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Extended adsorption transport models for permeation of copper ions through nanocomposite chitosan/polyvinyl alcohol thin affinity membranes

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Chinese Journal of Chemical Engineering 2016年第11期24卷 1527-1532页

作者： Ehsan Salehi leila Bakhtiari Mahdi Askari Department of Chemical Engineering Faculty of EngineeringArak University Membrane Research Center Department of Chemical EngineeringRazi University

Transport of copper ions through nanocomposite chitosan/polyvinyl alcohol thin adsorptive membranes has been mathematically investigated in the current study. Unsteady-state diffusive transport model was coupled with the Freundlich isotherm to predict the concentration of the ions in dialysis permeation operation. Pristine model was not successful in predicting the experimental data based upon its low coefficients of determination（0.1

关键词： Modeling Chitosan Nanocomposite membrane adsorbents Copper ion Dialysis

John Coates(1945-2022):生命的礼赞

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数学译林 2024年第1期43卷 22-34,21页

作者： Barry Mazur Stephen Lichtenbaum Andrew Wiles leila Schneps Sujatha Mahesh Kakde 陆柱家(译) 张晓宇(校) 哈佛大学布朗大学牛津大学 Sorbonne大学不列颠哥伦比亚大学印度科学研究所不详

1.怀念John Coates Barry Mazur(马祖尔)JohnCoates(科茨)的数学工作范围很广,包括他的智力乐趣以及他激励和指导几代数学家的才华,是给我们所有人的礼物.在我认识他的初期,就能明显感受到他的活力和友谊,他乐意分享他的想法,欣赏别人... 详细信息

1.怀念John Coates Barry Mazur(马祖尔)JohnCoates(科茨)的数学工作范围很广,包括他的智力乐趣以及他激励和指导几代数学家的才华,是给我们所有人的礼物.在我认识他的初期,就能明显感受到他的活力和友谊,他乐意分享他的想法,欣赏别人的观点.1969年,他来到哈佛大学任Benjamin Peirce(皮尔斯)助理教授.在那里,他在对JohnTate(泰特)的纪念中写道,“非常局促的办公室”,它的“现实中的小规模”和“办公室之间的小咖啡室或走廊”为他提供了一个易于与他人互动的环境.Tate向他介绍了数学的各个方面,这将把他带到后来他做出巨大贡献的地方.

关键词：助理教授皮尔斯哈佛大学

Dearomatization of normal paraffin by adsorption process using synthesized NaX zeolite

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Petroleum Science 2013年第3期10卷 408-414页

作者： Hossein Faghihian leila Riazi Department of Chemistry Shahreza Branch Islamic Azad University86145-311 Iran R&D Department I. C. I. I. C.Isfahan Iran

Linear alkyl benzenes （LABs） are the main materials for detergent production. The presence of aromatic compounds in this material can decrease the quality of the final product and enhance the deactivation rate of catalysts. In this research we used zeolite NaX for de-aromatization of the recycled paraffin from the alkylation unit of an LAB production complex. The effect of different parameters on the removal efficiency of adsorbent was studied and optimized. To study the re-usability of the adsorbent, the breakthrough curves were obtained by using a fixed bed column filled with the adsorbent. The results indicated that the adsorbent capacity remained unchanged after three regeneration cycles. The Langmuir and Freundlich adsorption models were applied to describe the equilibrium isotherms. It was concluded that the Langmuir model agreed well with the experimental data. The calculated thermodynamic parameters of the adsorption showed that the adsorption process was spontaneous and exothermic. The reaction rate was estimated by the pseudo-second order kinetic model.

关键词： Dearomatization LAB zeolite adsorption separation

SOLUBLE POLYIMIDES FROM A SEMI-ALIPHATIC DIAMINE CONTAINING ESTER,AMIDE AND ETHER GROUPS

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Chinese Journal of Polymer Science 2011年第1期29卷 93-100页

作者： Shahram Mehdipour-Ataei leila Akbarian-Feizi Iran Polymer and Petrochemical Institute P.O.Box 14965/115TehranIran

A diamine was synthesized by two successive reactions. Nucleophilic reaction of 4-hydroxybenzoic acid with terephthaloyl chloride yielded terephthaloyl bis（4-oxybenzoic） acid. Then reaction of this compound with 1,8-diamino-3,6- dioxaoctane via Yamazaki method resulted in preparation of diamine named terephthalic acid bis（4-{2-[2-（2-amino ethoxy）ethoxy]ethyl carbamoyl}phenyl） ester. After fully characterization it was used to prepare new polyimides through polycondensation with different dianhydrides using trimethylchlorosilane. Characterization of polymers was achieved by common methods and their physical properties including inherent viscosity, thermal behavior, thermal stability, crystallinity and solubility were studied. Prepared polyimides showed improved solubility and good thermal stability.

