Scopus 2016-2017
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Publication Metadata only Newsaday: A personalized Thai news recommendation system(2017-10-19) Paniddaporn Suppasert; Ravikarn Pungprasert; Kamonchanok Putkhaw; Suppawong Tuarob; Mahidol University© 2017 IEEE. Nowadays, news are available ubiquitously in heterogeneous forms, from both offline and online sources. An example of offline news resource includes newspaper which contains only text and pictures. Online news articles have recently emerged to enhance news consuming experiences, such as embedding videos to allow readers to illustrate real situations. However, to read news articles online, users may have faced problems. For example, they are bombarded with articles which are not related to their interest. From this problem, it would be better if users can manage their preferences to perceive news. Therefore, Newsaday is proposed and prototyped to mitigate such issues. Newsaday is a personalized Thai news recommendation application to support users to gather information from online news websites. The system applies natural language processing algorithms to pull news articles from online news websites. If users want the system to recommend news articles, they can specify their preferences either from explicitly choosing the news categories or implicitly indicating favorite news articles they have read. Then, the system adaptively learns the uses’ preferences, and uses the information to retrieve relevant news articles.Publication Metadata only Natural Plasmodium vivax infections in Anopheles mosquitoes in a malaria endemic area of northeastern Thailand(2017-12-01) Petchaboon Poolphol; Ralph E. Harbach; Patchara Sriwichai; Kittipat Aupalee; Jetsumon Sattabongkot; Chalermpon Kumpitak; Wichai Srisuka; Kritsana Taai; Sorawat Thongsahuan; Rochana Phuackchantuck; Atiporn Saeung; Udom Chaithong; Chiang Mai University; Office of Disease Prevention and Control 7; The Natural History Museum, London; Mahidol University; Entomology Section; Western University; Prince of Songkla University© 2017, Springer-Verlag GmbH Germany. There was recently an outbreak of malaria in Ubon Ratchathani Province, northeastern Thailand. In the absence of information on malaria vector transmission dynamics, this study aimed to identify the anopheline vectors and their role in malaria transmission. Adult female Anopheles mosquitoes were collected monthly by human-landing catch in Na Chaluai District of Ubon Ratchathani Province during January 2014−December 2015. Field-captured mosquitoes were identified to species using morphology-based keys and molecular assays (allele-specific polymerase chain reaction, AS-PCR), and analysed for the presence of Plasmodium falciparum and Plasmodium vivax using an enzyme-linked immunosorbent assay (ELISA) for the detection of circumsporozoite proteins (CSP). A total of 1,229 Anopheles females belonging to 13 species were collected. Four anopheline taxa were most abundant: Members of the Anopheles barbirostris complex, comprising 38% of the specimens, species of the Anopheles hyrcanus group (18%), Anopheles nivipes (17%) and Anopheles philippinensis (12%). The other nine species comprised 15% of the collections. Plasmodium infections were detected in two of 668 pooled samples of heads/thoraces, Anopheles dirus (1/29) and An. philippinensis (1/97). The An. dirus pool had a mixed infection of P. vivax-210 and P. vivax-247, whereas the An. philippinensis pool was positive only for the latter protein variant. Both positive ELISA samples were confirmed by nested PCR. This study is the first to incriminate An. dirus and An. philippinensis as natural malaria vectors in the area where the outbreak occurred. This information can assist in designing and implementing a more effective malaria control programme in the province.Publication Metadata only Ivermectin susceptibility and sporontocidal effect in Greater Mekong Subregion Anopheles(2017-07-07) Kevin C. Kobylinski; Ratawan Ubalee; Alongkot Ponlawat; Chanyapat Nitatsukprasert; Siriporn Phasomkulsolsil; Thanaporn Wattanakul; Joel Tarning; Kesara Na-Bangchang; Patrick W. McCardle; Silas A. Davidson; Jason H. Richardson; Armed Forces Research Institute of Medical Sciences, Thailand; Walter Reed Army Institute of Research; Mahidol University; Nuffield Department of Clinical Medicine; Thammasat University; Armed Forces Pest Management Board© 2017 The Author(s). Background: Novel vector control methods that can directly target