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
891 Shwe Sin Oo ANALYSIS OF GROUND WATER SAMPLES AND THEIR POSSIBLE HEALTH EFFECTS IN MON STATE Analysis of water sample is one of the major issues during water quality monitoring of either surface or ground water sources. The objective of this study was to determine elemental concentration, some properties of ground water of hand-dug wells in one village of Mawlamyine district and two villages of Thaton district at Mon State, Myanmar and also their possible effects on the health of the inhabitants. Apparently, ground water in most countries is contaminated by the large number of chemical fertilizer used in our daily life and disposal of massive industrial effluents and mining activities. These wastes have negative effects on human health. Different waste products have different affects depending on their locations and kinds. It is essential to examine the water quality to avoid its hazard on local people. In this paper, ground water samples were analyzed using atomic absorption spectroscopy (AAS) to determine the concentration of some dissolved elements. The metal analysis is done to detect (i) arsenic (ii) lead (iii) cadmium (iv) iron (v) magnesium (vi) copper (vii) zinc using AAS method and some water parameters such as (i) pH (ii) electrical conductivity, (iii) temperature. The results obtained are compared with guidelines for drinking water quality World Health Organization (WHO) (2011). All the observed values except Cd are within the safe limitations (WHO). The observation from this job revealed that the measured pH values were in the range of 7.1 to 7.5, the values of electrical conductivity were found 43 to 625 ?S/cm. The achieved turbidity values of all ground water samples are less than 5. 2020
892 Shwe Nan Htet INVESTIGATION ON ATTENUATION CHARACTERISTICS OF Al-Zn METAL ALLOY FOR GAMMA RAY SHIELDING The main purpose of this study was to investigate gamma ray attenuation characteristics of Al-Zn metal alloy shielding material. The attenuation coefficients of Al-Zn metal alloy for various gamma sources were determined using gamma ray spectrometer systems. The gamma ray attenuation characteristics of Al-Zn metal alloy shielding material could be tested by calculating half value layer (HVL), tenth value layer (TVL) and mean free path (MFP).It was found that the photon intensity decreased as attenuator thickness increased. It was seen that linear and mass attenuation coefficients of Al-Zn metal alloy sample decreased while half value layer (HVL), tenth value layer (TVL) and mean free path (MFP) of that sample increased when the gamma energies increased. Therefore, Al-Zn metal alloy shielding materialwere applicable for low energy gamma ray. 2020
893 Hla Toe CONSTRUCTION OF SMALL SCALE WATER FLOW TURBINE FOR RURAL AREA APPLICATION The objective of this research is to construct of small scale pilot plan flow turbine for rural area application in Myanmar. In Myanmar, there are many water resources. Water flow turbines are considered, designed and constructed based on rural area electricity requirement. All parts are available in local market and were installed in laboratory. The constructed flow turbine performed their functions correctly. This turbine can be applied over a water flow area and head range 3 m to 10 m in test running condition. This turbine can be constructed simply by people from rural area in our country with local materials. The small scale cross-flow turbine produces maximum power 4.8 w of under a head length of 10 m. This type of turbines is sample design, easy to maintain and low cost to construct. 2020
894 Khin Moe War ANNEALING EFFECTS ON TRACKS IN MAKROFOL DETECTORS (SSNTDs) A change of fission track density and track length in Makrofol with different annealing temperature and annealing time was investigated. Ten pieces of (1 cm x 1 cm) Makrofol detectors each was contacted with 252 Cf source for 1 hour. Among them, two pieces were unannealed. Four pieces of Makrofol with fission tracks were annealed at 60? C and the other four pieces were annealed at 100?C for 30 min, 60 min, 90 min and 120 min respectively. After that the annealed and unannealed detectors were etched in 6.25N NaOH at 60?C for 75 min. The fission fragment tracks were counted and the tracks length were measured with the aid of an optical microscope. The average tracks densities of detector were calculated at different temperature and various time. It was found that the tracks length and tack density decrease with the increasing of annealing time and annealing temperature. 2020
895 Nawy Han Myat Thin STUDY ON DIFFERENT PYROLYSIS TEMPERATURES OF DRACONTOMELON DAO (PACIFIC WALNUT) BIOCHAR Biochar derived from biomass waste is accepted as multifunctional material for various applications according to its specific characteristics. It is therefore popular to investigate biochar properties under the improvement of research application. In this study, biochar derived from Dracontomelondao fruit shell (DD nut) (English: Pacific Walnut) from Moe Nyin Township, Kachin State was prepared by different pyrolysis temperatures (400, 500 and 600ºC) at one hour each. Structural properties of the resulted biochar were characterized by X-ray Diffraction (XRD) technique, infrared spectroscopy (FTIR), and Scanning Electron Microscopy (SEM) technique. Changes in properties of Dracontomelondao biochar with different temperatures were investigated. 2020
