Thaksin University , is a public university in Southern Thailand. It is located in Amphoe Muang Songkhla, Songkhla Province. It is about twenty kilometers from Hat Yai District. Previously, Thaksin University was a branch campus of Srinakharinwirot University. Afterwards it grew in size and eventually became a separate university.Thaksin University was established as an independent public university on September 1, 1996.The university name was granted by a Royal Decree of His Majesty the King, who graciously granted the university the name of Thaksin, which means “southern”. The aim of the university is encourage and preserve the culture of Southern Thailand.The university has two campuses and one center in Bangkok. The campuses are in Tambon Khao-Roop-Chang, Amphoe Muang Songkhla, Songkhla and Tambon Ban Plao, Pa Payom District, Phattalung. The Phattalung Campus was founded in 1989.The university offers undergraduate education degrees, postgraduate education degrees, and doctoral education degrees in science, Medical science, Social science and Humanities. It has a special International Graduate Program that offers research-based Ph.D. programs through the region under the supervision of senior academics from international universities.Thaksin University is the juristic body under the responsibility of the Office of the Higher Education Commission. Associate professor Doctor Somkiat Saithanoo holds the position of university president. Wikipedia.
Hniman A.,Prince of Songkla University |
O-Thong S.,Thaksin University |
Prasertsan P.,Prince of Songkla University
International Journal of Hydrogen Energy | Year: 2011
Xylose and glucose are the major sugar components of lignocellulosic hydrolysate. This study aims to develop thermophilic hydrogen-producing consortia from eight sediments-rich samples of geothermal springs in Southern Thailand by repeated batch cultivation at 60 °C with glucose, xylose and xylose-glucose mixed substrates. Significant hydrogen production potentials were obtained from thermophilic enriched cultures encoded as PGR and YLT with the maximum hydrogen yields of 241.4 and 231.6 mL H 2/g sugar consumed, respectively. After repeated batch cultivation the hydrogen yield from xylose-glucose mixed substrate of PGR increased to 375 mL H 2/g sugar consumed which was 30% higher than that of YLT (287 mL H 2/g sugar consumed). Soluble metabolites from xylose-glucose mixed substrates were composed mostly of butyric acid (20.6-21.8 mM), acetic acid (7.2-13.5 mM), lactic acid (8.2-11.7 mM) and butanol (4.4-13.0 mM). Denaturing gradient gel electrophoresis (DGGE) profiles illustrated small difference in microbial patterns of PGR enriched with glucose, xylose-glucose mixed substrate and xylose. The dominant populations were affiliated with low G + C content Gram-positive bacteria, Thermoanaerobacterium sp., Thermoanaerobacter sp., Caloramater sp. and Anoxybacillus sp. based on the 16S rRNA gene. Cultivation of the enriched culture PGR in oil palm trunk hydrolysate, the maximum hydrogen yield of 301 mL H 2/g sugar consumed was achieved at hydrolysate concentration of 40% (v/v). At higher concentration to 80% (v/v), the hydrogen fermentation process was inhibited. Therefore, the efficient thermophilic hydrogen-producing consortia PGR has successfully developed and has great potential for production of biohydrogen from mixed sugars hydrolysate. © 2010, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
Yossan S.,Prince of Songkla University |
O-Thong S.,Thaksin University |
Prasertsan P.,Prince of Songkla University
International Journal of Hydrogen Energy | Year: 2012
Thermotolerant consortia were obtained by heat-shock treatment on seed sludge from palm oil mill. Effect of the initial pH (4.5-6.5) on fermentative hydrogen production palm oil mill effluent (POME) showed the optimum pH at 6.0, with the maximum hydrogen production potential of 702.52 mL/L-POME, production rate of 74.54 mL/L/h. Nutrients optimization was investigated by response surface methodology with central composite design (CCD). The optimum nutrients contained 0.25 g urea/L, 0.02 g Na 2HPO 4/L and 0.36 g FeSO 4·7H 2O/L, giving the predicted value of hydrogen production of 1075 mL/L-POME. Validation experiment revealed the actual hydrogen production of 968 mL/L-POME. Studies on the effect of temperature (25-55 °C) revealed that the maximum hydrogen production potential (985.3 mL/L-POME), hydrogen production rate (75.99 mL/L/h) and hydrogen yield (27.09 mL/g COD) were achieved at 55, 45 and 37 °C, respectively. Corresponding microbial community determined by the DGGE profile demonstrated that Clostridium spp. was the dominant species. Clostridium paraputrificum was the only dominant bacterium presented in all temperatures tested, indicating that the strain was thermotolerant. Highlights: Initial pH, nutrients and temperature affected on H 2 production from POME. The optimum initial pH was 6.0. Optimum nutrients were 0.25 g urea/L, 0.02 g Na 2HPO 4/L and 0.36 g FeSO 4·7H 2O/L. Maximum H 2 production, rate and yield were at 55, 45 and 37 °C, respectively. Clostridium paraputrificum were thermotolerant strain with growth temperature of 25-55 °C. © 2012 Hydrogen Energy Publications, LLC.
