Mae Fah Luang University
  • Chiang Rai, Thailand
Recent publications
Cosmetic consumers’ demand upon natural/eco-friendly and sustainable products are increasing. Those of cosmetic substances upcycled from agricultural industries are of significance in terms of availability and feasibility. Accordingly, spent coffee grounds left over from processing of coffee products are revealed as a renewable source for cosmetics. Spent coffee oils were prepared by several methods. The fatty acid composition was determined as methyl ester derivatives by gas chromatography. The analyses gave comparative yields of extracts (8–16%) and fatty acids (78–94%). Palmitic and linoleic acids were the major fatty acid constituents followed by oleic and stearic acids. The oil was proved to be practical for cosmetics based on its physicochemical properties, with 95.05 ± 3.05% of makeup removal efficacy. Stable spent coffee oil removers were developed, among which that of 40% oil formulation was significantly better in removal efficacy than the 35% (90.59 ± 1.30 and 81.76 ± 1.06%, p < 0.01). The spent coffee oil remover was safe and satisfied in 20 female volunteers. The oil is evidenced as the sustainable cleansing agent for a high-performance makeup remover. Spent coffee oil is appointed as a promising source of high-value added products, i.e. cosmetics and personal care that the tendency for sustainable/naturally derived cosmetic ingredients is increasing. Successive management of coffee processing waste into a more profitable cosmetic product is highlighted.
Background: Keloid (KD) treatment is challenging for both physicians and patients. It can be functional debilitating and psychologically distressing. Available current therapeutics modalities give inconsistently effective results. Objectives: To evaluate the efficacy and safety of innovative cold atmospheric plasma (CAP) technology in the treatment of keloid METHODS: This prospective, randomized control trial, the assessor-blinded trial, includes 18 patients with keloids. The keloid lesion was divided into two halves. One side was randomly treated with CAP technology biweekly on the same treated side for five sessions with a follow-up 30 days after finishing the final treatment. Another half was left untreated as a control. Efficacy assessment using POSAS, VSS, Patients' satisfaction scale, Antera 3D® skin imaging system. The safety assessment using VAS and adverse effects monitoring was completed. Results: Objective assessment using Antera 3D® skin imaging system (Miravex, Dublin, Ireland) showed statistically significant improvement (p-value <0.05) on the treated side compared to the untreated side in all parameters, color, melanin, hemoglobin, texture, except for volume. POSAS, patient and observer overall opinion score, and patient and observer total score in the summary of all rated characteristics, comparing the treated and untreated areas, showed a statistically significant reduction in all parameters after two treatments (*P-value < 0.05). VSS showed statistically significant improvement after the second treatment and continued to the last follow-up. Most patients rated satisfaction scales up to 72.2% as moderate improvement, 11.1% as great improvement, 11.1% as slight improvement, and 5.6 % as no change. The adverse effect was only a small scab in one patient. Conclusion: CAP technology could be considered an alternative treatment for keloid offering mild to moderate improvement with minimal side effects.
Fungi are an understudied resource possessing huge potential for developing products that can greatly improve human well-being. In the current paper, we highlight some important discoveries and developments in applied mycology and interdisciplinary Life Science research. These examples concern recently introduced drugs for the treatment of infections and neurological diseases; application of –OMICS techniques and genetic tools in medical mycology and the regulation of mycotoxin production; as well as some highlights of mushroom cultivaton in Asia. Examples for new diagnostic tools in medical mycology and the exploitation of new candidates for therapeutic drugs, are also given. In addition, two entries illustrating the latest developments in the use of fungi for biodegradation and fungal biomaterial production are provided. Some other areas where there have been and/or will be significant developments are also included. It is our hope that this paper will help realise the importance of fungi as a potential industrial resource and see the next two decades bring forward many new fungal and fungus-derived products.
