DSpace Collection: ABSTRACTS OF THE 7TH ANNUAL SCIENCE RESEARCH SESSIONS (ASRS) – 2018 on “Interdisciplinary Scientific Research for Inclusive Development” November 15th, 2018 Faculty of Applied Sciences South Eastern University of Sri Lanka Sammanthurai
http://ir.lib.seu.ac.lk/handle/123456789/3389
ABSTRACTS OF THE 7TH ANNUAL SCIENCE RESEARCH SESSIONS (ASRS) – 2018 on “Interdisciplinary Scientific Research for Inclusive Development” November 15th, 2018 Faculty of Applied Sciences South Eastern University of Sri Lanka Sammanthurai2024-03-20T21:17:40ZOptimal algorithm for melanoma skin cancer detection
http://ir.lib.seu.ac.lk/handle/123456789/3512
Title: Optimal algorithm for melanoma skin cancer detection
Authors: Srirangan, S; Kariapper, R. K. Ahmadh Rifai
Abstract: The skin cancer is one of the most Hazardous form of the Cancers found in the Humans today; especially, in the recent years, number of melanoma skin cancer patients have been recorded rapidly all over the world. The detection of Melanoma cancer in early stage can be helpful to cure it. However, the segmentation of the melanoma skin cancer lesion in traditional approach is a challenging task due to the number of false positives is large and time consuming in prediction. Hence, the development of automated computer vision system becoming as an essential. The aim in this study is to identify the specific cancer
region with accuracy than traditional approaches. So, the objectives of this study are to
examine existing systems and identify the major issues of the systems and finding future
directions based on image processing techniques. The input to the system is the skin lesion image and then by applying novel image processing techniques. The finding of the study shows that, the new proposed approach could achieve 97.54% sensitivity, 97.69%
specificity, and 97.56% accuracy respectively. This tool is more useful for the rural areas
where the experts in the medical field may not be available. Since the tool is made more
users friendly and robust for images acquired in any conditions, it can serve the purpose of automatic diagnostics of the melanoma Skin cancer.2018-11-15T00:00:00ZInfluences of consumer price index and gross domestic saving on Sri Lankan economy: a johansen co-integration tactic
http://ir.lib.seu.ac.lk/handle/123456789/3511
Title: Influences of consumer price index and gross domestic saving on Sri Lankan economy: a johansen co-integration tactic
Authors: Haalisha, Aboobucker; Jahufer, Aboobucker
Abstract: An essential aim for any emerging country like Sri Lanka is to achieve great economic development. Even though there are several factors that have an effect on economic growth (GDP), this paper primarily focuses on Consumer Price Index (CPI) and Gross Domestic Saving (GDS) in Sri Lanka, founded on the yearly time series data for the period of 1960 - 2016 gotten from the Annual Report of World Bank Economic Indicators and Annual Report of Central Bank of Sri Lanka. As these are the time series variables with
its precision, the stationarity among the three variables (GDP, CPI, and GDS) was examined by utilizing the Augmented Dickey Fuller unit root test at 5% significance level. The presence of cointegration of the variables was confirmed by the Johansen Co-integration test and then the short-run or long-run association between the variables was evaluated by Vector Error Correction (VEC) test. The causal relationships among the variables were tested with Granger Causality test. The observed results of this study expose that all the variables have unit root problem at level, but convert stationary after first differencing. The results of Johansen Co-integration experiments designate single co-integration equation whereas the VEC test praises no short-run relationship among the variables while the presence of a longrun relationship. Consistently Granger causality test shows a unidirectional causality drive from GDP to GDS. Model adequacy tests were enforced on the residuals of the VECM comments that there is no heteroscedasticity, no serial correlation, and are normally distributed suggesting that the model is good enough. This study gratifies a prominent requirement of how CPI and GDS sustenance for economic growth.2018-11-15T00:00:00ZExtraction and utilization of plant pigments for the use of sensitization in solar cells
http://ir.lib.seu.ac.lk/handle/123456789/3510
Title: Extraction and utilization of plant pigments for the use of sensitization in solar cells
Authors: Farhana, M. A.; Sivakumar, V.; Zainudeen, U. L.
Abstract: Colorants are used for various purposes such as food colouring, cosmetic things, and
material fabrication. Dyes are also used as sensitizer in Dye Sensitized Solar Cells (DSSC) for more than two decades. Although commercial dyes are efficient than natural dyes, the natural dyes are preferred because of low cost, easiest extraction, widely available, and environmentally friendly. Various components of a plant such as the flowers petals, leaves and bark have been tested as sensitizers. In this review, 14 different plant pigments were extracted to give an optimal natural dye as sensitizer in DSSCs. For that, the UV-Visible spectroscopy was used to analyses to each pristine plant extract. Then, from the absorbance spectra, the plant materials were selected which showed high absorbance peaks in UV and Visible regions. In this study, purple bush bean flowers and spinach fruits extracts were selected for further analysis due to their strong absorption. Cells with TiO2 layer were immersed into the extracts selected for 24 hrs. The absorption of [TiO2 / dye] was measured in visible region, and I-V characteristic curves were obtained. The results show that; the purple bush bean flowers extract has the promising ability to use as sensitizer in DSSCs among the other plant materials which were tested.2018-11-15T00:00:00ZPossible extraction efficiency of iron from laterite soil at lower ph: preliminary findings
http://ir.lib.seu.ac.lk/handle/123456789/3509
Title: Possible extraction efficiency of iron from laterite soil at lower ph: preliminary findings
Authors: Madhubhashani, H. G. M. P.; Adikaram, A. M. N. M.; Jayawardana, D. T.; Udagedra, D. T.
Abstract: Laterite soil is one of the main sources of iron, which can be extracted from dissolution techniques. Sri Lanka has wide distribution of lateritic soils which are not in use except as a raw material. This study aimed to identify the possible extraction efficiency of iron from laterite soils under lower pH range and different size fractions. Lateritic soil samples were collected from Kirindiwita area of Gampaha, Sri Lanka. Two dry sample batches were prepared in different gran size fractions as sand fraction (2 mm-63 µm) and silt with clay fraction (<63 µm). These batches were then subjected to leaching for 5 hours in a range of pH varying from 1 to 7. The pH of solutions was controlled by adding 0.1 M HCl and 0.1 M NaHCO3. The extractions were analyzed for Fe3+ concentration using Atomic Absorption Spectroscopy (AAS). Contrast to the literature, the results of the present study
revealed that the optimum pH of the maximum iron extraction in HCl addition is one (1) for
both particle size batches of laterites. The results might be affected by the acid medium and the soil characteristics. However, higher iron extraction efficiency is recorded for sand
fraction rather than silt with clay fraction indicating less clay contents. Further studies are
recommended to identify the effect of soil characteristics on the above results.2018-11-15T00:00:00Z