6,929 research outputs found

    Letter to the Editor

    Get PDF

    Honeycomb panel and method of making same Patent

    Get PDF
    Method for honeycomb panel bonding by thermosetting film adhesive with electrical heat mean

    Flexible honeycomb structure can bend to fit compound curves

    Get PDF
    For flexibility in forming a curved surface, a honeycomb configuration using multiple pleats has proved superior to the usual core structures. The partial pleats formed in individual cell walls permit movements to and from the central axis without tearing

    Portable flooring protects finished surfaces, is easily moved

    Get PDF
    To protect curved, finished surface and provide support for workmen, portable flooring has been made from rigid plastic foam blocks, faced with aluminum strips. Held together by nylon webbing, the flooring can be rolled up for easy carrying

    A New Socio-Economy in Africa? Thintegration and the Mobile Phone Revolution

    Get PDF
    Much has been written about the impacts of information and communication technology (ICT) in Africa and its transformational socio-economic potential. The penetration of mobile phones in particular has been particularly marked in recent years. This paper seeks to interrogate the hypothesis of transformation by examining the ways in which Africa is integrated into global mobile phone value chain, and the uses to which this technology is put on the continent. While mobiles are having significant, and sometimes welfare enhancing impacts, their use is also embedded in existing relations of social support, resource extraction and conflict. Consequently their impacts are dialectical, facilitating change but also reinforcing existing power relations. As Africa is still primarily a user, rather than a producer or creator of ICT, this represents a form of thin integration (“thintegration”) into the global economy, which does not fundamentally alter the continent’s dependent position.

    Gyrokinetic Studies of Microinstabilities in the RFP

    Full text link
    An analytic equilibrium, the Toroidal Bessel Function Model, is used in conjunction with the gyrokinetic code GYRO to investigate the nature of microinstabilities in a reversed field pinch (RFP) plasma. The effect of the normalized electron plasma pressure ({\beta}) on the characteristics of the microinstabilities is studied. A transition between an ion temperature gradient (ITG) driven mode and a microtearing mode as the dominant instability is found to occur at a {\beta} value of approximately 4.5%. Suppression of the ITG mode occurs as in the tokamak, through coupling to shear Alfven waves, with a critical {\beta} for stability higher than its tokamak equivalent due to a shorter parallel connection length. There is a steep dependence of the microtearing growth rate on temperature gradient suggesting high profile stiffness. There is evidence for a collisionless microtearing mode. The properties of this mode are investigated, and it is found that curvature drift plays an important role in the instability.Comment: 19 pages, 9 figures, submitted to Physics of Plasma

    The Tribble with APL: a new road to therapy

    Get PDF
    The t(15;17) translocation generates a PML-RARα fusion protein causative for acute promyelocytic leukemia (APL). Li et al. now identify the pseudokinase stress protein TRIB3 as an important factor in APL disease progression and therapy resistance. Targeting the interaction of TRIB3 and PML-RARα using peptide technology provides a novel therapeutic approach
    corecore