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Synthesis and Crystal Structure of N-(2-(1,3,4-oxadiazol-2-yl)phenyl)-2,3-dimethylaniline

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Chinese Journal of Structural Chemistry 2014年第3期33卷 407-414页

作者： Ali Souldozi seyed hamid reza shojaei Ali Ramazani Katarzyna ?lepokura Tadeusz Lis Department of Chemistry Urmia Branch Islamic Azad University Department of Physics Urmia Branch Islamic Azad University Department of Chemistry Zanjan Branch Islamic Azad University Faculty of Chemistry University of Wroc?aw 14 Joliot-Curie St. 50-383 Wroc?aw Poland

The title compound, N-（2-（1,3,4-oxadiazol-2-yl）phenyl）-2,3-dimethylaniline, was synthesized and studied by single-crystal X-ray diffraction method. The structure of the product was confirmed by IR, ^1H- and ^13C-NMR spectroscopy, elemental analysis and mass spectrometry. These experimental studies were supported by theoretical optimizations.

关键词： single-crystal X-ray structure 1,3,4-oxadiazoles N-(2-(1,3,4-oxadiazol-2- yl)phenyl)-2,3-dimethylaniline (N-isocyanimino)triphenylphosphorane

Seismic progressive-failure analysis of tall steel structures under beam-removal scenarios

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Frontiers of Structural and Civil Engineering 2019年第4期13卷 904-917页

作者： Behrouz BEHNAM Fahimeh shojaei hamid reza RONAGH School of Civil and Environmental Engineering Amirkabir University of Technology Tehran 13496 Iran Independent Researcher Earthquake Engineer Parand 37611 Iran Centre for Infrastructure Engineering Western Sydney University NSW 2751 Australia

Investigating progressive collapse of tall structures under beam removal scenarios after earthquake is a complex subject because the earthquake damage acts as an initial condition for the subsequent scenario. An investigation is performed here on a 10 story steel moment resisting structure designed to meet the life safety level of performance when different beam removal scenarios after earthquake are considered. To this end, the structure is first subjected to the design earthquake simulated by Tabas earthquake acceleration. The beam removal scenarios are then considered at different locations assuming that both ends connections of the beam to columns are simultaneously detached from the columns;thus the removed beam falls on the underneath floor with an impact. This imposes considerable loads to the structure leading to a progressive collapse in all the scenarios considered. The results also show that the upper stories are much more vulnerable under such scenarios than the lower stories. Hence, more attention shall be paid to the beam-to-column connections of the upper stories during the process of design and construction.

关键词： progressive collapse tall steel moment-resisting frames non-linear dynamic analysis beam-removal scenario impact

Fault ride-through capability improvement in a DFIG-based wind turbine using modified ADRC

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Protection and Control of Modern Power Systems 2022年第1期7卷 751-787页

作者： seyed reza Mosayyebi seyed hamid Shahalami Hamed Mojallali Electrical Engineering Department Faculty of EngineeringUniversity of GuilanRashtIran

In this paper,an overview of several strategies for fault ride-through(FRT)capability improvement of a doubly-fed induction generator(DFIG)-based wind turbine is *** and parameter variations have adverse effects on the performance of these *** is desirable to use a control method that is robust to such *** disturbance rejection control(ADRC)is one of the most common methods for eliminating the effects of *** improve the performance of the conventional ADRC,a modified ADRC is introduced that is more robust to disturbances and offers better *** non-derivability of the fal function used in the conventional ADRC degrades its efficiency,so the modified ADRC uses alternative functions that are derivable at all points,i.e.,the odd trigonometric and hyperbolic functions(arcsinh,arctan,and tanh).To improve the effciency of the proposed ADRC,fuzzy logic and fractional-order functions are used *** fuzzy fractional-order ADRC(FFOADRC),all disturbances are evaluated using a nonlinear fractional-order extended state observer(NFESO).The performance of the suggested structure is investigated in MATLAB/*** simulation results show that during disturbances such as network voltage sag/swell,using the modified ADRCs leads to smaller fluctuations in stator flux amplitude and DC-link voltage,lower variations in DFIG velocity,and lower total harmonic distortion(THD)of the stator *** demonstrates the superiority over conventional ADRC and a proportional-integral(PI)***,by chang-ing the crowbar resistance and using the modified ADRCs,the peak values of the waveforms(torque and currents)can be controlled at the moment of fault occurrence with no significant distortion.

