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| 1 | Improving methane storage on wet activated carbons at various amounts of water显示文摘Different mesoporous activated carbons were prepared by both chemical and physical activation processes and were examined for methane uptake in the presence of water.Methane isotherms were obtained at wet condition by wetting samples with water at mass ratio of water/carbon(R) close to 1.0.To compare,the amount of methane storage were also measured at dry situation.The maximum amount of methane stored was attained as 237 V/V at R=1.0 by hydrate formation at the methane critical pressure.In the next step,mass ratios of water/carbon were changed to investigate various amount of water for methane storage enhancement.Two other values of mass ratio of water/carbon(R=0.8 and 1.4) were selected and methane isotherms were obtained at the same conditions.Maximum values of 210 and 248 V/V were reached for methane storage,respectively.It was also observed that,in the pressure range lower than hydrate pressure,by increasing water ratio the hydrate formation pressure was decreased and methane uptake was much less than that of dry condition due to pore filling by water. | MOHAMMAD JABER DARABI MAHBOUB ALI AHMADPOUR HAMED RASHIDI | 2012 | 燃料化学学报2012，40，4： | 7 |
| 2 | 纳米SiO_2负载Preyssler杂多酸催化剂对水杨酸与苄醇或脂肪醇酯化反应的催化性能(英文)显示文摘An efficient and environmentally benign procedure for the catalytic esterification of salicylic acid with aliphatic alcohols, CnH2n+1OH(n=1-5)and benzylic alcohols,RC6H4CH2OH(R=H,NO2,OCH3,Br,Cl,Me)was developed using nano-SiO2-supported Preyssler heteropolyacid both under thermal conditions and microwave irradiation.Silica nanostructures were obtained through a sol-gel method and were characterized by transmission electron microscopy and powder X-ray diffraction.The effects of various parameters such as solvent type,molar ratio of substrates,Preyssler heteropolyacid loading on silica,catalyst amount,temperature,and reaction time were studied and the optimum conditions were obtained.It has been found that the catalyst with 30 wt%loading is highly active and shows high yields in esterification reactions.The use of nano-SiO2-supported Preyssler heteropolyacid coupled with microwave irradiation allows a solvent-free,rapid(3 min),and high-yielding reaction.This catalyst can be easily recovered and reused for many times without a significant loss in its activity. | Fatemeh F. BAMOHARRAM Majid M. HERAVI Javad EBRAHIMI Ali AHMADPOUR Mojtaba ZEBARJAD | 2011 | 催化学报2011，32，5： | 6 |
| 3 | Biodegradable starch/poly(vinyl alcohol) film reinforced with titanium dioxide nanoparticles显示文摘Biodegradable starch/poly(vinyl alcohol)/nano-titanium dioxide(ST/PVA/nano-TiO2)nanocomposite films were prepared via a solution casting method.Their biodegradability,mechanical properties,and thermal properties were also studied in this paper.A general full factorial experimental approach was used to determine efective parameters on the mechanical properties of the prepared films.ST/PVA/TiO2nanocomposites were characterized by scanning electron microscopy(SEM)and X-ray difraction(XRD).The results of mechanical analysis show that ST/PVA films with higher contents of PVA have much better mechanical properties.In thermal analysis,it is found that the addition of TiO2nanoparticles improves the thermal stability of the films.SEM micrographs,taken from the fracture surface of samples,illustrate that the addition of PVA makes the film softer and more flexible.The results of soil burial biodegradation indicate that the biodegradability of ST/PVA/TiO2films strongly depends on the starch proportion in the film matrix.The degradation rate is increased by the addition of starch in the films. | Zahra Hejri Ali Akbar Seifkordi Ali Ahmadpour Seyed Mojtaba Zebarjad Abdolmajid Maskooki | 2013 | International Journal of Minerals,Metallurgy and Materials2013，20，10： | 5 |
| 4 | The effect of a variable plastic viscosity on the restart problem of pipelines filled with gelled waxy crude oils 显示文摘 | Ali Ahmadpour Kayvan Sadeghy Seyed-Reza Maddah-Sa- datieh | 2014 | Journal of Non-Newtonian Fluid Mechanics2014，205，5： | 1 |
