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Chinese Physics C 2015年第6期39卷 34-39页

作者： M.Ghazvini N.Salehi H.Hassa.a.adi a.a.rajabi Department of Physics Shahrood University Department of Basic Sciences Shahrood Branch Islamic Azad University

In this paper, the Schrodinger equation for a 6-body system is studied. We solve this equation for the lithium nucleus by using a supersymmetry method with several specific potentials. These potentials are the Yuka.a.potential, the generalized Yuka.a.potential and the Hellmann potential. The results of our model for all calculations show that the ground state binding energy of the lithium nucleus with these potentials is very close to that obtained experimentally.

关键词： lithium calculating nucleus normalized invariance exact fitted dimensions searching applying

Second-order modeling of non-premixed turbulent methane-air combustion

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Journal of Central South University 2021年第11期28卷 3545-3555页

作者： Ali ERSHADI Mehran rajabi ZARGa.a.ADI Faculty of Mechanical Engineering Semnan UniversityP.O.B.35131-191SemnanIran Department of Mechanical Engineering Dezful BranchIslamic Azad UniversityDezfulIran

The main purpose of this research is the second-order modeling of flow and turbulent heat flux in nonpremixed methane-air combustion.A turbulent stream of non-premixed combustion in a stoichiometric condition,is numerically a.a.yzed through the Reynolds averaged Navier-Stokes(RANS) *** modeling radiation and combustion,the discrete ordinates(DO) and eddy dissipation concept model have been *** Reynolds stress transport model(RSM) also was used for turbulence *** THF in the energy equation,the GGDH model and high order algebraic model of HOGGDH with simple eddy diffusivity model have been *** the numerical results of the SED model(with the turbulent Prandtl 0.85) and the second-order heat flux models with a.a.lable experimental da.a.follows that applying the second-order models significantly led to the modification of predicting temperature distribution and species mass fraction distribution in the combustion *** of turbulent Prandtl number in the combustion chamber shows that the assumption of Pr_(t) of 0.85 is far from reality and Pr_(t) in different areas varies from 0.4 to 1.2.

关键词： combustion modeling turbulent Prandtl number second-order models Reynolds stress transport model

Genetic diversity and phylogenetic relationships between and within wild Pistacia species populations and implications for its conservation

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Journal of Forestry Research 2016年第3期27卷 685-697页

作者： Parvaneh Iranjo Daryuoosh Na.a.i Ahmadi Karim Sorkheh Hamid rajabi Memeari Sezai Ercisli Department of Agronomy and Plant Breeding Faculty of Agriculture Shahid Chamran University of Ahwaz Department of Horticulture Agricultural Faculty Ataturk University

Although cultivation and utilization of Pistacia.a.e fully exploited, the evolutionary history of the Pistacia genus and the relationships among the species and accessions is still not well understood. The aim of this study was to a.a.yze random amplified polymorphic DNA（RAPD） in a total of 50 accessions of wild pistachio species, which included five populations Pistacia vera, Pistacia khinjuk,Pistacia.a.lantica, Pistacia mutica, and Pistacia *** levels of genetic diversity were detected within wild pistachio accessions, as revealed by using the unweighted pair-group method with arithmetic averaging and supported via.a.alysis of molecular variance. The objectives of this investigation were to estimate marker indices, polymorphic information contents（PICs）, and genetic similarities（GS）for RAPD markers; assess the genetic diversity of Pistacia species, using GS estimated from RAPD fingerprints and molecular cha.a.terization; and facilitate the use of markers in inter-specific introgression and cultivar *** of the 149 polymerase chain reaction fragments that were scored, 146（97.98 %） were polymorphic. Genetic similarities ranged from 0.3 to 0.86 %, marker indices ranged from 2.98 to 17.74 %, and PICs ranged from 0.80 to0.99 %. Our results provided great molecular identification of all assayed genotypes, which have shown that there is large quantity of genetic diversity among the pistachio accessions. This finding might render striking information in breeding ma.a.ement strategies for genetic conservation and cultivar development.

关键词： Pistachio Pistacia Phylogenetic RAPD Population structure Genetic diversity

Approximate a.a.ytical Solution of the Yuka.a.Potential with Arbitrary Angular Momenta

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Chinese Physics Letters 2012年第8期29卷 16-19页

作者： M.Hamzavi M.Movahedi K.-E.Thylwe a.a.rajabi Department of Basic Sciences Shahrood BranchIslamic Azad UniversityShahroodIran Department of Physics Golestan UniversityGorganIran KTH-Mechanics Royal Institute of TechnologyS-10044 StockholmSweden Physics Department Shahrood University of TechnologyShahroodIran

The Yuka.a.potential is often used to compute bound-state normalizations and energy levels of neutral *** using the generalized pa.a.etric Nikiforov–Uvarov method,we obtain approximate a.a.ytical solutions of the radial Schrödinger equation for the Yuka.a.*** energy eigenvalues and the corresponding eigenfunctions are calculated in closed *** numerical results are presented and show that these results are in good agreement with those obtained previously by other ***,we find the energy levels of the familiar pure Coulomb potential energy levels when the screening pa.a.eter of the Yuka.a.potential goes to zero.

关键词： potential methods Yukawa

Structural and Optical Cha.a.teristics of Silica Nanotubes Using CNTs as Template

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Nano-Micro Letters 2010年第4期2卷 268-271页

作者： Rasoul Malekfar M.Hassan rajabi M.Hossein Majless Ara Physics Department Faculty of Basic SciencesTarbiat Modares University Department of Physics Faculty of Basic SciencesMember of Young Researches ClubIslamic Azad University Department of Physics Faculty of Basic SciencesTarbiat Moallem University

Silica coated multi-wall carbon nanotubes(MWCNTs),silica@MWCNTs and nanocomposites were synthesized by a sol-gel *** using the synthesized nanocomposites and also CNTs as templates,silica nanotubes(silica-NTs) were *** optical properties of fabricated nanocomposites and nanotubes were cha.a.terized by back-scattering micro Ra.a.,UV/Vis/NIR and FT-IR spectra,which show the presence of CNTs structure in the ***/Vis/NIR and FT-IR spectra.a.so show the presence of silica *** recorded spectra from UV/Vis/NIR and FT-IR also confirm the presence of silica compounds in the *** results of FE-SEM imaging da.a.indicate that the synthesized samples are MWCNTs coated uniformly by silica molecules,which act as the template to synthesize silica-NTs.

关键词： Carbon nanotubes(MWCNTs) Silica Ra.a. Ultra violet/visible/near infrared(UV/Vis/NIR)

The Role of Vanes in the Damping of Bird Feathers

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Journal of Bionic Engineering 2023年第4期20卷 1646-1655页

作者： Kai Deng Hamed rajabi Alexander Kovalev Clemens F.Schaber Zhendong Dai Stanislav N.Gorb Functional Morphology and Biomechanics Institute of ZoologyKiel University24098KielGermany School of Engineering London South Bank UniversityLondonSE10AAUK Institute of Bioinspired Structure and Surface Engineering Nanjing University of Aeronautics and AstronauticsNanjing210026People’s Republic of China

Bird feathers sustain bending and vibrations during *** unwanted vibrations could potentially cause noise and flight *** could alter the system response,resulting in improving quiet flight,stability,and *** of feathers are known to be indispensable for supporting the aerodynamic function of the *** relationship between the hierarchical structures of vanes and the mechanical properties of the feather has been previously ***,still little is known about their relationship with feathers’damping ***,the role of vanes in feathers’damping properties was *** vibrations of the feathers with vanes and the bare shaft without vanes after step deflections in the plane of the vanes and perpendicular to it were measured using high-speed video *** presence of several main natural vibration modes was observed in the feathers with *** trimming vanes,more vibration modes were observed,the fundamental frequencies increased by 51-70%,and the damping ratio decreased by 38-60%.Therefore,we suggest that vanes largely increase feather damping *** mechanisms based on the morphology of feather vanes are *** aerodynamic damping is connected with the pla.a. vane surface,the structural damping is related to the interlocking between barbules and barbs,and the material damping is caused by the foamy medulla inside barbs.

