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
2321 Aung Kyaw Min, Tin Aung Kyaw, War War May Zin , San San Aye, Cho Cho Than INVESTIGATION OF SOME PHYTOCHEMICAL AND BIOLOGICAL ACTIVITIES OF OROXYLUM INDICUM (L.) BENTH (KYAUNG-SHA) FRUITS The present research is concerned with some phytochemical and biological investigation of crude extracts from Oroxylum. Indicum (L.) (Kyaung sha) fruits. Preliminary phytochemical investigations by test tube methods revealed the presence of alkaloids, ?–amino acids, carbohydrates, flavonoids, glycosides, organic acids, phenolic compounds, reducing sugars, saponins, steroids, tannins, and terpenoids, and the absence of starch in the tested samples. The total phenol contents of watery extract of fruits were determined by the Folin-Ciocalteu reagent (FCR) method. Gallic acid (3,4,5- trihydroxy benzoic acid), was used to construct a standard calibration curve for total phenol. TPC contents (?g GAE/mg) were found to be the highest content (51.28 ? 0.41). The total flavonoid contents of watery extract of fruits were determined by the aluminum chloride method. Quarcetin was used to construct a standard calibration curve for total flavonoid. TFC contents (mg QE/g) were found to be highest content (36.05 ? 1.2). The watery and ethanol extracts of the fruits were observed to possess antioxidant capacity by the DPPH assay method, with the watery extract having more potent antioxidant activity (IC50 = 18.28 ?g/mL) than other tested samples. Moreover, the watery extract also exhibits higher antidiabetic activity, expressed in terms of ?-amylase inhibitory (IC50 = 106.85 ?g/mL than other tested samples. In the antimicrobial screening by agar well diffusion method, petroleum ether and ethyl acetate extracts were found to possess high activity against all tested microorganism with the inhibition zone diameters ranging between 18 mm ~ 23 mm but other crude extracts of fruits had mild activity. According to the result, O. indicum (Kyaung sha) fruits contain the highest amount of phytochemical constituents, so these selected fruits have more portent antioxidant, antidiabetic, and antimicrobial effects. 2024
2322 Win Thi Yein, Qun Wang NOVEL COBALT SULFIDE-ETHYLENEDIAMINE NANOSHEETS FOR ADSORPTION-ASSISTED HEXAVALENT CHROMIUM REMOVAL Hexavalent chromium, Cr (VI), contamination of wastewater is a great threat to living organisms and environment. Hence, the innovative advancement in the removal of Cr(VI) from wastewater is urgently on demand. The current research studied the influence of morphological and structural properties of CoS nanoadsorbents on the adsorption efficiency of Cr(VI) removal. The prepared CoS nanoadsorbents were synthesized with one-pot solvothermal/hydrothermal route without using toxic and harmful chemical reagents. The morphological and structural properties of prepared CoS nanoadsorbents were investigated by using various analytical techniques including Scanning Electron Microscopy (SEM), X- ray Diffraction (XRD) and FT-IR spectroscopy. The inorganic-organic hybrid CoS/En-nanoflowers gave the highest Cr(VI) removal efficiency from aqueous liquid compared to that of its counterparts such as CoS-nanorods and CoS-nanoflowers within 40 min. The Cr(VI) adsorption capacity of CoS/En-nanoflowers was found to be 87.7 mg/g and the adsorption process followed the pseudo-second-order kinetic model. Based on the theory of hard and soft acid-base (HSAB) and zeta potential results, the mechanism of Cr(VI) removal was suggested as electrostatic attraction between CoS/En surface and Cr(VI). 2024
