in this paper, the effect of prestrain on strain aging of low carbon steels, in the temperatures of 100°c and 200°c and the aging time of 50 minutes, and also the effect of aging temperature on strain aging in a constant aging time and prestrain, are investigated. the results of experiments show that with increasing the amount of prestrain, the increase in yield stress and ultimate tensile stre...

In this paper, the gain spectrum of EDFA has been broadened by implementing HTE configuration for S and C band. On using this configuration an amplification bandwidth of 76nm ranging from 1479nm to 1555nm with a peak gain of 26dB has been obtained. Keywords—C band, DWDM system, EDFA, Gain, HTE, Hybrid Fiber Amplifier, S band.

This paper presents the design of a horizontal slot micro-strip Patch antenna with dual inset feed mechanism. The is resonating at 4.28 GHz, reflection coefficient -16.32 dB, and Bandwidth 1 GHz. Rogers RT580 dielectric used as substrate having relative permittivity 2.2 tan δ value 0.0009. gain 6.46 dBi cross-polarization levels are reduced to -16.4 dB. can be for C Band applications such satel...