Mycocaliciales comprise non-lichenized either saprotrophic or lichenicolous fungi which occur in temperate and tropical regions. The mazaediate, saprotrophic and monospecific genus, Pyrgidium, is currently assigned to this order, yet the phylogenetic placement of the genus has remained uncertain due to the absence of molecular data. In order to investigate the systematic position of Pyrgidium, two specimens collected in Brazil and Thailand, respectively, were used to generate mtSSU, SSU, LSU and ITS sequences. However, given that most other representatives of this order only have LSU and ITS sequences available, the phylogenetic reconstruction was limited to these two markers. The phylogenetic analyses confirmed placement of the genus within Mycocaliciales, the genus possessing a sister group relationship with the lichenicolous genus Sphinctrina. Detailed morphological descriptions and illustrations are provided, including those for type specimens of the various synonyms subsumed under the hitherto only accepted species, Pyrgidium montellicum (Beltr.) Tibell. The ascospore morphology was investigated using compound and scanning electronic microscopy (SEM). Principal component analysis (PCA) was performed for the ascospore size using PC-ORD 7. The molecular data and re-examination of the type specimens support the monospecific nature of this genus.
This study concentrated on developing quercetin/cyclodextrin inclusion complex-loaded polyvinyl alcohol (PVA) hydrogel for enhanced stability and solubility. Quercetin was encapsulated in hydroxypropyl-β-cyclodextrin (HP-β-CD) by the solvent evaporation method. The prepared quercetin/HP-β-CD inclusion complex showed 90.50 ± 1.84% encapsulation efficiency (%EE) and 4.67 ± 0.13% loading capacity (%LC), and its successful encapsulation was confirmed by FT-IR and XRD. The quercetin/HP-β-CD inclusion complex was well dispersed in viscous solutions of PVA in various amounts (0.5, 1.0, 1.5. 2.5, and 5.0% w/v ratio), and the drug-loaded polymer solution was physically crosslinked by multiple freeze–thaw cycles to form the hydrogel. The cumulative amount of quercetin released from the prepared hydrogels increased with increasing concentrations of the inclusion complex. The introduction of the inclusion complex into the PVA hydrogels had no influence on their swelling ratio, but gelation and compressive strength reduced with increasing inclusion complex concentration. The potential cytotoxicity of quercetin/HP-β-CD inclusion complex hydrogels was evaluated by MTT assay and expressed as % cell viability. The results show biocompatibility toward NCTC 929 clone cells. The inhibitory efficacy was evaluated with 2, 2-diphenyl-1-picrylhydrazyl (DPPH) free radical scavenging assay, and the results show a higher level of antioxidant activity for quercetin/HP-β-CD inclusion complex hydrogels compared with free quercetin. The findings of our study indicate that the developed quercetin/HP-β-CD inclusion complex hydrogels possess the required properties and can be proposed as a quercetin delivery system for wound-healing applications.
This article presents the design and fabrication of an air purifier that uses a water-based technique to clean indoor/outdoor transitional air to provide a low-tech air purifier against the annual smog crisis and the ongoing COVID-19 pandemic. The air purifier was designed and built. All tests were conducted in a closed room as well as a semi-outdoor area. Particle sizes of PM0.3, 0.5, 1.0, 3.0, 5.0, and 10 μm (particle/m³) were measured at an air inlet, air outlet, 2 m from an air inlet, and 4 m from an air outlet after 0, 5, 10, 15, and 20 min of air treatment, respectively, as well as CO2 levels and relative humidity (RH). The average airflow rate was also measured. When compare to 0 min, all parameters, except semi-outdoor PM0.3 and CO2 levels, tend to decrease in both indoor and semi-outdoor conditions. When measure by total airflow specification of a dual ventilation fan, the average airflow rate at an air outlet is reduced by 20 times. Article Highlights Design and fabrication of a water-based air purifier. A low-tech air purifier helping to protect against the annual smog crisis and the ongoing COVID-19 pandemic. The novel water-based air purifier effectively traps air particles ranging in size from 0.5 to 10 µm.
Background Hill tribe children, an ethnic minority group in Thailand, experience wide-ranging social and health inequalities. Previous reports indicate that hill tribe children, especially age under 5 years, face social health disadvantages but little is known about the underlying causes. Exploring healthcare utilization among hill tribe children is therefore essential and it may well provide some insight. Methods A qualitative study was conducted using purposive sampling techniques to recruit participants based on our criteria. In-depth interviews and focus-group discussions were employed to explore the experiences of parents ( n = 20), community leaders ( n = 20), and healthcare providers ( n = 20) when caring for children aged under 5 years. Interview transcripts were coded, and thematic analysis was then performed. Results The participants shared their experiences with accessing healthcare services in underserved areas. Barriers to access was the central theme identified. Sub-themes included: (1) distance matters, (2) education and socioeconomic deprivation, (3) lack of cultural sensitivity, (4) communication problems, (5) tradition, beliefs, and differences in cultural practice, (6) lack of child health professionals, and (7) bureaucratic hurdles. Conclusions Healthcare services and environments must be transformed to provide healthcare services, education, and information appropriate to the cultures and beliefs prevalent in the hill tribe population.
