The process by which excess axons are pruned during development has remained unclear. In this issue of Neuron, Bishop et al. use time-lapse imaging and serial electron microscopy of developing neuromuscular junctions to describe a novel cellular mechanism in which retracting axon branches shed fragments rich in normal synaptic organelles. These "axosomes" are engulfed by adjacent Schwann cells ...

In magnetic abrasive finishing (MAF), abrasive grains as a tool move on surface and can remove chip from surface of work piece. In this study AL 6061 tube was considered as the work piece and the effect of finishing parameters such as gap distance between tube and poles, rotational speed of tube, abrasive ration and finishing time on surface roughness was investigated. The mixture of ferromagne...

In magnetic abrasive finishing (MAF), abrasive grains as a tool move on surface and can remove chip from surface of work piece. In this study AL 6061 tube was considered as the work piece and the effect of finishing parameters such as gap distance between tube and poles, rotational speed of tube, abrasive ration and finishing time on surface roughness was investigated. The mixture of ferromagne...

We present results from a field experiment designed to measure the importance of managerial commitment to a contract within a firm that pays its workers piece rates. In the tree planting industry the piece rate paid to workers is determined as a function of the difficulty of the terrain to be planted. During the experiment, firm managers told a crew of tree planters that the piece rate had yet ...

The gamma correction for the CMOS image sensors are implemented by the method of piecewise linear approximation through a look-up table. In this paper, we propose a quantitative criterion to select the piece linear segment with the same output interval for the reduction of the error between the value of piece linear approximation and gamma correction. After the gamma correction is implemented, ...

A double T-piece paediatric system is described. During spontaneous respiration, the system will perform like a Magill system if the fresh gas flow is delivered via the distal T-piece; the proximal T-piece will provide an outlet. During controlled ventilation the set will perform like a Rees system if the fresh gas flow is delivered via the proximal T-piece; the distal T-piece will provide a co...

BACKGROUND Medical researchers often need to share clinical data without violating patient confidentiality. Threshold cryptographic protocols divide messages into multiple pieces, no single piece containing information that can reconstruct the original message. The author describes and implements a novel threshold protocol that can be used to search, annotate or transform confidential data with...

4. Leg piece?Length to measurement from middle of popliteal space to 1 in. beyond heel. Breadth, 5 ins. at knee sloping to 4J ins. at foot end. 5. Foot piece?9 ins. by 4A i?s. This is fixed to leg piece by two 1-inch mortise and tenon joints. It is also nailed to the extension piece. 6. Extension piece?18 ins. by 6 ins. sloping to 5 ins at the top. A pulley (an empty thread reel on a stout nail...

Electromagnetic forming (EM forming or magneforming) is a type of high velocity, cold forming process for electrically conductive metals, most commonly copper and aluminum. The work piece is reshaped by high intensity pulsed magnetic fields that induce a current in the work piece and a corresponding repulsive magnetic field, rapidly repelling portions of the work piece. The work piece can be re...