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Subject: Biochemistry, Genetics and Molecular Biology

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Now showing 1 - 10 of 30
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    On-line dynamic fractionation and automatic determination of inorganic phosphorus in environmental solid substrates exploiting sequential injection microcolumn extraction and flow injection analysis
    (2006-06-16) Janya Buanuam; Manuel Miró; Elo Harald Hansen; Juwadee Shiowatana; Mahidol University; Universitat de les Illes Balears; Danmarks Tekniske Universitet
    Sequential injection microcolumn extraction (SI-MCE) based on the implementation of a soil-containing microcartridge as external reactor in a sequential injection network is, for the first time, proposed for dynamic fractionation of macronutrients... in environmental solids, as exemplified by the partitioning of inorganic phosphorus in agricultural soils. The on-line fractionation method capitalises on the accurate metering and sequential exposure of the various extractants to the solid sample by application
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    Dual-Purpose Photometric-Conductivity Detector for Simultaneous and Sequential Measurements in Flow Analysis
    (2020-05-13) Thitirat Mantim; Korbua Chaisiwamongkhol; Kanchana Uraisin; Peter C. Hauser; Prapin Wilairat; Duangjai Nacapricha; Universitat Basel; Mae Fah Luang University; Mahidol University; Srinakharinwirot University; Flow Innovation-Research for Science and Technology Laboratories (FIRST Labs.)
    the acrylic block. The two electrodes of the C4D are silver conducting ink painted on the PEEK inlet and outlet tubing of the Z-flow cell. The dual-purpose detector is coupled with a sequential injection analysis (SIA) system for simultaneous detection... of the absorbance of the orange dye and conductivity of the dissolved oral rehydration salt powder. The detector was also used for sequential measurements of creatinine and the conductivity of human urine samples. The creatinine analysis is based on colorimetric
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    Sequential injection system for analysis of degree brix, orthophosphate and ph in raw sugarcane juice applicable to sugar industry
    (2021-11-01) Phoonthawee Saetear; Nattinee Saechua; Kamonthip Sereenonchai; Mahidol University; Thammasat University
    This work presents, for the first time, a new sequential injection analysis (SIA) method to simultaneously analyze degree Brix, orthophosphate and pH in raw cane juice. These key parameters relate to price of harvested sugarcane and quality of cane...) sucrose) was based on manipulation of the schlieren effect at the interface between plugs of sample and water. Orthophosphate analysis was carried out based on the molybdenum blue method with significant reduction in consumption of the reagents
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    Ethnicity-specific associations between the promoter region G-308A polymorphism (rs1800629) of the TNF-α gene and the development of end-stage renal disease: An evidence-based meta-analysis and trial sequential analysis
    (2025-01-01) Anumas S.; Tansawet A.; Numthavaj P.; Pattharanitima P.; Pabalan N.; Jarjanazi H.; Mongkolrob R.; Tasanarong A.; Tharabenjasin P.; Anumas S.; Mahidol University
    ). Multiple comparisons were Bonferroni-corrected. Trial sequential analysis (TSA) was implemented to ascertain the reliability of results. Sensitivity analyses and publication bias tests were performed on significant results. There were no significant...Tumor necrosis factor-alpha (TNF-α), is partly attributed to pathogenesis of end-stage renal disease (ESRD). Inconsistency of reported associations between TNF-α G-308A polymorphism (rs1800629) and ESRD prompted a meta-analysis to obtain more
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    Development of a sequential injection-liquid microextraction procedure with GC-FID for analysis of short-chain fatty acids in palm oil mill effluent
    (2017-04-01) Thapanee Pruksatrakul; Pattamaporn Phoopraintra; Prapin Wilairat; Pimchai Chaiyen; Rattikan Chantiwas; Mahidol University
    the levels of short-chain fatty acids are requisite for sustaining biogas production. This work presents the development of a sequential injection-liquid microextraction (SI-LME) procedure with GC-FID analysis for determination of short-chain fatty acids. GC
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    Gonadal transcriptomes associated with sex phenotypes provide potential male and female candidate genes of sex determination or early differentiation in Crassostrea gigas, a sequential hermaphrodite mollusc
