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Journal of Materials Science & Technology 2021年第26期85卷 30-43页

作者： Di Wan Yan Ma Binhan Sun Seyed mohammad javad Razavi Dong Wang Xu Lu Wenwen Song Department of Mechanical and Industrial Engineering Norwegian University of Science and TechnologyRichard Birkelands vei 2B7491TrondheimNorway Steel Institute(IEHK) RWTH Aachen UniversityIntzestraße 152072AachenGermany Max-Planck-Institut für Eisenforschung GmbH Max-Planck-Straße 140237DüsseldorfGermany

Fatigue crack growth(FCG)tests were conducted on a medium-Mn steel annealed at two intercritical annealing temperatures,resulting in different austenite(γ)to fe rrite(α)phase fractions and differentγ(meta-)*** in-situ hydrogen plasma charging was combined with in-situ cyclic loading in an environmental scanning electron microscope(ESEM).The in-situ hydrogen plasma cha rging increased the fatigue crack growth rate(FCGR)by up to two times in comparison with the reference tests in *** investigations showed a brittle-like crack growth or boundary cracking manner in the hydrogen environment while a ductile transgranular manner in *** both materials,the plastic deformation zone showed a reduced size along the hydrogen-influenced fracture path in comparison with that in *** difference in the hydrogen-assisted FCG of the medium-Mn steel with different microstructures was explained in terms of phase fraction,phase stability,yielding strength and hydrogen *** refined study can help to understand the FCG mechanism without or with hydrogen under in-situ hydrogen charging conditions and can provide some insights from the applications point of view.

关键词： Hydrogen embrittlement Fatigue crack growth(FCG) Electron channeling contrast imaging(ECCI) Medium-Mn steel Hydrogen plasma

Developing a K-value equation for predict dew point pressure of gas condensate reservoirs at high pressure

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Petroleum 2018年第4期4卷 437-443页

作者： Seyedfoad Aghamiri Mohsen Tamtaji mohammad javad Ghafoori Chemical Engineering Department Faculty of EngineeringUniversity of IsfahanIsfahan81744Iran

This paper proposed a new empirical K-value equation is developed to calculate dew pressure for gas condensate *** equation is applicable in the wide ranges of composition,temperature,and pressure by considering the effect of composition via two equations for normal boiling point and critical temperature of the *** range of dew pressure,temperature,heptane plus mole fraction,methane mole fraction,N2 mole fraction,CO2 mole fraction,and H2S mole fraction are fallen into 2666.7e9655 Psia,40e350.87F,0.0021e0.213,0.3344e0.9668,0e0.4322,0e0.0864,and 0e0.942 *** an important point,the proposed equation has any adjustable parameters,in addition,this equation indicates that in order to predict of dew pressure of gas condensate reservoirs,trial and error was not needed and therefore,computational speed increases beyond the ***,the accuracy is validated by comparing against the experimental data of 81 gas condensate reservoirs samples from published literature and the results of Wilson,Whitson,and Ghafoori *** to the experimental data,the absolute average deviations of dew pressure calculations for the proposed equation,Wilson,Whitson,and Ghafoori were 7.6%,97.6%,99.4%,and 94.9%respectively.

关键词： Dew point pressure Gas condensate reservoirs K-value Wilson

H pylori infection and reflux oesophagitis: A case-control study

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World Journal of Gastroenterology 2006年第35期12卷 5658-5662页

作者： Rahim Masjedizadeh Eskandar Hajiani Koorosh MoezArdalan Saeed Samie mohammad-javad Ehsani-Ardakani Ali Daneshmand mohammad-Reza Zali Division of Gastroenterology and Hepatology Department of Interna Medicine Ahwaz Jundishapur University of Medical Sciences Ahwaz Iran The National Research Department of Foodborne Diseases(NRDFD) The Research Center of Gastroenterology and LiverDiseases (RCGLD) Shaheed Beheshti University of MedicaSciences Iran

AIM： To examine the relationship between Hpylori and gastro-oesophageal reflux disease （GORD） in Iran. METHODS： In this study 51 GORD patients （referred to endoscopy at Taleghani hospital） were compared with 49 age-sex matched controls. Diagnosis of H pylori was made by gastric mucosal biopsy and rapid urease test （positive if the result of one or both diagnostic methods was positive）. Updated Sydney system was used to report histopathological changes. RESULTS： The frequency of H pylori infection based on rapid urease test and histology was 88.2% （45） in patients and 77.6% （38） in controls, which showed no significant difference. The frequency of H pylori infection was significantly higher in the antrum than in the corpus and cardia. The mean activity, inflammation, and gastritis scores were also higher in the antrum of patients than in the antrum of controls. The mean scores were significantly higher in the corpus of controls than in the corpus of patients. Diffuse active gastritis was observed in a significantly larger number of controls, while the frequency of diffuse chronic gastritis was higher in patients. There in the frequency of other patients and controls. was no significant difference histological findings ***： H pylori infection cannot prevent GORD in this region.

