Research List

No.	Researcher	Title	Abstract	Year
2121	Tin Myo Khaing	TAXONOMIC STUDY ON FIFTEEN SPECIES OF TREES FOUND IN TAMU DISTRICT OF SAGAING REGION	The present research deals with diagnostic characters on fifteen species of trees found in Tamu District of Sagaing Region. This area lies between 23� 20� and 24� 40� North latitude, 94� 00� and 94� 40� East longitude. All the specimens were collected from Tamu District in Sagaing Region from 2017 to 2019. The fifteen species were collected, classified, identified and preserved. In this paper, 15 species belonging to 11 genera of 10 families were presented. The economically valuable timber species are Pterocarpus macrocarpus Kurz, Lagerstroma speciosa (L.) Pers., Shorea obtusa Wall, S. siamensis Miq., Tectona grandis L.f and T. hamitoniana Wall.. The individual species of taxonomic information were presented with relevant photographs. An artificial key to the species was constructed.	2022
2122	Win Win Mar	ANTIMICROBIAL ACTIVITY OF EXTRACTS FROM ENHYDRA FLUCTUANS LOUR. (KA-NA-HPAW)	Three selected medicinal plants grown in Pathein were collected on June, 2019. These plants are Clitoria ternatea L. (Aung-me-nyo) belonging to Fabaceae, Melastoma malabathricum L. (Say-oboke) belonging to Melastomataceae and Enhydra fluctuans Lour. (ka-na-hpaw) belonging to Asteraceae. The fresh samples of these plants except flowers were air-dried and powdered for extraction. The powder of each plant (5 g) was extracted with 50 mL of acetone, ethanol, methanol and water on water-bath at 80?. These extracts were tested the antimicrobial activity on eight different test organisms using the paper disc diffusion assay method. According to their antimicrobial activity, the ethanol extract of Enhydra fluctuans Lour. (20.74 mm of inhibitory zone) was selected for further investigation.	2022
2123	May Barani Shu Shu Tan	SOME OPTIMAL PARAMETERS FOR FUNGAL LIPASE ACTIVITY	Lipolytic fungi were isolated from different sources. Soil sample was collected from the car workshop as fuel oil contaminated soil, Thuwana Township, Yangon Region, Myanmar. Other samples were collected from pork sausage and cheese. Fungal strains were directly isolated from 2 different sources. Diluted soil (concentration - 10-3 , 10-5 , 10-6 , 10-7 , 10-8 , 10-9 ) was used to culture fungi. Fungal strains were cultured on Potato Dextrose Agar (PDA) medium. Lipolytic fungi were screened using Tributyrin Agar (TBA) medium. The isolated fungi were identified by their pure colony morphology and spore formation according to the references. In the present study, three different types of lipolytic fungi were observed from three different sources. Some optimal parameters such as fermentation period, substrate, incubation temperature and initial pH were investigated for lipase activity. Lipase from Aspergillus sp. (1) (isolated from pork sausage source) showed the maximum lipase activity at pH 6.0 and 40�C. Lipase produced from Penicillium sp. (isolated from cheese source) exhibited the greatest lipase activity at 45 �C and pH 8.0, while the highest lipase activity from Aspergillus sp. (18) (isolated from fuel oil contaminated soil) was at 50 �C and pH 8.5.	2022
2124	Naung Naung Oo	SOME ECOLOGICAL ASPECTS OF ROCKY SHORE MARINE GASTROPODS IN BO RON GA ISLAND, NORTHERN RAKHINE COASTAL REGION*	Rakhine Coastal Region is known in terms of biodiversity since it is dubbed by the local and international scientists as ecologically and biologically significant marine area. This research is an attempt to investigate the zonal distribution, influencing factors and faunal responses, habitat preference, abundance and determine the species diversity of molluscan species in rocky shore area of Bo Ron Ga Island, Northern Rakhine Coastal Region. This study was carried out from January to December 2020 in five study sites of Bo Ron Ga Island. There were a total of 1548 individuals of macrobenthic fauna collected encompassing 33 known species of molluscs groups. Most of the number of gastropod shells was found in Bo Ron Ga Island which constitutes about 96% of the entire collection and contributed by Nerita costata (21.22%), Nassarius globosus (17.2%), Morula nodicostata (16.11%), Nerita albicilla (12.51%) and Littoraria undulata (6.88%). In the present study, Hnget Gaung Taung was harboured with the highest species (49 spp.), followed by Pan Nantha Kyun (36 spp.), Lin Noh Kyun (34 spp.), San Taw Shin (33 spp.) and the lowest was observed at Pyin Gyi (25 spp.). In addition, maximum diversity index, equitability and correlation of habitats and species preferences of gastropods were also presented.	2022