    (2021-12-01) Coralie Broquard; Suwansa ard Saowaros; Mélanie Lepoittevin; Lionel Degremont; Jean Baptiste Lamy; Benjamin Morga; Abigail Elizur; Anne Sophie Martinez; University of the Sunshine Coast; Université de Caen Normandie; IFREMER Institut Francais de Recherche pour l'Exploitation de la Mer; Mahidol University
    gigas is a sequential irregular hermaphrodite mollusc of economic, physiological and phylogenetic importance. Although some studies identified genes of its sex-determining/−differentiating pathway, this particular topic remains to be further deepened..., in particular with regard to the expression patterns. Indeed, these patterns need to cover the entire period of sex lability and have to be associated to future sex phenotypes, usually impossible to establish in this sequential hermaphrodite. This is why we
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    Effects of aspirin and non-aspirin nonsteroidal anti-inflammatory drugs on the incidence of recurrent colorectal adenomas: A systematic review with meta-analysis and trial sequential analysis of randomized clinical trials
    (2017-11-14) Sajesh K. Veettil; Kean Ghee Lim; Siew Mooi Ching; Surasak Saokaew; Pochamana Phisalprapa; Nathorn Chaiyakunapruk; International Medical University; Faculty of Medicine and Health Sciences; Universiti Putra Malaysia; University of Phayao; Monash University Malaysia; Naresuan University; Mahidol University; University of Wisconsin Madison
    of Recommendations, Assessment, Development and Evaluation) approach. Retrieved trials were evaluated using Cochrane risk of bias instrument. Meta-analytic estimates were calculated with random-effects model and random errors were evaluated with trial sequential... analysis (TSA). Results: In patients with a previous history of colorectal cancer or adenomas, low-dose aspirin (80-160 mg/day) compared to placebo taken for 2 to 4 years reduces the risk of recurrent colorectal adenomas (relative risk (RR), 0.80 [95% CI
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    Compensation of missing wedge effects with sequential statistical reconstruction in electron tomography
    (2014-10-01) Lassi Paavolainen; Erman Acar; Uygar Tuna; Sari Peltonen; Toshio Moriya; Pan Soonsawad; Varpu Marjomäki; R. Holland Cheng; Ulla Ruotsalainen; University of Jyvaskyla; Tampere University of Technology; University of California, Davis; Mahidol University
    of this study was to achieve isotropic resolution with a statistical reconstruction method, sequential maximum a posteriori expectation maximization (sMAP-EM), using no prior morphological knowledge about the specimen. The missing wedge effects on sMAP-EM were... significantly suppresses the effects of the missing information producing isotropic resolution. Furthermore, this method improves the contrast ratio, enhancing the applicability of further automatic and semi-automatic analysis. These improvements in ET
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    Combination chemotherapy and photodynamic therapy with Fab' fragment targeted HPMA copolymer conjugates in human ovarian carcinoma cells
    (2008-09-01) Jarunee Hongrapipat; Pavla Kopečková; Jihua Liu; Sompol Prakongpan; Jindřich Kopeček; University of Utah; Mahidol University
    The biological activities of sequential combinations of anticancer drugs, SOS thiophene (SOS) and mesochlorin e6 monoethylenediamine (Mce6), in the form of free drugs, nontargeted N-(2-hydroxypropyl)methacrylamide (HPMA) copolymer - drug conjugates... biorecognition by OVCAR-3 cells of Fab′-targeted HPMA copolymer conjugates over nontargeted conjugates. The median-effect analysis and the determination of the combination index (CI) were used to describe the drug interaction and quantify the synergism
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    Structural design and characterization of a channel-forming peptide
    (2004-07-31) Chartchai Krittanai; Sakol Panyim; Mahidol University
    , and sequential order was arranged to produce an amphipathic surface. The designed sequence was chemically synthesized using a solid-phase method and the polypeptide was purified by reverse-phase liquid chromatography. Molecular mass analysis by electro-spray.... An analysis of the conducting current at various applied potentials suggested that the peptide forms a cationic ion channel with an intrinsic conductance of 188 pS. These results demonstrate that a simple rational de novo design can be successfully employed