169,818 research outputs found
Integrated management of water resources. An operative tool to simplify, direct and measure the interventions
No full textLa gestione delle acque è stata per lungo tempo associata ad un approccio economico e produttivo, incapace di comprendere la complessità intrinseca dei corpi idrici e i possibili effetti negativi che lo sfruttamento della risorsa comporta sui territori. Nonostante la continua evoluzione degli strumenti a livello nazionale, spesso si riscontra una mancanza di coerenza tra le politiche settoriali che, a vario titolo, incidono direttamente e indirettamente sull’acqua come bene pubblico.
In questo contesto, l’approccio alla gestione integrata della risorsa risulta complesso, soprattutto per chi opera a vario titolo nel variegato panorama normativo e istituzionale. Il lavoro di ricerca si pone come obiettivo quello di semplificare i processi che indirizzano la pianificazione e la gestione della risorsa idrica, attraverso un dispositivo operativo in grado di sistematizzare gli obiettivi in materia di gestione idrica, analizzare i campi d’intervento e proporre politiche integrate e linee d’azione relative ad alcune dimensioni considerate importanti per la gestione, con conseguente monitoraggio delle possibili azioni progettuali. Il dispositivo, articolato in quattro fasi operative, è testato a livello preliminare nell’area del bacino idrografico del rio Posada (Provincia di Nuoro, Sardegna), con l’obiettivo di semplificare, indirizzare e misurare interventi coerenti di gestione integrata delle risorse idriche, la valorizzazione e la salvaguardia dai rischi idraulici dei territori fluviali, nonché di supportare strumenti di programmazione strategica e negoziata quali il contratto di fiume
Cambiano gli immigrati, anche le politiche possono cambiare con la cultura dell’accoglienza
No full textBridging the mortality gap: A new challenge in percutaneous coronary intervention for patients with cancer
No full textSerotonin and acetylcholine release response in the rat hippocampus during a spatial memory task
No full textGoing Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
rec. a F. Bessone, E. Malaspina (a c. di), Politica e cultura in Roma antica, Bologna 2004
No full textrecensione agli Atti di un convegno in memoria di Italo Lana, con contributi di G. Mazzoli (Seneca), R. Degl'Innocenti Pierini (Orazio), G. Garbarino (Cicerone), C. Lévy (Lucrezio, Seneca), P. Cugusi (ideologia militare), D. Lassandro (controversia De ara victoriae).Review the Proceedings of a conference in memory of Italian wool, with contributions from G. Mazzoli (Seneca), R. Degl'Innocenti Pierini (Horace), G. Garbarino (Cicero), C. Lévy (Lucretius, Seneca), P. Cugusi (military ideology), D. Lassandro (De dispute ara victoriae)
Mitomycin C in highly myopic eyes - Author reply
No full textOphthalmology. 2005 Feb;112(2):208-18; discussion 219.
Mitomycin C modulation of corneal wound healing after photorefractive keratectomy in highly myopic eyes.
Gambato C, Ghirlando A, Moretto E, Busato F, Midena E.
SourceRefractive Surgery Service and Antimetabolite Therapy Research Unit, Department of Ophthalmology, University of Padova, Padova, Italy.
Abstract
PURPOSE: To evaluate the role of topical mitomycin C in corneal wound healing (CWH) after photorefractive keratectomy (PRK) in highly myopic eyes.
DESIGN: Prospective, double-masked, randomized clinical trial.
PARTICIPANTS: Seventy-two eyes of 36 patients affected by high (>7 diopters) myopia.
METHODS: In each patient, one eye was randomly assigned to PRK with intraoperative topical 0.02% mitomycin C application, and the fellow eye was treated with a placebo. Postoperatively, mitomycin C-treated eyes received artificial tears (3 times daily, tapered in 3 months), whereas the fellow eye was treated with fluorometholone sodium 2% and artificial tears (3 times daily, tapered in 3 months).
MAIN OUTCOME MEASURES: Uncorrected visual acuity (UCVA) and best-corrected visual acuity (BCVA), contrast sensitivity, manifest refraction, and biomicroscopy. Contrast sensitivity was determined using the Pelli-Robson chart. Corneal confocal microscopy documented CWH.
RESULTS: Mean follow-up was 18 months (range, 12-36). No side effects or toxic effects were documented. At 12-month follow-up examination, UCVAs (logarithm of the minimum angle of resolution) were 0.4+/-0.48 and 0.5+/-0.53 (P = .03) in mitomycin C-treated eyes and corticosteroid-treated eyes, respectively. At 1 year, corneal haze developed in 20% of corticosteroid-treated eyes, versus 0% of mitomycin C-treated eyes. At 12, 24, and 36 months, corneal confocal microscopy showed activated keratocytes and extracellular matrix significantly more evident in untreated eyes (Ps = 0.004, 0.024, and 0.046, respectively).
CONCLUSION: Topical intraoperative application of 0.02% mitomycin C can reduce haze formation in highly myopic eyes undergoing PRK.
Comment in
Ophthalmology. 2006 Feb;113(2):357; author reply 357-8
The decrease of serotonin release induced by a tryptophan-free amino-acid diet does not affect memory performance in rats
No full textDispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Back surface measurements by rasterstereography for adolescent idiopathic scoliosis: from reproducibility to data reduction analyses.
No full textPURPOSE:
Aim of this cross-sectional study was to evaluate the reproducibility of back surface measurements obtained by rasterstereography (RS) in adolescents with idiopathic scoliosis (AIS), and to identify the most informative RS parameters through a multi-step reduction analysis approach.
METHODS:
Sixty-six AIS were assessed with a RS scanner. The assessment was repeated in the same day 15 min after the first scan and after 1 week. Intraclass-correlation analyses were conducted to verify the consistency of the measurements. A multi-step reduction technique including correlation, principal component analysis (PCA) and regression was employed to extract a core-set of key RS parameters.
RESULTS:
Back surface measures were obtained from 66 AIS aged 10-17 years (median 13), with a mild Scoliosis angle < 25 (median 20). The reliability over the 3 sessions proved high to very high, with all the intraclass correlation coefficients ≥ 0.8 and 32 out of 48 coefficients ≥ 0.9. Only 8 of the 12 parameters provided by the RS device showed significant inter-item correlations and were therefore considered for further analyses. PCA extracted 4 of them, which entered the final regression analysis. High beta coefficients were found for 2 predictors: "Surface rotation-rms" and "Side deviation-rms," which were found to be significantly associated with the dependent variable "Scoliosis angle."
CONCLUSIONS:
Data showed that RS measurements are reliable in AIS with mild severity of scoliosis. "Surface rotation" and "Side deviation" were the best descriptors of the Scoliosis angle and should be considered as key parameters when surveilling AIS with mild curves by RS surface topography. These slides can be retrieved under Electronic Supplementary Material
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