نتایج جستجو برای: pathogenic indicator

تعداد نتایج: 140860  

Journal: :Bioresource technology 2008
Leena Sahlström Elisabeth Bagge Eva Emmoth Annika Holmqvist Marie-Louise Danielsson-Tham Ann Albihn

The aim of the study was to assess the effect of pasteurisation, as set by the European regulation EC 1774/2002, on selected pathogens and indicator organisms. Unpasteurised substrate (biowaste), including animal by-products from a full-scale biogas plant was heat treated under laboratory conditions at 70 degrees C and 55 degrees C for 30 min and 60 min. Heat treatment at 55 degrees C for 60 mi...

Journal: :Mycobiology 2015
Ze-Ping Luo Hai-Yan Lin Wen-Bing Ding Hua-Liang He You-Zhi Li

Sixty-one endophytic fungus strains with different colony morphologies were isolated from the leaves, stems and roots of Tephrosia purpurea with colonization rates of 66.95%, 37.50%, and 26.92%, respectively. Based on internal transcribed spacer sequence analysis, 61 isolates were classified into 16 genera belonging to 3 classes under the phylum Ascomycota. Of the 61 isolates, 6 (9.84%) exhibit...

2002
Juhee Kim

Studies of the occurrence and survival of sewage-origin bacteria in coastal waters and sediments continued this year at the marine microbiology laboratory at California State University at Long Beach. The goal of these studies has been to determine what relationships, if any, exist between the routinely sampled indicator bacteria (e.g., coliforms, fecal streptococci) and pathogenic bacteria (e....

Journal: :Bioresource technology 2006
Caroline Côté Daniel I Massé Sylvain Quessy

The objective of this study was to evaluate the efficiency of a low temperature anaerobic treatment to reduce viable populations of indicator microorganisms (total coliforms, Escherichia coli) and the presence of selected pathogens (Salmonella, Yersinia enterocolitica, Cryptosporidium and Giardia) in swine slurries from different sources. Experiments were carried out in 40 l Sequencing Batch Re...

Jalal Bahmeei , Kamyar Yaghmaeian , Mehdi Mokhtari ,

Introduction: Health-care waste can threaten the health of humans and environment due to dangerous, toxic and pathogenic agents. This study was conducted to investigate the status of disinfection equipment in Tehran hospitals as well as their health and economic evaluation in 2016. Materials and Methods: In this research, 27 hospitals in Tehran that equipped with disinfection equipment were se...

Background and Objectives: Lactic acid bacteria are usually involved in the preparation of fermented foods and can produce different metabolites according to their strain type. The aim of this study was to evaluate the antimicrobial, antioxidant and aggregation activities of 10 different strains of Lactobacillus plantarum isolated from native fermented foods including Koozeh cheese, fermented o...

Journal: :Archives of disease in childhood 2003
T Stricker F Navratil F H Sennhauser

This retrospective study evaluated the clinical features and findings in bacterial cultures and in microscopic examination of vaginal secretions in 80 prepubertal girls, aged 2-12 years, with vulvovaginitis. Vaginal secretions were obtained directly from the vagina with a sterile catheter carefully inserted into the vagina. Pathogenic bacteria were isolated in 36% of cases. In 59% of these case...

Journal: :Applied and environmental microbiology 2007
Lester W Sinton Robin R Braithwaite Carollyn H Hall Margaret L Mackenzie

The survival of enteric bacteria was measured in bovine feces on pasture. In each season, 11 cow pats were prepared from a mixture of fresh dairy cattle feces and sampled for up to 150 days. Four pats were analyzed for Escherichia coli, fecal streptococci, and enterococci, and four inoculated pats were analyzed for Campylobacter jejuni and Salmonella enterica. Two pats were placed on drainage c...

Journal: :Environmental monitoring and assessment 2009
G S Nagvenkar N Ramaiah

Studies on abundance and types of various pollution indicator bacterial populations from tropical estuaries are rare. This study was aimed to estimate current levels of pollution indicator as well as many groups of human pathogenic bacteria and their seasonal variations in different locations in Mandovi and Zuari Rivers in the central west coast of India. The sampling covered the estuarine and ...

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