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
751 Htike Htike Lin NUTRITIONAL VALUES OF SOME SELECTED SMALL INDIGENOUS FISH SPECIES (SIFS) IN BAWLE KYUN, HTANTABIN TOWNSHIP, YANGON REGION The present study was aimed to investigate the nutritional values of small indigenous fish species. The study was conducted at Nethamein village (17°2´N and 95°49´E) at Bawle Kyun, in Htantabin Township, Yangon Region. The study period lasted from January to December 2018. A total of thirteen small indigenous species were selected for nutritional analysis. The analysis showed the moisture content of studied species ranged from 66.28% (Anabas testudineus) to 82.9% (Heteropneustes fossilis). The ash content was recorded from 1.13% (H. fossilis) to 10.41% (A. testudineus). The protein content of SIS in the present study was examined between 14.16% (Trichogaster pectoralis) and 18.52% (A. testudineus). Regarding the fat content of SIFS was ranged from 0.05% (Notopterus notopterus) to 4.92% (Osterobrama belengeri). The fiber content was ranged from 0-0.08% whereas carbohydrate was ranged from 0-1.15%. The gross energy content in fresh matter basis of small indigenous fish species in the present study was ranged between 66 kcal/ 100g (H. fossilis) and 94kcal/100g (Amblypharyngodon mola). The small indigenous fish species can play a significant role to fulfill the nutrient demand of poorer sections of people of the country. It may be concluded that the small indigenous fish species make a choice based on that information from a consumer point of view. 2020
752 Mg Yan Naung Tun STUDY OF PARASITIC INFECTION IN PIARACTUS BRACHYPOMUS (CUVIER, 1817) IN LAY DAUNG KAN FISH FARM OF YANGON REGION Freshwater fish culture is a major source of aquaculture production in Myanmar. In 2015-2016, the production of freshwater fish at 2.59 million MT (46% of total freshwater fish production). Examination of parasitic infection in freshwater as well as in marine fishes in Myanmar is still required to improve Myanmar aquaculture system. The present study was carried out to isolate and identify of different parasites and prevalence and mean intensity of infection from Piaractus brachypomus. A total of 240 fishes were observed in between August 2017 to July 2018 from Lay Daung Kan fish farm. Skin, gills, eyes, brain, heart, liver, gallbladder, muscles, intestine and kidneys were examined for infection. The isolated parasites were Myxobolus sp.1 and Myxobolus sp.2 were found in gills and gallbladder, Trichodina heterodentata in the gills and skin, Ichthyophthirius multifiliis in the skin and Mymarothecium viatorum and Mymarothecium boegeri in the gills respectively. Highest prevalence of infection was recorded in Monogenea parasites during the study period. 2020
753 Cho Cho Thin HEAVY METALS ANALYSIS OF SOME FISHES IN AYEYARWADY RIVER SEGMENT OF SALAY ENVIRONS A total of 15 fish species which included two surface dwellers, seven mid-water dwellers and six bottom dwellers were collected from Ayeyarwady River segment of Salay environs to analyze elements content in muscle tissue. Study period lasted from January 2014 to December 2014. The concentration of toxic metals (cadmium, lead and arsenic) in muscle of fish specimens and aquatic environs of study area were analyzed three replicates by Flame Atomic Absorption Spectrometer (FAAS) (Perkin Elmer AAanalyst 800 and Winlab-32 software) in Universities’ Research Centre (URC). Seasonal variations of test results were compared with WHO/FAO maximum permissible limits (MPL). In this study, the effects of the seasons on elements accumulation in muscle of fishes were determined. The concentrations of toxic metals in fishes of study area were higher than maximum permissible limits except from rainy season. The concentrations of cadmium and arsenic of water in hot and rainy seasons were higher in the study environs. The concentrations of toxic metal in sediment were lower than the maximum permissible limits (MPL) in all seasons. 2020
754 Thi Thi Han AN INVESTIGATION ON BREEDING BIOLOGY OF FEMALE CLIMBING PERCH, ANABAS TESTUDINEUS(BLOCH, 1792) FROM THANATPIN CREEK, BAGO REGION An investigation was conducted to observe the breeding biology of climbing perch (Anabas testudineus), locally known as Nga-pyae-ma. Monthly samples were collected from Thanatpin creek which situated south from Thanatpin Township, Bago Region through the period from January to December 2018. The highest GSI value for female was 15.74±2.08% in July that indicates the peak spawning season. Size at first maturity for female was 17.2 cm in total length and fecundity was range from 7033 to 93258. Specimens in this study were found to have mature gonads in the dry and wet season months, indicating no seasonality in breeding patterns. Growth ovarian stages i.e. maturity stage III, IV and V occurred from April to September, indicating that mature females were actively spawning throughout these months. The relationship between total length (TL) and bodyweight (BW), fecundity and total length (TL), fecundity and body weight (BW), fecundity and ovary weight (OW) were linear. The present study provides the first information about the breeding biology of female Anabas testudineus because it potentially indicates their current population condition in the study area. 2020