2125	Nyunt Sandar Aung	STUDY ON THE DISTRIBUTION AND ABUNDANCE OF MANGROVE CRABS FROM MON COASTAL AREA	The present study was conducted in six mangrove areas of Mon State (Bilukyun (Sabelar), Setse, Tarokpi, Kalegauk, Kaudut and Zeephyuthaung) from June 2012 to April 2017. During the study period, a total of 24 species of brachyuran crabs under 4 families (Portunidae, Grapside, Ocypodidae and Dorippidae) were recorded. Among the recorded species, Scylla serrata, Scylla olivacea, Sesarma anderosorii, S. bidens, S. intermedium, Varuna littera, Gelasimus acutus, G. annulipes, G. dessumieri, G. marionis var nitidus, Uca chloropthalmus, Uca hesperiae, and Uca tetragonon were observed at almost all the study areas. Almost all species were collected from Kalegauk and Kaudut mangrove areas representing 24 species and followed by Zeephyuthaung representing 17 species. Scylla serrata, S. olivacea and Metaplax elegans were the most abundance and also collected in every month in all stations. Dorippe dorsipes and Ocypoda sp. were only observed in Kalegauk and Kaudut mangrove areas. Seasonally, the highest species diversity of crabs was observed in hot months and the highest number of individuals of crab species was observed in the wet season.	2022
2126	Zarni Ko Ko	STOMACH CONTENT ANALYSIS OF SILVER POMFRET FROM MON COASTAL AREA	Stomach content analysis of the silver pomfret, Pampus argenteus was examined from March 2019 to February 2020. A detail investigation of food items of the P. argenteus was undertaken from Mon Coastal Areas. Copepods were the main food item in the diet of P. argenteus followed by the other zooplankton and crustacean appendages. The fish was a carnivore feeding mainly on zooplanktonic organisms while phytoplankton was a minor part of the diet. The semi-digested food was highly macerated and pulpy. Empty stomachs appear in very high percentages within study period. The highest value of gastrosomatic index (GaSI) was observed in February (4.09�1.22) and lowest in November (1.41�0.2) with an annual average of 2.15�0.9. The highest level of vacuity index (VI) was observed in pre-monsson and the lowest in post-monsoon with an annual value was 67%.	2022
2127	Aung Ye Ko	VEIN TYPES, VEIN TEXTURES AND QUARTZ TEXTURES OF THE GOLD-QUARTZ VEINS IN THE TAUNG NI GOLD PROSPECT AREA, MADAYA TOWNSHIP, MANDALAY REGION, MYANMAR*	Taung Ni area is situated in Madaya Township, Mandalay Region, Myanmar. The mineralization style of the study area is the vein type deposit hosted by quartzite jointed and brecciated interbedded with phyllite. Two main types of quartz veins were observed within the Taung Ni goldbearing quartz veins system: primary gold-bearing sulphide quartz veins and secondary auriferous deformed / remobilized quartz veins. The quartz veins have generally segmented structure with typically brecciated and laminated/banded textures. Mineralogically quartz dominates in all the mineralized veins and a variety of textures, such as massive quartz, comb quartz, mosaic textures quartz, sheared quartz, and mechanical breakdown of quartz are present. Three generations of quartz based on morphology have been identified: the coarse-grained quartz (first quartz generation), finegrained to ribbon quartz due to recrystallization (second quartz generation), and sheared and comb structure quartz (third quartz generation). The distinct alteration processes are silicification, chloritization, sericitization, pyritization and hematization. Gold- bearing sulphide quartz veins show a stockwork structure with chalcopyrite filled fractures. Gold occurs as inclusions in chalcopyrite and hematite. Auriferous deformed/remobilized quartz veins show the crushed and fractured characteristics with hematite filled fractures. The hematite quartz bands offer the best potential for significant gold concentration. Fluid inclusion data indicated that the gold-bearing mineralized quartz veins were developed within mesothermal environment. On the basic of those discovered genetic characteristics, quartz veins and textures of quartz, the Taung Ni gold prospect is a orogenic (mesothermal) gold type.	2022