Sangkharak K.,Thaksin University |
Prasertsan P.,Prince of Songkla University
Journal of General and Applied Microbiology | Year: 2012
Polyhydroxyalkanoates (PHAs) accumulating bacteria were isolated under various selective conditions such as pH, salt concentrations and types of heavy metal. Fifty strains of bacterial isolates were found to belong to Bacillus, Proteus, Pseudomonas, Aeromonas, Alcaligenes and Chromobacterium, based on phenotypical features and genotypic investigation. Only twenty five bacterial isolates were selected and observed for the production of PHAs. Interestingly, bacteria belonging to Firmucutes Bacillus sp. produced a high amount of PHAs. The maximum PHAs were accumulated by B. licheniformis PHA 007 at 68.80% of dry cell weight (DCW). Pseudomonas sp., Aeromonas sp., Alcaligenes sp. and Chromobacterium sp. were recorded to produce a moderate amount of PHAs, varying from 10.00-44.32% of DCW. The enzymatic activity was preliminarily analyzed by the ratio of the clear zone diameter to colony diameter. Bacillus gave the highest ratio of hydrolysis zone which corresponds to the highest hydrolytic enzyme activities. Bacillus licheniformis PHA 007 had the highest lipase and protease activity at 2.1 and 5.1, respectively. However, the highest amylase activity was observed in Bacillus sp. PHA 023 at 1.4. Determination of metabolic characteristics was also investigated to check for their ability to consume a wide range of substrates. Bacillus, Aeromonas sp. and Alcaligenes sp. had great ability to utilize a variety of substrates. To decrease high PHA cost, different sources of cheap substrates were tested for the production of PHAs. Bacillus cereus PHA 008 gave the maximal yield of PHA production (64.09% of DCW) when cultivated in anaerobically treated POME. In addition, the accumulation of PHA copolymers such as 3-hydroxyvalerate and 3-hydroxyhexanoate was also observed in Bacillus and Pseudomomas sp. strain 012 and 045, respectively. Eight of the nine isolates accumulated a significant amount of PHAs when inexpensive carbon sources were used as substrates. Here it varied from 1.69% of DCW by B. licheniformis PHA 007 to 64.09% of DCW by B. cereus PHA 008.