2323 Phyu Phyu Tun DEVELOPMENT OF A NOVEL MATERIAL MONTMORILLONITE SUPPORTED BISMUTH VANADATE NANORODS HETEROSTRUCTURE WITH HIGHLY EFFICIENT PHOTOCATALYTIC ACTIVITY FOR THE TREATMENT OF DYE Clay minerals supported semiconductor based photocatalysts have drawn wide attention for its economical, feasible and excellent reaction activity in photocatalytic process and for the detoxification of environmental pollutants. In this study, visible-light responsive montmorillonite (MMT) supported BiVO4 heterostructure photocatalyst having superb photocatalytic activity was synthesized via typical hydrothermal method. The optimum nanocomposite with 40 wt% BiVO4/MMT exhibited around 4.17 times higher photodecomposition efficiency for Methyleneblue (MB) over the as-synthesized bare BiVO4, respectively. The enhancement of photocatalytic activity could be credited to sound absorption of visible light spectrum due to the narrow bandgap of BiVO4, formation of additional active sites and enlarged specific surface area facilitated by MMT support, and strong interface interaction between BiVO4 and MMT which is confirmed by XPS analysis. The catalyst efficiently performed well over a wide pH scale range 3-10 in the photodecomposition process. Moreover, the possible photocatalytic mechanism of BiVO4/MMT nanocomposite towards the degradation progress was discussed and inferred that both ?O2- and ?OH were dominant reactive species. The study might provide insight in designing visible-light driven clay minerals supported semiconductor based photocatalyst system for the wastewater treatment and environmental remediation. 2024
2324 Nay Yee Nyunt Oo, Win Thi Yein, Soe Soe Than BIOENERGY STUDY ON GRASS (Pennisetum Hordeorides Lam.) Hydrothermal treatment is one of the environmentally friendly methods for the conversion of biomass into valuable end products such as biofuel, hydrochar and biochar. In this research work, hydrothermal treatment of grass (Pennisetum hordeorides Lam.) was carried out at 100?C to 140 ?C for 20 min to 40 min as the preliminary step to provide bioenergy products such as bioethanol and biochar. The maximum reducing sugar content of liquid fraction, 43.46 mg/mL was achieved after hydrothermal treatment at 110 ?C for 30 min and further yeast fermentation of reducing sugar was accomplished to obtain 2% by volume of bioethanol. Carbonization of solid residue after hydrothermal treatment was conducted for biochar at different temperatures (300 ?C, 400 ?C and 500 ?C) and times (0.5 hr, 1 hr, 2 hr, 4 hr, 8 hr). Characterization of grass such as cellulose, hemicellulose, and lignin contents before and after hydrothermal treatment was conducted. High heating value (HHV) and energy densification were evaluated for energy values of biochar. The maximum HHV (26.78 MJ/kg) and energy densification (1.28) had resulted for the carbonization temperature of 500 ?C for 2 hr. The changes in surface morphology and functional groups in raw grass, HTG and biochar were observed by Scanning Electron Microscopy (SEM) and by Fourier Transform Infrared Spectroscopy (FTIR). 2024
2325 ? ????? ??? ?? ?????? ?? ? ?? ?? ? ?? ?? ??? ???????????? ??????? ???? ?? ????? ? ????????? ??? ? ? ? ?? ??? ????? ??? ??????? ?? ????????????? ???? ??? ??? ?? ??? ?? ????? ???? ??? ? ???? ??? ? ??? ???? ???? ??? ? ? ???????????? ?? ? ?? ???? ??? ?????? ?? ? ???? ???? ???? ??? ??????? ??????? ?????? ?????????? ?????? ?? ? ??????? ?????????? ? ??????????????????? ???? ?? ?????? ?? ??? ??? ? ?? ??? ????? ? ?? ?? ?? ????? ?? ?????????????? ?? ???? ?? ?? ?? ??? ?? ? ??? ??? ?? ? ????????????? ?????? ?? ?? ? ?? ? ??????? ? 2024
