|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Feasibility of using electrokinetics and nanomaterials to stabilize and improve collapsible soils显示文摘Loess as a subcategory of collapsible soils is a well-known aeolian deposit generally characterized as a highly-porous medium with relatively low natural density and water content and a high percentage of fine-grained particles.Such collapsible soil sustains large stresses under a dry condition with natural water content.However,it can experience high and relatively sudden decreases in its volume once it reaches a certain water content under a certain load and therefore,the natural condition of the soil might not be suitable for construction if the possibility of the exposure of the soil to excessive water exists during the lifetime of the project.This research presents the utilization of an innovative method for stabilization and improvement of Gorgan loessial soil.This method uses electrokinetics and nanomaterials to instigate additives to move through soil pores,as an in situ remedial measure.To assess the acceptability of this measure,the deformability and strength characteristics of the improved collapsible soil are measured and compared with those of the unimproved soil,implementing several unsaturated oedometer tests under constant vertical stress and varying matric suction.The result emphasizes the importance of the matric suction on the behavior of both improved and unimproved soils.The test results indicate that the resistance of the soil was highly dependent on the water content and matric suction of the soil.The oedometer tests on samples improved by 3%lime and 5%nanomaterials show considerable improvement of the collapse potential.Results also reveal that stabilized samples experience notably lower volume decrease under the same applied stresses. | Arash Hosseini S.Mohsen Haeri Siavash Mahvelati Aria Fathi | 2019 | Journal of Rock Mechanics and Geotechnical Engineering2019，11，5： | 3 |
| 2 | Herpes simplex encephalitis in children with autosomal recessive and dominant TRIF deficiency显示文摘 | Sancho-Shimizu Vanessa de Diego Rebeca Pérez Lorenzo Lazaro Halwani Rabih Alangari Abdullah Israelsson Elisabeth Fabrega Sylvie Cardon Annabelle Maluenda Jerome Tatematsu Megumi Mahvelati Farhad Herman Melina Ciancanelli Michael Guo Yiqi AlS | 2011 | Journal of Clinical Investigation2011，，12： | 1 |
| 3 | Nlrxl regulates neuro- nal cell death显示文摘 | Imbeauh E Mahvelati TM Braun R | 2014 | Mol Brain2014，7，： | 1 |
| 4 | Headache as a sole manifestation in nonconvulsive status epilepticus 显示文摘 | Ghofrani M Mahvelati F Tonekaboni H | 2006 | J Child Neurol2006，21，11： | 1 |
| 5 | Headache as a sole manifestation in noneonvulsive status epilepticus显示文摘 | Ghofrani M Mahvelati F Tonekaboni H | 2006 | J child Neurol2006，21，： | 1 |
| 6 | Effects of graphene oxide/TiO_(2) nanocomposite,graphene oxide nanosheets and Cedr extraction solution on IFT reduction and ultimate oil recovery from a carbonate rock显示文摘Increasing the number of depleted reservoirs and global demand for energy have left us with low alternative but to use new ways to extract more hydrocarbon.Amongst different material used for tertiary oil recovery,surfactant injection has proved very promising solutions,such as interfacial tension reduction and wettability alteration.Without any harm to the environment and meanwhile being economically feasible,natural surfactants have been attracted researchers in recent years.Cedr extraction which is produced from Zizyphus Spina Christi leaves has shown some beneficial characteristics like IFT reduction and wettability alteration.However,the amount of IFT reduction is not considerable,so we decided to augment its effectiveness by adding two different nanoparticles.In this investigation,three concentrations(0.01,0.05 and 0.1 wt%)of both graphene oxide(GO)nanosheet and GO/TiO_(2) nanocomposite was added to Cedr extraction solution to study their potential on IFT reduction and improving the ultimate oil recovery.The concentration of 0.05 wt percent showed the lowest IFT in both solutions.At this concentration,the IFT of GO/TiO_(2)-augmented solution and GO-augmented solution were measured of 10.5 and 12.3 mN/m,respectively.While the bare Cedr solution showed 23.8 mN/m at its critical micelle concentration.The coreflooding tests were also performed at the aforementioned concentrations.Final oil recovery reached to 65%of original oil volume in GO/TiO_(2)-augmented solution,compared to 56% in GO-augmented solution case and 40%in bare Cedr solution case.Scanning Electron Microscopy images were also taken from the rock samples exposed to nanofluids to investigate any severe harm to the permeability.Images showed low tendency of both particles to adsorb on rock surface and plug large pores. | Amin Garmroudi Mahdi Kheirollahi Sayed Amirhosein Mousavi Moslem Fattahi Elaheh Hamed Mahvelati | 2022 | Petroleum2022，8，4： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员