|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Effect of ultrasonic irradiation on rheological properties of asphaltenic crude oils显示文摘In this work, the rheological changes of several crude oil samples exposed to ultrasonic waves for different time intervals in addition to the effect of temperature on viscosity behavior of heavy crude oils were investigated using a series of steady shear flow and oscillatory tests. The colloidal structural evolutions of flocs in oil samples were illustrated by analysis of the size distribution of flocculated asphaltene particles (confocal microscopy tests). The rheological investigations indicate that the ultrasonic irradiation dissolved heavy components in crude oil. After ultrasonic treatment, the Kouh-e-Mond crude oil was found to be pseudoplastic. In addition, confocal microscopy confirms that there was an optimum duration for ultrasonic irradiation, at which the viscosity and flocculation rate of asphaltenic crude oils reduced to the minimum values. The optimum was found to be approximately 40 min for the Kouh-e-Mond crude oil. Experimental results illustrate that the ultrasonic irradiation could disaggregate heavy colloid components in crude oil, and breakdown of asphaltene molecules would only occur in a specific time interval of irradiation. Also according to the temperature sweep test, the oil temperature rise caused by ultrasonic irradiation was not the main reason for rheological changes of the crude oil and this alteration may be due to physical and chemical phenomena induced by sonication in crude oil. | MOUSAVI Seyed Mohammadreza RAMAZANI Ahmad NAJAFI Iman DAVACHI Seyed Mohammad | 2012 | Petroleum Science2012，9，1： | 10 |
| 2 | An overview of carbon nanotubes role in heavy metals removal from wastewater显示文摘The scarcity of water, mainly in arid and semiarid areas of the world is exerting exceptional pressure on sources and necessitates offering satisfactory water for human and different uses. Water recycle/reuse has confirmed to be successful and promising in reliable water delivery. For that reason, attention is being paid to the effective treatment of alternative resources of water (other than fresh water) which includes seawater, storm water, wastewater (e.g., dealt with sewage water), and industrial wastewater. Carbon nanotubes (CNTs) are called the technology of 21st century. Nowadays CNTs have been widely used for adsorption of heavy metals from water/ wastewater due to their unique physical and chemical properties. This paper reviews some recent progress (from 2013 to 2018) in the application of CNTs for the adsorption of heavy metals in order to remove toxic pollutants from contaminated water. CNTs are expected to be a promising adsorbent in the future because of its high adsorption potential in comparison to many traditional adsorbents. | Leila Ouni Ali Ramazani Saeid Taghavi Fardood | 2019 | Frontiers of Chemical Science and Engineering2019，13，2： | 5 |
| 3 | Synthesis and Chemical Shifts Calculation of α-Acyloxycarboxamides Derived from Indane-1,2,3-trione by DFT and HF Methods显示文摘α-Acyloxycarboxamides are synthesized from three-component Passerini reaction between indane-1,2,3-trione, isocyanides, and thiophenecarboxylic acids in quantitative yields. The structures of the final products were confirmed by IR, 1H and 13C NMR spectroscopy, mass spectrometry, and elemental analysis. The B3LYP/HF calculations for computation of 1H and 13C NMR chemical shifts have been carried out for the title compounds at the 6-311+G** and 6-311++G** basis set levels within GIAO and CSGT approaches. Predicted 1H and 13C NMR che-mical shifts have been assigned and compared with experimental 1H and 13C NMR spectra and they are supported each other. | Hooriye Yahyaei Ali Reza Kazemizadeh Ali Ramazani | 2012 | Chinese Journal of Structural Chemistry2012，31，9： | 3 |
| 4 | Synthesis and Infrared Spectra Computation of Sterically Congested 2,2-Disubstituted Indane-1,3-dione Derivatives显示文摘Sterically congested 2,2-disubstituted indane-1,3-dione derivatives have been syn-thesized and characterized by 1H NMR,13C NMR,FT-IR and elemental analysis.The B3LYP/HF calculations for computation of IR spectra have been carried out for the title compounds at the 6-31G and 6-311++G basis set levels.Predicted vibrational frequencies have been assigned and compared with the experimental FT-IR spectra and they are supported each other. | Seyed Mohammad Shoaei Ali Reza Kazemizadeh Ali Ramazani | 2011 | Chinese Journal of Structural Chemistry2011，30，4： | 2 |
| 5 | Pseudo four-component and regioselective synthesis of 4-amino-3,5-dicyano-6-arylphthalates using triethylamine catalyst显示文摘An efficient triethylamine-catalyzed synthesis of 4-amino-3,5-dicyano-6-arylphthalates is described.A one-pot,simple pseudo four-component reaction between arylaldehydes,dialkyl acetylenedicarboxylates, and twice as much malononitrile gave 4-amino-3,5-dicyano-6-arylphthalates in good to excellent yields. | Bagher Mohammadi Mansoor Shafieey Hamed Kazemi Ali Ramazani | 2013 | Chinese Chemical Letters2013，24，6： | 2 |
