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Stripping voltammetric determination of Cd(Ⅱ)based on multiwalled carbon nanotube functionalized with 1-(2-pyridylazo)-2-naphthol

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Chinese Chemical Letters 2011年第12期22卷 1469-1472页

作者： Alireza Mohadesi hadi Beitollahi Mohammad Ali Karimi Department of Chemistry Payame Noor UniversityTehran 19395-4697Iran Department of Chemistry Payame Noor University(PNU)P.O.Box 76175-559KermanIran Environmental Department Research Institute of Environmental SciencesInternational Center for SciencesHigh Technology and Environmental SciencesKermanIran Department of Chemistry & Nanoscience and Nanotechnology Research Laboratory(NNRL) Payame Noor University(PNU)SirjanIran

The present work has focused on the modification of multiwalled carbon nanotube with a ligand,l-（2-pyridylazo）-2-naphthol, and its potential application for the development of a new,simple and selective modified glassy carbon electrode for stripping voltammetric determination of Cd（Ⅱ）.The analytical curve for Cd（Ⅱ） ions covered the linear range varying from 0.8 up to 220.4μgL^（-1）.The limit of detection was found to be 0.1μgL^（-1）,while the relative standard deviation（RSD） at 50.0μgL^（-1） was 1.8%（n=5）.This modified electrode was successfully applied for determination of Cd（Ⅱ） in some water samples.

关键词： Multiwalled carbon nanotube 1-(2-Pyridylazo)-2-naphthol Cadmium(Ⅱ) Stripping voltammetry

Chemical constituents and fumigant toxicity of essential oil from Carum copticum against two stored product beetles

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Insect Science 2007年第3期14卷 213-218页

作者： BIBI ZAHRA SAHAF SAEID MOHARRAMIPOUR MOHAMMAD hadi MESHKATALSADAT Department of Entomology College of Agriculture Tarbiat Modares University Tehran Department of Chemistry Faculty of Basic Science Lorestan University Khoramabad Iran

Plant secondary metabolites play an important role in plant-insect interactions and therefore such compounds may have insecticidal or antifeedant activity against insects. Carum copticum C. B. Clarke （Apiaceae） is one of these plants that have medicinal effects on humans. The chemical composition of the essential oil from dry seeds of C. copticum was studied by gas chromatography （GC） and gas chromatography mass spectrometry （GC-MS）. Thymol （41.34%）,α-terpinolene （17.46%） and ρ-cymene （11.76%） were found to be the major constituents of the oil. In fumigant toxicity tests with the essential oil against adults of Sitophilus oryzae （L.） and Tribolium castaneum （Herbst） at 27 ±1℃ and 60% ± 5% RH, it was observed that S. oryzae （LC50 = 0.91 μL/L） were significantly susceptible than T. castaneum （LC50 = 33.14 μL/L）. The mortalities of the insect species reached 100% at concentrations higher than 185.2 μL/L and 12-h exposure time. The findings indicate the strong insecticidal activity of C. copticum oil and its potential role as a fumigant for storedproduct insects.

关键词： Carum copticum essential oil fumigant toxicity Sitophilus oryzae Tribolium castaneum

Mine production index(MPI)-extension of OEE for bottleneck detection in mining

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International Journal of Mining Science and Technology 2016年第5期26卷 753-760页

作者： Amol Arun Lanke Seyed hadi Hoseinie Behzad Ghodrati Division of Operation and Maintenance Engineering Lule? University of Technology

Although mining production depends on various equipments, significant amount of production loss can be attributed a specific equipment or fleet. Bottleneck is defined not only by production loss but also by our satisfaction from the equipment. The user satisfaction could be measured as machine *** literatures on performance improvement and optimization of equipment operations assert importance of availability, utilization and production performance as key parameters. These three parameters are useful for evaluating effectiveness of equipment. Mine production index(MPI), which can represent the effect of these factors, has been applied for continuous operation in mining. MPI uses Fuzzy Delphi Analytical Hierarchy Process to determine importance of each three parameter for individual equipment. A case study in a Swedish open pit mine was done to evaluate the field application of *** results reveal that crusher is the bottleneck equipment in studied mine. As a methodical approach,an algorithm which uses MPI and detects bottleneck in continuous mining operation has been proposed.

