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纳米科学杂志:当前研究

体积 4, 问题 1 (2019)

研究文章

A New Asymptotic Study to the 3-Dimensional Radial Schrodinger Equation under Modified Quark-antiquark Interaction Potential

Abdelmadjid Maireche

In present work, the modified 3-dimensional modified radial Schrödinger equation is analytically solved for the nonrelativistic interactions under the modified quark-antiquark interaction potential in the symmetries of Non-Commutative Quantum Mechanics (NCQM), using the generalized Bopp’s shift method in the case of perturbed Non-Relativistic Quantum Chromodynamics (pNRQCD). The new energy eigenvalues (ground state, first excited state and nth excited state) and the corresponding Hamiltonian operator are calculated in 3-dimensional Non-Commutative Real Space Phase (NC: 3D-RSP) symmetries instead of solving modified Schrödinger Weyl Moyal star product. The present results, in (NC: 3D-RSP), are applied on the charmonium image, bottomonium image and image mesons. It is found that the perturbative solutions of discrete spectrum and quarkoniums mass can be expressed by the the parabolic cylinder functions function, Gamma function, the discreet atomic quantum numbers ( j, l, s, m) of the image state and the potential parameters (a,b,c), in addition to non-commutativity parameters ( Θ and image). The total complete degeneracy of new energy levels of the modified quark-antiquark interaction potential changed to become equals to the value 3n2 instead the values n2 in ordinary Commutative Quantum Mechanics (CQM). Our obtained results are in good agreement with the already existing literatures in NCQM.

研究文章

Pharmacological Properties of Cissus quadrangularis Loaded Silver Nanoparticles: An In-vitro Study

Mounica Gummapu and Pavithra Amritkumar

Plant extracts traditionally used in ancient medical systems such as Ayurveda and Unani for thousands of years is now being revisited with interests turning towards utilizing them as biologically synthesized nanoparticles with better delivery. Cissus quadrangularis Linn. is one such important medicinal plant belonging to the family Vitaceae. In India, C. quadrangularis stems are widely used as medicine as well as in traditional cuisine owing to the presence of several bioactive compounds in it. In the present study, parts of C. quadrangularis plant were collected and ethanolic (Soxhlet and cold centrifuge) extracts were made from fresh and dried samples. Green synthesis of silver nanoparticles with extracted C. quadrangularis was carried out and its efficacy was checked. Phytochemical properties of C. quadrangularis extract was evaluated and various pharmacological properties such as anti-microbial, anti-oxidant, anti-inflammatory and anti-cancerous properties of both C. quadrangularis extracts and C. quadrangularis loaded sliver nanoparticles were assessed and compared. Overall, the green synthesized C. quadrangularis loaded silver nanoparticles had positive pharmacological properties, which were demonstrated in-vitro through this study.

研究

Study of Di-electric Constant Dependency of Eu2O3 Doped SrTiO3 Nano-Ceramic on Temperature and Frequency

Md. Shafiul Islam, Shahnaz Parven, Shujit Chandra Paul and Md. Yusuf Miah

This work aims the temperature and frequency dependence dielectric properties of Eu2O3 doped SrTiO3 (STO) nanoceramic synthesized by solid state reaction method. The crystalline structure, microstructures of SrTiO3 polycrystals doped with Eu3+ at different compositional ratios were studied by XRD and SEM analyses. The X-ray spectra show that the synthesized powder has cubic structure. From the dielectric behavior it was possible to identify that Eu doping produces changes with respect to pure STO. Dielectric constant was found to decrease with increase in frequency and increase with doping content and sintering temperature.

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