896 Htay Htay Win REEN SYNTHESIS AND CHARACTERIZATION OF ZINC OXIDE FROM Ixora Coccinea LEAF EXTRACT AND ITS APPLICATION Zinc oxide particle was synthesized from Ixora Coccinea Leaf (Pone Na Yeik) extract and zinc acetate by biological method. The product was confirmed by X-ray diffraction (XRD), and UV–Vis spectroscopy. Dye Sensitized Solar Cell (DSSC) was assembled by the green prepared ZnO and Ixora Coccinea petal (Pone Na Yeik flower) pigment. In this work, the green synthesis of zinc oxide was used as photoelectrode while carbon counter electrode was applied. After DSSC architecture, JSC (short-circuit photocurrent), VOC (open-circuit photovoltage), FF (fill factor) and ? (efficiency) were investigated from the current - voltage (I-V) measurement. 2020
897 Min Zaw Lin ANALYSIS OF OPTIMUM TILT ANGLE OF SOLAR POWER PLANT IN MINBU (MAGWAY REGION) The photovoltaic (PV) panel performance is mainly influenced by its tilt angle, orientation, climatic conditions and geographic location of solar panels, which are used to get the maximum conversion of sunlight into solar electricity. In order to have maximum annual average incident solar energy on the surface of PV system, it is required to determine the optimum tilt angle. Optimization of tilt angle ensures the maximum energy generation output and area of PV modules were calculated. Several simplified design procedures for solar energy systems require monthly average meteorological data. In this paper proposes an algorithm to calculate the optimum tilt angle of solar panels method was developed by S. A. Klein by using NASA Solar Radiation Data Base, consisting of solar radiation and meteorological data all over the world. The output power of solar PV modules with the various incident angle of solar radiation was determined. According to the results, the average optimum angle (the best angle) of inclination of the solar panels is ? = 25? for Minbu solar power plant in Magway region. After completion of study, an optimum plan can be formulated for practical set ups which can lead to maximum efficiency of solar power generation. 2020
898 Saw Moh Moh Oo SOL-GEL SYNTHESIS AND CHARACTERIZATION OF Mn DOPED TiO2 THIN FILMS Manganese (3%, 6%, 9% and 12%) doped titanium oxide, MnTiO2 thin films were prepared by sol–gel synthesis and deposited onto the silicon substrates using spin coating technique. The morphologies of the Mn doped TiO2 thin films were analyzed using scanning electron microscope (SEM) and the surface observation showed a rather good density of grains without cracks. The crystalline phase and particle size of the films were examined by X-ray diffraction (XRD) measurement. The calculated crystallite sizes (by Scherrer’s relation), lattice constants and cell volumes were increased with increasing Mn doping percentage. Furthermore, capacitance-voltage measurements of all the films were performed with varying frequencies (0.1 kHz to 100 kHz) using a LCR meter and the effects of dopant concentration of manganese on the dielectric behavior in MnTiO2 thin films were investigated. 2020
899 May Saw Ohn THE STRUCTURE CALCULATION OF K pp WITH ? * p MODEL The purpose of this research is to investigate the structure of K- pp system by using ? p * model, where * ? is a resonance state of K- p system. To determine the binding energy of this system, Schrödinger equation is solved in two body system, which consists of * ? and proton. In our calculation, the Gaussian basis wave function is used to solve the Schrödinger equation. Phenomenologically constructed potential of ? p * interaction is used in this calculation. The experimental value for the binding energy of * ? is 27 MeV. By using theYamazaki and Akaishi phenomenological potential, the calculated result of the binding energy of K- pp system from the ? p * threshold is 21.17 MeV and level width is 61 MeV. The binding energy of K- pp system from (K- + p + p) threshold is ( 21.17 + E ?* ) 48.17MeV. .By using the DISTO experimental data, the calculated binding energy for K- pp system from ?*p threshold is 78.0457 MeV and level width is 118.4 MeV. The binding energy of K- pp system from (K- + p + p) threshold is ( 78.04 E ?*) = 105.04 MeV. Thus, the calculated results for binding energy of K- pp system are in good agreement with the calculated result of YA and experimental result of DISTO. 2020
900 Aye Thida CALCULATION OF DEUTERON BINDING ENERGY WITH AND WITHOUT PARTIAL WAVE DECOMPOSITION METHODS In this paper, the binding energy of deuteron is calculated by using both with and without partial wave decomposition methods. Firstly, the time independent Schrödinger equation is transformed into Lippmann-Schwinger equation for two-body bound system. This equation is solved by using Gauss-Legendre integration method. In this calculation, Malfliet-Tjon III potential is used and derived the potential matrix element in momentum space. The binding energy of deuteron is calculated by using iterative method. From this research, it is found that our calculated deuteron binding energy by using with partial wave decomposition method is 2.2283 MeV and it is about 4 keV greater than the experimental result. Our calculated deuteron binding energy by using without partial wave decomposition method is 2.2335 MeV and it is about 9 keV greater than the experimental result. The experimental deuteron binding energy is 2.2245 MeV. 2020