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
401 Hnin Nu Aye CONSTRUCTING A COUPLED CHANNEL ??N - ? ? SEPARABLE POTENTIAL The purpose of our research is to determine the ??N potential parameters which reproduce the experimental binding energy and level width of ?(1405) resonance as well as the ??N scattering parameter. ?(1405) has been interpreted as a ??N 1quasi-bound state which is embedded in the ? ? continuum. Particle Data Group (PDG) interpreted on the experimental finding of K-p bound state that ?(1405) is located around 1405MeV. Chiral dynamics claimed that there appears two poles in ??N- ? ? coupled channel system. The first pole is located around 1420MeV mainly coupled to ??N channel and the second pole is located around 1320MeV mainly coupled to ? ? channel. The position of ??N bound state is a still controversial issue. In order to get information about the ??N interaction, the parameter set 1 which satisfies the PDG data and the parameter set 2 which satisfies the Chiral model’s result for single channel are constructed by solving the Schrödinger equation with Yukawa-type separable potential. For the coupled-channel system, 2the optical potential is constructed based on the Feshbath theory and the parameter set 1 and set 2 of the optical potential are investigated. In our research, we assumed that the range parameters ? 1 and ? 2 are the same and the interaction between ? ? - ? ?: V22=0. Our calculated scattering length is consistent with the empirical value at the mass of exchanged boson; 600MeV/c2 for set 1 and 670MeV/c2 for set 2. For the coupled channel system, the parameter set 1 are ? = 3.041fm-1, S11 = -1.074, S12 = 0.707 and U0 = -3.063 –i0.466MeV.fm3 while the parameter set 2 are ? = 3.395fm-1, S11 = -0.890, S12 = 0.733 and U0 = -2.476 – i0.428MeV.fm3. 2019
402 May Thawda Phoo SYNTHESIS AND CHARACTERIZATION OF COPPER ZINC SULPHIDE (CuZnS2) THIN FILMS The Copper Zinc Sulphide (CuZnS2) films were fabricated with and without complexing agents (EDTA and TEA) by chemical bath deposition method. Incorporation of complexing agents provided the higher optical absorption, lower band gap energy, and smoother surface of CuZnS2 thin films. In addition, varying the concentration of precursor solution (0.5 – 1.5 M) and dipping time (24 – 72 hrs) the optical property and surface topography of thin films were investigated. The concentration ( 0.5 M ) and dipping time (48 hrs) provided the lower band gap energy of 2.0 eV and RMS surface roughness of 0.93 µm which are key requirements for light absorber layer in solar cells. 2019
403 Moht Moht Than STRUCTURAL, MORPHOLOGICAL AND MOTT-SCHOTTKY CAPACITANCE ANALYSIS OF PEROVSKITE TYPE SrTiO3, CaTiO3 AND BaTiO3 THIN FILMS ON ITO GLASS* Phase-pure perovskite type SrTiO3, CaTiO3 and BaTiO3 thin films are deposited on ITO coated glass substrate by using sol-gel process and spin-coating technique. The samples are studied by structural, morphological and electrical characteristics. The X-ray diffraction spectra of SrTiO3, CaTiO3 and BaTiO3 thin films on ITO glass shows that the perovskite type cubic structures with preferred orientation along (110) plane. The surface morphological is investigated by scanning electron microscopy (SEM), which revealed the crystalline nature of the films. The lattice parameters, unit cell volume, crystallite size, dislocation density, strain and grain size are evaluated. Mott- Schottky capacitance analysis is adapted to determine the built-in voltage (Vbi) and doping density (NA) of the perovskite thin film devices. The influence of the Schottky contact is studied for perovskite thin films devices, by using capacitance-voltage measurement at frequency 10 kHz. Furthermore, the depletion region widths of the thin films devices are also evaluated. 2019
404 Ni Ni War QUANTITATIVE ANALYSIS ON THE ELEMENTAL CONCENTRATIONS AND INTERMOLECULAR STRUCTURE OF SHAZAUNG-LET-PAT (ALOE VERA LINN.) The purpose of this research work was to study the elemental cocentrationand mode of chemical group between the possible vibrational frequencies in parts of Aloe vera plant by using Energy Dispersive X-ray Fluoresence (EDXRF), Fourier Transform Infra-Red (FTIR) and Ultraviolet and Vissible (UV-vis) Spectroscopy techniques. Hydrogel films composed of polyvinyl alcohol(PVA) and Aloe vera(AV) gel were prepared and characterized by different ratio of PVA/AV hydrogel films 1:1, 1:2and 1:3 variations in the Aloe vera content. From the the results obtained that Aloe vera improves the water absorption rate of the films. and average equilibrium water content is 84.67%. The morphological characterization of the film by Scanning Electron Microscopy (SEM) analysis. 2019
