Negative feedback genetic circuits (NFGC) are key regulatory motif of cellular robustness with the capability of reducing noise in genetic interaction network. NFGC have the same control theory frame as negative feedback amplifier circuits (NFAC). NFAC can enhance gain stability and output signal-to-noise ratio (OSNR) of output signal (voltage). Whether NFGC possess these two advantages or not ...

In this paper, employing the polynomial approximation of the fading channel probability density function (pdf) for large average signal-to-noise ratio (ASNR), we derive general asymptotic moment generating function (MGF) expressions of the GSC output signal-to-noise ratio (SNR) for generalized fading channels. Based on the MGF result, the asymptotic diversity and coding gains for GSC are derive...

The authors show the importance of achieving an acceptable level of output side mode suppression ratio, when generating pulses using the self seeded gain switched technique. Experiments carried out on such pulses exhibiting poor side-mode-suppressionratios that are subsequently filtered to improve the latter, demonstrate that they possess an associated level of noise. This buildup of noise with...

Detailed wavelength conversion, extinction ratio regeneration, and signal re-amplification experiments are performed using a monolithically integrated, widely tunable photocurrent driven wavelength converter. A -3.5 dB power penalty is observed in bit error rate measurements at 2.5 Gb/s when the extinction ratio of an incoming signal is regenerated from 4 dB to 11 dB, and the input signal wavel...

In this study; membrane distillation technology using to associated oil water production desalination by air gap unit removed salt from the after separating product, via PTEF commercial hydrophobic with 0.22 µm porous and 0.011 m contact surface area, evaluated system operation parameter for feed effected on process employment under boiling point temperature that getting increments study energy...

OBJECTIVES CBCT systems, with their high precision 3D reconstructions, 1:1 images and accuracy in locating cephalometric landmarks, allows us to evaluate measurements from craniofacial structures, so enabling us to replace the anthropometric methods or bidimensional methods used until now. The aims are to analyse cranio-facial relationships in a sample of patients who had previously undergone a...

Volume changes and whole cell ionic currents activated by gradual osmolarity reductions (GOR) of 1.8 mosM/min were characterized in C6 glioma cells. Cells swell less in GOR than after sudden osmolarity reductions (SOR), the extent of swelling being partly Ca(2+) dependent. In nominally Ca(2+)-free conditions, GOR activated predominantly whole cell outward currents. Cells depolarized from the in...

BACKGROUND Asthma, post-nasal drip syndrome (PNDS), and gastro-oesophageal reflux (GOR) account for many cases of chronic non-productive cough (CNPC). Each may simultaneously contribute to cough even when clinically silent, and failure to recognise their contribution may lead to unsuccessful treatment. METHODS Patients (all lifetime non-smokers with normal chest radiographs and spirometric me...