outdoor malaria transmission are urgently needed in the Greater Mekong Subregion (GMS) to accelerate malaria elimination and artemisinin resistance containment efforts. Ivermectin mass drug administration (MDA) to humans has been shown to effectively kill wild Anopheles and suppress malaria transmission in West Africa. Preliminary laboratory investigations were performed to determine ivermectin susceptibility and sporontocidal effect in GMS Anopheles malaria vectors coupled with pharmacokinetic models of ivermectin at escalating doses. Methods: A population-based pharmacokinetic model of ivermectin was developed using pre-existing data from a clinical trial conducted in Thai volunteers at the 200 μg/kg dose. To assess ivermectin susceptibility, various concentrations of ivermectin compound were mixed in human blood meals and blood-fed to Anopheles dirus, Anopheles minimus, Anopheles sawadwongporni, and Anopheles campestris. Mosquito survival was monitored daily for 7 days and a non-linear mixed effects model with probit analyses was used to calculate concentrations of ivermectin that killed 50% (LC50) of mosquitoes for each species. Blood samples were collected from Plasmodium vivax positive patients and offered to mosquitoes with or without ivermectin at the ivermectin LC25or LC5for An. dirus and An. minimus. Results: The GMS Anopheles displayed a range of susceptibility to ivermectin with species listed from most to least susceptible being An. minimus (LC50= 16.3 ng/ml) > An. campestris (LC50= 26.4 ng/ml) = An. sawadwongporni (LC50= 26.9 ng/ml) > An. dirus (LC50= 55.6 ng/ml). Mosquito survivorship results, the pharmacokinetic model, and extensive safety data indicated that ivermectin 400 μg/kg is the ideal minimal dose for MDA in the GMS for malaria parasite transmission control. Ivermectin compound was sporontocidal to P. vivax in both An. dirus and An. minimus at the LC25and LC5concentrations. Conclusions: Ivermectin is lethal to dominant GMS Anopheles malaria vectors and inhibits sporogony of P. vivax at safe human relevant concentrations. The data suggest that ivermectin MDA has potential in the GMS as a vector and transmission blocking control tool to aid malaria elimination efforts.Publication Metadata only A Master Shape of Bottles for Design under Desirable Geometry and Top Load Test(2017-02-09) Piyapat Keawjaroen; Chakrit Suvanjumrat; Mahidol University© The Authors, published by EDP Sciences, 2017. Design of plastic bottles had preferred to use computer aided design (CAD) to propose desirable shapes. The strength also was regarded to pass the top load test unless an appearance of plastic bottles. Finite element method (FEM) was employed to analyze and predict the bottle shape which enough to support load under a collapsible regulation. Unfortunately, the redesign of bottle shape always performed when the desirable bottle shape had not passed the test. There was time consumption and loss of opportunity to compete producing of bottles. This research proposed a method to receive a desirable shape of plastic bottles together with top load strength. The master of bottle shape had been created which capable to change any dimensions before generated CAD and performed top load analysis with FEM. The artificial neural network (ANN) was employed to obtain the desirable bottle shape with top load resistance by varying dimension of the master bottle. The plastic bottle design would be performed rapidly with the ANN of master bottle shape. Consequently, the suitable dimension of plastic bottles which achieved by ANN could be used to design a desirable shape of bottles by using CAD and FEM without trial and error.Publication Metadata only A combined approach of hollow microneedles and nanocarriers for skin immunization with plasmid DNA encoding ovalbumin(2017-01-27) Boonnada Pamornpathomkul; Adisak Wongkajornsilp; Wanida Laiwattanapaisal; Theerasak Rojanarata; Praneet Opanasopit; Tanasait Ngawhirunpat; Silpakorn University; Mahidol University; Chulalongkorn University© 2017 Pamornpathomkul et al. The aim of this study was to investigate the use of different types of microneedles (MNs) and nanocarriers for in vitro skin permeation and in vivo immunization of plasmid DNA encoding ovalbumin (pOVA). In vitro skin permeation studies indicated that hollow MNs had a superior enhancing effect on skin permeation compared with solid MN patches, electroporation (EP) patches, the combination of MN and EP patches, and untreated skin. Upon using hollow MNs