Search results for "Fen"
showing 10 items of 3710 documents
Responses to vulnerability : care ethics and the technologisation of eldercare
2020
This article argues for a re-conceptualisation of care relations and uses the re-conceptualisation to scrutinise the way in which technology is adopted in eldercare practices. First, it draws on the definition of care as attentiveness to vulnerability, as used in the tradition of care ethics. Second, it specifies four essential aspects of care relations: relationality, dyadic mutuality, corporeality and devotion. Third, using socio-technical and phenomenological perspectives, care relations are contrasted with the idea of intertwining technological and human actors in care practices. Finally, using two adaptations of telecare as examples, the essential aspects of care relations are shown to…
Beneficium e iniuria. Rappresentazioni del dono e dell’offesa nel De beneficiis di Seneca
2018
Rich resource environment of fish farms facilitates phenotypic variation and virulence in an opportunistic fish pathogen
2020
Phenotypic variation is suggested to facilitate the persistence of environmentally growing pathogens under environmental change. Here, we hypothesized that the intensive farming environment induces higher phenotypic variation in microbial pathogens than natural environment, because of high stochasticity for growth and stronger survival selection compared to the natural environment. We tested the hypothesis with an opportunistic fish pathogen Flavobacterium columnare isolated either from fish farms or from natural waters. We measured growth parameters of two morphotypes from all isolates in different resource concentrations and two temperatures relevant for the occurrence of disease epidemic…
Fenitrothion uptake and bioconcentration in the European eel(Anguilla anguilla)
1994
Eels (Anguilla anguilla) were exposed to 0.02 mg/L of the organophosphorus pesticide fenitrothion during 144 hours in semi‐static conditions. BCF, intBCF, uptake rate constants (Ku) and elimination rate constants (Kd) of fenitrothion were determined in brain, gills, blood and muscle tissues of the eel. A simple one‐compartment model fitted the uptake and elimination characteristics. Plateau were reached at different times in the different tissues: at 24 hr in gills, 72 hr in brain and blood and 120 hr in muscle tissue. BCF were ranged from 117 for blood to 658 for muscle. Muscle tissue showed the highest BCF, intBCF, Ku and the lowest Kd .
Inhibition of Gill Na+,K+-ATPase Activity in the Eel,Anguilla anguilla,by Fenitrothion
1998
European eels (Anguilla anguilla) were exposed to sublethal fenitrothion concentrations (0.02 and 0.04 mg/liter) in a continuous flow-through system for 4 days. Gill Mg2+- and Na+,K+-ATPase activities were evaluated after 2, 8, 12, 24, 32, 48, 56, 72, and 96 h of pesticide exposure. Results indicated that ATPase activity in gill tissue decreased as concentration of fenitrothion increased. Pesticide induced significant inhibitory effects on the Na+, K+-ATPase activity of A. anguilla, ranging from >56% inhibition at a sublethal concentration of 0.02 ppm to >73% inhibition at a sublethal concentration of 0.04 ppm. Eels were exposed to both fenitrothion concentrations for 96 h and then allowed …
Impaired glutathione redox status is associated with decreased survival in two organophosphate-poisoned marine bivalves
2002
Biomonitoring organophosphate (OP) exposure in marine environments is generally achieved by the measurement of acetylcholinesterase activity in bivalves like mussels. However, there is evidence that indicates that oxidative stress may be implied in OP toxicity. The aim of this study was to evaluate the relationship between survival from the OP insecticide fenitrothion and glutathione levels in marine bivalves. Mussels (Mytilus galloprovincialis Lam.) and scallops (Flexopecten flexuosus Poli) were exposed, in a time to death test, to their LC85 of fenitrothion for 96 h. OP-poisoned mussels showed reduced (GSH) and oxidised (GSSG) glutathione depletion in the digestive gland, muscle and gills…
Formazione iniziale degli insegnanti come formazione di giovani
2022
Curare la formazione iniziale degli insegnanti significa oggi innanzitutto formare le nuove generazioni giovanili. Il presente contributo si propone di mostrare alcuni fenomeni riguardanti la condizione giovanile in Italia, facendo riferimento a recenti studi, aggiornate indagini psicosociali e ad una ricerca in corso, condotta con stile fenomenologico sui vissuti degli studenti dei Corsi di laurea in Scienze della Formazione Primaria delle Università di Palermo ed Agrigento. Pur non potendo ancor compiutamente scorgere le conseguenze e le implicazioni pedagogico-educative del cambiamento epocale messo in moto dalla pandemia, si tenterà tuttavia di lasciar emergere da tali fenomeni alcune t…
La struttura dialettica
2017
Nelle Lezioni di pedagogia fondamentale, curate dall'Autore, questo testo costituisce il secondo capitolo della Quarta unità formativa, dal titolo La pedagogia fondamentale di stile fenomenologico-ermeneutico. Scrive l'Autore in avvio del capitolo: "In questa lezione procederemo seguendo questo metodo della ragione fenomenologica; e il movimento di ripresa potrà valere come approfondimento di quanto visto e argomentato in particolare nella lezione precedente, a proposito della pedagogia fondamentale come logos integrato. In particolare, la nuova focalizzazione sarà operata sopra due tesi che già conosciamo perché ricorrenti e caratterizzanti il nostro modello di ricerca pedagogica: la prima…
Glycation alters ligand binding, enzymatic, and pharmacological properties of human albumin.
2015
Albumin, the major circulating protein in blood plasma, can be subjected to an increased level of glycation in a diabetic context. Albumin exerts crucial pharmacological activities through its drug binding capacity, i.e., ketoprofen, and via its esterase-like activity, allowing the conversion of prodrugs into active drugs. In this study, the impact of the glucose-mediated glycation on the pharmacological and biochemical properties of human albumin was investigated. Aggregation product levels and the redox state were quantified to assess the impact of glycation-mediated changes on the structural properties of albumin. Glucose-mediated changes in ketoprofen binding properties and esterase-lik…
La buona scuola: la consultazione più grande d’Europa o una grande occasione perduta?
2015
L'articolo analizza la consultazione pubblica online dei cittadini (in corso dal 15 settembre al 15 novembre 2014) sulla riforma dell'istruzione nota come 'La Buona Scuola' illustrandone limiti ed effetti. L'articolo indaga inoltre sulle ragioni della protesta e sui movimenti sociali coinvolti. The article analyzes the online public consultation of citizens (underway from 15th September to 15th November 2014) on education reform known as 'The Good School Reform' illustrating its limits and effects. The article also explores the reasons for the protest against the reform and the social movements involved.