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ORGANOSOLUBLE,THERMALLY STABLE POLYAMIDES CONTAINING SULFONE AND SULFIDE UNITS

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Chinese Journal of Polymer Science 2009年第6期27卷 781-787页

作者： Shahram mehdipour-Ataei mehdi hatami Mohammad Hossein Mosslemin Iran Polymer and Petrochemical Institute Department of Chemistry Isfahan University of Technology Department of Chemistry Islamic Azad University

A new diamine containing sulfone,sulfide and amide groups was synthesized via a three-step reaction process. The nucleophilic substitution reaction of 4-aminothiophenol with 4-nitrobenzoyl chloride in the presence of propylene oxide (PO) afforded N-(4-mercaptophenyl)-4-nitrobenzamide(MPNB).The catalytic reduction of the nitro group in MPNB to amino group was accomplished by using Pd/C and hydrazine monohydrate to produce 4-amino-N-(4-mercapto phenyl)benzamide(AMPB).Reaction of two moles of AMPB with bis(4-c...

关键词： Polymerizations Polycondensation Nucleophilic substitution Polyamides Thermal properties

Synthesis and characterization of novel dopamine-derivative:Application of modified multi-wall carbon nanotubes paste electrode for electrochemical investigation

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Chinese Chemical Letters 2011年第2期22卷 185-188页

作者： Shadpour Mallakpour mehdi hatami Ali A.Ensafi Hassan Karimi-Maleh Organic Polymer Chemistry Research Laboratory Department of ChemistryIsfahan University of TechnologyIsfahan 84156-83111Islamic Republic of Iran

Novel dopamine-derivative compound,3,5-diamino-N-（3,4-dihydroxyphenethyl）benzamide（3,5-DAB）was prepared in two *** the first step dopamine hydrochloride was reacted with 3,5-dinitrobenzoyl chloride in the presence of propylene *** the second step reduction of nitro groups resulted in preparation of 3,5-DAB in quantitative *** material was characterized using conventional spectroscopic methods such as FT-IR and ~1H *** addition,the redox response of a modified carbon nanotubes paste electrode of 3,5-DAB was investigated in aqueous solution at a neutral *** result showed that the electrode process has a quasi-reversible response,withΔE_p,greater than the（59/n） mV expected for a reversible ***,the diffusion coefficient for redox process in paraffin oil matrix obtained using chronoamperometry methods.

关键词： 3,5-Diamino-N-(3,4-dihydroxyphenethyl)benzamide Synthesis Electrochemical investigation Cyclic voltammetry Multi-wall carbon nanotubes paste electrode

二氧化锡纳米粒子催化四组分Hantzsch缩合合成多氢喹啉衍生物(英文)

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催化学报 2013年第4期34卷 758-763页

作者： Seyed Mohammad VAHDAT Fereshteh CHEKIN mehdi hatami Maryam KHAVARPOUR Saeed BAGHERY Ziba ROSHAN‐KOUHI Department of Chemistry Science and Research Ayatollah Amoli Branch Islamic Azad University Marine Science Research Institute Khoramshar University of Marine Science and Technology Chemical Engineering Department Islamic Azad University Ayatollah Amoli Branch Department of Chemistry College of Science Bu‐Ali Sina University Young Researchers Club Science and Research Ayatollah Amoli Branch Islamic Azad University

Tin dioxide (SnO2 ) nanoparticles efficiently catalyzed unsymmetrical four-component Hantzsch condensations of various aldehydes, dimedone, ethyl acetoacetate, and ammonium acetate to form polyhydroquinoline derivatives in excellent yields. This novel method offers several advantages over the traditional method of synthesizing these compounds, including safety, mild conditions, short reaction times, high yields, and an easy workup.

关键词： Nano tin dioxide catalyst Hantzsch condensation Polyhydroquinoline 1 4‐Dihydropyridine

Protective effects of cyclosporine and its analog NIM-811 in a murine model of hepatic ischemia-reperfusion injury

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Liver Research 2024年第1期8卷 46-53页

作者： Joshua Hefler Rena Pawlick Braulio A.Marfil-Garza Aducio Thiesen Nerea Cuesta-Gomez Sanaz hatami Darren H.Freed Constantine Karvellas David L.Bigam A.M.James Shapiro Department of Surgery Faculty of Medicine&DentistryUniversity of AlbertaEdmontonABCanada Department of Medicine Faculty of Medicine&DentistryUniversity of AlbertaEdmontonABCanada CHRISTUS-LatAm Hub Excellence&Innovation Center MonterreyMexico Alberta Diabetes Institute University of AlbertaEdmontonABCanada Clinical Islet Transplant Program University of AlbertaEdmontonABCanada Department of Laboratory Medicine&Pathology Faculty of Medicine&DentistryUniversity of AlbertaEdmontonABCanada

