112 research outputs found
The Bacterial Fimbrial Tip Acts as a Mechanical Force Sensor
The subunits that constitute the bacterial adhesive complex located at the tip of the fimbria form a hook-chain that acts as a rapid force-sensitive anchor at high flow
Influence of phosphorus on copper sensitivity of fluvial periphyton: the role of chemical, physiological and community-related factors
The influence of eutrophication of fluvial ecosystems (caused by increased phosphorus concentrations) on periphyton Cu sensitivity is explored from a multi-scale perspective, going from the field to the laboratory. The study design included three tiers: a field study including the characterization of land use and the ecological state of the corresponding river sections in the Fluvià River watershed, an experimental investigation performed with natural periphyton from the previously studied stream sites in indoor channels, and finally a culture study in the laboratory. Results showed that differences in copper sensitivity of natural periphyton communities followed the gradient of nutrient concentration found in the field. Results from the culture experiments demonstrated that both, P-conditions during growth and P-content in the media are important factors modulating the toxicological response of algae to Cu. The observations from this study indicate that the ecological effects of metal pollution in rivers might be obscured by eutrophication
Diatom assemblages in a reservoir sediment core track land-use changes in the watershed
How to combat cyanobacterial blooms: strategy toward preventive lake restoration and reactive control measures
Clinical Follow-up of Patients with Behçet Uveitis after Discontinuation of Infliximab Therapy
Predicting the orientation of protein G B1 on hydrophobic surfaces using Monte Carlo simulations
Analisi di correlazione genotipo fenotipo in una famiglia con retinite pigmentosa autosomica dominante associata ad una nuova mutazione nel gene PRPF8
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