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51.
Radhouani H Igrejas G Pinto L Gonçalves A Coelho C Rodrigues J Poeta P 《Journal of environmental monitoring : JEM》2011,13(8):2227-2233
Antimicrobial resistance and the mechanisms implicated were studied in 54 enterococci recovered from 57 seagull fecal samples. Almost 78% of the recovered enterococci showed resistance against one or more antibiotics and these isolates were identified to the species level. E. faecium was the most prevalent species (52.4%). High percentages of erythromycin and tetracycline resistances were found among our isolates (95.2%), and lower percentages were identified to other antibiotics. Most of the tetracycline-resistant strains carried the tet(M) and/or tet(L) genes. Genes associated with Tn916/Tn1545 and/or Tn5397 transposons were detected in 45% of tetracycline-resistant isolates. The erm(B) gene was detected in 65% of erythromycin-resistant isolates. The vat(D) and vat(E) genes were present in 5.9% and 11.8% of quinupristin/dalfopristin-resistant isolates, respectively. The ant(6)-Ia gene was identified in 57.1% of streptomycin-resistant isolates. All nine kanamycin-resistant isolates carried the aph(3)'-IIIa gene. The cat(A) gene was found in two chloramphenicol-resistant isolates. Seagulls should be considered a risk species for spreading in the environment antimicrobial resistant enterococci and can serve as a sentinel for antibiotic pressure from the surrounding farm and urban setting. 相似文献
52.
Costa João Paulo R. Gomes Guilherme J. C. Fernandes Gilberto Magarinos Dario M. Fonseca Alberto Pires Patrício J. M. 《Journal of Material Cycles and Waste Management》2023,25(1):128-143
Journal of Material Cycles and Waste Management - Mining sites are vulnerable to erosion and siltation of rivers. While the construction of rockfill dikes can mitigate siltation, existing rockfill... 相似文献
53.
Theerthagiri Jayaraman Park Juhyeon Das Himadri Tanaya Rahamathulla Nihila Cardoso Eduardo S. F. Murthy Arun Prasad Maia Gilberto Vo Dai‑Viet N. Choi Myong Yong 《Environmental Chemistry Letters》2022,20(5):2929-2949
Environmental Chemistry Letters - The electrocatalytic reduction of nitrate waste into ammonia allows both the removal of nitrate contaminants and an alternative production of ammonia compared to... 相似文献