755 Yu Yu Htwe ARTIFICIAL PROPAGATION OF SEABASS, LATES CALCARIFER (BLOCH, 1790) IN MYEIK ARCHIPELAGO Artificial propagation of fish is an alternative to meet increasing demand for food fish. Seabass (Lates calcarifer) is one of the commercially important species in Myanmar. It is fast growing and euryhaline. This fact is seen as a valuable attribute for species enabling its adoption for ponds and cages culture under marine and brackish water environment. This study was conducted to assess the breeder management for artificial propagation of seabass. The study period was from September 2017 to December 2018 in Myeik Archipelago. The breeders were reared for two months before injection to be healthy fish. The male and female spawners were selected and injected hormone which was calculated to males and females, and their body weight. Induced breeding of study species was studied and number of fertilized eggs, per cent of mortality rate and survival rate were observed seasonally. The hatching rate and survival rate of study fish were highest in hot season. Larvae rearing and different diets on larvae were observed. The effects of weather and water parameters of the study area were collected. 2020
756 Cho Cho Khin EFFECT OF SINTERING TEMPERATURE ON STRUCTURAL PROPERTIES OF BETA-TRICALCIUM PHOSPHATE* Beta-tricalcium phosphate material (?-TCP) has excellent biocompatibility for medical science applications as bone substitutes. In this research,?-tricalcium phosphate powders, ?-TCP, were prepared by the wet chemical precipitation method with calcium nitratetetrahydrate, Ca(NO3)2.4H2O, and diammonium hydrogen phosphate, (NH4)2HPO4. The pH of the system was controlled by adding sodium hydroxide solution. The dry precipitate was calcined at 700°C and the pellets were sintered at 800°C, 900°C, 1000°C and 1100°C for 6h each. The phase formations of these samples were characterized by using X-ray Diffraction (XRD) analysis. The crystallite sizes and lattice parameters were estimated from the XRD data. The rhombohedral structure of ?-TCP phase has been stable after sintering upto 1100°C.The crystallite size is in nano-range and increased with increasing temperatures. The morphological feature of the?-TCP samples were studied by Scanning Electron Microscope (SEM). Importantly, the dense microstructure without pores could be obtained at sintering temperature of 1100°C.Fourier Transform Infrared Spectroscopy (FTIR) was applied to study the molecular vibrations of functional groups in ?-TCP. The presence of ?-TCP with the same vibrational modes in all samples has been proved consistently. 2020
757 Myo Myint Aung INFLUENCE OF SOME PARAMETERS ON STABILITY OF COLLOIDAL SILVER NANOPARTICLES Colloidal silver nanoparticles (AgNPs) were prepared using silver nitrate (AgNo3) as a precursor, sodium borohydride (NaBH4) as a reducing agent and Poly Vinyl Alcohol(PVA) a surfactant stabilizing material. By using molar ratios of reducing agents (4mM, 6mM and 8mM) and stabilizing agent in the formation of AgNPs, the influence of parameters such as reducing agent concentration, stirring period on the sample stability and the degree of dispersion of AgNPs were investigated. The quality of the synthesized samples was characterized by UV-Vis and Cyclic Voltammetry measurements. 2020
758 Lei Lei Aung SYNTHESIS AND CHARACTERIZATION OF NICKEL DOPED BISMUTH FERRITE MATERIALS Nickel substituted bismuth ferrites(BiFe1-xNixO3; x = 0.1, 0.2, 0.3, 0.4 and 0.5) materials was synthesized using combustion technique. The synthesized material powders were sintered at 900?C for 4 hours. X-ray diffraction technique (XRD)was used to confirm the nano-crystallite structure and phase formation. The particle size was estimated by the full width half maximum (FWHM) of the strongest X-ray diffraction (XRD) peak. The characterization of these materials was analyzed by Fourier Transform Infrared spectroscopy (FTIR). The optical band gap of these materials was also investigated from the transmittance spectrum. The energy band gap Egis in the range of 4.7 eV to 5.1 eV for prepared samples. 2020
759 Min Maung Maung SYNTHESIS AND MAGNETIC PROPERTIES OF COBALT FERRITE MATERIALS Cobalt ferrite powders with general formula CoFe2O4 was synthesized by sol-gel auto combustion method starting from metal nitrates and citric acid (C6H8O7) as a fuel. X-ray diffraction technique (XRD) was used to confirm the crystallite structure and phase formation. The particle size was estimated by the full width half maximum (FWHM) of the strongest X-ray diffraction (XRD) peak (311). The average particle size was observed in the range of 42 to 54 nm. The scanning electron microscopy (SEM) was used to study the grain size, grain distribution of these samples. The dielectric property measurements were carried out by the help of a LCR meter. The dielectric constant and the loss tangent decreases rapidly with increasing frequency, and then reaches a constant value.The room temperature magnetization and demagnetization measurement was done by PERMAGRAPH L apparatus. 2020
760 Aye Aye Khine STRUCTURAL CHARACTERIZATION OF COBALTDOPED BISMUTH FERRITE MATERIALS Bismuth ferrite (BiFeO3)and cobalt doped BiFeO3(BiFe1-xCoxO3) materials was prepared by combustion method. The X-ray diffraction (XRD) method confirmed crystalline phase and crystalline size of these materials. The average crystallite size was obtained 30.26 nm. The shifting of peaks to higher angles was observed in cobalt doped BiFeO3. The formation of bonding structure was also identified by Fourier Transform infrared Spectroscopy (FTIR), it confirms the existence of Fe-O and Bi-O bands. The energy band gap was also evaluated from the measurement of UV spectrophotometer. It was observed that the increase in optical band gap with increasing in cobalt doping concentration in the BiFeO3 structure. 2020