This paper proposes a novel approach based on swarm intelligence and foraging behavior of Escherichia coli Bacteria in the human intestine for enhancing neutron radiography projections blurred during acquisition by the high neutron flux and noise contaminated due to Gamma radiations. This approach uses the total variation (TV) optimization to solve an ill-posed problem. We consider a regulariza...

Fast neutron radiography (FNR) using divergent beams has the characteristic to magnify small cracks in low-Z materials. For such magnifying FNR systems, a simple method was developed Monte Carlo simulations estimate spatial resolution. The resolution degrading factors, including source size, object thickness, and crosstalk detector, have been investigated this method. calculated results of comp...

background: miniature neutron sources with high neutron flux have abundant applications in medicine, industry and researches. the most important general characteristic of miniature neutron sources is their diameter which is 3mm in average. in this research, we have surveyed and designed an am-be miniature neutron source fabrication. materials and methods: this investigation resulted in creation...

Spontaneous imbibition experiments were carried out on three core samples from the Mardie Greensand and one core sample of Barrow Group sandstone from the Australian North West Shelf. Water uptake into the samples, which were initially airsaturated, was measured by dynamic neutron radiography. The observed data were interpreted by (1) the linear diffusionequation approximation for fluid flow an...

Neutron radiography (NR) technique has been adopted to study homogeneity and water absorption behavior of building materials, like double layer silver gray tiles obtained from Concord Real Estate & Building Products, Unit II, Salna, Gazipur, Dhaka, Bangladesh. Measurements of optical density differences between the film background and radiographic images of the dry/wet samples were used for inv...

Polychromatic and wavelength-selective neutron transmission radiography were applied during bead-on-plate welding on 5 mm thick sheets the face side of martensitic low transformation temperature (LTT) steel plates using gas tungsten arc (GTAW). The in situ visualization austenitization upon subsequent α’-martensite formation cooling could be achieved with a temporal resolution 2 s for monochrom...