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Microwave-Assisted Preparation of CdS Nanoparticles in a Halide-Free Ionic Liquid and Their Photocatalytic Activities

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催化学报 2011年第6期32卷 933-938页

作者： M.esmaili A.HABIBI-YANGJEH Department of Chemistry Faculty of ScienceUniversity of Mohaghegh Ardabili

A microwave-assisted (4-6 min) method was used for the preparation of CdS nanoparticles in 1-ethyl-3-methylimidazolium ethyl sulfate,a halide-free room-temperature ionic liquid (RTIL).The samples were characterized by powder X-ray diffraction,energy dispersive X-ray spectroscopy,and scanning electron *** reflectance spectra showed a 1.33 eV blue shift relative to bulk *** photocatalytic activities of the nanoparticles for photodegradation of methylene blue (MB) using UV and visible light were *** photodegradation of MB decreased with calcination *** order rate constants for the reaction under visible and UV irradiations over the nanoparticles prepared in the RTIL rich media were 5.4 and 2.5 higher,respectively,than the sample prepared in water.

关键词：固体超强碱氧化钙硝酸钾氧化铝氧化锆氢氧化钾硝酸钙

Full field reservoir modeling of shale assets using advanced data-driven analytics

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Geoscience Frontiers 2016年第1期7卷 11-20页

作者： Soodabeh esmaili Shahab D.Mohaghegh Asset Development Team North OperationCalifornia Resources CorporationCalifornia 90024USA West Virginia University 345-E Mineral Resources Bldg.P.O.Box 6070MorgantownWV 26506USA

Hydrocarbon production from shale has attracted much attention in the recent years. When applied to this prolific and hydrocarbon rich resource plays, our understanding of the complexities of the flow mechanism（sorption process and flow behavior in complex fracture systems- induced or natural） leaves much to be desired. In this paper, we present and discuss a novel approach to modeling, history matching of hydrocarbon production from a Marcellus shale asset in southwestern Pennsylvania using advanced data mining, pattern recognition and machine learning technologies. In this new approach instead of imposing our understanding of the flow mechanism, the impact of multi-stage hydraulic fractures, and the production process on the reservoir model, we allow the production history, well log, completion and hydraulic fracturing data to guide our model and determine its behavior. The uniqueness of this technology is that it incorporates the so-called ＂hard data＂ directly into the reservoir model, so that the model can be used to optimize the hydraulic fracture process. The ＂hard data＂ refers to field measurements during the hydraulic fracturing process such as fluid and proppant type and amount, injection pressure and rate as well as proppant concentration. This novel approach contrasts with the current industry focus on the use of ＂soft data＂（non-measured, interpretive data such as frac length, width,height and conductivity） in the reservoir models. The study focuses on a Marcellus shale asset that includes 135 wells with multiple pads, different landing targets, well length and reservoir properties. The full field history matching process was successfully completed using this data driven approach thus capturing the production behavior with acceptable accuracy for individual wells and for the entire asset.

关键词： Reservoir modeling Data driven reservoir modeling Top-down modeling Shale reservoir Modeling Shale

Photocatalytic degradation of methylene blue by nanostructured Fe/FeS powder under visible light

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International Journal of Minerals,Metallurgy and Materials 2018年第2期25卷 244-252页

作者： Hassan esmaili Amir Kotobi Saeed Sheibani Fereshteh Rashchi School of Metallurgy and Materials Engineering College of Engineering University of Tehran

The photocatalytic performance of mechano-thermally synthesized Fe/FeS nanostructures formed from micron-sized starting materials was compared with that of a thermally synthesized nanostructure with nano-sized precursors in this paper. The properties of as-synthesized materials were studied by X-ray diffraction（XRD）, transmission electron microscopy（TEM）, vibrating sample magnetometry（VSM）, diffuse reflectance spectroscopy（DRS）, and ultraviolet–visible（UV-Vis） spectroscopy. The effects of irradiation time, methylene blue（MB） concentration, catalyst dosage, and p H value upon the degradation of MB were studied. Magnetic properties of the samples showed that both as-synthesized Fe/FeS photocatalysts are magnetically recoverable, eliminating the need for conventional filtration steps. Degradation of 5 ppm of the MB solution by mechano-thermally synthesized Fe/FeS with a photocatalyst dosage of 1 kg/m^3 at pH 11 can reach 96% after 12 ks irradiation under visible light. The photocatalytic efficiency is higher in alkaline solution. The kinetics of photocatalytic degradation in both samples is controlled by a first-order reaction. However, the rate-constant value in the thermally synthesized Fe/FeS photocatalyst sample is only 1.5 times greater than that of the mechano-thermally synthesized one.

