Nakhon Si Thammarat, Thailand

Walailak University

www.wu.ac.th
Nakhon Si Thammarat, Thailand

Founded in 1992, Walailak University is a public university located in Tha Sala District, Nakhon Si Thammarat Province, Thailand. Although state funded, Walailak University is given a high level of autonomy, unusual among Thai public universities.The university was named after Her Royal Highness Princess Chulabhorn Walailak. Wikipedia.

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Channuie P.,Walailak University | Xiong C.,Nanyang Technological University
Physical Review D | Year: 2017

In this work, we propose a cosmological scenario inherently based on the effective Nambu-Jona-Lasinio (NJL) model that cosmic inflation and dark matter can be successfully described by a single framework. On the one hand, the scalar channel of the NJL model plays a role of the composite inflaton (CI) and we show that it is viable to achieve successful inflation via a nonminimal coupling to gravity. For model of inflation, we compute the inflationary parameters and confront them with recent Planck 2015 data. We discover that the predictions of the model are in excellent agreement with the Planck analysis. We also present in our model a simple connection of physics from the high scales to low scales via renormalization group equations (RGEs) of the physical parameters and use them to estimate the range of relevant parameters. On the other hand, the pseudoscalar channel can be assigned as a candidate for composite dark matter (CD). For a model of dark matter, we couple the pseudoscalar to the Higgs sector of the standard model with the coupling strength κ and estimate its thermally averaged relic abundance. We discover that the CD mass is strongly sensitive to the coupling κ. We find in case of light CD, MsMW,Z (or >Mh), the required relic abundance can be satisfied for value of the CD mass Ms∼410 GeV for κ=0.5. In contradiction to the light mass case, however, the CD mass in this case can even be heavier when the coupling is getting larger. © 2017 American Physical Society.


Jantarat C.,Walailak University
International Journal of Pharmacy and Pharmaceutical Sciences | Year: 2013

Curcumin was characterized as an excellent molecule among many naturally occurring compounds for treatment and prevention of a wide variety of human diseases especially for cancer therapeutics. It was proved to be safe even used at very high dose. However, due to its very low bioavailability, curcumin has not yet been approved as a therapeutic agent. Many attempts have been made to increase curcumin bioavailability via the increase of its solubility, stability, and permeability by using several techniques. This review presents the bioavailability enhancement techniques of curcumin, covering the recent progress on chemical and pharmaceutical technology techniques, the use of new materials for formulation preparation, and the use of natural compound enhancers. In addition, the recent developed transdermal curcumin delivery is also presented.


Chairungsee S.,Walailak University
Proceedings - International Workshop on Database and Expert Systems Applications, DEXA | Year: 2017

In this paper, the computation of palindrome detection has been studied. The presented approach is related to the concept of the Longest Previous Reverse Factor (LPrF) table. This table stores the longest previous reverse factor occurring at each position of a string. In addition, this table is useful for data compression and is related to Ziv-Lempel factorization, a well-known technique for data compression. A method that is presented for computation of the palindrome detection based on the LPRF table applied the Augmented Position Heap of a given string. This algorithm is a linear time and a linear memory space. This algorithm is useful for RNA secondary structure prediction and for data compression. © 2016 IEEE.


Chaijan M.,Walailak University
Food Chemistry | Year: 2011

The effect of wet and dry saltings on the physicochemical changes of tilapia (Oreochromis niloticus) muscle was investigated. Dry salting resulted in the higher rate of salt uptake into tilapia muscle facilitating the faster decrease in Aw (p < 0.05). The pH of both dry and wet salted fish muscles tended to decrease throughout the salting time and the lower pH was found in dry salted fish (p < 0.05). The increase in the protein content in the salting medium was found during wet salted tilapia production (p < 0.05). The TCA-soluble peptide content tended to decrease with increasing the salting time in both salting methods (p < 0.05), suggesting a leaching effect of the salting medium or the exudative loss occurred in salted tilapia. Wet salting caused the greater formation of metmyoglobin in tilapia muscle when compared to dry salting at all time points (p < 0.05) and the content of metmyoglobin increased as salting time increased in both salting methods (p < 0.05). A lowered metmyoglobin with a lowered redness index of dry salted tilapia muscle was found, indicating the continuous oxidation of metmyoglobin to other hypervalent derivatives and hence the discolouration of salted tilapia. Lipid hydrolysis and oxidation of tilapia meat occurred with varying degrees in both salting methods and these changes depended on salting time. Dry salting resulted in a higher oxidation of tilapia muscle lipid as indicated by the higher PV and TBARS throughout the salting period when compared with that of wet salting (p < 0.05). In conclusion, the physicochemical changes of tilapia muscle during salting are governed by the salting method and the salting time applied. © 2011 Elsevier Ltd. All rights reserved.


Palipoch S.,Walailak University
African journal of traditional, complementary, and alternative medicines : AJTCAM / African Networks on Ethnomedicines | Year: 2013

Acute kidney injury (AKI) is the common clinical syndrome which is associated with increased morbidity and mortality. The severity extends from less to more advanced spectrums which link to biological, physical and chemical agents. Oxidative stress (OS)-related AKI has demonstrated the increasing of reactive oxygen species (ROS) and reactive nitrogen species (RNS) and the decreasing of endogenous antioxidants. Medicinal plants-derived antioxidants can be ameliorated oxidative stress-related AKI through reduction of lipid peroxidation (LPO) and enhancement of activities and levels of endogenous antioxidants. Therefore, medicinal plants are good sources of exogenous antioxidants which might be considered the important remedies to ameliorate pathological alterations in oxidative stress-related AKI.


