1,721,028 research outputs found
Acute heart rejection monitoring by an MS-DOS pC ECG processing tool
No full textThe interest of many researchers after the first experiments of heart transplant has become the detection of early signs of rejection. Although endomyocardial biopsy is still considered the gold standard against which any alternative method has to be compared, nevertheless this technique is invasive with risks of infection and heart damages. Therefore, our aim was to develope a user friendly computerized tool able to analyse the surface ECG signal in order to find any variation reliably related to the presence of AHR in between or within the transplanted
A user fiendly program for ECG acquisition and processing in Windows 3.1 environment
No full textIn order to verify the rejection effects in transplanted patients, a software program has been developed for the analysis of the ECG
Acquisizione e trattamento del segnale ECG tramite personal computer
No full textLa biopsia miocardiaca, attualmente considerata una metodologia standard con la quale qualsiasi tecnica va confrontata, è una tecnica invasiva di monitoraggio dei pazienti trapiantati. Essa inmoltre preve alti rischi di infezione e di danni cardiaci irreversibili. uno degli scopi della presente ricerca è stato quello di sviluppare un SW che implementasse le più recenti tecniche di analisi dell'ECG
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
Voltammetric behaviour of transition metal complexes with extended π systems schiff base ligands
No full textThe cathodic and anodic behaviour of the complex formed by Cu(II) and the extended π-system ligand N,N′-ethylenebis(monothioacetylacetonimine), [Cu{(sacac)2en}], was investigated in acetonitrile solvent at platinum and mercury electrodes by cyclic voltammetry, chronoamperometry and controlled potential coulometry. The first reduction process gives rise to the corresponding Cu(I) complex, stable in the electrolysis solution; the one at more negative potentials leads to unstable species. The oxidation products are a cationic compound with z=2, from which the starting ligand can be regenerated electrolytically, and free Cu(I) or Cu(II) ions, depending on the working potential
Voltammetric behaviour of transition metal complexes with extended - systems schiff base ligands
No full textThe redox properties of complexes of Pd(II), Cu(II) and Ni(II) with the N,N′-ethylenebis(acetylacetoniminate) ligand, [(acac)2en]2−, have been investigated by cyclic voltammetry, chronoamperometry and controlled potential coulometry in acetonitrile solvent at platinum and mercury electrodes. The one-electron oxidation product of [Pd{(acac)2en}] has been identified as the dimeric cation [Pd{(acac)2en}]22+; the cathodic reduction of the starting complex originates the corresponding Pd1 species, stable only in the voltammetric time-scale. The electrooxidation process of [Cu{(acac)2en}] leads to the short-lived corresponding [CuL]+ species, from which free Cu+ or Cu2+ ions generate, depending on the working potential; the overall cathodic process appears to be rather complicated. The [Ni{(acac)2en}] complex undergoes an irreversible one-electron oxidation in the voltammetric time-scale, while the overall anodic process gives rise to a doubly charged cationic species, from which the parent compound can be electrolytically regenerated. Comparisons with the previously reported voltammetric properties of N,N′-ethylenebis(monothioacetylacetoniminato) metal complexes have been done; the effect on EView the MathML source values of substitution of oxygen for sulphur in the atom donor set is outlined
Multielemental Characterization of Aerosol At Terra-nova Bay - Preliminary-results On the Fine Component During the 1990-91 Austral Summer
No full textVariations 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
Synthesis and X-ray Structural Characterization of the First Unbridged Diplatinum(III) Compound: Bis[bis(1-imino-1-hydroxy-2,2-dimethylpropane)-trichloro-platinum(III)]
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