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28篇 您的检索式:作者名="Pezhman"
    题名 作者 年代 出处 被引量
1纳米孔碳负载Fe_3O_4催化剂上苯直接羟基化制苯酚(英文)显示文摘Fe3O4/CMK-3 was prepared by impregnation and used as a catalyst for the direct hydroxylation of benzene to phenol with hydro-gen peroxide. The iron species in the prepared catalyst was Fe3O4 because of the partial reduction of iron(III) to iron(II) on the surface of CMK-3. The high catalytic activity of the catalyst arises from the formation of Fe3O4 on the surface of CMK-3 and the high selectivity for phenol is attributed to the consumption of excess hydroxyl radicals by CMK-3. The effect of temperature,reaction time,volume of H2O2,and amount of catalyst on the catalytic performance of the prepared catalyst were investigated. Under optimized conditions,the catalyst showed excellent catalytic performance for the hydroxylation of benzene to phenol and 18% benzene conversion was achieved with 92% selectivity for phenol and with a TOF value of 8.7 h-1. The stability of catalyst was investigated by determining its activity after the fourth run and it was found to have decreased to 80% of the fresh catalyst's activity.Pezhman ARAB Alireza BADIEI Amir KOOLIVAND Ghodsi MOHAMMADI ZIARANI 2011催化学报2011,32,2:7
2Shale hydration inhibition characteristics and mechanism of a new amine-based additive in water-based drilling fluids显示文摘In this work,shale hydration Inhibition performance of tallow amine ethoxylate as a shale stabilizer in water based drilling fluid,was investigated through these tests:bentonite hydration inhibition test,bentonite sedimentation test,drill cutting recovery test,dynamic linear swelling test,wettability test,isothermal water adsorption test,and zeta potential test.The results showed that bentonite particles are not capable of being hydrated or dispersed in the mediums containing tallow amine ethoxylate;tallow amine ethoxylate had shown a comparable and competitive inhibition performance with potassium chloride as a common shale stabilizer in drilling industry.Some amine functional groups exist in tallow amine ethoxylate structure which are capable of forming hydrogen bonding with surfaces of bentonite particles.This phenomenon decreased the water adsorption on bentonite particles'surfaces which results in reduction of swelling.Tallow amine ethoxylate is also compatible with other common drilling fluid additives.Pezhman Barati Khalil Shahbazi Mosayyeb Kamari Amir Aghajafari 2017Petroleum2017,3,4:5
3问荆提取物页岩水化膨胀抑制剂性能及防膨机理显示文摘提出将问荆提取物作为页岩水化膨胀抑制剂,通过室内实验研究了其抑制页岩水化膨胀的性能,与氯化钾和聚胺进行了对比,并分析了其防膨机理。膨润土水化抑制实验、膨润土沉淀实验、动态线性膨胀实验、滚动回收实验和吸附量测定实验结果表明:问荆提取物可以抑制膨润土的水化,阻止黏土矿物在溶液中均匀分散,减小膨润土的膨胀,抑制钻屑在水中破碎和分散,且与氯化钾和聚胺性能相当。对问荆提取物的防膨机理进行分析后发现:其成分中具有活性烃基的物质与膨润土颗粒表面间氢键缔合,降低了膨润土颗粒表面的吸水率,从而抑制膨润土膨胀。除了具有良好的防膨能力,问荆提取物获取容易、价格低廉,且不会破坏生态环境,是一种理想的页岩水化膨胀抑制剂。BARATI Pezhman KESHTKAR Sadegh AGHAJAFARI Amirhossein SHAHBAZI Khalil MOMENI Ali 2016石油勘探与开发2016,43,3:4
4Stability and extraction study of phenolic wastewater treatment by supported liquid membrane using tributyl phosphate and sesame oil as liquid membrane显示文摘Pezhman Kazemi Mohammad Peydayesh Alireza Bandegi 2014Chemical Engineering Research and De- sign2014,92,2:1
5Angiogenic proteins are expressed by brain blood vessels in Alzheimer’s disease显示文摘Lakshmi Thirumangalakudi Pezhman Ghatreh Samany Akinkunle Owoso Brandt Wiskar Paula Grammas 2006Journal of Alzheimer’s Disease2006,,1:1
