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Item Metadata only Impact of functionalized and structurally tuned cellulosic composite membranes on removal of metal ions, dye, drug, and proteins(2024-07-05) Karim Z.; Khan M.J.; Husain A.; Ahmed F.; Khan Z.H.; Karim Z.; Mahidol University(133.4 ± 2.1 μmole/g). To test our hypothesis further, functionalized composite membrane was structurally tuned by surface coating route, cellulose nanocrystals (CNC) were coated on oxidized composite membranes, indeed, the coated composite membranes... was denser with decrease average pore-size to 0.52μm, furthermore, two-layered (1–1.5 μm coated and a base layer) structure could be easily seen by SEM analysis. Likewise, all fabricated composite membranes were tested for the removal of metal ions (Cr3Item Metadata only Dye adsorption selectivity in pristine and aluminum-doped MCM-41 mesoporous silica: A density functional theory investigation(2025-09-01) Singhanatkaisi N.; Sirihengcharoen T.; Janyodha T.; Polnarai P.; Linthong K.; Tantirungrotechai J.; Tantirungrotechai Y.; Singhanatkaisi N.; Mahidol UniversityThe adsorption behaviors of cationic (methylene blue), neutral (neutral red), and anionic (methyl orange) dyes on pristine MCM-41 and aluminum-doped MCM-41 (Al-MCM-41) mesoporous silica represented as surface slab cluster model were investigated... using ONIOM2(revPBE-D4/def2-SVP:GFN-FF) geometry optimizations and CPCM-revPBE-D4/def2-TZVP energy calculations. This study aims to elucidate molecular-level interactions and the impact of aluminum doping on dye adsorption selectivity. Methyl orangeItem Metadata only Zeolitic imidazolate framework-67 in chitosan-grafted hydrogel as an effective catalyst for peroxymonosulfate activation to degrade antibiotics and dyes(2024-11-08) Nachaichot A.; Phonlakan K.; Nijpanich S.; Pornsuwan S.; Budsombat S.; Nachaichot A.; Mahidol Universityin the degradation process. The antibacterial test against E. coli showed that the products of the TC degradation were nontoxic. Additionally, the composite hydrogel was evaluated in the presence of anions and in real water samples. The reusability study showed..., and methylene blue dyes within 30 min.Publication Metadata only Non-radioactive labelling of calcium oxalate crystals for investigations of crystal-cell interactions and internalization(2010-10-01) Sakdithep Chaiyarit; Siriwan Mungdee; Visith Thongboonkerd; Mahidol Universityquantified by flow cytometry. From 12 ionic dyes tested, CaOx monohydrate (COM) crystals were stainable only with CBB-R250 (blue) and Ponceau-S (red), whereas CaOx dihydrate (COD) crystals were stainable only with CBB-R250 (blue) and CBB-G250 (blue), which... non-radioactive techniques for efficiently labelling and imaging CaOx crystals in the study of crystal-cell interactions and internalization. A total of 12 ionic dyes, as well as AlexaFluor-488, FITC-conjugated IgG and Cy3-conjugated IgG were usedItem Metadata only One-step colorimetric isothermal detection of COVID-19 with AI-assisted automated result analysis: A platform model for future emerging point-of-care RNA/DNA disease diagnosis(2022-11-01) Jaroenram W.; Chatnuntawech I.; Kampeera J.; Pengpanich S.; Leaungwutiwong P.; Tondee B.; Sirithammajak S.; Suvannakad R.; Khumwan P.; Dangtip S.; Arunrut N.; Bantuchai S.; Nguitragool W.; Wongwaroran S.; Khanchaitit P.; Sattabongkot J.; Teerapittayanon S.; Kiatpathomchai W.; Mahidol Universitygreen (LG) dye for distinctive colorimetric readouts, which enhance the test accuracy when performed and analyzed simultaneously. Our RT-LAMP assay has a detection limit of 50 viral copies/reaction with the cycle threshold (Ct) value ≤ 39.7 ± 0...H-sensitive dyes that limit downstream assay optimization or hinder efficient