关键词： Doubly-fed induction generator(DFIG) Auto disturbance rejection control(ADRC) Fault ride-through(FRT) Wind turbine Nonlinear fractional-order extended state observer(NFESO)

FEM and ANN analyses of short and tall geosynthetic reinforced soil walls:Evaluation of various effective aspects and ASSHTO acceptable design methods

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Frontiers of Structural and Civil Engineering 2024年第10期18卷 1576-1594页

作者： hamid reza RAZEGHI Ali Akbar Heshmati RAFSANJANI seyed Meisam ALAVI School of Civil Engineering Iran University of Science and TechnologyTehran 13114-16846Iran

In addition to confined investigations on tall geosynthetic reinforced soil(GRS)walls,a remarkable database of such walls must be analyzed to diminish engineers’concerns regarding the American Association of State Highway and Transportation Officials(AASHTO)Simplified or Simplified Stiffness Method in *** are also uncertainties regarding reinforcement load distributions of GRS walls at the ***,the current study has implemented a combination of finite element method(FEM)and artificial neural network(ANN)to distinguish the performance of short and tall GRS walls and assess the AASHTO design methods based on 88 FEM and 10000 ANN *** were conspicuous differences between the effectiveness of stiffness(63%),vertical spacing(22%),and length of reinforcements(14%)in the behavior of short and tall walls,along with predictions of geogrid load *** differences illustrated that using the Simplified Method may exert profound repercussions because it does not consider wall ***,the Simplified Stiffness Method(which incorporates wall height)predicted the reinforcement load distributions at backfill and connections ***,a Multilayer Perceptron(MLP)algorithm with a low average overall relative error(up to 2.8%)was developed to propose upper and lower limits of reinforcement load distributions,either at backfill or connections,based on 990000 ANN predictions.

关键词： geosynthetics short and tall GRS walls artificial intelligence MLP AASHTO Simplified and Simplified Stiffness Methods

Comparison of dry reforming of methane in low temperature hybrid plasma-catalytic corona with thermal catalytic reactor over Ni/γ-Al_2O_3

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Journal of Natural Gas Chemistry 2012年第4期21卷 466-475页

作者： Amin Aziznia hamid reza Bozorgzadeh Naser seyed-Matin Morteza Baghalha Ali Mohamadalizadeh Department of Chemical & Petroleum Engineering Sharif University of TechnologyAzadi St.Tehran11365-9465Iran Plasma Research Laboratory Research Institute of Petroleum Industry(RIPI)14665-1998TehranIran Gas Research Division Research Institute of Petroleum Industry(RIPI)14665-1998TehranIran

In the current study, the hybrid effect of a corona discharge and γ-alumina supported Ni catalysts in CO2 reforming of methane is investigated. The study includes both purely catalytic operation in the temperature range of 923-1023 K, and hybrid catalytic-plasma operation of DC corona discharge reactor at room temperature and ambient pressure. The effect of feed flow rate, discharge power and Ni/γ-Al2O3 catalysts are studied. When CH4/CO2 ratio in the feed is 1/2, the syngas of low Ha/CO ratio at about 0.56 is obtained, which is a potential feedstock for synthesis of liquid hydrocarbons. Although Ni catalyst is only active above 573 K, presence of Ni catalysts in the cold corona plasma reactor （T≤523 K） shows promising increase in the conversions of methane and carbon dioxide. When Ni catalysts are used in the plasma reaction, H2/CO ratios in the products are slightly modified, selectivity to CO increases whereas fewer by-products such as hydrocarbons and oxygenates are formed.

关键词： dry reforming of methane synthesis gas hybrid catalyst plasma Ni/γ-Al2O3 discharge power

Functionalized Graphene Oxide with Bismuth and Titanium Oxide Nanoparticles for Efficiently Removing Formaldehyde from the Air by Photocatalytic Degradation-Adsorption Process

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Journal of Analysis and Testing 2023年第4期7卷 444-458页

作者： Mohsen Mohammadi Asl hamid Shirkhanloo Nabiollah Mansouri seyed Ali reza Haji seyed Mirzahosseini Farideh Atabi Department of Environmental Engineering Faculty of Natural Resource and EnvironmentScience and Research BranchIslamic Azad UniversityTehran 14778-93855Iran Research Institute of Petroleum Industry(RIPI) West BoulevardOlympic VillageTehran 14857-33111Iran

Formaldehyde(HCHO)is formed through the oxidation of volatile organic compounds(VOCs)and can cause human *** oxide and titanium oxide nanoparticles-functionalized nanographene oxide(Bi_(2)O_(3)/TiO_(2)@NGO)were used to rapidly remove the HCHO from the air by a photocatalytic degradation-adsorption process(PC-DAP).The formaldehyde vapor in pure air was generated in a dynamic system within a chamber,and flowed over Bi_(2)O_(3)/TiO_(2)@NGO adsorbent inside a fixed-bed quartz reactor(FBQR)under UV irradiation at optimized conditions(250C).At atmospheric pressure,the flow rate and gas hourly space velocity(GHSV)were adjusted to 300 mL/min and 100-450 L/h,*** radicals of HCHO and nanographene oxide(NGO)were generated through the UV-photochemical process,enhancing the chemical adsorption through the radicals’*** the other hand,the semi-degradation process by catalytic oxidation process converted some HCHO into raw materials of CO_(2)and H_(2)O,while the unconverted HCHO was physically absorbed by ***,the HCHO concentration in the outlet system was measured by gas chromatography with a flame ionization detector(GC-FID)after derivatizing formaldehyde with 2,4-dinitrophenylhydrazine(DNPH)and ***,efficient removal of HCHO from the air,the removal efficiency of more than 95%,was achieved through physical/chemical adsorption and the *** mean removal efficiencies for HCHO with Bi_(2)O_(3)-TiO_(2)@NGO,TiO_(2)@NGO,Bi_(2)O_(3)@NGO,and NGO were 98.7%,73.6%,61.8%,and 11.4%,respectively(n=10,RSD<5%).The methodology was validated by spiking different concentrations of standard HCHO into pure air.

