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The 7th International Conference on Shock and Impact Loads on Structures

作者： M.Yazid yahya W.j.Cantwell G.S.Langdon G.N.Nurick University of Liverpool United Kingdom University of Cape Town South Africa

＜正＞This paper presents the results of a large number of blast tests on a range of carbon fibre-reinforced poly-ether-imide（PEI）,carbon-fibre reinforced epoxy and glass fibre reinforced PEI *** testing was undertaken on a ballistic pendulum ***,Iocalised fibre buckling,fibre fracture and shear failure at the boundary of the clamped plates were identified as the failure mechanisms in the laminates,with their severity depending on the panel thickness and the applied impulse. Delamination was very Iocalised along the centre plane of the laminate,due to the very high interlaminar fracture toughness of these *** impulse to initiate rear surface fibre fracture was observed to increase rapidly with laminate *** impulses associated with the onset of rear-surface fibre fracture and complete failure of the target were similar,suggesting that rear surface fibre fracture is a pre-cursor to complete failure in these *** on the carbon fibre reinforced epoxy indicated that it offers a similar blast resistance to its carbon fibre counterpart.

关键词： Composite panel blast loading failure laminates

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Role of serial multiparametric magnetic resonance imaging in prostate cancer active surveillance

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World journal of Radiology 2016年第4期8卷 410-418页

作者： Larissa j Vos Michele janoski Keith Wachowicz Atiyah yahya Oleksandr Boychak john Amanie Nadeem Pervez Matthew B Parliament Edith Pituskin B Gino Fallone Nawaid Usmani Department of Oncology Cross Cancer InstituteUniversity of Alberta Department of Radiology and Diagnostic Imaging Cross Cancer InstituteUniversity of Alberta

AIM:To examine whether addition of 3T multiparametric magnetic resonance imaging(mp MRI)to an active surveillance protocol could detect aggressive or progressive prostate ***:Twenty-three patients with low risk disease were enrolled on this active surveillance study,all of which had Gleason score 6 or less *** patients had clinical assessments,including digital rectal examination and prostate specific antigen(PSA)testing,every 6 mo with annual 3T mp MRI scans with gadolinium contrast and minimum sextant prostate *** MRI images were anonymized of patient identifiers and clinical information and each scan underwentradiological review without the other results *** statistics for demographics and follow-up as well as the sensitivity and specificity of mp MRI to identify prostate cancer and progressive disease were ***:During follow-up(median 24.8 mo)11 of 23 patients with low-risk prostate cancer had disease progression and were taken off study to receive definitive *** progression was identified through upstaging of Gleason score on subsequent biopsies for all 11 patients with only 2 patients also having a PSA doubling time of less than 2 *** 23 patients had biopsy confirmed prostate cancer but only 10 had a positive index of suspicion on mp MRI scans at baseline(43.5% sensitivity).Aggressive disease prediction from baseline mpM RI scans had satisfactory specificity(81.8%)but low sensitivity(58.3%).Twentytwo patients had serial mp MRI scans and evidence of disease progression was seen for 3 patients all of whom had upstaging of Gleason score on biopsy(30% specificity and 100% sensitivity).CONCLUSION:Addition of mp MRI imaging in active surveillance decision making may help in identifying aggressive disease amongst men with indolent prostate cancer earlier than traditional methods.

关键词： Active surveillance Treatment triaging Magnetic resonance imaging Indolent disease Prostate cancer

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