result interpretation. To address this problem, we developed a novel dual colorimetric RT-LAMP assay using in-house pH-dependent indicators to maximize the visual detection and assayItem Metadata only Parameters Governing Void Formation and Expansion of Hollow Natural Rubber Latex Particles for Their Use as Bio-based Nanocapsules(2024-01-01) Promlok D.; Suteewong T.; Polpanich D.; Tangboriboonrat P.; Promlok D.; Mahidol Universityof HL-NRPs as nanocapsules is explored by encapsulating fluorescent dyes, i.e., hydrophilic fluorescein isothiocyanate (FITC) and lipophilic Nile red (NiR), as model cargo. From the dye release test after 24 h, the cumulative concentrations of FITCItem Metadata only Measurement of sucrose concentration using Imbibition length on paper: A device for equipment-free and environmentally-friendly detection(2024-04-01) Sitanurak J.; Kumpong A.; Yaimai O.; Wilairat P.; Teerasong S.; Sitanurak J.; Mahidol Universityrefractometry, were in statistical agreement via the paired t-test at the 95 % confidence level. This method is simple, instrument-free, requiring only a small amount of safe red food dye, and can be conducted on-site....-shaped hydrophobic boundary. A sample (38 μL) was dispensed onto the bulb area, and the solution's flow was visually tracked using a red dye added to the sample. The imbibition length (L) was measured by a vernier caliper at 10.0 min after the samplePublication Metadata only Rapid and sensitive lateral flow immunoassay for influenza antigen using fluorescently-doped silica nanoparticles(2014-01-01) Suwussa Bamrungsap; Chayachon Apiwat; Warangkana Chantima; Tararaj Dharakul; Natpapas Wiriyachaiporn; Thailand National Science and Technology Development Agency; Mahidol UniversityWe report on a lateral flow immunoassay (LFIA) for influenza A antigen using fluorescently-doped silica nanoparticles as reporters. The method is taking advantage of the high brightness and photostability of silica nanoparticles (doped with the dye... in infected allantoic fluid demonstrated the functionality of the method. By comparison with a commercial influenza A test based on gold nanoparticles as reporters, the system provides an 8-fold better sensitivity. [Figure not available: see fulltext.] © 2013Publication Metadata only Development of organic-inorganic hybrid optical gas sensors for the non-invasive monitoring of pathogenic bacteria(2018-10-01) Sumana Kladsomboon; Chadinee Thippakorn; Thara Seesaard; Kanchanaburi Rajabhat University; Mahidol Universityof organic and inorganic dyes, namely zinc-porphyrin, manganese-porphyrin, and zinc-phthalocyanine, were used as gas sensing materials to fabricate a thin-film coating on glass substrates. The performance of the gas sensor was enhanced by a thermal treatment... process. The optical absorption spectra and morphological structure of the sensing films were confirmed by UV-Vis spectrophotometer and atomic force microscope, respectively. The optical gas sensors were tested with various volatile compoundsItem Metadata only Cost-effective PMMA photocatalytic microreactor for nanocatalyst screening and environmental research(2025-08-01) Tuntithavornwat S.; Saengpitak K.; Phitaksidchareon P.; Sdayuruch T.; Hunsom M.; Tuntithavornwat S.; Mahidol University. The microreactor retained >95 % of initial performance over five reuse cycles, confirming coating stability. Continuous-flow tests demonstrated multifunctionality: ∼75 % Ag⁺ removal and >80 % Escherichia coli inactivation within 15 min. Surface modification... with cetyl-trimethyl-ammonium bromide (CTAB) reduced water contact angle from 78° to 26°, boosting TiO2 photocatalytic efficiency (k = 3.30 × 10⁻² min⁻¹) and enhancing antibacterial performance. ZnO outperformed TiO2 in both dye