نتایج جستجو برای: waters contamination

تعداد نتایج: 91407  

احمدی جلالی مقدم, معصومه, اسفرم مشگین شهر, سجاد , سلطانی تهرانی, بهرام, نوجوان, مجید, هنرمند, حمید رضا ,

Background and purpose: Nosocomial outbreaks of legionnaires’ diseases are usually related to contamination of water sources. This survey investigated the frequency of mip gene in cold and warm water taps and water containers of infant incubators containing legionella pneumophila in hospitals of Guilan province, Iran. Materials and methods: This cross-sectional study used 140 samples. They wer...

2009
S. Chałupnik M. Wysocka

Saline waters from underground coal mines in Poland often contain natural radioactive isotopes, mainly 226Ra from the uranium decay series and 228Ra from the thorium series. More than 70% of the total amount of radium remains underground as radioactive deposits due to spontaneous co-precipitation or water treatment technologies, but several tens of MBq of 226Ra and even higher activity of 228Ra...

Journal: :Marine science and technology bulletin 2022

Microplastics are one of the major pollution problems nowadays, have been found in both marine environments and various fish species worldwide. In this study, presence microplastics digestive systems gills 6 from Scombridae family on coast Karachi Pakistan was investigated. A total 336 were examined for microplastic systems. detected 11.11%-19.51% 58.62%-85.71% individuals, respectively. The nu...

Journal: :International Journal of Environmental Research and Public Health 2014

Journal: :Ecological Indicators 2021

Contamination derived from maritime transportation is not only linked to petroleum-based substances but also of other such as hazardous and noxious nature (HNS). Over the last decade, trade HNS has been augmenting. However, levels in aquatic environment are still quite unknown. So, an integrative study, combining a chemical multi-biomarker evaluation, was done NW Atlantic Iberian coast where sp...

Journal: :Applied and environmental microbiology 2000
A E Bernhard K G Field

Our purpose was to develop a rapid, inexpensive method of diagnosing the source of fecal pollution in water. In previous research, we identified Bacteroides-Prevotella ribosomal DNA (rDNA) PCR markers based on analysis. These markers length heterogeneity PCR and terminal restriction fragment length polymorphism distinguish cow from human feces. Here, we recovered 16S rDNA clones from natural wa...

2009
Peter Lin Sun William E. Hawkins Robin M. Overstreet Nancy J. Brown-Peterson

Tilapia (Oreochromis spp.) were collected seasonally from four contaminated rivers in southwestern Taiwan for studies of morphological deformities that could be used as biomarkers of contamination. Morphological deformities found in tilapia were separated into 15 categories. Overall, the prevalence of deformities such as split fins, lower lip extension and gill deformities were significantly re...

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