artificial intelligence fuzzy logic internet of things machine learning sensors smart agriculture

A biotechnological perspective on the application of iron oxide nanoparticles

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Nano Research 2016年第8期9卷 2203-2225页

作者： farnaz Assa Hoda Jafarizadeh-Malmiri Hossein Ajamein Navideh Anarjan Hamideh Vaghari Zahra Sayyar Aydin Berenjian Faculty of Chemical Engineering Sahand University of Technology Tabriz *** Iran Department of Chemical Engineering Ilkhchi Branch Islamic Azad University Ilkhchi *** Iran Department of Chemical Engineering Tabriz Branch Islamic Azad University Tabriz *** Iran School of Engineering Faculty of Science and Engineering University of Waikato Hamilton 3240 New Zealand

In recent decades, magnetic iron nanoparticles （NPs） have attracted much attention due to properties such as superparamagnetism, high surface area, large surface-to-volume ratio, and easy separation under external magnetic fields. Therefore, magnetic iron oxides have potential for use in numerous applications, including magnetic resonance imaging contrast enhancement, tissue repair, immunoassay, detoxification of biological fluids, drug delivery, hyperthermia, and cell separation. This review provides an updated and integrated focus on the fabrication and characterization of suitable magnetic iron NPs for biotechnological applications. The possible perspective and some challenges in the further development of these NPs are also discussed.

关键词： iron oxide nanoparticle superparamagnetic biotechnology surface modification