Results 31 to 40 of about 11,845 (144)

Plasmidic qnrA3 enhances Escherichia coli fitness in absence of antibiotic exposure. [PDF]

open access: yesPLoS ONE, 2011
The widespread presence of plasmid-mediated quinolone resistance determinants, particularly qnr genes, has become a current issue. By protecting DNA-gyrase from quinolones, Qnr proteins confer a low level quinolone resistance that is not sufficient to ...
Adrien Michon   +5 more
doaj   +1 more source

Modularity functions maximization with nonnegative relaxation facilitates community detection in networks

open access: yes, 2011
We show here that the problem of maximizing a family of quantitative functions, encompassing both the modularity (Q-measure) and modularity density (D-measure), for community detection can be uniformly understood as a combinatoric optimization involving ...
Barabási   +18 more
core   +1 more source

A Haldane-Shastry spin chain of BC_N type in a constant magnetic field [PDF]

open access: yes, 2004
We compute the spectrum of the trigonometric Sutherland spin model of BC_N type in the presence of a constant magnetic field. Using Polychronakos's freezing trick, we derive an exact formula for the partition function of its associated Haldane-Shastry ...
Enciso, A.   +3 more
core   +3 more sources

Pathogenicity and Antimicrobial‐Resistance Profiles of Escherichia coli Isolated From Faeces of Tibetan Pigs Reared Under Intensive Conditions

open access: yesVeterinary Medicine and Science, Volume 12, Issue 3, May 2026.
Tibetan pig farms host diverse Escherichia coli strains that resist multiple antibiotics and carry important disease genes, such as astA. These traits jump easily between bacterial groups, marking intensive pig production as a key reservoir and signalling the need for integrated animal–human surveillance and more careful antibiotic use.
Runbo Luo   +7 more
wiley   +1 more source

A qnr-plasmid allows aminoglycosides to induce SOS in Escherichia coli

open access: yeseLife, 2022
The plasmid-mediated quinolone resistance (PMQR) genes have been shown to promote high-level bacterial resistance to fluoroquinolone antibiotics, potentially leading to clinical treatment failures.
Anamaria Babosan   +13 more
doaj   +1 more source

Antimicrobial‐Resistance Genetic Markers Among Multidrug‐Resistant Enterobacteriaceae and Acinetobacter spp. From Vegetable Market Chains in Ethiopia

open access: yesFood Science &Nutrition, Volume 14, Issue 4, April 2026.
Schematic overview of the study workflow explaining isolation of lactose‐fermenting Gram‐negative bacteria from farms and supermarkets, antimicrobial susceptibility testing, detection of resistance genes by PCR, and ERIC‐PCR to evaluate genetic diversity and relatedness among isolates.
Hemen Tesfaye   +9 more
wiley   +1 more source

Establishment of multiplex PCR for detection of genes related to Quinolone resistance

open access: yesVietnam Journal of Science, Technology and Engineering, 2018
Background/aims: It has been shown that quinolone resistance arises due to mutations in the quinolone resistance-determining regions of the drug targets.
Ngo Tat Trung   +4 more
doaj   +1 more source

Mechanisms of quinolone resistance and implications for human and animal health [PDF]

open access: yesVeterinarski Glasnik, 2010
Quinolone antibiotics have been widely used in human and veterinary medicine. This has caused the development of resistance and difficulties in the treatment of complicated bacterial infections in humans.
Velhner Maja   +5 more
doaj   +1 more source

On certain statistical properties of continued fractions with even and with odd partial quotients [PDF]

open access: yes, 2012
We prove results concerning the joint limiting distribution of the renewal time of denominators and consecutive digits of random irrational numbers in the case of continued fractions with even partial quotients, with odd partial quotients, and for Nakada'
Boca, Florin P., Vandehey, Joseph
core  

Antimicrobial Effect of Spices and Their Phytochemicals: A Novel Approach to Overcoming Antibiotic Resistance

open access: yesMedComm, Volume 7, Issue 4, April 2026.
This graphical abstract shows the antibacterial potential of phytochemicals from 15 spices, showcasing key compounds, their extraction methods, and mechanisms of action. It highlights membrane disruption, ROS generation, enzyme inhibition, and biofilm prevention as core antibacterial pathways.
Hettiyahandi Binodh De Silva   +3 more
wiley   +1 more source

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