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| 1 | Application of Modified Silica Coated Magnetite Nanoparticles for Removal of Iodine from Water Samples显示文摘The adsorption of iodine onto silica coated magnetite nanoparticles(im-SCMNPs) that modified with imidazole was investigated for removal of high concentrations of iodine from wastewater. Modified silica magnetite nanoparticles showed high efficiency in removing iodine from wastewater samples. The optimum pH for iodine removal was 7.0-8.0. The adsorption capacity was evaluated using both the Langmuir and Freundlich adsorption isotherm models. The size of the produced magnetite nanoparticles was determined by X-ray diffraction analysis and scanning electron microscopy. Synthesized magnetite nanoparticles showed the high adsorption capacity and would be a good method to increase adsorption efficiency for the removal of iodine in a wastewater treatment process. The Langmuir adsorption capacity(qmax) was found to be 140.84 mg/g of the adsorbent. | Tayyebeh Madrakian Abbas Afkhami Mohammad Ali Zolfigol Mazaher Ahmadi Nadia Koukabi | 2012 | Nano-Micro Letters2012，4，1： | 5 |
| 2 | Impact of RAS and BRAF mutations on carcinoembryonic antigen production and pattern of colorectal metastases显示文摘AIM: To investigate the impact of RAS and BRAF mutations on the pattern of metastatic disease and carcinoembryonic antigen(CEA) production.METHODS: In this retrospective study, we investigated the impact of RAS and BRAF mutational status on pattern of metastatic disease and CEA production. Only patients presenting with a newly diagnosed metastatic colorectal cancer(CRC) were included. Patients' characteristics, primary tumor location, site of metastatic disease and CEA at presentation were compared between those with and without RAS and BRAF mutations.RESULTS: Among 174 patients, mutations in KRAS, NRAS and BRAF were detected in 47%, 3% and 6% respectively. RAS mutations(KRAS and NRAS) were more likely to be found in African American patients(87% vs 13%; P value = 0.0158). RAS mutations were associated with a higher likelihood of a normal CEA(< 5 ng/mL) at presentation. BRAF mutations were more likely to occur in females. We were not able to confirm any association between mutational status and site of metastatic disease at initial diagnosis.CONCLUSION: No association was found between RAS and BRAF mutations and sites of metastatic disease at the time of initial diagnosis in our cohort. Patients with RAS mutations were more likely to present with CEA levels < 5 ng/mL. These findings may have clinical implications on surveillance strategies for RAS mutant patients with earlier stages of CRC. | may cho chie akiba cecilia lau david smith milhan telatar michelle afkhami stephen sentovich kurt melstrom marwan fakih | 2016 | World Journal of Gastrointestinal Oncology2016，8，1： | 3 |
| 3 | CO_(2) sequestration through direct aqueous mineral carbonation of red gypsum显示文摘In this study,the physical and chemical characteristics and direct aqueous mineral carbonation of red gypsum have been investigated.The characterization studies showed that red gypsum is a very potential feedstock for mineral carbonation.It is mainly consisted of CaO,Fe2O3 and SO3 along with some impurities.On the other hand,the carbonation results showed that direct aqueous carbonation of red gypsum resulted in CaCO3 and FeCO3 production,however,the carbonates purity and carbonation efficiency are still very low. | Amin Azdarpour Mohammad Afkhami Karaei Hossein Hamidi Erfan Mohammadian Bizhan Honarvar | 2018 | Petroleum2018，4，4： | 3 |
| 4 | Simultaneous spectrophotometric determination of binary mixtures of surfactants using continuous wavelet transformation 显示文摘 | AFKHAMI A NEMATOLLAHI D MADRAKIAN T | 2009 | Journal of Hazardous Materials2009，166，2： | 1 |