关键词： H pylori Gastro-oesophageal reflux diseases Reflux oesophagitis

The new soliton solutions for long and short-wave interaction system

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Journal of Ocean Engineering and Science 2022年第5期7卷 485-491页

作者： Sayyed Masood Zekavatmand Hadi Rezazadeh Mustafa Inc javad Vahidi mohammad Bagher Ghaemi Department of Applied Mathematics Iran University of Science and TechnologyTehranIran Faculty of Engineering Technology Amol University of Special Modern TechnologiesAmolIran Department of Computer Engineering Biruni UniversityIstanbulTurkey Firat University Science FacultyDepartment of MathematicsElazig 23119 Turkey Department of Medical Research China Medical University HospitalChina Medical UniversityTaichungTaiwan Department of Mathematical Sciences University of South AfricaPretoria 0002South Africa

The goal of this paper is to discover modern soliton solutions to long and short-wave interaction system by procedures called extended rational sine-cosine and rational sinh-cosh *** assume that the equation has a hypothetical soliton *** reorganizing the resulting equations,we obtain a system of *** Maple software,we get unknown coefficients in the system and writing them in the original equation,we obtain new solition solutions of the *** results show that the soliton solutions generated by the method for the long and short-wave interaction system are bright,kink type,bright periodic and dark *** provided 3-D figures to illustrate the *** results indicate that the method employed in this paper is superior than some other methods used in the literature to solve the same system equations.

关键词： Extended rational sine-cosine method Extended rational sinh-cosh method

Ocular higher-order aberrations and mesopic pupil size in individuals screened for refractive surgery

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International Journal of Ophthalmology(English edition) 2012年第2期5卷 222-225页

作者： Seyed javad Hashemian mohammad Soleimani Alireza Foroutan Mahmood Joshaghani mohammad Jafar Ghaempanah mohammad Ebrahim Jafari Mehdi Yaseri Eye Research center Rasoul Akram Hospital Tehran University of Medical Sciences Tehran Iran Department of Epidemiology and Biostatistics School of Public Health Tehran University of Medical Sciences Tehran Iran

AIM: To study the distribution of ocular higher-order aberrations(HOAs) and mesopic pupil size in individuals screened for refractive surgery. · METHODS: Ocular HOAs and mesopic pupil size were studied in 2 458 eyes of 1 240 patients with myopia, myopic astigmatism and compound myopic astigmatism and 215 eyes of 110 patients with hyperopia, hyperopic astigmatism and compound hyperopic astigmatism using the Zywave aberrometer (Busch& Lomb). All patients had correctable refractive errors without a history of refractive surgery or underlying diseases. Root-mean-square values of HOAs, total spherical aberration, total coma and mesopic pupil size were analyzed. Ocular HOAs were measured across a ≥ 6.0 mm pupil, and pupil size measurements were performed under the mesopic condition. · RESULTS: The mean values of HOAs, total spherical aberration and total coma in the myopic group were 0.369 μm, ±0.233, 0.133±0.112μm and 0.330±0.188μm, respectively. In the hyperopic group the mean values of HOAs, total spherical aberration and total coma were 0.418μm±0.214, 0.202±0.209μm and 0.343±0.201μm, respectively. Hyperopes showed greater total HOAs (P <0.01) and total spherical aberration (P <0.01) compared to myopes. In age-matched analysis, only the amount of total spherical aberration was higher in the hyperopic group (P =0.05). Mesopic pupil size in the myopic group was larger (P ≤0.05). · CONCLUSION: The results suggested that significant levels of HOAs were found in both groups which are important for planning refractive surgeries on Iranians. There were significantly higher levels of total spherical aberration in hyperopes compared to myopes. Mesopic pupil size was larger in myopic group.

