Search results for "14"
showing 10 items of 9841 documents
Fast and accurate methodology for direct mercury determination in hair and nails
2015
AbstractA solvent-free, easy, fast and waste-free methodology was developed for the determination of total mercury levels in hair and nails. Samples were taken from several volunteers and directly analysed, with levels of mercury in the range between 0.5 and 8 ng/mg. The influence of quantity of hair, as well as the addition of small amount of solvent and the necessity of previous treatment were studied. Also, a history of mercury exposure was provided by the distance of the hair from the scalp of each volunteer, the results of which were correlated with fish consumption. Furthermore, a short study of mercury in nails was carried out and correlated to the results from hair mercury levels. A…
Comparative ultrastructure and carbohydrate composition of gastroliths from Astacidae, Cambaridae and Parastacidae freshwater crayfish (Crustacea, De…
2012
21 pages; International audience; Crustaceans have to cyclically replace their rigid exoskeleton in order to grow. Most of them harden this skeleton by a calcification process. Some decapods (land crabs, lobsters and crayfish) elaborate calcium storage structures as a reservoir of calcium ions in their stomach wall, as so-called gastroliths. For a better understanding of the cyclic elaboration of these calcium deposits, we studied the ultrastructure of gastroliths from freshwater crayfish by using a combination of microscopic and physical techniques. Because sugars are also molecules putatively involved in the elaboration process of these biomineralizations, we also determined their carbohy…
Pre-conceptional and Peri-Gestational Maternal Binge Alcohol Drinking Produces Inheritance of Mood Disturbances and Alcohol Vulnerability in the Adol…
2018
Although binge drinking is on the rise in women of reproductive age and during pregnancy, the consequences in the offspring, in particular the inheritance of alcohol-related mood disturbances and alcohol abuse vulnerability, are still poorly investigated. In this study, we modeled both Habitual- and Binge Alcohol Drinking (HAD and BAD) in female rats by employing a two-bottle choice paradigm, with 20% alcohol and water. The exposure started 12 weeks before pregnancy and continued during gestation and lactation. The consequences induced by the two alcohol drinking patterns in female rats were assessed before conception in terms of behavioral reactivity, anxiety- and depressive-like behavior.…
A Time to Lead : Changes in Relational Team Leadership Processes over Time
2020
This study analyzes how team members perceive changes in relational leadership processes over time. Interview data from three virtual teams ( N = 18) were analyzed using qualitative thematic analysis. The findings illustrate how ideals of well-functioning leadership and teamwork communication can differ both between and within teams at different times. Team members may perceive benefits of the passage of time in teamwork, including experienced closeness, adjustment, and clarification of practices, as well as challenges such as rigidity and historical baggage. Organizations and teams may experience a shift in the ideals of leadership, but adapting to and adopting new forms of leadership over…
Comparing Different approaches - Data mining, Geostatistic, and Deterministic pedology - to assess the Frequency of WRB reference soil groups in the …
2014
Estimating frequency of soil classes in map unit is always affected by some degree of uncertainty, especially at small scales, with a larger generalization. The aim of this study was to compare different possible approaches - data mining, geostatistic, deterministic pedology - to assess the frequency of WRB Reference Soil Groups (RSG) in the major Italian soil regions. In the soil map of Italy (Costantini et al., 2012), a list of the first five RSG was reported in each major 10 soil regions. The soil map was produced using the national soil geodatabase, which stored 22,015 analyzed and classified pedons, 1,413 soil typological unit (STU) and a set of auxiliary variables (lithology, land-use…
“I love learning new things” : An institutional logics perspective on learning in professional journalism
2023
In contemporary working life, journalists are often faced with the pressures of an increasingly precarious field where employment is less stable and more contractual than in previous years. Consequently, learning as a skill has grown in importance as journalists enter and leave the job market. Previous research has often portrayed professional journalists as unwilling to learn due to the persistence of the institution of journalism. Consequently, this study examines learning in professional journalism through interviews with 30 Finnish journalists. We adopt the institutional logics perspective to examine which institutional logics manifest in journalists' descriptions of learning and how. W…
Conceptualising Violence in Close Relationships : Discrepancies Between Police Conceptions and the Letter of the Law in Finland
2020
AbstractThe focus in this Finland-based study is on violence in close relationships—a term that partly overlaps with the more commonly used ‘domestic violence’, ‘family violence’ and ‘intimate partner violence’. We demonstrate how police officers’ conceptualisations of such violence differ from how it is defined in relevant legal documents. The data consists of the Government Bill and legal text on the subject issued as part of a legal reform enacted in 2010, and of a qualitative sample of freelist responses from 79 police officers. We examined both sets of data using theory-driven directed content analysis and deriving from prevailing theoretical frameworks reflecting the family- and gende…
Legno e Architettura Contemporanea. Ragioni e modi dell’utilizzo del legno nel progetto di architettura.
La tesi tratterà la questione attinente la produzione architettonica attuale in legno che è stata ed è tutt’oggi oggetto di continui approfondimenti teorici. Le prime pubblicazioni sul tema le ritroviamo nella rivista di architettura Casabella già nell’anno 2000 a firma di Alberto Ferlenga e successivamente da Marco Biagi. Tutti e due gli autori riaffronteranno il problema nel 2009, nel 2013 e nel 2016 cercando di dare una risposta alle questioni insite nella produzione contemporanea di architetture in legno in cui nella maggior parte dei casi si ritrova un generale scollamento tra industria delle costruzioni e progettazione architettonica. L’attualità della cronaca, l’urgenza e lo spirito …
Mai ali che volano alto
2011
Cosa succede quando due studiosi del linguaggio dànno inizio a un inarrestabile gioco di parole a distanza? Il libro è il frutto di un serrato scambio a due voci. Una raccolta di tic verbali, calembours, doppi sensi e aforismi. Un modo di interrogarsi sui sistemi attraverso cui la nostra attenzione si scontra con la realtà di ogni giorno, resistendo e talvolta producendo improvvise impennate che sfociano nel doppio senso e nell'ironia più tagliente.