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Результаты 281-290 из 306
Nonpoint source pollution from agricultural watersheds on coastal plain soils
1981
Ritter, William F.
Local government options for controlling nonpoint source pollution
1981
Weinberg, Anne C. | Arts, Jim | Mann, Laurie
Virological and seroepidemiological surveys of type Hsw1N1 influenza on a piggery
1981
Nakamura, K. (Nagano-ken. Research Inst. for Health and Pollution (Japan)) | Nishizawa, S.
Ecological studies of Salmonella, 2: Incidence of Salmonella in local city sewage and its relation between isolates from humans
1981
Muramatsu, K. (Nagano-ken. Research Inst. for Health and Pollution (Japan))
A survey of the incidence of Salmonella in samples collected from three treatment plants of sewage, food-poisoning, sporadic case with acute enteritis and healthy carrier in a local city, was performed from Aprile 1974 to December 1978. Salmonella were very frequently found in Influent sewage. The range of sewage source serovars found was wide and most aerovara were related with human source. A total of 954 strains and 62 serovars of Salmonella were found in sewage and human source. S. typhimurium, S.tennessee, S.thompson, S.infantis, S. senftenberg and S.oranienberg were the most frequent aerovars. It might be presumed that the environmental contamination of the area by the organisms is increasing gradually, since new aerovars of Salmonella, for example S.havana, S.agona, S.london, S. mission and S.cerro etc., which were never found in Nagano prefecture before, were isolated in the area. Effect of addition of the Aluminum sulfate and Polyacrylamide for Salmonella isolation from sewage, were studied. By use of the floe method. Salmonella were more frequently isolated from influent sewage.
Показать больше [+] Меньше [-]The analytical method for chlorophyll degradation products in sediment and an investigation of Lake Suwa [Nagano, Japan]
1981
Seki, H. (Nagano-ken. Research Inst. for Health and Pollution (Japan)) | Akaoka, T. | Kono, Y. | Ogihara, K.
X-ray fluorescence analysis of arsenic in river water by means of coprecipitation with zirconium hydroxide
1981
Katsuno, T. (Nagano-ken. Research Inst. for Health and Pollution (Japan))
The lipid contents in deep-sea fishes on the market in Nagano prefecture [Japan]: The decrease of lipid contents by cooking
1981
Hayashi, H. (Nagano-ken. Research Inst. for Health and Pollution (Japan)) | Maezawa, H. | Kawamata, S.
A simple analytical method for chlorobenzenes in organic matter
1981
Tsukioka, T. (Nagano-ken. Research Inst. for Health and Pollution (Japan)) | Shimizu, S.
Estimation of vehicles in food poisoning by statistical methods
1981
Wada, M. (Nagano-ken. Research Inst. for Health and Pollution (Japan)) | Katsuno, T. | Muramatsu, K.
Ginseng radix rubra manufacturing process of Panax ginseng [Panax pseudoginseng] C.A. Meyer
1981
Kubota, M. (Nagano-ken. Research Inst. for Health and Pollution (Japan))