O-Thong S.,Technical University of Denmark |
O-Thong S.,Thaksin University |
Boe K.,Technical University of Denmark |
Angelidaki I.,Technical University of Denmark
Applied Energy | Year: 2012
The effect of pretreatment methods for improved biodegradability and biogas production of oil palm empty fruit bunches (EFB) and its co-digestion with palm oil mill effluent (POME) was investigated. The maximum methane potential of POME was 502mL CH4/gVS-added corresponding to 33.2m3 CH4/ton POME and 98% biodegradability. Meanwhile, the maximum methane potential of EFB was 202mL CH4/gVS-added corresponding to 79.1m3 CH4/ton EFB with 38% biodegradability. Co-digestion of EFB with POME enhanced microbial biodegradability and resulted in 25-32% higher methane production at mixing ratios of 0.4:1, 0.8:1 and 2.3:1 on VS basis than digesting EFB alone. The methane yield was 276-340mL CH4/gVS-added for co-digestion of EFB with POME at mixing ratios of 0.4:1-2.3:1, while minor improvement was observed at mixing ratios of 6.8:1 and 11:1 (175-197mL CH4/gVS-added). The best improved was achieved from co-digestion of treated EFB by NaOH presoaking and hydrothermal treatment with POME, which resulted in 98% improvement in methane yield comparing with co-digesting untreated EFB. The maximum methane production of co-digestion treated EFB with POME was 82.7m3 CH4/ton of mixed treated EFB and POME (6.8:1), corresponding to methane yield of 392mL CH4/gVS-added. The electricity production of 1ton mixture of treated EFB and POME would be 1190MJ or 330kWh of electricity. The study shows that there is a great potential to co-digestion treated EFB with POME for bioenergy production. © 2012 Elsevier Ltd.
Liamputtong P.,La Trobe University |
Suwankhong D.,Thaksin University
Sociology of Health and Illness | Year: 2015
In this article we draw on Bury's theory of biographical disruption to discuss the meanings of, and emotional experiences related to, being diagnosed with breast cancer among southern Thai women. Qualitative methods, including in-depth interviewing and drawing methods, were used to collect data from 20 women with breast cancer. The women perceived breast cancer to be a rhok raai; an evil or dread disease. They believed that breast cancer would lead to death. The disruption in their biography occurred when they detected abnormalities indicating breast cancer. The women's narratives revealed their chaotic lives upon this diagnosis and the news precipitated in them shock, fear, anxiety and loss of hope. Although they experienced chaos and disruption, the women cultivated strategies that helped them cope with their experiences by accepting their fate and adhering to Buddhist beliefs and practices. Through their narratives of biographical disruption, the women in our study offer healthcare providers knowledge that could lead to an appreciation of their needs and concerns. This knowledge is crucial for health professionals who wish to provide emotional support to women who have been diagnosed with breast cancer in Thailand and elsewhere. © 2015 John Wiley & Sons Ltd.
Waewsak J.,Thaksin University |
Landry M.,University of Moncton |
Gagnon Y.,University of Moncton
Renewable Energy | Year: 2013
In this work, a high resolution wind atlas for Nakhon Si Thammarat and Songkhla provinces in southern Thailand was developed using combined mesoscale, MC2, and microscale, MsMicro, modeling techniques. The model inputs consist of long-term statistical climate data, i.e. the NCEP/NCAR database, high resolution topography and land cover data. The 200 m resolution wind resource maps were validated with observed mean wind speeds from 10 met stations located along the coastlines of the territory studied. These comparisons have shown that the wind atlas provides a good representation of the wind resource throughout the territory of Nakhon Si Thammarat and Songkhla provinces, Thailand. The technical power potential and potential annual energy production are then identified. Results from the technical power potential at 80 m above ground level show that a total of 1374 MW of wind farms, generating annually 3.6 TWh of electricity, could be installed; while 407 MW of small wind turbines (50 kW), generating annually 1.0 TWh of electricity, could be installed. © 2012 Elsevier Ltd.
Sukkasem C.,Thaksin University |
Laehlah S.,Thaksin University
Bioresource Technology | Year: 2013
Agro-industry wastewaters normally contain high levels of organic matter and require suitable treatment before discharge. The use of Microbial fuel cells, a novel wastewater treatment, can provide advantages over existing treatment methods. In this study, an up-flow bio-filter circuit (UBFC) for treating wastewaters without chemical treatment or nutrient supplement, was developed to solve a clogging problem. The optimal conditions included an organic loading rate of 30.0. gCOD/L-d, hydraulic retention time of 1.04. day, pH level of 5.6-6.5 and aeration at 2.0. L/min. External resistance of the circuit was tested. COD removal levels of 8.08, 20.1 and 26.67. gCOD/L-d were obtained, while fed with sea food, biodiesel and palm oil mill wastewater, respectively. These rates are higher than for conventional technologies. The carbon fiber brush immobilized base increased the performance of the new UBFC by 17.54% over that obtained in a previous study, while the cost was slightly decreased about 4.48%. © 2013 Elsevier Ltd.
