Int. J. Chemoinformatics Chem. Eng.最新文献

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Modeling of Fluid Interaction Produced by Water Hammer 水锤产生的流体相互作用模型
Int. J. Chemoinformatics Chem. Eng. Pub Date : 1900-01-01 DOI: 10.4018/ijcce.2011010103
K. Asli, Faig Bakhman Ogli Naghiyev, S. Aliyev, H. H. Asli
{"title":"Modeling of Fluid Interaction Produced by Water Hammer","authors":"K. Asli, Faig Bakhman Ogli Naghiyev, S. Aliyev, H. H. Asli","doi":"10.4018/ijcce.2011010103","DOIUrl":"https://doi.org/10.4018/ijcce.2011010103","url":null,"abstract":"This paper compares the computational performance of two numerical methods for two models of Transient Flow. One model was defined by method of the Eulerian based expressed in a method of characteristics “MOC†, finite difference form. The other model was defined by method of Regression. Each method was encoded into an existing hydraulic simulation model. Results indicated that the accuracy of the methods was comparable but that the “MOC†was more computationally efficient for analysis of large water transmission line. Practical investigations in this article have shown mainly this tendency.","PeriodicalId":132974,"journal":{"name":"Int. J. Chemoinformatics Chem. Eng.","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125423195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
A Quantitative Study on Simultaneous Effects of Governing Parameters in Electrospinning of Nanofibers using Modified Neural Network using Genetic Algorithm 基于遗传算法改进神经网络的纳米纤维静电纺丝控制参数同步效应定量研究
Int. J. Chemoinformatics Chem. Eng. Pub Date : 1900-01-01 DOI: 10.4018/IJCCE.2017010102
Shayan Seyedin, S. Maghsoodloo, V. Mottaghitalab
{"title":"A Quantitative Study on Simultaneous Effects of Governing Parameters in Electrospinning of Nanofibers using Modified Neural Network using Genetic Algorithm","authors":"Shayan Seyedin, S. Maghsoodloo, V. Mottaghitalab","doi":"10.4018/IJCCE.2017010102","DOIUrl":"https://doi.org/10.4018/IJCCE.2017010102","url":null,"abstract":"Inthisarticle,modifiedneuralnetworksusinggeneticalgorithmswereemployedtoinvestigatethe simultaneouseffectsoffourofthemostimportantparameters,namely;solutionconcentration(C); spinningdistance(d);appliedvoltage(V);andvolumeflowrate(Q)onmeanfiberdiameter(MFD), as well as standard deviation of fiber diameter (StdFD) in electrospinning of polyvinyl alcohol (PVA)nanofibers.Geneticalgorithmoptimizedneuralnetworks(GANN)wereusedformodeling theelectrospinningprocess.Theresultsindicatebetterexperimentalconditionsandmorepredictive abilityofGANNs.Therefore,theapproachofusinggeneticalgorithmstooptimizeneuralnetworksfor modelingtheelectrospinningprocesshasbeensuccessful.RSMcouldbeemployedwhenstatistical analysis,quantitativestudyoftheeffectsoftheparametersandvisualizationoftheresponsesurfaces areofinterest,whereasinthecaseofmodelingtheprocessandpredictingnewconditions,GANN isamorepowerfultoolandpresentsmoredesirableresults. KEywoRdS Electrospinning, Empirical Modeling, Genetic Algorithm Optimized Neural Networks (GANN), Response Surface Methodology","PeriodicalId":132974,"journal":{"name":"Int. J. Chemoinformatics Chem. Eng.","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115983788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Long Destruction of Structurally Damaged Composite Pipe 结构损伤复合管的长期破坏
Int. J. Chemoinformatics Chem. Eng. Pub Date : 1900-01-01 DOI: 10.4018/ijcce.2013010104
