Results 1 to 10 of about 3,056 (161)

Cloning and characterization of the iron uptake gene iutA from avian Escherichia coli [PDF]

Brazilian Archives of Biology and Technology, 2008
The aim of this work was to isolate, clone and characterize the iron uptake gene iutA from avian pathogenic E. coli (APEC). The iutA gene was isolated from the strain APEC 9, serotype O2:H9, which was cloned in the expression vector pET101/D-TOPO.
Emerson Venancio, Marilda CARLOS Vidotto   +1 more
exaly   +6 more sources

The ferric aerobactin receptor IutA, a protein isolated on agarose column, is not essential for uropathogenic Escherichia coli infection El receptor de aerobactina IutA, una proteína aislada en columna de agarosa, no es esencial para la infección por Escherichia coli uropatógena O receptor de aerobactina IutA, uma proteína isolada em coluna de agarose, não é essencial para a infecção por Escherichia coli uropatogênica

Revista Latino-Americana de Enfermagem, 2012
Although many proteins have been described involved in Escherichia coli colonization and infection, only few reports have shown lectins as important components in these processes. Because the mechanisms underlying E.
Taise Natali Landgraf, Alan Berlese, Fabricio Freitas Fernandes, Mariani Lima Milanezi, Roberto Martinez, Ademilson Panunto-Castelo   +5 more
doaj   +2 more sources

Firewood residential heating – local versus remote influence on the aerosol burden [PDF]

Atmospheric Chemistry and Physics, 2021
We report the first-time use of the Lagrangian particle dispersion model (LPDM) FLEXPART to simulate isotope ratios of the biomass burning tracer levoglucosan.
C. Betancourt, C. Betancourt, C. Küppers, T. Piansawan, T. Piansawan, U. Sager, A. B. Hoyer, H. Kaminski, G. Rapp, A. C. John, A. C. John, M. Küpper, M. Küpper, U. Quass, U. Quass, T. Kuhlbusch, T. Kuhlbusch, J. Rudolph, A. Kiendler-Scharr, I. Gensch   +19 more
doaj   +1 more source

Testing Filter-Based Air Cleaners with Surrogate Particles for Viruses and Exhaled Droplets

Atmosphere, 2022
Indoor air cleaners can contribute to reducing infection risks by the filtration of virus-carrying droplets. There are various national standards to test indoor air cleaners that determine the clean air delivery rate (CADR), but typically only as a size ...
Stefan Schumacher, Arantxa Banda Sanchez, Anna Caspari, Katharina Staack, Christof Asbach   +4 more
doaj   +1 more source

Effect of an Aerosol Dryer on Ambient PM Measurements with SDS011 Low Cost Sensors during a Two-year Period in Duisburg, Germany

Aerosol and Air Quality Research, 2023
The performance of low-cost particulate matter (PM) sensors (NovaFitness SDS011) in connection with a self-developed aerosol dryer has been investigated in ambient air measurements over a two-year period by comparing the reported mass concentration of ...
Martin Nothhelfer, Oliver Sperber, Ana Maria Todea, Britta Schunke, Olga Romazanowa, Stefan Schumacher, Dieter Bathen, Christof Asbach   +7 more
doaj   +1 more source

Investigation of the Effect of Aerosolized TiO2 Nanoparticles on the NO2 Concentrations under UVA Exposure

Aerosol and Air Quality Research, 2021
Engineered nanomaterials (ENM) are utilized and produced during many engineering processes. However, they may generate airborne nanoparticles during different phases of their life cycles. TiO2, which is known for its photocatalytic properties, especially
Ali Mohamadi Nasrabadi, Ana Maria Todea, Carmen Wolf, Tolga Demirel, David Habryka, Christof Asbach   +5 more
doaj   +1 more source

Reducing Particle Exposure and SARS-CoV-2 Risk in Built Environments through Accurate Virtual Twins and Computational Fluid Dynamics

Atmosphere, 2022
The World Health Organization has pointed out that airborne transmission via aerosol particles can be a strong vector for the spread of SARS-CoV-2.
Fabian Quintero, Vijaisri Nagarajan, Stefan Schumacher, Ana Maria Todea, Jörg Lindermann, Christof Asbach, Charles M. A. Luzzato, Jonathan Jilesen   +7 more
doaj   +1 more source

New Perspective on Planar Inductive Sensors: Radio-Frequency Refractometry for Highly Sensitive Quantification of Magnetic Nanoparticles

Sensors, 2023
We demonstrate how resonant planar coils may be used as sensors to detect and quantify magnetic nanoparticles reliably. A coil’s resonant frequency depends on the adjacent materials’ magnetic permeability and electric permittivity.
José Luis Marqués-Fernández, María Salvador, José Carlos Martínez-García, Pablo Fernández-Miaja, Alfredo García-Arribas, Montserrat Rivas   +5 more
doaj   +1 more source

VIRULENCE DETERMINANTS OF ESCHERICHIA COLI STRAINS ISOLATED FROM SURGICAL SITE INFECTIONS AT SELECTED HOSPITALS IN SYRIA [PDF]

Bulletin of Pharmaceutical Sciences. Assiut University, 2020
Escherichia coli is one of the most commonly isolated pathogens from surgical site infections (SSIs) that accounts for significant morbidity and mortality, especially with high virulent strains.
K. Al Kwatli, A. Abou Sulaiman, N. Daoud
doaj   +1 more source

Validation of the silicon nanoparticle production on the pilot plant scale via long-term gas-phase synthesis using a microwave plasma reactor

Applications in Energy and Combustion Science, 2023
The formation of crystalline silicon nanoparticles by homogeneous gas-phase reactions as a direct way to produce high-purity raw material is applied. For this purpose, a microwave-assisted plasma reactor is used.
Frederik Kunze, Stefan Kuns, Tim Hülser, Hartmut Wiggers, Sophie M. Schnurre   +4 more
doaj   +1 more source