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
791 Yin Yin Myint MATLAB IMPLEMENTATION AND ANALYSIS OF ELECTROCARDIOGRAM (ECG) SIGNALS In this work, the MATLAB software has been developed to measure electrocardiogram (ECG) signal and to analyze the measured signals. The measurement system consists of three electrodes connected to the ECG sensor (AD8232), data acquisition card (Atmega328 Board) and a laptopcomputer. The code for the data acquisition card is tested with the developed MATLAB software. The software includes acquisition of real time ECG data, ECG signal processing and calculating beat rate. The measured signals are recorded in the desired path of the computer. The results are compared with standard data and then show that the system yields equal results compared to the reference measurements for patients at rest. The usability of the system is excellent due to simple three-arm electrode solution. The system can be used for home health care application. 2020
792 Aye Sandar Oo SYNTHESIS AND CHARACTERIZATION OF SnO2 NANOPARTICLES Tin Oxide, SnO2 nanoparticles have been synthesized by sol-gel auto combustion method in this work from SnCl4.5H2O, NH4OH and distilled water. After preparation the powder has been calcined at five different temperatures (400oC, 500oC, 600oC, 700oC and 800oC) for 1 hour. Then, the phase analysis identification has been conducted by X-ray Diffraction Analysis (XRD). Besides, Fourier Transform Infrared Spectroscopy (FTIR) analysis has been conducted after synthesis. FTIR spectrum shows the molecular vibration of SnO2 nanoparticles. Moreover, the microstructure of the sample has been characterized by Scanning Electron Microscope (SEM). 2020
793 Hnin Hnin Aye CONCENTRATION OF HEAVY METALS IN WASTEWATER, SOIL AND RICE SAMPLES FROM TAUNG IN LAKE NEAR MANDALAY INDUSTRIAL ZONE II To estimate the heavy metals concentration presence in the water, soils and the rice grown on the soil, the samples are collected from Min Ywa (MY), Nyaung Ni Bin (NNB), Nyaung Bin Zauk (NBZ) and Inn Gone (IG) villages. Theses villages are located in Mandalay Industrial Zone II and are assigned as study areas in our research work. The collected samples are analyzed by using Atomic Absorption Spectrophotometer (AAS). The results showed the 5 elements (Fe, Cu, Zn, Pb and Cd) exist in soil and rice samples. Mn, Fe, Cu, Zn and As concentrations in wastewater exceeded the permissible limit by WHO. Transfer values of soil to rice ranged from 0.001-0.004 for Fe, 0.282-0.577 for Cu, 0.371-0.658 for Zn. But Pb and Cd are not listed because they are below the detectable limit. 2020
794 Khin Thi Tar Winn ASSESSMENT OF NATURAL RADIOACTIVITY AND RADIATION HAZARDS IN SEDIMENTS FROM MEIKTILA LAKE In this present study, the natural radioactivity levels of sediments from Meiktila Lake, Meiktila Township, Mandalay Region have been investigated by using HPGe detector and analysed with the Gamma Vision-32 The radium equivalent activity, the absorbed dose rate and external hazard in each sample was calculated to assess the radiation hazard for people. All sample have shown radium equivalent activity ranged from 157.30Bq kg-1 to 181.80Bq kg-1 . The observed values of radium equivalent activity for all samples were less than the permissible limits of 370 Bq kg-1 . The values of calculated absorbed dose rates in the samples under investigated are ranged from 97.10 nGyhr-1 to 112.26 nGhr-1 . The value of absorbed dose rate for all samples were higher than the average global terrestrial radiation of 55 nGhr-1 . But the calculated values of external hazard index values for all samples were less than the permissible value 1.0 mSvy-1 . 2020
795 Htar Win Htike ESTIMATION OF RESONANCE POSITION OF THE C 12 ? HYPERNUCLEAR SYSTEM WITH COMPLEX SQUARE WELL POTENTIAL BY USING GREEN’S FUNCTION METHOD In this research, differential cross section of C(K,?)? C 12 12 6 reaction is formulated by Green’s function method. Imaginary part of this formulation, called spectral function, gives the spectral shape of this reaction. From the spectrum, the resonance position of the reaction is investigated. Green’s function for this reaction is numerically solved. Then the spectral function is calculated and the various spectral shapes are investigated with simple case of complex square-well potentials. The resulting spectral shapes are compared with those of Morimatsu and Yazaki, obtained by analytically solved Green's function. It was observed that the spectral shapes obtained by both methods, i.e., numerical and analytical, are almost identical. This fact shows an advantage of numerical method in cases where analytical solutions are not possible. 2020
