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作者:A.I. Abd-Elhamid , Hisham M.A. Soliman , H. F. Aly
来源:[J].Journal of Advances in Nanomaterials, 2019, Vol.4 (1)Isaac
摘要:In this report an efficient catalyst was prepared by hydrothermal route to produce Co-Al layered double hydroxide nanosheets (LDH-NS) (less active material), followed by alkali treatment to prepare the more active material (A-LDH). The scanning electron microscope (SEM), Fourier ...
作者:Zbigniew Osiak
来源:[J].Theoretical Physics, 2019Isaac
摘要:I give new relativistic formulas for kinetic, rest and total energies. The change in kinetic energy of a particle will be determined as the work done by the spatial part of the Minkowski four-force. The new relativistic kinetic energy and its relation with the spatial part of the...
作者:Carlos Castro Perelman
来源:[J].Theoretical Physics, 2019Isaac
摘要:The nonlinear and novel Bohm-Poisson-Schr?dinger equation proposed by us is studied further. It has solutions leading to repulsive gravitational behavior. An exact analytical expression for the observed vacuum energy density is obtained. Further results are provided which in...
作者:S.Pozdneev
来源:[J].Theoretical Physics, 2019Isaac
摘要:The main features of the resonance scattering of electrons by molecules are described. The parameters of the resonances are calculated in the frame of two different approaches: 1) the theory of collisions in a two-body system (where applicable); 2) the quantum theory of scatterin...
作者:Shengquan Che
来源:[J].Journal of Advances in Economics and Finance, 2019, Vol.4 (1)Isaac
摘要:Around the globe the understanding and assessment of the sustainability of farming enterprises is among the most topical academic and practical issues. Despite its importance there are few profound studies on sustainability of different types of farming enterprises during Eu...
作者:Uyiosa Omoregie
来源:[J].Journal of Advances in Economics and Finance, 2019, Vol.4 (1)Isaac
摘要:Nigeria is generally referred to as an ‘oil economy’ because of the country’s large amount of oil reserves. Yet, the petroleum sector in Nigeria currently contributes less than 10 percent of the country’s gross domestic product (GDP). In comparison, some Gulf State...
作者:Onuoha , Peripaul Oluchukwu , Woghiren ...
来源:[J].Journal of Advances in Economics and Finance, 2019, Vol.4 (1)Isaac
摘要:This paper attempts to survey a wide range of job creation strategies that policymakers can implement during times of economic recession. This paper does not attempt to determine which job creation strategies work “best;” rather, it is a broad survey mapping the landscape of...
作者:Said R. Grace
来源:[J].Advances in Analysis, 2019, Vol.4 (1)Isaac
摘要:We present new oscillation criteria for a class of third order nonlinear differential equations with a nonpositive neutral term. The results obtained improve and complement some related results known in the literature. Two illustrative examples are provided
作者:J. R. Croca , R. N. Moreira , M. Gatta ...
来源:[J].Theoretical Physics, 2018, Vol.3 (4)Isaac
摘要:The speed of light has been repeatedly measured considering the time a photon spends travelling from an initial point to another and then coming back to the initial point, the so called two-way speed of light. Experiments aiming to measure the speed of light when it travels stric...
作者:S. Khondaker , N. A. Chowdhury , A. Mannan ...
来源:[J].Theoretical Physics, 2018, Vol.3 (4)Isaac
摘要:The propagation of ion-acoustic waves (IAWs) in a collisionless unmagnetized selfgravitating degenerate quantum plasma system (SG-DQPS) has been studied theoretically for the first time. A nonlinear Schrödinger equation is derived by using the reductive perturbation method t...

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