6,929 research outputs found
The Informationalization of Poverty in Africa?Information and Communication Technologies and Economic Structure
Honeycomb panel and method of making same Patent
Method for honeycomb panel bonding by thermosetting film adhesive with electrical heat mean
Flexible honeycomb structure can bend to fit compound curves
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
Single-stage experimental evaluation of boundary layer bleed techniques for high lift stator blades. Part 3 - Data and performance of unslotted 0.75 hub diffusion factor stator
Boundary layer bleed techniques for high lift compressor stator blade
Portable flooring protects finished surfaces, is easily moved
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
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
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
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
- …