Pukkhem N.,Thaksin University
International Conference on Advanced Communication Technology, ICACT | Year: 2014
This paper seeks to identify the factors of university students in major of Computer Science at Thaksin University, Thailand that predicts successful completion of the bachelor's degree. Decision tree C4.5/J48, ID3 and ADTree algorithm, the classification algorithms in data mining which are commonly used in many areas can also be implemented to generate the classification rules. In our experiment with 128 training records, we found an overall accuracy of C4.5/J48 algorithm was 90.625%, ID3 algorithm and ADTree were 96.875%. Moreover, we extend the classification rule by applying a semantic-based approach for creating a classification tree ontology. The ontology represent about the classification rules that used to enable machines to interpret and identify learner factors in process of prediction. We also explain how ontological representation plays a role in classifying students to predictive target class. The inference layer of classification tree ontology is based on SWRL (Semantic Web Rule Language), making a clarify separation of the program component and connected explicit modules. One of the major advantages of the proposed approach is that identifying success factors will give students an awareness of essential features for successful completion of their graduate studies. © 2014 Global IT Research Institute (GIRI).
Sukkasem C.,Thaksin University
Bioresource technology | Year: 2013
Agro-industry wastewaters normally contain high levels of organic matter and require suitable treatment before discharge. The use of Microbial fuel cells, a novel wastewater treatment, can provide advantages over existing treatment methods. In this study, an up-flow bio-filter circuit (UBFC) for treating wastewaters without chemical treatment or nutrient supplement, was developed to solve a clogging problem. The optimal conditions included an organic loading rate of 30.0 g COD/L-d, hydraulic retention time of 1.04 day, pH level of 5.6-6.5 and aeration at 2.0 L/min. External resistance of the circuit was tested. COD removal levels of 8.08, 20.1 and 26.67 g COD/L-d were obtained, while fed with sea food, biodiesel and palm oil mill wastewater, respectively. These rates are higher than for conventional technologies. The carbon fiber brush immobilized base increased the performance of the new UBFC by 17.54% over that obtained in a previous study, while the cost was slightly decreased about 4.48%. Copyright © 2013 Elsevier Ltd. All rights reserved.
Sangkharak K.,Thaksin University
Waste Management and Research | Year: 2011
The present study investigated the development of high sugar production by optimization of an enzymatic hydrolysis process using both conventional and statistical methods, as well as the production of ethanol by the selected wastepaper source. Among four sources of pretreated wastepaper including office paper, newspaper, handbills and cardboard, office paper gave the highest values of cellulose (87.12%) and holocelluloses (89.07%). The effects of the amount of wastepaper, the pretreatment method and the type of enzyme on reducing sugar production from office paper were studied using conventional methods. The highest reducing sugar production (1851.28 μg L -1; 37.03% conversion of glucose) was obtained from the optimal condition containing 40 mg of office paper, pretreated with stream explosion and hydrolysed with the combination of cellulase from Aspergillus niger and Trichoderma viride at the fixed loading rate of 20 FPU g -1 sample. The effects of interaction of wastepaper amount and enzyme concentration as well as incubation time were studied by a statistical method using central composite design. The optimal medium composition consisted of 43.97 μg L -1, 28.14 FPU g -1 sample and 53.73 h of wastepaper, enzyme concentration and incubation time, respectively, and gave the highest amount of sugar production (2184.22 μg L -1) and percentage conversion of glucose (43.68%). The ethanol production from pretreated office paper using Saccharomyces cerevisiae in a simultaneous saccharification and fermentation process was 21.02 g L -1 after 36 h of cultivation, corresponding to an ethanol volumetric production rate of 0.58 g ethanol L -1 h -1. © 2011 International Solid Waste Association.