76 research outputs found
Pollen Morphology of Six Herbaceous Species (Rubiaceae)
No full textPollen morphology of one species of Mitracarpus, Richardia and four species of Spermacoce were studied in the present paper. The specimens were collected from Pyin Oo Lwin Township and pollen recorded by using light microscope and photomicrographs. All of the grains were observed one type of aperture (colpate), exine sculpture (distinctly reticulate) and the shape in oblate type. The number of aperture (colpi) are varied in the studied species. The size of the pollen were small, medium or large. The classification of pollen morphology has been described on the basis of shape, size, apertures, sculpture patterns and pollen wall stratification
Evaluation on Nutritional and Elemental Composition of Moringa oleifera Lam
No full text"Moringa oleifera Lam. is a multipurpose herbal plant used as a food and an alternative for
medicinal purpose worldwide. Besides, Moringa oleifera Lam. plant has been identified as a
plant with numerous health benefits including nutritional and medicinal advantages. So, in
the present research, phytochemical and nutritional values of Moringa oleifera Lam. (leaves,
flowers and pods) were evaluated by using standard phytochemical screening procedure
(J.B Harbone) and standard official method (AOAC, Association of Analytical Chemist)
respectively. The relative abundance of elemental composition were analysed by EDXRF
(Energy Dispersive X-ray Fluorescence Spectroscopy).
Chemical Analysis of Two Commercial Dried Fish Samples
No full text"Dried fish are very popular in Myanmar and some of these have been marketed abroad.
Dried fish is an important source of low-cost dietary protein. Chemical investigations of
two dried fish samples of Coilia ramcarati (Myee-tan-thwe) and Channa striatus (Nga-yant)
which are widely consumed in Myanmar were carried out. The samples were purchased
from Shwe Yin Mon market, Chan Aye Thar San Township in Mandalay Region. Some
physiochemical properties such as pH, moisture, ash, protein, fat, fibre and carbohydrate
contents of the two samples were determined by Association Official Analytical Chemist
(AOAC) method. Moreover, the elemental composition of the two samples were carried out
by using Energy Dispersive X-ray Fluorescence (EDXRF) method.
Development Of Testable Paths For Java Programs
No full textSoftware testing is a critical element of software quality assurance. One of the important tasks during software testing is the generation of testable paths. Software testing is extremely labor and resource intensive, accounting for 50-60% of the total cost of software development. Testing is integrated with and affects all stages of the Software Engineering lifecycle. This system has code parsing module from input java source code, analyzer module which maps with predefined keywords, control flow graph generator and developing testable paths module. This system calculate cyclomatic complexity to validate the output testable paths. This system evaluates the testable paths of the input Java source code and generates the control flow graph (CFG) to assist the software developer in testing phase
Text Based Web Image Retrieval System by Using Latent Semantic Indexing (LSI)
No full textThis paper describes the use of latent semantic indexing (LSI) in text-based image retrieval system. Due to the rapid development and popularity of World Wide Web (WWW), users have to face a variety and large number of web pages and images that waste time to search and browse. To alleviate this difficult, more efficient image retrieval system is needed to extract the required image from the collection of web pages. Therefore many image retrieval systems have been developed and used on the web. Among them, text-based image retrieval is a kind of image Meta search that based on associated metadata. Our proposed text-based image retrieval can retrieve both images alone and combined of images and associated alphanumeric text
"Isolation and Functional Groups Identification of Pure Organic Compound fromthe Whole Plant of Tradescantiazebrina Bosse (YaeWarr)"
No full text"In this research, a pure organic compound was isolated from the whole part of YaeWarr.
The sample was collected from Chan Aye Thar San Township in Mandalay Region. Before
analyzing, phytochemical screening of the plant was carried out. Moreover, mineral
contents of YaeWarr were determined byusing Energy Dispersive X-Ray Fluoresence
Spectroscopy(EDXRF). Antimicrobial activities of this plant in various solvents were
examined by means of Agar well diffusion method. In addition, the active compound (KW)
was isolated from YaeWarr applying column chromatography. Then, thin layer
chromatographic separation method was used for its purity. The pure compound could
be identified by Fourier-Transform Infrared (FT-IR) spectrum.