2128	Htay Maung	GRANULOMETRIC ANALYSIS OF DEPOSITIONAL ENVIRONMENT FROM YAW FORMATION EXPOSED IN PIN DAUNG TAUNG � THA LAUK AREA, CHINDWIN BASIN	The research area lies within the Chindwin Basin, which is filled by the Cretaceous to Miocene clastic sedimentary rocks which are deposited between the marine to fluvial conditions. The Yaw Formation mainly consists of thin to medium-bedded, grey to bluish-grey carbonaceous silty shale and nodular clay with some intercalated buff-yellowish sandstones. Coal seams are also interlayers with silty clay and sandstones. The Yaw Formation fall litharenites and the textural parameter shows unimodal, moderately to poorly sorted, nearly symmetrical to very positive skewness, mesokurtic to leptokurtic values that indicate fine to medium grains which are low to medium energy of current velocity condition. Bivariate plot of the standard deviation & median diameter distinguished between the river/wave and quiet water condition. Moreover, The PQ/OP segments of the CM pattern describe graded suspension with some rolled sediments as well as the segments QR point to saltation population and the grains size analysis as three populations. The log-probability curve of Yaw Formation sediments also supports the segments of the CM pattern. This indicates that the sediments of the Yaw Formation were transported and deposited in the different modes of saltation/suspension. According to petrography and grain size distribution, the sandstones of the Yaw Formation may be deposited at the low to medium energy state of the deltaic condition in shallow marine environments.	2022
2129	San San Aye	COMPARATIVE STUDIES OF ANTIBACTERIAL ACTIVITY AND PHYTOCHEMICAL CONSTITUENTS OF SOME MYANMAR INDIGENOUS MEDICINAL PLANTS	Developing countries, where dysentery and diarrhea are endemic, depend strongly on traditional medicine as a source for inexpensive treatments because it is based on plants which are abundantly available in these countries. Consequently, Myanmar indigenous medicinal plants (Curcuma longa L., Nigella satia L. and Piper betel L.) which are used for the treatment of dysentery and diarrhea in Myanmar were selected to study in order to find the scientific basis for such use. The selected plants were screened for antibacterial activity by using agar disc diffusion technique. Polar and non-polar extracts of the selected plants were tested on 33 species of standard and hospital bacterial strains. The Minimum Inhibitory Concentration (MIC) of the active extracts was also determined by agar plate dilution method. Three curcuminoids, namely curcumin (5.9 %), desmethoxy curcumin (0.018 %) and bisdesmethoxy curcumin (0.0136 %) were isolated from C. longa rhizomes. N. satia seeds were fractionated by column chromatography to give thymoquinone (0.01 %), kaempferol (0.12 %) and quercetin (0.001 %). Eugenol (0.1 %) was isolated from essential oil of P. betel. The isolated compounds were identified by UV, FT IR, 1H NMR, 13C NMR and mass spectroscopic methods. The isolated compounds were also found to show bactericidal activity. Thus the extracts of the three plants have high potential for the production of combined formulation to treat infections caused by bacteria	2018
2130	Su Mon Aung	AN INVESTIGATION INTO THE IMPACT OF INSTRUCTIONAL DESIGN FOR CONTEXTUALIZED INSTRUCTION ON STUDENTS� CONCEPTUAL UNDERSTANDING IN LEARNING PHYSICS*	The main purpose of this study is to investigate the impact of instructional design for contextualized instruction on students� conceptual understanding in learning physics. The research design adopted was one of the mixed methods designs, namely, the explanatory sequential mixed methods design (QUAN?qual design). For the quantitative study, nonequivalent control group design was used. To follow up on quantitative results, descriptive case study design was used. The research instruments were pretest, posttest, materials including unit plans, lesson plans and contextualized workbook, questionnaires, classroom observational guide and interview. By using the simple random sampling method, four basic education high schools from Yangon Region were selected for the quantitative study. Purposive sampling was used to select the students and the teachers in the experimental groups for the qualitative study. In quantitative research findings, the findings of physics achievement on conceptual understanding showed that experimental groups who received the instructional design for contextualized instruction were significantly higher than the control groups who did not. There was a strong relationship between students� physics achievement and their attitudes towards the instructional design. The stronger the students� attitudes towards the instructional design were established, the higher the physics achievement. The predicting factors for physics achievement were experience, preference and academic value. Concerning qualitative research findings, the results of questionnaires, observation and interview revealed that teachers and students preferred, well performed and are willing to apply this instructional design. The qualitative research findings also supported the quantitative research findings.Therefore, the research findings proved that the instructional design for contextualized instruction had a positive impact on high school physics teaching and learning.	2022

Research Publications

Myanmar Academy of Art & Science List of Research