combined with nanocarriers for pOVA delivery, the skin permeation was higher than for the delivery of naked pOVA, as evidenced by the increased amount of pOVA in Franz diffusion cells and immunoglobulin G (IgG) antibody responses. When the hollow MNs were used for the delivery of nanocarrier:pOVA complexes into the skin of mice, they induced a stronger IgG immune response than conventional subcutaneous (SC) injections. In addition, immunization of mice with the hollow MNs did not induce signs of skin infection or pinpoint bleeding. Accordingly, the hollow MNs combined with a nanocarrier delivery system is a promising approach for delivering pOVA complexes to the skin for promoting successful immunization.Publication Metadata only The history and diversity of Southeast Asia(2017-07-28) Serge Morand; Claire Lajaunie; CNRS Centre National de la Recherche Scientifique; Kasetsart University; Mahidol University; InsermPublication Metadata only Development of monoclonal antibodies specific to ToxA and ToxB of Vibrio parahaemolyticus that cause acute hepatopancreatic necrosis disease (AHPND)(2017-05-01) Pradit Wangman; Parin Chaivisuthangkura; Kallaya Sritunyalucksana; Suparat Taengchaiyaphum; Saengchan Senapin; Chalinan Pengsuk; Paisarn Sithigorngul; Siwaporn Longyant; Srinakharinwirot University; Thailand National Center for Genetic Engineering and Biotechnology; Mahidol University; Thailand National Science and Technology Development Agency© 2017 Elsevier B.V. Toxin A (ToxA) and toxin B (ToxB) of Vibrio parahaemolyticus, which cause acute hepatopancreatic necrosis disease (AHPND), were prepared in a bacterial supernatant from Chinese isolates (CN-VPAHPND) by washing bacterial colonies off of TSA cultures. The supernatant was subsequently used in mouse immunization to produce monoclonal antibodies (MAbs). Three groups of MAbs were selected: one MAb specific to ToxA, two MAbs specific to ToxB and one MAb specific to V. parahaemolyticus (CN-VPAHPND). The MAbs specific to ToxA and ToxB recognized all 10 VPAHPND isolates from China, Vietnam, Malaysia and Thailand, but did not bind to the 20 non-VPAHPND isolates from various other sources, including Vibrio spp. and other bacteria. The MAbs specific to toxins were used to detect the recombinant proteins of His-tagged ToxA and GST-ToxB with sensitivities of 200fmolspot−1 and 10fmolspot−1, respectively, as determined by dot-ELISA. The MAbs were used to detect the toxins produced by bacteria or shrimp tissue lysate spiked with bacteria in a complex tissue sample at concentrations as low as 1CFUml−1 after pre-enrichment of the bacteria for 6h. The third group of MAb was specific to CN-VPAHPND isolate but did not recognize the other 9 out of 10 VPAHPND isolates from Vietnam, Malaysia and Thailand. However, this MAb demonstrated cross-reactivity to 1 out of 20 of the non-VPAHPND isolates and 3 out of 9 of the V. alginolyticus isolates. These findings indicate that the AHPND epidemic in Southeast Asia was not caused by the CN-VPAHPND isolate. The MAbs specific to ToxA and ToxB produced in this study could be used to detect both toxins directly by dot blotting.Publication Metadata only Excretory-secretory product of third-stage Gnathostoma spinigerum larvae induces apoptosis in human peripheral blood mononuclear cells(2017-10-01) Nareerat Viseshakul; Wilanee Dechkhajorn; Surachet Benjathummarak; Supaporn Nuamtanong; Yaowapa Maneerat; Chulalongkorn University; Mahidol University© 2017, Springer-Verlag GmbH Germany. Human gnathostomiasis caused by third-stage Gnathostoma spinigerum larvae (G. spinigerum L3) is an important zoonotic disease in tropical areas of the world. The excretory-secretory products (ES) that are excreted by infective larva play a significant role in host immune evasion and tissue destruction. To investigate the poorly understood mechanisms of G. spinigerum L3 pathogenesis, we focused on the potential effect of ES on inducing apoptosis in human immune cells by using human peripheral blood mononuclear cells (PBMCs) as a model. Early and late apoptosis of PBMCs were assessed following the exposure of these cells to G. spinigerum L3 ES (0.1, 0.5, and 1.0 μg/ml) for 6–48 h. The apoptotic cells were identified by flow cytometric staining of PBMC with FITC-annexin V and propidium iodide. The expression of regulatory genes related to apoptosis mechanisms in ES-treated PBMCs was investigated using a Human Apoptosis RT2 Profiler™ PCR Array. The results showed significant levels of early phase apoptosis