Background and aim:The liver is susceptible to ischemia-reperfusion injury(IRI)during hepatic surgery,when the vessels are compressed to control bleeding,or liver transplantation,when there is an obligate period of *** hallmark of IRI comprises mitochondrial dysfunction,which generates reactive oxygen species,and cell death through necrosis or ***(CsA),which is a well-known immunosuppressive agent that inhibits calcineurin,has the additional effect of inhibiting the mito-chondrial permeability transition pore(mPTP),thereby,preventing mitochondrial swelling and ***-811,which is the nonimmunosuppressive analog of CsA,has a similar effect on the *** this study,we tested the effect of both agents on mitigating warm hepatic IRI in a murine *** and methods:Before ischemic insult,the mice were administered with intraperitoneal normal saline(control);CsA at 2.5,10,or 25 mg/kg;or NIM-811 at 10 mg/***,the mice were subjected to partial warm hepatic ischemia by selective pedicle clamping for 60 min,followed by 6 h of recovery after *** alanine transaminase(ALT)was measured,and the liver tissue was examined histologically for the presence of apoptosis and the levels of inflammatory ***:Compared with the control mice,the mice treated with 10 and 25 mg/kg of CsA and NIM-811 had significantly lower ALT levels(P<0.001,0.007,and 0.031,respectively).Moreover,the liver tissue showed reduced histological injury scores after treatment with CsA at 2.5,10,and 25 mg/kg and NIM-811(P=0.041,<0.001,0.003,and 0.043,respectively)and significant decrease in apoptosis after treatment with CsA at all doses(P=0.012,0.007,and<0.001,respectively).Levels of the pro-inflammatory cyto-kines,particularly interleukin(IL)-1β,IL-2,IL-4,IL-10,and keratinocyte chemoattractant/human growth-regulated oncogene significantly decreased in the mice treated with the highest dose of CsA(25 mg/kg)than those in the control ***

关键词： Cyclosporine(CsA) Cyclosporine analogue Liver surgery Ischemia-reperfusion injury(IRI) Animal model NIM-811

Effects of different gases on the performance of foams stabilized by Cocamidopropyl betaine surfactant and silica nanoparticles:A comparative experimental study

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Petroleum 2022年第4期8卷 546-551页

作者： Masoud hatami Alooghareh Atefeh Kabipour Mohamadhosein ghazavi Seyyed Mohammad Mousavi Sisakht mehdi Razavifar Department of Chemical Engineering Faculty of EngineeringShahid Chamran University of AhvazAhvazIran Islamic Azad University Khark BranchKhark IslandBoushehrIran Lamerd Higher Education Center Petroleum Engineering DepartmentLamerdFarsIran Department of Petroleum Engineering School of Chemical and Petroleum EngineeringShiraz UniversityShirazIran

Application of CO_(2)gas in foam enhanced oil recovery(EOR)processes has emerged as a win-win strategy for achieving higher oil recovery factor and reducing greenhouse gas emission,which can significantly help the protection of the ozone layer from ***,lower stability of CO_(2)-foam,as compared to the N_(2)-and CH_(4)^(-)foams,has tempted us to examine combinations of CO_(2)with these gases to not only improve the stability of the produced foam but also have CO_(2)as the gaseous phase of the *** this study,we investigated the effect of different gases and the mixture thereof on the performance of foams in EOR while the aqueous phase of foams is a constant mixture of Cocamidopropyl betaine surfactant(0.03 wt%)and silica nanoparticle(0.1 wt%).To this end,seven different gases,including N_(2),CO_(2),CH4,80%N_(2)^(+)20%CO_(2),80%CH_(4)^(+)20%CO_(2),50%CH_(4)^(+)50%CO_(2),50%N_(2)^(+)50%CO_(2)were used as the gases phase for foam generation and the performance of the produced foams were examined through the following experiments:bulk foam stability tests,apparent foam viscosity measurements and core flooding *** results of foam stability tests showed that half-life time for the CO_(2)-,CH_(4)^(-)and N_(2)-foams are 13.5,17.0 and 44.0 min,***,as revealed from apparent viscosity measurements,the N_(2)-and 80%N_(2)^(+)20%CO_(2)foams have higher apparent foam viscosity values followed by 50%N_(2)^(+)50%CO_(2)***,we showed that a combination of 80%N_(2)^(+)20%CO_(2)as the gaseous phase for foam generation could not only improve CO_(2)-foam stability,as compared to other foams,but also can substantially increase ultimate oil recovery(56.6%OOIP),even more than that for N_(2) foam(48.6%OOIP),obtained from core flooding experiments.

