The direct space-to-time (DST) pulse shaping apparatus is investigated both theoretically and experimentally. The discussion shows how the operation of the DST pulse shaper may be understood in terms of the femtosecond response of a generalized spectrometer. A complete discussion of the advantages and tradeoffs of utilizing this pulse-shaping configuration is given, including the direct scaling...

[1] Ahmad M. Comparison between two ultrasonic units in shaping curved canals in teeth using macroradiography. cleaning effectiveness of two single-file systems in severely curved root canals of extracted teeth: Reciproc WaveOne versus Mtwo ProTaper. Fidel RAS. The ability of the Reciproc R25 instrument to reach the full root canal working length without a glide path.

The ability of growing microtubules to undergo catastrophes--abrupt switches from growth to shortening--is one of the key aspects of microtubule dynamics important for shaping cellular microtubule arrays. Gardner et al. show that catastrophes occur at a microtubule age-dependent rate and that depolymerizing kinesins can affect this process in fundamentally different ways.

Arguably the most important property of neuronal circuits in general, and of cortical circuits in particular, is plasticity--the ability to change in response to past experience. While many studies of plasticity emphasize changes in excitatory transmission, in this issue of Neuron, Galindo-Leon et al. demonstrate the important role that increased inhibition may play in shaping cortical response...

In this article, enhancement of THz radiation was studied using pulse shaping thchnique. Over 40% enhance was demonstrated by positive chirped optical pulses. This could be attributed to the pump-dump process in excitation.