关键词： corneal wavefront aberration pupil mesopic vision race myopia hyperopia

Effects of Eriobotrya japonica(Lindl.) flower extracts on mercuric chloride-induced hepatotoxicity in rats

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Chinese Science Bulletin 2012年第30期57卷 3891-3897页

作者： ESMAEILI Amir Hossein KHAVARI-NEJAD Ramazan Ali HAJIZADEH MOGHADDAM Akbar CHAICHI mohammad javad EBRAHIMZADEH mohammad Ali Department of Biology Science and Research BranchIslamic Azad UniversityBox 14515-775TehranIran Faculty of Basic Science University of MazandaranBox 47416-95448BabolsarIran Faculty of Chemistry University of MazandaranBox 47416-95447BabolsarIran Pharmaceutical Sciences Research Center School of PharmacyMazandaran University of Medical SciencesSari 48189Iran

Mercury(II) is an important factor in hepatotoxicity that can enter the body through marine diets and *** the present study,the protective effect of the Eriobotrya japonica flower extract(EJFE) on HgCl 2-induced hepatotoxicity was *** mg/kg of mercuric chloride in drinking water was given to rats either with saline or EJFE(100 and 200 mg/kg as intraperitoneal(IP)) for 30 *** mercury levels in different groups of liver tissues of the rats were measured with flameless atomic absorption spectroscopy(F-AAS).Also,mercury accumulation in the liver of the rats was modeled by using a parallel chemical kinetic *** results showed that HgCl 2-induced oxidative damage led to a significant decrease in glutathione(GSH) and the total antioxidant capacity(TAC) levels,and to a significant increase in lipid peroxidation *** mercury was 14.47% more in the livers of the stress groups than in those of the control groups(P<0.001),whereas the amount of Hg was adjusted to 13.49% and 13.93% in groups treated with 100 and 200 mg/kg of EJFE respectively,as compared with stress groups(P<0.001).HPLC analysis of EJFE revealed that hesperetin and gallic acid are the major antioxidants in *** demonstrate that flowers of the Eriobotrya japonica cause a significant protection against HgCl 2 induced hepatotoxicity in all diagnostic parameters by strengthening the antioxidant defense mechanisms and they may have a therapeutic function in free radical mediated diseases.

关键词：氯化汞大鼠肝提取物枇杷诱导火焰原子吸收光谱法总抗氧化能力化学动力学模型

Warpage and Shrinkage Optimization of Injection-Molded Plastic Spoon Parts for Biodegradable Polymers Using Taguchi, ANOVA and Artificial Neural Network Methods

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Journal of Materials Science & Technology 2016年第8期32卷 710-720页

作者： Erfan Oliaei Behzad Shiroud Heidari Seyed mohammad Davachi Mozhgan Bahrami Saeed Davoodi Iman Hejazi javad Seyfi Applied Science Nano Research Group ASNARKA P.C. *** Tehran Iran Macromolecular Science and Engineering University of Michigan Ann Arbor Michigan 48109-2136. United States Department of Chemical Engineering Shahrood Branch Islamic Azad University RO. Box 36155-163 Shahrood lran

In this study, it is attempted to give an insight into the injection processability of three self-prepared polymers from A to Z. This work presents material analysis, injection molding simulation, design of ex- periments alongside considering all interaction effects of controlling parameters carefully for green biodegradable polymeric systems, including polylactic acid （PLA）, polylactic acid-thermoplastic poly- urethane （PLA-TPU） and polylactic acid-thermoplastic starch （PLA-TPS）. The experiments were carried out using injection molding simulation software Autodesk Moldflov~~ in order to minimize warpage and volumetric shrinkage for each of the mentioned systems. The analysis was conducted by changing five significant processing parameters, including coolant temperature, packing time, packing pressure, mold temperature and melt temperature. Taguchi＇s [.27 （35） orthogonal array was selected as an efficient method for design of simulations in order to consider the interaction effects of the parameters and reduce spu- rious simulations. Meanwhile, artificial neural network （ANN） was also used for pattern recognition and optimization through modifying the processing conditions. The Taguchi coupled analysis of variance （ANOVA） and ANN analysis resulted in definition of optimum levels for each factor by two completely different methods. According to the results, melting temperature, coolant temperature and packing time had significant influence on the shrinkage and warpage. The ANN optimal level selection for minimiza- tion of shrinkage and/or warpage is in good agreement with ANOVA optimal level selection results. This investigation indicates that PLA-TPU compound exhibits the highest resistance to warpage and shrink- age defects compared to the other studied compounds.

