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Browsing by Author "Nawas, Tarek"

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Browsing by Author "Nawas, Tarek"

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  • Bacterial contamination of urban water wells in the Nuwayri region of Beirut - Lebanon 
    Nawas, Tarek; Al Koussa, Houssam (2018-12-12)
    Nine water wells serving nine different building residents in the Bourj Abi Haydar- Nuwayri region in Beirut (Lebanon) were tested for contamination with Gram negative bacteria by standard methods. The samples were obtained ...
  • Contamination the shells of Lebanese free range chicken eggs with potential pathogens 
    Nawas, Tarek; Maamari, Julian (2018-11-30)
    Local free-range eggs in Lebanon are favored by consumers, but are often sold without prior cleaning or processing. Eggs were proved to be a major source of many enteric pathogens that can cause varying episodes of ...
  • Elevator buttons 
    Nawas, Tarek; Kassir, Ranim (2018-12-11)
    The isolation of many potential pathogens from many sources commonly used by the public, raised awareness on needed measures to avoid such a hidden danger. In this study another commonly used surface, namely the elevator ...
  • Extraction and purification of pyocyanin 
    Nawas, Tarek; Abou Raji El Feghali, Patrick (2019-02-20)
    Pyocyanin, the growth pigment produced by Pseudomonas aeruginosa, thought at one time to be a metabolic byproduct, was found to be important for the wellbeing of the organism and one of the important chemicals that allow ...
  • Inhibition of gram negative bacterial growth and biofilm formation by alpha thujone 
    Nawas, Tarek; Mitri, Sara; Jaafar, Mohamad (2018-12-11)
    The increasing resistance of microorganism to antibiotics in the last decades, drove microbiologists, botanists, and natural-products chemists to search for phytochemicals that could be used for treatment of infectious ...
  • Isolation of potentially pathogenic bacteria from public service cars door handles 
    Nawas, Tarek; Saif, Amir; Iskandar, Sleiman (2019-02-20)
    The possible bacterial contamination of the door handles of public “service” cars working within the city of Beirut, the capital of Lebanon, was investigated. Door handles from 22 cars were sampled and cultured on multiple ...
  • Malva neglecta 
    Nawas, Tarek; Jaafar, Mohammad; Abou Raji El Feghali, Patrick; Keyrouz, Elias (2018-11-30)
    Malva neglecta, a wild plant that grows in different parts of Lebanon, was noted by residents to have soothing effects if taken during episodes of respiratory tract infections. This study was designed to test for the ability ...
  • Pyocyanin 
    Nawas, Tarek; Abou Raji El Feghali, Patrick (2019-02-20)
    Pyocyanin, a pigment naturally produced by most Pseudomonas aeruginosa strains and noted to have a role in the wellbeing of the organism and its pathogenicity, was studied for its role as an inhibitor of bacterial growth ...
  • Vending machine buttons and touch screens 
    Nawas, Tarek; Dakroub, Rozan (2018-12-11)
    As potentially pathogenic organisms were previously isolated from different inanimate objects, it was decided to investigate, in this study, the extent of contamination of the press buttons or touch screens of public vending ...
  • التسجيل المباشر عبر الانترنت 
    Nawas, Tarek (2019-02-20)