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
921 San San Wai SYNTHESIS AND CHARACTERIZATION OF ZnO NANOPARTICLES AT DIFFERENT CALCINATION TEMPERATURES BY SOL-GEL METHOD In this work, zinc oxide nanoparticles were synthesized by using sol-gel method at calcination temperatures of 400?C and 500?C. Sol-gel method is the simplest method and has the ability to control the particle size and morphology through systematic monitoring of reaction parameters. Zinc oxide nanoparticles were synthesized via sol-gel method using zinc acetate dihydrate [Zn(CH3COO)2.2H2O] as a precursor and methanol as a reagent. Distilled water was used as solvent medium and ammonia was used to adjust the pH value. And then the obtained samples were characterized by X-ray Diffraction (XRD) to confirm the formation of ZnO phase, which showed that it had this type of hexagonal wurtzite structure. In the comparison of the crystalized sizes of the samples, the sample calcinated at 500?C have smaller crystalized size than the sample calcinated temperatures at 400?C. The Scherrer’s equation was used to calculate the crystalized size of the ZnO powder. And then, scanning electron microscopy (SEM) was used to observe the surface morphology of obtained ZnO nanoparticles. 2020
922 Su Mon Oo EFFECTIVE AND EFFICIENT REMOVAL OF METHYLENE BLUE DYE BY ZEOLITE ADSORBENTS The application of mordenite zeolite and composite fiber as an adsorbent for the removal of aqueous methylene blue (MB) dye at room temperature was investigated. Effects of operational parameters including different contact time and different initial concentrations (Ci) of dyes on removal efficiency and adsorption amount of MB were determined. The characterization tools such as Fourier transform infrared (FT-IR), X-ray diffraction (XRD) and scanning electron microscope (SEM) were performed in order to identify the functional group, study the crystal structure and investigate the microstructure of zeolite adsorbents. Adsorption parameters were found out to be well fitted into Langmuir adsorption isotherm. The present work suggests that zeolite adsorbents could effectively remove MB dye. Thus, zeolites are good candidates for the removal of such organic pollutants. 2020
923 Khin Mar Win AUTOMATIC ANTIBACTERIAL CLOTHES DRYER SYSTEM UTILIZING ULTRAVIOLET (UV) LAMP The antibacterial clothes dryer system is designed and constructed for killing the bacteria which make the bad smell in clothes. The system contains the clothes holder attached with motor dryer and ultraviolet (UV) lamp with a keypad lock. It is also designed to control the bacterial killing time and drying time of the wet clothes. The hardware of the lock system is designed and simulated by the Proteus 8.6 software and it is constructed by using PIC16F887 microcontroller, an 8 MHz crystal oscillator, 4×4 keypad, 16×2 LCD module, ultraviolet (UV) antibacterial Lamp, piezo sounder, relay, some active and passive components. The firmware for the lock system is written by Mikro Basic Pro programming language. The system permits to operate the UV antibacterial lamp for twenty minutes and motor dryer for thirty minutes as the instruction of the controlled program as soon as the keypad lock is unlocked. The presence of bacteria in clothes is observed by EC-1001-P-HLED Eco Blue microscope. The observation results show the antibacterial process in clothes is very effective by using ZW30S19W UV lamp. 2020
924 Tun Soe RADON MEASUREMENTS OF WATER SAMPLES AT SOME LAKES FROM MANDALAY REGION The aim of the present work is to carry out the radon concentration of water at some lakes from Mandalay Region and annual dose received by the people. Water samples from Sedawgyi, moat of Mandalay, Kandawgyi and Taungthamann were collected. Radon level in raw water (40 mL) was measured with RAD7 continuous radon monitor. By verification of the results, it can be checked out whether the WHO recommended permissible level (100 pCi/L) was exceeded or not. Mean radon concentration of the water samples are 10.6 pCi/L, 16.0 pCi/L, 10.7 pCi/L, 8.0 pCi/L and do not exceed the safe limit level. However, continuous monitoring of radon concentration is basic description of public water safety. 2020
925 Phyu Phyu Mar THE AUTOMATIC INCLIENE PLANE TO MEASURE THE COEFFICIENT OF STATIC FRICTION FOR TEACHING AID Today one of core science subject being offered in Myanmar schools is Physics and it forms the basis for the nations technological Subject and human resource development. This paper discusses the improvement of teaching aid in practical works. The automatic finding of the coefficient of static friction is designed by using inclined planed and Arduino technology. It is simple and very affective to describe the basic principle of static friction. The data are collected easily, show clearly and précised and accurate. The measured time is quickly done by this method. This design can be supported affectively in teaching to understand and linking between Physical Phenomenon, theory and practical for students in all educational fields. 2020