796 Lae Lae kyaing INVESTIGATIO NO NPOLARIZATION OF LIGHT IN THE PRESENCE OF A WEAK EXTERNAL MAGNETIC FIELD Degree of polarization of scattered line radiation in the presence of the magnetic field was investigated. The Stokes parameters of the scattered radiation incident on an arbitrary polarized atom in any given arbitrary direction were calculated. It was considered that the polarization of scattered line radiation from an upper atomic level with angular momentum Ju = 3/2 to a lower atomic level with angular momentum J? = 1/2 transition. This line has transition of both type electric dipole transition and magnetic quadrupole transition. Only the electric dipole transition was considered for upper and lower atomic levels having different parities. The degree of linear polarization of scattered radiation in the presence of weak external magnetic field was calculated. In this calculation, the lower level polarization was neglected. The obtained results were compared with experimental results as well as theoretical results. It was found that the obtained results agree well with these results. 2020
797 Win Mar INVESTIGATION OF EXTERNAL RADIATION DOSE RATE FROM PATIENTS TREATED WITH IODINE 131(131I) Radioisotopes are widely used to diagnose disease and as effective treatment tools. Since many years radioactive iodine 131I has been used to treat thyroid disease. The external measurements of dose rate (µSv/hr) of thyroid cancer patients for various distances are obtained at Department of Nuclear Medicine in Yangon General Hospital. These results are satisfied the inverse square law. From these results the maximum permissible exposure time for various distances from thyroid cancer patients are calculated. It is found that the maximum permissible exposure time is the longest time for the people that stay away from the patients after giving iodine treatment. Finally, it is concluded the further from the patients treated iodine, the longer the maximum permissible exposure times. 2020
798 Thidar Nyunt COMPARATIVE STUDY ON THE STRUCTURE OF K2ZnCl4 CRYSTAL DETERMINED FROM SINGLE CRYSTAL AND POWDER X-RAY DIFFRACTION Crystal structures of dipotassium tetrachlorozincateK2ZnCl4 (KZC )was determined by both single crystal x-ray diffraction (SXRD) and powder x- ray diffraction (PXRD) techniques. KZC single crystals were grown by slow evaporation method. The obtained structural inform from SXRD had approximately the same precision as the PXRD technique. In the structure refinement, final values of R and Rw indice converged to 0.076 and 0.184. Structure analyses revealed that KZC sample possess the slightly distorted ZnCl4 tetrahedra. 2020
799 Nyein Nyein SILVER NANOPARTICLES LOADED TiO2 NANOTUBE ARRAYS PREPARED BY PHOTODEPOSITION METHOD FOR PHOTOELECTROCHEMICAL CELL In this study, TiO2 nanotube arrays (TNTs) were fabricated by anodizing of Ti foil in NaOH/fluoride/EG electrolyte at 60 V for 60 min while dispersion of Ag nanoparticles on them were performed by photodeposition method. The morphology and crystal structure of pure TNTs and Ag decorated TNTs (Ag/TNTs) were then studied. The assembly was then used as a photoelectrode in the photoelectrochemical cell to measure the photocurrent and generate hydrogen gas. The addition of NaOH into electrolyte resulted in the formation of highly ordered TNTs with the length of 23 µm and diameter of 170 nm. Dispersion of silver nanoparticles through photodeposition was performed in order to enhance photoelectrochemical performance. Enhanced photocurrent of 5.0 mA/cm2 was achieved using Ag/TNTs compared to 3.2 mA/cm2 of pure TNTs. The conversion efficiency as measured by solar to hydrogen measurement was found to be 4% for pure TNTs and 6 % for Ag/TNTs. The enhancement thought to be due to enhanced charge separation efficiency and improved electrons transport. 2020
800 Zin Mar Lay BLUETOOTH - BASED CONTROLLED CAR USING ARDUINO In this research, the designed and constructed controlled car with automation system using Bluetooth is discussed. The control unit is the Arduinouno board. The HC-06 Bluetooth module activates wireless communication with android phone. It is ready to transmit and accept the data. The Bluetooth module operates data exchange from android phone to Arduino. An android operates using android application software. The Arduino activates using Arduino programming language and it receives the data from Bluetooth . The Arduinocommands the motors of controlled car via motor driver circuit. The Arduino controls the car to activate backward, forward, left side and right side directions according to the receiving data from android phone. This research is a combination method of embedded system and technology of android. 2020