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Communications in Theoretical Physics 2014年第2期61卷 149-152页

作者： B.i.ita A.i.ikeuba A.n.ikot Theoretical Quantum Chemistry Group Department of Chemistry University of Calabar Theoretical Physics Group Department of Physics University of Uyo

The solutions of the Schrodinger equation with quantum mechanical gravitational potential plus harmonic oscillator potential have been presented using the parametric nikiforov-Uvarov method. The bound state energy eigen values and the corresponding un-normalized eigen functions are obtained in terms of Laguerre polynomials. Also a special case of the potential has been considered and its energy eigen values are obtained.

关键词： Schrodinger equation quantum mechanical gravitational potential harmonic oscillator nikiforov-Uvarov method Laguerre polynomials

influence of elastic foundations and carbon nanotube reinforcement on the hydrostatic buckling pressure of truncated conical shells

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Applied Mathematics and Mechanics(English Edition) 2020年第7期41卷 1011-1026页

作者： A.H.SOFiYEV i.T.PiRMAMEDOV n.KURUOGLU Department of Civil Engineering Suleyman Demirel UniversityIsparta 32260Turkey Department of Mathematics Azerbaijan Technical UniversityBaku 1073Azerbaijan Department of Civil Engineering Gelisim UniversityIstanbul 34310Turkey

in this study,the effects of elastic foundations(EFs)and carbon nanotube(CnT)reinforcement on the hydrostatic buckling pressure(HBP)of truncated conical shells(TCSs)are *** first order shear deformation theory(FOSDT)is generalized to the buckling problem of TCSs reinforced with CnTs resting on the EFs for the first *** material properties of composite TCSs reinforced with CnTs are graded linearly according to the thickness *** Winkler elastic foundation(W-EF)and Pasternak elastic foundation(P-EF)are considered as the *** basic relations and equations of TCSs reinforced with CnTs on the EFs are obtained in the framework of the FOSDT and solved using the Galerkin *** of the innovations in this study is to obtain a closed-form solution for the HBP of TCSs reinforced with CnTs on the ***,the effects of the EFs and various types CnT reinforcements on the HBP are investigated *** obtained results are compared with the results in the literature,and the accuracy of results is confirmed.

关键词： truncated conical shell(TCS) carbon nanotube(CnT) Winkler elastic foundation(W-EF) Pasternak elastic foundation(P-EF) hydrostatic pressure buckling

Mass Spectrometry Study of non-Covalent Complexes of Bioflavonoids with Cyclotriveratrylene Synthesized in Subcritical Water

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American Journal of Analytical Chemistry 2013年第9期4卷 464-468页

作者： Anna V. Lekar Sergey n. Borisenko Elena V. vetrova Roman n. Borisenko nickolay i. Borisenko Ecological Analytical Center of Southern Federal University Rostov-on-Don Russia institute of Physical and Organic Chemistry Southern Federal University Rostov-on-Don Russia

Mass spectrometry was used for studying of non-covalent complexes of bioflavonoids with cyclotriveratrylene (CVT). The complexes of cyclotriveratrylene (CVT) with the bioflavonoids (quercetin or dihydroquercetin) have been synthesized in subcritical water. The complexe formation was carried out at different temperatures of subcritical water (from 120℃ to 230℃). The structure of the inclusion compounds was confirmed by the data of ESi MS spectroscopy. The mass spectrometry results showed the presence of mixed adducts of CTV monomer, dimer, trimer and tetramer with quercetin and dihydroquercetin. Composition of the CTV complexes with the bioflavonoids, which were obtained in subcritical water medium and by traditional method, was compared.

关键词： Subcritical Water Cyclotriveratrylene (CTV) Quercetin Dihydroquercetin ESi Mass Spectrometry

Changing dietary n-6:n-3 ratio using different oil sources affects performance,behavior,cytokines mRnA expression and meat fatty acid profile of broiler chickens

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Animal nutrition 2018年第1期4卷 -页

作者： Doaa ibrahim Rania El-Sayed Safaa i.Khater Enas n.Said Shefaa A.M.El-Mandrawy Department of nutrition and Clinical nutrition Faculty of Veterinary MedicineZagazig University Department of Biochemistry Faculty of Veterinary MedicineZagazig University Department of Veterinary Public Health Faculty of Veterinary MedicineZagazig University Department of Clinical Pathology Faculty of Veterinary MedicineZagazig University