Channuie P.,Walailak University
International Journal of Modern Physics D | Year: 2014

In light of BICEP2, we re-examine single field inflationary models in which the inflation is a composite state stemming from various four-dimensional strongly coupled theories. We study in the Einstein frame a set of cosmological parameters, the primordial spectral index ns and tensor-to-scalar ratio r, predicted by such models. We confront the predicted results with the joint Planck data, and with the recent BICEP2 data. We constrain the number of e-foldings for composite models of inflation in order to obtain a successful inflation. We find that the minimal composite inflationary model is fully consistent with the Planck data. However it is in tension with the recent BICEP2 data. The observables predicted by the glueball inflationary model can be consistent with both Planck and BICEP2 contours if a suitable number of e-foldings are chosen. Surprisingly, the super Yang-Mills inflationary prediction is significantly consistent with the Planck and BICEP2 observations. © 2014 World Scientific Publishing Company.


Chimsung N.,Walailak University
Songklanakarin Journal of Science and Technology | Year: 2014

Maturation diets for shrimp ideally comprise excellent digestible protein, essential fatty acids, and cholesterol and chemo-attractant properties which are found in natural food sources in the shrimp habitat. Fresh feeds typically including polychaete worms, mollusks and crustaceans have been extensively used for shrimp broodstock. However, their nutritional value can vary with species, season of harvest and life stage. Alternatively, compound diets have been formulated based on the nutritional profile of fresh feeds have being produced in a semi-moist diet and dried pellets. But, substitution of fresh feeds by compound diets is scarce due to lack of information on the quantitative dietary requirements of shrimp broodstock. For most Penaeus monodon hatcheries, good reproductive performance was obtained when shrimp broodstock were fed a mixture of fresh feeds and compound feeds.


Suwanbamrung C.,Walailak University
Asian Pacific Journal of Tropical Disease | Year: 2012

Objective: To develop children's basic knowledge and activities to solve the dengue problem, and to evaluate the results from children's activities. Methods: Participatory Action Research (PAR) was applied in five steps: 1) preparation step; 2) assessment step; 3) children's activities planning step; 4) implementation step; 5) evaluation step. Basic knowledge of dengue was evaluated by questionnaires (17 items) and analysis pre and post-activities by a Chi-square statistic test. The children's understanding of the dengue problem was evaluated by drawing pictures and participation of children's activities. Larval Indices (BI, HI, and CI) were ratio analysis which related dengue outbreak measurement. Results: Three groups for children' activities were: 1) group leaders (13 children); 2) general children; 3) a support group from the community. " Education of dengue learning", " dengue prevention campaign", and " the recycle garbage bank" were core children's activities. Most children's knowledge question items showed an increase from pre-activities to post-activities, and a half of all questions items were statistically significantly different (P<0.05). There were five categories of children's reflection from the drawn picture that showed understanding of the solution to dengue problems and methods for eliminating sites of mosquito breeding in the community. Their households had increased garbage management, and thus decreased numbers of mosquito breeding types such as larval indices (BI, HI, and CI) which decreased from before the activities (93, 30, and 14) to after them (7, 5, and 1). Furthermore, no instances of dengue morbidity or the mortality rate occurred during the study. Conclusions: Although there was an increase in the children's knowledge and activities, and a decrease in larval indices ratio, the high risk of a dengue epidemic might be found because the ratios of larval indices were based on community's behaviors. Thus, it is essential for children and all stakeholders in and out of the community needed to better combat the dengue problem. © 2012 Asian Pacific Tropical Medicine Press.


Matan N.,Walailak University
International Food Research Journal | Year: 2012

Antimicrobial activity of whey protein edible film incorporated with essential oils (cinnamonoil, clove oil, anise oil, turmeric oil, guava leaf oil, nutmeg oil and lime oil) at 2%, 4% and 6%(vol/vol) against major molds (Aspergillus flavus, Penicillium sp.) and bacteria (Staphylococcus aureus) found on dried fish (Decapterus maruadsi) were investigated using circular discs of edible film. Zones of inhibition were measured after an incubation period. The film containing anise oil was the most effective against mold than the other essential oils (P < 0.05). Storage tests were carried out for the dried fish packaged with edible film containing 4% and 6% (v/v) of anise oilstored at 30 °C for 28 days. This was found to extend the shelf life of the dried fish for up to 21 days. In addition, the fillets (3 cm × 2 cm) of the dried fish coated with 4% and 6% of anise oil were fried in vegetable oil for 1-2 min for the sensory test. Results from the sensory test showed that panelists were unable to detect the flavour and aroma differences between the control dried fish samples and those treated with 4% anise oil but a difference was detected for 6% anise oil. These findings illustrated that the shelf life of the dried fish could be extended using ediblefilm with incorporated essential oils.


Channuie P.,Walailak University
Nuclear Physics B | Year: 2015

In this article, we review how strong dynamics can be efficiently employed as a viable alternative to study the mechanism of cosmic inflation. We examine single-field inflation in which the inflaton emerges as a bound state stemming from various strongly interacting field theories. We constrain the number of e-foldings for composite models of inflation in order to obtain a successful inflation. We study a set of cosmological parameters, e.g., the primordial spectral index ns and tensor-to-scalar ratio r, and confront the predicted results with the joint Planck data, and with the recent BICEP2 data. © 2015 The Author.

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