Results 51 to 60 of about 24,517 (227)

Plasmid-instability in acrA Mutants of Escherichia coli K12 [PDF]

open access: yesJournal of General Microbiology, 1974
SUMMARY: The effect of a mutation at acrA, which alters the bacterial membrane, on plasmid stability was studied. F-gal + residing in the mutant was remarkably unstable in the presence of acridine dyes or at high temperature (42°C) as compared with wild-type (acrA +) strains.
openaire   +2 more sources

Acriflavine-binding Capacity Controlled by the acrA Gene of Escherichia coli [PDF]

open access: yesMicrobiology, 1985
The acrA mutation in Escherichia coli led to a substantial increase of the acriflavine-binding capacity of the cell, whereas the related mutations acrB (gyrB) and arcC did not. Metal ions such as Na+, K+, Mg2+, Ca2+ and Al3+ effectively released the bound acriflavine, in proportion to their ionic strengths.
H, Nakamura, T, Shinya
openaire   +2 more sources

NUTRIENT ACCUMULATION IN THE ABOVEGROUND BIOMASS, IN THE LITTER LAYER AND PHYLLODIES DECOMPOSITION OF Acacia mangium Willd.

open access: yesCiência Florestal, 2010
Nutrient concentrations and contents in the shoot (leaves, branches, bark and wood) in a five-years-old stand of Acacia mangium Willd. (mangium), decomposition rate of mangium phyllodies (modified leaves) and nutrient efficiency use were evaluated in a ...
Dieter Liebsch, Luiz Antonio Acra
doaj   +1 more source

Doing Business in Singapore [PDF]

open access: yes, 2005
[Exerpt] Singapore, a Republic with a multi-racial population of over 4 million, is an attractive place in which to do business. It has an enviable record of political stability and the government actively encourages investment by foreign business ...
Baker & McKenzie
core   +1 more source

Left‐displaced abomasum in a late‐pregnant goat

open access: yesVeterinary Record Case Reports, Volume 14, Issue 1, February 2026.
Abstract A female goat in late gestation was presented to a veterinary teaching hospital due to the sudden onset of abdominal distention and signs of cardiovascular depression. On admission, the goat exhibited an overloaded rumen, which seemed noticeably distant from the abdominal wall on the left‐hand side.
Eva Petzl   +4 more
wiley   +1 more source

Earliest fossil nematode (Mermithidae) in cretaceous Lebanese amber [PDF]

open access: yes, 1994
Un nématode Mermithidae inclus dans de l'ambre provenant du Liban représente le plus ancien nématode fossile connu. Ce spécimen est assigné à l'espèce nouvelle #H. libani$ sp. n., appartenant au genre, encore actuel #Heleidomermis$ Rubtsov.
Acra, A., Acra, F., Poinar, G.O. Jr
core  

AcrA dependency of the AcrD efflux pump in Salmonella enterica serovar Typhimurium [PDF]

open access: yesThe Journal of Antibiotics, 2011
Multidrug efflux pumps belonging to the resistance-nodulation cell division (RND) family have major roles in the intrinsic and elevated resistance of Gram-negative bacteria to a wide range of compounds. RND efflux pumps require two other proteins to function: a membrane fusion protein (MFP) and an outer membrane protein.
Seiji, Yamasaki   +4 more
openaire   +2 more sources

Evaluating School‐Based Substance Use Services: Insights From a Systematic Review*

open access: yesJournal of School Health, Volume 96, Issue 1, January 2026.
ABSTRACT Background Substance use among youth can have lifelong consequences and therefore requires early and targeted services for those at risk. Schools possess a unique opportunity to provide substance use services to youth for both prevention and intervention.
Hannah L. Maxey   +3 more
wiley   +1 more source

Study of Plasmid-Mediated Quinolone Resistance in Klebsiella pneumoniae: Relation to Extended-Spectrum Beta-Lactamases

open access: yesJournal of Pure and Applied Microbiology, 2022
Klebsiella pneumoniae (K. pneumoniae) is an important pathogen associated with various infections. The emergence of antibiotic resistances, such as quinolone resistance and those due to extended-spectrum beta-lactamases (ESBL), reduces the available ...
Marwah M. Bakri
doaj   +1 more source

Global Warming Affects the Pathogenesis of Important Fish Diseases in European Aquaculture

open access: yesReviews in Aquaculture, Volume 18, Issue 1, January 2026.
The effect of global warming on pathogens and their fish hosts that could exacerbate the negative outcomes for aquaculture. Changes in farming practices and the development of innovative mitigation tools may prove essential to cope with the effects and impacts of rising water temperatures on fish diseases in Europe.
George Rigos   +7 more
wiley   +1 more source

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