Typical formulated broiler diets are deficient in n-3 poly-unsaturated fatty acids(PUFA) due to widening n-6:n-3 PUFA ratio which could greatly affect performance,immune system of birds and,more importantly,meat *** study was conducted to evaluate the effect of modifying dietary n-6:n-3 PUFA ratio from plant and animal oil sources on performance,behavior,cytokine m RnA expression,antioxidative status and meat fatty acid profile of broiler ***(n=420) were fed 7 diets enriched with different dietary oil sources and ratios as follows: sunflower oil in control diet(C); fish oil(FO); 1:1 ratio of sunflower oil to FO(C1 FO1); 3:1 ratio of sunflower oil to fish oil(C3 FO1); linseed oil(LO); 1:1 ratio of sunflower oil to linseed oil(C1 LO1); 3:1 ratio of sunflower oil to linseed oil(C3 LO1),resulting in dietary n-6:n-3 ratios of approximately 40:1,1.5:1,4:1,8:1,1:1,2.5:1 and 5:1,*** best final body weight,feed conversion ratio as well as protein efficiency ratio of broilers were recorded in the C1 FO1 and C1 LO1 *** with the control group,the dressing percentage and breast and thigh yield were highest in the C1 FO1 and C1 LO1 *** the dietary n-6:n-3 ratio increased(P n-3 PUFA content of breast ***,the breast meat contents of eicosapentaenoic acid and docosahexaenoic acid increased(P ith increasing dietary FO whereas a-linolenic acid content was higher with LO ***,enriching the diets with n-3 PUFA from FO and LO clearly decreased(P iglycerides and very low-density lipoproteins and enhanced antioxidative *** feeding frequency was decreased(P in the C1 FO1 and C1 LO1 ***,n-3 PUFA-enriched diets enhanced the frequency of preening,wing flapping and *** oil source addition,compared to plant oil,to broiler diets enhanced the relative m RnA expression of interferon gamma,interleukin-1 beta,interleukin-2 and

关键词： Broiler n-6:n-3 PUFA ratio Performance Antioxidant status Meat immunity

new-type internal target for structural ion stripping

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Chinese Physics C 2018年第1期42卷 151-156页

作者： D.n.Makarov V.i.Matveev Federal Center for integrated Arctic Research Russian Academy of Sciences Arkhangelsk 163000 Russia northern (Arctic) Federal University Arkhangelsk 163002 Russia

The search is now on for new materials that can be used for ionic stripping. Materials that maximize the stripping of the structural ion are important for conducting experiments with quark-gluon plasma. Although this paper is a theoretical study, it offers practical applications, in heavy-ion accelerators, of the new effect of collision multiplicity with high-energy ions interacting with polyatomic targets. it is shown that internal nanostructured targets in which the collision multiplicity effect is manifested can more efficiently strip out structural ions compared to standard internal targets for stripping. A target consisting of oriented nano-tubes with the C_（240） chirality（10,0）is considered as an example. A comparison with the stripping process on a carbon target with the same number of misaligned atoms in a unit of volume C is provided.

关键词： ion stripping accelerator target ion beam nanotube charge composition

isomeric ratio of the ^(181)Ta(γ,3n)^(178m,g)Ta reaction products at energy Eγmax up to 95 MeV

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Chinese Physics C 2022年第1期46卷 102-109页

作者： O.S.Deiev i.S.Timchenko S.n.Olejnik V.A.Kushnir V.V.Mytrochenko S.A.Perezhogin national Science Center"Kharkiv institute of Physics and Technology" 1 Akademicheskaya St.61108 KharkivUkraine

The photoneutron reaction^(18)Ta(y,3m)(178m,g)Ta was investigated with the beam from the nSC KiPT electron linear accelerator *** measurements were performed using the residual y-activity *** bremsstrahlung flux-averaged cross sections((E_(γmax))>.(r(E_(γmax))>m.nd the isomerie ratio of the re-action products d(E_(γmax))were *** theoretical values of the averaged cross-sections and isomeric ratio were calculated using the partial cross-sections from the TALYS1.95 code for different level density models LD 1-6..The obtained experimental d(E_(γmax))agree with the data in the lterature,but differ from the theoretical values in ab-solute magnitude and the behavior of the energy dependence.A comparison of the determined averaged cross-sec-tions with the calculated cross sections showed the best agreement for the case of the LD 5 model.

关键词： bremsstrahlung flux-averaged cross-section isomeric ratio bremsstrahlung end-point energy of 35-95 MeV activation and off-line 7-ray spectrometric technique TALYS1.95 GEAnT4.9.2

Unsteady three-dimensional boundary layer flow due to a permeable shrinking sheet

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Applied Mathematics and Mechanics(English Edition) 2010年第11期31卷 1421-1428页

作者： n.BACHOK A.iSHAK i.POP Department of Mathematics Faculty of ScienceUniversiti Putra Malaysia School of Mathematical Sciences Faculty of Science and TechnologyUniversiti Kebangsaan Malaysia institute of Mathematical Sciences Faculty of ScienceUniversity of Malaya Faculty of Mathematics University of Cluj

The unsteady viscous flow over a continuously permeable shrinking surface is studied. Similarity equations are obtained through the application of similar transformation techniques. numerical techniques are used to solve the similarity equations for different values of the unsteadiness parameter, the mass suction parameter, the shrinking parameter and the Prandtl number on the velocity and temperature profiles as well as the skin friction coefficient and the nusselt number. it is found that, different from an unsteady stretching sheet, dual solutions exist in a certain range of mass suction and unsteadiness parameters.

