Search results for "Fim"

Maxwell’s Equations

2012

The empirical basis of electrodynamics is defined by Faraday’s law of induction, by Gauss’ law, by the law of Biot and Savart and by the Lorentz force and the principle of universal conservation of electric charge. These laws can be tested – confirmed or falsified – in realistic experiments. The integral form of the laws deals with physical objects that are one-dimensional, two-dimensional, or three-dimensional, that is to say, objects such as linear wires, conducting loops, spatial charge distributions, etc. Thus, the integral form depends, to some extent, on the concrete experimental set-up. To unravel the relationships between seemingly different phenomena, one must switch from the integ…

Multi-plasmid clash in a bacterial community: plasmid viability depends on the ecological setting of hosts

2021

AbstractPlasmids are genetic elements that disperse horizontally between different strains and species of bacteria and a major factor in the dissemination of virulence factors and antibiotic resistance. Understanding the ecology of plasmids has a notable anthropocentric value and therefore the interactions between bacterial hosts and individual plasmids have been studied in detail. However, bacterial systems often carry multiple genetically distinct plasmids, but dynamics of these multiplasmid “clashes” has remained unstudied. Here, we set to investigate the survival of 11 mobilizable or conjugative plasmids in five different ecological settings. The key incentive was to determine whether p…

A pointwise selection principle for metric semigroup valued functions

2008

Abstract Let ∅ ≠ T ⊂ R , ( X , d , + ) be an additive commutative semigroup with metric d satisfying d ( x + z , y + z ) = d ( x , y ) for all x , y , z ∈ X , and X T the set of all functions from T into X . If n ∈ N and f , g ∈ X T , we set ν ( n , f , g , T ) = sup ∑ i = 1 n d ( f ( t i ) + g ( s i ) , g ( t i ) + f ( s i ) ) , where the supremum is taken over all numbers s 1 , … , s n , t 1 , … , t n from T such that s 1 ⩽ t 1 ⩽ s 2 ⩽ t 2 ⩽ ⋯ ⩽ s n ⩽ t n . We prove the following pointwise selection theorem: If a sequence of functions { f j } j ∈ N ⊂ X T is such that the closure in X of the set { f j ( t ) } j ∈ N is compact for each t ∈ T , and lim n → ∞ ( 1 n lim N → ∞ sup j , k ⩾ N , j…

Variability of the fimA gene in Porphyromonas gingivalis isolated from periodontitis and non-periodontitis patients

2011

Objective: The goal of this study was to determine the genetic variability of the fimA gene in Porphyromonas gingivalis isolates from Spanish patients. Study Design: Pooled subgingival samples were taken, processed and cultured in non-selective blood agar medium. Pure cultures of one to six isolates per patient were obtained and PCR and PCR-RFLP were used for fimbrillin gene (fimA) type determination of the extracted genomic (DNA). Results: Two hundred and twenty four Porphyromonas gingivalis isolates from 65 patients were analyzed consisting of 15 non-periodontitis patients (66 isolates) and 50 with periodontitis (158 isolates). Genotype II was the most prevalent (50.9%), while the other t…

Interpolation properties of Besov spaces defined on metric spaces

2010

Let X = (X, d, μ)be a doubling metric measure space. For 0 < α < 1, 1 ≤p, q < ∞, we define semi-norms When q = ∞ the usual change from integral to supremum is made in the definition. The Besov space Bp, qα (X) is the set of those functions f in Llocp(X) for which the semi-norm ‖f ‖ is finite. We will show that if a doubling metric measure space (X, d, μ) supports a (1, p)-Poincare inequality, then the Besov space Bp, qα (X) coincides with the real interpolation space (Lp (X), KS1, p(X))α, q, where KS1, p(X) is the Sobolev space defined by Korevaar and Schoen [15]. This results in (sharp) imbedding theorems. We further show that our definition of a Besov space is equivalent with the definiti…

Connected sums and the infimum of the Yamabe functional

1986

Human norovirus binding to select bacteria representative of the human gut microbiota

2016

Recent reports describe the ability of select bacterial strains to bind human norovirus, although the specificity of such interactions is unknown. The purpose of this work was to determine if a select group of bacterial species representative of human gut microbiota bind to human norovirus, and if so, to characterize the intensity and location of that binding. The bacteria screened included naturally occurring strains isolated from human stool (Klebsiella spp., Citrobacter spp., Bacillus spp., Enterococcus faecium and Hafnia alvei) and select reference strains (Staphylococcus aureus and Enterobacter cloacae). Binding in PBS was evaluated to three human norovirus strains (GII.4 New Orleans 2…

Le temps d'une expo. Infrastructure culturelle et aménagement éphémere à l'Expo.02 Suisse

2007

La problématique sous tendant ces pages s’interroge sur la manière dont les grands événements peuvent contribuer à la rénovation urbaine et du territoire et de même porte sur le thème de la relation entre les grandes expositions et les mécanismes de transformations des villes et des territoires contemporaines. Depuis leur apparition en Europe au milieu du XIXè siècle, les Expositions Universelles, Internationales ou encore Nationales ont été un prétexte pour réaliser des transformations éphémères ou permanentes dans la structure urbaine des villes d’accueil. Bien sur, leur rôle a changé, certains enjeux ont disparu, d’autres ont perdu leur valeur, d’autres encore ont fait apparaître l’expos…

Apparati effimeri lungo la navata della cattedrale di Palermo

2009

Una galassia seminata di stelle. Il festino di Santa Rosalia in una cronaca del 1693. Apparati effimeri e arti decorative

2018

Ripercorrendo le annotazioni del padre gesuita Ignazio de Vio sul Festino di Santa Rosalia del 1693 ci si sofferma sulle numerose personalità artistiche e sulle maestranze palermitane impegnate in quell'occasione ad abbellire il Cassaro con le loro creazioni, dagli argenti ai pregiati drappi, agli ori, alle gemme, agli stucchi, agli apparati effimeri. Going over the notes of the Jesuit Father Ignazio de Vio on the Festino di Santa Rosalia in 1693, one can linger over the numerous artistic personalities and workers from Palermo who were engaged on that occasion in embellishing the Cassaro with their creations, from silverware to precious drapes, gold, gems, stuccoes and ephemeral devices.