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Item Metadata only Comparison between drop plate and pour plate methods for enumeration of total bacteria in potable water(Mahidol University. Mahidol University Library and Knowledge Center, 1999) Noppasase Wansumrith; Naowarut Charoenca; Nipapun Kungskulniti; Krisana Teankaprasith; Sudhin YoosookItem Metadata only Bacterial quality assessment of tap water from the water supply plant to consumer, Chachoengsao province(Mahidol University. Mahidol University Library and Knowledge Center, 2009) Chulaluk Totsatian; Pipat LuksamijarulkulItem Metadata only Quality of sources of drinking water and health among the hill tribe people of northern Thailand(2022-03-01) Sudsandee S.; Fakkaew K.; Siriratruengsuk W.; Worakhunpiset S.; Apidechkul T.; Mahidol Universitypeople in Thailand. This study aimed to assess the quality of different sources of natural drinking water from the hill tribe villages in northern Thailand. Seventy-two drinking water samples from the hill tribe villages were collected and tested... for biological, chemical and physical qualities, which were compared with the standard parameter values for safe drinking water according to the World Health Organization. Total coliform bacteria and fecal coliform bacteria, which represented the biologicalPublication Metadata only Critical factors on chemical properties and heavy metals in water for livestock farms in Thailand(2013-01-01) Teeraporn Makaroon; Suwicha Kasemsuwan; Nattavut Ratanavanichrojn; Hathairad Hananantachai; Rachaneekorn Mingkhwan; Sutha Khaodhiar; Phitsanu Tulayakul; Faculty of Veterinary Medicine; Kasetsart University; Mahidol University; Chulalongkorn UniversityThis study aimed to investigate chemical quality of animal drinking used in livestock farms in Thailand. Samples and information from 68 pig farms, 35 chicken farms and 9 duckling farms were collected during March to August 2011. Water quality data... detected in surfacewater with median values of 0.183 and 0.506 ppm, respectively, and are both higher than standard limits for drinking water. Median pH value in groundwater was 6.85, which was significantly (p < 0.05) lower than pH value (7Item Metadata only Multiresidue analysis of banned substances in livestock drinking water by high-performance liquid chromatography-mass spectrometry(Mahidol University. Mahidol University Library and Knowledge Center, 2013) Chusak Ardsoongnearn; Leena Suntornsuk; Nongluck Ruangwisesof quantitation (LOQ) for each compound was in a range of 0.002 - 0.06 μg/L and 0.005 - 0.25 μg/L, respectively. The validated method was applied to simultaneous determination of eight antimicrobial drugs in 40 animal drinking water samples collected from standard... in animal feed and drinking water. This work focused on development of liquid chromatography coupled to an ion trap mass spectrometer (LC-MS ion trap) for the simultaneous separation of these drugs in animal drinking water. The HPLC analysis was performedPublication Metadata only Detection of enterotoxigenic Escherichia coli in water by filter hybridization with three enterotoxin gene probes(1982-12-01) P. Echeverria; J. Seriwatana; O. Chityothin; W. Chaicumpa; C. Tirapat; Mahidol UniversityThe DNA hybridization assay for genes encoding for Escherichia coli enterotoxins was used to examine water specimens in Thailand. In a reconstruction experiment, the DNA hybridization assay was 104times more sensitive than testing random E. coli... in the Y-1 adrenal and suckling mouse assays in identifying enterotoxigenic E. coli (ETEC) in water. Drinking and bathing water collected from 2 of 10 different homes of individuals with ETEC-associated diarrhea and 6% (5 of 78) and 11% (11 of 78Publication Metadata only Treatment efficiency and filtration rate of a horizontal sand filtration system.(1990-01-01) U. Kompayak; T. Dejthai; Mahidol Universityof treatment efficiency of both models were very satisfactory. The physical and chemical quality of the filtered water was within the standards for drinking water except for bacteria quality. The rates of filtration of Model 1 were slightly faster than those... of Model 2 for both one and two meters of water level in the raw water column. The rates for both models were higher than the lower limit standards of the slow sand filtration system throughout the study.Publication Metadata only Hydrogeogenic fluoride in groundwater and dental fluorosis in Thai agrarian communities: a prevalence survey and case–control study(2021-12-01) Chanapong Rojanaworarit; Luz Claudio; Nopporn Howteerakul; Auamduan Siramahamongkol; Pattraravith Ngernthong; Pornpimol Kongtip; Susan Woskie; University of Massachusetts Lowell; Hofstra University; Icahn School of Medicine at Mount Sinai; Mahidol University; Nakhon Pathom Provincial Public Health OfficeBackground: Dental fluorosis can be a disease of social inequity in access to safe drinking water. This dental public health issue becomes prominent in socially disadvantaged agrarian communities in fluoride endemic areas where the standard... irrigation system is unavailable and groundwater containing natural fluoride is the major drinking water source. This study aimed to determine the prevalence and severity of dental fluorosis in children and to evaluate its association with fluoridePublication Open Access Fluoride analysis of human milk in remote areas of Thailand(2000-09) Somsak Chuckpaiwong; สมศักดิ์ จักรไพวงศ์; Siriruk Nakornchai; ศิริรักษ์ นครชัย; Rudee Surarit; ฤดี สุราฤทธิ์; Surin Soo-ampon; สุรินทร์ สูอำพัน; Mahidol University. Faculty of Dentistry. Department of Hospital Dentistry; Mahidol University. Faculty of Dentistry. Department of Pediatric Dentistry; Mahidol University. Faculty of Dentistry. Department of Physiology and BiochemistryThe objective of this study was to measure the fluoride content in human milk collected from mothers living in remote areas of Thailand and to correlate it with fluoride concentrations in drinking water and water for domestic use. Four to five ml... in breast milk fluoride concentration between regions (p=0.6). No correlation was found between breast milk fluoride content and fluoride concentrations in either drinking water or water for domestic use (r(tau) = -0.09, p = 0.32, r(tau) = -0.04, p = 0Publication Metadata only Arsenic exposure levels of petrochemical workers in three workplace settings in Rayong Province, Thailand(2017-10-03) Laksanee Boonkhao; Wantanee Phanprasit; Mark Gregory Robson; Dusit Sujirarat; Suphaphat Kwonpongsagoon; Chaiyanun Tangtong; Mahidol University; Rutgers, The State University of New Jerseyconsecutive days, and drinking water were collected from each participant. Urine was collected at the end of the day after the last food sample was collected from each subject. Urine samples where arsenic concentration exceeded 100 mg/L were further analyzed... were well below their standards. The urinary arsenic correlated well with arsenic in the food but not in the air and water. Conclusion: Occupational exposure to arsenic among operators and office workers was lower than 1% TLV (Threshold limit value