405 Thida Pyone AUTOMATIC LIVER SEGMENTATION WITH FILTERING AND MORPHOLOGICAL METHODS The main contribution of this paper is automatic liver segmentation which is the important step of liver benign or malignant classification. Morphological based automatic liver segmentation algorithm is proposed to get better classification results. Two popular image enhancing methods such as image filtering and morphological methods are used. It is required to remove texts in images by enhancing with image filtering method which extracts all connected liver components. In this research, automatic liver segmentation has been conducted to enhance liver image by image filtering and morphological operations such as image opening, dilation and filling holes. Liver region is segmented from the(512*512) pixels abdominal CT liver images. This accuracy result is acceptable for liver segmentation. 2019
406 Khin Mar Win WALKING STICK WITH INTELLIGENT CONTROL SYSTEM Awalking stick with intelligent control system is designed and constructedfor the purpose to help the blind persons. The system is capable of avoiding any obstacle in the way for a blind person. The system operates by combination of the function of hardware and firmware. The hardware of the system consists of the ultrasonic motion sensor HC-SR04module, the light sensor (LDR), the water sensor module and buzzer. The ARDUINO MEGA 2560 development board is used to control all sensors’ operationsand gives an output alert for each sensor to the blind person. Besides, the system is contributed by GPS (Global Positioning System) and GSM (Global System for Mobile communication). The control program is written in C programming language. Furthermore, someone can find out the position of that walking stick because of the GPS and GSM facility. 2019
407 Nyein Thida GSM BASED AUTOMATIC GREENHOUSE CONTROLLED SYSTEM A scaled-down prototype of the GSM based Automatic Greenhouse Controlled system using Auduino board was build and tested. The automated greenhouse control system achieves monitoring and control of a greenhouse environment by using sensors and actuators which are under the control of a microcontroller. The codes for the controller were written in the Arduino programming language, debugged, complied and burnt into the microcontroller using the Arduino integrated development environment (IDE). The microcontroller ensures that the microclimatic parameters stay within pre-defined values as determined and set by the user. The climatic conditions of the greenhouse and state of actuators are transmitted to the remote monitoring station via a GSM (MODEM). 2019
408 Saw Shine Ko TO STUDY THE ROLE OF STRUCTURAL AND ELECTRICAL PROPERTIES OF ZnO/Cu2O/ITO CORE- SHELL NANOSTRUCTURE SOLAR CELLS In this work, Zinc Oxide Core layer films and Cu2O Shell layers were synthesized by using both Chemical Bath Deposition techniques and Spin Coating Method. X-ray diffraction techniques were used to examine the lattice distortion, dislocation density and position parameters of deposited Core-Shell layers upon Indium Tin Oxide glass substrates. Scanning Electron Microscopy (SEM) study provides morphological of the sample surfaces. The photovoltaic properties of these Core-Shell nanostructure solar cells were investigated by current density-voltage characteristic. The power conversion efficiency (PCE) was influenced by the open-circuit voltage. 2019
409 May Sandar Win SCANNING ELECTRON MICROSCOPY AND CURRENT-VOLTAGE CHARACTERISTICS OF CaMn(CO3)2 /n-Si THIN FILM Mn(20mol%) doped CaCO3 ceramic was first prepared by solid-state reaction method at 1000°C for 1 h. The prepared Ca0.80Mn0.20(CO3)2 was deposited on n-Si substrate by using thermal diffusion technique at 400°C for 1 h. Surface morphology of the Ca0.80Mn0.20(CO3)2/ n-Si film was investigated by Scanning Electron Microscope. Surface morphology, grain shape, grain size and diffusion layer thickness of the film were studied in this work. In addition, current-voltage characteristics of Ca0.80Mn0.20 (CO3)2/ n-Si thin film were investigated in dark and four different illuminations of light source. Output currents were observed in the bias voltages of (-5 V - +5 V) with the step voltage of 0.2 V. Light sensitivity and output currents of the film were reported in this work. 2019
410 Sandar Oo REVERSE MOVING CONTROL SYSTEM BY USING BLUETOOTH MODULE The “Reverse Moving Control System” is mainly implemented by using Arduino UNO microcontroller board and ultrasonic sensor (HC-SR04). The peripheral components are liquid crystal display (LCD), light emitting diodes (LEDs), piezo buzzer and Bluetooth wireless module (HC-06). The ultrasonic sensor transmits and receives the signals from the obstacles near the automobile. The signal is then sent to the UNO board which is the main controller of the whole system. The distance between the automobile and the obstacle is calculated by Arduino IDE software. The output data is sent to piezo buzzer, LCD and LEDs. Bluetooth module is used to control the moving of automobile in back and forth direction. It is a connection module between automobile and android mobile phone. This device intends to protect the automobiles from accidents during parking. It can also be modified as a backup camera in modern cars. 2019