关键词： Mine production index Bottleneck seeking FDAHP Production analysis

Investigations on the relationship among the porosity,permeability and pore throat size of transition zone samples in carbonate reservoirs using multiple regression analysis,artificial neural network and adaptive neuro-fuzzy interface system

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Petroleum Research 2021年第4期6卷 321-332页

作者： Jamiu Oyekan Adegbite hadi Belhaj Achinta Bera Petroleum Engineering Department Khalifa UniversityAbu DhabiUnited Arab Emirates Drilling Cementingand Stimulation Research CenterSchool of Petroleum TechnologyPandit Deendayal Energy UniversityGandhinagarGujarat382007India

Finding an accurate method for estimating permeability aside from well logs has been a difficult task for many *** most commonly used methods targeted towards regression technique to understand the correlation between pore throat radii,porosity and permeability are Winland and Pittman equation *** these methods are very common among petrophysicists,they do not give a good prediction in certain ***,this paper investigates the relationship among porosity,permeability,and pore throat radii using three methods such as multiple regression analysis,artificial neural network(ANN),and adaptive neuro-fuzzy inference system(ANFIS)for application in transition zone permeability ***,a comprehensive mercury injection capillary pressure(MICP)test was conducted using 228 transition zone carbonate core samples from a field located in the Middle-East *** regression analysis was later performed to estimate the permeability using pore throat and porosity *** the ANN,a two-layer feed-forward neural network with sigmoid hidden neurons and a linear output neuron was *** technique involves training,validation,and testing of input/output ***,for the ANFIS method,a hybrid optimization consisting of least-square and backpropagation gradient descent methods with a subtractive clustering technique was *** ANFIS combines both the artificial neural network and fuzzy logic inference system(FIS)for the training,validation,and testing of input/output *** results show that the best correlation for the multiple regression technique is achieved for pore throat radii with 35%mercury saturation(R35).However,for both the ANN and ANFIS techniques,pore throat radii with 55%mercury saturation(R55)gives the best *** the ANN and ANFIS are later found to be more effective and efficient and thus recommended as compared with the multiple regression technique commonly used in the industry.

关键词： Multiple regression analysis Artificial neural network Adaptive neuro-fuzzy interface system Permeability and porosity Pore throat Mercury injection capillary pressure

Synthesis,characterization and antioxidant activities of highly functionahzed cyclopentadienes catalyzed by ZnO-nanorod as economic and efficient heterogeneous nano catalyst

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Chinese Chemical Letters 2017年第2期28卷 274-279页

作者： hadi Sajjadi-Ghotbabadi Shahrzad Javanshir Faramarz Rostami-Charati Heterocyclic Chemistry Research Laboratory Department of Chemistry Iran University of Science and Technology Tehran 16846-13114 Iran Department of Chemistry Faculty of Science Gonbad Kavous University P.O. Box 163 Gonbad Iran

A three-component condensation was applied for the preparation of cyclopentadiene derivatives through the reaction of primary amines,alkyl propiolate and dialkyl acetylenedicarboxylate in the presence of catalytic amount of ZnO-nanorods（Zn-NR） under solvent-free conditions at 50 ℃.The method has proved to be synthetically green,simple,and effective with high atom economy and *** catalyst also revealed significant ***,the antioxidant activity and free radical scavenging capacity of the newly synthesized derivatives 4a,4b,4c,and 4d was screened using free radical scavenging 2,2-diphenyl-1-picrylhydrazyl（DPPH） and ferric reducing antioxidant power（FRAP）assays and compared with hydroxytoluene（BHT） and tert-butylhydroquinone（TBHQ）.These compounds do not exhibit good DPPH radical scavenging,but they have a desirable FRAP.

关键词： ZnO nanorod Cyclopentadiene Antioxidant activity Methyl propiolate Multi-component reaction

Homogeneous and nanomolar detection of hydrazine by indigocarmine as a mediator at the surface of TiO_2 nanoparticles modified carbon paste electrode

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Chinese Chemical Letters 2012年第2期23卷 213-216页

作者： Mohammad Mazloum-Ardakani Hossein Rajabi hadi Beitollahi Department of Chemistry Faculty of ScienceYazd UniversityYazd 89195-741Iran Department of Chemistry Faculty of ScienceYazd UniversityYazd 89195-741Iran Environment Department Research Institute of Environmental SciencesInternational Center for ScienceHigh Technology & Environmental SciencesKermanIran

The homogeneous electrocatalytic oxidation of hydrazine（HZ） has been studied by indigocarmine（IND） as a mediator at the surface of TiO_2 nanoparticles modified carbon paste electrode（TNMCPE）.Cyclic voltammetry was used to study the electrochemical behavior of IND at different scan *** voltammetric response of the modified electrode was linear against the concentration of HZ in the ranges of 3.0×l0^（-8）-7.0×10~6 mol/L with differential pulse voltammetry *** detection limit（3σ） was determined as 27.3 nmol/*** evaluate the applicability of the proposed method to real samples,the modified CPE was applied to the determination of HZ in water samples.

