1,721,032 research outputs found
Richiesta del legname di pregio proveniente da impianti di arboricoltura da legno
No full textIl progetto Life+Inbiowood, co-finanziato dall'Unione Europea, si propone di incrementare la biodiversità attraverso la produzione di legname derivante da innovativi impianti di arboricoltura da legno. Al suo interno è stata condotta una indagine di mercato mirata alla conoscenza dei consumi e degli assortimenti di legname pregiato maggiormente richiesti. Il lavoro, conclusosi nel giugno 2014, è stato realizzato attraverso un censimento delle aziende interessate e si è concretizzato in una serie di interviste per la determinazione degli assortimenti più richiesti. L'area interessata dallo studio è il territorio delle Valli Grandi Veronesi, la zona meridionale della pianta veronese. L'articolo presenta una sintesi dell'indagine
Dal Progetto LIFE + InBioWood un'indagine di mercato in Provincia di Verona
No full textIl progetto Life+Inbiowood, co-finanziato dall'Unione Europea, si propone di incrementare la biodiversità attraverso la produzione di legname derivante da innovativi impianti di arboricoltura da legno. Al suo interno è stata condotta una indagine di mercato mirata alla conoscenza della richiesta e dei diversi assortimenti di biomasse legnose a scopo energetico. Il lavoro, conclusosi nel giugno 2014, è stato realizzato attraverso l'estrapolazione di dati statistici dell'ARPAV e dell'ISTAT. L'area interessata dallo studio è il territorio delle Valli Grandi Veronesi, la zona meridionale della pianta veronese. L'articolo presenta una sintesi dell'indagine
Copper(II) compounds with NNO tridentate Schiff base ligands: effect of subtle variations in ligands on complex formation, structures and magnetic properties
No full textThe formation and the magnetic properties of the copper(II) compounds [Cu(L1)(py)](ClO4) (1a) and [Cu(L2)(py)](ClO4) (2a), bearing the NNO tridentate Schiff base ligand L1 = (E)-2-((3-aminoethylimino)methyl)phenolate or L2 = (E)-2-((3-aminopropylimino)methyl)phenolate (obtained by monocondensation of salicylaldehyde, salH, and ethylenediamine, en, or 1,3-propylenediamine, tn, respectively) and pyridine (py) are presented. These complexes are converted into new mono-, di- and trinuclear derivatives, whose nature depends on the length of the diamine used and hence on the size of the corresponding
metallacycle. Pyridine can be substituted by a molecule of N,N-dimethylformamide (DMF) in compound 2a, leading to the mononuclear [Cu(L2)(dmf)](ClO4) (2b), while 1a undergoes only decomposition under similar conditions. Pyrazine does not act as bridging ligand between two copper centres by substitution of py, but its reaction with 2a yields either the dinuclear compound [Cu2(L2)2(ClO4)2] (2c), with exclusion of pyridine, or the trinuclear [Cu3(L2)3(l3-OH)](ClO4)2 (2d), where pyrazine acts as base generating OH, and it does not appear in the product. Reaction of 1a with pyrazine yields only the trinuclear [Cu3(L1)3(l3-OH)](ClO4)2 (1d). Also with 2,20-bipyridine (2,20-bpy) dinuclear complexes are not formed, but bpy acts as bidentate ligand to copper yielding the pentacoordinated mononuclear compounds [Cu(L1)(2,20-bpy)](ClO4) (1e) and [Cu(L2)(2,20-bpy)](ClO4) (2e). The crystal structures of compounds 2b, 2c and 1e have been solved and are reported. The magnetic susceptibilities vM(T) of 1a and 2a have been studied, showing the absence of any measurable Cu–Cu interaction for 1a (en, five-membered ring), while a weak but interesting intermolecular Cu–Cu ferromagnetic coupling (J = +0.96(3) cm1) through the short dimeric CuO contacts is detected for 2a (tn, six-membered ring). The X-band EPR spectrum of 2a in a frozen methanol solution at 70 K shows the hyperfine coupling of
mononuclear copper with the three coordinated 14N atoms, yielding seven narrow lines
Revision of Mesozoic decapod crustaceans from Madagascar
No full textCharbonnier, Sylvain, Garassino, Alessandro, Pasini, Giovanni (2012): Revision of Mesozoic decapod crustaceans from Madagascar. Geodiversitas 34 (2): 313-357, DOI: 10.5252/g2012n2a5, URL: http://dx.doi.org/10.5252/g2012n2a
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
Validation of Albaidaplax ispalensis Garassino, Pasini & Castro, a fossil goneplacid crab from Spain and Italy (Crustacea: Decapoda: Goneplacidae)
No full textGarassino, Alessandro, Pasini, Giovanni, Castro, Peter (2023): Validation of Albaidaplax ispalensis Garassino, Pasini & Castro, a fossil goneplacid crab from Spain and Italy (Crustacea: Decapoda: Goneplacidae). Zootaxa 5318 (2): 297-298, DOI: 10.11646/zootaxa.5318.2.12, URL: http://dx.doi.org/10.11646/zootaxa.5318.2.1
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
Antisymbiosis. Preferential coordination of anionic oxygen versus neutral sulfur donor atoms of methylsulfanyl- or methylsulfinyl-acetato, 2-benzoato and 2-phenolato to the cis-PtII(PPh3)2 and PtII(dppe) residues
No full textThe interaction of an excess of the title ligands L- with the cis-Pt(phos)2 moieties gives compounds a-b cis-[Pt(L-O)2(phos)2] (a, phos = P(Ph)3; b, phos = 1⁄2 dppe) in which O- is preferred to S-coordination. Such preference is confirmed by the the fact that the same products are obtained by reaction of excess of L- with the previously reported a-d complexes [Pt(L-O,S)(phos)2]+, (c, phos = PPh3, d, phos = dppe) for which chelate ring opening occurs with rupture of Pt-S rather than Pt-O bonds. Compounds a can be obtained also by oxidative addition of HL to [Pt(PPh3)3]. The Pt-O bonds in compounds a-d are stable towards substitution by Me2SO, pyridine and tetramethylthiourea. Substitution of L’s occurs with N,N’-diethyldithiocarbamate, which forms a very stable chelate with Pt(II). Thiourea and N,N’-dimethylthiourea also react, because they give rise to cyclometallated products [Pt(phos)2(NRC(S)NHR)]+ (R = H, CH3), with one ionised thioamido group, as revealed by an X-ray investigation of [Pt(PPh3)2(NHC(S)NH2)]+. The preference of O versus S coordination, as well as the stability of the Pt-O bonds, are discussed in terms of antisymbiosis
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