关键词： Foam Carbon dioxide Nitrogen Methane Silica nanoparticles Surfactant Mobility ratio

Effect of fiber angle on LYP steel shear walls behavior

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Journal of Central South University 2014年第2期21卷 768-774页

作者： Farzad hatami Ali Ghamari Farshad hatami Structure and Earthquake Center Amirkabir University of Technology Researcher of Civil Engineering Azad UniversityDareshahr Branch Civil Engineering Department Amirkabir University of Technology

Steel shear wall(SSW) was properly determined using numerical and experimental *** properties of SSW and LYP(low yield point) steel shear wall(LSSW) were *** is revealed that LSSW exhibits higher properties compared to SSW in both elastic and inelastic *** is also concluded that the addition of CFRP(carbon fiber reinforced polymers) enhances the seismic parameters of LSSW(stiffness,energy absorption,shear capacity,over strength values).Also,stress values applied to boundary frames are lower due to post buckling *** effect of fiber angle was also studied and presented as a mathematical equation.

关键词： carbon fiber reinforced polymers fiber angle low yield point steel shear wall post buckling composite

The Properties of the Space-Charge and Net Current Density in Magnetized Plasmas

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Plasma Science and Technology 2013年第12期15卷 1169-1173页

作者： M.M.hatami Physics Department of K N Toosi University of Technology

A hydrodynamic model is used to investigate the properties of positive space-charge and net current density in the sheath region of magnetized, collisional plasmas with warm positive ions. It is shown that an increase in the ion-neutral collision frequency, as well as the magnitude of the external magnetic field, leads to an increase in the net current density across the sheath region. The results also show that the accumulation of positive ions in the sheath region increases by increasing the ion-neutral collision frequency and the magnitude of the magnetic field. In addition, it is seen that an increase in the positive ion temperatures causes a decrease in the accumulation of positive ions and the net current density in the sheath region.

关键词： hydrodynamic model magnetized plasma sheath sheath formation criterion

Progressive collapse resisting capacity of reinforced concrete load bearing wall structures

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Journal of Central South University 2015年第7期22卷 2730-2738页

作者： Alireza Rahai Alireza Shahin Farzad hatami Department of Civil Engineering Amirkabir University of Technology (Tehran Polytechnic) No.424 Structural & Earthquake Research Center (SERC) Amirkabir University of Technology No.424

Reinforced concrete(RC) load bearing wall is widely used in high-rise and mid-rise buildings. Due to the number of walls in plan and reduction in lateral force portion, this system is not only stronger against earthquakes, but also more economical. The effect of progressive collapse caused by removal of load bearing elements, in various positions in plan and stories of the RC load bearing wall system was evaluated by nonlinear dynamic and static analyses. For this purpose, three-dimensional model of 10-story structure was selected. The analysis results indicated stability, strength and stiffness of the RC load-bearing wall system against progressive collapse. It was observed that the most critical condition for removal of load bearing walls was the instantaneous removal of the surrounding walls located at the corners of the building where the sections of the load bearing elements were changed. In this case, the maximum vertical displacement was limited to 6.3 mm and the structure failed after applying the load of 10 times the axial load bored by removed elements. Comparison between the results of the nonlinear dynamic and static analyses demonstrated that the "load factor" parameter was a reasonable criterion to evaluate the progressive collapse potential of the structure.

关键词： reinforced concrete(RC) load bearing wall structure progressive collapse fiber sections nonlinear analysis load factor method

Improvement in the protective performance and adhesion of polypyrrole coating on AZ31 Mg alloys

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Progress in Natural Science:Materials International 2015年第5期25卷 478-485页

作者： Maryam hatami Mohsen Saremi Reza Naderi School of Metallurgy and Materials Engineering Faculty of Engineering University of Tehran

The electrochemical synthesis of polypyrrole(Ppy) coating on AZ31 magnesium alloy was successfully achieved in a solution containing sodium salicylate and monomer of pyrrole through cyclic voltammetry *** effect of potential range,passivation pretreatment and number of cycles of polymerization on the quality and protective performance of the coatings was evaluated using surface analysis and electrochemical *** taking the advantage of charge transfer resistance,current density,corrosion potential,optical microscopy images and SEM micrographs,the optimum condition of synthesis of a Ppy coating with the best adhesion and corrosion protection was *** optimal PPy coating synthesized over AZ31 increases the polarization resistance and decreases the corrosion current more than one order of magnitude and shift the corrosion potential about 200 mV toward nobler *** SEM studies showed that Ppy coating have cauliflower morphology of Ppy grains with a diameter ranging from 20 nm to 60 nm.

关键词： PolyPyrrole AZ31 Mg Cyclic voltammetry Electropolymerization Corrosion protection