The traditional Fourier-Bessel approach to three-dimensional reconstruction from electron microscopic (EM) images of helical polymers involves averaging over filaments, assuming a homogeneous structure and symmetry. We have used a real-space reconstruction approach to study the EspA filaments formed by enteropathogenic E. coli. In negative stain, the symmetry of these filaments is ambiguous, an...

Enterohaemorrhagic Escherichia coli O157:H7 are zoonotic pathogens associated with haemorrhagic colitis (HC) and the haemolytic uremic syndrome (HUS). Ruminants are the main reservoir of this organism and most outbreaks of E. coli O157:H7 infections are food borne. Food contamination by ruminant manure has been reported as the primary source of human infection, therefore inhibition of E. coli O...

From the Camelidae family members, several serotypes of Escherichia coli (E. coli) have recently been isolated from diarrhoeic and non-diarrhoeic faecal samples. To date Shiga toxin-producing E. coli (STEC) strains have never been typed in one-humped camel (Camelus dromedarius). In the present study, two E. coli O157:H7 strains isolated from sick dromedaries were investigated. Virulence gene pr...

Compared with traditional remoting image, there is a large amount of spectral information in the hyperspectral image (HSI), which makes HSI better reflect actual condition surface features. However, due to limitations imaging conditions, tends have lower spatial resolution. In order overcome this issue, we propose spectral-spatial attention-based U-Net named SSAU-Net for and multispectral (MSI)...

La introducciĂłn presenta al poeta quiteño Alfredo Gangotena (1904-1944) como un caso de autor margen del canon literario ecuatoriano en el proceso la definiciĂłn modernidad literaria nacional inicios siglo XX. perspectiva se lo aborda es que ubicĂł trance entre dos lenguas: francĂŠs y español. MetodolĂłgicamente ha contextualizado brevemente perĂ­odo ecuatoriana, recurriendo a distin...