6Investigation of groundwater quantitative change, Tehran Province, Iran显示文摘Changes in groundwater level in Homand-Absard plain, located in north-west of Kavir-e-Markazi watershed and east of Tehran province, were studied. The used research method was descriptive approach, and the research study was conducted based on field and desk surveys. The data needed was provided from field surveys, contours maps, and data of observation wells. There were 17 observation wells in the study area where the changes in groundwater levels were measured during 1996-2013, and an index hydrograph was prepared for the aquifer of plain. The sharpest decline in the groundwater level was in the central of Homan-Absard plain. There was 1.43 m decline in the groundwater level of aquifer annually, compared with similar studies in other parts of Iran, it has a high rate, and to the average, the groundwater level of plain has dropped equal to 25.76 m, 1996-2013. According to the study findings, the groundwater level changes with those in rainfall weren't match and the drop in groundwater level during wet years and then has continued which represents the high water extraction factor on the groundwater level drop.Pezhman ROUDGARMI Ebrahim FARAHANI 2017Journal of Groundwater Science and Engineering2017,5,3:1
7Nicotinic acetyleholine receptor gene expression is altered in burn patients 显示文摘Osta WA el-Osta MA Pezhman EA 2010Anesth Analg2010,110,5:1
8CMK-3 nanoporous carbon as a new fiber coating for solid-phase microextraction coupled to gas chromatography–mass spectrometry显示文摘Akram Rahimi Payman Hashemi Alireza Badiei Pezhman Arab Ali Reza Ghiasvand 2011Analytica Chimica Acta2011,,1:1
9Adverse effects of radioactive iodine-131 treatment for differentiated thyroid carcinoma显示文摘Armaghan Fard-Esfahani Alireza Emami-Ardekani Babak Fallahi Pezhman Fard-Esfahani Davood Beiki Arman Hassanzadeh-Rad Mohammad Eftekhari 2014Nuclear Medicine Communications2014,,8:1
10Effieaey of valganeielovir and ganeielovir for eytomegalovirus disease in solid organ trans- plants: a meta-analysis显示文摘Vaziri S Pezhman Z Sayyad B 2014J Res Med Sci2014,19,12:1
11Ketamine-associated ulcerative cystitis: A case report and literature review 显示文摘Ho C C Pezhman H Praveen S 2010Malays J Med Sci2010,17,2:1
12Implementation of 3-Port Condensing Wave Rotors in R718 Cycles显示文摘Amir AKharazi Pezhman Akbari Norbert Mtiller 2006Journal of Energy Resources Technology2006,12,128:1
13Implementation of 3- port condensing wave rotors in R718 cycles 显示文摘Amir A K Pezhman A Norbert M 2006Journal of Energy Resources Technology2006,128,12:1
14A review ofwave rotor technology and its applications 显示文摘Akbari Pezhman Nalim Razi Muller Norbert 2006Journal of Engineering for Gas Turbines and Power2006,128,4:1
15Common workflows for computing material properties using different quantum engines显示文摘The prediction of material properties based on density-functional theory has become routinely common,thanks,in part,to the steady increase in the number and robustness of available simulation packages.This plurality of codes and methods is both a boon and a burden.While providing great opportunities for cross-verification,these packages adopt different methods,algorithms,and paradigms,making it challenging to choose,master,and efficiently use them.We demonstrate how developing common interfaces for workflows that automatically compute material properties greatly simplifies interoperability and cross-verification.We introduce design rules for reusable,code-agnostic,workflow interfaces to compute well-defined material properties,which we implement for eleven quantum engines and use to compute various material properties.Each implementation encodes carefully selected simulation parameters and workflow logic,making the implementer’s expertise of the quantum engine directly available to nonexperts.All workflows are made available as open-source and full reproducibility of the workflows is guaranteed through the use of the AiiDA infrastructure.Sebastiaan P.Huber Emanuele Bosoni Marnik Bercx Jens Bröder Augustin Degomme Vladimir Dikan Kristjan Eimre Espen Flage-Larsen Alberto Garcia Luigi Genovese Dominik Gresch Conrad Johnston Guido Petretto Samuel Poncé Gian-Marco Rignanese Christopher J.Sewell Berend Smit Vasily Tseplyaev Martin Uhrin Daniel Wortmann Aliaksandr V.Yakutovich Austin Zadoks Pezhman Zarabadi-Poor Bonan Zhu Nicola Marzari Giovanni Pizzi 2021npj Computational Materials2021,,1:1