关键词： Bird Feather Vibrations Damping Bionic

Solutions of the two-body Salpeter equation under the Coulomb and exponential potential for any l state with Laplace approach

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Chinese Physics C 2014年第2期38卷 1-4页

作者： a.a.rajabi E.Momtazi B.H.Ya.a.loo H.Hassa.a.adi Physics Department Shahrood University of Technology Department of Basic Sciences Shahrood Branch Islamic Azad University

In this paper we have solved the two-body spinless-Salpeter（SS） equation under the Coulomb and exponential type potentials. We have applied an approximation for the centrifugal term in our calculations. The energy eigenvalues and the corresponding eigenfunctions are reported by using the Laplace transform approach for any n, states.

关键词： spinless-Salpeter equation Coulomb and exponential potential Laplace approach

Investigation of deformed nuclei with a new potential combination

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Chinese Physics C 2013年第11期37卷 30-39页

作者： E.Ja.a.imanesh H.Hassa.a.adi a.a.rajabi H.Rahimov S.Zarrinka.a. Physics Department Shahrood University of Technology Computer Engineering Department Shahrood University of Technology Shahrood Department of Basic Sciences Garmsar Branch Islamic Azad University

We investigate the alpha-decay half-lives of non-spherical nuclei with the Yuka.a.potential as the prox- imity potential and an angle-dependent term that accounts for the deformation effects and apply the results to Ho, Tb, Lu, Tin, Ta, Hf, Yb, Re, Ir, Pt, Au, Po, etc. as examples. The comparison with the existing da.a.is encouraging.

关键词： alpha decay deformed nuclei ground state multiple approximations Yuka.a.potential

An approximate solution of the DKP equation under the Hulthén vector potential

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Chinese Physics C 2013年第2期37卷 1-4页

作者： S.Zarrinka.a. a.a.rajabi B.H.Ya.a.loo H.Hassa.a.adi Department of Physics Shahrood University of Technology

Using the a.a.ytical NU technique as well as an acceptable physical approximation to the centrifugal term, the bound-state solutions of the Duffin-Kemmer-Petiau equation are obtained for arbitrary quantum numbers. The solutions appear in terms of the Jacobi Polynomials. Various expla.a.ory figures and tables are included to complete the study.

关键词： Duffin-Kemmer-Petiau equation Hulthén potential NU technique

Comparison of corneal measurements in keratoconic eyes using rotating Scheimpflug camera.a.d scanning-slit topography

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International Journal of Ophthalmology(English edition) 2015年第2期8卷 275-280页

作者： Mohammad Naderan Saeed Shoar Morteza Naderan Mohammad Amin Ka.a.eddin Mohammad Taher rajabi Eye Research Center Farabi Eye Hospital Tehran University of Medical Sciences Department of Biotechnology College of ScienceUniversity of Tehran

AIM: To compare the anterior segment measurements obtained by rotating Scheimpflug camera(Penta.a.) and Scanning-slit topography(Orbscan IIz) in keratoconic ***: A total of 121 patients, 71 males(58.7%)and 50 females(41.3%)(214 eyes) with the diagnosis of keratoconus(KC) were enrolled in this study. Following diagnosis of KC by slit-lamp biomicroscopic examination, central corneal thickness(CCT), thinnest corneal thickness(TCT), anterior chamber depth(ACD),and pupil diameter(PD) were measured by a single examiner using successive instrumentation by Penta.a. and ***: There was no significant difference between the two instruments for the measurement of CCT and TCT. In contrast, scanning-slit topography measured ACD(3.46±0.40 mm vs 3.38±0.33 mm, P =0.019) and PD(4.97 ±1.26 mm vs 4.08 ±1.19 mm, P a.a.. In terms of the ACD, the mean difference was 0.08 mm(95%CI: 0.04 to 0.12, P a.a.. Similarly, Orbscan measurement for PD was longer than Penta.a.(95% CI:0.68 to 1.08, P a.a. and Orbscan concerning CCT measurement while comparing scanning-slit topography and rotatingScheimpflug camera there was an underestimation for TCT and overestimation for ACD and PD.

关键词： keratoconus Orbscan Penta.a. rotating Scheimpflug camera scanning-slit topography corneal pachymetry central corneal thickness thinnest corneal thickness anterior chamber depth pupil diameter