نتایج جستجو برای: swimming pools
تعداد نتایج: 32440 فیلتر نتایج به سال:
Abstract Background and Objective: Swimming pools, which are recreational places, can cause transmission of bacterial diseases, fungal and parasitic infections due to direct contact with various groups of people. We aimed to determine and compare the common microbial indicators in the water of pools and Jacuzzis in Golestan province. Material and Methods: the samples were obtained...
OBJECTIVES To measure the levels of exposure to nitrogen trichloride (NCl3) in the atmosphere of indoor swimming pools and to examine how they relate to irritant and chronic respiratory symptoms, indices of pulmonary function, and bronchial hyperresponsiveness to methacholine in lifeguards working in the pools. METHOD 334 lifeguards (256 men; 78 women) recruited from 46 public swimming pools ...
The goal was to evaluate the associations between testicular hormones at adolescence and the exposure to chlorination by-products when attending chlorinated swimming pools. We obtained serum samples from 361 school male adolescents (aged 14-18years) who had visited swimming pools disinfected with chlorine or by copper-silver ionization. We analysed serum concentrations of inhibin B (two differe...
*Corresponding author: Mailing address: Division of Epidemiology, Chiba Prefectural Institute of Public Health, 662-2 Nitonacho, Chuo-ku, Chiba 260-8715, Japan. Tel: +81-43-266-7996, Fax: +81-43-265-5544, E-mail: [email protected] Cryptosporidiosis is a diarrheal disease initiated by ingestion of Cryptosporidium oocysts. The incubation period is 2 -10 days, and the chief symptom is water...
Concentrations of ammonia and the chlorine stabilizer, cyanuric acid, which could be expected in swimming pools decreased the rate of kill by chlorine of the potential pathogen, Pseudomonas aeruginosa. The effect of cyanuric acid increased as the concentration of chlorine decreased, a fact of significance from a public health view. Quaternary ammonium algcides had little effect on the kill rate...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید