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Solubility and thermodynamics of lamotrigine in ternary mixtures of ionic liquids([OMIm][Br]+[HMIm][Br]+water)at different temperatures

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Chinese Journal of Chemical Engineering 2020年第1期28卷 198-207页

作者： Mohammad Barzegar-Jalali abolghasem Jouyban Fleming Martinez Hemayat Shekaari Seyyedeh Narjes Mirheydari Research Center for Pharmaceutical Nanotechnology and Faculty of Pharmacy Tabriz University of Medical SciencesTabrizIran Pharmaceutical Analysis Research Center and Faculty of Pharmacy Tabriz University of Medical SciencesTabrizIran Kimia Idea Pardaz Azarbayjan(KIPA)Science-Based Company Tabriz University of Medical SciencesTabrizIran Grupo de Investigaciones Farmacéutico-Fisicoquímicas Departamento de FarmaciaFacultad de CienciasUniversidad Nacional de Colombia–Sede BogotáCra.30 No.45-03BogotáD.C.Colombia Department of Physical Chemistry Faculty of ChemistryUniversity of TabrizTabrizIran Drug Applied Research Center Tabriz University of Medical SciencesTabrizIran

Experimental mole fraction solubility of lamotrigine(LTG)in ternary aqueous mixtures of two ionic liquids(ILs),1-hexyl and 1-octyl-3-methylimidazolium bromide,[HMIm][Br]and[OMIm][Br]were reported at several temperatures T=(293.15 to 313.15)*** van’t Hoff and(Jouyban-Acree-van’t Hoff,E-Jouyban-Acree-van’t Hoff,e-NRTL,UNIQUAC and Wilson)models were used to correlate the solubility *** comparison of the models with temperature and solvent composition dependencies shows that the Wilson model has the minimum ARD which are relatively close to those obtained from Jouyban-Acree-van’t Hoff and E-Jouyban-Acree-van’t Hoff models and maximum ARD belonged to the UNIQUAC *** order of ARDs for these models is:Wilson b Jouyban-Acree-van’t Hoff,E-Jouyban-Acree-van’t Hoff b e-NRTL b ***,the apparent thermodynamic functions,Gibbs free energy,enthalpy and entropy of dissolution and mixing were calculated based on the van’t Hoff and Gibbs free energy *** strong LTG-ILs interactions and enthalpic contribution of the dissolution process resulted from the calculated thermodynamic functions.

关键词： Solubility Lamotrigine [OMIm][Br] [HMIm][Br] UNIQUAC Thermodynamic functions

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SO3H-Functionalized Ionic Liquids： Green, Efficient and Reusable Catalysts for the Facile Dehydration of Aldoximes into Nitriles

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Chinese Journal of Chemistry 2011年第5期29卷 978-982页

作者： Davoodnia abolghasem Khojastehnezhad Amir Bakavoli Mehdi Tavakoli-Hoseini Niloofar Department of Chemistry Faculty of Sciences Mashhad Branch Islamic Azad University Mashhad Iran

Easily synthesized aldoximes have been converted to the corresponding nitriles under very mild conditions by a simple reaction using two halogen-free SO3H-functionalized ionic liquids, 3-methyl-l-（4-sulfonic acid）butylimidazolium hydrogen sulfate [MIM（CH2）aSO3H][HSO4] and 1-（4-sulfonic acid）butylpyridinium hydrogen sulfate [PY（CH2）4SO3H][HSO4], as catalyst and reaction medium without any additional organic solvent. The method was equally effective for aromatic aldoximes bearing electron-donating and electron-withdrawing substituents. Taking into account environmental and economical consideration, the protocol presented here has the merits of environmentally friendly, simple operation, easy work-up and very good yields. The catalysts could be recycled and reused for several times without noticeably decreasing in their catalytic activities.

关键词： ionic liquid aldoxime nitrile dehydration

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An Efficient Approach for Historical Storage and Retrieval of Segmented Road Data in Geographic Information System for Transportation

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Chinese Geographical Science 2010年第3期20卷 236-242页

作者： Mohammad Reza Jelokhani-Niaraki Ali Asghar Alesheikh abolghasem Sadeghi-Niaraki Faculty of Geodesy and Geomatics Engineering K. N. Toosi University of TechnologyTehran Iran Department of Geoinformatics Engineering Inha UniversityIncheon South Korea

One of the most powerful functions of Geographic Information System for Transportation (GIS-T) is Dynamic Segmentation (DS), which is used to increase the efficiency and precision of road management by generating segments based on attributes. The road segments describing transportation data are both spatially and temporally referenced. For a variety of transportation applications, historical road segments must be preserved. This study presents an appropriate approach to preserve and retrieve the historical road segments efficiently. In the proposed method, only the portions of segments of a time stamp that have been changed into new segments rather than storing the entire segments for every old time stamp are recorded .The storage of these portions is based on the type of changes. A recursive algorithm is developed to retrieve all segments for every old time stamp. Experimental results using real data of Tehran City, Iran justify the strength of the proposed approach in many aspects. An important achievement of the results is that database volume for 2006, 2007 and 2008 within the Historical Line Event Table (HLET) is reduced by 70%, 80% and 78%, respectively. The proposed method has the potential to prevent from vast data redundancy and the unnecessary storage of entire segments for each time stamp. Since the present technique is performed on ordinary plain tables that are readable by all GIS software, special software platforms to manage the storage and retrieval of historical segments are not needed. In addition, this method simplifies spatio-temporal queries.

关键词： GIS-T dynamic segmentation change type recursive algorithm time stamp

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Synthesis of Pyrazolo[3,4-d]pyrimidin-4-ones Catalyzed by Brensted-acidic Ionic Liquids as Highly Efficient and Reusable Catalysts

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Chinese Journal of Chemistry 2011年第11期29卷 2421-2426页

作者： Tavakoli-Hoseini, Niloofar Moloudi, Raheleh Davoodnia, abolghasem Shaker, Mohammad Department of Chemistry Mashhad Branch Islamic Azad University Mashhad Iran

A convenient and efficient method for the synthesis of pyrazolo[3,4-d]pyrimidin-4-ones via heterocyclization reaction of 5-amino-lH-pyrazole-4-carboxamides with triethyl orthoesters using two BrCnsted-acidic ionic liquids, 3-methyl-l-（4-sulfonic acid）butylimidazolium hydrogen sulfate [MIM＋（CH2）4SO3H][ HSO4 ] or N-（4-sulfonic acid）butyl triethylammonium hydrogen sulfate [Et3N＋（CH2）4SO3H][ HSO4 ], as efficient homogeneous catalysts under solvent-free conditions is described.

关键词： homogeneous catalysis ionic liquids pyrazolo[3,4-d]pyrimidin-4-ones solvent-free condition triethyl orthoesters

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微波辅助溶胶-凝胶法合成MgO纳米粒子及其催化合成Hantzsch1,4-二氢吡啶性能(英文)

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催化学报 2012年第9期33卷 1502-1507页

作者： Hakimeh MIRZAEI abolghasem DAVOODNIA Department of Chemistry Mashhad BranchIslamic Azad University

A microwave-assisted sol-gel method was employed for the preparetion of nano-sized MgO particles using Mg(NO 3)2·6H2O as precursor and deionized water as *** sample calcined at 500℃ had a high specific surface area of 243.2m2/g and particles sizes from *** comparison,MgO nanoparticles were also synthesized without microwave irradiation.X-ray diffraction (XRD) characterization showed the formation of smaller particles after microwave *** structure and morphology of the MgO particles were analyzed by N2 adsorption-desorption,XRD,scanning electron microscopy,and transmission electron *** catalytic behavior was studied with the one-pot synthesis of Hantzsch1,4-dihydropyridines from the reaction of aromatic aldehydes,ethyl acetoacetate,and ammonium *** MgO nanoparticles have high catalytic activity and gave the desired products in good to high *** catalyst can be easily recovered by filtration and was used at least three times with only a slight reduction in its catalytic activity.

关键词： magnesium oxide microwave-assisted sol-gel method nanoparticle Hantzsch 1,4-dihydropyridine

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无溶剂条件下可重复使用的担载的酸性离子液体催化剂高效催化酮和芳香醛选择性Cross-Aldol缩合反应(英文)

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催化学报 2012年第12期33卷 1950-1957页

作者： abolghasem DAVOODNIA Ghazaleh YASSAGHI Department of Chemistry Mashhad BranchIslamic Azad University

A newly prepared catalyst consisting of acidic ionic liquid 1-(4-sulfonic acid)butylpyridinium hydrogen sulfate supported on silica was used to catalyze the cross-aldol condensation of ketones with aromatic aldehydes under solvent-free conditions. The highly active and selective catalyst gave good to excellent yields of the desired cross-aldol products without the occurrence of any self-condensation reactions. Reaction times were short, the procedure and work-up were simple, and no volatile or hazardous organic solvents were necessary. Moreover, the catalyst could be reused at least four times with only a slight reduction in activity.

关键词：化学燃烧原理催化

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Effects of salinity on egg and fecal pellet production, development and survival, adult sex ratio and total life span in the calanoid copepod, A cartia tonsa:a laboratory study

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Chinese Journal of Oceanology and Limnology 2016年第4期34卷 709-718页

作者： SHAYEGAN Majid ESMAEILI FEREIDOUNI abolghasem AGH Naser JANI KHALILI Khosrow MSc.Student Faculty of Animal Sciences and Fisheries Sari Agricultural Sciences and Natural Resources University (SANRU) Fisheries Department Faculty of Animal Sciences and Fisheries Sari Agricultural Sciences and Natural Resources University (SANRU) Artemia Reference Center Urmia University

The ef fects of salinity on the copepod, A cartia tonsa in terms of daily egg production rate(EPR), hatching success, fecal pellet production rate(FPR), naupliar development time and survival, sex ratio, and total life span were determined in laboratory conditions through three experiments. In experiment 1, EPR, hatching success, and FPR of individual females were monitored at salinities of 13, 20, 35 and 45 during short-periods(seven consecutive days). Results show EPR was aff ected by salinity with the highest outputs recorded at 20 and 35, respectively, which were considerably higher than those at 13 and 45. Mean FPR was also higher in 35 and 20. In experiment 2, the same parameters were evaluated over total life span of females(long-term study). The best EPR and FPR were observed in 35, which was statistically higher than at 13 and 20. In experiment 3, survival rates of early nauplii until adult stage were lowest at a salinity of 13. The development time increased with increasing of salinity. Female percentage clearly decreased with increasing salinity. Higher female percentages(56.7% and 52.2%, respectively) were signifi cantly observed at two salinities of 13 and 20 compared to that at 35(25%). Total longevity of females was not af fected by salinity increment. Based on our results, for mass culture we recommend that a salinity of 35 be adopted due to higher reproductive performances, better feeding, and faster development of A. tonsa.

关键词： Acartia tonsa salinity egg and fecal pellet production sex ratio life span Caspian Sea

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The Effect of Variable Stator on Performance of a Highly Loaded Tandem Axial Flow Compressor Stage

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Journal of Thermal Science 2016年第3期25卷 223-230页

作者： Hamzeh Eshraghi Masoud Boroomand abolghasem M.Tousi Mohammad Toude Fallah Ali Mohammadi Department of Aerospace Engineering and Centre of excellence on computational aerospace engineering Amirkabir University of Technology Nanotechnology Research and Application Center Sabanci University

