Research Publications

Academic theses and dissertations are regularly published and widely disseminated in YUOE Journal, Monographs, Universities Research Journal (URJ), Myanmar Academy of Arts and Science (MAAS) Journal, AsTEN Research Journal and International online Journals for sharing knowledge and contributing to the development of our education.

Myanmar Academy of Art & Science List of Research

No. Researcher Title Abstract Year
771 Mar Lar Aye IMPROVINGTHEMECHANICAL PROPERTIES OF CONSTRUCTION MATERIALS FROM HMAWZAR VILLAGE APPLYING SAWDUST (WOOD FIBRES) The elementary concentrations of local clay from Hmawzar village, Pyay District, Bago Division were investigated by using EDXR Fand XRDtechniques. The mechanical properties of currently used local bricks from Hmawzar village were investigated by using compressive testing machine and bending strength testing machine. Sawdust (wood fibres) with different weight ratios were thoroughly mixed to the local natural clayin homogenously and then this mixture is made into bricks. Then the properties of newly created bricks were measured. From the results of this research, sawdust (wood fibres) is the appropriate additive to prepare bricks with higher mechanical propertiesbut not more than 1wt% fibres content. It is intended to be able to improve the quality construction materials for the benefit of the nation by using the acquired out-coming knowledge and data investigated from this research. 2020
772 Saint Zar Hlwar Lwin Aung SYNTHESIS AND CHARACTERIZATION OF REDUCED GRAPHENE OXIDE BY CHEMICAL REDUCING METHOD Graphene oxide (GO) and reduced graphene oxide (rGO) were successfully synthesized by modified Hummer’s method and chemical reduction method. The essential parameters including oxidation and reduction process were confirmed by both visualization and by using characterization tools. Ultraviolet-visible(UV-vis), Fourier transform infrared (FT-IR) and X-ray diffraction (XRD) were conducted for the formation of targeted product, compound identification and crystal structures of synthesized materials. It was found out that the chemical reduction method could successfully reduce GO to rGO without using high energy consumption. Finally, this method results in high reduction degree of GO and large amount of rGO. 2020
773 Zin Bo Htut EXPERIMENTAL STUDY OF STRUCTURAL, VIBRATIONAL AND OPTICAL BAND GAP OF NICKEL DOPED TIN OXIDE Undoped Tin Oxide (SnO2) and Nickel doped Tin Oxide, Sn0.5Ni0.5O2 were prepared by chemical co-precipitation method. Analytical Reagent grade Stannous Chloride Double-hydrate (SnCl2.2H2O) and Nickel Chloride Hexahydrate (NiCl2.6H2O) were used to prepare the desired materials. De-ionized (DI) water is used as the solvent to prepare saturated solutions. Aqueous Ammonia is used as an agent material. The co-precipitated SnO2and Sn0.5Ni0.5O2were annealed at 350°C for 2 h. The samples were characterized by X-ray Diffraction (XRD), Fourier Transform Infrared (FTIR) and Ultra-Violet Visible-Near Infrared (UV-VIS-NIR) spectroscopy to study the structural, vibrational and optical properties of the samples. XRD patterns showed that the samples analogous to tetragonal structure. The broadening of observed spectral lines indicated the fine particle nature. FTIR spectra confirmed the existence of the sample phase. Optical energy band gaps were determined from (?h?)2 vs. h? graphs by using UV-VIS-NIR transmission spectra. 2020
774 Cho Cho San CALCULATION OF NEUTRON SEPARATION ENERGY OF C 12 6 Nuclear structure calculations of 12C has been performed by assuming the 12C as a two-body system which is composed of a neutron and a core nucleus 11C. The interaction between the neutron and core nucleus is derived by folding the nucleon-nucleon potential of a Gaussian form with the density distribution of the core nucleus. It is found that the neutron separation energy is in good agreement with the experimental value. 2020
775 Khin Soe Moe CONSTRUCTIONOF p - K SEPARABLE POTENTIALFROM ^(1405) PARAMETERS K p - separable potential which is reproduced from the ^(1405) energy and level width, 27MeV and 40MeVhas been constructed. The Schrodinger equation has been solved by using our constructed separable potential. And then, unknown data of potential strength parameter, V0 , and potential range parameter, b, have been calculated by comparing the binding energy and level width of ^(1405) .The constructed separable potential model is ?(?r, ?r’)=1.34 1/r 1/r’e -[r+r’/1.26] 2020
776 Thida Wint COMPARISON BETWEEN SINGLE PARTICLE ENERGY STATES OF ?-HYPERNUCLEUS AND ? - -HYPERNUCLEUS WITH WOODS-SAXON POTENTIAL In this research, ? and ? - single particle energy states are compared to study the role of ?and ? hyperons in nuclear medium. Energy states are calculated by solving one body Schrödinger equation with Woods-Saxon central potential including central part and spin-orbit coupling. Coulomb potential is taken into account for the calculation of ? - particle energy states. Wave function expanded into Gaussian basis is used in our calculation. Root-mean-square distance for various orbital angular momentum states are also calculated. The characteristic of ? and ? - single particle energy states in light and heavy nuclei are discussed. 2020
777 Theingi GLUE LIKE ROLEOFTHE ?-PARTICLEIN ?-x-? CLUSTER STRUCTURE Energy levels of the lambda- hypernuclei? 6He, ? 7-8Li, ? 9Be are predicted on the basis of the ?-x-? three-body model with x = n, d, tand ?, respectively. Rearrangement coupled-channels Gaussian basis treatment is used to solve the three-body system. Interactions between the constituent particles are determined so as to reproduce reasonably the observed low-energy properties of the ?-x nuclei (5He, 6-7Li, 8Be) and the existing data of ?-binding energies of the x+? and ?+x+? systems ( ? 3-4H, ? 5He and ? 6He,? 7-8Li, ? 9Be). To solve resonance states with correct boundary condition we have used the proper treatment of the Complex Rotation method. In our calculation, Pauli forbidden states between x and ?-clusters were excluded from the solution of Schrödinger equation by implementing the Orthogonality Condition Model (OCM). Structure change of the ?+x ordinary nuclei due to the participation of the ? particle is found to be substantially large. 2020
778 Ohnmar Oo PHYSICOCHEMICAL ANALYSIS OF WATER FROM INLE LAKE Present study involves the analysis of water from Inle Lake using some physicochemical parameters such as pH, electrical conductivity, total dissolved solids, salinity, and elemental concentrations. Water samples were collected from three sites located in Inle Lake for the period of one year i.e. August 2013 to August 2014. As a result, some physiochemical parameters such as temperature, pH, Total dissolved solids, salinity and elemental concentrations at three sites are in normal range and within the permissible limits. 2020
779 Naing Naing Wint Htoon QUANTUM AND CLASSICAL DERIVATIONS OF BLACK HOLE ENTROPY AND PHYSICAL MICROSTATES Classical and quantum mechanical derivations of black hole entropy have been studied in detail in the frame work of general relativity ,thermodynamics and quantum mechanics. The black hole entropy and area have been derived from classical thermodynamics. The relationship between the classical and quantum formulas can be shown to be similar to that of black body radiation. Microstates of the black hole entropy and its physical implications have been investigated. Some applications of black hole entropy to astrophysics have also been presented. 2020
780 Yu Yu Nge SOLVING QUANTUM MECHANICAL HARMONIC OSCILLATOR AND CHAOTIC QUANTUM LINEAR MAP Fundamental motion of quantum mechanical harmonic oscillator and chaotic quantum linear map has been investigated using numerical methods and visualization of the results. Periodic chaotic nature is found in visualization of quantum linear map. 2020