1,720,999 research outputs found
Identificazione analitica del GHB in matrici biologiche anche non convenzionali: lo stato dell’arte fino ai più moderni sviluppi tecnologici
No full textInvestimenti nel settore della produzione elettrica: un’analisi empirica delle politiche di siting
No full textLocally-unwanted Investiments and Voice Effects in Power Generation. An Empirical Analysis
No full textThis paper has investigated the location of Italian thermoelectric power plants in order to better
understand the strengths and weaknesses of market-based siting in energy sectors. An empirical
analysis has examined 91 green-field investment projects during the 1999-2006 period. When
selecting the site, developers take into account traditional location determinants (for instance,
profitability of local power markets). At the same time, they evaluate siting costs, which among
other things depend from the local community’s potential for collective action and opposition (e.g.
compensation demand, delays in investment timeline due to lobbying and litigations). We have
found that other things being equal, local capabilities to organize opposition have a greater impact
on location likelihood than concentrated environmental damages. This raises some concerns about
the efficiency of market-based siting for energy facilities
Nuovi investimenti nel settore elettrico tra opposizioni locali e processo autorizzativi
No full textFully automated systematic toxicological analysis of drugs, poisons and their metabolites by GC/MS
No full textThe availability of automated, rapid and reliable methods for the systematic toxicological analysis (STA) of drugs and poisons in biosamples is of great importance in clinical and forensic toxicology laboratories. Gas chromatography-continuous scan mass spectrometry (GC-MS) possesses a high potential in STA because of its selectivity and identification power. However, in order to develop a fully automated STA method based on GC-MS two main obstacles have to be overcome: (a) sample preparation is rather sophisticated owing to the need to isolate analytes from the aqueous matrix and to allow a correct GC repartition of polar analytes; (b) the large amount of information collected within a single analysis makes it difficult to isolate relevant analytical information (mass spectra of analytes) from the chemical noise. Using a bench-top GC-MS system equipped with a laboratory robot for sample preparation (the Hewlett-Packard 7686 PrepStation) and an original method for mass spectral purification, a fully automated STA procedure was developed involving isolation of drugs from the sample (whole blood with minimal pretreatment, plasma, urine) by means of solid-phase extraction, derivatization (trimethylsilylation) of the acidic-neutral and of the basic extracts, GC-MS analysis, processing of data, and reporting of results. Each step of the procedure, and the method for data analysis in particular, can be easily integrated with other existing STA methods based on GC-MS
Cocaine, benzoylecgonine, and ecgonine methyl ester determinations in postmortem urine and blood gas chromatography and capillary gas chromatography after Extrelut extraction
No full textA simple and rapid method for cocaine, benzoylecgonine, and Me ecgonine detn. in postmortem human urine and blood by gas chromatog. and capillary gas chromatog. was described. Elution through Extrelut columns is sufficient to complete the procedure. Protein denaturation with acetonitrile is very important for recovery of cocaine and its metabolites in postmortem blood and allows use of the Extrelut. The procedure could be improved, esp. regarding the instrumental step. Reliable detns. of cocaine, benzoylecgonine, and Me ecgonine could probably be obtained via capillary gas chromatog. with a NP detector using the same capillary column
The role of alcohol abuse in the etiology of heroin-related deaths. Evidence for pharmacokinetic interactions between heroin and alcohol.
No full text
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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