关键词： Formaldehyde removal Air Functionalized graphene oxide UV radiation Photocatalytic degradation-adsorption process

Characterization and corrosion behavior of Al-Co-rare earth(Ce-La)amorphous alloy

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Journal of Rare Earths 2023年第5期41卷 771-779,I0006页

作者： seyed Ali Mousavi Sayed hamid Hashemi Ali Ashrafi reza Shoja Razavi Seyyed Mehdi Ghazi Mirsaeed Faculty of Materials and Manufacturing Technologies Malek Ashtar University of TechnologyTehran167885611Iran Department of Materials Engineering Malek Ashtar University of TechnologyIsfahanShahin-shahrIran Department of Materials Engineering Isfahan University of TechnologyIsfahan***Iran

A new Al-based amorphous alloy with excellent corrosion resistance and high thermal stability was produced in the Al-Co-RE(Ce-La)*** this regard,two different amorphous-nanocrystalline ribbons:Al_(87.6)-Co_(6.4)-Ce_(3.8-)La_(2.2)(M_(1))and Al_(82.3)-Co_(10.1)-Ce_(4.8)-La_(2.8)(M_(2))were prepared using melt *** results reveal the supercooled liquid region(ATx)of 218℃which shows that the M2alloy has higher thermal stability in comparison to the *** M2ribbons present the superior corrosion resistance because of the formation of amorphous *** icorr,Ecorr,Epit,and Epit-Ecorrvalues of fully amorphous Al-Co-Ce-La metallic ribbons have a better trend of anti-corrosion performance compared to other crystalline and amorphous aluminum alloys.

关键词： Amorphous alloys Melt-spinning Rare earth metal Corrosion behavior

Finite element analysis of the dynamic behavior of pear under impact loading

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Information Processing in Agriculture 2017年第1期4卷 64-77页

作者： Alireza Salarikia seyed-Hassan Miraei Ashtiani Mahmood reza Golzarian hamid Mohammadinezhad Department of Biosystems Engineering Faculty of AgricultureFerdowsi University of MashhadMashhadIran

Pear fruit is susceptible to bruising from mechanical impact during field harvesting operations and at all stages of postharvest *** postharvest shelf life of bruised fruits were shorter,and they softened rapidly under cold storage compared with non-bruised *** strategies for reducing bruising during the supply chain requires an understanding of fruit dynamic behavior to different enforced *** Element Method(FEM)is among the best techniques,in terms of accuracy and cost-efficiency,for studying the factors effective in impact-induced *** this research,the drop test of pear sample was simulated using *** simulation was conducted on a 3D solid model of the pear that was created by using non-contact optical scanning *** computer-based study aimed to assess the stress and strain distribution patterns within pear generated by collision of the fruit with a flat surface made of different *** contact force between two colliding surfaces is also *** simulations were conducted at two different drop orientations and four different impact *** showed that,in both drop orientations,the largest and smallest stresses,strains and contact forces were developed in collision with the steel and rubber surfaces,*** general,these parameters were smaller when fruit collided with the surfaces along its horizontal axis than when collided along its vertical ***,analyses of stress and strain magnitudes showed that simulation stress and strain values were compatible with experiments data.

关键词： Bruising Dropping impact FEM Contact force Stress–strain distribution Reverse engineering

Experimental investigation of wettability alteration on residual oil saturation using nonionic surfactants: Capillary pressure measurement

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Petroleum 2015年第4期1卷 289-299页

作者： Masoud Amirpour seyed reza Shadizadeh hamid Esfandyari Saeid Ahmadi Department of Petroleum Engineering Abadan Faculty of Petroleum EngineeringPetroleum University of TechnologyAbadanIran Department of Petroleum Engineering Tehran UniversityTehranIran

Introducing the novel technique for enhancing oil recovery from available petroleum reservoirs is one of the important issues in future energy *** of all operative factors,wettability may be the foremost parameter affecting residual oil saturation in all stage of oil *** wettability alteration is one of the methods which enhance oil recovery from the petroleum ***,the studies which focused on this subject were more than the past and many contributions have been made on this *** main objective of the current study is experimentally investigation of the two nonionic surfactants effects on altering wettability of reservoir *** of this work is to change the wettability to preferentially the water-wet *** reducing the residual oil saturation(Sor)is the other purpose of this *** wettability alteration of reservoir rock is measured by two main quantitative methods namely contact angle and the USBM *** of this study showed that surfactant flooding is more effective in oil-wet rocks to change their wettability and consequently reducing Sor to a low ***(Zizyphus Spina Christi)is low priced,absolutely natural,and abundantly accessible in the Middle East and Central *** on the results,this material can be used as a chemical surfactant in field for enhancing oil recovery.

关键词： Wettability alteration Residual oil saturation Nonionic surfactant USBM method Contact angle