In this paper, we propose a new set of efficient features for the gaze estimation system that successfully works with a simple and cheap eye gazing system. These features are composed of Pupil – Glint vectors, Pupil – inner-eye-Corner (canthus) vectors, Glint – inner-eye-Corner vectors, distance vector that connects 2 inner-eye-corners, angles between Pupil – Glint vectors and the Glint – inner-eye-Corner vectors, and deviation angle. These features together can capture the head movement and positions of the eyes relative to the position of the screen effectively. From the investigating results, ANN with 2 hidden layers provided the best classification in 15 regions of interest under the proposed features which has an accuracy of 97.71%, delivering better performance than the other techniques. Our proposed features are applicable for real-time applications and fit with low cost and simple system, therefore, it can be widely used for disabled and special need persons in various HCI applications.
Translocating topsoil from an appropriate donor forest is a promising strategy to restore seriously degraded sites. However, some dominant or constructive species did not survive due to plant stress in the seedling stage, which ultimately led to a poor community structure and low similarity between new communities and donor forest. In this study, we replaced the topsoil of karst rocky desertification with forest topsoil and imposed different shading and watering treatments following quadratic saturation D-optimum design. Richness, abundance, height and base diameter of woody species (trees + shrubs) were measured yearly to construct mathematical equation between them and shade degrees (SD) and water quantity (WQ) by using multiple stepwise regression. Results displayed a positive linear relationship between richness of woody species and SD at the second year of topsoil translocation, which changed to a parabolic relationship at the fifth year with a maximum 30.8 species when SD was 37.5 %. The positive linear relationship between density of woody species, shrubs and trees and SD at the second year transformed into a parabolic relationship at the fifth year, and density reached maximum 6.3, 3.7 and 3.8 seedlings/m² when SD were 41.7, 38.9 and 45.0%, respectively. In contrast, the density of Paliurus orientalis and Sophora viciifolia turned into a negative linear relationship with SD at the fifth year. Moreover, although the effect of SD and WQ on height of woody species increased over time, shading inhibited base diameter of shrubs and height of Quercus cocciferoides, Sapium sebiferum and Fraxinus malacophylla at the fifth year. We concluded that no-shading and heavy shading reduced species diversity, and light to moderate shading should be recommended in first 2–3 years after topsoil translocation to enhance woody species survival and accelerate similar forest community establishment providing guidance for the management, regeneration and restoration of native forest in semi-arid areas.
Phytochemical investigations of the leaf and pod extracts of Millettia brandisiana Kurz led to the isolation and identification of four previously undescribed rotenoids, (–)-(6aS,12aS)-millettiabrandisins A–C and (–)-(6aS,12aS)-6-deoxyclitoriacetal, two previously undescribed isoflavones, millettiabrandisins D and E, and 20 known compounds. The structures of previously undescribed compounds were determined on the basis of NMR and MS data. The absolute configurations of (–)-(6aS,12aS)-millettiabrandisins A–C were determined from the comparison of their experimental and calculated ECD spectra. (–)-(6aR,12aR)-12a-Hydroxy-α-toxicarol was also confirmed by X-ray crystallographic data. Some isolated compounds were evaluated for their cytotoxicity against three cancer cell lines, including lung cancer (A549), colorectal cancer (SW480), and leukemic cells (K562). Of these, α-toxicarol displayed the best cytotoxicity against lung cancer (A549) and leukemic cells (K562) with the IC50 values of 104.4 and 67.5 μM, respectively. 6″,6″-Dimethylchromene-[2″,3″:7,8]-flavone showed the highest cytotoxicity against colorectal cancer (SW480) with an IC50 value of 97.2 μM.
