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Chinese Physics B 2013年第8期22卷 421-428页

作者： M K Tavassoly h r jalali Atomic and Molecular Group Faculty of Physics Yazd UniversityYazd Iran Photonics research Group Engineering Research Center Yazd UniversityYazd Iran The Laboratory of Quantum Information Processing Yazd UniversityYazd Iran

In this paper we try to introduce the ladder operators associated with the pseudoharmonic oscillator, after solving the corresponding Schrrdinger equation by using the factorization method. The obtained generalized raising and lowering operators naturally lead us to the Dirac representation space of the system which is much easier to work with, in comparison to the functional hilbert space. The SU（1, 1） dynamical symmetry group associated with the considered system is exactly established through investigating the fact that the deduced operators satisfy appropriate commutation relations. This result enables us to construct two important and distinct classes of Barut-Girardello and Gilmore-Perelomov coherent states associated with the system. Finally, their identities as the most important task are exactly resolved and some of their nonclassical properties are illustrated, numerically.

关键词： pseudoharmonic oscillator factorization method Barut-Girardello coherent states Gilmore-Perelomov coherent states nonclassical properties

Warped time lens in temporal imaging for optical real-time data compression

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Chinese Science Bulletin 2014年第22期59卷 2649-2654页

作者： Mohammad h.Asghari Bahram jalali Department of Electrical Engineering University of California Los Angeles CA 90095 USA Department of Bioengineering University of CaliforniaLos Angeles CA 90095 USA Department of Surgery David Geffen School of MedicineUniversity of California Los Angeles CA 90095 USA

We introduce for the first time the concept of anamorphic temporal imaging and its application to analog data compression in a time *** in front of a conventional spectrometer,this technique enhances the spectral resolution and the update *** importantly,it performs real-time optical data compression to reduce the volume of the generated digital *** technique introduces the concept of the warped time *** show that a specific class of warped time-to-frequency mapping operations combined with the nonlinear operation inherent in a photo-detector compresses the time-bandwidth product in a temporal imaging *** employ our newly introduced Stretched Modulation Distribution to design the warp *** this method,the narrow spectral features beyond the spectrometer resolution can be captured and at the same time the output bandwidth and hence the record length is *** reduction in the record length results in higher update rate for the spectrometer without sacrificing the spectral resolution or *** method also benefits from amplitude and phase detection to recover the input complex-field *** compressing the time-bandwidth product,anamorphictemporal imaging addresses the Big Data problem in such high-throughput instruments.

关键词：数据压缩成像系统扭曲实时光学光谱分辨率时间带宽积变形时间

Multivariate Statistical Analysis of Potassium Status in Agricultural Soils in hamadan,Western Iran

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Pedosphere 2010年第3期20卷 293-303页

作者： M. jalali Department of Soil Science College of AgricultureBu-Ali Sina University

Multivariate statistical technique was used to determine the potassium （K＋） status and to assess soil fertility and K leaching potential in some calcareous soils. Water-soluble K＋（h20-K） and ammonium acetate-extractable K＋（NhaOAc- K） ranged from 0.019 to 0.590 （mean value 0.095） and 0.390 to 3.320 （mean value 0.954） cmolc kg-1, respectively. The nitric acid-extractable K＋（hNO3-K） varied from 1.03 to 13.63 （mean value 5.37） cmolc kg-1. The proportion of h20-K ranged from 0.34% to 14.8% of hNO3-K, and 2.2% to 53.2% of NhaOAc-K. The proportion of NhaOAc-K ranged from 5.8% to 80% of hNO3-K （mean value 23% of hNOa-K）. The tendency of the soil to lose K＋ by leaching was examined by determining K＋-Ca2＋ exchange isotherms. The soils mostly had moderate to high values of K＋ sorption capacity, ranging from 10% to 58% （mean value 28%） of added K＋. The Gapon coefficient varied widely from 1.1 to 12.0 （L mol-1）-1/2. Clay minerals were dominated by illite, smectites and vermiculite with small amounts of kaolinite. Principal component analysis （PCA） showed that the first four components accounted for 27.7%, 21.4%, 13.8%, and 8.9% of total variation, respectively. The non-hierarchical cluster analysis （k-means clustering） grouped 75 sampling sites into six clusters, based on the similarity of soil quality characteristics. The results suggested that such classes could form a basis for variable-rate application to maintain an adequate K＋ status for crop production and to reduce potential K＋ loss from soil by leaching.