Increasing the aerodynamic load on compressor blades helps to obtain a higher pressure ratio in lower rotational speeds. Considering the high aerodynamic load effects and structural concerns in the design process, it is possible to obtain higher pressure ratios compared to conventional compressors. However, it must be noted that imposing higher aerodynamic loads results in higher loss coemcients and deteriorates the overall performance. To avoid the loss increase, the boundary layer quality must be studied carefully over the blade suction surface. Employment of advanced shaped airfoils （like CDAs）, slotted blades or other boundary layer control methods has helped the de- signers to use higher aerodynamic loads on compressor blades. Tandem cascade is a passive boundary layer control method, which is based on using the flow momentum to control the boundary layer on the suction surface and also to avoid the probable separation caused by higher aerodynamic loads. In fact, the front pressure side flow momentum helps to compensate the positive pressure gradient over the aft blade＇s suction side. Also, in compari- son to the single blade stators, tandem variable stators have more degrees of freedom, and this issue increases the possibility of finding enhanced conditions in the compressor off-design performance. In the current study, a 3D design procedure for an axial flow tandem compressor stage has been applied to design a highly loaded stage. Following, this design is numerically investigated using a CFD code and the stage characteristic map is reported. Also, the effect of various stator stagger angles on the compressor performance and especially on the compressor surge margin has been discussed. To validate the CFD method, another known compressor stage is presented and its performance is numerically investigated and the results are compared with available experimental results.

关键词： Compressor Stage Highly Loaded Performance Characteristic Tandem Variable Stator

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Keplerate巨型纳米多孔聚氧钼酸盐作为可重复使用催化剂用于合成1,2,4,5-四取代咪唑(英文)

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催化学报 2014年第10期35卷 1761-1767页

作者： Ahmad Nakhaei abolghasem Davoodnia Department of Chemistry Mashhad Branch Islamic Azad University

The Keplerate‐type giant nanoporous isopolyoxomolybdate (NH4)42[MoVI72MoV60O372‐(CH3COO)30(H2O)72], denoted {Mo132}, has been used as a catalyst for the synthesis of1,2,4,5‐tetrasubstituted imidazoles by the one‐pot, four‐component thermal reaction of benzil with aromatic aldehydes, primary amines, and ammonium acetate under solvent‐free conditions. The catalyst was prepared according to a previously published literature procedure using inexpensive and readily available starting materials, and subsequently characterized by FT‐IR, UV and X‐ray diffraction spectroscopy, as well as microanalysis. The results showed that {Mo132} exhibited high catalytic activity towards the synthesis of 1,2,4,5‐tetrasubstituted imidazoles, with the desired products being formed in good to high yields. Furthermore, the catalyst was recyclable and could be reused at least three times without any discernible loss in its catalytic activity. Overall, this new catalytic method for the synthesis of 1,2,4,5‐tetrasubstituted imidazoles provides rapid access to the desired compounds following a simple work‐up procedure, and avoids the use of harmful organic solvents. This method therefore represents a significant improvement over the methods currently available for the synthesis of tetrasubstituted imidazoles.

关键词：取代咪唑合成方法可重复使用纳米多孔催化剂 e型应用催化活性

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Experimental and numerical investigation of design optimization of a partial admitted supersonic turbine

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Propulsion and Power Research 2013年第1期2卷 70-83页

作者： Reza Aghaei tog abolghasem M.Tousin Amirkabir University of Technology TehranPO.BOX 15875-4413Iran

To obtain a high specific work output,the large pressure ratios across the turbine are *** can be achieved using a supersonic *** the fluid mass flow is low,the impulse kind of one or two stages supersonic turbine is *** prevent losses due to low blade aspect ratio and issues related to manufacturing and industrial problems,the turbine is used in partial admission *** show that the turbine efficiency is highly dependent on the amount of partial admission *** turbine efficiency in full admission is high,but the use of partial admission lowers the additional ***,there will be a degree of partial admission in which the turbine will have the highest *** aim of this work is to achieve the optimum partial admission for a special impulse turbine as a case ***,in the beginning,an appropriate model of losses is ***,using a nonlinear design optimization code,the partial admission of an impulse supersonic turbine is *** code is written using a genetic ***,using three-dimensional numerical analysis,the optimal model will be *** the optimization problem,the turbine efficiency is the objective *** amount of design parameters and constraints used in this process are ten and eight,*** the optimization process,prototypes of designed and modified turbines are made and *** results were compared and *** results showed that the turbine efficiency is improved between 2.5%and 3%depending on various operation conditions.

关键词： Partial admission Non-linear optimization Genetic algorithm Three-dimensional(3D)numerical analysis Impulse turbine

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