| 6 | Grindability Evaluation and Fatigue and Wear Behavior of Conventional and Nanostructured Al2O3-13?Wt.% TiO2 Air Plasma Sprayed Coatings显示文摘 | M. Ramazani J. Khalil-Allafi R. Mozaffarinia | 2010 | Journal of Thermal Spray Technology2010，，3： | 1 |
| 7 | Rheology of fibber suspensions in viscoelastic media :experiment and modelpredictions显示文摘 | Ramazani S A A Ait-kadi A Gramela M | 2001 | J Rheol2001，45，4： | 1 |
| 8 | An in vitro comparison of root canal transportation by reciproc file with and without glide path 显示文摘 | Nazarimoghadam K Daryaeian M Ramazani N | 2014 | J Dent ( Tehran )2014，11，5： | 1 |
| 9 | Kinet Macromol Symp显示文摘 | Dashti A Ramazani S A A Hiraoka Y Kim S Y Taniike T Terano M | 2009 | 2009，，： | 1 |
| 10 | Polycarbonate surface cell's adhesion examination after Nd: YAG laser irradiation 显示文摘 | Ramazani S A A Mousavi S A Seyedjafari E | 2009 | Materials Science and Engineering C(S0928-4931)2009，29，4： | 1 |
| 11 | Tensile bond strength of sealants following Er:YAG laser etching compared to acid etching in permanent teeth显示文摘 | Shahabi S Bagheri HD Ramazani K | 2011 | Lasers Med Sci2011，19，1： | 1 |
| 12 | Iran and the Arab-Israeli Conflict 显示文摘 | Ramazani | 1978 | Middle East Journal1978，32，4： | 1 |
| 13 | Failure initiation in dual-phase steel显示文摘 | RAMAZANI A SCHWEDT A ARETZ A | 2014 | Key Engineering Materials2014，586，： | 1 |
| 14 | Investigation of flame retardaney and physical- mechanical properties of zinc borate and aluminum hydroxide propylene composites 显示文摘 | RAMAZANI S A A RAHIMI A FROUNCHI M | 2008 | Mater Des2008，29，5： | 1 |
| 15 | Preparation of ultrahigh- molecular-weight polyethylene/carbon nanotube nanocomposites with a Ziegler-Natta catalytic system and investigation of their thermal andmechanical properties显示文摘 | Meschi Amoli B Ahmad Ramazani S A lzadi Hadi | 2012 | Journal of Applied Polymer Science2012，125，： | 1 |
| 16 | Effect of incorporating Elaeagnus angustifolia extract in PCL-PEG-PCL nanofibers for bone tissue engineering显示文摘Plants have been used for medicinal purposes for thousands of years but they are still finding new uses in modem times. For example, Elaeagnus angustifolia (EA) is a medicinal herb with antinociceptive, anti-inflammatory, antibacterial and antioxidant properties and it is widely used in the treatment of rheumatoid arthritis and osteoarthritis. EA extract was loaded onto poly(ε-caprolactone)- poly(ethylene glycol)-poly(ε-caprolactone)(PCLPEG-PCL/EA) nanofibers and their potential applications for bone tissue engineering were studied. The morphology and chemical properties of the fibers were evaluated using Fourier transform infrared spectroscopy, field emission scanning electron microscopy, contact angle measurements and mechanical tests. All the samples had bead-free morphologies with average diameters ranging from 100 to 200 nm. The response of human cells to the PCL-PEGPCL/ EA nanofibers was evaluated using human dental pulp stem cells (hDPSCs). The hDPSCs had better adhesion and proliferation capacity on the EA loaded nanofibers than on the pristine PCL-PEG?PCL nanofibers. An alizarin red S assay and the alkaline phosphatase activity confirmed that the nanofibrous scaffolds induced osteoblastic performance in the hDPSCs. The quantitative real time polymerase chain reaction results confirmed that the EA loaded nanofibrous scaffolds had significantly upregulated gene expression correlating to osteogenic differentiation. These results suggest that PCL-PEG-PCL/ EA nanofibers might have potential applications for bone tissue engineering. | Vahideh R.Hokmabad Soodabeh Davaran Marziyeh Aghazadeh Effat Alizadeh Roya Salehi Ali Ramazani | 2019 | Frontiers of Chemical Science and Engineering2019，13，1： | 1 |
| 17 | Investigation into the effects of weld zone and geometric discontinuity on the formability reduction of tailor welded blanks 显示文摘 | Abbasi M Ketabchi M Ramazani A | 2012 | Computational Materials Science2012，59，： | 1 |
| 18 | Preparation of conductive polyani- line/graphene nanocomposites via in situ emulsion polymerization and product characterization 显示文摘 | HOSSEIN BANIASADI AHMAD RAMAZANI S A SHOHREH MASHAYEKHAN | 2014 | Synthetic Metals2014，196，4： | 1 |
| 19 | Modelling the effect of microstructural banding on the flow curve behaviour of dual-phase (DP) steels显示文摘 | A. Ramazani K. Mukherjee U. Prahl W. Bleck | 2011 | Computational Materials Science2011，，1： | 1 |
| 20 | Investigation into the effects of weht zone and geometric discontinuity on the formability reduetion of tailor welded blanks 显示文摘 | Ablmsi M Ketabchi M Ramazani A et ~ | 2012 | Computational Materials Scienee2012，59，： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员