65,081 research outputs found
Simulation of the operation of detention tanks
No full textThe performance of detention tanks with different characteristics (volume, on-line and off-line arrangement) has been evaluated according to the results of a continuous simulation. The conceptual simplified model for sewer system simulation (COSMOSS) model has been used to simulate the operation of the tanks. The differences between the performance of on-line and off-line tanks and the influence of the characteristics of different catchments have been examined. According to the results of the simulations detention tanks demonstrated good performances in total suspended solids retention and this evenience can certainly help to prevent water pollution of receiving water bodies in urban areas, even if the differences between the catchments, especially regard to the first flush effect, influence the performance of the tanks. Anyway considerable good efficiencies can be obtained with tank volumes of about 30-50 m 3/haimp, in terms of number, maximum concentrations and duration of overflows, generally not guaranteed only with overflow device
A simple method for the isolation, cultivation and characterization of endothelial cells from rabbit coronary circulation.
No full textInflammation: The Link Between Obesity and Cardiovascular Risk
No full textIt is now clear that adipose tissue is more than just an area for fat storage, as suggested by a large body of recent literature. Fat, in particular abdominal depots, is an active source of biological mediators, which affect metabolic pathways and vascular function. These effects seem to be in part related to inflammation, especially in the pathogenesis and progression of atherosclerosis. As cardiovascular pathology, in particular coronary artery disease, still represents one of the main causes of morbidity and mortality in Western countries, the need for markers to make a correct risk stratification of patients is rising with the increasing complexity of treatment strategies now available. Thus, molecules produced by adipose tissue, known as adipocytokines, have been studied largely for their potential use as biomarkers both in primary and secondary prevention. The aim of this article is to examine recent evidence about the main adipocytokines, including leptin, adiponectin, resistin, and C-reactive protein, of which adipose tissue an important source. © 2010 Springer Science+Business Media, LLC
Evidenze di fagliazione inversa quaternaria nel settore ionico nord-orientale della Calabria (Rossano Calabro)
No full textIl settore dell’arco Calabro è interessato da sistemi di faglie normali attive, responsabili di forti terremoti storici di Magnitudo superiore a 6. Gli eventi sismici maggiori sono avvenuti principalmente tra lo stretto di Messina e la valle del Crati. Tra questi il terremoto del 1783 (M=6.9), del 1905 (M=7.3), del 1638 (M=6.7), del 1832 (M=6.5) e del 1836 (M=6.2) (Working Group CPTI 04). Alcuni di questi eventi sono stati associati all’attivazione di alcune strutture tettoniche (Galli & Scionti 2006; Galli & Bosi 2002; Valensise & Pantosti 2001). L’evento del 1836, che ha colpito il settore nord-orientale della Calabria, poco a sud della piana di Sibari, è stato associate tentativamente da Moretti (2000) all’attivazione di una serie di segmenti di faglia orientati E-W e NW-SE individuati tra Corigliano e Rossano. Questo lavoro ha come scopo quello di individuare strutture sismogenetiche attive nell’area colpita dall’evento sismico del 1836 ed, in particolare, quelle causative dell’evento sismico del 1836. A tal fine sono stati effettuati rilevamenti geologici e geomorfologici, con particolare riguardo alla zona dell’abitato di Mirto, poco a sud della città di Rossano Calabro, dove uno scavo ha messo in evidenza depositi di origine marina in facies deltizia, datati per via paleontologica ad un’età non più antica dell’Emiliano (Pleistocene inferiore), dislocati da una struttura tettonica ad orientazione circa NNW-SSE, a cinematica prevalentemente inverse, con senso di trasporto verso SSW. La dislocazione sembra interessare anche depositi continentali fluvio-colluviali incassati all’interno dei depositi deltizi e separati da questi da una superficie di erosione. Da questi sedimenti continentali è stato prelevato un campione per effettuare una datazione radiometrica, ancora in corso. La localizzazione di questa struttura tettonica è compatibile con l’ubicazione della zona epicentrale del terremoto del 1836, derivata dai dati macrosismici (CPTI 04). Inoltre, lungo
il lineamento, pochi km a nord dello scavo studiato, in località Cento Fontane, viene segnalata risorgenza di acque calde in occasione dell’evento sismico menzionato.PublishedFirenze, Italia3.2. Tettonica attivaope
Feasibility and usefulness of right ventricular ultrasonic tissue characterization with integrated backscatter in patients with unsuccessfully operatively "repaired" tetralogy of Fallot
No full textEvidenze di fagliazione inversa quaternaria nel settore ionico nord-orientale della Calabria (Rossano Calabro)