关键词： Hydrazine Indigocarmine TiO_2 nanoparticles Modified electrode Carbon paste electrode Nanomolar detection

A locality-based replication manager for data cloud

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Frontiers of Information Technology & Electronic Engineering 2016年第12期17卷 1275-1286页

作者： Reza SOOKHTSARAEI Javad ARTIN Ali GHORBANI Ahmad FARAAHI hadi ADINEH Department of Computer Engineering and Information Technology Payame Noor University Tehran Iran Department of Industrial Engineering Faculty of Engineering Maziar University Noor Iran

Efficient data management is a key issue for environments distributed on a large scale such as the data cloud. This can be taken into account by replicating the data. The replication of data reduces the time of service and the delay in availability, increases the availability, and optimizes the distribution of load in the system. It is worth mentioning, however, that with the replication of data, the use of resources and energy increases due to the storing of copies of the data. We suggest a replication manager that decreases the cost of using resources, energy, and the delay in the system, and also increases the availability of the system. To reach this aim, the suggested replication manager, called the locality replication manager （LRM）, works by using two important algorithms that use the physical adjacency feature of blocks. In addition, a set of simulations are reported to show that LRM can be a suitable option for distributed systems as it uses less energy and resources, optimizes the distribution of load, and has more availability and less delay.

关键词： Data cloud Replication Graph Locality replication manager (LRM)

Empirical Likelihood Ratio-Based Goodness-of-Fit Test for the Laplace Distribution

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Communications in Mathematics and Statistics 2016年第4期4卷 459-471页

作者： hadi Alizadeh Noughabi Department of Statistics University of BirjandBirjandIran

The Laplace distribution can be compared against the normal *** Laplace distribution has an unusual,symmetric shape with a sharp peak and tailsthat are longer than the tails of a normal *** has recently become quitepopular in modeling financial variables(Brownian Laplace motion)like stock returnsbecause of the greater *** Laplace distribution is very extensively reviewed in themonograph(Kotz et *** the laplace distribution and generalizations-a revisit withapplications to communications,economics,engineering,and ***,Boston,2001).In this article,we propose a density-based empirical likelihood ratio(DBELR)goodness-of-fit test statistic for the Laplace *** test statisticis constructed based on the approach proposed by Vexler and Gurevich(Comput StatData Anal 54:531-545,2010).In order to compute the test statistic,parameters of theLaplace distribution are estimated by the maximum likelihood *** valuesand power values of the proposed test are obtained by Monte Carlo ***,power comparisons of the proposed test with some known competing tests are ***,two illustrative examples are presented and analyzed.

关键词： Likelihood ratio Laplace distribution Density-based empiricallikelihood ratio Goodness-of-fit test Monte Carlo simulation Power study

Numerical Solution of the Distributed-Order Fractional Bagley-Torvik Equation

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IEEE/CAA Journal of Automatica Sinica 2019年第3期6卷 760-765页

作者： Hossein Aminikhah Amir Hosein Refahi Sheikhani Tahereh Houlari hadi Rezazadeh the Department of Applied Mathematics Faculty of Mathematical Sciences University of Guilan the Department of Applied Mathematics Faculty of Mathematical Sciences Islamic Azad University Lahijan Branch the Faculty of Engineering Technology Amol University of Special Modern Technologies Department of Applied Mathematics University of Guilan

In this paper, two numerical methods are proposed for solving distributed-order fractional Bagley-Torvik *** equation is used in modeling the motion of a rigid plate immersed in a Newtonian fluid with respect to the nonnegative density function. Using the composite Boole's rule the distributedorder Bagley-Torvik equation is approximated by a multi-term time-fractional equation, which is then solved by the GrunwaldLetnikov method(GLM) and the fractional differential transform method(FDTM). Finally, we compared our results with the exact results of some cases and show the excellent agreement between the approximate result and the exact solution.

关键词： Bagley-Torvik equation distributed-order fractional fractional differential transform method Grunwald- Letnikov method