关键词： Injection molding simulation Yaguchi Artificial neural networks Biodegradable plastic Disposable spoons

A highly flexible green synthesis of 1H-pyrazolo[1,2-b]phthalazine-5,10-dione derivatives with CuI nanoparticles as catalyst under solvent-free conditions

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Chinese Chemical Letters 2014年第3期25卷 401-405页

作者： javad Safaei-Ghomi Hossein Shahbazi-Alavi Abolfazl Ziarati Raheleh Teymuri mohammad Reza Saberi Department of Organic Chemistry Faculty of ChemistryUniversity of Kashan

CuI nanoparticles as an efficient catalyst have been used for the preparation of 1H-pyrazolo[l,2- b]phthalazine-5,10-diones by the four-component condensation reaction of phthalic anhydride, hydrazine monohydrate, aromatic aldehydes and malononitrile or ethyl cyanoacetate under solvent- free conditions in good to excellent yields, short reaction times and environmentally benign, milder reaction conditions.

关键词： NanoparticlesMulti-component reactionsSolvent-freePyrazolophthalazine

Modeling functional brain connections in methamphetamine and opioid abusers

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Medicine in Novel Technology and Devices 2024年第1期21卷 88-96页

作者： Nasimeh Marvi javad Haddadnia mohammad Reza Fayyazi Bordbar Hakim Sabzevari University SabzevarIran Psychiatry and Behavioral Sciences Research Center Mashhad University of Medical SciencesMashhadIran

Substance abuse has become a significant problem *** primary purpose of this study was to model the functional brain connectivity in methamphetamines(Meth)and opioids(Op)groups in comparison with the healthy control(HC)*** data were recorded in Meth(n=8),Op(n=12),and HC groups(n=12)in a closed-eye resting *** NeuCube model based on a spiking neural network was used for EEG data's functional brain connectivity *** NeuCube model was evaluated quantitatively and qualitatively with model descriptive *** results showed the average value of the neuron's activation level,spikes emitted from neurons,and clustering coefficient as a communication parameter in the HC group decreased from 1154,1103,0.026 to 1036,981,0.020 in the Op group and to 511,468,0.009 in the Meth group,*** changes in indices were significant according to the ANOVA test with p〈*** decrease in indices was more significant in the Meth group than in the Op *** research findings showed that the abuse of Meth and Op causes damage to the brain's functional *** damage included shortening and limiting communication routes and decreased neurons'ability to generate membrane potential and emit inhibitory and excitatory *** were reported to be more severe in the Meth group than in the Op group.

关键词： Electroencephalogram Methamphetamines NeuCube model Opioids Spiking neural networks

Period–Luminosity Relationship forδScuti Stars Revisited

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Research in Astronomy and Astrophysics 2024年第2期24卷 138-143页

作者： Atila Poro S.javad Jafarzadeh Roghaye Harzandjadidi mohammad Madani Elnaz Bozorgzadeh Esfandiar Jahangiri Ahmad Sarostad Ailar Alizadehsabegh Maryam Hadizadeh mohammad EsmaeiliVakilabadi The Raderon AI Laboratory Astronomy DepartmentBurnabyBCCanada Department of Physics University of Texas at Dallas800 W.Campbell Rd.RichardsonTX 75080USA Department of Theoretical Physics and Astrophysics University of ZanjanZanjanIran Independent researcher TehranIran Department of Electronics and Telecommunications Politecnico Di TorinoTurinItaly Independent researcher IsfahanIran Yazd Desert Night Sky Astronomy Institute YazdIran Department of Photonics Tabriz UniversityTabrizIran Khayyam Astronomy Association FarsFasaIran

The Gaia DR3 parallax approach was used to estimate the absolute parameters of 2375δScuti stars from the ASAS *** selected stars have a variety of observational characteristics,with a higher than 80%probability of beingδScuti *** have displayed all the stars in the Hertzsprung-Russell diagram along with theδScuti instability strip,the Zero Age Main Sequence and the Terminal Age Main ***,we determined which fundamental and overtone modes each star belongs to using pulsation constant(Q)*** addition,we evaluated the parameters in the Q calculation equation using three machine learning methods,which showed that surface gravity and temperature have the greatest effect on its *** Period-Luminosity(P-L)relationship of theδScuti stars was also ***,using least squares linear regression,we made four linear fits for fundamental and overtone modes and updated their relationships.

关键词： stars variables delta Scuti--stars fundamental parameters-methods data analysis