Un grave deperimento dell'albicocco associato alla presenza di pseudomonadi fitopatogene

Viene presentata una nuova malattia dell'albicocco, il deperimento batterico, causata da Pseudomonas syringae pv. syringae.Si segnala un grave deperimento dell'albicocco riscontrato in alcune aree frutticole vocate della Romagna. Il sintomo principale è lo sviluppo di estesi cancri rameali che portano velocemente al dissccamento dei rami stessi e, successivamente, dell'intera pianta. Isolamenti dalle painte malate eseguiti nell'arco di un biennio hanno portato alla identificazione di alcune popolazioni batteriche fitopatogene appartenenti al genere Pseudomonas

Factors Associated With Recurrence of Advanced Colorectal Adenoma After Endoscopic Resection

Background & Aims: Studies have identified risk factors for recurrence of advanced colorectal adenoma (ACA) after polypectomy, but the relative importance and interaction of these risk factors, and their potential impact on surveillance recommendations, are unclear. We aimed to develop a model to identify ACA features associated with risk of recurrence after polypectomy. Methods: In a retrospective study, we collected data from 3360 patients who underwent colonoscopy with polypectomy at University of Foggia from 2004 through 2008 and identified 746 patients with 1017 ACAs. We performed recursive partitioning analysis to identify factors associated with recurrence of ACA within 3 years after polypectomy. Results: Median ACA size was 16 mm (range, 8-34 mm) and median number was 1.5 (range, 1-2). Pedunculated, sessile, and nonpolypoid lesions accounted for 41.3%, 39.4%, and 19.3% of ACAs detected, respectively. Factors independently associated with local recurrence of ACA and metachronous distant polyps within 3 years after polypectomy included size and number of ACAs and grade of dysplasia. The recurrence rate was 4.2% in patients with a single ACA ≤15 mm without high-grade dysplasia (HGD), 21.3% in patients with HGD ≤15 mm, ACA without HGD >15 mm, or multiple ACAs without HGD ≤15 mm, and 57.9% in patients with HGD >15 mm. Conclusions: In this retrospective analysis of 746 patients with ACA who underwent polypectomy and surveillance colonoscopy within 3 years, the recurrence rate was highest in those with HGD ≥15 mm. These patients might benefit from more intensive surveillance, whereas patients with a single ACA without HGD ≤15 mm are at lower risk for and could be considered for longer follow-up intervals

Evolution of Trichoderma harzianum populations distribuited in peach orchards against Armillaria mellea

The aim of the work was to investigate the quantitative development of Trichoderma harzianum Rifai populations which were added in peach orchards to control Armillaria mellea (Vahl ex Fr.) Kummer. A two-year study (2000/01) was carried out in two peach orchards, located in the Cesena and Ravenna provinces, in which a T. harzianum-based commercial product was distributed in different doses in the planting holes. Soil samples were collected from different zones (rhizosphere of peach trees and between rows) of the two orchards, and the density of Trichoderma populations were quantified by serial dilution method in association with the use of a selective medium (Trichoderma-selective medium + propamocarb). The population density of Trichoderma was significantly higher, on average, in the rhizosphere of peach plants (2657 c.f.u./g) than between rows (uninoculated soil) (632 c.f.u./g), showing the successful settling down of the artificial inoculum. In the peach orchard located in Ravenna, this effect extended over at least 15 months after inoculum distribution

Prenatal and perinatal risk and protective factors for psychosis: a systematic review and meta-analysis

Prenatal and perinatal insults are implicated in the aetiopathogenesis of psychotic disorders but the consistency and magnitude of their associations with psychosis have not been updated for nearly two decades. The aim of this systematic review and meta-analysis was to provide a comprehensive and up-to-date synthesis of the evidence on the association between prenatal or perinatal risk and protective factors and psychotic disorders

A pilot study of capsule endoscopy after a standard meal for the detection and grading of oesophageal varices in cirrhotic patients

Capsule endoscopy has been proposed as an alternative to fibreoptic endoscopy for oesophageal varices evaluation in cirrhotics. However, it shows only moderate sensitivity compared to fibreoptic endoscopy

Detailed design optimization of the MITICA negative ion accelerator in view of the ITER NBI

ITERの加熱電流駆動を担う中性粒子入射装置（HNB）を確実にするため、NB実機試験施設（NBTF）をイタリアに建設中である。その中の試験装置MITICAにおいて、ITER HNBに必要とされる１MeVの負イオンビーム源の性能を実証する。本論文ではMITICAで試験する１MeV負イオンビーム源の最新設計を報告するものである