关键词： unsteady three-dimensional flow boundary layer shrinking sheet dual solution

Landau quantization effects on damping Kawahara solitons in electron–positron–ion plasma in rotating ionized medium

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Communications in Theoretical Physics 2024年第10期76卷 141-150页

作者： E i El-Awady S Hussain n Akhtar Department of Physics Faculty of SciencePort Said UniversityPort Said 42521Egypt Theoretical Physics Division(TPD) PINSTECHP.O.Nilore 45650IslamabadPakistan

For the dynamics of three-dimensional electron–positron–ion plasmas,a fluid quantum hydrodynamic model is proposed by considering Landau quantization effects in dense ***–neutral collisions in the presence of the Coriolis force are also *** application of the reductive perturbation technique produces a wave evolution equation represented by a damped Korteweg–de Vries *** equation,however,is insufficient for describing waves in our system at very low dispersion *** a result,we considered the highest-order perturbation,which resulted in the damped Kawahara *** effects of the magnetic field,Landau quantization,the ratio of positron density to electron density,the ratio of positron density to ion density,and the direction cosine on linear dispersion laws as well as soliton and conoidal solutions of the damped Kawahara equation are *** understanding from this research can contribute to the broader field of astrophysics and aid in the interpretation of observational data from white dwarfs.

关键词： Kawahara equation solitary and cnoidal waves quantum plasma magnetoplasmas Landau quantization Coriolis force

Full-Annulus Simulation of the Surge inception in a Transonic Centrifugal Compressor

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Journal of Thermal Science 2015年第5期24卷 442-451页

作者： i.Trébinjac E.Benichou n.Buffaz Laboratoire de Mécanique des Fluides et d’Acoustique UMR CNRS 5509 Ecole Centrale de Lyon UCBLyon I INSA 36 av. Guy de Collongue 69134 Ecully Cedex France Turbomeca groupe Safran 64511 Bordes France

Full annulus simulations of the flow which develops in a transonic centrifugal compressor are performed at two stable operating points （peak efficiency and near surge） and during the path to surge. At stable conditions, the flow field properties are analyzed by comparisons with experimental data and numerical simulations using a phase lagged approach previously carried out. Regarding the stage overall performance, an excellent agreement is obtained between the numerical results （both with time lagged approach and full-annulus calculation） and the ex- periments. From the full-annnlus simulations, the change in flow pattern from peak efficiency to surge is found to be perfectly similar to that obtained from the simulations using the time lagged approach. in particular, pro- vided that the operating point is stable, the flow proves to be chorochronic. The full-annulus simulations were continued after a unique small change in the throttle law applied at the exit of the numerical domain. The mass flow, pressure ratio and efficiency then significantly drop all the more the time progresses. The simulation becomes unstable and the surge inception well underway. The path to surge is found to be due to the enlargement of the boundary layer separation on the suction side of the diffuser vanes in accordance with the conclusions drawn from the chorochronic simulations and experiments. But as the time progresses, the flow loses its chorochronic character. Stall cells rotating at around 7% of the rotor speed develop and lead to surge in around 5 revolutions.

关键词： centrifugal compressor surge transonic rotating stall full-annulus simulation URAnS

Three-dimensional mixed convection stagnation-point fow past a vertical surface with second-order slip velocity

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Applied Mathematics and Mechanics(English Edition) 2023年第4期44卷 641-652页

作者： A.V.ROSCA n.C.ROSCA i.POP Department of Statistics-Forecasts-Mathematics Faculty of Economics and Business AdministrationBabes-Bolyai UniversityCluj-Napoca 400084Romania Department of Mathematics Faculty of Mathematics and Computer ScienceBabes-Bolyai UniversityCluj-Napoca 400084Romania Academy of Romanian Scientists 3 Ilfov StreetBucharest 050044Romania

This study is concerned with the three-dimensional(3D)stagnation-point for the mixed convection flow past a vertical surface considering the first-order and secondorder velocity *** the authors’knowledge,this is the first study presenting this very interesting *** partial differential equations for the flow problem are transformed into nonlinear ordinary differential equations(ODEs)by using appropriate similarity *** ODEs with the corresponding boundary conditions are numerically solved by utilizing the bvp4c solver in MATLAB programming *** effects of the governing parameters on the non-dimensional velocity profiles,temperature profiles,skin friction coefficients,and the local nusselt number are presented in detail through a series of graphs and ***,it is reported that the reduced skin friction coefficient decreases for the assisting flow situation and increases for the opposing flow *** numerical computations of the present work are compared with those from other research available in specific situations,and an excellent consensus is *** exciting feature for this work is the existence of dual *** important remark is that the dual solutions exist for both assisting and opposing flows.A linear stability analysis is performed showing that one solution is stable and the other solution is not *** notice that the mixed convection and velocity slip parameters have strong effects on the flow *** effects are depicted in graphs and discussed in this *** obtained results show that the first-order and second-order slip parameters have a considerable effect on the flow,as well as on the heat transfer characteristics.

关键词： three-dimensional(3D)mixed convection flow stagnation point flow first-order slip velocity second-order slip velocity numerical solution stability analysis