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348篇 您的检索式:作者名="Dashti"
    题名 作者 年代 出处 被引量
1Polyurethane-SAPO-34 mixed matrix membrane for CO_2/CH_4 and CO_2/N_2 separation显示文摘SAPO-34 nanocrystals(inorganic filler) were incorporated in polyurethane membranes and the permeation properties of CO_2, CH_4,and N_2 gases were explored. In this regard, the synthesized PU-SAPO-34 mixed matrix membranes(MMMs) were characterized via SEM, AFM, TGA, XRD and FTIR analyses. Gas permeation properties of PU-SAPO-34 MMMs with SAPO-34 contents of 5 wt%, 10 wt% and 20 wt% were investigated. The permeation results revealed that the presence of 20 wt% SAPO-34 resulted in 4.45%, 18.24% and 40.2% reductions in permeability of CO_2,CH_4,and N_2, respectively, as compared to the permeability of neat polyurethane membrane. Also,the findings showed that at the pressure of 1.2 MPa, the incorporation of 20 wt% SAPO-34 into the polyurethane membranes enhanced the selectivity of CO_2/CH_4 and CO_2/N_2, 14.43 and 37.46%, respectively. In this research, PU containing 20 wt% SAPO-34 showed the best separation performance. For the first time, polynomial regression(PR) as a simple yet accurate tool yielded a mathematical equation for the prediction of permeabilities with high accuracy(R^2>99%).Gholamhossein Sodeifian Mojtaba Raji Morteza Asghari Mashallah Rezakazemi Amir Dashti 2019Chinese Journal of Chemical Engineering2019,27,2:3
2Overcoming seed dormancy of mooseer(Allium hirtifolium) through cold stratification,gibberellic acid,and acid scarification显示文摘Mooseer(Allium hirtifolium Boiss.) is bulbous perennial herb widely used in pharmaceutical and food industry in Iran.We studied germination of mooseer seeds in two separate experiments.In the first experiment,we evaluated four treatments:sulfuric acid scarification,sandpaper scarification,cold stratification,and gibberellic acid(GA 3) application.In the second experiment,we evaluated combinations of these treatments.All treatments in the first experiment had no effect on seed germination,suggesting that mooseer seeds have physical and physiological dormancy.In the second experiment,the highest germination percentage(86.6%) was observed after five minutes scarification with sulfuric acid(75% v/v),followed by 60 days of cold stratification.Duration of sulfuric acid scarification(5,10,and 20 min) did not affect germination rates,but increasing duration of cold stratification(from 15 to 60 days),increased germination from 28.3% to 86.6%.Our study showed that mooseer seeds have both physical and physiological dormancy.Farshad Dashti Hojat Ghahremani-Majd Mahmood Esna-Ashari 2012Journal of Forestry Research2012,23,4:3
3伊朗扎格罗斯地区Mansuri油田储集层物性模拟显示文摘以伊朗Mansuri油田50口井的常规测井资料为基础,优选人工智能算法,对Mansuri油田白垩系Ilam组4个层的孔隙度和渗透率分布进行模拟。首先利用5口有岩心物性分析资料的井,遴选出常规测井的声波时差、密度和中子孔隙度作为输入参数,采用反向传播人工神经网络(BP神经网络)和支持向量回归方法进行储集层孔隙度和渗透率计算,根据计算结果与岩心实测结果的相关性,选择采用BP神经网络法进行物性计算。然后,利用克里金地质统计算法,对Mansuri油田Ilam组4个层的孔隙度和渗透率分布进行模拟,结果表明,层2.1和层2.2为高孔隙度层,层1、层2.1和和层2.2高渗透层,层3为非储集层;储集层孔隙度和渗透率分布总体呈北部高、南部低的特点。ALI Dashti EBRAHIM Sefidari 2016石油勘探与开发2016,43,4:2
4Trans polyunsaturated fatty acids have more adverse effects than saturated fatty acids on the concentration and composition of lipoproteins secreted by human hepatoma HepG2 cells 显示文摘DASHTI N FENG Q FREEMAN M R 2002J Nutr2002,132,:1
5Microneurosurgical management ofmiddle cerebral artery bifurcation aneurysms显示文摘Dashti R Rinne J Hernesniemi J 2007Surg Neuro2007,67,5:1
6Microscope-integrated near-infrared indocyanine green videoangiography during surgery of intracranial aneurysms: the Helsinki experience显示文摘Dashti R Laakso A Niemelalvl 2009Surg Neurol2009,71,5:1
7Microneuro- surgical management of anterior communicating artery a- neurysms显示文摘Hernesniemi J Dashti R Lehecka M 2008Surg Neurol2008,70,1:1
8Microsurgical treatment of third ventricular colloid cysts by interhemispheric far lateral transcallosal approach-experience of 134 patients显示文摘Hernesniemi J Romani R Dashti R 2008Surg Neurol2008,69,5:1
9Cranial dural arteriovenous fistula: transarterial Onyx embolization experience and technical nuances 显示文摘Hu YC Newman CB Dashti B 2011J Neuroint Surg2011,3,1:1
10Operative in- tracranial infection following craniotomy显示文摘Dashti SR Baharvahdat H Spetzler RF 2008Neurosurgical focus2008,24,6:1
11Third ventriculostomy through the fenestrated lamina terminalis during microneurosurgical clipping of intracranial aneurysms:an alternative to conventional ventriculostomy显示文摘Lehto H Dashti R Karatas A 0,,03:1
12Mechanical thrombectomy as first-line treatment forvenous sinus thrombosis:technical considerations and preliminary results using the Angio Jet device显示文摘Dashti S R Hu Y C Yao T 2013J Neurol Intervent Surg2013,5,1:1
13The clinical quandary of left and right ventricular diastolic dysfunction and diastolic heart failure显示文摘Schwarz ER Dashti R 2010Cardiovasc J Afr2010,21,4:1
14Microsurgical treatment of third ventricular colloid cysts by interhemispheric far lateral transcallosal approach-experience of134 patients显示文摘Hernesniemi J Romani R Dashti R 2008Surg Neurol2008,69,5:1
15Chronic cadmium toxicity to sperm of heavy cigarette smokers: immunomodulation by zinc 显示文摘Al-Bader A Omu AE Dashti H 1999Arch Androl1999,43,2:1
16Microneurosurgical management of middle cerebral artery bifurcation aneurysms 显示文摘Dashti R Hernesniemi J Nicmela M 2007Surg Neurol2007,67,5:1
17Brain selenium accumulation in rat pups of selenium supplemented mothers 显示文摘Bou-Resli M N Mathew T C Dashti H M 2002Anal Histol embryol2002,31,4:1
18Microneurosurgical management of anterior communicating artery aneurysms显示文摘Hernesniemi J Dashti R Lehecka M 2008Surg Neurol2008,70,1:1
19Microneurosurgical management of anterior choroid artery aneurysms显示文摘Lehecka M Dashti R Laakso A 2010World Neurosurg2010,73,5:1
20Microscope-integrated near-infrared indocyanine green video angiography during surgery of intracranial aneurysms: the Helsinki experience 显示文摘Dashti R Laakso A Niemela M et al 2009Surg Neurol2009,71,5:1
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