The gate area of the device is illuminated by an optical radiation of 0.87 mu m from an external source which is coupled into the device through the semitransparent ITO metal at Schottky-gate to modulate the electrical and microwave characteristics of the device. The nonanalytic Gaussian doping profile commonly considered for

the channel doping of an JNK-IN-8 ion-implanted GaAs MESFET has been replaced by an analytic Gaussianlike function for the simplicity of the present model. The two-dimensional (2D) potential distribution obtained by solving the 2D Poisson’s equation by including the effect of photo-generated carriers due to the incident optical radiation has been utilized to model the depletion region width below the gate of the short-channel GaAs MESFETs. The depletion width model has then been used to model the internal gate-source and gate-drain capacitances of the device operating under both the linear and saturation regions. The effect of illumination on the Schottky junction at the gate of the MESFET has been modeled by considering an induced photo-voltage developed across the junction that is superimposed on the applied gate bias voltage. The proposed model has been verified by comparing the theoretically predicted results with simulated data obtained by using the commercially available ATLAS (TM) 2D device simulator. (C) 2011 American Institute

of Physics. [doi:10.1063/1.3549257]“
“The

human respiratory tract pathogen DZNeP Chlamydia pneumoniae AR39 is naturally infected by the bacteriophage phi CPAR39. The phage genome encodes six ORFs, [ORF8, ORF4, ORF5, and viral protein (VP) 1, VP2 and VP3]. To study Selleck MAPK Inhibitor Library the growth of the phage, antibodies were generated to VP1 and used to investigate the phi CPAR39 infection. Using immunofluorescence laser confocal microscopy and two-dimensional gel electrophoresis, we investigated the phi CPAR39 infection of C. pneumoniae AR39. It was observed that phi CPAR39 infection differentially suppressed the C. pneumoniae protein synthesis as the polymorphic membrane protein 10 and the secreted chlamydial protein Cpn0796 was hardly expressed while the secreted chlamydial protein Cpaf was expressed, but not secreted. The inclusion membrane protein, IncA, was demonstrated to surround the phage-infected abnormal reticulate bodies (RB) as well as being located in the inclusion membrane. As IncA is secreted by the type 3 secretion (T3S) system, it is likely that the T3S is disrupted in the phage-infected chlamydiae such that it accumulates around the infected RB.”
“Purpose: To determine the feasibility of the use of xenon-enhanced dynamic dual-energy computed tomography (CT) for visualization and quantitative assessment of collateral ventilation in a canine model with bronchial obstruction.