536 research outputs found

    Assessment of left ventricular recovery in Tako-Tsubo cardiomyopathy using 2D strain echocardiography

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    Contre la dĂ©sertification De la convention internationale Ă  l'Ă©laboration participative des programmes d'action nationaux Comme toutes les conventions internationales, la convention sur la dĂ©sertification est un texte consensuel qui n'indique pas de façon explicite comment mettre en oeuvre toutes ses dispositions. Pourtant, chaque pays affectĂ© est tenu d'Ă©laborer et d'appliquer des programmes d'action nationaux qui doivent ĂȘtre appliquĂ©s par les acteurs les plus concernĂ©s, les communautĂ©s locales. Cet ouvrage propose une dĂ©marche pour l'Ă©laboration participative de ces programmes d'action. Il est la synthĂšse des rĂ©sultats et des recommandations de la ConfĂ©rence sous-rĂ©gionale de vulgarisation de la Convention de lutte contre la dĂ©sertification et de mise en oeuvre du Plan d'action du RIOD (RĂ©seau international des ONG sur la dĂ©sertification) en mai 1996. Cette confĂ©rence s'inscrivait dans une sĂ©rie de quatre rencontres sous-rĂ©gionales prĂ©conisĂ©es afin de faire connaĂźtre la convention Ă  un plus grand nombre d'acteurs. Masse Lo - Yacine Diagne - Emmanuel Seck - SĂ©rie Etudes et recherches n° 190-191 ISBN : 92-9130-0187 - Enda-Editions - BoĂźte Postale 3370 - Dakar - SENEGAL TĂ©l.: (221) 22-42-29 TĂ©lĂ©copie : (221) 23-51-57 E-mail : [email protected]. Prix : 100 FF frais de port inclus pour les pays du Nord - 2 000 FCFA (frais de port : 800 FCFA) pour les pays du SudDe la convention international

    Towards simulations of fuel rod behaviour during severe accidents by coupling TRANSURANUS with SCIANTIX and MFPR-F

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    Among the applications of the multiscale modelling approach in nuclear fuel rod performance, the coupling of integral thermo-mechanical fuel performance codes with lower-length meso-scale modules is of great interest. This strategy allows to overcome correlation-based approaches with mechanistic ones and test their application in accidental conditions. In this work, we explore the coupling between the TRANSURANUS fuel performance code and two meso-scale modules for fission gas/product behaviour: MFPR-F and SCIANTIX. These modules, coupled within TRANSURANUS, are assessed against the IFA-650.10 loss-of-coolant accident test to analyse their overall impact and highlight future developments toward mechanistic modelling of fission gas during accident scenarios

    Force and energy dissipation variations in non-contact atomic force spectroscopy on composite carbon nanotube systems

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    UHV dynamic force and energy dissipation spectroscopy in non-contact atomic force microscopy were used to probe specific interactions with composite systems formed by encapsulating inorganic compounds inside single-walled carbon nanotubes. It is found that forces due to nano-scale van der Waals interaction can be made to decrease by combining an Ag core and a carbon nanotube shell in the Ag@SWNT system. This specific behaviour was attributed to a significantly different effective dielectric function compared to the individual constituents, evaluated using a simple core-shell optical model. Energy dissipation measurements showed that by filling dissipation increases, explained here by softening of C-C bonds resulting in a more deformable nanotube cage. Thus, filled and unfilled nanotubes can be discriminated based on force and dissipation measurements. These findings have two different implications for potential applications: tuning the effective optical properties and tuning the interaction force for molecular absorption by appropriately choosing the filling with respect to the nanotube.Comment: 22 pages, 6 figure

    Absorption spectrum in the wings of the potassium second resonance doublet broadened by helium

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    We have measured the reduced absorption coefficients occurring in the wings of the potassium 4S-5P doublet lines at 404.414 nm and at 404.720 nm broadened by helium gas at pressures of several hundred Torr. At the experimental temperature of 900 K, we have detected a shoulder-like broadening feature on the blue wing of the doublet which is relatively flat between 401.8 nm and 402.8 nm and which drops off rapidly for shorter wavelengths, corresponding to absorption from the X doublet Sigma+ state to the C doublet Sigma+ state of the K-He quasimolecule. The accurate measurements of the line profiles in the present work will sharply constrain future calculations of potential energy surfaces and transition dipole moments correlating to the asymptotes He-K(5p), He-K(5s), and He-K(3d).Comment: 2 figure

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    Is metal theft committed by organized crime groups, and why does it matter?

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    Using the example of metal theft in the United Kingdom, this study used mixed methods to evaluate the accuracy of police estimates of the involvement of organised crime groups (OCGs) in crime. Police estimate that 20-30% of metal theft is committed by OCGs, but this study found that only 0.5% of metal thieves had previous convictions for offences related to OCGs, that only 1.3% were linked to OCGs by intelligence information, that metal thieves typically offended close to their homes and that almost no metal thefts involved sophisticated offence methods. It appears that police may over-estimate the involvement of OCGs in some types of crime. The reasons for and consequences of this over-estimation are discussed

    An exploratory randomised controlled trial of a premises-level intervention to reduce alcohol-related harm including violence in the United Kingdom

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    <b>Background</b><p></p> To assess the feasibility of a randomised controlled trial of a licensed premises intervention to reduce severe intoxication and disorder; to establish effect sizes and identify appropriate approaches to the development and maintenance of a rigorous research design and intervention implementation.<p></p> <b>Methods</b><p></p> An exploratory two-armed parallel randomised controlled trial with a nested process evaluation. An audit of risk factors and a tailored action plan for high risk premises, with three month follow up audit and feedback. Thirty-two premises that had experienced at least one assault in the year prior to the intervention were recruited, match paired and randomly allocated to control or intervention group. Police violence data and data from a street survey of study premises’ customers, including measures of breath alcohol concentration and surveyor rated customer intoxication, were used to assess effect sizes for a future definitive trial. A nested process evaluation explored implementation barriers and the fidelity of the intervention with key stakeholders and senior staff in intervention premises using semi-structured interviews.<p></p> <b>Results</b><p></p> The process evaluation indicated implementation barriers and low fidelity, with a reluctance to implement the intervention and to submit to a formal risk audit. Power calculations suggest the intervention effect on violence and subjective intoxication would be raised to significance with a study size of 517 premises.<p></p> <b>Conclusions</b><p></p> It is methodologically feasible to conduct randomised controlled trials where licensed premises are the unit of allocation. However, lack of enthusiasm in senior premises staff indicates the need for intervention enforcement, rather than voluntary agreements, and on-going strategies to promote sustainability
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