关键词： photocatalytic degradation iron sulfide nanoparticles kinetics methylene blue visible light

Mechano-thermal synthesis and characterization of nano-structured Fe/FeS for application in photocatalysis

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Particuology 2018年第2期16卷 72-80页

作者： H. esmaili S. Sheibani F. Rashchi School of Metallurgy and Materials Engineering College of Engineering University of Tehran Tehran 11155-4563 Iran

A novel method was used to prepare a nano-structured 32 wt% Fe/FeS core/shell powder via a mechanothermal route by l-h heat treatment of a mechanically activated powder mixture of Fe and S. The structural and microstructural characteristics, formation mechanism, magnetic properties, and photocatalytic activity of the powder were studied by X-ray diffraction, field emission scanning electron microscopy, transmission electron microscopy, surface area analysis, differential scanning calorimetry, vibrating sample magnetometry, and UV-vis spectrophotometry. A detailed study of the mechanism of transformation showed that during the heat treatment process, an FeS2 phase was formed as the intermediate product. In the final product, an FeS shell approximately 2 nm in thickness was formed on the Fe core. In the presence of NaCI as a process control agent, the particle size decreased and the size distribution became more uniform. Mechanical activation and NaCI addition together led to a decrease of the saturation magnetization from 82 to 74emu/g. The photocatalytic activity of the powder in the degradation of methylene blue was 50%.

关键词： Fe/FeS Core-shell Mechano-therma Nano-structure Photocatalyst

Analysis of channel bank erosion rate using exposed roots of trees: a case study of lavij stream, northern Alborz Mountains, Iran

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Journal of Mountain Science 2020年第5期17卷 1096-1105页

作者： Mohammad Mehdi HOSSEINZADEH Saeedeh MATSH BEYRANVAND Reza esmaili Physical Geography Department Earth Science FacultyShahid Beheshti UniversityTehran19839-69411Iran Geography Department Faculty of Humanities and Social SciencesUniversity of MazandaranBabolsar47416-13534Iran

Powerful alluvial rivers in the northern Alborz mountain ranges erode river banks due to having high *** of these rivers flow in forest *** this research,the rate of the river bank erosion was examined using the exposed roots of the *** this purpose,8 reaches of Lavij Stream were *** determine the first year of root exposure,two sets of macroscopic and microscopic indicators were ***,the rate of the stream bank erosion was *** results were analyzed by using statistical test,which showed insignificant differences between the two groups of *** to its more abundance(frequency)on the margins and easy detection of its root through the exposure(macroscopic and microscopic)indicators,Alnus glutinosa(black alder)species could be more easily and accurately analyzed as compared with any other tree species in the *** mean erosion rate of the riverbank using the extruded roots was estimated to be 0.08 m/*** hydrological analyses of flood flows showed that 95%of Lavij Stream bank erosion was caused by the river bank full discharges with a return period of 1-3 years.

关键词： Dendrogeomorphology Stream bank erosion Exposed tree root Alborz Mountain

A Review of Machine Learning and Algorithmic Methods for Protein Phosphorylation Site Prediction

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Genomics, Proteomics & Bioinformatics 2023年第6期21卷 1266-1285页

作者： Farzaneh esmaili Mahdi Pourmirzaei Shahin Ramazi Seyedehsamaneh Shojaeilangari Elham Yavari Department of Information Technology Tarbiat Modares UniversityTehran 14115-111Iran Department of Biophysics Faculty of Biological SciencesTarbiat Modares UniversityTehran 14115-111Iran Biomedical Engineering Group Department of Electrical Engineering and Information TechnologyIranian Research Organization for Science and Technology(IROST)Tehran 33535-111Iran

Post-translational modifications(PTMs)have key roles in extending the functional diversity of proteins and,as a result,regulating diverse cellular processes in prokaryotic and eukaryotic *** modification is a vital PTM that occurs in most proteins and plays a significant role in many biological *** in the phosphorylation process lead to multiple diseases,including neurological disorders and *** purpose of this review is to organize this body of knowledge associated with phosphorylation site(p-site)prediction to facilitate future research in this *** first,we comprehensively review all related databases and introduce all steps regarding dataset creation,data preprocessing,and method evaluation in p-site ***,we investigate p-site prediction methods,which are divided into two computational groups:algorithmic and machine learning(ML).Additionally,it is shown that there are basically two main approaches for p-site prediction by ML:conventional and end-to-end deep learning methods,both of which are given an ***,this review introduces the most important feature extraction techniques,which have mostly been used in p-site ***,we create three test sets from new proteins related to the released version of the database of protein post-translational modifications(dbPTM)in 2022 based on general and human *** online p-site prediction tools on newly added proteins introduced in the dbPTM 2022 release,distinct from those in the dbPTM 2019 release,reveals their *** other words,the actual performance of these online p-site prediction tools on unseen proteins is notably lower than the results reported in their respective research pape.