B. AkhundovMohammed, Sadayev Azber Sh.
{"title":"Long Destruction of Structurally Damaged Composite Pipe","authors":"B. AkhundovMohammed, Sadayev Azber Sh.","doi":"10.4018/ijcce.2013010104","DOIUrl":"https://doi.org/10.4018/ijcce.2013010104","url":null,"abstract":"Composite materials represent the important class of anisotropic materials. Unlike the previous works of authors in which estimations of long durability of an anisotropic pipe are given within the bounds of criterion of the destruction being generalization of the first theory of durability on the maximal stretching or compressing strain on the account of the process of damageability, in the given work the estimation of long durability is given within the bounds of the structural criterion of durability offered in work of one of the authors. According to him, destruction of a material is defined by the greatest level of the accumulated volume of damageability on some of proper stress-strain states. A problem in revealing stages of scattered destruction of an anisotropic pipe with the use of the simplified variant of criterion of durability, has been solved in the given work.","PeriodicalId":132974,"journal":{"name":"Int. J. Chemoinformatics Chem. Eng.","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121045260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
The Dispersion Effect of Carbon Nanotubes on the Viscoelastic Properties of Epoxy by Perez Model 碳纳米管分散对环氧树脂粘弹性性能的影响
Int. J. Chemoinformatics Chem. Eng. Pub Date : 1900-01-01 DOI: 10.4018/IJCCE.2017010101
A. Montazeri, M. Chitsazzadeh, R. Azad, Dorsa Madah
{"title":"The Dispersion Effect of Carbon Nanotubes on the Viscoelastic Properties of Epoxy by Perez Model","authors":"A. Montazeri, M. Chitsazzadeh, R. Azad, Dorsa Madah","doi":"10.4018/IJCCE.2017010101","DOIUrl":"https://doi.org/10.4018/IJCCE.2017010101","url":null,"abstract":"Thisarticledescribestheadditionofmulti-walledcarbonnanotubes(MWCNT)intotheepoxyaswell asdispersingmediaduringfabricationwereusedasfactorstoinvestigatetheviscoelasticproperties ofepoxy/MWCNTnanocomposite.Thequalityofthedispersionwasevaluatedthroughstudyingthe rheologicalandviscoelasticproperties.ThePerezmodelwasthenappliedtoanalyzetheviscoelastic behavior.Also,activationenergyoftheglasstransitionrelaxationwascalculated.Moreover,scanning electronmicroscopywasusedtocharacterizethedispersionstateofMWCNT.Theresultsshowed thatthebestrheologicalandviscoelasticpropertieswereobtainedfor1wt.%MWCNTdispersedin epoxyinthepresenceofsolvent. KEywoRDS Carbon Nanotubes, COLE-COLE Diagram, Dispersion Media, Nanocomposites, Perez Model, Viscoelastic","PeriodicalId":132974,"journal":{"name":"Int. J. Chemoinformatics Chem. Eng.","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130640493","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Theoretical Studies on the Structure and Spectroscopic Properties of 2, 4-D (2, 4-Diclorofenoxiacetic Acid) 2,4 - d(2,4 -二氯苯氧乙酸)结构与光谱性质的理论研究
Int. J. Chemoinformatics Chem. Eng. Pub Date : 1900-01-01 DOI: 10.4018/ijcce.2012010101
Mary Andino, Mariela I. Profeta, J. M. Romero, N. Jorge, E. Castro
{"title":"Theoretical Studies on the Structure and Spectroscopic Properties of 2, 4-D (2, 4-Diclorofenoxiacetic Acid)","authors":"Mary Andino, Mariela I. Profeta, J. M. Romero, N. Jorge, E. Castro","doi":"10.4018/ijcce.2012010101","DOIUrl":"https://doi.org/10.4018/ijcce.2012010101","url":null,"abstract":"The 2,4-dichlorophenoxyacetic acid (2,4-D) is applied to and recovered from the leaf surfaces of garden bean and corn plants. This paper examines the theoretical study of the 2,4-D IR and UV spectra as well as the determination of its optimized molecular structure. Theoretical calculations are performed at the density functional theory (DFT) levels. The different structural and electronic effects determining the molecular stability of the conformers are discussed in a comparative fashion. The optimized geometry was calculated via the B3LYP method with 6-311G(d,p) and 6-311++G(d,p) basis sets and the FT-IR spectra was calculated by the density functional B3LYP method with the 6-311++G(d,p) basis set. The scaled theoretical wavenumbers show good agreement with the experimental values. A detailed interpretation of the infrared spectra of 2,4-D is reported.","PeriodicalId":132974,"journal":{"name":"Int. J. Chemoinformatics Chem. Eng.","volume":"236 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134413461","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synthesis and Characterization of Chitosan-Poly Vinyl Alcohol-Graphene Oxide Nanocomposites 壳聚糖-聚乙烯醇-氧化石墨烯纳米复合材料的合成与表征