1-Octen-3-ol is a volatile oxylipin found ubiquitously in Basidiomycota and Ascomycota. The biosynthetic pathway forming 1-octen-3-ol from linoleic acid via the linoleic acid 10(S)-hydroperoxide was characterized 40 years ago in mushrooms, yet the enzymes involved are not identified. The dioxygenase 1 and 2 genes (Ccdox1 and Ccdox2) in the mushroom Coprinopsis cinerea contain an N-terminal cyclooxygenase-like heme peroxidase domain and a C-terminal cytochrome P450-related domain. Herein, we show that recombinant CcDOX1 is responsible for dioxygenation of linoleic acid to form the 10(S)-hydroperoxide, the first step in 1-octen-3-ol synthesis, whereas CcDOX2 conceivably forms linoleate 8-hydroperoxide. We demonstrate that knockout of the Ccdox1 gene suppressed 1-octen-3-ol synthesis, although added linoleic acid 10(S)-hydroperoxide was still efficiently converted. The P450-related domain of CcDOX1 lacks the characteristic Cys heme ligand and the evidence indicates that a second uncharacterized enzyme converts the 10(S)-hydroperoxide to 1-octen-3-ol. Additionally, we determined the gene knockout strain (ΔCcdox1) was less attractive to fruit fly larvae, while the feeding behavior of fungus gnats on ΔCcdox1 mycelia showed little difference from that on the mycelia of the wild-type strain. The proliferation of fungivorous nematodes on ΔCcdox1 mycelia was similar to or slightly worse than that on wild-type mycelia. Thus, 1-octen-3-ol seems to be an attractive compound involved in emitter–receiver ecological communication in mushrooms.
Diabetes mellitus is the most common non-infective disease characterized by hyperglycemia (high level of blood glucose). Formation of advanced glycation end products (AGEs) in long termed-hyperglycemia and oxidative stress are the key factors to accelerate diabetic complications. To screen potential candidates for treating diabetes, total phenolic content, total flavonoid content, antioxidant activity from crude extracts of some Thai edible plants were primarily assessed, and the inhibiting potential of diabetes and its complications provided from some of these plants were evaluated in terms of their inhibitory activities of α-amylase, α-glycosidase, and AGEs formation. The highest amounts of phenolic and flavonoid compounds were found in the ethanolic extract of Caesalpinia mimosoides (S20, 12.63 ± 1.70 mg GAE/g DW) and Glochidion hirsutum (S8, 3.02 ± 0.25 mg CE/g DW), respectively. The highest antioxidant activity was found in Schinus terebinthifolius Raddi (S26, 217.94 ± 32.30 μg AAE/g DW) whereas the highest inhibitory activities of α-amylase and α-glycosidase were obtained from Basella alba L. (S11, IC50 = 0.21 ± 0.01 mg/ml) and S. terebinthifolius (S26, IC50 = 0.05 ± 0.02 mg/ml) respectively. The inhibitory effects of AGEs formation were studied in vitro using two model systems: BSA-glucose and BSA-methylglycoxal (MGO). The extracts of Glochidion hirsutum (Roxb.) Voigt (S8, IC50 = 0.20 ± 0.01 mg/ml) and Polygonum odoratum Lour. (S13, IC50 = 0.03 ± 0.01 mg/ml) exhibited the inhibitory activity of AGEs formation derived from glucose (BSA-glucose system) stronger than aminoguanidine (AG) (0.26 ± 0.00 mg/ml), which is a common AGEs formation inhibitory drug. By BSA-MGO assay, the inhibition of some selected extracts in this study (G. hirsutum, G. sphaerogynum, and S. terebinthifolius with IC50 = 0.11 ± 0.01, 0.11 ± 0.01, and 0.10 ± 0.00 mg/ml, respectively) were slightly less efficient than AG (the IC50 = 0.06 ± 0.00 mg/ml). These results indicated that some selected Thai edible plants in this present study provided potential applications towards the prevention of diabetes and their complications via the inhibitory of α-amylase, α-glycosidase, AGEs formation, and oxidative stress. This fundamental information would be important for alternative drug discovery and nutritional recommendations for diabetic patients.
The human development index (HDI) is an inclusive indicator for measuring the standard of living with greater emphasis on development than the gross domestic product. The purpose of this study is to investigate the impact of economic growth, renewable energy consumption, research and development expenditure, and total natural resource rent on the HDI in the top ten human development countries. For this reason, we used datasets for 1996–2007 and employed a series of advanced econometric methods [the Driscoll-Kraay, feasible generalized least square (FGLS), and generalized method of moments (GMM)] to mitigate the existing cross-sectional problem. This study demonstrates that economic growth, renewable energy consumption, research and development expenditure, and total natural resources rent tested positive on the HDI. While the Dumitrescu-Hurlin panel causality tests showed a bidirectional relationship between the HDI and economic growth. In addition, a unidirectional causality relationship was found from the HDI to renewable energy consumption, and to research and development expenditure. The policy implication highlighting the directions for the use of variables in the context of sustainability is also discussed.
