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Multi-parameter simultaneous extraction with a novel microwave sensor based on coupled resonators.
Sci Rep
October 2024
Univ. Brest, CNRS, Lab-STICC, UMR CNRS 6285, 29238, Brest, France.
Article Synopsis
- The work introduces a microwave sensor designed to measure three properties of solid samples: dielectric permittivity, loss tangent, and thickness, using a setup with three resonators sandwiching the sample.
- The interaction between the sample and resonators alters the sensor's electrical responses, which is analyzed to extract the desired properties.
- The proposed model was validated through 990 simulations and experimental tests with reference samples, demonstrating effective calibration and accurate multi-parameter sensing.
Impact of chromosomally encoded resistance mechanisms and transferable β-lactamases on the activity of cefiderocol and innovative β-lactam/β-lactamase inhibitor combinations against Pseudomonas aeruginosa.
J Antimicrob Chemother
October 2024
Servicio de Microbiología & Instituto de Investigación Biomédica de A Coruña (INIBIC), Complexo Hospitalario Universitario A Coruña, A Coruña, Spain.
Objectives: We aimed to compare the stability of the newly developed β-lactams (cefiderocol) and β-lactam/β-lactamase inhibitor combinations (ceftazidime/avibactam, ceftolozane/tazobactam, aztreonam/avibactam, cefepime/taniborbactam, cefepime/zidebactam, imipenem/relebactam, meropenem/vaborbactam, meropenem/nacubactam and meropenem/xeruborbactam) against the most clinically relevant mechanisms of mutational and transferable β-lactam resistance in Pseudomonas aeruginosa.
Methods: We screened a collection of 61 P. aeruginosa PAO1 derivatives.
Impact of multidrug resistance on the virulence and fitness of Pseudomonas aeruginosa: a microbiological and clinical perspective.
Infection
August 2024
Infectious Diseases Service, Hospital del Mar, Infectious Pathology and Antimicrobials Research Group (IPAR), Hospital del Mar Research Institute, Universitat Autònoma de Barcelona (UAB), CEXS-Universitat Pompeu Fabra, Passeig Marítim 25-27, 08003, Barcelona, Spain.
Pseudomonas aeruginosa is one of the most common nosocomial pathogens and part of the top emergent species associated with antimicrobial resistance that has become one of the greatest threat to public health in the twenty-first century. This bacterium is provided with a wide set of virulence factors that contribute to pathogenesis in acute and chronic infections. This review aims to summarize the impact of multidrug resistance on the virulence and fitness of P.
View Article and Find Full Text PDFMicrowave Imaging System Based on Signal Analysis in a Planar Environment for Detection of Abdominal Aortic Aneurysms.
Biosensors (Basel)
March 2024
Microwave Laboratory Research Group, Engineering Research Institute of Elche, Miguel Hernández University of Elche, 03202 Elche, Spain.
A proof-of-concept of a microwave imaging system for the fast detection of abdominal aortic aneurysms is shown. This experimental technology seeks to overcome the factors hampering the fast screening for these aneurysms with the usual equipment, such as high cost, long-time operation or hazardous exposure to chemical substances. The hardware system is composed of 16 twin antennas mastered by a microcontroller through a switching network, which connects the antennas to the measurement instrument for sequential measurement.
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