关键词： adsorption Gapon coefficient leaching non-exchangeable potassium principal component analysis

Prediction of vertical displacement for a buried pipeline subjected to normal fault using a hybrid FEM-ANN approach

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Frontiers of Structural and Civil Engineering 2024年第3期18卷 428-443页

作者： hedye jalali reza YEGANEh KhAKSAr Danial MOhAMMADZADEh S. Nader KArBALLAEEZADEh Amir h.GANDOMI Department of Civil Engineering Architecture and UrbanismSadjad University of TechnologyPO Box ***MashhadIran Department of Civil Engineering Faculty of EngineeringEqbal Lahoori Institute of Higher EducationPO Box ***MashhadIran Faculty of Civil Engineering Architectureand ArtScience and Research Branch of Islamic Azad UniversityPO Box ***TehranIran Faculty of Engineering&Information Technology University of Technology SydneyUltimoNSW 2007Australia University research and Innovation Center(EKIK) Óbuda UniversityBudapest 1034Hungary

Fault movement during earthquakes is a geotechnical phenomenon threatening buried pipelines and with the potential to cause severe damage to critical ***,effective prediction of pipe displacement is crucial for preventive management *** study aims to develop a fast,hybrid model for predicting vertical displacement of pipe networks when they experience *** this study,the complex behavior of soil and a buried pipeline system subjected to a normal fault is analyzed by using an artificial neural network(ANN)to generate predictions the behavior of the soil when different parameters of it are *** this purpose,a finite element model is developed for a pipeline subjected to normal fault *** data bank used for training the ANN includes all the critical soil parameters(cohesion,internal friction angle,Young’s modulus,and faulting).Furthermore,a mathematical formula is presented,based on biases and weights of the ANN *** results show that the maximum error of the presented formula is 2.03%,which makes the proposed technique efficiently predict the vertical displacement of buried pipelines and hence,helps to optimize the upcoming pipeline projects.

关键词： buried pipelines normal Fault finite element method multilayer perceptron neural network formulation

Tracer advection in an idealised river bend with groynes

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Journal of hydrodynamics 2018年第5期30卷 780-790页

作者： Mohammad Mahdi jalali Alistair G.L.Borthwick Institute for Energy Systems School of Engineering The University of Edinburgh

This paper presents numerical simulations of particle advection in the bend of an open channel containing groynes, which is an idealised form of a shallow river bend in a wide river. The flow field is computed using a boundary-fitted solver of the non-orthogonal, curvilinear shallow water equations. The computational grid is generated by solving Poisson-type elliptic partial differential equations using an iterative multi-grid scheme for prescribed boundary coordinates. The shallow water equations are discretised with finite differences in space, and 4 t h order runge-Kutta integration in time. Tracers introduced at specific initial locations have their trajectories computed using Lagrangian particle tracking. The numerical shallow flow model is verified by comparison to the analytical solution of fully developed flow in an open channel. The combined shallow flow and Lagrangian particle-tracking model is then used to simulate the advection of tracer particles in a rectangular channel containing a pair of parallel groynes, and tracer particles in a curved open channel containing groynes, of dimensions roughly equivalent to a Danube river bend.

关键词： Shallow water equations tracer advection Lagrangian particle curvilinear coordinates system river bend groynes

Unveiling the influence of dendrite characteristics on the slip/twinning activity and the strain hardening capacity of Mg-Sn-Li-Zn cast alloys

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Journal of Magnesium and Alloys 2023年第1期11卷 329-347页

作者： MS.jalali A.Zarei-hanzaki M.Mosayebi h.r.Abedi M.Malekan M.Kahnooji E.Farabi Su-hyeon Kim hot Deformation and Thermomechanical Processing Laboratory of high Performance Engineering Materials School of Metallurgy and Materials EngineeringCollege of EngineeringUniversity of TehranTehranIran Materials Science and Engineering Department McMaster University1280 Main Street WestHamiltonON L8S 4L8Canada School of Metallurgy&Materials Engineering Iran University of Science and Technology(IUST)TehranIran Institute for Frontier Materials Deakin UniversityGeelongVictoria 3216Australia Korea Institute of Materials Science(KIMS) 797 ChangwondaeroSeongsanguChangwonGyeongnam 51508Republic of Korea

This work explores the correlation between the characteristics of the cast structure(dendrite growth pattern,dendrite morphology and macro-texture)and strain hardening capacity during high temperature deformation of Mg-5Sn-0.3Li-0 and 3Zn multi-component *** three dimensional(3D)morphology of the dendrite structure demonstrates the transition of the growth directions from,andtoanddue to the addition of *** simultaneous effects of growing tendency and the decrement of dendrite coarsening rate at the solidification interval lead to dendrite morphology transition from the globular-like to the hyper-branch *** morphology transition results in the variation of the solidification macro-texture,which has effectively influenced the dominant deformation mechanisms(slip/twin activity).The higher activity of the slip systems increases the tendency of the dendrite arms for bending along the deformation direction and *** from this,the dendrite holding hyper-branch structure with an average thickness below 20μm are more favorable for *** dendrite fragmentation leads to considerable softening fractions,and as an effective strain compensation mechanism increases the workability of dendritic structure.

