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Item Metadata only Comparison of indirect fluorescence antibody and the sabin-feldman dye test for detection of Toxoplasma gondii antibody in pregnant Thai women(Mahidol University. Mahidol University Library and Knowledge Center, 2004) Uraiwan Krainara; Yaowalark SukthanaItem Open Access Seroprevalence of toxoplasma gondii using sabin feldman dye test in children and young adults in Bangphae district, Ratchaburi province, Thailand(Mahidol University. Mahidol University Library and Knowledge Center, 2022) Sugai, Misaki, 1978-; Kriengsak Limkittikul; Salin Sirinam; Weerawan Hattasingh; Aongart Mahittikron, gender, and living subdistricts. T. gondii IgG was tested using the Sabin-Feldman dye test. The seroprevalence of T. gondii was 2.8% and 4.2% in 2012 and 2015, respectively. In 2015, the highest seropositivity of 18/285 (6.3%) was found in ages 14-23Item Metadata only Simplified aquatic toxicity test based on fluorescein diacetate method using esterase activities of the bacteria Bacillus Cereus(Mahidol University. Mahidol University Library and Knowledge Center, 2009) Apinan Suangoon; Patana Thavipoke; Chulaporn Kamnerdpetch; Duangrat Inthornpoints. The optimum conditions for a toxicity test using a Fluorescein Diacetate (FDA) for assessing toxicity of chemicals, as well as the toxicity of four chemical groups were examined, including : 1) heavy metals cadmium and copper, 2) organic dye, 2... groups, were also performed. The results showed that the suitable incubation time and viable cell count for toxicity testing with the FDA method were 2 hours 30 minutes and 3.5-4.5x107 CFUs/ ml, respectively. Results from toxicity testing of both freshItem Metadata only Study of the physics and chemistry of liquid crystal displays(Mahidol University. Mahidol University Library and Knowledge Center, 1988) Sukrit Tantrawong; Paisal Chingduang; Sauvarop Bualek; Orapin Phaovibulplates seperated by two 10 micrometers spacers. The cell was then filled with mixed liquid crystals containing a dichroic dye. Either a parallel or a 90 degrees twisted cell was obtained, depending on the rubbing direction of the treated surface... of the glass plate. Physical tests were made to obtain the response time, stability and contrast of color with and without an electric field (on and off state). Appropriate conditions were first found, e.g., strength and frequency of applied electric field