关键词： Polyimide Polycondensation Synthesis Thermal properties

Salinity assessment of groundwater for irrigation to prevent soil salinization

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排灌机械工程学报 2020年第8期38卷 819-828页

作者： leila Esmaeelnejad HAMED Rezaei Soil and Water Research Institute Agricultural ResearchEducation and Extension Organization(AREEO)Karaj ***Iran Scientific Board Soil and Water Research InstituteAgricultural ResearchEducation and Extension Organization(AREEO)Karaj ***Iran

Electrical conductivity(EC)is considered as the most important indicator for assessment of groundwater *** of suitable interpolation method for derivation of groundwater quality variables map such as EC is dependent on region conditions and existence of enough *** determining groundwater EC,341 groundwater samples were randomly collected from the central regions of Guilan province,paddy soils,in northern *** methods including inverse distance weighting(IDW),global polynomial interpolation(GPI),local polynomial interpolation(LPI),radial basis function(RBF),ordinary kriging(OK)and empirical Bayesian Kriging(EBK)were used to generate spatial distribution of groundwater *** results indicate that EBK is a superior method with the least RMSE,MAE and the highest R *** generated maps can be used to identify the regions in the studied area where groundwater could be allowed to be extracted and utilized by farmers to reduce adverse effect of the scarcity of surface water.

关键词： empirical Bayesian Kriging geostatistics GIS groundwater electrical conductivity spatial variability

Multicomponent synthesis of dihydropyridines catalyzed by L-proline

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Chinese Chemical Letters 2011年第5期22卷 531-534页

作者： leila Zare Mohammad Nikpassand Department of Organic Chemistry Islamic Azad University-Rasht BranchRashtIran

Multicomponent synthesis of mono and bis 4-substituted-1,4-dihydropyridines from aldehydes,dimedone and ammonium acetate in the presence of an efficient recyclable catalyst,L-proline,in high yield and short reaction t... 详细信息

关键词： Multicomponent Dihydropyridines Dimedone L-Proline

Foraminiferal biostratigraphy of the Miocene Qom Formation, northwest of the Qom, Central Iran

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Frontiers of Earth Science 2018年第1期12卷 237-251页

作者： Jahanbakhsh DANESHIAN leila RAMEZANI DANA Geology Department Kharazmi University Tehran 15719-14911 Iran

Near Dochah, in the type area of the Qom Formation, Central Iran, the Miocene is partly developed in pelagic facies. From the 894.1 meter thick, ＇a to e＇ members of this section, 152 samples were collected. Abundant planktonic foraminifera let us correlate the study section with the global planktonic foraminifera biozonations. High diversity of foraminifera in the study section allow us to adapt the study succession to global biozonations. Twenty-seven genera and thirty-four species are reported for the first time from the Dochah section. First reports of Praeorbulina sicana and Praeorbulina transitoria in the upper part of this section led to recognition of the Praeorbulina sicana lower occurrence subzone （M5a） biozone with a late Late Burdigalian age.

关键词： biostratigraphy foraminifera Miocene Central Iron

Power Balance Consideration in the Design of Indirectly Driven Targets

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Plasma Science and Technology 2013年第6期15卷 506-510页

作者： Masoumi MAHBOOBEH Ghasemizad ABBAS Gholamzadeh leila Physics Department Faculty of ScienceGuilan University Physics Department Yazd University

A preliminary design for a heavy ion driver inertial fusion（HIDIF） target is presented. The effect of target material and dimensions on transfer efficiency and symmetrical irradiation in the hohlraum are *** analysis led to the evaluation of optimal target materials and dimensions to achieve a positive power balance of an ICF power *** results show that the best choice is a high Z material for cavity wall materials and a low Z material for the capsule *** is concluded that for achieving the highest transfer efficiency and best symmetrization we need an area ratio between 5≤A2/A1≤9.

关键词： heavy ion beam indirect drive transfer efficiency symmetrization

An overview of carbon nanotubes role in heavy metals removal from wastewater

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Frontiers of Chemical Science and Engineering 2019年第2期13卷 274-295页

作者： leila Ouni Ali Ramazani Saeid Taghavi Fardood Department of Chemistry University of ZanjanZanjanIran

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.

关键词： carbon nanotubes heavy metals removal water treatment