Search results for "RICH"
showing 10 items of 3360 documents
L’impatto del burnout, ansia e disturbi del sonno sulla qualità della vita degli infermieri di area critica: un protocollo di ricerca.
2022
Introduzione: La Qualità della Vita, viene definita dall’Organizzazione Mondiale della Sanità come “La percezione dell’individuo della propria posizione nella vita nel contesto dei sistemi culturali e dei valori di riferimento nei quali è inserito e in relazione ai propri obiettivi, aspettative, standard e interessi”. In relazione alla categoria infermieristica emerge un dato poco incoraggiante dalla letteratura internazionale; soltanto il 3,6% di essa è soddisfatta della propria attività lavorativa e professionale, inoltre in larga misura gli infermieri ritengono che molti aspetti della propria qualità della vita siano poco soddisfacenti. Materiale e metodi: Studio osservazionale multicent…
Nouvelles perspectives concernant la structure et la fonction du domaine carboxyl terminal de Hfq
2015
Accumulating evidence indicates that RNA metabolism components assemble into supramolecular cellular structures to mediate functional compartmentalization within the cytoplasmic membrane of the bacterial cell. This cellular compartmentalization could play important roles in the processes of RNA degradation and maturation. These components include Hfq, the RNA chaperone protein, which is involved in the post-transcriptional control of protein synthesis mainly by the virtue of its interactions with several small regulatory ncRNAs (sRNA). The Escherichia coli Hfq is structurally organized into two domains. An N-terminal domain that folds as strongly bent β-sheets within individual protomers to…
Un metodo single-point basato sulla IEEE 1459-2000 “effective apparent power resolution” per l’individuazione dei carichi disturbanti nei sistemi ele…
2009
A single-point approach based on nonactive power factor for the assessment of harmonic distortion sources in power systems
2022
This paper presents a study on the use of power factor indicators for the assessment of harmonic distortion sources in power systems. In detail the analysis is focused on the comparison between the proposed nonactive power factor (Q1/N) and the indicators of the IEEE Std. 1459-2010, and on the indicators feasibility in identifying the presence of harmonic distortion sources. As discussed in the paper, the proposed indicator can be evaluated with good accuracy, by means of typical power quantities measurements at the point of common coupling (PCC). Thus its measurement can be feasibly implemented in commercial platforms used for smart metering applications. To verify the proposal validity, s…
What drives the higher incidence of psychosis in London compared to Palermo?
2016
Background: Incidence of psychosis seems to be lower in Italy than in other European countries (Tansella et al. 1991; Lasalvia et al. 2012, Tarricone et al. 2012); however there are no studies comparing the incidence of psychotic disorder in Northern and Southern Europe. Methods: Incidence and socio-demographic data on all psychotic patients presenting for the first time to the mental health services of Palermo were collected over a period of three years. Palermo incidence rates were compared to South London rates obtained from the AESOP study (Kirkbride et al 2006). South London rates were reanalyzed excluding people aged 16-17 years and substance related psychoses. Second generation migra…
Effects of landscape composition on hoverflies (Diptera: Syrphidae) in mass-flowering crop fields within forest-dominated landscapes
2022
Agricultural intensification has led to structurally simplified landscapes with reduced and fragmented resources for farmland insects. However, studies on the effects of landscape composition on farmland insects have mainly been performed in areas dominated by open arable land and semi-natural grasslands, while studies from forest-dominated landscapes are scarce. This research examined the effects of landscape composition on hoverfly species richness and abundance in arable land in boreal forest-dominated landscapes. Hoverflies were sampled in 22 mass-flowering caraway (Carum carvi) fields in Central Finland using pan traps. The effects of landscape composition on species richness and abund…
Le infrastrutture idriche: finanziamento, regolazione e mercato
2010
Contrariamente a quanto avvenuto in Europa negli ultimi quindici anni in molti altri settori dove le reti infrastrutturali possono essere considerati come monopoli naturali e come tali storicamente di proprietà pubblica, il settore idrico in Italia è stato sostanzialmente immune dal processo di introduzione anche parziale di forme di competizione nel mercato fra operatori. Le ragioni di tale difficoltà sono certamente di tipo oggettivo, quali le caratteristiche tecniche ed economiche che rendono molto più difficile la competizione rispetto ad altri settori quali l’energia e le telecomunicazioni, l’elevato valore della rete infrastrutturale rispetto al valore delle risorsa, le implicazioni a…
The operating cost of an anaerobic membrane bioreactor (AnMBR) treating sulphate-rich urban wastewater
2014
The objective of this study was to evaluate the operating cost of an anaerobic membrane bioreactor (AnMBR) treating sulphate-rich urban wastewater (UWW) at ambient temperature (ranging from 17 to 33 degrees C). To this aim, energy consumption, methane production, and sludge handling and recycling to land were evaluated. The results revealed that optimising specific gas demand with respect to permeate volume (SGDp) and sludge retention time (for given ambient temperature conditions) is essential to maximise energy savings (minimum energy demand: 0.07 kW h m(-3)). Moreover, low/moderate sludge productions were obtained (minimum value: 0.16 kg TSS kg(-1) CODRemoved), which further enhanced the…
Structure and function of the vacuolar Ccc1/VIT1 family of iron transporters and its regulation in fungi
2020
Iron is an essential micronutrient for most living beings since it participates as a redox active cofactor in many biological processes including cellular respiration, lipid biosynthesis, DNA replication and repair, and ribosome biogenesis and recycling. However, when present in excess, iron can participate in Fenton reactions and generate reactive oxygen species that damage cells at the level of proteins, lipids and nucleic acids. Organisms have developed different molecular strategies to protect themselves against the harmful effects of high concentrations of iron. In the case of fungi and plants, detoxification mainly occurs by importing cytosolic iron into the vacuole through the Ccc1/V…
Mutilation of RNA phage Qβ virus-like particles: from icosahedrons to rods
2000
Icosahedral virus-like particles (VLPs) of RNA phage Qbeta are stabilized by four disulfide bonds of cysteine residues 74 and 80 within the loop between beta-strands F and G (FG loop) of the monomeric subunits, which determine the five-fold and quasi-six-fold symmetry contacts of the VLPs. In order to reduce the stability of Qbeta VLPs, we mutationally converted the amino acid stretch 76-ANGSCD-81 within the FG loop into the 76-VGGVEL-81 sequence. It led to production in Escherichia coli cells of aberrant rod-like Qbeta VLPs, along with normal icosahedral capsids. The length of the rod-like particles exceeded 4-30 times the diameter of icosahedral Qbeta VLPs.