Int. J. Chemoinformatics Chem. Eng. Pub Date : 1900-01-01 DOI: 10.4018/IJCCE.2018010101
Fariba Saeedi, A. Montazeri, Y. Bahari, M. Pishvaee, M. Ranjbar
{"title":"Synthesis and Characterization of Chitosan-Poly Vinyl Alcohol-Graphene Oxide Nanocomposites","authors":"Fariba Saeedi, A. Montazeri, Y. Bahari, M. Pishvaee, M. Ranjbar","doi":"10.4018/IJCCE.2018010101","DOIUrl":"https://doi.org/10.4018/IJCCE.2018010101","url":null,"abstract":"Inthisarticle,nanocompositesbasedonChitosan(CS)/polyvinylalcohol(PVA)andgrapheneoxide (GO)nanoparticleswerepreparedbycastingthestableaqueousmixtureofthecomponentsinamold. The prepared nanocomposites were characterized using Fourier-transform infrared spectroscopy (FTIR),X-raydiffractions(XRD)andviscositymeasurement.ScanningElectronMicroscopy(SEM) resultsindicatedthattheGOwasuniformlydispersedinthepolymermatrix.Thewateruptakeability ofnanocompositesincreasedwithanincreasingthePVAcontent.While,theadditionofGOtoCS/ PVAleadtoadecreaseinthedegreeofwaterabsorption.Accordingtotherheologicalanalysisthe viscosityofthesamplesdecreasedwithincreasingtheGOweightpercentinCS/PVAmixture. KEywORdS Chitosan, Graphene Oxide, Nanocomposites, Viscosity Test, Water Uptake","PeriodicalId":132974,"journal":{"name":"Int. J. Chemoinformatics Chem. Eng.","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133704723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Preparation of a Uranium Conversion Plant's Nuclear Waste for Final Disposal by Means of Magnetically Assisted Chemical Separation 磁助化学分离法制备铀转化厂核废料的最终处理
Int. J. Chemoinformatics Chem. Eng. Pub Date : 1900-01-01 DOI: 10.4018/ijcce.2013010102
A. Ghaemi, Mehdi Maghsudi, Fatemeh Hanifpour, M. Samadfam
{"title":"Preparation of a Uranium Conversion Plant's Nuclear Waste for Final Disposal by Means of Magnetically Assisted Chemical Separation","authors":"A. Ghaemi, Mehdi Maghsudi, Fatemeh Hanifpour, M. Samadfam","doi":"10.4018/ijcce.2013010102","DOIUrl":"https://doi.org/10.4018/ijcce.2013010102","url":null,"abstract":"Uranium is separated from the raffinate of Isfahan's uranium conversion solvent extraction process by means of solvent coated magnetic nanoparticles. These particles were synthesized via chemical co-precipitation and were analyzed by XRD, TEM and TGA methods. The particles' surface were modified with D2EHPA and analyzed with FT-IR method. The results revealed that 0.5 M nitric acid and 25% w/w D2EHPA on nanoparticles gives the maximum uranium extraction yield. The raffinate of the solvent extraction plant can be disposed safely after its uranium content reduces to the allowable values.","PeriodicalId":132974,"journal":{"name":"Int. J. Chemoinformatics Chem. Eng.","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114867970","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Graph-Theoretical Indices based on Simple, General and Complete Graphs 基于简单图、一般图和完全图的图理论指标
Int. J. Chemoinformatics Chem. Eng. Pub Date : 1900-01-01 DOI: 10.4018/ijcce.2011010102
L. Pogliani
{"title":"Graph-Theoretical Indices based on Simple, General and Complete Graphs","authors":"L. Pogliani","doi":"10.4018/ijcce.2011010102","DOIUrl":"https://doi.org/10.4018/ijcce.2011010102","url":null,"abstract":"Valence molecular connectivity indices are based on the concept of valence delta, d v, that can be derived from general chemical graphs or chemical pseudographs. A general graph or pseudograph has multiple edges and loops and can be used to encode, through the valence delta, chemical entities. Two graph-theoretical concepts derived from chemical pseudographs are the intrinsic (I) and the electrotopological state (E) values, which are the used to define the valence delta of the pseudoconnectivity indices, ?I,S. Complete graphs encode, through a new valence delta, the core electrons of any atoms in a molecule. The connectivity indices, either valence connectivity or pseudoconnectivity, are the starting point to develop the dual connectivity indices. The dual indices