No full textIl settore dell’arco Calabro è interessato da sistemi di faglie normali attive, responsabili di forti terremoti storici di Magnitudo superiore a 6. Gli eventi sismici maggiori sono avvenuti principalmente tra lo stretto di Messina e la valle del Crati. Tra questi il terremoto del 1783 (M=6.9), del 1905 (M=7.3), del 1638 (M=6.7), del 1832 (M=6.5) e del 1836 (M=6.2) (Working Group CPTI 04). Alcuni di questi eventi sono stati associati all’attivazione di alcune strutture tettoniche (Galli & Scionti 2006; Galli & Bosi 2002; Valensise & Pantosti 2001). L’evento del 1836, che ha colpito il settore nord-orientale della Calabria, poco a sud della piana di Sibari, è stato associate tentativamente da Moretti (2000) all’attivazione di una serie di segmenti di faglia orientati E-W e NW-SE individuati tra Corigliano e Rossano. Questo lavoro ha come scopo quello di individuare strutture sismogenetiche attive nell’area colpita dall’evento sismico del 1836 ed, in particolare, quelle causative dell’evento sismico del 1836. A tal fine sono stati effettuati rilevamenti geologici e geomorfologici, con particolare riguardo alla zona dell’abitato di Mirto, poco a sud della città di Rossano Calabro, dove uno scavo ha messo in evidenza depositi di origine marina in facies deltizia, datati per via paleontologica ad un’età non più antica dell’Emiliano (Pleistocene inferiore), dislocati da una struttura tettonica ad orientazione circa NNW-SSE, a cinematica prevalentemente inverse, con senso di trasporto verso SSW. La dislocazione sembra interessare anche depositi continentali fluvio-colluviali incassati all’interno dei depositi deltizi e separati da questi da una superficie di erosione. Da questi sedimenti continentali è stato prelevato un campione per effettuare una datazione radiometrica, ancora in corso. La localizzazione di questa struttura tettonica è compatibile con l’ubicazione della zona epicentrale del terremoto del 1836, derivata dai dati macrosismici (CPTI 04). Inoltre, lungo
il lineamento, pochi km a nord dello scavo studiato, in località Cento Fontane, viene segnalata risorgenza di acque calde in occasione dell’evento sismico menzionato.PublishedFirenze, Italia3.2. Tettonica attivaope
Prognostic value of intra-left ventricular electromechanical asynchrony in patients with hypertrophic cardiomyopathy
No full textStapled transanal rectal resection in solitary rectal ulcer associated with prolapse of the rectum: a prospective study
No full textPURPOSE : At present, none of the conventional surgical treatments of solitary rectal ulcer associated with internal rectal prolapse seems to be satisfactory because of the high incidence of recurrence. The stapled transanal rectal resection has been demostrated to successfully cure patients with internal rectal prolapse associated with rectocele, or prolapsed hemorrhoids. This prospective study was designed to evluate the short-term and long-term results of stapled transanal rectal resection in patients affected by solitary rectal ulcer associated with internal rectal prolapse and nonresponders to biofeedback therapy.
METHODS: Fourteen patients were selected on the basis of validated constipation and continence scorings, clinical examination, anorectal manometry, defecography, and colonoscopy and were submitted to biofeedback therapy. Ten nonresponders were operated on and followed up with incidence of failure, defined as no improvement of synptoms and/or recurrence of rectal ulceration, as the primary outcome measure. Operative time, hospital stay, postoperative pain, time to return to normal activity, overall patient satisfaction index, and presence of residual rectal prolapse also were evaluated.
RESULTS: At a mean follow-up of 27.2 (range, 24-34)months symptoms significantly improved, with 80 percent of excellent/good results and none of the ten operated patients showed a recurrence of rectal ulcer. Operative time, hospital stay, and time to return to normal activity were similar to those reported after stapled transanal rectal resection for obstructed defecation, whereas postoperative pain was slightly higher. One patient complained of perineal abscess,requiring surgery.
DISCUSSION: The stapled transanal rectal resection is safe and effective in the cure of solitary rectal ulcer associated with internal rectal prolapse, with minimal complications and no recurrences after two years. Randomized trials with sufficient number of patients are necessary to compare the efficacy of stapled transanal rectal resection with the traditional surgical treatments of this rare condition
Differential diagnosis between usual interstitial pneumonia (UIP) and nonspecific interstitial pneumonia (NSIP) assessed by high-resolution computed tomography (HRCT)
No full textDifferential diagnosis between usual interstitial pneumonia (UIP) and nonspecific interstitial pneumonia (NSIP) assessed by high-resolution computed tomography (HRCT). Radiologia Medica, vol. 19, n. 5-6, 2005, pp. 472-487 Bna C, Zompatori M, Poletti V, Spaggiari E, Chetta A, Calabro E, Ormitti F, Berti E, Cancellieri A, Chilosi M. Sezione di Scienze Radiologiche, Dipartimento di Scienze Cliniche, Universita degli studi di Parma, Parma, Italy. PURPOSE: The aim of this study was to assess the accuracy of high-resolution CT in the differential diagnosis between UIP and NSIP, and the correlations with histological and functional findings. MATERIALS AND METHODS: Patients underwent thin-collimation spiral CT (1 mm), with 10-mm interval. Pulmonary function was assessed with a pneumotacograph and body plethysmograph connected with a computer for data analysis. Three pathologists, blinded to the clinical and functional data, provided a histological diagnosis based on established criteria reported in the literature. The study group only included patients with a histological diagnosis of either UIP or NSIP. RESULTS: We achieved a correct diagnosis of NSIP in 86.6% of cases (76.4% sensitivity; 84.6% specificity), whereas UIP was correctly diagnosed in 73.3% of cases (84.6% sensitivity; 76.5% specificity). An 80% agreement was achieved between the HRCT and histological findings in the whole case series (73% sensitivity, 87% specificity, p<0.01). CONCLUSIONS: The most important finding of our study was that a ground glass appearance equal to or greater than 15% is highly suggestive of NSIP. Therefore, our results could be useful to confirm a suggested diagnosis of NSIP
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