at 18 h and of late phase apoptosis at 24 h. We speculate that this apoptosis in PBMCs occurs via the extrinsic pathway. Apoptosis in the ES-induced PBMCs was observed as quickly as 90 min after exposure, and the highest effect was observed at 18–24 h. Furthermore, ES can trigger apoptosis lasting for 48 h. Our findings expand the understanding of one of the mechanisms involved, immune-evasive strategy mechanism used by G. spinigerum larvae during human gnathostomiasis.Publication Metadata only Anti-oviposition activities of used sock media against a dengue vector: prospects of eco-friendly control and solutions to pollution(2017-09-01) Hamady Dieng; Tomomitsu Satho; Fatimah Abang; Fumio Miake; Idris A. Ghani; Nurshilawati A. Latip; Nur Ezzati Aliasan; Sabina Noor; Abu Hassan Ahmad; Hamdan Ahmad; Wan Fatma Zuharah; Abdul Hafiz Ab Majid; Cirilo Nolasco-Hipolito; Ronald Enrique Morales Vargas; Noppawan Phumala Morales; Gabriel Tonga Noweg; Universiti Malaysia Sarawak; Fukuoka University; Universiti Kebangsaan Malaysia; Universiti Sains Malaysia; Mahidol University© 2017, Springer-Verlag GmbH Germany. Yearly, huge amounts of sock refuse are discarded into the environment. Socks contain many molecules, and worn ones, which are rich in smell-causing bacteria, have a strong influence on animals’ behaviors. But the impacts of sock odor on the oviposition behavior of dengue vectors are unknown. We assessed whether Aedes albopictus changes its oviposition activity in response to the presence of used socks extract (USEx) in potential breeding grounds, using choice and no-choice bioassays (NCB). When furnished even chances to oviposit in two sites holding USEx and two others containing water (control), Ae. albopictus deposited significantly less eggs in USEx than in water sites. A similar pattern of oviposition preference was also observed when there were more oviposition options in water. When there were greater oviposition opportunities in USEx sites, Ae. albopictus oviposited preferentially in water. Females laid significantly more eggs during the NCB involving water than USEx. Also, significantly more mature eggs were retained by females in the NCB with USEx than in that with water. These observations strongly suggest the presence of molecules with either repellent or deterrent activities against Ae. albopictus females and provide an impetus to advocate the integration of used socks in dengue control programs. Such applications could be a realistic end-of-life recourse to reroute this waste from landfills.Publication Metadata only Simple test kit based on colorimetry for quantification of magnesium content in natural rubber latex by miniaturized complexometric titration without using masking agent(2017-05-01) Nutthaporn Malahom; Purim Jarujamrus; Rattapol Meelapsom; Atitaya Siripinyanond; Maliwan Amatatongchai; Sanoe Chairam; Ubon Rajathanee University; Mahidol University© 2017 Elsevier Ltd A simple, low-cost and portable field test kit based on colorimetry with detection by naked eye was developed for determination of magnesium content in natural rubber latex (NRL). The miniaturized complexometric titration between Mg2+ and EDTA without any masking agent was a key reaction in this development, which was designed according to the concept of green chemistry by reduction of waste generation and chemical and time consumption. The system enabled quantification of magnesium content in NRL at low concentration with the detection limit being <50 mg L−1, small sample volume uptake (0.18 g, sampling by a small spoon) and use of <1.5 mL reagent volume which was >70 times less than that applied in the conventional method. Moreover, with the presence of potential interference ions, greater selectivity towards magnesium was observed. Furthermore, the reagents used in our developed test kit were stable for >6 months at room temperature. The results obtained on real samples were in agreement with those obtained from the conventional complexometric titration (ISO 17403: 2014(E)) method. The proposed technique provides a low-cost, rapid, simple, selective and on-site analysis of magnesium content in NRL.Publication Metadata only Biodiesel Synthesis from Palm Fatty Acid Distillate Using Tungstophosphoric Acid Supported on Cesium-Containing Niobia(2017-03-01) Chanasuk Surasit; Boonyawan Yoosuk; Manat Pohmakotr; Jonggol Tantirungrotechai; Mahidol University; Thailand National Science and Technology Development Agency© 2016, AOCS. Tungstophosphoric acid supported on