Enhanced Photovoltaic Performance of Dye-Sensitized Solar Cells via Electrochemically Deposited TiO2 Compact Underlayer
No full textThe TiO2 compact layers produced by the electrochemical deposition method were employed as blocking underlayer in dye-sensitized solar cells (DSSCs). The galvanostatic deposition method was utilized to deposit TiO2 compact layer (TiO2-CL) onto FTO substrates from acidic titanium (III) chloride electrolytic solution. The formation-TiO2 compact layers were affirmed by X-ray diffraction (XRD). The transparency of TiO2 compact layer was examined by UV-vis absorption spectroscopy. The present work mainly investigated the effect of TiO2-CL incorporation on the photovoltaic performance of the DSSCs where the photosensitizer is LEG4 organic dye and the redox mediator is CoII/CoIII based electrolyte. Incorporation of TiO2-CL between transparent FTO electrode and meso-TiO2 could increase efficiency of a device with an obvious increase in short circuit current density. The power conversion efficiency is 4.3% and 3.5% of the devices with and without TiO2-CL
Increasing Efficiency of Dye-sensitized Solar Cells through Co-sensitization of Organic Dyes LEG4 and DN-F10 as Light Absorber
No full textOrganic dyes LEG4/DN-F10 as efficient co-sensitized dye system were introduced in dye- sensitized solar cell. With attribution of broaden spectral absorption, the LEG4/DN-F10 co-sensitized dye system could improve the photovoltaic performance of devices in combination with Co(II/III) electrolyte. The photo-transition energy gap of LEG4/DN-F10 system is 1.81 eV. In the present work, power conversion efficiency (PCE) of 4.47% were achieved for device based on LEG4/DN-F10 with short circuit current density, Jsc of 6.87 mA/cm2, Voc of 0.76 V and FF of 56.78 while PCE of device with single dye are 3.41% for LEG4 dye and 3.76% for DN-F10 dye. The co-sensitization is a simple and effective strategy to improve the photovoltaic performance of the device. Further optimization steps are needed to enhance power conversion efficiency and it is under way
Energy Management of Stand-Alone Hydrokinetic Power Supply System with Battery Energy Storage for Rural Electrification
No full textIn this paper, optimal energy management for a stand-alone hydrokinetic power supply system with a battery storage system isproposed to sufficiently explore hydrokinetic energy for customers at the demand side. The management of power flow aims tooptimal energy supply subject to a number of constraints, such as power balance, hydrokinetic power output, and battery capacity. The hydrokinetic turbine is connected with permanent magnet synchronous generator (PMSG), power electronic devicesand battery bank. The battery bank is used to store the surplus of energy when the load demand is low and discharges again thestored energy to the load when hydrokinetic power is not sufficient to supply the load. The proposed system can meet the load for every hour of the days without interruption. The average daily load requirement and available hydrokinetic power are calculated for three seasons. In this research, the average daily load requirement of the summer season is chosen because it is the highest in energy consumption from three seasons. The simulation results show that the management of the system is satisfied between available hydrokinetic power and load deman
Petrology of Devonian Strata in Naungcho Area, Naungcho Township
No full textThe present work deals with the systematic classification of the Paleozoic sequence in Naungcho area, situated about 30 miles north-east of Pyinoo- Lwin, in Naungcho Township. The Devonian strata of the study area can be differentiated into two lithostratigraphic units of formation rank, viz., Maymyo Dolomite Formation (Middle-Late Devonian) and Zebingyi Formation (Early Devonian). In the view of petrology, the sedimentary sequences of the present area can be classified into two microfacies; (i) biomicrite/ bioclastic-wackestone and (ii) laminated micrite/ mudstone in the Zebingyi Formation. Furthermore, there can also be classified into two microfacies, such as (i) micritic dolomite/
muddy dolomite and dolomitized sandy pelmicrite/ dolomitized sandy peloidal wackestone-packstone in the Maymyo Dolomite Formation. According to lithology, faunal content, and sedimentary structure, the depositional environments of all these units, can be concluded as follow; the restricted shallow lagoon environment for the Zebingyi Formation, and warm, slightly agitated shallow marine environment for the Maymyo Dolomite Formation
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