1,721,466 research outputs found
The changing ideas about valuation mechanisms in the interwar period: Toeplitz, Marlio and the "Great transformation"
No full textImproved Determination of Taurine by High-Performance Anion-Exchange Chromatography with Integrated Pulsed Amperometric Detection (HPAEC-IPAD)
No full textThe advantages of the high selectivity of high-performance anion-exchange chromatography (HPAEC) and the sensitive response of taurine at a gold electrode with integrated pulsed amperometric detection (IPAD) have been combined, in order to establish a new analytical method for its determination in real matrices. Potential-time settings of the potential waveform were optimized in order to get the highest amperometric response. The separation of taurine in milk samples was achieved using an alkaline eluent (100 mM NaOH) containing 1 mM Ba(OAc)(2) and a column temperature of 15degreesC. The inherent merits of using a barium-modified eluent, in terms of taurine separation and detection, are demonstrated. The enhancement in sensitivity under these experimental conditions makes it suitable for taurine determination in milk. Indeed, this method allows high recovery of taurine and satisfies the necessary requirements with respect to accuracy, repeatability and sensitivity with a detection limit of 50 nmol/L, which corresponds to 2.5 pmol. The taurine content in milk samples of some common mammals was evaluated, including human milk. In goat's milk, the taurine content ranged from 46 to 91 mg/L, whereas human and buffalo milk samples exhibited an average content of 18 mg/L and 23 mg/L, respectively
Determinazione della taurina in matrici alimentari mediante cromatografia a scambio anionico e rivelazione amperometrica pulsata (HPAEC-PAD)
No full textFinancial Elites and the Italian Corporate Network, 1913-2001
No full textThis paper analyses the Italian corporate network from 1913 to 2001 focusing on seven benchmark years (1913, 1927, 1936, 1960, 1972, 1983, and 2001). For each benchmark year, the top 250 companies (50 financial and 200 non financial companies) by total assets have been selected. For each benchmark year, after showing some descriptive statistics, the paper develops a network connectivity analysis of the system. This is integrated by a prosopographic study of the big linkers, defined as those directors who had the highest number of board positions in each benchmark year. We assume that the big linkers who held directorships in both banks and industrial firms functioned as the nation’s financial elite. This seems a promising approach as it allows to show the interactions between structure and agency, that is, between the evolution of the structure of the corporate network and the profile of business leaders
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
The effect of the inclusive culture on workers’ well-being: The mediating role of the organizational identification on worker’s objectification
No full textInclusiveness nowadays is one of the main goals of many organizations. Literature showed its link with positive individuals’ workplace experiences. In the same vein, the social identity approach has been fruitfully applied to explain organizational dynamics. In the present paper, we try to connect these two strands of research by considering the perception of inclusive culture within the organization as a potential antecedent of organizational identification and, as a consequence, of reducing the negative experience of the workplace and increasing the workers’ well-being. In a cross-sectional study, 296 workers from different sectors reported their perceptions of organizational inclusive culture, organizational identification, perceived objectification, job satisfaction, and burnout. To test our hypotheses, we conducted a serial mediational analysis where inclusive culture was modeled as the antecedent, organizational identification and objectification as two sequential mediators, and well-being (in terms of job satisfaction and burnout) as the outcome. In line with our rationale, perceived inclusive culture impacted positively on workers’ well-being via organizational identification, which as a consequence reduced the negative effect of perceived objectification. To our knowledge, the present study is the first to examine the possible role of perceived inclusiveness as an antecedent of organizational identification and the subsequent spillover of this latter factor on employees’ well-being. This shows the potentially positive effect that inclusive culture and organizational identification might have on employees’ workplace experiences
Quantitative Determination of Taurine in Real Samples by High-Performance Anion-Exchange Chromatography with Pulsed Electrochemical Detection
No full textAs taurine is a very important compound involved in a large number of metabolic processes, it is naturally present in the mammal tissues and is often deliberately added in some foods as a fortifying component. A detailed knowledge of taurine metabolic roles in biological systems can be obtained only if a sensitive, reliable and rapid analytical method is available. This article describes the successful application of high-performance anion-exchange chromatography coupled with integrated pulsed amperometric detection (HPAEC-IPAD) for taurine determination in egg white and yolk samples, as well extracts of human serum and urine. Applications are shown for determination of taurine in soft drinks and pharmaceutical preparations where the taurine content was evaluated by standard additions. These results were achieved without prior derivatization of taurine
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
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
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