| 5 | Simultane- ous Removal of Heavy-metal Ions in Wastewater Samples Using Nano-alumina Modified with 2,4- Dinitrophenylhydrazine 显示文摘 | Afkhami A Saber-Tehrani M Bagheri H | 2010 | Journal of Hazardous Materials2010，181，13： | 1 |
| 6 | The effect of acid treatment of carbon cloth on the adsorption of nitrite and nitrate ions显示文摘 | Afkhami A Madrakian T Karimi Z | 2007 | J Hazard Mater2007，144，12： | 1 |
| 7 | Spectrophotometric determination of periodate,iodate and bromate mixtures based on their reaction with iodide显示文摘 | AFKHAMI A MADRAKIAN T ZAREI A R | 2001 | Anal Sci2001，17，10： | 1 |
| 8 | Simultaneous kinetic-spectrophotometric determination of periodate-bromate and iodate-bromate mixtures using H-point standard addition method显示文摘 | AFKHAMI A ZAREI A R | 2003 | Talanta2003，60，1： | 1 |
| 9 | Acidity constants of someorganic acids in the presence ofβ-cyclodextrin in binary ethanol-water mixtures by rank annihilation factor analysis显示文摘 | Khalafi Lida Rohani M Afkhami A | 2008 | Journal ofChemical and Engineering Data2008，53，： | 1 |
| 10 | Removal, preeoneentration and spectrophotometrie determination of U( VI ) from water samples using modified maghemite nan- opartieles 显示文摘 | MADRAKIAN T AFKHAMI A RAHIMI M | 2012 | Journal of Radioanalytieal and Nuclear Chemistry2012，292，2： | 1 |
| 11 | Sensitive spcctropbotometric determination of formaldehyde by inhibition of the malachite greensulfite reaction 显示文摘 | AFKHAMI A REZAEI M | 1999 | Microchcmical Journal1999，63，： | 1 |
| 12 | Semaphorin 4D/plexin-B1 induces endothelial cell migration through the activation of PYK2, Sre, and the phosphatidylinositol 3-kinase-Akt pathway 显示文摘 | Basile J R Afkhami T Gutkind J S | 2005 | Mol Cell Biol2005，25，16： | 1 |
| 13 | Simultaneous spectrophotometric determination of binary mixtures of surfactants using continuous wavelet transformation显示文摘 | AFKHAMI A NEMATOLLAHI D MADRAKIAN T | | 0，，： | 1 |
| 14 | Design and characteristics of a sulfide and sulfite optode based on immobilization of methyl violet on a triacetylcellulose membrane 显示文摘 | Abbas Afkhami Nahid Sarlak | 2007 | Sensors and Actuators B2007，124，： | 1 |
| 15 | Highly sensi- tive and selective determination of thiocyanate using gold nanop articles surface decorated multi-walled carbon nanotubes modi- fied carbon paste electrode显示文摘 | Afkhami A Soltani-Felehgari F Madrakian T | 2014 | Sensors and Actuators B2014，196，： | 1 |
| 16 | Adsorption and electrosorption of nitrate and nitrite on high-area carbon cloth:An approach to purification of water and wastewater samples显示文摘 | Afkhami A | 2003 | Carbon2003，41，6： | 1 |
| 17 | Kinetic-spectrophotometric determination of trace amounts of As ( m ) based on its inhibitory effect on the redox reaction between bromate and hydrochloric acid 显示文摘 | Afkhami A Madrakian T Assl AA | 2001 | Talanta2001，55，： | 1 |
| 18 | Catalytic Determination of Trace Amounts ofTellurium(Ⅳ ) Based on Its Catalytic Effect in the Reduction Reaction of Bromate withHydrazinium Dichloride显示文摘 | Safavi A Afkhami A Massoumi A | 1995 | Microchem J1995，52，： | 1 |
| 19 | Development of a cost-effective technique to remove the arseniccontamination from aqueous solutions by calcium peroxide nanoparticles显示文摘 | Ehsan Olyaie Hossein Banejad Abbas Afkhami | 2012 | Separation and Purification Technology2012，95，： | 1 |
| 20 | Micell-mediated extraction for the spectrophotometric determination of ni- trite in water and biological samples based on its reaction with p-nitroaniline in the presence of diphenylamine 显示文摘 | Afkhami A Bahram M Gholami S | 2005 | Analytical Biochemistry2005，336，2： | 1 |
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