1,721,341 research outputs found
Paoletti P., Settia A.A., Storia di Voghera. Dalla preistoria all'età viscontea, Edo-Edizioni Oltrepò, Voghera 2003
No full textRecensione al volume: Paoletti P., Settia A.A., Storia di Voghera. Dalla preistoria all'età viscontea, Edo-Edizioni Oltrepò, Voghera 200
Testi še-ur5-ra da Girsu conservati al British Museum
No full textIl volume presenta l'edizione di cento tavolette di età neo-numerica provenienti dalla città di Girsu e appartenenti alle collezioni del British Museum; la quasi totalità di questi testi appartiene alla tipologia dei cosiddetti "še ur5-ra", contratti di prestito di orzo, e copre un arco di tempo che va dal 34° anno del regno di Šulgi al 7° anno del suo successore Šu-Sîn
The Macrocyclic Effect: Thermodynamic Parameters for the Formation of Zinc(II) Complexes with Macrocyclic Ligands of Varying Ring Size
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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
Temperature and pressure effects on the electronic transitions of nickel(II) complexes with C,C-dimethylethylenediamine and N,N-dimethylethylenediamine
No full textElectronic spectra of NiL2X2 (L = C,C-dimethylethylenediamine and N,N-dimethylethylenediamine; X = various anions) thermochromic complexes were obtained at different temps. and pressures; increasing temp. shifts the electronic transition toward lower frequencies whereas the effects of pressure are opposite in direction with blue shifts occurring. At least with diamines involving alkyl groups of the bulk of Et or Me, steric factors are minimal, and the chief mechanism detg. thermochromism in these complexes is the Lever effect. An increase in temp. causes the equatorial interactions to decrease with a simultaneous increase in axial interactions. With an increase in pressure the reverse occurs; the equatorial interactions increase while the axial interactions decrease. There was an anion effect on the d-d transitions with increasing pressure
First Potentiometric Determination of Stability Constants of Nickel(II) Complexes with Tetraazacycloalkanes
No full textBronchial hyperresponsiveness, genetic predisposition and environmental factors: The importance of epidemiological research
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