关键词： Magnesium alloys Dendrite orientation selection Solidification texture Dendrite fragmentation 3-D tomography analysis Thermomechanical processing

Effects of Common Ions on Zn Sorption in Some Calcareous Soils of Western Iran

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Pedosphere 2012年第2期22卷 190-200页

作者： M.jalali N.AhMADI MOhAMMAD ZINLI Department of Soil Science College of AgricultureBu-Ali Sina University

Zinc （Zn） is essential to plant growth and relatively mobile in soils. This study was conducted to assess the effect of common ions （Ca2＋, K＋, Na＋, Nh＋, CI-, NO3-, and h2PO4） on sorption of Zn in surface samples of ten calcareous soils from western Iran using 10 mmol L-1 KC1, KNO3, Kh2P04, Ca（N03）2, NAN03, and Nh4N03 solutions as background electrolytes. The results indicated that both Nh＋, K＋, and Ca2＋ equally decreased Zn sorption as compared to Na＋. Zinc sorption was decreased by h2PO4- as compared to NO3 and Cl-. The Langmuir and Freundlich equations fitted closely to the sorption data of all ions. The Langmuir maximum, bonding energy constant, and Freundlich distribution coefficient for Zn sorption differed among the various ionic background electrolytes. Langmuir sorption parameters showed that the presence of h2PO4- decreased the maximum Zn adsorbed, but increased the bonding energy. Although K＋ and Nh＋ equally influenced maximum Zn adsorbed, they differed in their effect on the distribution coefficient of Zn in soils. Values of saturation index calculated using Visual MINTEQ indicated that at the low Zn concentration, Zn solubility was controlled by sorption reactions and at the high Zn concentration, it was mainly controlled by sorption and mineral precipitation reactions, such as precipitation of Zn3（PO4）2.4h2O, Zn5（Oh）6（CO3）2, and ZnCO3. For most ionic background electrolytes, soil ph, CaC03, and cation exchange capacity （CEC） were significantly correlated with sorption parameters.

关键词： background electrolytes distribution coefficient mineral precipitation saturation index Zn solubility

hepatoprotective and cytoprotective properties of hyptis suaveolens against oxidative stress-induced damage by CCl_4 and h_2O_2

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Asian Pacific Journal of Tropical Medicine 2012年第11期5卷 868-874页

作者： hadi Ghaffari Behrouz jalali Ghassam hS Prakash Department of Studies in Biotechnology University of MysoreManasagangotriMysore570006KarnatakaIndia

Objective:To investigate capacity of hyptis suaveolens(***) methanol extract as an antioxidant to protect against carbon tetrachloride(CCl_4)-indueed oxidative stress,hepatotoxicitv in Albino Wistar rats and cytoprotective effect of hydrogen peroxide(h_2O_2) induced cell death in hepG_2 cell ***:Two different doses of methanol extract of *** were evaluated for the hepatoprotective activity against carbon tetrachloride(CCl_4) induced hepatotoxicitv in *** in GroupⅠ:served as control,groupⅡ:***(100 mL/ kg b.w),groupⅢ:***(50 mL/kg b.w) + CCl_4(1 mg/kg),groupⅣ:***(100 mL/kg b.w) + CCl_4(1 ml/kg)and groupⅤ:CCl_4(1 mL/kg).histopathologic changes of liver were also *** was also determined by 3,(4,5-dimethylthiazol-2-yl)2,5-diphenyl-tetrazolium bromide(MTT) ***:Oral sigle dose treatment of CCl_4 produced a marked elevation in the serum levels of aspartate transaminase(AST),alanine transaminase(ALT), alkaline phosphatase(ALP) and Lactate dehydrogenase(LDh).histopathological analysis of the liver of CCl_4-induced rats revealed marked liver cell necrosis with inflammatory collections that were conformed to increase in the levels of SOD,GSh,GST,Gr and *** with h_2O_2 significantly induced death of hepG_2 *** with *** methanol extract inhibited or attenuated h_2O_2 induced ***:This study shows that *** methanol extract can be proposed to protect the liver against CCl_4-induced oxidative damage in rats and protect the cells against h_2O_2-induced oxidative damage in hepG_2 *** hepatoprotective and cytoprotective effects might be correlated with its antioxidant and free radical scavenger effects.