cesium-containing niobia (TPA/Csx/Nb2O5, x = 1.0–2.5) catalysts were prepared by a two-step impregnation method, and their physico-chemical properties were investigated. The initial studies on the esterification of oleic acid with methanol revealed that TPA/Cs ratio affected the acidity as well as the activity of the catalysts. Among the catalysts tested, TPA/Cs1.0/Nb2O5exhibited the best performance. In addition, the efficiency of TPA/Cs1.0/Nb2O5for biodiesel synthesis from palm fatty acid distillate (PFAD), a by-product from palm oil industry, was demonstrated, and the reaction parameters were also evaluated. Over 90% yield of FAME was achieved, and the properties of the biodiesel obtained from PFAD met the standard requirements for biodiesel fuel. However, deactivation of the catalysts was observed, possibly due to structural transformation or organic residues blocking the active sites.Publication Metadata only Gas Chromatographic Separation and Identification of Jacaric and Punicic 2-Ethyl-1-Hexyl Esters(2017-04-01) Siriluck Pojjanapornpun; Kornkanok Aryusuk; Narumon Jeyashoke; Supathra Lilitchan; Kanit Krisnangkura; King Mongkut s University of Technology Thonburi; Mahidol University© 2017, AOCS. The present study demonstrates the separation of a critical pair of conjugated linolenic acid (CLN) isomers—jacaric acid (JA; c8, t10, c12-18:3) and punicic acid (PA; c9, t11, c13-18:3)—on a 60-m conventional Supelcowax 10 column. The alkyl esters of different alcohols (C1–C8) of JA and PA were prepared and analyzed isothermally at 220, 230 and 240 °C. The adequacy of their separation was determined from the separation factors (α) and peak resolutions (Rs). Acceptable resolution (Rs = 1.01) of JA and PA was obtained with their 2-ethyl-1-hexyl ester derivatives at a column temperature of 230 °C. In addition, the Gibbs energy of transfer from solution to gas of the three double bonds (ΔslngGu) could be used to describe the interactions of the double bond with the stationary phase. Characterization of 2-ethyl-1-hexyl esters of Jacaranda mimosifolia seed oil at 230 °C demonstrates that the oil contains JA and α- and β-calendic acid as a CLN without the presence of PA. The results suggested that JA could be resolved from PA on a 60-m Supelcowax 10 column as the ethyl hexyl ester.Publication Metadata only Hypermethylation of 28S ribosomal RNA in β-thalassemia trait carriers(2017-01-01) Wannapa Sornjai; Pathrapol Lithanatudom; Jenny Erales; Philippe Joly; Alain Francina; Sabine Hacot; Suthat Fucharoen; Saovaros Svasti; Jean Jacques Diaz; Hichem C. Mertani; Duncan R. Smith; Mahidol University; Chiang Mai University; Centre de recherche en cancérologie de Lyon; Hopital Edouard Herriot© 2016 Elsevier B.V. Ribosome biogenesis is the process of synthesis of the cellular ribosomes which mediate protein translation. Integral with the ribosomes are four cytoplasmic ribosomal RNAs (rRNAs) which show extensive post-transcriptional modifications including 2'-O-methylation and pseudouridylation. Several hereditary hematologic diseases including Diamond-Blackfan anemia have been shown to be associated with defects in ribosome biogenesis. Thalassemia is the most important hematologic inherited genetic disease worldwide, and this study examined the post-transcriptional ribose methylation status of three specific active sites of the 28S rRNA molecule at positions 1858, 4197 and 4506 of β-thalassemia trait carriers and normal controls. Samples from whole blood and cultured erythroid cells were examined. Results showed that site 4506 was hypermethylated in β-thalassemia trait carriers in both cohorts. Expression of fibrillarin, the ribosomal RNA methyltransferase as well as snoRNAs were additionally quantified by RT-qPCR and evidence of dysregulation was seen. Hemoglobin E trait carriers also showed evidence of dysregulation. These results provide the first evidence that ribosome biogenesis is dysregulated in β-thalassemia trait carriers.Publication Metadata only Enhancement of steady-state visual evoked potential-based brain–computer interface systems via a steady-state motion visual stimulus modality(2017-06-01) Yunyong Punsawad; Yodchanan Wongsawat; Mahidol University© 2017 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc. Steady-state visual evoked potential (SSVEP)-based brain–computer interface (BCI) systems are among the most accurate assistive devices for patients with severe disabilities. However, existing visual stimulation patterns lead to eye