In this paper, we investigate the transport and mixing process of the batch mixers with two different configurations, the centered-blade and offset-blade mixers, by using a dynamical system approach. The 2-D velocity fields of the mixers measured using Particle Image Velocimetry (PIV) are used to identify the Lagrangian coherent structures (LCSs). The results show that the LCSs separate the phy...

the aim of this trial was to determine the toxic effect of oms-43 on spraymen and inhabitants. the spraying operation lasted for 30 successive days, and two teams consisting of 20 spraymen, 2 mixers, 4 foremen and team leaders were engaged in this operation. the operators were under systematic and closed clinical observation and cholinesterase determination (tintometric method) during the opera...

A direct conversion modulator-demodulator with even harmonic mixers for fixed wireless applications is presented. The circuits consist of even harmonic mixers (EHMs) realized with antiparallel diode pairs (APDPs). A communication link is set up to examine the overall performance of proposed modulator-demodulator. The transmission of 16-QAM signal with 110Mbps data rate over fixed wireless link ...

(not more than 200 words) This report describes the 94 GHz imaging radar system that has been developed and used within the IR/mm project during the years 2001-2003. The new system, which is based on active gate mixers (GaAs MMIC), shows higher performance than an earlier used system, which was based on resistive mixers (InP HEMT). The conversion loss and pumping power requirement have both bee...

In the modern high-performance transceivers, mixers (both upand down-converters) are required to have large dynamic range in order to meet the system specifications. The lower end of the dynamic range is indicated by the noise floor which tells how small a signal may be processed while the high end is determined by the non-linearity which causes distortion, compression and saturation of the sig...

A new concept, the Bit-Mixer is introduced. It is a function of fixed, possibly different size of input and output, which computes statistically uncorrelated output from correlated input values, and its behavior is altered by parameters, called keys. Several constructions are presented, with very fast, power efficient implementations in electronic hardware, having very little side channel leaka...