关键词： hyptis suaveolens Antioxidant enzymes Lipid peroxidation hepG_2 cell line hydrogen peroxide MTT assay

recent progress and perspective in additive manufacturing of EMI shielding functional polymer nanocomposites

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Nano research 2023年第1期16卷 1-17页

作者： Amirjalal jalali ruiyan Zhang reza rahmati Mohammadreza Nofar Mohini Sain Chul B.Park Center for Biocomposites&Biomaterials Processing John H.Daniels Faculty of ArchitectureLandscapeand DesignUniversity of TorontoTorontoOntario M5S 3B3Canada Microcellular Plastics Manufacturing Laboratory Department of Mechanical and Industrial EngineeringUniversity of Toronto5 King's College RoadTorontoOntario M5S 3G8Canada State Key Laboratory of high-Efficiency Utilization of Coal and Green Chemical Engineering Key Laboratory of Photovoltaic MaterialsSchool of Materials and New EnergyNingxia UniversityYinchuan 750021China Metallurgical&Materials Engineering Department Faculty of Chemical and Metallurgical EngineeringIstanbul Technical UniversityMaslakIstanbul 34469Turkey

Because of rapid progress in the electronics industry,the market has faced a huge demand for novel materials in the field of electromagnetic interference(EMI)*** functional polymer composites have demonstrated great potential to fulfill this *** synthesize the polymeric composites,functional conductive nanoadditives such as graphene,carbon nanotubes,and MXene are commonly added to polymeric matrices,and the conductive polymer nanocomposites exhibit promising electrical conductivity as well as EMI shielding *** manufacturing(AM),also referred to as threedimensional(3D)printing,has been increasingly employed to fabricate complicated geometry components in the medical,aerospace,and automotive *** has also been used to fabricate advanced EMI shielding materials for sensors,supercapacitors,energy storage devices,and flexible *** review aims at introducing the different 3D printing methods applied for the fabrication of EMI shielding polymer *** impact of the AM process on the functionality of the samples is also ***,the influence of the nanofiller type and amount on the microstructure and performance of the fabricated nanocomposites is ***,the prospects and recommended works for future study are outlined.

关键词： additive manufacturing electromagnetic interference(EMI)shielding functional polymer nanocomposites stretchable electronics

L-arginine alleviates postmenopausal complications in female rats by stimulating ovarian dopamine beta hydroxylase

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Asian pacific Journal of reproduction 2022年第6期11卷 276-284页

作者： Fatemeh Lakzaei Manizheh Karami Mohammadreza jalali Nadoushan Department of Biology Faculty of Basic SciencesShahed UniversityTehranIran Department of Pathology Faculty of MedicineShahed UniversityTehranIran

Objective:To evaluate the levels of estrogen,albumin and gonadotropins(luteinizing hormone,follicle-stimulating hormone)as well as the activity of dopamine beta hydroxylase(DAβh)in aged female rats treated with nitric oxide precursor L-arginine and neuronal nitric oxide synthase antagonist ***:A total of 224 Wistar rats(36 weeks old,weighing 250 g)based on a random sampling were divided into the control and experimental groups after Pap smear *** control group received only saline(1 mL/kg)intraperitoneally(i.p.).The experiential groups were treated with L-arginine(5,25 and 50 mg/kg,i.p.)and L-NAME(5 and 25 mg/kg,i.p.)for 3 to 21 days,once a *** samples were taken from the rats and the levels of estrogen and albumin and gonadotropins in the serum were monitored by enzyme-linked immunosorbent assay kit,and the ovaries were examined immunohistopathologically for DAβh ***:L-arginine(5 mg/kg)significantly increased estrogen level(Phich was associated with DAβh activation in the ovaries.L-NAME reduced this effect when administered prior to L-arginine dose.L-arginine caused no significant change in the levels of luteinizing hormone and follicle-stimulating *** for the lowest dose of L-arginine in the shortest period,albumin levels significantly decreased in other treatments compared to the control group(Prginine is likely to reduce postmenopausal problems due to an increased nitric oxide level.

关键词： Postmenopausal Estrogen Albumin Dopamine beta-hydroxlase L-arginine Nitric oxide