show that not only can they assume negative values but also cover a wide range of numerical values. The central parameter of the molecular connectivity theory, the valence delta, defines a completely new set of connectivity indices, which can be distinguished by their configuration and advantageously used to model different properties and activities of compounds.","PeriodicalId":132974,"journal":{"name":"Int. J. Chemoinformatics Chem. Eng.","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134375729","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Extension of Ugi's Scheme for Model-Driven Classification of Chemical Reactions 化学反应模型驱动分类Ugi方案的扩展
Int. J. Chemoinformatics Chem. Eng. Pub Date : 1900-01-01 DOI: 10.4018/IJCCE.2015010103
Shyantani Maiti, Sanjay Ram, Somnath Pal
{"title":"Extension of Ugi's Scheme for Model-Driven Classification of Chemical Reactions","authors":"Shyantani Maiti, Sanjay Ram, Somnath Pal","doi":"10.4018/IJCCE.2015010103","DOIUrl":"https://doi.org/10.4018/IJCCE.2015010103","url":null,"abstract":"The first step to predict the outcome of a chemical reaction is to classify existing chemical reactions, on the basis of which possible outcome of unknown reaction can be predicted. There are two approaches for classification of chemical reactions: Model-Driven and Data-Driven. In model-driven approach, chemical structures are usually stored in a computer as molecular graphs. Such graphs can also be represented as matrices. The most preferred matrix representation to store molecular graph is Bond-Electron matrix BE-matrix. The Reaction matrix R-matrix of a chemical reaction can be obtained from the BE-matrices of educts and products was shown by Ugi and his co-workers. Ugi's Scheme comprises of 30 reaction classes according to which reactions can be classified, but in spite of such reaction classes there were several reactions which could not be classified. About 4000 reactions were studied in this work from The Chemical Thesaurus a chemical reaction database and accordingly 24 new classes have emerged which led to the extension of Ugi's Scheme. An efficient algorithm based on the extended Ugi's scheme have been developed for classification of chemical reactions. Reaction matrices being symmetric, matrix implementation of extended Ugi's scheme using conventional upper/lower tri-angular matrix is of On2 in terms of space complexity. Time complexity of similar matrix implementation is On2 in worst case. The authors' proposed algorithm uses two fixed size look-up tables in a novel way and requires constant space complexity. Worst case time complexity of their algorithm although still On2 but it outperforms conventional matrix implementation when number of atoms or components in the chemical reaction is 4 or more.","PeriodicalId":132974,"journal":{"name":"Int. J. Chemoinformatics Chem. Eng.","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123861049","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Systematics of Anomalies in the Filling of Electron Orbitals of Chemical Elements 化学元素电子轨道填充异常的系统分类
Int. J. Chemoinformatics Chem. Eng. Pub Date : 1900-01-01 DOI: 10.4018/IJCCE.2017010104
G. Zhizhin
{"title":"Systematics of Anomalies in the Filling of Electron Orbitals of Chemical Elements","authors":"G. Zhizhin","doi":"10.4018/IJCCE.2017010104","DOIUrl":"https://doi.org/10.4018/IJCCE.2017010104","url":null,"abstract":"Thisarticleexaminesthesystematizedanddefinedlawsofanomaliesinthefillingoftheelectronic orbitalsoftheperiodictableofchemicalelements.Theparticularsofthechemicalcompoundscaused bytheseanomalies investigated.It isshownthat thedeviationfromtheacceptedorderoffilling electronorbitalscontribute toanincreasein theactivityof theelements.Asaresult,amongthe anomalouselementsaresoimportantforuselementssuchascopper,silver,gold,platinum,uranium, andothers.Theanomalouselementsparticipatinginthecreationofcomplexchemicalcompounds leadtomoleculesofhigherdimension. KEywORdS Anomalies, Atom, Chemical Bond, Chemical Element, Electron, Energy Level, Molecule","PeriodicalId":132974,"journal":{"name":"Int. J. Chemoinformatics Chem. Eng.","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123886917","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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