16Study on gamma-ray attenuation characteristics of some amino acids for 133Ba,137Cs, and 60Co sources显示文摘Amino acids are the building blocks of proteins,which are the most abundant macromolecules in living cells.From the standpoint of the photon interaction cross sections of amino acids,the mass attenuation coefficients,half and tenth value layers,mean free path,effective atomic and electronic cross sections,effective atomic number,and effective electron density of fifteen essential amino acids have been determined for 133Ba,137Cs,and 60Co gamma-ray sources.The MCNP-4C code and the XCOM program have been used to calculate these parameters.The results have been compared to the available experimental and theoretical data.The theoretical results agreed with the experimental data,with RD values of ≤±7%.In the energy region of 81-1332.5 keV,it was found that the μm,σa,and revalues of the amino acids decreased as the photon energy increased,and the increasing density of amino acids had no steady effect on these quantities.Additionally,results demonstrated that the HVL,TVL,and MFP values increased with the increase in photon energy.The μm,σa,and Zeff values of aspartic acid were the highest among those of all amino acids,and they were the lowest for isoleucine.The Zeff value of each sample containing H,C,N,and O atoms was nearly constant in the studied energy region.The Neffvalues of the studied amino acids varied in the range of 3.14×10^23-3.44×10^23 electron/g.Furthermore,the Neffvalues were approximately independent of the amino acid type in this energy region.Reza Bagheri Ali Yousefi Seyed Pezhman Shirmardi 2020Nuclear Science and Techniques2020,31,2:1
17Electrodeposition/re- moval of nickel in a spouted electrochemical reactor显示文摘Grimshaw P Joseph M C Pezhman A 2011Industrial & Engineering Chemistry Research2011,50,1:1
18Determination of water equivalent ratio for some dosimetric materials in proton therapy using MNCPX simulation tool显示文摘The water equivalent ratio(WER) was calculated for polypropylene(PP), paraffin, polyethylene(PE), polystyrene(PS), polymethyl methacrylate(PMMA), and polycarbonate materials with potential applications in dosimetry and medical physics. This was performed using the Monte Carlo simulation code, MCNPX, at different proton energies. The calculated WER values were compared with National Institute of Standards and Technology(NIST) data, available experimental and analytical results,as well as the FLUKA, SRIM, and SEICS codes. PP and PMMA were associated with the minimum and maximum WER values, respectively. Good agreement was observed between the MCNPX and NIST data. The biggest difference was 0.71% for PS at 150 MeV proton energy. In addition, a relatively large positive correlation between the WER values and the electron density of the dosimetric materials was observed. Finally, it was noted that PE presented the most analogous Depth Dose Characteristics to liquid water.Reza Bagheri Alireza Khorrami Moghaddam Bakhtiar Azadbakht Mahmoud Reza Akbari Seyed Pezhman Shirmardi 2019Nuclear Science and Techniques2019,30,2:1
19Ketamine-Associated Ulcera-tive Cystitis:A Case Report and Literature Review 显示文摘Ho CC Pezhman H Praveen S 2010Malays J Med Sci2010,17,2:1
20Cardiomyogenic differentiation of human sternal bone marrow mesenchymal stem cells using a combination of basic fibroblast growth factor and hydrocortisone显示文摘Pezhman H Jose S Chowdhury SR 2015Cell Biol Int2015,40,:1
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