fatigue, which affects the system performance. Therefore, in this study, we propose two improvements to SSVEP-based BCI systems. First, we propose a novel visual stimulator that incorporates a visual motion stimulus for the steady-state visual stimulus to reduce eye fatigue while maintaining the advantages associated with SSVEPs. We also propose two corresponding feature extraction algorithms, i.e. SSVEP detection and visual attention detection, to capture the phenomena of steady-state motion visual stimulus responses. The accuracy of the test was ∼83.6%. Second, we propose a novel hybrid BCI-SSVEP system and a motion visual stimulus hybrid BCI system to enhance the SSVEP-based BCI system during a state of eye fatigue. Participants used the SSVEP system until reaching a fatigued state and then began using a hybrid motion visual stimulus. The accuracy of the proposed system was ∼85.6%. The proposed improvements can be incorporated into practical BCI systems for wheelchair control. © 2017 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.Publication Metadata only Prevention of periimplant skin inflammation using an acrylic resin housing with a tunnel design for an implant-retained auricular prosthesis(2017-09-01) Hai Hoang Phan; Natdhanai Chotprasert; Prana Shakya; M. L.Theerathavaj Srithavaj; Mahidol University© 2016 Editorial Council for the Journal of Prosthetic Dentistry Implant-retained auricular prostheses offer better retention than conventional adhesive retentive methods. Periimplant skin inflammation, which results from improper substructure design, poor hygiene, skin thickness, and the hot and moist environment around abutments, however, is a common complication of craniofacial implants. This article describes a technique for fabricating an acrylic resin housing design with an extended arm to improve ventilation around implants and to reduce the risk of the silicone prosthesis tearing away from the acrylic resin housing.Publication Metadata only Metal uptake and accumulation by mangrove plant species in Pattani Bay, Thailand(2017-01-01) Weeradej Meeinkuirt; Pungtip Kaewtubtim; Sumalee Seepom; John Pichtel; Mahidol University; Prince of Songkla University; Ball State UniversityPublication Metadata only Sweet waste extract uptake by a mosquito vector: Survival, biting, fecundity responses, and potential epidemiological significance(2017-05-01) Hamady Dieng; Tomomitsu Satho; Fatimah Abang; Nur Khairatun Khadijah Binti Meli; Idris A. Ghani; Cirilo Nolasco-Hipolito; Hafijah Hakim; Fumio Miake; Abu Hassan Ahmad; Sabina Noor; Wan Fatma Zuharah; Hamdan Ahmad; Abdul Hafiz A. Majid; Ronald E. Morales Vargas; Noppawan P. Morales; Siriluck Attrapadung; Gabriel Tonga Noweg; Universiti Malaysia Sarawak; Fukuoka University; Universiti Kebangsaan Malaysia; Universiti Sains Malaysia; Mahidol University© 2017 Elsevier B.V. In nature, adult mosquitoes typically utilize nectar as their main energy source, but they can switch to other as yet unidentified sugary fluids. Contemporary lifestyles, with their associated unwillingness to consume leftovers and improper disposal of waste, have resulted in the disposal of huge amounts of waste into the environment. Such refuse often contains unfinished food items, many of which contain sugar and some of which can collect water from rain and generate juices. Despite evidence that mosquitoes can feed on sugar-rich suspensions, semi-liquids, and decaying fruits, which can be abundant in garbage sites, the impacts of sweet waste fluids on dengue vectors are unknown. Here, we investigated the effects of extracts from some familiar sweet home waste items on key components of vectorial capacity of Aedes aegypti. Adult mosquitoes were fed one of five diets in this study: water (WAT); sucrose (SUG); bakery product (remnant of chocolate cake, BAK); dairy product (yogurt, YOG); and fruit (banana (BAN). Differences in survival, response time to host, and egg production were examined between groups. For both males and females, maintenance on BAK extract resulted in marked survival levels that were similar to those seen with SUG. Sweet waste extracts provided better substrates for survival compared to water, but this superiority was mostly seen with BAK. Females maintained on BAK, YOG, and BAN exhibited shorter response times to a host compared to their counterparts maintained on SUG. The levels of egg production were equivalent in waste extract- and SUG-fed females. The findings presented here illustrate the potential of sweet