| 5 | Photocatalytic Synthesis of Gold Nanoparticles Using Preyssler Acid and Their Photocatalytic Activity显示文摘Preyssler acid H14[NaP5W30O110] was used as reducing agent and stabilizer for the synthesis of gold nanoparticles by photolysis of Au(III)/Preyssler acid/propan-2-ol solution.Preyssler acid plays both the role of transferring electrons from propan-2-ol to Au(III) and stabilizing the nanoparticles.Propan-2-ol was used as sacrificial reagent for the photoformation of reduced Preyssler acid.Gold nanoparticles (Au NPs) were characterized by UV-Vis spectroscopy,transmission electron microscopy (TEM),and particle size distribution (PSD) measurements.The synthesized Au NPs had a uniform hexagonal morphology and their size was about 17 nm.The catalytic performance of these NPs for photodegradation of methyl orange (MeO) was investigated in aqueous solution.UV-Vis studies showed that Au NPs can catalyze photodegradation of this azo dye.The pseudo-first-order rate constants were also calculated for this reaction. | Ali AYATI Ali AHMADPOUR Fatemeh F.BAMOHARRAM Majid M.HERAVI Hamed RASHIDI | 2011 | 催化学报2011，32，6： | 1 |
| 6 | Evaluating the effect of montelukast tablets on respiratory complications in patients following blunt chest wall trauma:A double-blind,randomized clinical trial显示文摘Purpose:Patients with multiple traumas are at high risk of developing respiratory complications,including pneumonia and acute respiratory distress syndrome.Many pulmonary complications are associated with systemic inflammation and pulmonary neutrophilic infiltration.Leukotriene-receptor antagonists are anti-inflammatory and anti-oxidant drugs subsiding airway inflammation.The present study investigates the effectiveness of montelukast in reducing pulmonary complications among trauma patients.Methods:This randomized,double-blind,placebo-control trial was conducted in patients with multiple blunt traumas and evidence of lung contusion detected via CT scan.We excluded patients if they met at least one of the following conditions:< 16 years old,history of cardiopulmonary diseases or positive history of montelukast-induced hypersensitivity reactions.Patients were allocated to the treatment (10 mg of montelukast) or placebo group using permuted block randomization method.The primary measured outcome was the volume of pulmonary contusion at the end of the trial.The secondary outcomes were intensive care unit and hospital length of stay,ventilation days,multi-organ failure,and the in-hospital mortality rate.Results:In total,65 eligible patients (treatment = 31,placebo = 34) were included for the final analysis.The treatment group had more pulmonary contusion volume (mean (SD),mm3) at the right (68726.97 (93656.54)vs.59730.27 (76551.74)) and the left side (67501.71 (91514.04)vs.46502.21 (80604.21)),higher initial C-reactive peptide level (12.16 (10.58)vs.10.85 (17.87)) compared to the placebo group,but the differences were not statistically significant (p > 0.05).At the end of the study,the mean (SD) of pulmonary contusion volume (mm3) (right side = 116748.74 (361705.12),left side = 64522.03 (117266.17)) of the treatment group were comparable to that of the placebo group (right side = 40051.26 (64081.56),left side = 25929.12 (47417.13),p = 0.228 and 0.082,respectively).Moreover,both groups have statistically similar hospital (mean (SD),days) (10.87 (9.83)vs.13.05 (10.12)) and intensive care unit length of stays (mean (SD),days) (7.16 (8.15)vs.7.82 (7.48)).Of note,the frequency of the in-hospital complications (treatmentvs.control group) including acute respiratory distress syndrome (12.9%vs.8.8%,p = 0.71),pneumonia (19.4%vs.17.6%,p = 0.85),multi-organ failure (12.9%vs.17.6%,p = 0.58) and the mortality rate (22.6%vs.14.7%,p = 0.41) were comparable between the groups.Conclusion:Administrating montelukast has no preventive or therapeutic effects on lung contusion or its complications. | Soleyman Heydari Hadi Khoshmohabat Ali Taheri Akerdi Fathollah Ahmadpour Shahram Paydar | 2023 | Chinese Journal of Traumatology2023，26，2： | 0 |
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