关键词： Phosphorylation Machinelearning Deep learning Post-translational modification Database

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Sound & Vibration 2019年第6期53卷 263-276页

作者： Jahede Tekeykhah Seyed Mohsen Hosseini Gholamali Jalali Jalil Alavi Abbas esmaili Sari Forestry Department Natural Resources and Marine Sciences FacultyTarbiat Modares UniversityNoorMazandaranIran Faculty of Natural Resources Tarbiat Modares UniversityNoorMazandaranIran Associate Professor of Forestry Department Tarbiat Modares UniversityNoorMazandaranIran Forestry Department Tarbiat Modares UniversityNoorMazandaranIran Department of Environmental Science Tarbiat Modares UniversityNoorMazandaranIran

Sound pollution is one of the most important urban problems which endangers mental and physical health of the *** study was aimed to assess the influence of different tree species,including Fraxinus rotundifolia,Robinia pseudoacacia,Platanus orientalis,Platycladus orientalis,and Pinus eldarica,in reducing noise pollution in the Abidar Forest Park.A further objective was to identify the contaminated areas of Sanandaj city and to propose suitable noise absorbent tree species in consistent *** each tree stands the noise measurements were performed during intervals at frequencies of 250,500 and 1000 Hz,besides an open area with the same *** regards to the second purpose,a total of 50 stations with residential,commercial,residentialcommercial,and green space applications were selected across the *** Continuous Sound Pressure Level(Leq)was determined in five replicates for 30 *** measurements were performed under stable weather conditions and low wind velocity at 17:00(traffic peak)in summer and *** of the Leq values were above the threshold noise *** highest noise reduction was recorded in summer(i.e.,green season);Platanus and Platycladus species demonstrated the highest and lowest noise absorption(31.43 dB and 22.28 dB,respectively).Furthermore,a meaningful difference was observed between Leq values of commercial,residential,commercial-residential,and green space urban applications,and the central parts of the city showed noticeable noise *** together,due to being exposed to higher than the acceptable threshold noise level,the residents of Sanandaj will be endangered to health problems in the near future;thus consideration should be given to the noise pollution sources.

关键词： Urban green space noise attenuation Abidar Forest Park

Structure, formation, and decay of ■NN system by Faddeev-AGS calculations

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Chinese Physics C 2019年第6期43卷 21-31页

作者： S.Marri S.Z.Kalantari J.esmaili Department of Physics Isfahan University of TechnologyIsfahan 84156-83111Iran Department of Physics Faculty of Basic Sciences Shahrekord UniversityShahrekord115Iran

The Faddeev AGS equations for the coupled-channels ■NN-πΣN system with quantum numbers I=1/2 and S=0 are solved. Using separable potentials for the ■N-πΣ interaction, we calculate the transition probability for the(YK)I=0 + N→πΣN reaction. The possibility to observe the trace of the K-pp quasi-bound state in πΣN mass spectra was studied. Various types of chiral-based and phenomenological potentials are used to describe the ■N-πΣ interaction. Finally, we show that we can observe the signature of the K-pp quasi-bound state in the mass spectra, as well as the trace of branch points in the observables.

关键词： Faddeev method ■N interaction K^-pp system quasi-bound state

Study on the Effect of Preparation Parameters of K2CO3/Al2O3Sorbent on CO2Capture Capacity at Flue Gas Operating Conditions

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Journal of Encapsulation and Adsorption Sciences 2013年第2期3卷 57-63页

作者： Javad esmaili Mohammad Reza Ehsani Department of Chemical Engineering Isfahan University of Technology Isfahan Iran

In this paper, study on the effect of preparation conditions of K2CO3/Al2O3 sorbent was done. Box-Behnken design was applied to study the influence of four parameters involve initial solution concentration, impregnation time and calcination step temperature and time. A quadratic model was used to correlate the sorbent capture capacity. The model was used to calculate the optimum conditions for preparing sorbent. From the analysis of variance (ANOVA), the most influential factor on each experimental design response was identified. The potassium-based sorbents used in this study were prepared by impregnating K2CO3 on Al2O3 support. The CO2 capture capacity was measured in the presence of H2O in a fixed-bed reactor at CO2 capture temperature of 60°C using breakthrough curves. The optimum sorbent prepared by this method showed CO2 capture capacity of 77.21 mg CO2/g sorbent. It was observed that the experimental values obtained were in good agreement with the values predicted by the model, with relatively small errors between the predicted and the actual values. The results obtained in this study can be used as basic data for study on design and operating condition optimization of CO2 capture process using these sorbents.

关键词： CO2 Capture K2CO3/Al2O3 Sorbent Response Surface Method Box-Behnken Design