waste-derived fluids to contribute to the vectorial capacity of dengue vectors and suggest the necessity of readdressing the issue of waste disposal, especially that of unfinished sweet foods. Such approaches can be particularly relevant in dengue endemic areas where rainfall is frequent and waste collection infrequent.Publication Metadata only Effect of post-curing temperature and mechanical surface treatment on shear-bond strength of asbestos-free brake pad(2017-01-01) Danuwat Pupan; Chakrit Suvanjumrat; Watcharapong Chookaew; Mahidol University© 2017 Trans Tech Publications, Switzerland. Brake pad is the combination of lining and metallic components, e.g. steel backing plate (disc brake) and aluminum brake shoe (drum brake). Shear bond strength plays a major role to provide the safety and/or drive performances. This work aimed to study the processing factors affected the bonding strength. The molding temperature couple with post-curing temperature was simultaneously analyzed in order to optimize the processing temperature. The shear bond strengths of metallic plates were continually investigated with regard to the effect of different surface treatments. The obtained results indicated that the mechanical strength was increased as the molding temperature raised in ranges of 160oC to 180oC. Conversely, the deterioration of adhesive strength was progressively presented with rising post curing temperature. In comparing different backing plate, aluminum showed the higher shear bond strength than that of steel plate. In fact, the weakened property of aluminum in nature would be easily destroyed by mechanical treatments. From the shear tested results, an increase of surface roughness was inversely changed the shear bond strength. On the other hand, the contact angle of water droplet affected directly to adhesive strength. It was suggested that an adding surface roughness, commonly used in automotive industry, was inappropriate criteria, whist geometrical surface should be taken into account for improving the shear bond strength. Moreover, the contact angle and mechanical interlocking were recommended to use as a criteria of brake pad shear strength.Publication Metadata only Routes for Roots: A Mapping Shorthand Symbolism with Reference to Nelson Goodman’s Hidden Ars Combinatoria(2017-07-03) Gerald Moshammer; Mahidol University© 2017 Informa UK Limited, trading as Taylor & Francis Group. A shorthand symbolism for the relational mapping of categories (MSS) is introduced and developed on the basis of Nelson Goodman's structural methodology. Through a reconstruction of extensional isomorphism that Goodman introduces as a criterion for definitional accuracy, and a brief reminder of the argument structure behind his ‘new riddle of induction’, Goodman's radical ontological relativism is turned into a protological principle of what I call ‘domain constituting philosophy’. MSS is demonstrated with reference to Goodman's symbol theory, particularly his notion of exemplification, as well as in a final structured comparison of Frege's ‘sense’ with Goodman's straightforward construction of ‘secondary extension’.Publication Metadata only Mercury contamination in environment surrounding coal-fired power plant(2017-05-01) Kamolthip Mahavong; Poranee Pataranawat; Sopa Chinwetkitvanich; Mahidol University© Int. J. of GEOMATE. Fossil fuels combustion has been widely known of their emission containing various heavy metals and gaseous substances. This study is to investigate the distribution of mercury (Hg) in environmental media surrounding the lignite coal-fired power plant in Lampang province, Thailand. Samples of surface soil and waters were collected within the vicinity of the power plant in order to analyze mercury contamination. Also, Hazard Quotient (HQ) will be determined to estimate environmental potential risks in this area of concern. Mercury contents in surface soil samples were observed in the range of 65 - 1338 μg/kg. The results also revealed that the distribution of mercury contamination in surface soils partly correlate with monsoon domination or distance from the power plant. Some samples of surface water and ground water in this area contained mercury concentration in the range of 0.1 μg/l - 0.2 μg/l. These mercury contents were further considered for environmental potential risks by HQ calculation. The environmental potential risks of mercury content in surface soil samples and water samples were classified as no environmental hazard (HQ > 1).