926 Ei Shwe Sin Oo EFFECT OF pH LEVEL ON THE FORMATION OF SILICA AEROGEL SYNTHESIZED FROM RICE HUSK ASH Silica aerogel has been synthesized from rice husk ash via water glass solution by using sol-gel method. The synthesized silica aerogel at different pH level are characterized by X-ray diffraction (XRD) to analyze the structure formation of silica aerogel. The function group of the products are characterized by Fourier Transform Infrared Spectroscopy (FTIR). The particle sizes of silica aerogel are characterized by scanning electron microscopy (SEM). XRD result shows that the silica aerogel particles prepared at pH 7 has the capability to extract complete SiO2 from rice husk ash with a great quantity of amorphous silica. SEM result indicates that the particle size of the silica aerogel increases at pH 5 and pH 9 and decrease at pH 7. The results show that the synthesis of silica aerogel from rice husk ash has porous structure and the particle size of silica aerogel depend on the effect of pH level. 2020
927 Kalayar Win DESIGN AND CONSTRUCTION OF THE INTENSITY BASED SOLAR TRACKING SYSTEM USING PIC 16F887 MICROCONTROLLER Solar energy is abundantly available Renewable Energy Source harnessed in all areas of the world and it is available every day. Energy produced by Photovoltaic system is used in many industrial and domestic applications. The sun position can be tracked based on the intensity of light and the power generating capability of the system can be increased. This paper presents the hardware implementation of the solar tracking system by using PIC microcontroller. An efficient and accurate DC motor control system is used to increase the system efficiency and reduces the solar cell system cost. The proposed automatic DC motor control system based on PIC 16F887A microcontroller is used to control the photovoltaic (PV) modules. This DC motor control system will track the sun rays in order to get maximum power point during the day using direct radiation. A photo cell is used to sense the direct sun radiation and feedback a signal to the PIC 16F887A microcontroller, and then the decisions are made through the microcontroller and send a command to the DC motor control system to achieve maximum power generation. The proposed system is demonstrated through simulation results. Finally, using the proposed system based on PIC microcontroller, the system will be more efficient, minimum cost, and maximum power transfer is obtained. 2020
928 Tin Mar Yu DETERMINATION OF DENSITY DISTRIBUTION AND ROOT MEAN SQUARE RADII FOR LIGHT NUCLEI USING WOOD-SAXON AND HARMONIC OSCILLATOR POTENTIAL The main purpose of this study is to investigate the nuclear charge density distribution corresponding proton, charge, neutron, matter and root mean square radii for light nuclei such as 4He, 12C and 16O. A detail series of calculations were carried out using the single particle reduced radial wave function and radial wave function by Numerov method. The density distributions and root mean square radii of neutron, proton, matter and separation energies for stable nuclei have been calculated by using Woods-Saxon potential and Harmonic- Oscillator potential with FORTRAN LANGUAGES. In order to compare the calculated results of density distributions, root mean square radii and separation energies for light nuclei with the experimental data and other literatures. 2020
929 Htike Nandar Kyaw KINEMATICAL ANALYSIS OF SINGLE-? HYPERNUCLEI WITH NEUTRAL PARTICLE DECAY PRODUCTS IN NUCLEAR EMULSION In this research work, five single-^ hypernuclei which were detected in nuclear emulsion of KEKPS E373 experiment are analyzed by applying relativistic kinematics. The analyzed single-^ hypernuclei decayed into a charged particle and invisible neutral particles. The ranges and position angles of charged particle tracks are firstly measured in nuclear emulsion. To perform kinematical analysis, both mesonic and non-mesonic decay of single-^ hypernuclei are taken into account. The kinetic energy and momentum of charged particle decay products are extracted by range-energy relation and that of neutral particles are calculated by momentum conservation. Moreover, possible masses of single-^ hypernuclei are deduced by mass-energy relation equation. Due to contamination of neutral particles, the single-^ hypernuclei cannot be identified uniquely and the calculated masses are slightly less than known masses within the acceptable limit. According to our analysis, it is found that the possible species of single-^ hypernuclei are either H 3 ^ (or) H 4 ^ and their decay products of charged particles are possible to be proton (or) deuteron. 2020
930 Myat Shwe Wah GRAPHENE GROWTH ON COPPER BY CHEMICAL VAPOR DEPOSITION Synthesis methods are needed for its growth on wafer scale to bring graphene to the production level. One of the more promising production techniques to synthesize large area graphene is chemical vapor deposition (CVD) onto transition copper substrates. Recently copper has gained popularity as an important substrate material for graphene growth due to its lower carbon solubility, which allows better control over number of graphene layers. CVD growth has been performed at temperatures ranging from 1000.C to 1050.C using methane as the carbon source with diluted in a suitable mixture of argon (Ar) and hydrogen (H2). It was found that apart from growth parameters surface texture plays a very important role in graphene growth. The growth mechanism of graphene on copper is surface related and surface morphology was determined by Scanning Electron Microscopy (SEM) and Raman spectroscopy was used to distinguish number of layers on gaphene deposition on copper foil. 2020