1,721,147 research outputs found
Insulinemia e concentrazione intraeritrocitaria del sodio in soggetti ipertesi e normotesi con alterato metabolismo dei carboidrati.
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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
Some new rhodium(I)-iridium(III) complexes with bridging hydride and chloride ligands
No full text[IrH5(PEt3)2] reacts with [(PR3)2Rh(μ2-Cl)2(PR3)2] (PR3 = PEt3 or 2 PR3 = Ph2PCH2CH2PPh2) to give the hydrido-bridged binuclear species [(PR3)2Rh(μ2-H)(μ2-Cl)IrH2(PR3)2] which show catalytic activity in alkene hydrogenation
Hybrid Scalable Coding For Packet Switched Video Communications In Wireless Environments
No full textComplessi di iridio(III) con leganti tridentati contenenti fosforo ed arsenico. Sintesi e caratterizzazione
No full textMono- and dihydrido-bridged tungsten-platinum complexes
No full textThe preparation and X-ray crystal structure of the monohydrido-bridged cation [(η5-C5H5) 2(H)W(μ-H)Pt-(Ph)(PEt3)2]+ and of the dihydrido-bridged cation [(η5-C5H5)2W(μ-H) 2Pt(Ph)(PEt3)]+ are reported. Structural and NMR data show that the W-Pt interaction is considerably stronger in the dihydrido than in the related monohydrido-bridged species
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
Generation of Reactive Intermediates in the Photochemistry of Binuclear Trihydridodiplatinum Complexes
No full textThe photochemistry of the complexes trans-trans monohydrido-bridged [(PEt3)2HPt(μ-H)PtH(PEt3)2][BPh4] (1) and trans-cis dihydrido-bridged [(PEt3)2HPt(μ-H)2Pt(PEt3)2] [BPh4] (2) is reported. Photolysis of 1 and 2 using 334-nm light occurs with good quantum yields to give irani-[PtH2(PEt3)2] (3a) and (ra/i5-[PtH(S)(PEt3)2]+(4) (S = solvent, e.g. acetonitrile). Photoproducts 3a and 4 are highly reactive and undergo a multiplicity of reactions depending upon experimental conditions. Evidence of H2elimination, photoinduced insertion of C02into the Pt-H bond of 3a, and abstraction of CI from chlorocarbon solvents by 3a and 4 is reported. © 1990, American Chemical Society. All rights reserved
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