Strawberry is a widely cultivated and economically important fruit crop in China. During a collection survey in the summer of 2021, leaf spot symptoms were observed from a strawberry field in Guangdong province, China. Three Fungal isolates obtained from collected samples were characterized by morpho molecular phylogenetic analysis and pathogenicity tests on potted strawberry plant leaves. The pathogen was identified as Pseudopithomyces maydicus and constitutes the first report of this fungi causing leaf spots on strawberry.
This work presents the development of a microplate spectrophotometric method for determination of indole-3-carbinol in dietary supplements. The colorimetric procedure is based on the reaction of indole-3-carbinol with the p-dimethylaminocinnamaldehyde (DMACA) reagent under acidic conditions. The absorbance of the colored product measured at 675 nm was used to determine the target analyte. To achieve optimal spectrophotometric performance, the DMACA reagent concentration, the hydrochloric acid concentration, and the reaction time were optimized. The developed technique performed well under the optimal conditions, with a linear calibration range of 30 to 300 mg L-1 and a high correlation coefficient (r2 = 0.9954). The limit of detection and limit of quantification were 7.8 mg L-1 and 26.2 mg L-1, respectively. This approach demonstrated good repeatability (intra- and inter-day precision) with a % RSD lower than 9.4%, good accuracy with acceptable relative recoveries in the range of 98 to 106%, and high sample throughput (24 detection per min). This simple, rapid, and multi-sample analysis approach for routine analysis of indole-3-carbinol has the potential to be used for the quality control of dietary supplements.
Background: Chronic obstructive pulmonary disease (COPD) is a chronic, progressive and debilitating disease that affects an individual's quality of life (QOL), especially those patients living in poor living environments. This study aimed to assess the level of good QOL and determine the factors associated with good QOL among COPD patients living in Zhejiang Province, China. Methods: An analytical cross-sectional study was conducted to collect information about COPD patients in six tertiary hospitals in Zhejiang province. A validated questionnaire was used to collect general information, environmental factors, COPD stage, and treatment for the included patients. The standardized St. George's Respiratory Questionnaire (SGRQ) was used to assess QOL. Random sampling was used to recruit 420 participants. Questionnaires were completed by interviews. Binary logistic regression was used to predict influencing factors of good QOL among COPD patients living in Zhejiang Province, China at a significance level of α = 0.05. Results: The overall good QOL among COPD patients was 25.7%. In the multivariable logistic regression, six variables were found to be associated with good QOL; airflow limitation severity (adjusted odds ratio (AOR)=8.69, 95% CI=2.65-28.46), duration of illness (AOR=8.25, 95% CI=1.98-34.29), number of hospitalisations within the past 3 months (AOR 5.39, 95% CI=1.07-27.24), annual treatment expenses (AOR=3.68, 95% CI=1.31-10.34), educational level (AOR=3.20, 95% CI=1.11-9.22), and type of medical insurance (AOR=2.21, 95% CI=1.04-4.71). Conclusions: It is evident from this study that good QOL among COPD patients is strongly related to the stage of COPD and the financial burden on treatment. Early detection and treatment including exacerbations strategies are crucial to improving COPD patients’ QOL.
The effects of fish oil (FO) or omega-3 supplementation on cognition has been the subject of several previous clinical trials. However, the effect of different doses taken chronically on cognition in children has not been well studied. In order to address this gap in our knowledge, we conducted a randomized, double-blind, placebo-controlled clinical trial. A total of one hundred and twenty healthy, cognitively normal Thai children aged 6-12 years old consumed daily low dose FO (260 mg Docosahexaenoic acid (DHA)), high dose FO (520 mg DHA), or placebo (Soybean oil) for 12 weeks. Cognitive function was assessed using a computerized cognitive battery, including the Go/NoGo, N-Back, and Digit Span tests as well as concurrent event-related potentials (ERPs), which together measured attention, processing speed, inhibition, and memory at baseline and 12 weeks. We hypothesized that compared to placebo, the two FO groups would show improved cognitive performance and shorter ERP latencies. In total, 42, 39, and 39 participants completed each of the test (FO-A, FOB) and placebo groups (P) allocations, respectively, and were analyzed (120 in total across the three groups). No significant differences were observed between reaction times (RTs), accuracy, or error rates for all three of the cognitive tests. The ERP measurement and analysis of brain activity during the cognitive tests showed an increase in ERP amplitude. For all cognitive tests, there was a dose-response effect of FO on ERP amplitudes. These findings indicate that fish oil intake leads to a consistent improvement in attention and cognitive processing ability measured by changes in brain activity during working and long-term memory processes. This is the first study to directly quantify such an effect through simultaneous measurement of manual and mental activity during cognitive tasks following chronic FO use in children.
