The underexpanded sonic jet issued from an axisymmetric convergent nozzle are experimentally investigated in which the nozzle is operated at a pressure ratio of 4.0 to produce a Mach disk in the jet plume.Multidirectional rainbow schlieren pictures of the jet acquired by rotating the nozzle about its longitudinal axis in equal angular intervals are
Bilateral epididymal here cysts are rare in childhood.Clinically they may present as acute scrotum and should be differentiated from other pathologies.Here in, we report bilateral epididymal cysts in a 14-year-old boy.He was admitted to emergency department with symptoms of acute left scrotum.There was no history of trauma or infection.Blood analys
Human immunodeficiency virus (HIV) 1 infection is known to cause gut microbiota dysbiosis.Among the causes is the direct infection of HIV-1 tenga flip orb in gut-resident CD4+ T cells, causing a cascade of phenomena resulting in the instability of the gut mucosa.The effect of HIV infection on gut microbiome dysbiosis remains unresolved despite anti
Rapid increases in human populations and environmental changes of past decades have led to changes in rates of contact and spatial overlap with wildlife.Together with other historical, social and environmental processes, this has significantly contributed to pathogen transmission in both directions, especially between humans and non-human primates,
Airborne synthetic aperture radar (SAR) is susceptible to atmospheric disturbance and other factors that cause the position offset error of the antenna phase center and motion error.In close-range detection scenarios, the large elevation angle may make it impossible to directly observe areas near the underlying plane, resulting in observation tenga