2326 ? ???? ?? ??? ??????? ?????????????????? ???????????? ?? ???? ??? ??? ?????????????????? ???? ?????? ?????? ??? ????? ????????? ? ?? ????? ??? ??? ?? ??????? ?? ??? ???? ???? ??? ?????? ?????? ? ? ????? ? ??? ?? ?? ??????? ?? ?????????? ? ???? ???? ??? ??? ?? ?? ??????? ?? ??? ? ????? ?? ??? ???? ? ????? ?? ??? ? ??????? ??????????????? ???? ????? ???? ? ????? ?? ?? ???? ?? ?? ?? ??????????????? ????? ???? ? ????????? ?? ??? ??? ???? ? ??????? ???? ????? ?????? ???? ?????? ???? ?????? ??? ???? ? ????? ??? ??? ?? ??? ??? ???? ? ????? ??? ? ???? ?????? ?????? ??? ????? ??? ? ?? ????? ?? ??????? ?? ??? ?????? ?????? ? ??? ???????????? ?? ?????????????? ? ???????? ??????? ? ???? ??????? ??????? ????? ???? ? ? ????? ? ?? ? ????? ?????? ??? ????? ??? ? ????? ? ? ? ? ??? ?? ?????? ????????? ???? ????? ? ??????? ????? ? ? ? ??????? ?????? ????? ????? ?? ?????? ?? ?? ????? ??? ?? ?? ?? ???????? ? ? ???????? ?????? ? ???????? ????? ?? ?????? ? ? ???? ???????????? ? ? ???? ?????? ???????? ? ? ??? ??? ??? ????? ? ??? ????? ? ????? ??????? ??? ?? ?? ??? ?? ????? ? ???? ?? ?????? ? ??? ??? ? ? ????? ?? ????? ??? ??? ? ???? ???????? ?????? ? ????? ?????? ?? ?? ?? ???????? ? ? ?????? ?????? ???? ?????? ?????? ??? ????? ??? ? ?? ????? ?? ??????? ?? ??? ???? ?? ?????? ? 2024
2327 ??? ???? ?? ??????? ?? ???? ?????????? ???? ???????? ??????????? ???? ? ????? ???? ?????????? ?? ????? ?? ???? ??? ????? ??????? ?? ???? ?????????? ? ???? ?? ??? ?? ?? ? ????? ??? ? ????????????????? ???????? ????? ?????????? ?? ????? ?? ???? ?? ? ????? ??????? ?? ???? ??? ??????? ? ??? ??? ??(?)?? ??? ? ?? ????????? ? ?????????? ?? ????? ?? ???? ?? ? ????? ??????? ?? ???? ?????? ????????? ‘?????????? ?’? ‘?????? ’? ‘? ???? ? ???’? ‘?? ???? ’?‘??? ’? ‘?? ???????? ’???? ? ?? ???? ?????????? ??????? ?? ???? ?????? ???????? ????????? ?? ? 2024
2328 ????? ???? ?????? (????? ) ? ?? ???????? ???????? ? ??? ????????? ? ?????? ?? ????????? ????????? ? ?????? ? ?? ?????? ?? ??????????????? ??????????? ?? ??????????? ????????? ?????? ????????????????????????? ??? ??? ?????????? ???? ?? ?????????????????? ????????????????? ?? ?????????????????????? ?? ??????????? ?????? ????? ????? ???? ????????????? ?????? ??????????? ?????? ?? ??????????????????? ??? ? ?? ??????????? ??????????? ??????????? ???????? ???? ?????? ?????? ??????? ???????? ???? ????????? ?????? ???? ?? ? ????????? ????????? ??????????????? ?????????????? ??????????? ????????? ?????? ???????????????? ?? ? ? ?????? ?????????? ???????????? ?? ? ???? ? ?? ????????????????????? 2024
2329 ? ??????? ? ??????? ??? ??????? ??? ?????? ? ? ???????? ??? ??????????? ??????? ??? ????? ??? ????? ? ?????? ?? ???? ?? ???????? ? ???????????????? ??????????? ????? ???????? ??????? (????) ??????? ? ?????????? ?????? ??????? ??? ???? ???? ??????????? ?????????? ???? ?? ???????? ???? ?? ??? ??????????? ???? ???? ????? ??????? ??? ????? ??? ????? ? ?????? ?? ???? ?????? ? ?????? ? ?????? ???????? ???????????????? ? ?????? ?? ???? ????????? ? ?????? ??????????? ??? ?????????? ???? ????? 2024
2330 ? ???? ??????? ????? ????? ???? ???? ???????? ? ?????????????????? ???????? ?????????? ? ????? ????? ??? ??? ?? ???????? ? ????????? ????????? ???????????? ?? ??????? ? ? ??? ????? ?? ? ??? ????????????????? ???? ?????? ???? ? ?? ???? ???? ?????????? ?? ?? ???????? ????? ? ??????????????? ?? ?? ?????? ? ???? ? ????????? ?????????????? ????? ????? ??? ??? ?? ?????? ?? ????????? ? ??????????? ????? ?? ????? ???? ?????? ? ????????? ?????????????? ????? ????? ??? ? ?? ?? ??????? ?????? ?? ???????????????? ?? ???? ??? ????? ????? ??? ? ?? ?? ????? ???????? ???? ?????????? ???? ?? ?????????? ?? ???????? ?? ?????????? ? ????????? ??? ?? ?????? ?????? ? ????? ????? ??? ??? ?? ?????? ?? ??????? ????? ??????? ? ?? ???????????? ????? ?????? ???? ???????? ???? ? 2024