Globally, the quality of agricultural soils is in decline as a result of mismanagement and the overuse of agrichemicals, negatively impacting crop yields. Agaricus subrufescens Peck is widely cultivated as an edible and medicinal mushroom; however, its application in soil bioremediation and amendment remains insufficiently studied. In order to determine if A. subrufescens can positively impact agricultural soils, we designed two experiments: the first, a glasshouse experiment investi�gating the ways in which A. subrufescens production alters soil nutrients and soil health; the second, a laboratory experiment investigating if A. subrufescens can degrade beta-cypermethrin (β-CY) and glufosinate ammonium (Gla), two widely used agrichemicals. The glasshouse experiment results indicated that the use of compost and compost combined with A. subrufescens led to increases in soil organic matter, nitrogen, phosphorus, and potassium compared to the control treatments (sterilized soil). However, the incorporation of A. subrufescens with compost resulted in significantly greater levels of both available nitrogen and available phosphorus in the soils compared to all other treat�ments. Laboratory experiments determined that the mycelium of A. subrufescens were unable to grow at concentrations above 24.71 µg/mL and 63.15 µg/g for β-CY and Gla, respectively. Furthermore, results indicated that fungal mycelia were able to degrade 44.68% of β-CY within 15 days, whereas no significant changes were found in the concentration of Gla. This study highlights that cultivation of A. subrufescens may be a sustainable alternative for the rehabilitation of agricultural soils, whilst providing an additional source of income for farmers.
Cucurbitariaceae has a high biodiversity worldwide on various hosts and is distributed in tropical and temperate regions. Woody litters collected in Changchun, Jilin Province, China, revealed a distinct collection of fungi in the family Cucurbitariaceae based on morphological and molecular data. Phylogenetic analyses of the concatenated matrix of the internal transcribed spacer (ITS) region, the large subunit (LSU) of ribosomal DNA, the RNA polymerase II subunit (rpb2), the translation elongation factor 1-alpha (tef 1-a) and β-tubulin (b-tub) genes indicated that the isolates represent Allocucurbitaria and Parafenestella species based on maximum likelihood (ML), maximum parsimony (MP) and Bayesian analysis (BPP). We report four novel species: Allocucurbitaria mori, Parafenestella changchunensis, P. ulmi and P. ulmicola. The importance of five DNA markers for specieslevel identification in Cucurbitariaceae was determined by Assemble Species by Automatic Partitioning (ASAP) analyses. The protein-coding gene b-tub is determined to be the best marker for species level identification in Cucurbitariaceae.
In the present study, we report two new asexual fungal species (i.e., Discosia rhododendricola, Neopestalotiopsis rhododendricola (Sporocadaceae) and a new host for a previously described species (i.e., Diaporthe nobilis; Diaporthaceae). All species were isolated from Rhododendron spp. in Kunming, Yunnan Province, China. All taxa are described based on morphology, and phylogenetic relationships were inferred using a multigenic approach (LSU, ITS, RPB2, TEF1 and TUB2). The phylogenetic analyses indicated that D. rhododendronicola sp. nov. is phylogenetically related to D. muscicola, and that N. rhododendricola sp. nov is related to N. sonnaratae. Diaporthe nobilis reported herein as a new host record from Rhododendron sp. for China, and its phylogeny is depicted based on ITS, TEF1 and TUB2 sequence data.
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3,306 members
Thitipone Suwunwong
  • Applied Chemistry. School of Science
Siam Popluechai
  • School of Science
Sasitorn Chusri
  • School of Health Science
Wirongrong Tongdeesoontorn
  • School of Agro-Industry
Kowit Nambunmee
  • Occupational Health and Safety, Public Health, School of Health Science
57100, Chiang Rai, Thailand
Head of institution
Assoc. Prof. Dr. Chayaporn Wattanasiri
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